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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
Form 10-Q
 
(Mark One)
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended March 31, 2025
or
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from              to             
Commission File Number: 001-35480
enpha15.jpg
Enphase Energy, Inc.
(Exact name of registrant as specified in its charter)
Delaware
20-4645388
(State or other jurisdiction of incorporation or organization)
(I.R.S. Employer Identification No.)
47281 Bayside Parkway
Fremont, CA 94538
(Address of principal executive offices, including zip code)
(707) 774-7000
(Registrant’s telephone number, including area code)
Not Applicable
(Former name, former address and former fiscal year, if changed since last report)
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Stock, $0.00001 par value per shareENPHNasdaq Global Market
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes   No  
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes   No  
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an “emerging growth company.” See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act:
Large accelerated filer

Accelerated filer

Non-accelerated filer

Smaller reporting company
Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes   No  
As of April 18, 2025, there were 131,207,018 shares of the registrant’s common stock outstanding, $0.00001 par value per share.

Enphase Energy, Inc. | 2025 Form 10-Q | 1


ENPHASE ENERGY, INC.
FORM 10-Q FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2025
TABLE OF CONTENTS
Page

















Enphase Energy, Inc. | 2025 Form 10-Q | 2

PART I. FINANCIAL INFORMATION
Item 1.    Financial Statements (unaudited)
ENPHASE ENERGY, INC.
CONDENSED CONSOLIDATED BALANCE SHEETS
(In thousands, except par value)
As of
March 31,
2025
December 31,
2024
ASSETS
Current assets:
Cash and cash equivalents$350,077 $369,110 
Restricted cash65,013 95,006 
Marketable securities1,116,780 1,253,480 
Accounts receivable, net of allowances of $7,929 and $7,788 at March 31, 2025 and December 31, 2024, respectively
225,625 223,749 
Inventory144,025 165,004 
Prepaid expenses and other current assets295,725 220,735 
Total current assets2,197,245 2,327,084 
Property and equipment, net142,219 147,514 
Intangible assets, net37,408 42,398 
Goodwill212,359 211,571 
Other assets211,447 205,542 
Deferred tax assets, net305,408 315,567 
Total assets$3,106,086 $3,249,676 
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable$115,374 $90,032 
Accrued liabilities212,169 196,887 
Deferred revenues, current167,771 237,225 
Warranty obligations, current33,298 34,656 
Debt, current630,677 101,291 
Total current liabilities1,159,289 660,091 
Long-term liabilities:
Deferred revenues, non-current333,704 341,982 
Warranty obligations, non-current170,149 158,233 
Other liabilities61,032 55,265 
Debt, non-current571,214 1,201,089 
Total liabilities2,295,388 2,416,660 
Commitments and contingencies (Note 10)
Stockholders’ equity:
Common stock, $0.00001 par value, 300,000 shares authorized; and 131,186 shares and 132,448 shares issued and outstanding at March 31, 2025 and December 31, 2024, respectively
1 1 
Additional paid-in capital1,128,163 1,084,573 
Accumulated deficit(315,856)(245,206)
Accumulated other comprehensive loss(1,610)(6,352)
Total stockholders’ equity810,698 833,016 
Total liabilities and stockholders’ equity$3,106,086 $3,249,676 
See Notes to Condensed Consolidated Financial Statements.
Enphase Energy, Inc. | 2025 Form 10-Q | 3

ENPHASE ENERGY, INC.
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(In thousands, except per share data)
(Unaudited)
Three Months Ended
March 31,
20252024
Net revenues$356,084 $263,339 
Cost of revenues187,843 147,831 
Gross profit168,241 115,508 
Operating expenses:
Research and development50,174 54,211 
Sales and marketing48,948 53,307 
General and administrative34,035 35,182 
Restructuring and asset impairment charges3,162 1,907 
Total operating expenses136,319 144,607 
Income (loss) from operations31,922 (29,099)
Other income, net
Interest income17,032 19,709 
Interest expense(2,047)(2,196)
Other income (expense), net(14)87 
Total other income, net14,971 17,600 
Income (loss) before income taxes46,893 (11,499)
Income tax provision(17,163)(4,598)
Net income (loss)$29,730 $(16,097)
Net income (loss) per share
Basic$0.23 $(0.12)
Diluted$0.22 $(0.12)
Shares used in per share calculation:
Basic131,869 135,891 
Diluted136,208 135,891 

See Notes to Condensed Consolidated Financial Statements.
Enphase Energy, Inc. | 2025 Form 10-Q | 4

ENPHASE ENERGY, INC.
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
(In thousands)
(Unaudited)
Three Months Ended
March 31,
20252024
Net income (loss)$29,730 $(16,097)
Other comprehensive income (loss):
Foreign currency translation adjustments3,019 (2,974)
Marketable securities
Change in net unrealized gain (loss), net of income tax benefit (provision) of $339 and $(604) for the three months ended March 31, 2025 and, 2024, respectively.
1,723 (1,811)
Comprehensive income (loss)$34,472 $(20,882)
    

See Notes to Condensed Consolidated Financial Statements.
Enphase Energy, Inc. | 2025 Form 10-Q | 5

ENPHASE ENERGY, INC.
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
(In thousands)
(Unaudited)
Three Months Ended
March 31,
20252024
Common stock and paid-in capital
Balance, beginning of period$1,084,574 $939,339 
Issuance of common stock from exercise of equity awards67 1,186 
Payment of withholding taxes related to net share settlement of equity awards(12,110)(60,042)
Stock-based compensation expense55,633 60,833 
Balance, end of period$1,128,164 $941,316 
Accumulated earnings deficit
Balance, beginning of period$(245,206)$46,273 
Repurchase of common stock(99,964)(41,996)
Net income (loss)29,730 (16,097)
Excise tax on net stock repurchases(416) 
Balance, end of period$(315,856)$(11,820)
Accumulated other comprehensive loss
Balance, beginning of period$(6,352)$(1,988)
Foreign currency translation adjustments3,019 (2,974)
Change in net unrealized gain (loss) on marketable securities, net of tax1,723 (1,811)
Balance, end of period$(1,610)$(6,773)
Total stockholders' equity, ending balance
$810,698 $922,723 

See Notes to Condensed Consolidated Financial Statements.
Enphase Energy, Inc. | 2025 Form 10-Q | 6

ENPHASE ENERGY, INC.
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)
(Unaudited)
Three Months Ended
March 31,
20252024
Cash flows from operating activities:
Net income (loss)$29,730 $(16,097)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization19,915 20,137 
Net amortization of premium on marketable securities3,512 2,825 
Provision (benefit) for credit losses62 (130)
Asset impairment27 332 
Non-cash interest expense1,679 2,132 
Net gain from change in fair value of debt securities(323)(942)
Stock-based compensation55,633 60,833 
Deferred income taxes8,560 (8,292)
Changes in operating assets and liabilities:
Accounts receivable1,760 77,359 
Inventory20,979 5,702 
Prepaid expenses and other assets(75,553)(10,897)
Accounts payable, accrued and other liabilities54,232 (66,284)
Warranty obligations10,558 (11,923)
Deferred revenues(82,357)(5,554)
Net cash provided by operating activities48,414 49,201 
Cash flows from investing activities:
Purchases of property and equipment(14,608)(7,371)
Investment in tax equity fund(6,904) 
Purchases of marketable securities(200,826)(472,268)
Maturities and sale of marketable securities335,398 497,373 
Net cash provided by investing activities113,060 17,734 
Cash flows from financing activities:
Settlement of Notes due 2025(102,168)(2)
Proceeds from issuance of common stock under employee equity plans67 1,186 
Payment of withholding taxes related to net share settlement of equity awards(12,110)(60,042)
Repurchase of common stock(99,964)(41,996)
Net cash used in financing activities(214,175)(100,854)
Effect of exchange rate changes on cash, cash equivalents and restricted cash3,675 (1,177)
Net decrease in cash, cash equivalents and restricted cash(49,026)(35,096)
Cash, cash equivalents and restricted cash—Beginning of period464,116 288,748 
Cash, cash equivalents and restricted cash—End of period$415,090 $253,652 
Supplemental cash flow disclosure:
Supplemental disclosures of non-cash investing activities:
Purchases of property and equipment through tenant improvement allowance$855 $ 
Purchases of property and equipment included in accounts payable$4,207 $7,898 

See Notes to Condensed Consolidated Financial Statements.
Enphase Energy, Inc. | 2025 Form 10-Q | 7

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)

1.    DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION
Description of Business
Enphase Energy, Inc. (the “Company”) is a global energy technology company. The Company delivers smart, easy-to-use solutions that manage solar generation, storage and communication on one platform. The Company’s intelligent microinverters work with virtually every solar panel made, and when paired with the Company’s smart technology, results in one of the industry’s best-performing clean energy systems.
Basis of Presentation and Consolidation
The accompanying condensed consolidated financial statements are presented in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”). The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
Unaudited Interim Financial Information
These accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial reporting. In the opinion of management, these unaudited condensed consolidated financial statements reflect all adjustments, consisting of normal recurring items, considered necessary to present fairly the Company’s financial condition, results of operations, comprehensive income (loss), stockholders’ equity and cash flows for the interim periods indicated. The results of operations for the three months ended March 31, 2025 are not necessarily indicative of the operating results for the full year.
Use of Estimates
The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Significant estimates and assumptions reflected in the financial statements include revenue recognition, allowance for credit losses, stock-based compensation, deferred compensation arrangements, income tax provision, inventory valuation, government grants, accrued warranty obligations, fair value of investments, convertible notes, fair value of acquired intangible assets and goodwill, useful lives of acquired intangible assets and property and equipment, incremental borrowing rate for right-of-use assets and lease liability. These estimates are based on information available as of the date of the financial statements; therefore, actual results could differ materially from those estimates due to risks and uncertainties.
The year-end condensed consolidated balance sheet data was derived from audited financial statements but does not include all disclosures required by U.S. GAAP. The Company filed audited consolidated financial statements, which included all information and notes necessary for such a complete presentation in conjunction with its Annual Report on Form 10-K for the fiscal year ended December 31, 2024 filed with the SEC on February 10, 2025 (the “Form 10‑K”).
Summary of Significant Accounting Policies
There have been no changes to the Company’s significant accounting policies as described in Note 2, “Summary of Significant Accounting Policies” of the notes to consolidated financial statements included in Part II, Item 8 of the Form 10-K.
Recently Adopted Accounting Pronouncements
Not Yet Adopted
In December 2023, the Financial Accounting Standard Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” (“ASU 2023-09”). ASU 2023-09 requires that an entity disclose specific categories in the effective tax rate reconciliation as well as provide additional information for reconciling items that meet a quantitative threshold, certain disclosures of state versus
Enphase Energy, Inc. | 2025 Form 10-Q | 8

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
federal income tax expenses and taxes paid. ASU 2023-09 was effective for fiscal years beginning after December 15, 2024 and interim periods for fiscal years beginning after December 15, 2025. The Company plans to adopt ASU 2023-09 in its annual report on Form 10-K for the year ending December 31, 2025. As ASU 2023-09 affects only disclosures, the adoption of ASU 2023-09 is not expected to have a significant impact on its consolidated financial statements.
Recently Issued Accounting Pronouncements
Not Yet Effective
In November 2024, the FASB issued ASU 2024-03, “Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures” (“ASU 2024-03”), which requires additional disclosure of certain costs and expenses within the notes to the financial statements. ASU 2024-03 will be effective for fiscal years beginning after December 15, 2026, and interim periods beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating the impact from ASU 2024-03 on its consolidated financial statements disclosures.
2.    REVENUE RECOGNITION
Disaggregated Revenue
The Company has one major business activity, which is the design, manufacture and sale of solutions for the solar photovoltaic (“PV”) industry. Disaggregated revenue by primary geographical market and timing of revenue recognition for the Company’s single product line are as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Primary geographical markets:
United States$263,238 $149,974 
International
92,846 113,365 
Total$356,084 $263,339 
Timing of revenue recognition:
Products delivered at a point in time$322,886 $233,145 
Products and services delivered over time33,198 30,194 
Total$356,084 $263,339 
Contract Balances
Accounts receivable, and contract assets and contract liabilities from contracts with customers, are as follows:
March 31,
2025
December 31,
2024
(In thousands)
Accounts receivable$225,625 $223,749 
Short-term contract assets (Prepaid expenses and other current assets)42,098 42,001 
Long-term contract assets (Other assets)108,403 110,954 
Short-term contract liabilities (Deferred revenues, current)167,771 237,225 
Long-term contract liabilities (Deferred revenues, non-current)333,704 341,982 
The Company receives payments from customers based upon contractual payment terms. Accounts receivable are recorded in an amount that reflects the consideration that is expected to be received in exchange for those goods or services when the right to consideration becomes unconditional.
Contract assets include deferred product costs and commissions associated with the deferred revenue and will be amortized along with the associated revenue. The Company had no asset impairment charges related to contract assets for the three months ended March 31, 2025.
Enphase Energy, Inc. | 2025 Form 10-Q | 9

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
Significant changes in the balances of contract assets (prepaid expenses and other current assets) as of March 31, 2025 are as follows (in thousands):
Contract Assets
Contract Assets, beginning of period$152,955 
Amount recognized(9,879)
Increased due to billings7,425 
Contract Assets, end of period$150,501 
Contract liabilities are recorded as deferred revenue on the accompanying condensed consolidated balance sheets and include payments received in advance of performance obligations under the contract and are realized when the associated revenue is recognized under the contract.
Significant changes in contract liabilities (deferred revenues) as of March 31, 2025 are as follows (in thousands):
Contract Liabilities
Contract Liabilities, beginning of period$579,207 
Revenue recognized(103,106)
Increased due to billings25,374 
Contract Liabilities, end of period$501,475 
Remaining Performance Obligations
Estimated revenue expected to be recognized in future periods related to performance obligations that are unsatisfied or partially unsatisfied at the end of the reporting period are as follows:
March 31,
2025
(In thousands)
Fiscal year:
2025 (remaining nine months)$138,025 
2026113,805 
202793,659 
202872,391 
202947,931 
Thereafter35,664 
Total$501,475 
3.    OTHER FINANCIAL INFORMATION
Inventory
Inventory consists of the following:
March 31,
2025
December 31,
2024
(In thousands)
Raw materials$40,389 $38,740 
Finished goods103,636 126,264 
Total inventory$144,025 $165,004 
Enphase Energy, Inc. | 2025 Form 10-Q | 10

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
Accrued Liabilities
Accrued liabilities consist of the following:
March 31,
2025
December 31,
2024
(In thousands)
Customer rebates and sales incentives$88,084 $96,324 
Liability due to supply agreements48,756 42,745 
Freight8,549 7,497 
Salaries, commissions, incentive compensation and benefits18,235 11,956 
Income tax payable11,497 3,540 
Operating lease liabilities, current6,154 5,815 
VAT payable3,302 1,472 
Liabilities related to restructuring accruals3,250 3,262 
Other24,342 24,276 
Total accrued liabilities$212,169 $196,887 
4.    GOODWILL AND INTANGIBLE ASSETS
The Company’s goodwill as of March 31, 2025 and December 31, 2024 was as follows:
GoodwillMarch 31,
2025
December 31,
2024
(In thousands)
Goodwill, beginning of period$211,571 $214,562 
Currency translation adjustment788 (2,991)
Goodwill, end of period$212,359 $211,571 
The Company’s purchased intangible assets as of March 31, 2025 and December 31, 2024 were as follows:
March 31, 2025December 31, 2024
GrossAccumulated AmortizationNetGrossAccumulated AmortizationImpairmentNet
(In thousands)
Intangible assets:
Indefinite-lived intangibles$286 $— $286 $286 $— $— $286 
Intangible assets with finite lives:
 Developed technology47,683 (37,462)10,221 51,054 (35,903)(3,351)11,800 
 Customer relationships51,114 (37,315)13,799 51,306 (35,804)(177)15,325 
 Trade names37,700 (24,598)13,102 37,700 (22,713) 14,987 
Total purchased intangible assets$136,783 $(99,375)$37,408 $140,346 $(94,420)$(3,528)$42,398 
Enphase Energy, Inc. | 2025 Form 10-Q | 11

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
During the three months ended March 31, 2025, intangible assets decreased by less than $0.1 million due to the impact of foreign currency translation.
Amortization expense related to finite-lived intangible assets were as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Developed technology$1,593 $2,467 
Customer relationships
1,535 1,576 
Trade-names1,885 1,885 
Total amortization expense
$5,013 $5,928 
Amortization of developed technology is recorded to cost of revenues, amortization of customer relationships and trade-names are recorded to sales and marketing expense, and amortization of certain customer relationships is recorded as a reduction to revenue.
The expected future amortization expense of intangible assets as of March 31, 2025 is presented below:
March 31,
2025
(In thousands)
Fiscal year:
2025 (remaining nine months)$15,028 
202617,843 
20274,251 
Total$37,122 

5.    CASH EQUIVALENTS, RESTRICTED CASH AND MARKETABLE SECURITIES
The cash equivalents, restricted cash and marketable securities consist of the following:
As of March 31, 2025
Amortized CostGross Unrealized GainsGross Unrealized LossesFair ValueCash EquivalentsMarketable SecuritiesRestricted Cash
(In thousands)
Money market funds$175,480 $ $ $175,480 $175,480 $ $ 
Certificates of deposit93,218 15 (1)93,232  28,232 65,000 
Commercial paper21,433 14 (4)21,443  21,443  
Corporate notes and bonds398,540 1,302 (567)399,275  399,275  
U.S. Treasuries88,565 1 (41)88,525  88,525  
U.S. Government agency securities578,536 1,235 (466)579,305  579,305  
Total$1,355,772 $2,567 $(1,079)$1,357,260 $175,480 $1,116,780 $65,000 
Enphase Energy, Inc. | 2025 Form 10-Q | 12

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
As of December 31, 2024
Amortized CostGross Unrealized GainsGross Unrealized LossesFair ValueCash EquivalentsMarketable SecuritiesRestricted Cash
(In thousands)
Money market funds$191,410 $ $ $191,410 $191,410 $ $ 
Certificates of deposit125,087 13 (8)125,092  30,092 95,000 
Commercial paper30,681 40 (8)30,713  30,713  
Corporate notes and bonds449,612 1,115 (1,157)449,570  449,570  
U.S. Treasuries111,606 42 (36)111,612  111,612  
U.S. Government agency securities631,389 1,241 (1,137)631,493  631,493  
Total$1,539,785 $2,451 $(2,346)$1,539,890 $191,410 $1,253,480 $95,000 
The following table summarizes the contractual maturities of the Company’s cash equivalents, restricted cash and marketable securities as of March 31, 2025:
Amortized CostFair Value
(In thousands)
Due within one year$877,661 $878,380 
Due within one to three years478,111 478,880 
Total$1,355,772 $1,357,260 
All available-for-sale securities have been classified as current, based on management's intent and ability to use the funds in current operations.
6.    WARRANTY OBLIGATIONS
The Company’s warranty obligation activities were as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Warranty obligations, beginning of period$192,889 $189,087 
Accruals for warranties issued during period7,309 6,098 
Expense (benefit) from changes in estimates7,721 (12,361)
Settlements(6,582)(6,893)
Increase due to accretion expense3,060 2,905 
Other(950)(1,672)
Warranty obligations, end of period203,447 177,164 
Less: warranty obligations, current(33,298)(30,868)
Warranty obligations, non-current$170,149 $146,296 
Enphase Energy, Inc. | 2025 Form 10-Q | 13

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
Changes in Estimates
In the three months ended March 31, 2025, the Company recorded $7.7 million in warranty expense from changes in estimates, of which $5.9 million related to estimated additional tariff costs to be incurred on product replacement costs and $1.8 million related to continuing analysis of field performance data and diagnostic root-cause failure analysis primarily for prior generation products.
In the three months ended March 31, 2024, the Company recorded $12.4 million in warranty benefit from changes in estimates, of which $9.3 million related to a decrease in product replacement costs for Enphase IQ® Battery storage systems and $3.1 million related to continuing analysis of field performance data and diagnostic root-cause failure analysis for Enphase IQ Battery storage systems.
7.    FAIR VALUE MEASUREMENTS
The accounting guidance defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and considers assumptions that market participants would use when pricing the asset or liability, such as inherent risk, transfer restrictions, and risk of nonperformance.
The fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. An asset’s or liability’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Three levels of inputs may be used to measure fair value:
Level 1 - Valuations based on quoted prices in active markets for identical assets or liabilities that the Company is able to access. Since valuations are based on quoted prices that are readily and regularly available in an active market, valuation of such assets or liabilities do not entail a significant degree of judgment.
Level 2 - Valuations based on one or more quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly.
Level 3 - Valuations based on inputs that are unobservable and significant to the overall fair value measurement.
Enphase Energy, Inc. | 2025 Form 10-Q | 14

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
The following table presents assets and liabilities measured at fair value on a recurring basis using the above input categories:
March 31, 2025December 31, 2024
(In thousands)
Level 1Level 2Level 3Level 1Level 2Level 3
Assets:
Cash equivalents, restricted cash and marketable securities:
Money market funds$175,480 $ $ $191,410 $ $ 
Certificates of deposit65,000   95,000   
Commercial paper      
Corporate notes and bonds     
Marketable securities:
Certificates of deposit 28,232   30,092  
Commercial paper 21,443   30,713  
Corporate notes and bonds 399,275   449,570  
U.S. Treasuries 88,525   111,612  
U.S. Government agency securities 579,305   631,493  
Other assets:
Investments in debt securities  65,157   64,834 
Investment in tax equity fund  5,190    
Total assets measured at fair value$240,480 $1,116,780 $70,347 $286,410 $1,253,480 $64,834 
Liabilities:
Warranty obligations:
Current$ $ $26,200 $ $ $27,173 
Non-current  153,853   143,743 
Total warranty obligations measured at fair value  180,053   170,916 
Total liabilities measured at fair value$ $ $180,053 $ $ $170,916 
Notes due 2028, Notes due 2026 and Notes due 2025
The Company carries the Notes due 2028 (as defined in Note 9, “Debt”) and Notes due 2026 (as defined in Note 9, “Debt”) at face value less unamortized debt issuance costs on its condensed consolidated balance sheets. As of March 31, 2025, the fair value of the Notes due 2028 and Notes due 2026 was $487.4 million and $601.3 million, respectively. The fair value as of March 31, 2025 was determined based on the closing trading price per $100 principal amount as of the last day of trading for the period. The Company considers the fair value of the Notes due 2028 and Notes due 2026 to be a Level 2 measurement as they are not actively traded.
Investments in debt securities
Investments in debt securities is recorded in “Other assets” on the accompanying condensed consolidated balance sheets as of March 31, 2025 and December 31, 2024. The changes in the balance in investments in debt securities during the period were as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Balance at beginning of period$64,834 $79,855 
Fair value adjustments included in other income, net323 942 
Balance at end of period$65,157 $80,797 
Enphase Energy, Inc. | 2025 Form 10-Q | 15

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
Investment in tax equity fund
In January 2025, the Company made an investment in a tax equity fund contributing $6.9 million. The Company has elected to report its investment at fair value, which is equal to the present value of the remaining future cash flows expected to be received from the investment. The investment is included in “Other assets” on the accompanying condensed consolidated balance sheet as of March 31, 2025.
As of March 31, 2025, the fair value of the investment was $5.2 million, representing the Company’s share of net assets in the tax equity fund. During the three months ended March 31, 2025, the Company recognized a deferred tax asset of $1.8 million related to the difference between the initial investment amount and the fair value. Additionally, the Company recognized a gain of $0.1 million in “Other income (expense), net” in the condensed consolidated statements of operations for the same period.
Fair Value Option for Warranty Obligations Related to Products Sold Since January 1, 2014
The Company estimates the fair value of warranty obligations by calculating the warranty obligations in the same manner as for sales prior to January 1, 2014 and applying an expected present value technique to that result. The expected present value technique, an income approach, converts future amounts into a single current discounted amount. In addition to the key estimates of return rates and replacement costs, the Company used certain Level 3 inputs, which are unobservable and significant to the overall fair value measurement. Such additional assumptions are based on the Company’s credit-adjusted risk-free rate (“discount rate”) and compensation comprised of a profit element and risk premium required of a market participant to assume the obligation.
The following table provides information regarding changes in nonfinancial liabilities related to the Company’s warranty obligations measured at fair value on a recurring basis using significant unobservable inputs designated as Level 3 for the periods indicated:
Three Months Ended
March 31,
20252024
(In thousands)
Balance at beginning of period$170,916 $161,793 
Accruals for warranties issued during period7,299 6,082 
Changes in estimates4,626 (12,018)
Settlements(4,898)(6,540)
Increase due to accretion expense3,060 2,905 
Other(950)(1,672)
Balance at end of period$180,053 $150,550 
Quantitative and Qualitative Information about Level 3 Fair Value Measurements
As of March 31, 2025 and December 31, 2024, the significant unobservable inputs used in the fair value measurement of the Company’s liabilities designated as Level 3 were as follows:
Percent Used
(Weighted Average)
Item Measured at Fair ValueValuation TechniqueDescription of Significant Unobservable InputMarch 31,
2025
December 31,
2024
Warranty obligations for products sold since January 1, 2014Discounted cash flowsProfit element and risk premium17.5%16.8%
Credit-adjusted risk-free rate7.2%7.2%
Enphase Energy, Inc. | 2025 Form 10-Q | 16

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
Sensitivity of Level 3 Inputs - Warranty Obligations
Each of the significant unobservable inputs is independent of the other. The profit element and risk premium are estimated based on the requirements of a third-party participant willing to assume the Company’s warranty obligations. The discount rate is determined by reference to the Company’s own credit standing at the fair value measurement date. Under the expected present value technique, increasing the profit element and risk premium input by 100 basis points would result in a $1.3 million increase to the liability. Decreasing the profit element and risk premium by 100 basis points would result in a $1.3 million reduction to the liability. Increasing the discount rate by 100 basis points would result in a $12.2 million decrease to the liability. Decreasing the discount rate by 100 basis points would result in a $13.7 million increase to the liability.
8.    RESTRUCTURING AND ASSET IMPAIRMENT CHARGES
2024 Restructuring Plan
In the fourth quarter of 2024, the Company implemented a restructuring plan (the “2024 Restructuring Plan”) designed to better align its workforce and cost structure with the Company’s business needs, strategic priorities and ongoing commitment to profitable growth, while increasing operational efficiencies and reducing operating cost. The Company plans to complete its restructuring activities under the 2024 Restructuring Plan by June 30, 2025.
The following table presents the details of the Company’s restructuring and asset impairment charges under the 2024 Restructuring Plan for the three months ended March 31, 2025:
Three Months Ended
March 31,
2025
(In thousands)
Employee severance and benefits $3,371 
Contract termination charges(236)
Asset impairment27 
Total restructuring and asset impairment charges$3,162 
The following table provides information regarding changes in the Company’s accrued restructuring balances under the 2024 Restructuring Plan for the periods indicated:
Employee Severance and BenefitsContract Termination Charges Asset ImpairmentTotal
(In thousands)
Balance as of December 31, 2024$2,220 $766 $ $2,986 
Charges3,371 (236)27 3,162 
Cash payments and receipts, net(2,634)(1) (2,635)
Non-cash settlement and other(509) (27)(536)
Balance as of March 31, 2025$2,448 $529 $ $2,977 
2023 Restructuring Plan
In the fourth quarter of 2023, the Company implemented a restructuring plan (the “2023 Restructuring Plan”) designed to increase operational efficiencies and execution, reduce operating costs, and better align the Company’s workforce and cost structure with current market conditions, and the Company’s business needs, strategic priorities and ongoing commitment to profitable growth. The Company completed its restructuring activities under the 2023 Restructuring Plan in the fourth quarter of 2024 and substantially all of the remaining liabilities as of December 31, 2024, were settled during the three months ended March 31, 2025.
Enphase Energy, Inc. | 2025 Form 10-Q | 17

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
9.    DEBT
The following table provides information regarding the Company’s debt:
March 31,
2025
December 31,
2024
(In thousands)
Convertible notes
Notes due 2028$575,000 $575,000 
Less: unamortized debt issuance costs(3,786)(4,102)
Carrying amount of Notes due 2028 571,214 570,898 
Notes due 2026632,500 632,500 
Less: unamortized debt issuance costs(1,823)(2,309)
Carrying amount of Notes due 2026 630,677 630,191 
Notes due 2025 102,168 
Less: unamortized debt discount (803)
Less: unamortized debt issuance costs (74)
Carrying amount of Notes due 2025 101,291 
Total carrying amount of debt1,201,891 1,302,380 
Less: debt, current(630,677)(101,291)
Debt, non-current$571,214 $1,201,089 
The following table presents the total amount of interest cost recognized in the consolidated statement of operations relating to the Company’s notes:
Three Months Ended
March 31,
20252024
Notes due 2028Notes due 2026Notes due 2025Notes due 2028Notes due 2026Notes due 2025
(In thousands)
Contractual interest expense$ $ $43 $ $ $64 
Amortization of debt discount  803   1,177 
Amortization of debt issuance costs316 485 75 326 503 126 
Total interest cost recognized$316 $485 $921 $326 $503 $1,367 
Convertible Senior Notes due 2028
On March 1, 2021, the Company issued $575.0 million aggregate principal amount of its 0.0% convertible senior notes due 2028 (the “Notes due 2028”). The Notes due 2028 will not bear regular interest, and the principal amount of the Notes due 2028 will not accrete. The Notes due 2028 are general unsecured obligations and are governed by an indenture between the Company and U.S. Bank National Association, as trustee. The Notes due 2028 will mature on March 1, 2028, unless earlier repurchased by the Company or converted at the option of the holders. The Company received approximately $566.4 million in net proceeds, after deducting the initial purchasers’ discount, from the issuance of the Notes due 2028.
Enphase Energy, Inc. | 2025 Form 10-Q | 18

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
The initial conversion rate for the Notes due 2028 is 3.5104 shares of common stock per $1,000 principal amount of the Notes due 2028 (which represents an initial conversion price of approximately $284.87 per share). Upon conversion, the Company will settle conversions of the Notes due 2028 through payment or delivery, as the case may be, of cash, shares of its common stock or a combination of cash and shares of its common stock, at the Company’s election.
The Company may redeem for cash all or any portion of the Notes due 2028, at the Company’s election, on or after September 6, 2024, if the last reported sale price of the Company’s common stock has been greater than or equal to 130% of the conversion price then in effect for the Notes due 2028 (i.e., $370.33, which is 130% of the current conversion price for the Notes due 2028) for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which the Company provides notice of redemption. The redemption price will equal 100% of the principal amount of the Notes due 2028 to be redeemed, plus accrued and unpaid special interest, if any to, but excluding, the relevant redemption date. No sinking fund is provided for the Notes due 2028.
The Notes due 2028 may be converted on any day prior to the close of business on the business day immediately preceding September 1, 2027, in multiples of $1,000 principal amount, at the option of the holder only under any of the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on June 30, 2021 (and only during such calendar quarter), if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price for the Notes due 2028 on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the “Measurement Period”) in which the “trading price” (as defined in the relevant indenture) per $1,000 principal amount of notes for each trading day of the Measurement Period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate for the Notes due 2028 on each such trading day; (3) if the Company calls any or all of the Notes due 2028 for redemption, at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date; or (4) upon the occurrence of specified corporate events. On and after September 1, 2027 until the close of business on the second scheduled trading day immediately preceding the maturity date of March 1, 2028, holders of the Notes due 2028 may convert their notes at any time, regardless of the foregoing circumstances. Upon the occurrence of a fundamental change (as defined in the relevant indenture), holders may require the Company to repurchase all or a portion of their Notes due 2028 for cash at a price equal to 100% of the principal amount of the notes to be repurchased plus any accrued and unpaid special interest, if any, to, but excluding, the fundamental change repurchase date.
As of March 31, 2025, the sales price of the Company’s common stock was not greater than or equal to $370.33 (130% of the notes conversion price) for at least 20 trading days (whether consecutive or not) during a period of 30 consecutive trading days preceding the quarter-ended March 31, 2025. As a result, the Notes due 2028 are not convertible at the holders’ option. Accordingly, the Company classified the net carrying amount of the Notes due 2028 of $571.2 million as Debt, non-current on the condensed consolidated balance sheet as of March 31, 2025. As of March 31, 2025, the unamortized deferred issuance cost for the Notes due 2028 was $3.8 million on the condensed consolidated balance sheet.
Notes due 2028 Hedge and Warrant Transactions
In connection with the offering of the Notes due 2028, the Company entered into privately-negotiated convertible note hedge transactions (“Notes due 2028 Hedge”) pursuant to which the Company has the option to purchase a total of approximately 2.0 million shares of its common stock (subject to anti-dilution adjustments), which is the same number of shares initially issuable upon conversion of the Notes due 2028, at a price of $284.87 per share. The total cost of the convertible note hedge transactions was approximately $161.6 million. The convertible note hedge transactions are expected generally to reduce potential dilution to the Company’s common stock upon any conversion of the Notes due 2028 and/or offset any cash payments the Company is required to make in excess of the principal amount of converted notes, as the case may be.
Additionally, the Company separately entered into privately-negotiated warrant transactions (the “2028 Warrants”) whereby the Company sold warrants to acquire approximately 2.0 million shares of the Company’s common stock (subject to anti-dilution adjustments) at an initial strike price of $397.91 per share. The Company
Enphase Energy, Inc. | 2025 Form 10-Q | 19

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
received aggregate proceeds of approximately $123.4 million from the sale of the 2028 Warrants. If the market value per share of the Company’s common stock, as measured under the 2028 Warrants, exceeds the strike price of the 2028 Warrants, the 2028 Warrants will have a dilutive effect on the Company’s earnings per share, unless the Company elects, subject to certain conditions, to settle the 2028 Warrants in cash. Taken together, the purchase of the Notes due 2028 Hedge and the sale of the 2028 Warrants are intended to reduce potential dilution from the conversion of the Notes due 2028 and to effectively increase the overall conversion price from $284.87 to $397.91 per share. The 2028 Warrants are only exercisable on the applicable expiration dates in accordance with the Notes due 2028 Hedge. Subject to the other terms of the 2028 Warrants, the first expiration date applicable to the Notes due 2028 Hedge is June 1, 2028, and the final expiration date applicable to the Notes due 2028 Hedge is July 27, 2028.
Given that the transactions meet certain accounting criteria, the Notes due 2028 Hedge and the 2028 Warrants transactions were recorded in stockholders’ equity, and they were not accounted for as derivatives and are not remeasured each reporting period.
Convertible Senior Notes due 2026
On March 1, 2021, the Company issued $575.0 million aggregate principal amount of 0.0% convertible senior notes due 2026 (the “Notes due 2026”). In addition, on March 12, 2021, the Company issued an additional $57.5 million aggregate principal amount of the Notes due 2026 pursuant to the initial purchasers’ full exercise of the over-allotment option for additional Notes due 2026. The Notes due 2026 will not bear regular interest, and the principal amount of the Notes due 2026 will not accrete. The Notes due 2026 are general unsecured obligations and are governed by an indenture between the Company and U.S. Bank National Association, as trustee. The Notes due 2026 will mature on March 1, 2026, unless repurchased earlier by the Company or converted at the option of the holders. The Company received approximately $623.0 million in net proceeds, after deducting the initial purchasers’ discount, from the issuance of the Notes due 2026.
The initial conversion rate for the Notes due 2026 is 3.2523 shares of common stock per $1,000 principal amount of the Notes due 2026 (which represents an initial conversion price of approximately $307.47 per share). Upon conversion, the Company will settle conversions of Notes due 2026 through payment or delivery, as the case may be, of cash, shares of its common stock or a combination of cash and shares of its common stock, at the Company’s election.
The Company may redeem for cash all or any portion of the Notes due 2026, at the Company’s election, on or after September 6, 2023, if the last reported sale price of the Company’s common stock has been greater than or equal to 130% of the conversion price then in effect for the Notes due 2026 (i.e., $399.71, which is 130% of the current conversion price for the Notes due 2026) for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which the Company provides notice of redemption. The redemption price will equal 100% of the principal amount of the Notes due 2026 to be redeemed, plus accrued and unpaid special interest, if any, to, but excluding, the relevant redemption date for the Notes due 2026. The redemption price will be increased as described in the relevant indentures by a number of additional shares of the Company in connection with such optional redemption by the Company. No sinking fund is provided for the Notes due 2026.
The Notes due 2026 may be converted on any day prior to the close of business on the business day immediately preceding September 1, 2025, in multiples of $1,000 principal amount, at the option of the holder only under any of the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on June 30, 2021 (and only during such calendar quarter), if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price of the Notes due 2026 on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the “measurement period”) in which the “trading price” (as defined in the relevant indenture) per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate for Notes due 2026 on each such trading day; (3) if the Company calls any or all of the Notes due 2026 for redemption, at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date; or (4) upon the occurrence of specified corporate events. On and after
Enphase Energy, Inc. | 2025 Form 10-Q | 20

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
September 1, 2025 until the close of business on the second scheduled trading day immediately preceding the maturity date of March 1, 2026, holders of the Notes due 2026 may convert their notes at any time, regardless of the foregoing circumstances. Upon the occurrence of a fundamental change (as defined in the relevant indenture), holders may require the Company to repurchase all or a portion of their Notes due 2026 for cash at a price equal to 100% of the principal amount of the notes to be repurchased plus any accrued and unpaid special interest, if any, to, but excluding, the fundamental change repurchase date.
As of March 31, 2025, the sale price of the Company’s common stock was not greater than or equal to $399.71 (130% of the notes conversion price) for at least 20 trading days (whether consecutive or not) during a period of 30 consecutive trading days preceding the quarter-ended March 31, 2025. As a result, the Notes due 2026 are not convertible at the holders’ option. Further, as the Notes due 2026 mature in less than a year, accordingly, the Company classified the net carrying amount of the Notes due 2026 of $630.7 million as Debt, current on the condensed consolidated balance sheet as of March 31, 2025. As of March 31, 2025, the unamortized deferred issuance cost for the Notes due 2026 was $1.8 million on the condensed consolidated balance sheet.
Notes due 2026 Hedge and Warrant Transactions
In connection with the offering of the Notes due 2026 (including in connection with the issuance of additional Notes due 2026 upon the initial purchasers’ exercise of their over-allotment option), the Company entered into privately-negotiated convertible note hedge transactions (the “Notes due 2026 Hedge”) pursuant to which the Company has the option to purchase a total of approximately 2.1 million shares of its common stock (subject to anti-dilution adjustments), which is the same number of shares initially issuable upon conversion of the Notes due 2026, at a price of $307.47 per share, which is the initial conversion price of the Notes due 2026. The total cost of the Notes due 2026 Hedge was approximately $124.6 million. The Notes due 2026 Hedge are expected generally to reduce potential dilution to the Company’s common stock upon any conversion of the Notes due 2026 and/or offset any cash payments the Company is required to make in excess of the principal amount of converted notes, as the case may be.
Additionally, the Company separately entered into privately-negotiated warrant transactions, including in connection with the issuance of additional Notes due 2026 upon the initial purchasers’ exercise of their over-allotment option (the “2026 Warrants”), whereby the Company sold warrants to acquire approximately 2.1 million shares of the Company’s common stock (subject to anti-dilution adjustments) at an initial strike price of $397.91 per share. The Company received aggregate proceeds of approximately $97.4 million from the sale of the 2026 Warrants. If the market value per share of the Company’s common stock, as measured under the 2026 Warrants, exceeds the strike price of the 2026 Warrants, the 2026 Warrants will have a dilutive effect on the Company’s earnings per share, unless the Company elects, subject to certain conditions, to settle the 2026 Warrants in cash. Taken together, the purchase of the Notes due 2026 Hedge and the sale of the 2026 Warrants are intended to reduce potential dilution from the conversion of the Notes due 2026 and to effectively increase the overall conversion price from $307.47 to $397.91 per share. The 2026 Warrants are only exercisable on the applicable expiration dates in accordance with the 2026 Warrants. Subject to the other terms of the 2026 Warrants, the first expiration date applicable to the Warrants is June 1, 2026, and the final expiration date applicable to the 2026 Warrants is July 27, 2026.
Given that the transactions meet certain accounting criteria, the Notes due 2026 Hedge and the 2026 Warrants transactions were recorded in stockholders’ equity, and they were not accounted for as derivatives and are not remeasured each reporting period.
Convertible Senior Notes due 2025
During the three months ended March 31, 2025, the Company settled all of its outstanding 0.25% convertible senior notes due 2025 (the “Notes due 2025”) on March 1, 2025 (the “maturity date”). As part of the settlement, the Company paid $102.2 million in cash towards principal amount of the Notes due 2025 and no shares were issued in connection with the settlement as the conversion value was less than the principal amount of the Notes due 2025. Following the settlement, there were no Notes due 2025 outstanding as of March 31, 2025.
Enphase Energy, Inc. | 2025 Form 10-Q | 21

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
Notes due 2025 Hedge and Warrant Transactions
In connection with the offering of the Notes due 2025, the Company entered into privately-negotiated convertible note hedge transactions (the “Notes due 2025 Hedge”) to reduce potential dilution to the Company’s common stock upon any conversion of the Notes due 2025 and/or offset any cash payments the Company is required to make in excess of the principal amount of converted notes, as the case may be. The Notes due 2025 Hedge expired on March 1, 2025, upon maturity of Notes due 2025 as the strike price was higher than the market price.
Additionally, the Company separately entered into privately-negotiated warrant transactions in connection with the offering of the Notes due 2025 whereby the Company sold the 2025 Warrants to acquire approximately 3.9 million shares of the Company’s common stock (subject to anti-dilution adjustments) at an initial strike price of $106.94 per share. If the market value per share of the Company’s common stock, as measured under the 2025 Warrants, exceeds the $106.94 strike price of the 2025 Warrants, the 2025 Warrants will have a dilutive effect on the Company’s earnings per share, unless the Company elects, subject to certain conditions, to settle the 2025 Warrants in cash. The 2025 Warrants are only exercisable on the applicable expiration dates in accordance with the agreements relating to each of the 2025 Warrants. Subject to the other terms of the 2025 Warrants, the first expiration date applicable to the 2025 Warrants is June 1, 2025, and the final expiration date applicable to the 2025 Warrants is September 23, 2025.
As of March 31, 2025, warrants exercisable for approximately 1.3 million shares of common stock remained outstanding under the 2025 Warrants.
Given that the transactions meet certain accounting criteria, the 2025 Warrants transactions are recorded in stockholders’ equity, and are not accounted for as derivatives and are not remeasured each reporting period.
10.    COMMITMENTS AND CONTINGENCIES
Operating Leases
The Company leases office facilities under noncancellable operating leases that expire on various dates through 2034, some of which may include options to extend the leases for up to 12 years.
The components of lease expense are presented as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Operating lease costs$2,817 $2,647 
The components of right of use assets and lease liabilities are presented as follows:
March 31,
2025
December 31,
2024
(In thousands, except years and percentage data)
Operating Leases:
Operating lease, right of use asset, net (Other assets)$27,949 $24,617 
Operating lease liabilities, current (Accrued liabilities)
$6,154 $5,815 
Operating lease liabilities, non-current (Other liabilities)26,560 23,044 
Total operating lease liabilities
$32,714 $28,859 
Supplemental lease information:
Weighted average remaining lease term
6.4 years5.9 years
Weighted average discount rate
6.6%6.7%
Enphase Energy, Inc. | 2025 Form 10-Q | 22

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
Supplemental cash flow and other information related to operating leases were as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases$2,131 $1,905 
Non-cash investing activities:
Lease liabilities arising from obtaining right-of-use assets
$7,260 $1,695 
Undiscounted cash flows of operating lease liabilities as of March 31, 2025 were as follows:
Lease Amounts
(In thousands)
Year:
2025 (remaining nine months)$6,125 
20267,768 
20275,408 
20284,432 
20294,378 
Thereafter12,567 
Total lease payments
40,678 
Less: imputed lease interest
(7,964)
Total lease liabilities
$32,714 
Purchase Obligations
The Company has contractual obligations related to component inventory that its contract manufacturers procure on its behalf in accordance with its production forecast as well as other inventory related purchase commitments. As of March 31, 2025, these purchase obligations totaled approximately $142.3 million.
Litigation
The Company is subject to various legal proceedings and claims that have arisen in the ordinary course of business and that have not been fully resolved. An accrual for a loss contingency or loss recovery is recognized when it is probable and the amount of loss or recovery can be reasonably estimated. The outcome of litigation is inherently uncertain. If one or more legal matters were resolved against the Company in a reporting period for amounts above management’s expectations, the Company’s business, results of operations, financial position and cash flows for that reporting period could be materially adversely affected. As of March 31, 2025 and 2024, in the opinion of management, there was not at least a reasonable possibility the Company may have incurred a material loss, or a material loss greater than a recorded accrual, concerning loss contingencies for asserted legal and other claims.
11.    STOCKHOLDERS' EQUITY
In July 2023, the board of directors authorized a share repurchase program (the “2023 Repurchase Program”) pursuant to which the Company was authorized to repurchase up to $1.0 billion of the Company’s common stock. The Company may repurchase shares of common stock from time to time through solicited or unsolicited transactions in the open market, in privately negotiated transactions or pursuant to a Rule 10b5-1 plan. During the three months ended March 31, 2025 and 2024, the Company repurchased and subsequently retired 1,594,105 and 332,735 shares, respectively, of common stock from the open market at an average cost of $62.71 and $126.21 per share, respectively, for a total of $100.0 million and $42.0 million, respectively. As of March 31, 2025, $298.7 million remains available for repurchase of shares under the 2023 Repurchase Program.
Enphase Energy, Inc. | 2025 Form 10-Q | 23

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
12.    STOCK-BASED COMPENSATION
Stock-based Compensation Expense
Stock-based compensation expense for all stock-based awards, which includes shares purchased under the Company’s employee stock purchase plan (“ESPP”), restricted stock units (“RSUs”) and performance stock units (“PSUs”), expected to vest is measured at fair value on the date of grant and recognized ratably over the requisite service period.
The following table summarizes the components of total stock-based compensation expense included in the condensed consolidated statements of operations for the periods presented:
Three Months Ended
March 31,
20252024
(In thousands)
Cost of revenues$4,239 $4,182 
Research and development21,647 24,550 
Sales and marketing16,396 18,178 
General and administrative12,842 13,923 
Restructuring509  
Total$55,633 $60,833 
The following table summarizes the various types of stock-based compensation expense for the periods presented:
Three Months Ended
March 31,
20252024
(In thousands)
RSUs and PSUs$54,176 $58,787 
ESPP1,457 2,046 
Total$55,633 $60,833 
As of March 31, 2025, there was approximately $376.4 million of total unrecognized stock-based compensation expense related to unvested equity awards, which are expected to be recognized over a weighted-average period of 2.2 years.

Equity Awards Activity
Stock Options
No stock options were granted during the three months ended March 31, 2025 and 2024. Stock option activity during the period and stock options outstanding as of March 31, 2025 were immaterial.
Enphase Energy, Inc. | 2025 Form 10-Q | 24

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
Restricted Stock Units
The following table summarizes RSU activity:
Number of
Shares
Outstanding
Weighted-
Average
Fair Value
per Share at
Grant Date
Weighted-
Average
Remaining
Contractual
Term
Aggregate
Intrinsic
Value
(1)
(In thousands)(Years)(In thousands)
Outstanding at December 31, 20242,283 $139.27 
Granted615 65.27 
Vested(357)153.03 $21,716 
Canceled(158)140.43 
Outstanding at March 31, 20252,383 $118.04 1.5$147,824 
Expected to vest at March 31, 20252,374 $117.79 1.5$147,334 
(1)    The intrinsic value of RSUs vested is based upon the value of the Company’s stock when vested. The intrinsic value of RSUs outstanding and expected to vest as of March 31, 2025 is based on the closing price of the last trading day during the period ended March 31, 2025. The Company’s stock fair value used in this computation was $62.05 per share.
Performance Stock Units
The following summarizes PSU activity:
Number of
Shares
Outstanding
Weighted-
Average
Fair Value
per Share at
Grant Date
Weighted-
Average
Remaining
Contractual
Term
Aggregate
Intrinsic
Value
(1)
(In thousands)(Years)(In thousands)
Outstanding at December 31, 2024899 $154.67 
Granted1,128 77.71 
Vested(175)110.20 $10,017 
Canceled(197)118.43 
Outstanding at March 31, 20251,655 $111.23 1.8$102,672 
Expected to vest at March 31, 20251,655 $111.23 1.8$102,672 
(1)    The intrinsic value of PSUs vested is based upon the value of the Company’s stock when vested. The intrinsic value of PSUs outstanding and expected to vest as of March 31, 2025 is based on the closing price of the last trading day during the period ended March 31, 2025. The Company’s stock fair value used in this computation was $62.05 per share.
13.    INCOME TAXES
For the three months ended March 31, 2025 and 2024, the Company’s income tax provision totaled $17.2 million and $4.6 million, respectively, on income (loss) before income taxes of $46.9 million and $11.5 million, respectively. For the three months ended March 31, 2025 the income tax provision was calculated using the annualized effective tax rate method and was primarily due to tax expense in U.S. and foreign jurisdictions that are profitable, tax expense from equity compensation shortfalls, and prior year true up adjustments. For the three months ended March 31, 2024, the income tax provision was calculated using the annualized effective tax rate method and was primarily due to tax expense from equity compensation shortfalls, offset by tax benefit from year-to-date loss before income taxes.
For the three months ended March 31, 2025 and 2024, in accordance with FASB guidance for interim reporting of income tax, the Company has computed its provision for income taxes based on a projected annual effective tax rate while excluding loss jurisdictions, which cannot be benefited.
Enphase Energy, Inc. | 2025 Form 10-Q | 25

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
In December 2021, the Organization for Economic Co-operation and Development Inclusive Framework on Base Erosion Profit Shifting released Model Global Anti-Base Erosion rules (“Model Rules”) under Pillar Two. The Model Rules set forth the “common approach” for a Global Minimum Tax at 15 percent for multinational enterprises with a turnover of more than 750 million euros. The Company does not expect adoption of Pillar Two rules to have a significant impact on its consolidated financial statements during fiscal year 2025.
14.    NET INCOME (LOSS) PER SHARE
Basic net income (loss) per share is computed by dividing net income (loss) by the weighted average number of shares of common stock outstanding during the period. Diluted net income per share is computed in a similar manner, but it also includes the effect of potential common shares outstanding during the period, when dilutive.
The following table presents the computation of basic and diluted net income (loss) per share for the periods presented:
Three Months Ended
March 31,
20252024
(In thousands, except per share data)
Numerator:
Net income (loss)$29,730 $(16,097)
Notes due 2028 and Notes due 2026 financing costs, net605  
Adjusted net income (loss)$30,335 $(16,097)
Denominator:
Shares used in basic per share amounts:
Weighted average common shares outstanding131,869 135,891 
Shares used in diluted per share amounts:
Weighted average common shares outstanding used for basic calculation131,869 135,891 
Effect of dilutive securities:
Employee stock-based awards264  
Notes due 20262,057  
Notes due 20282,018  
Weighted average common shares outstanding for diluted calculation136,208 135,891 
Basic and diluted net income (loss) per share
Net income (loss) per share, basic$0.23 $(0.12)
Net income (loss) per share, diluted$0.22 $(0.12)
Diluted earnings per share for the three months ended March 31, 2025 includes the dilutive effect of potentially dilutive common shares by application of the treasury stock method for stock options, RSUs, PSUs, ESPP, Notes due 2025, and includes potentially dilutive common shares by application of the if-converted method for the Notes due 2026 and Notes due 2028. To the extent these potential common shares are antidilutive, they are excluded from the calculation of diluted net income per share.
Further, the Company under the relevant sections of the indentures, irrevocably may elect to settle principal in cash and any excess in cash or shares of the Company’s common stock for the Notes due 2026 and Notes due 2028. If and when the Company makes such election, there will be no adjustment to the net income and the Company will use the average share price for the period to determine the potential number of shares to be issued based upon assumed conversion to be included in the diluted share count.
The Company's Notes due 2025 were convertible at any time from October 1, 2024, until the close of business on the second scheduled trading day immediately preceding the maturity date of March 1, 2025. Upon
Enphase Energy, Inc. | 2025 Form 10-Q | 26

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
conversion, the Notes due 2025 were required to be settled using a combination settlement method, whereby the principal amount was paid in cash, and any excess conversion value was settled in shares of the Company's common stock. As a result of this settlement, no adjustment to net income was required for the three months ended March 31, 2025. For purposes of calculating diluted earnings per share, the Company utilized the average share price during the period from January 1, 2025 through March 1, 2025 to determine the potential number of shares issuable upon conversion and be included in the diluted share count.
The following outstanding shares of common stock equivalents were excluded from the calculation of the diluted net income (loss) per share attributable to common stockholders because their effect would have been antidilutive:
Three Months Ended
March 31,
20252024
(In thousands)
Employee stock-based awards3,071 1,656 
Notes due 2025323 1,253 
Notes due 2026 2,057 
2026 Warrants10,879 4,958 
Notes due 2028 2,018 
2028 Warrants10,675 4,865 
Total24,948 16,807 
15.    SEGMENT INFORMATION
The Company’s chief operating decision maker is the Chief Executive Officer (the “CEO”). The Company has one business activity, which entails the design, development, manufacture and sale of solutions for the solar PV industry. There are no segment managers who are held accountable for operations, operating results or plans for levels or components below the consolidated unit level. Accordingly, management has determined that the Company has a single operating and reportable segment. The primary measure of segment profit or loss is consolidated net income as presented below and is used by the CEO for the purpose of evaluating segment performance and allocation of budget to support business expansion, new product development and operational efficiencies.
Enphase Energy, Inc. | 2025 Form 10-Q | 27

ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
Three Months Ended
March 31,
20252024
(In thousands)
Net revenues$356,084 $263,339 
Less:
Other cost of revenues(1)
219,882 155,493 
Income-based government grants(53,631)(18,617)
Incremental cost for manufacturing in the United States(2)
15,773 4,882 
Stock-based compensation expense55,633 60,833 
Acquisition related amortization4,429 5,353 
Other restructuring and asset impairment charges(3)
2,653 1,907 
Other research and development(4)
28,527 29,661 
Other sales and marketing(5)
29,703 31,667 
Other general and administrative(6)
21,193 21,259 
Income (loss) from operations31,922 (29,099)
Total other income, net14,971 17,600 
Income (loss) from income taxes46,893 (11,499)
Income tax provision(17,163)(4,598)
Net Income (loss)$29,730 $(16,097)
(1)    Represents consolidated cost of revenue, excluding stock-based compensation, acquisition related amortization, income-based government grants and incremental costs for manufacturing in the United States.
(2)    Represents the incremental manufacturing cost incurred in the United States relative to manufacturing in India. This is calculated based on the difference in product cost for manufacturing the product in the United States as compared to India for the same or similar products. It also includes the portion of the income-based government grants earned that the Company remits to its contract manufacturers.
(3)    Represents consolidated restructuring and asset impairment charges, excluding stock-based compensation.
(4)    Represents consolidated research and development, excluding stock-based compensation.
(5)    Represents consolidated sales and marketing, excluding stock-based compensation and acquisition related amortization.
(6)    Represents consolidated general and administrative, excluding stock-based compensation.

Enphase Energy, Inc. | 2025 Form 10-Q | 28

Item 2.    Management’s Discussion and Analysis of Financial Condition and Results of Operations
Forward-Looking Statements
The following discussion and analysis of our financial condition and results of operations should be read together with our condensed consolidated financial statements and related notes appearing elsewhere in this Quarterly Report on Form 10-Q. This discussion contains forward-looking statements reflecting our current expectations and involves risks and uncertainties. In some cases, you can identify forward-looking statements by terminology such as “may,” “will,” “should,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “intend,” “potential,” “aim” or “continue” or the negative of these terms or other comparable terminology. Such statements, include but are not limited to statements regarding: our expectations as to future financial performance, including expenses, liquidity sources and cash requirements; the capabilities, performance and competitive advantage of our technology and products and planned changes; timing of new product releases, and the anticipated market adoption of our current and future products; our expectations regarding demand for our products; our business strategies, including anticipated trends and operating conditions; growth of and development in markets we target, and our expansion into new and existing markets; our performance in operations, including factors affecting our supply chain; our product quality and customer service; our expectations regarding the macroeconomic environment, geopolitical developments, including the effects of tariffs, which may impact our business operations, financial performance and the markets in which we, our suppliers, manufacturers and installers operate; and the importance of and anticipated benefits from government incentives for solar products, including through changes in the tax laws, rules and regulations. You should be aware that the forward-looking statements contained in this report are based on our current views and assumptions, and are subject to known and unknown risks, uncertainties and other factors that may cause actual events or results to differ materially. For a discussion identifying some of the important factors that could cause actual results to vary materially from those anticipated in the forward-looking statements, see below, those discussed in the section entitled “Risk Factors” herein and those included in our Annual Report on Form 10-K for the year ended December 31, 2024 filed on February 10, 2025 (the “Form 10-K”). Unless the context requires otherwise, references in this report to “Enphase,” “we,” “us” and “our” refer to Enphase Energy, Inc. and its consolidated subsidiaries.
Business Overview
We are a global energy technology company. We deliver smart, easy-to-use solutions that manage solar generation, storage and communication on one platform. Our intelligent microinverters work with virtually every solar panel made, and when paired with our smart technology, result in one of the industry’s best-performing clean energy systems. As of March 31, 2025, we have shipped approximately 81.5 million microinverters, and approximately 4.8 million Enphase residential and commercial systems have been deployed in over 160 countries.
The Enphase® Energy System™, powered by IQ® Microinverters and IQ® Batteries, our current generation integrated solar, storage and energy management offering, enables self-consumption and delivers our core value proposition of yielding more energy, simplifying design and installation and improving system uptime and reliability. The IQ family of microinverters, like all of our previous microinverters, is fully compliant with NEC 2014 and 2017 rapid shutdown requirements. Unlike string inverters, this capability is built-in, with no additional equipment necessary.
The Enphase Energy System brings a high technology, networked approach to solar generation plus energy storage, by leveraging our design expertise across power electronics, semiconductors and cloud-based software technologies. Our integrated approach to energy solutions maximizes a home’s energy potential while providing advanced monitoring and remote maintenance capabilities. The Enphase Energy System with IQ uses a single technology platform for seamless management of the whole solution, enabling rapid commissioning with the Enphase® Installer App and consumption monitoring with IQ® Gateway with IQ® Combiner+, Enphase® App, a cloud-based energy management platform, and our IQ Battery. System owners can use the Enphase App to monitor their home’s solar generation, energy storage and consumption from any web-enabled device. Unlike some of our competitors, who utilize a traditional inverter, or offer separate components of solutions, we have built-in system redundancy in both photovoltaic generation and energy storage, eliminating the risk that comes with a single point of failure. Further, the nature of our cloud-based, monitored system allows for remote firmware and software updates, enabling cost-effective remote maintenance and ongoing utility compliance.
Enphase Energy, Inc. | 2025 Form 10-Q | 29

We sell primarily to solar distributors who combine our products with others, including solar module products and racking systems, and resell to installers in each target region. In addition to our solar distributors, we sell directly to select large installers, original equipment manufacturers (“OEMs”) and strategic partners. Our OEM customers include solar module manufacturers who integrate our microinverters with their solar module products and resell to both distributors and installers. Strategic partners include providers of solar financing solutions. We also sell certain products and services to homeowners primarily in support of our warranty services and legacy product upgrade programs, via our online store.
Global Events Affecting our Business and Operations
As we have a growing global footprint, we are subject to risk and exposure from the evolving macroeconomic environment, including the effects of increased global inflationary pressures, tariffs and interest rates, fluctuations in foreign currency exchange rates, potential economic slowdowns or recessions, geopolitical pressures and potential regulatory changes, including the unknown impacts of current and future trade regulations. We continuously monitor the direct and indirect impacts of these circumstances on our business and financial results.
Trade Tariff Uncertainties. It is uncertain what impact new or existing tariffs, trade restrictions or retaliatory actions may have on us, the solar industry and our customers. We have relocated a significant portion of our contract manufacturing to the United States while continuing to utilize contract manufacturing in China and India. However, certain critical components for our products are still sourced from outside the United States.
For example, lithium iron phosphate ("LFP") battery cells used in our energy storage systems are currently supplied exclusively by two vendors located in China. While we are actively exploring alternative suppliers outside of China, the global supply chain for LFP battery cells remains heavily concentrated in China, and identifying qualified suppliers with the necessary expertise and capacity remains challenging.
An escalation in trade tensions or the implementation of broader tariffs, trade restrictions or retaliatory measures on our products or components originating from countries outside the United States could adversely impact our ability to source necessary components, manufacture products at competitive cost, or sell our products at prices customers are willing to pay. Any such developments could materially and adversely affect our business operations, results of operations and cash flows.
Demand for Products. The demand environment for our products remained challenged during the three months ended March 31, 2025, following a broad-based slowdown beginning in the second quarter of 2023 in the United States and in the third quarter of 2023 in Europe. This prolonged softness in demand has continued to adversely impact certain distributors and installers, contributing to reduced liquidity, bankruptcies and business closures across the channel. These disruptions have negatively affected our revenue and profitability, and led to higher allowances for credit losses.
In the United States, this slowdown was primarily the result of higher interest rates, high channel inventory and the transition from NEM 2.0 to NEM 3.0 in California. Higher interest rates resulted in larger monthly costs and longer pay-back periods for those customers who financed their systems. In Europe, this slowdown was primarily driven by a softer customer demand as utility rates dropped and policy changes were implemented. This resulted in oversupply, financial stresses throughout the industry and the resulting channel inventory correction. In addition, there has been increased uncertainty in NEM policies and solar export penalties in a key European market. The phase out of NEM in that market was ultimately not approved but solar export penalties are still causing uncertainty among consumers. While we believe we have made the appropriate corrections to our channel inventory, some of the foregoing trends in the United States and Europe could continue to have an adverse effect on our results of operations in 2025.
Products
The Enphase Energy System, powered by IQ Microinverters, IQ Batteries and other products and services, is an integrated solar, storage and energy management offering that enables self-consumption and delivers our core value proposition of yielding more energy, simplifying design and installation, and improving system uptime and reliability.
IQ Microinverters. We ship IQ8™ series microinverters into 58 countries worldwide. We are also shipping IQ8 Microinverters with peak output power of 480 W AC for the small-commercial market in North America, and grid-tied applications in South Africa, Mexico, Brazil, India, Thailand, the Philippines, France, Spain, Poland, Columbia, Panama, Costa Rica, Vietnam, Malaysia, and 13 Caribbean countries. Our IQ8 Microinverters are designed to
Enphase Energy, Inc. | 2025 Form 10-Q | 30

maximize energy production and can manage a continuous DC current of 14 amperes, supporting higher powered solar modules through increased energy harvesting.
Our new IQ8 Microinverter, the IQ8P-3P™ for the small commercial solar market in North America, enables a peak output power of up to 480 W, supporting small three-phase commercial applications and newer, high-powered solar panels.
We now ship the IQ8HC™ Microinverters supplied from our contract manufacturing facilities in the United States with higher domestic content than previous models when paired with other U.S.-made solar equipment that could qualify for the domestic content bonus tax credit under the Inflation Reduction Act of 2022 (“IRA”).
IQ Batteries. Our Enphase IQ Battery storage systems, with usable and scalable capacity of 10.1 kWh and 3.4 kWh for the United States, and 10.5 kWh and 3.5 kWh for Europe and other international countries, are based on our Ensemble OS™ energy system, which powers our grid-independent microinverter-based storage systems. We currently ship our Enphase IQ Battery storage systems to customers in the United States, Puerto Rico, Canada, Mexico, Australia, New Zealand, Belgium, Germany, the United Kingdom, Italy, Austria, France, the Netherlands, Luxembourg, Finland, Switzerland, Spain, Portugal, Sweden, Denmark and Greece. Enphase IQ Batteries in Europe can be installed with both single-phase and three-phase third-party solar energy inverters, enabling homeowners to upgrade their existing home solar systems with a residential battery storage solution that reduces costs while providing increased self-reliance.
The IQ Battery 5P is modular with 5 kWh capacity and the IQ8 Microinverters provide a peak output power of 384 W. The IQ Battery 5P is available for customers in Australia, New Zealand, the United States, Puerto Rico, Mexico, Canada, the United Kingdom, Italy, France, the Netherlands, Luxembourg, Belgium, Romania and India. We recently introduced our IQ Battery 5P with FlexPhase an all-in-one AC-coupled system that delivers reliable backup power and supports both single-phase and three-phase applications, to customers in Germany, Austria, Switzerland, Luxembourg, Poland, Spain, Portugal, France and the Netherlands.
Electric Vehicle (“EV”) Chargers. Our EV chargers are compatible with most EVs sold in North America. Customers are able to purchase Enphase-branded EV chargers, which support both J1772 and North American Charging Standard connectors with a charging power range between 32 amperes and 64 amperes.
Our smart IQ® EV Chargers sold in the United States and Canada are Wi-Fi-equipped and include smart control and monitoring capabilities. The IQ EV Charger is designed to seamlessly integrate into our solar and battery system to help homeowners maximize electricity cost savings by charging directly from solar energy.
In late 2024, we made initial shipments of our IQ EV Charger 2 into Europe. Our most advanced residential charger to date, the IQ EV Charger 2 supports up to 22 kW of three-phase charging and can operate either as a standalone charger or fully integrated with our IQ Microinverters and IQ Batteries.
The new CS-100 EV Charger, our most powerful EV charger to date providing up to 19.2 kW of continuous power, is available for customers with commercial fleet EVs in the United States.
Results of Operations
Net Revenues 
Three Months Ended
March 31,
Change in
20252024
$
%
(In thousands, except percentages)
Net revenues
$356,084 $263,339 $92,745 35 %
Net revenues increased by $92.7 million, or 35%, in the three months ended March 31, 2025, as compared to the same period in 2024, driven primarily by a 11% increase in microinverter units sold and 125% increase in IQ Batteries MWh shipped. During the three months ended March 31, 2025, we sold approximately 1.5 million microinverter units and shipped 170.1 MWh of IQ Batteries, as compared to approximately 1.4 million microinverter units and 75.5 MWh of IQ Batteries shipped in the three months ended March 31, 2024.
Enphase Energy, Inc. | 2025 Form 10-Q | 31

Net revenues in the United States was $263.2 million in the three months ended March 31, 2025, as compared to $150.0 million in the same period in 2024, an increase of $113.3 million, or 76%, primarily driven by $54.3 million of microinverter shipments in the three months ended March 31, 2025 that are associated with a safe harbor sales agreement executed in December 2024, as well as actions taken to normalize channel inventory levels in the three months ended March 31, 2024. Net revenues from international geographical markets was $92.8 million in the three months ended March 31, 2025, as compared to $113.4 million in the same period in 2024, a decrease of $20.5 million, or 18%, primarily driven by continued softening in demand from customers in Europe, which was impacted by changes in government policies and lower utility rates.
Cost of Revenues and Gross Margin
Three Months Ended
March 31,
Change in
20252024
$
%
(In thousands, except percentages)
Cost of revenues
$187,843 $147,831 $40,012 27 %
Gross profit
168,241 115,508 52,733 46 %
Gross margin
47.2 %43.9 %
Cost of revenues increased by $40.0 million, or 27%, for the three months ended March 31, 2025, as compared to the same period in 2024. This increase was primarily driven by a higher volume of microinverter units sold and increased MWh of IQ Batteries shipped. This increase also included $15.7 million of incremental costs for manufacturing in the United States during the three months ended March 31, 2025, as compared to $4.9 million for the same period in 2024. This increase in cost of revenues was partially offset by benefits recognized from tax credits under the Advanced Manufacturing Production Tax Credit (“AMPTC”) for U.S. manufactured microinverters and IQ Batteries MW shipped to customers. The AMPTC benefits recognized were $53.6 million for the three months ended March 31, 2025, as compared to $18.6 million for the same period in 2024, resulting in a net IRA benefit of $37.9 million and $13.7 million, respectively.
Gross margin increased by 3.3 percentage points in the three months ended March 31, 2025, as compared to the same period in 2024. The increase was primarily due to recognition of a 10.6 percentage point net IRA benefit in the three months ended March 31, 2025, as compared to a 5.2 percentage point net IRA benefit in the same period in 2024, partially offset by product mix and higher warranty expense from changes in estimates for an increase in tariff costs on product replacements.
Research and Development
Three Months Ended
March 31,
Change in
20252024
$
%
(In thousands, except percentages)
Research and development$50,174 $54,211 $(4,037)(7)%
Percentage of net revenues14 %21 %
Research and development expense decreased by $4.0 million, or 7%, in the three months ended March 31, 2025, as compared to the same period in 2024. The decrease was primarily due to actions implemented in connection with the restructuring initiatives implemented in 2024 that lowered personnel-related expenses by $4.6 million due to a reduction in headcount offset by an increase in equipment and professional services costs by $0.5 million. The amount of research and development expenses may fluctuate from period to period due to the differing levels and stages of development activity for our products.
Sales and Marketing
Three Months Ended
March 31,
Change in
20252024
$
%
(In thousands, except percentages)
Sales and marketing$48,948 $53,307 $(4,359)(8)%
Percentage of net revenues14 %20 %
Enphase Energy, Inc. | 2025 Form 10-Q | 32

Sales and marketing expense decreased by $4.4 million, or 8%, in the three months ended March 31, 2025, as compared to the same period in 2024. The decrease was primarily due to actions implemented in connection with the restructuring initiatives implemented in 2024 that lowered professional services and advertising costs by $2.3 million and personnel-related expenses by $2.1 million due to a reduction in headcount.
General and Administrative
Three Months Ended
March 31,
Change in
20252024
$
%
(In thousands, except percentages)
General and administrative$34,035 $35,182 $(1,147)(3)%
Percentage of net revenues10 %13 %
General and administrative expense decreased by $1.1 million, or 3%, in the three months ended March 31, 2025, as compared to the same period in 2024. The decrease was primarily due to actions implemented in connection with the restructuring initiatives implemented in 2024 that lowered personnel-related costs by $1.6 million due to a reduction in headcount offset by an increase in professional services and facilities expense by $0.5 million.
Restructuring and Asset Impairment Charges
Three Months Ended
March 31,
Change in
20252024
$
%
(In thousands, except percentages)
Restructuring and asset impairment charges$3,162 $1,907 $1,255 66 %
Percentage of net revenues 0.9 %0.7 %
Restructuring and asset impairment charges are the net charges resulting from restructuring initiatives implemented in 2023 and 2024 to increase operational efficiencies, reduce operating costs, and to better align our workforce and cost structure with current market conditions, our business needs, and strategic priorities. Restructuring charges of $3.2 million in the three months ended March 31, 2025, primarily consisted of employee severance, one-time benefits and other employee related expenses. Restructuring charges of $1.9 million in the three months ended March 31, 2024, primarily consisted of $1.3 million of contract termination charges, $0.3 million of asset impairment charges, and $0.3 million of employee severance and one-time benefits.
Other Income, Net
Three Months Ended
March 31,
Change in
20252024
$
%
(In thousands, except percentages)
Interest income$17,032 $19,709 $(2,677)(14)%
Interest expense(2,047)(2,196)149 (7)%
Other income (expense), net(14)87 (101)(116)%
Total other income, net$14,971 $17,600 $(2,629)(15)%
Interest income of $17.0 million decreased in the three months ended March 31, 2025, as compared to $19.7 million in the three months ended March 31, 2024, primarily due to lower average cash balance and lower interest rates.
Interest expense of $2.0 million in the three months ended March 31, 2025, primarily included $2.0 million for the coupon interest, debt discount amortization with the Notes due 2025, and amortization of debt issuance costs with the Notes due 2025, Notes due 2026 and Notes due 2028. Interest expense of $2.2 million in the three months ended March 31, 2024, primarily included $2.2 million for the coupon interest, debt discount amortization with the Notes due 2025 and amortization of debt issuance costs with the Notes due 2025, Notes due 2026 and Notes due 2028.
Enphase Energy, Inc. | 2025 Form 10-Q | 33

Income Tax Provision
Three Months Ended
March 31,
Change in
20252024$
%
(In thousands, except percentages)
Income tax provision$17,163 $4,598 $12,565 273 %
The income tax provision was $17.2 million in the three months ended March 31, 2025, as compared to an income tax provision of $4.6 million in the same period in 2024. The increase was primarily due to higher projected tax expense as our operations in U.S. and foreign jurisdictions were more profitable in 2025, an increase in tax expense from equity compensation shortfalls in 2025, and prior year true up adjustments in 2025, as compared to the same period in 2024.
Liquidity and Capital Resources
Sources of Liquidity
As of March 31, 2025, we had $1.0 billion in net working capital, including cash, cash equivalents, restricted cash and marketable securities, of which approximately $1.4 billion were held in the United States. Our cash, cash equivalents, restricted cash and marketable securities primarily consist of U.S. Government agency securities and treasuries, money market mutual funds, corporate notes, commercial paper and bonds, and both interest-bearing and non-interest-bearing deposits, with the remainder held in various foreign subsidiaries. We consider amounts held outside the United States to be accessible and have provided for the estimated withholding tax liability on the repatriation of our foreign earnings.
Three Months Ended
March 31,
Change in
20252024$%
(In thousands, except percentages)
Cash, cash equivalents, restricted cash and marketable securities$1,531,870 $1,629,593 $(97,723)(6)%
Total Debt$1,201,891 $1,295,868 $(93,977)(7.3)%
Our cash, cash equivalents, restricted cash and marketable securities decreased by $97.7 million for the three months ended March 31, 2025, as compared to the same period in 2024, primarily due to repurchases of common stock pursuant to our share repurchase program, payout of the Notes due 2025, and payments of withholding taxes related to net share settlement of equity awards, partially offset by cash generated from operations.
Total carrying amount of debt decreased by $94.0 million for the three months ended March 31, 2025, as compared to the same period in 2024, primarily due to the payout of Notes due 2025, partially offset by accretion of issuance costs.
We expect that our principal short-term (over the next 12 months) cash needs related to our operations will be to fund working capital, strategic investments, acquisitions, repurchases of common stock and payments of withholding taxes for net share settlement of employee equity awards, payments on our outstanding debt and purchases of property and equipment. We plan to fund any cash requirements for the next 12 months from our existing cash, cash equivalents and marketable securities on hand, and cash generated from operations. For the long-term period (beyond 12 months), we aim to continue growing cash flows from operations to support our ongoing business operations and strategic investment plans. We regularly evaluate our liquidity position, debt obligations and expected cash requirements. As part of this ongoing assessment, we may pursue additional financing through the issuance of equity or the debt financing, as necessary, to meet our operational and investment needs. We anticipate that access to the debt market will be more limited compared to prior years as interest rates have increased and are expected to remain high. Our ability to obtain debt or any other additional financing that we may choose to, or need to, obtain will depend on, among other things, our development efforts, business plans, operating performance and the condition of the capital markets at the time we seek financing.
Enphase Energy, Inc. | 2025 Form 10-Q | 34

Repurchase of Common Stock. In July 2023, the board of directors authorized a share repurchase program (the “2023 Repurchase Program”) pursuant to which we were authorized to repurchase up to $1.0 billion of our common stock. The repurchases could be funded from available working capital and could be executed from time to time, subject to general business and market conditions and other investment opportunities, through open market purchases or privately negotiated transactions, including through Rule 10b5-1 plans. The 2023 Repurchase Program may be discontinued or amended at any time and expires on July 26, 2026. During the three months ended March 31, 2025, we repurchased 1,594,105 shares, for an aggregate amount of $100.0 million. Refer to Note 11. “Stockholders’ Equity,” of the notes to condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q.
Convertible Notes. As of March 31, 2025, our aggregate principal convertible notes obligations were $1,207.5 million, which primarily consisted of the Notes due 2028 of $575.0 million and Notes due 2026 of $632.5 million. Upon conversion of the Notes due 2026 and Notes due 2028, we expect to pay cash equal to the aggregate principal amount of the Notes of such series to be converted, and, at our election, will pay or deliver cash and/or shares of our common stock for the amount of our conversion obligation in excess of the aggregate principal amount of the Notes of such series. These conversions will be settled in a combination settlement method with the principal value settled in cash and the remaining value in shares of our common stock. Refer to Note 9. “Debt,” of the notes to condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q.
Cash Flows. The following table summarizes our cash flows for the periods presented:
Three Months Ended
March 31,
20252024
(In thousands)
Net cash provided by operating activities$48,414 $49,201 
Net cash provided by investing activities113,060 17,734 
Net cash used in financing activities(214,175)(100,854)
Effect of exchange rate changes on cash, cash equivalents and restricted cash3,675 (1,177)
Net decrease in cash, cash equivalents and restricted cash$(49,026)$(35,096)
Cash Flows from Operating Activities
Cash flows from operating activities consisted of our net income adjusted for certain non-cash reconciling items, such as stock-based compensation expense, non-cash interest expense, change in the fair value of debt securities, deferred income taxes, depreciation and amortization, and changes in our operating assets and liabilities. Net cash provided by operating activities decreased by $0.8 million for the three months ended March 31, 2025, as compared to the same period in 2024.
Cash Flows from Investing Activities
For the three months ended March 31, 2025, net cash provided by investing activities of $113.1 million was primarily from the maturities of $134.6 million of marketable securities, net of purchases, partially offset by $14.6 million used in purchases of test and assembly equipment for U.S. manufacturing, related facility improvements and information technology enhancements, including capitalized costs related to internal-use software and $6.9 million used in an investment in a tax equity fund.
For the three months ended March 31, 2024, net cash used in investing activities of $17.7 million was primarily from the purchase of $241.0 million of marketable securities, net of sale and maturities, $110.4 million used in purchases of test and assembly equipment to expand our supply capacity, related facility improvements and information technology enhancements, including capitalized costs related to internal-use software, and $15.0 million used in the investment of a private company.
Cash Flows from Financing Activities
For the three months ended March 31, 2025, net cash used in financing activities of approximately $214.2 million was primarily from payment of $102.2 million towards the settlement of the Notes due 2025, $100.0 million used to repurchase our common stock under the 2023 Repurchase Program, and payment of $12.1 million in employee withholding taxes related to net share settlement of employee equity awards.
Enphase Energy, Inc. | 2025 Form 10-Q | 35

For the three months ended March 31, 2024, net cash used in financing activities of approximately $100.9 million was primarily from payment of $60.0 million in employee withholding taxes related to net share settlement of equity awards, $42.0 million used to repurchase our common stock under the 2023 Repurchase Program, and less than $0.1 million from the partial settlement of the Notes due 2025, partially offset by $1.2 million net proceeds from employee stock option exercises.
Contractual Obligations
Our contractual obligations primarily consist of the Notes due 2028 and Notes due 2026, obligations under operating leases and inventory component purchases. As of March 31, 2025, there have been no material changes from our disclosure in the Form 10-K, except that (i) we settled all of our outstanding Notes due 2025 for $102.2 million in cash and (ii) the Notes due 2026 mature in less than a year and are now classified as Debt, current on the condensed consolidated balance sheet as of March 31, 2025. For more information on our future minimum operating leases and inventory component purchase obligations as of March 31, 2025, refer to Note 10, “Commitments and Contingencies - Purchase Obligations” and for more information on our notes and other related debt, refer to Note 9, “Debt” of the notes to condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q.
Critical Accounting Policies
Our condensed consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”). In connection with the preparation of our condensed consolidated financial statements, we are required to make assumptions and estimates about future events and apply judgments that affect the reported amounts of assets, liabilities, revenue, expenses and related disclosures. We base our assumptions, estimates and judgments on historical experience, current trends and other factors that management believes to be relevant at the time our condensed consolidated financial statements are prepared. On a regular basis, we review the accounting policies, assumptions, estimates and judgments to ensure that our condensed consolidated financial statements are presented fairly and in accordance with U.S. GAAP. However, because future events and their effects cannot be determined with certainty, actual results could differ from our assumptions and estimates. To the extent that there are material differences between these estimates and actual results, our future financial statement presentation, financial condition, results of operations and cash flows will be affected.
We consider an accounting policy to be critical if it requires an accounting estimate to be made based on assumptions about matters that are highly uncertain at the time the estimate is made, and if different estimates that reasonably could have been used, or changes in the accounting estimates that are reasonably likely to occur periodically, could materially impact the condensed consolidated financial statements. There have been no changes to our critical accounting policies as described in the Form 10-K.
Adoption of New and Recently Issued Accounting Pronouncements
Refer to Note 1, “Description of Business and Basis of Presentation - Summary of Significant Accounting Policies” of the notes to condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q for a discussion of adoption of new accounting pronouncements.
Item 3.    Quantitative and Qualitative Disclosures About Market Risk
There have been no material changes in our market risk compared to the disclosures in Part II, Item 7A, “Quantitative and Qualitative Disclosures About Market Risk” in the Form 10-K. Also see the section entitled “Risk Factors” in Part I, Item 1A in the Form 10-K.
Enphase Energy, Inc. | 2025 Form 10-Q | 36

Item 4.    Controls and Procedures
Evaluation of Disclosure Controls and Procedures
Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures as of March 31, 2025. The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), includes, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure. Based on the evaluation of our disclosure controls and procedures as of March 31, 2025, our Chief Executive Officer and Chief Financial Officer concluded that, as of such date, our disclosure controls and procedures were effective.
Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures.
Changes in Internal Control
There were no changes in our internal control over financial reporting identified in management’s evaluation pursuant to Rules 13a-15(d) or 15d-15(d) of the Exchange Act during the period covered by this Quarterly Report on Form 10-Q that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Enphase Energy, Inc. | 2025 Form 10-Q | 37

PART II. OTHER INFORMATION
Item 1.    Legal Proceedings
From time to time, we might be subject to various legal proceedings relating to claims arising out of our operations. The outcome of litigation is inherently uncertain. If one or more legal matters were resolved against us in a reporting period for amounts above management’s expectations, our business, results of operations, financial position and cash flows for that reporting period could be materially adversely affected. Except as described in this Item 3, we are not currently involved in any material legal proceedings, the ultimate disposition of which could have a material adverse effect on our operations, financial condition or cash flows.
Securities Class Action Lawsuits
On July 15, 2024, a putative class action complaint was filed against us, our chief executive officer and our chief financial officer (collectively, the “Defendants”) in the United States District Court for the Northern District of California, captioned Hayes v. Enphase Energy, Inc., Case No. 3:24-cv-04249 (the “Securities Class Action”), purportedly on behalf of a class of individuals who purchased or otherwise acquired our common stock between December 12, 2022 and April 25, 2023. The Securities Class Action alleges that Defendants made false and/or misleading statements in violation of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 (the “Exchange Act”) and Rule 10b-5 promulgated thereunder. The complaint seeks unspecified monetary damages and other relief.
On or about July 29, 2024, six additional stockholders filed motions to be appointed lead plaintiff and have their selection of counsel appointed as lead counsel in the Securities Class Action. The Court held a hearing on the lead plaintiff motions on September 5, 2024, and appointed Lon D. Praytor as lead plaintiff. On April 17, 2025, movant Andrey Ponomarchuk filed a motion for reconsideration of the Court’s order appointing Praytor as lead plaintiff. The Court has not yet entered a case schedule.
On December 13, 2024, another putative class action complaint was filed naming us, our chief executive officer and our chief products officer (collectively, “Defendants II”) in the United States District Court for the Northern District of California, captioned Trustees of the Welfare and Pension Funds of Local 464A v. Enphase Energy, Inc., Case No. 4:24-cv-09038 (the “Pension Fund Action”), purportedly on behalf of a class of individuals who purchased or otherwise acquired our common stock between April 25, 2023 and October 22, 2024. The Pension Fund Action alleges that Defendants II made false and/or misleading statements in violation of Sections 10(b) and 20(a) of the Exchange Act and Rule 10b-5 promulgated thereunder. The complaint seeks unspecified monetary damages and other relief.
On or about February 11, 2025, several additional stockholders moved to be appointed lead plaintiff in the Pension Fund Action and have their selection of counsel appointed as lead counsel. On March 31, 2025, the Court vacated a hearing on the motions scheduled for April 10, 2025 and took the matter under submission. The Court has not yet issued a decision. Once a lead plaintiff and lead counsel are appointed, the parties will negotiate a schedule for an anticipated amended complaint and motion to dismiss. We dispute the allegations in each of the above-referenced lawsuits and intend to defend the matters vigorously.
Shareholder Derivative Lawsuits
On July 16, 2024, a shareholder derivative lawsuit was filed purportedly on our behalf against the Defendants, our non-employee directors and us (as nominal defendant) in the United States District Court for the Northern District of California, captioned Ibarra v. Kothandaraman, et al., Case No. 3:24-cv-04278 (the “Ibarra Action”). The Ibarra Action asserts claims for breaches of fiduciary duty, unjust enrichment, abuse of control, gross mismanagement, waste of corporate assets, and violations of Sections 14(a), 10(b) and 20(a) of the Exchange Act, and contribution under Sections 10(b) and 21D of the Exchange Act based on the purported dissemination of substantially the same allegedly false and misleading statements asserted in the Securities Class Action. The Ibarra Action is seeking unspecified damages and other relief, including reforms and improvements to our corporate governance and internal procedures.
On September 5, 2024, another shareholder derivative lawsuit was filed purportedly on our behalf against the Defendants, our non-employee directors and us (as nominal defendant) in the United States District Court for the Northern District of California, captioned Isaac v. Kothandaraman, et al., Case No. 4:24-cv-06257 (the “Isaac Action”), containing substantially the same allegations as those in the Ibarra Action. On September 20, 2024, the Court consolidated the Isaac and Ibarra Actions for all purposes into one action under the title In re Enphase Energy, Inc. Stockholder Derivative Litigation (the “Derivative Action”).
Enphase Energy, Inc. | 2025 Form 10-Q | 38

On October 11, 2024, the Court granted the parties’ stipulation to stay the Derivative Action until all motions to dismiss the Securities Class Action are decided.
On December 31, 2024, a shareholder derivative lawsuit was filed purportedly on our behalf against Defendants II, our non-employee directors and us (as nominal defendant) in the United States District Court for the Northern District of California, captioned Hirani v. Kothandaraman, et al., Case No. 4:24-cv-09532 (the “Hirani Action”). The Hirani Action asserts claims for breaches of fiduciary duty, unjust enrichment, abuse of control, gross mismanagement, waste of corporate assets, and violations of Sections 14(a), 10(b) and 20(a) of the Exchange Act, and contribution under Sections 10(b) and 21D of the Exchange Act based on the purported dissemination of substantially the same allegedly false and misleading statements asserted in the Pension Fund Action. The Hirani Action is seeking unspecified damages and other relief, including reforms and improvements to our corporate governance and internal procedures.
On January 17, 2025, another shareholder derivative lawsuit was filed purportedly on our behalf against Defendants II, our non-employee directors and us (as nominal defendant) in the United States District Court for the Northern District of California, captioned Hanowski v. Kothandaraman, et al., Case No. 4:25-cv-000652 (the “Hanowski Action”). The Hanowski Action asserts claims substantially similar to those asserted in the Hirani Action, also based on the same allegedly false and misleading statements asserted in the Pension Fund Action. The Hanowski Action is seeking unspecified damages and other relief, including reforms and improvements to our corporate governance and internal procedures.
On January 31, 2025, the plaintiffs in the Hirani and Hanowski Actions filed a motion to relate their actions to the Pension Fund Action, which the Court approved on February 18, 2025. On March 7, 2025, the Court granted the parties’ stipulation to consolidate the Hirani and Hanowski Actions for all purposes into one action under the title In re Enphase Energy, Inc. 2025 Shareholder Derivative Litigation (the “Derivative II Action”).
We dispute the allegations in each of the above-referenced lawsuits and intend to defend the matters vigorously.
The pending lawsuits and any other related lawsuits are subject to inherent uncertainties, and the actual defense and disposition costs will depend upon many unknown factors. We could be forced to expend significant resources in the defense of the pending lawsuits and any additional lawsuits, and we may not prevail. In addition, we may incur substantial legal fees and costs in connection with such lawsuits.
Item 1A.    Risk Factors
Investing in our securities involves a high degree of risk. Before investing in our securities, you should consider carefully the information contained in this Quarterly Report on Form 10-Q and in the Form 10-K, including the risk factors identified in Part I, Item 1A, “Risk Factors” thereof. This Quarterly Report on Form 10-Q contains forward-looking statements that involve risks and uncertainties. See “Forward-Looking Statements” in “Management’s Discussion and Analysis of Financial Conditions and Results of Operations” above. Our actual results could differ materially from those contained in the forward-looking statements. Any of the risks discussed in the Form 10-K, in other reports we file with the Securities and Exchange Commission, and other risks we have not anticipated or discussed, could have a material adverse impact on our business, financial condition or results of operations. Except as set forth below, there has been no material change to our risk factors from those disclosed in Part I, Item 1A, “Risk Factors” in the Form 10‑K.
Changes in the United States trade environment, including the imposition of import tariffs, could adversely affect the amount or timing of our revenue, results of operations or cash flows.
The United States has recently imposed significant new tariffs on nearly all products and components imported into the United States and could propose additional tariffs or increases to those already in place. A subset of our products is sourced from China and India, and certain components necessary to manufacture our products in the United States, including our microinverters, batteries and related accessories, are imported from China, India, Taiwan, Vietnam and Japan, among other countries. It is unknown whether and to what extent these tariffs will remain in place or if other new laws or regulations will be adopted. Due to broad uncertainty regarding the timing, content and extent of any regulatory changes in the United States or abroad, we cannot predict the impact, if any, that these changes could have to our business, financial condition and results of operations.
It is unknown what effect any such new tariffs or retaliatory actions will have on the solar industry and our customers. We have moved a significant portion of our contract manufacturing to the United States, while retaining
Enphase Energy, Inc. | 2025 Form 10-Q | 39

limited contract manufacturing in China and India. However, certain components necessary for our products are still required to be imported from outside the United States. Our LFP battery cells for our storage products are supplied solely via our two suppliers in China. Although we are in the process of searching for other vendors outside of China for future supplies, the expertise and industry for the LFP battery cell is primarily in China, and it will require significant effort to identify qualified suppliers with the right expertise to develop our battery cells. The resulting environment of retaliatory trade or other practices or additional trade restrictions or barriers, if implemented on a broader range of products or components from outside the United States, could harm our ability to obtain necessary product components or to sell our products at prices customers are willing to pay, which could have a material adverse effect on our business, prospects, results of operations and cash flows.
Further, if the price of solar power systems in the United States increases, as well as the cost of manufacturing our products in the United States, the use of solar power systems could become less economically feasible and could reduce our gross margins or reduce the demand of solar power systems manufactured and sold, which in turn may decrease demand for our products. Additionally, existing or future tariffs may negatively affect key partners, suppliers and manufacturers. Such outcomes could adversely affect the amount or timing of our revenue, results of operations or cash flows, and continuing uncertainty could cause sales volatility, price fluctuations or supply shortages or cause our customers to advance or delay their purchase of our products. It is difficult to predict what further trade-related actions governments may take, which may include additional or increased tariffs and trade restrictions, and we may be unable to quickly and effectively react to such actions. As additional new tariffs, legislation and/or regulations are implemented, or if existing trade agreements are renegotiated or if affected countries take retaliatory trade actions, such changes could have a material adverse effect on our business, financial condition, results of operations or cash flows.

Item 5.    Other Information
Rule 10b5-1 Trading Plans
Not applicable.
Item 2.    Unregistered Sales of Equity Securities and Use of Proceeds
Stock Repurchase Program
In July 2023, our board of directors authorized the 2023 Repurchase Program pursuant to which we may repurchase up to an aggregate of $1.0 billion of our common stock. As of March 31, 2025, we have approximately $298.7 million remaining for repurchase of shares under the 2023 Repurchase Program. Purchases may be completed from time to time in the open market or privately negotiated transactions, including through Rule 10b5-1 plans. The 2023 Repurchase Program may be discontinued or amended at any time and expires on July 26, 2026.
The following table provides information about our repurchases of our common stock during the three months ended March 31, 2025 (in thousands, except per share amounts):
Period Ended
Total Number of Shares Purchased
Average Price Paid per Share(1)
Total Number of Shares Purchased as Part of Publicly Announced Programs
Approximate Dollar Value of Shares that May Yet Be Purchased Under the Programs(2)
January 2025— $— — $398,638 
February 20251,594,105 $62.71 1,594,105 $298,674 
March 2025— $— — $298,674 
Total
1,594,105 1,594,105 
(1)     Average price paid per share includes brokerage commissions.
(2)     During the three months ended March 31, 2025, we repurchased 1,594,105 shares of our common stock at a weighted average price of $62.71 per share for an aggregate amount of $100.0 million.
Item 3.    Defaults Upon Senior Securities
None.
Enphase Energy, Inc. | 2025 Form 10-Q | 40

Item 4.    Mine Safety Disclosures
Not applicable.
Item 6.    Exhibits
A list of exhibits filed with this report or incorporated herein by reference is found in the Exhibit Index below.

Incorporation by Reference
Exhibit NumberExhibit DescriptionFormSEC File No.ExhibitFiling DateFiled Herewith
8-K001-354803.14/6/2012
10-Q001-354803.18/9/2017
10-Q001-354802.18/6/2018
8-K001-354803.15/27/2020
S-8333-2562904.55/19/2021
8-K
001-354803.14/8/2022
X
X
X
101.INS
XBRL Instance Document.
X
101.SCH
XBRL Taxonomy Extension Schema Document.
X
101.CAL
XBRL Taxonomy Extension Calculation Linkbase Document.
X
101.DEF
XBRL Taxonomy Extension Definition Linkbase Document.
X
101.LAB
XBRL Taxonomy Extension Label Linkbase Document.
X
101.PRE
XBRL Taxonomy Extension Presentation Document.
X
104
Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibits 101).
X
* The certifications attached as Exhibit 32.1 accompany this Quarterly Report on Form 10-Q pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act, and shall not be deemed “filed” by Enphase Energy, Inc. for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing.
Enphase Energy, Inc. | 2025 Form 10-Q | 41


SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this Quarterly Report on Form 10-Q to be signed on its behalf by the undersigned, thereunto duly authorized.

Dated: April 22, 2025
Enphase Energy, Inc.
By:
/s/ Mandy Yang
Mandy Yang
Executive Vice President and Chief Financial Officer
(Principal Financial Officer)
(Duly Authorized Officer)

Enphase Energy, Inc. | 2025 Form 10-Q | 42

Exhibit 31.1
CERTIFICATION
I, Badrinarayanan Kothandaraman, certify that:
1.I have reviewed this Form 10-Q of Enphase Energy, Inc.;
2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:
a.designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
b.designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
c.evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
d.disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and
5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 22, 2025

/s/ BADRINARAYANAN KOTHANDARAMAN
Badrinarayanan Kothandaraman
President and Chief Executive Officer
(Principal Executive Officer)



Exhibit 31.2
CERTIFICATION
I, Mandy Yang, certify that:
1.I have reviewed this Form 10-Q of Enphase Energy, Inc.;
2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:
a.designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
b.designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
c.evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
d.disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and
5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 22, 2025

/s/ MANDY YANG
Mandy Yang
Executive Vice President and Chief Financial Officer
(Principal Financial Officer)



Exhibit 32.1
CERTIFICATION
Pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. §1350), Badrinarayanan Kothandaraman, President and Chief Executive Officer of Enphase Energy, Inc. (the “Company”), and Mandy Yang, Executive Vice President and Chief Financial Officer of the Company, each hereby certifies that, to the best of his or her knowledge:
1. The Company’s Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2025, to which this Certification is attached as Exhibit 32.1 (the “Periodic Report”), fully complies with the requirements of Section 13(a) or Section 15(d) of the Exchange Act; and
2. The information contained in the Periodic Report fairly presents, in all material respects, the financial condition and results of operations of the Company.


Date: April 22, 2025
April 22, 2025
/s/ BADRINARAYANAN KOTHANDARAMAN/s/ MANDY YANG
Badrinarayanan KothandaramanMandy Yang
President and Chief Executive Officer
(Principal Executive Officer)
Executive Vice President and Chief Financial Officer
(Principal Financial Officer)

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002, has been provided to Enphase Energy, Inc. and will be retained by it and furnished to the Securities and Exchange Commission or its staff upon request.

v3.25.1
COVER PAGE - shares
3 Months Ended
Mar. 31, 2025
Apr. 18, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2025  
Document Transition Report false  
Entity File Number 001-35480  
Entity Registrant Name Enphase Energy, Inc.  
Entity Incorporation, State DE  
Entity Tax Identification Number 20-4645388  
Entity Address, Address Line One 47281 Bayside Parkway  
Entity Address, City or Town Fremont  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 94538  
City Area Code 707  
Local Phone Number 774-7000  
Title of 12(b) Security Common Stock, $0.00001 par value per share  
Trading Symbol ENPH  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   131,207,018
Entity Central Index Key 0001463101  
Amendment Flag false  
Document Fiscal Year Focus 2025  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q1  
v3.25.1
CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Current assets:    
Cash and cash equivalents $ 350,077 $ 369,110
Restricted cash 65,013 95,006
Marketable securities 1,116,780 1,253,480
Accounts receivable, net of allowances of $7,929 and $7,788 at March 31, 2025 and December 31, 2024, respectively 225,625 223,749
Inventory 144,025 165,004
Prepaid expenses and other current assets 295,725 220,735
Total current assets 2,197,245 2,327,084
Property and equipment, net 142,219 147,514
Intangible assets, net 37,408 42,398
Goodwill 212,359 211,571
Other assets 211,447 205,542
Deferred tax assets, net 305,408 315,567
Total assets 3,106,086 3,249,676
Current liabilities:    
Accounts payable 115,374 90,032
Accrued liabilities 212,169 196,887
Deferred revenues, current 167,771 237,225
Warranty obligations, current 33,298 34,656
Debt, current 630,677 101,291
Total current liabilities 1,159,289 660,091
Long-term liabilities:    
Deferred revenues, non-current 333,704 341,982
Warranty obligations, non-current 170,149 158,233
Other liabilities 61,032 55,265
Debt, non-current 571,214 1,201,089
Total liabilities 2,295,388 2,416,660
Commitments and contingencies (Note 10)
Stockholders’ equity:    
Common stock, $0.00001 par value, 300,000 shares authorized; and 131,186 shares and 132,448 shares issued and outstanding at March 31, 2025 and December 31, 2024, respectively 1 1
Additional paid-in capital 1,128,163 1,084,573
Accumulated deficit (315,856) (245,206)
Accumulated other comprehensive loss (1,610) (6,352)
Total stockholders’ equity 810,698 833,016
Total liabilities and stockholders’ equity $ 3,106,086 $ 3,249,676
v3.25.1
CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
shares in Thousands, $ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Statement of Financial Position [Abstract]    
Accounts receivable, allowance $ 7,929 $ 7,788
Common stock, par value (in usd per share) $ 0.00001 $ 0.00001
Common stock, shares authorized (in shares) 300,000 300,000
Common stock, shares issued (in shares) 131,186 132,448
Common stock, shares outstanding (in shares) 131,186 132,448
v3.25.1
CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Income Statement [Abstract]    
Net revenues $ 356,084 $ 263,339
Cost of revenues 187,843 147,831
Gross profit 168,241 115,508
Operating expenses:    
Research and development 50,174 54,211
Sales and marketing 48,948 53,307
General and administrative 34,035 35,182
Restructuring and asset impairment charges 3,162 1,907
Total operating expenses 136,319 144,607
Income (loss) from operations 31,922 (29,099)
Other income, net    
Interest income 17,032 19,709
Interest expense (2,047) (2,196)
Other income (expense), net (14) 87
Total other income, net 14,971 17,600
Income (loss) before income taxes 46,893 (11,499)
Income tax provision (17,163) (4,598)
Net income (loss) $ 29,730 $ (16,097)
Net income (loss) per share    
Basic (in usd per share) $ 0.23 $ (0.12)
Diluted (in usd per share) $ 0.22 $ (0.12)
Shares used in per share calculation:    
Basic (in shares) 131,869 135,891
Diluted (in shares) 136,208 135,891
v3.25.1
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Statement of Comprehensive Income [Abstract]    
Net income (loss) $ 29,730 $ (16,097)
Other comprehensive income (loss):    
Foreign currency translation adjustments 3,019 (2,974)
Marketable securities    
Change in net unrealized gain (loss), net of income tax benefit (provision) of $339 and $(604) for the three months ended March 31, 2025 and, 2024, respectively. 1,723 (1,811)
Comprehensive income (loss) $ 34,472 $ (20,882)
v3.25.1
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Statement of Comprehensive Income [Abstract]    
Marketable securities, income tax benefit (provision) $ 339 $ (604)
v3.25.1
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($)
$ in Thousands
Total
Common stock and paid-in capital
Accumulated Earnings (Deficit)
Accumulated Other Comprehensive Loss
Balance, beginning of period at Dec. 31, 2023   $ 939,339 $ 46,273 $ (1,988)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Issuance of common stock from exercise of equity awards and employee stock purchase plan   1,186    
Payment of withholding taxes related to net share settlement of equity awards   (60,042)    
Stock-based compensation   60,833    
Repurchase of common stock     (41,996)  
Net income (loss) $ (16,097)   (16,097)  
Excise tax on net stock repurchases     0  
Foreign currency translation adjustment (2,974)     (2,974)
Change in net unrealized (loss) gain on marketable securities, net of tax       (1,811)
Balance, end of the period at Mar. 31, 2024 922,723 941,316 (11,820) (6,773)
Balance, beginning of period at Dec. 31, 2024 833,016 1,084,574 (245,206) (6,352)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Issuance of common stock from exercise of equity awards and employee stock purchase plan   67    
Payment of withholding taxes related to net share settlement of equity awards   (12,110)    
Stock-based compensation   55,633    
Repurchase of common stock     (99,964)  
Net income (loss) 29,730   29,730  
Excise tax on net stock repurchases     (416)  
Foreign currency translation adjustment 3,019     3,019
Change in net unrealized (loss) gain on marketable securities, net of tax       1,723
Balance, end of the period at Mar. 31, 2025 $ 810,698 $ 1,128,164 $ (315,856) $ (1,610)
v3.25.1
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Cash flows from operating activities:    
Net income (loss) $ 29,730 $ (16,097)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Depreciation and amortization 19,915 20,137
Net amortization of premium on marketable securities 3,512 2,825
Provision (benefit) for credit losses 62 (130)
Asset impairment 27 332
Non-cash interest expense 1,679 2,132
Net gain from change in fair value of debt securities (323) (942)
Stock-based compensation 55,633 60,833
Deferred income taxes 8,560 (8,292)
Changes in operating assets and liabilities:    
Accounts receivable 1,760 77,359
Inventory 20,979 5,702
Prepaid expenses and other assets (75,553) (10,897)
Accounts payable, accrued and other liabilities 54,232 (66,284)
Warranty obligations 10,558 (11,923)
Deferred revenues (82,357) (5,554)
Net cash provided by operating activities 48,414 49,201
Cash flows from investing activities:    
Purchases of property and equipment (14,608) (7,371)
Investment in tax equity fund (6,904) 0
Purchases of marketable securities (200,826) (472,268)
Maturities and sale of marketable securities 335,398 497,373
Net cash provided by investing activities 113,060 17,734
Cash flows from financing activities:    
Principal payments and financing fees on debt (102,168) (2)
Proceeds from issuance of common stock under employee equity plans 67 1,186
Payment of withholding taxes related to net share settlement of equity awards (12,110) (60,042)
Repurchase of common stock (99,964) (41,996)
Net cash used in financing activities (214,175) (100,854)
Effect of exchange rate changes on cash, cash equivalents and restricted cash 3,675 (1,177)
Net decrease in cash, cash equivalents and restricted cash (49,026) (35,096)
Cash, cash equivalents and restricted cash—Beginning of period 464,116 288,748
Cash, cash equivalents and restricted cash—End of period 415,090 253,652
Supplemental disclosures of non-cash investing activities:    
Purchases of property and equipment through tenant improvement allowance 855 0
Purchases of property and equipment included in accounts payable $ 4,207 $ 7,898
v3.25.1
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION
3 Months Ended
Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION
Description of Business
Enphase Energy, Inc. (the “Company”) is a global energy technology company. The Company delivers smart, easy-to-use solutions that manage solar generation, storage and communication on one platform. The Company’s intelligent microinverters work with virtually every solar panel made, and when paired with the Company’s smart technology, results in one of the industry’s best-performing clean energy systems.
Basis of Presentation and Consolidation
The accompanying condensed consolidated financial statements are presented in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”). The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
Unaudited Interim Financial Information
These accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial reporting. In the opinion of management, these unaudited condensed consolidated financial statements reflect all adjustments, consisting of normal recurring items, considered necessary to present fairly the Company’s financial condition, results of operations, comprehensive income (loss), stockholders’ equity and cash flows for the interim periods indicated. The results of operations for the three months ended March 31, 2025 are not necessarily indicative of the operating results for the full year.
Use of Estimates
The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Significant estimates and assumptions reflected in the financial statements include revenue recognition, allowance for credit losses, stock-based compensation, deferred compensation arrangements, income tax provision, inventory valuation, government grants, accrued warranty obligations, fair value of investments, convertible notes, fair value of acquired intangible assets and goodwill, useful lives of acquired intangible assets and property and equipment, incremental borrowing rate for right-of-use assets and lease liability. These estimates are based on information available as of the date of the financial statements; therefore, actual results could differ materially from those estimates due to risks and uncertainties.
The year-end condensed consolidated balance sheet data was derived from audited financial statements but does not include all disclosures required by U.S. GAAP. The Company filed audited consolidated financial statements, which included all information and notes necessary for such a complete presentation in conjunction with its Annual Report on Form 10-K for the fiscal year ended December 31, 2024 filed with the SEC on February 10, 2025 (the “Form 10‑K”).
Summary of Significant Accounting Policies
There have been no changes to the Company’s significant accounting policies as described in Note 2, “Summary of Significant Accounting Policies” of the notes to consolidated financial statements included in Part II, Item 8 of the Form 10-K.
Recently Adopted Accounting Pronouncements
Not Yet Adopted
In December 2023, the Financial Accounting Standard Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” (“ASU 2023-09”). ASU 2023-09 requires that an entity disclose specific categories in the effective tax rate reconciliation as well as provide additional information for reconciling items that meet a quantitative threshold, certain disclosures of state versus
federal income tax expenses and taxes paid. ASU 2023-09 was effective for fiscal years beginning after December 15, 2024 and interim periods for fiscal years beginning after December 15, 2025. The Company plans to adopt ASU 2023-09 in its annual report on Form 10-K for the year ending December 31, 2025. As ASU 2023-09 affects only disclosures, the adoption of ASU 2023-09 is not expected to have a significant impact on its consolidated financial statements.
Recently Issued Accounting Pronouncements
Not Yet Effective
In November 2024, the FASB issued ASU 2024-03, “Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures” (“ASU 2024-03”), which requires additional disclosure of certain costs and expenses within the notes to the financial statements. ASU 2024-03 will be effective for fiscal years beginning after December 15, 2026, and interim periods beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating the impact from ASU 2024-03 on its consolidated financial statements disclosures.
v3.25.1
REVENUE RECOGNITION
3 Months Ended
Mar. 31, 2025
Revenue from Contract with Customer [Abstract]  
REVENUE RECOGNITION REVENUE RECOGNITION
Disaggregated Revenue
The Company has one major business activity, which is the design, manufacture and sale of solutions for the solar photovoltaic (“PV”) industry. Disaggregated revenue by primary geographical market and timing of revenue recognition for the Company’s single product line are as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Primary geographical markets:
United States$263,238 $149,974 
International
92,846 113,365 
Total$356,084 $263,339 
Timing of revenue recognition:
Products delivered at a point in time$322,886 $233,145 
Products and services delivered over time33,198 30,194 
Total$356,084 $263,339 
Contract Balances
Accounts receivable, and contract assets and contract liabilities from contracts with customers, are as follows:
March 31,
2025
December 31,
2024
(In thousands)
Accounts receivable$225,625 $223,749 
Short-term contract assets (Prepaid expenses and other current assets)42,098 42,001 
Long-term contract assets (Other assets)108,403 110,954 
Short-term contract liabilities (Deferred revenues, current)167,771 237,225 
Long-term contract liabilities (Deferred revenues, non-current)333,704 341,982 
The Company receives payments from customers based upon contractual payment terms. Accounts receivable are recorded in an amount that reflects the consideration that is expected to be received in exchange for those goods or services when the right to consideration becomes unconditional.
Contract assets include deferred product costs and commissions associated with the deferred revenue and will be amortized along with the associated revenue. The Company had no asset impairment charges related to contract assets for the three months ended March 31, 2025.
Significant changes in the balances of contract assets (prepaid expenses and other current assets) as of March 31, 2025 are as follows (in thousands):
Contract Assets
Contract Assets, beginning of period$152,955 
Amount recognized(9,879)
Increased due to billings7,425 
Contract Assets, end of period$150,501 
Contract liabilities are recorded as deferred revenue on the accompanying condensed consolidated balance sheets and include payments received in advance of performance obligations under the contract and are realized when the associated revenue is recognized under the contract.
Significant changes in contract liabilities (deferred revenues) as of March 31, 2025 are as follows (in thousands):
Contract Liabilities
Contract Liabilities, beginning of period$579,207 
Revenue recognized(103,106)
Increased due to billings25,374 
Contract Liabilities, end of period$501,475 
Remaining Performance Obligations
Estimated revenue expected to be recognized in future periods related to performance obligations that are unsatisfied or partially unsatisfied at the end of the reporting period are as follows:
March 31,
2025
(In thousands)
Fiscal year:
2025 (remaining nine months)$138,025 
2026113,805 
202793,659 
202872,391 
202947,931 
Thereafter35,664 
Total$501,475 
v3.25.1
OTHER FINANCIAL INFORMATION
3 Months Ended
Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
OTHER FINANCIAL INFORMATION OTHER FINANCIAL INFORMATION
Inventory
Inventory consists of the following:
March 31,
2025
December 31,
2024
(In thousands)
Raw materials$40,389 $38,740 
Finished goods103,636 126,264 
Total inventory$144,025 $165,004 
Accrued Liabilities
Accrued liabilities consist of the following:
March 31,
2025
December 31,
2024
(In thousands)
Customer rebates and sales incentives$88,084 $96,324 
Liability due to supply agreements48,756 42,745 
Freight8,549 7,497 
Salaries, commissions, incentive compensation and benefits18,235 11,956 
Income tax payable11,497 3,540 
Operating lease liabilities, current6,154 5,815 
VAT payable3,302 1,472 
Liabilities related to restructuring accruals3,250 3,262 
Other24,342 24,276 
Total accrued liabilities$212,169 $196,887 
v3.25.1
GOODWILL AND INTANGIBLE ASSETS
3 Months Ended
Mar. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
GOODWILL AND INTANGIBLE ASSETS GOODWILL AND INTANGIBLE ASSETS
The Company’s goodwill as of March 31, 2025 and December 31, 2024 was as follows:
GoodwillMarch 31,
2025
December 31,
2024
(In thousands)
Goodwill, beginning of period$211,571 $214,562 
Currency translation adjustment788 (2,991)
Goodwill, end of period$212,359 $211,571 
The Company’s purchased intangible assets as of March 31, 2025 and December 31, 2024 were as follows:
March 31, 2025December 31, 2024
GrossAccumulated AmortizationNetGrossAccumulated AmortizationImpairmentNet
(In thousands)
Intangible assets:
Indefinite-lived intangibles$286 $— $286 $286 $— $— $286 
Intangible assets with finite lives:
 Developed technology47,683 (37,462)10,221 51,054 (35,903)(3,351)11,800 
 Customer relationships51,114 (37,315)13,799 51,306 (35,804)(177)15,325 
 Trade names37,700 (24,598)13,102 37,700 (22,713)— 14,987 
Total purchased intangible assets$136,783 $(99,375)$37,408 $140,346 $(94,420)$(3,528)$42,398 
During the three months ended March 31, 2025, intangible assets decreased by less than $0.1 million due to the impact of foreign currency translation.
Amortization expense related to finite-lived intangible assets were as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Developed technology$1,593 $2,467 
Customer relationships
1,535 1,576 
Trade-names1,885 1,885 
Total amortization expense
$5,013 $5,928 
Amortization of developed technology is recorded to cost of revenues, amortization of customer relationships and trade-names are recorded to sales and marketing expense, and amortization of certain customer relationships is recorded as a reduction to revenue.
The expected future amortization expense of intangible assets as of March 31, 2025 is presented below:
March 31,
2025
(In thousands)
Fiscal year:
2025 (remaining nine months)$15,028 
202617,843 
20274,251 
Total$37,122 
v3.25.1
CASH EQUIVALENTS, RESTRICTED CASH AND MARKETABLE SECURITIES
3 Months Ended
Mar. 31, 2025
Cash and Cash Equivalents [Abstract]  
CASH EQUIVALENTS, RESTRICTED CASH AND MARKETABLE SECURITIES CASH EQUIVALENTS, RESTRICTED CASH AND MARKETABLE SECURITIES
The cash equivalents, restricted cash and marketable securities consist of the following:
As of March 31, 2025
Amortized CostGross Unrealized GainsGross Unrealized LossesFair ValueCash EquivalentsMarketable SecuritiesRestricted Cash
(In thousands)
Money market funds$175,480 $— $— $175,480 $175,480 $— $— 
Certificates of deposit93,218 15 (1)93,232 — 28,232 65,000 
Commercial paper21,433 14 (4)21,443 — 21,443 — 
Corporate notes and bonds398,540 1,302 (567)399,275 — 399,275 — 
U.S. Treasuries88,565 (41)88,525 — 88,525 — 
U.S. Government agency securities578,536 1,235 (466)579,305 — 579,305 — 
Total$1,355,772 $2,567 $(1,079)$1,357,260 $175,480 $1,116,780 $65,000 
As of December 31, 2024
Amortized CostGross Unrealized GainsGross Unrealized LossesFair ValueCash EquivalentsMarketable SecuritiesRestricted Cash
(In thousands)
Money market funds$191,410 $— $— $191,410 $191,410 $— $— 
Certificates of deposit125,087 13 (8)125,092 — 30,092 95,000 
Commercial paper30,681 40 (8)30,713 — 30,713 — 
Corporate notes and bonds449,612 1,115 (1,157)449,570 — 449,570 — 
U.S. Treasuries111,606 42 (36)111,612 — 111,612 — 
U.S. Government agency securities631,389 1,241 (1,137)631,493 — 631,493 — 
Total$1,539,785 $2,451 $(2,346)$1,539,890 $191,410 $1,253,480 $95,000 
The following table summarizes the contractual maturities of the Company’s cash equivalents, restricted cash and marketable securities as of March 31, 2025:
Amortized CostFair Value
(In thousands)
Due within one year$877,661 $878,380 
Due within one to three years478,111 478,880 
Total$1,355,772 $1,357,260 
All available-for-sale securities have been classified as current, based on management's intent and ability to use the funds in current operations.
v3.25.1
WARRANTY OBLIGATIONS
3 Months Ended
Mar. 31, 2025
Product Warranties Disclosures [Abstract]  
WARRANTY OBLIGATIONS WARRANTY OBLIGATIONS
The Company’s warranty obligation activities were as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Warranty obligations, beginning of period$192,889 $189,087 
Accruals for warranties issued during period7,309 6,098 
Expense (benefit) from changes in estimates7,721 (12,361)
Settlements(6,582)(6,893)
Increase due to accretion expense3,060 2,905 
Other(950)(1,672)
Warranty obligations, end of period203,447 177,164 
Less: warranty obligations, current(33,298)(30,868)
Warranty obligations, non-current$170,149 $146,296 
Changes in Estimates
In the three months ended March 31, 2025, the Company recorded $7.7 million in warranty expense from changes in estimates, of which $5.9 million related to estimated additional tariff costs to be incurred on product replacement costs and $1.8 million related to continuing analysis of field performance data and diagnostic root-cause failure analysis primarily for prior generation products.
In the three months ended March 31, 2024, the Company recorded $12.4 million in warranty benefit from changes in estimates, of which $9.3 million related to a decrease in product replacement costs for Enphase IQ® Battery storage systems and $3.1 million related to continuing analysis of field performance data and diagnostic root-cause failure analysis for Enphase IQ Battery storage systems.
v3.25.1
FAIR VALUE MEASUREMENTS
3 Months Ended
Mar. 31, 2025
Fair Value Disclosures [Abstract]  
FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS
The accounting guidance defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and considers assumptions that market participants would use when pricing the asset or liability, such as inherent risk, transfer restrictions, and risk of nonperformance.
The fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. An asset’s or liability’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Three levels of inputs may be used to measure fair value:
Level 1 - Valuations based on quoted prices in active markets for identical assets or liabilities that the Company is able to access. Since valuations are based on quoted prices that are readily and regularly available in an active market, valuation of such assets or liabilities do not entail a significant degree of judgment.
Level 2 - Valuations based on one or more quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly.
Level 3 - Valuations based on inputs that are unobservable and significant to the overall fair value measurement.
The following table presents assets and liabilities measured at fair value on a recurring basis using the above input categories:
March 31, 2025December 31, 2024
(In thousands)
Level 1Level 2Level 3Level 1Level 2Level 3
Assets:
Cash equivalents, restricted cash and marketable securities:
Money market funds$175,480 $— $— $191,410 $— $— 
Certificates of deposit65,000 — — 95,000 — — 
Commercial paper— — — — — — 
Corporate notes and bonds— — — — — 
Marketable securities:
Certificates of deposit— 28,232 — — 30,092 — 
Commercial paper— 21,443 — — 30,713 — 
Corporate notes and bonds— 399,275 — — 449,570 — 
U.S. Treasuries— 88,525 — — 111,612 — 
U.S. Government agency securities— 579,305 — — 631,493 — 
Other assets:
Investments in debt securities— — 65,157 — — 64,834 
Investment in tax equity fund— — 5,190 — — — 
Total assets measured at fair value$240,480 $1,116,780 $70,347 $286,410 $1,253,480 $64,834 
Liabilities:
Warranty obligations:
Current$— $— $26,200 $— $— $27,173 
Non-current— — 153,853 — — 143,743 
Total warranty obligations measured at fair value— — 180,053 — — 170,916 
Total liabilities measured at fair value$— $— $180,053 $— $— $170,916 
Notes due 2028, Notes due 2026 and Notes due 2025
The Company carries the Notes due 2028 (as defined in Note 9, “Debt”) and Notes due 2026 (as defined in Note 9, “Debt”) at face value less unamortized debt issuance costs on its condensed consolidated balance sheets. As of March 31, 2025, the fair value of the Notes due 2028 and Notes due 2026 was $487.4 million and $601.3 million, respectively. The fair value as of March 31, 2025 was determined based on the closing trading price per $100 principal amount as of the last day of trading for the period. The Company considers the fair value of the Notes due 2028 and Notes due 2026 to be a Level 2 measurement as they are not actively traded.
Investments in debt securities
Investments in debt securities is recorded in “Other assets” on the accompanying condensed consolidated balance sheets as of March 31, 2025 and December 31, 2024. The changes in the balance in investments in debt securities during the period were as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Balance at beginning of period$64,834 $79,855 
Fair value adjustments included in other income, net323 942 
Balance at end of period$65,157 $80,797 
Investment in tax equity fund
In January 2025, the Company made an investment in a tax equity fund contributing $6.9 million. The Company has elected to report its investment at fair value, which is equal to the present value of the remaining future cash flows expected to be received from the investment. The investment is included in “Other assets” on the accompanying condensed consolidated balance sheet as of March 31, 2025.
As of March 31, 2025, the fair value of the investment was $5.2 million, representing the Company’s share of net assets in the tax equity fund. During the three months ended March 31, 2025, the Company recognized a deferred tax asset of $1.8 million related to the difference between the initial investment amount and the fair value. Additionally, the Company recognized a gain of $0.1 million in “Other income (expense), net” in the condensed consolidated statements of operations for the same period.
Fair Value Option for Warranty Obligations Related to Products Sold Since January 1, 2014
The Company estimates the fair value of warranty obligations by calculating the warranty obligations in the same manner as for sales prior to January 1, 2014 and applying an expected present value technique to that result. The expected present value technique, an income approach, converts future amounts into a single current discounted amount. In addition to the key estimates of return rates and replacement costs, the Company used certain Level 3 inputs, which are unobservable and significant to the overall fair value measurement. Such additional assumptions are based on the Company’s credit-adjusted risk-free rate (“discount rate”) and compensation comprised of a profit element and risk premium required of a market participant to assume the obligation.
The following table provides information regarding changes in nonfinancial liabilities related to the Company’s warranty obligations measured at fair value on a recurring basis using significant unobservable inputs designated as Level 3 for the periods indicated:
Three Months Ended
March 31,
20252024
(In thousands)
Balance at beginning of period$170,916 $161,793 
Accruals for warranties issued during period7,299 6,082 
Changes in estimates4,626 (12,018)
Settlements(4,898)(6,540)
Increase due to accretion expense3,060 2,905 
Other(950)(1,672)
Balance at end of period$180,053 $150,550 
Quantitative and Qualitative Information about Level 3 Fair Value Measurements
As of March 31, 2025 and December 31, 2024, the significant unobservable inputs used in the fair value measurement of the Company’s liabilities designated as Level 3 were as follows:
Percent Used
(Weighted Average)
Item Measured at Fair ValueValuation TechniqueDescription of Significant Unobservable InputMarch 31,
2025
December 31,
2024
Warranty obligations for products sold since January 1, 2014Discounted cash flowsProfit element and risk premium17.5%16.8%
Credit-adjusted risk-free rate7.2%7.2%
Sensitivity of Level 3 Inputs - Warranty Obligations
Each of the significant unobservable inputs is independent of the other. The profit element and risk premium are estimated based on the requirements of a third-party participant willing to assume the Company’s warranty obligations. The discount rate is determined by reference to the Company’s own credit standing at the fair value measurement date. Under the expected present value technique, increasing the profit element and risk premium input by 100 basis points would result in a $1.3 million increase to the liability. Decreasing the profit element and risk premium by 100 basis points would result in a $1.3 million reduction to the liability. Increasing the discount rate by 100 basis points would result in a $12.2 million decrease to the liability. Decreasing the discount rate by 100 basis points would result in a $13.7 million increase to the liability.
v3.25.1
RESTRUCTURING AND ASSET IMPAIRMENT CHARGES
3 Months Ended
Mar. 31, 2025
Restructuring and Related Activities [Abstract]  
RESTRUCTURING AND ASSET IMPAIRMENT CHARGES RESTRUCTURING AND ASSET IMPAIRMENT CHARGES
2024 Restructuring Plan
In the fourth quarter of 2024, the Company implemented a restructuring plan (the “2024 Restructuring Plan”) designed to better align its workforce and cost structure with the Company’s business needs, strategic priorities and ongoing commitment to profitable growth, while increasing operational efficiencies and reducing operating cost. The Company plans to complete its restructuring activities under the 2024 Restructuring Plan by June 30, 2025.
The following table presents the details of the Company’s restructuring and asset impairment charges under the 2024 Restructuring Plan for the three months ended March 31, 2025:
Three Months Ended
March 31,
2025
(In thousands)
Employee severance and benefits $3,371 
Contract termination charges(236)
Asset impairment27 
Total restructuring and asset impairment charges$3,162 
The following table provides information regarding changes in the Company’s accrued restructuring balances under the 2024 Restructuring Plan for the periods indicated:
Employee Severance and BenefitsContract Termination Charges Asset ImpairmentTotal
(In thousands)
Balance as of December 31, 2024$2,220 $766 $— $2,986 
Charges3,371 (236)27 3,162 
Cash payments and receipts, net(2,634)(1)— (2,635)
Non-cash settlement and other(509)— (27)(536)
Balance as of March 31, 2025$2,448 $529 $— $2,977 
2023 Restructuring Plan
In the fourth quarter of 2023, the Company implemented a restructuring plan (the “2023 Restructuring Plan”) designed to increase operational efficiencies and execution, reduce operating costs, and better align the Company’s workforce and cost structure with current market conditions, and the Company’s business needs, strategic priorities and ongoing commitment to profitable growth. The Company completed its restructuring activities under the 2023 Restructuring Plan in the fourth quarter of 2024 and substantially all of the remaining liabilities as of December 31, 2024, were settled during the three months ended March 31, 2025.
v3.25.1
DEBT
3 Months Ended
Mar. 31, 2025
Debt Disclosure [Abstract]  
DEBT DEBT
The following table provides information regarding the Company’s debt:
March 31,
2025
December 31,
2024
(In thousands)
Convertible notes
Notes due 2028$575,000 $575,000 
Less: unamortized debt issuance costs(3,786)(4,102)
Carrying amount of Notes due 2028 571,214 570,898 
Notes due 2026632,500 632,500 
Less: unamortized debt issuance costs(1,823)(2,309)
Carrying amount of Notes due 2026 630,677 630,191 
Notes due 2025— 102,168 
Less: unamortized debt discount— (803)
Less: unamortized debt issuance costs— (74)
Carrying amount of Notes due 2025— 101,291 
Total carrying amount of debt1,201,891 1,302,380 
Less: debt, current(630,677)(101,291)
Debt, non-current$571,214 $1,201,089 
The following table presents the total amount of interest cost recognized in the consolidated statement of operations relating to the Company’s notes:
Three Months Ended
March 31,
20252024
Notes due 2028Notes due 2026Notes due 2025Notes due 2028Notes due 2026Notes due 2025
(In thousands)
Contractual interest expense$— $— $43 $— $— $64 
Amortization of debt discount— — 803 — — 1,177 
Amortization of debt issuance costs316 485 75 326 503 126 
Total interest cost recognized$316 $485 $921 $326 $503 $1,367 
Convertible Senior Notes due 2028
On March 1, 2021, the Company issued $575.0 million aggregate principal amount of its 0.0% convertible senior notes due 2028 (the “Notes due 2028”). The Notes due 2028 will not bear regular interest, and the principal amount of the Notes due 2028 will not accrete. The Notes due 2028 are general unsecured obligations and are governed by an indenture between the Company and U.S. Bank National Association, as trustee. The Notes due 2028 will mature on March 1, 2028, unless earlier repurchased by the Company or converted at the option of the holders. The Company received approximately $566.4 million in net proceeds, after deducting the initial purchasers’ discount, from the issuance of the Notes due 2028.
The initial conversion rate for the Notes due 2028 is 3.5104 shares of common stock per $1,000 principal amount of the Notes due 2028 (which represents an initial conversion price of approximately $284.87 per share). Upon conversion, the Company will settle conversions of the Notes due 2028 through payment or delivery, as the case may be, of cash, shares of its common stock or a combination of cash and shares of its common stock, at the Company’s election.
The Company may redeem for cash all or any portion of the Notes due 2028, at the Company’s election, on or after September 6, 2024, if the last reported sale price of the Company’s common stock has been greater than or equal to 130% of the conversion price then in effect for the Notes due 2028 (i.e., $370.33, which is 130% of the current conversion price for the Notes due 2028) for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which the Company provides notice of redemption. The redemption price will equal 100% of the principal amount of the Notes due 2028 to be redeemed, plus accrued and unpaid special interest, if any to, but excluding, the relevant redemption date. No sinking fund is provided for the Notes due 2028.
The Notes due 2028 may be converted on any day prior to the close of business on the business day immediately preceding September 1, 2027, in multiples of $1,000 principal amount, at the option of the holder only under any of the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on June 30, 2021 (and only during such calendar quarter), if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price for the Notes due 2028 on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the “Measurement Period”) in which the “trading price” (as defined in the relevant indenture) per $1,000 principal amount of notes for each trading day of the Measurement Period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate for the Notes due 2028 on each such trading day; (3) if the Company calls any or all of the Notes due 2028 for redemption, at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date; or (4) upon the occurrence of specified corporate events. On and after September 1, 2027 until the close of business on the second scheduled trading day immediately preceding the maturity date of March 1, 2028, holders of the Notes due 2028 may convert their notes at any time, regardless of the foregoing circumstances. Upon the occurrence of a fundamental change (as defined in the relevant indenture), holders may require the Company to repurchase all or a portion of their Notes due 2028 for cash at a price equal to 100% of the principal amount of the notes to be repurchased plus any accrued and unpaid special interest, if any, to, but excluding, the fundamental change repurchase date.
As of March 31, 2025, the sales price of the Company’s common stock was not greater than or equal to $370.33 (130% of the notes conversion price) for at least 20 trading days (whether consecutive or not) during a period of 30 consecutive trading days preceding the quarter-ended March 31, 2025. As a result, the Notes due 2028 are not convertible at the holders’ option. Accordingly, the Company classified the net carrying amount of the Notes due 2028 of $571.2 million as Debt, non-current on the condensed consolidated balance sheet as of March 31, 2025. As of March 31, 2025, the unamortized deferred issuance cost for the Notes due 2028 was $3.8 million on the condensed consolidated balance sheet.
Notes due 2028 Hedge and Warrant Transactions
In connection with the offering of the Notes due 2028, the Company entered into privately-negotiated convertible note hedge transactions (“Notes due 2028 Hedge”) pursuant to which the Company has the option to purchase a total of approximately 2.0 million shares of its common stock (subject to anti-dilution adjustments), which is the same number of shares initially issuable upon conversion of the Notes due 2028, at a price of $284.87 per share. The total cost of the convertible note hedge transactions was approximately $161.6 million. The convertible note hedge transactions are expected generally to reduce potential dilution to the Company’s common stock upon any conversion of the Notes due 2028 and/or offset any cash payments the Company is required to make in excess of the principal amount of converted notes, as the case may be.
Additionally, the Company separately entered into privately-negotiated warrant transactions (the “2028 Warrants”) whereby the Company sold warrants to acquire approximately 2.0 million shares of the Company’s common stock (subject to anti-dilution adjustments) at an initial strike price of $397.91 per share. The Company
received aggregate proceeds of approximately $123.4 million from the sale of the 2028 Warrants. If the market value per share of the Company’s common stock, as measured under the 2028 Warrants, exceeds the strike price of the 2028 Warrants, the 2028 Warrants will have a dilutive effect on the Company’s earnings per share, unless the Company elects, subject to certain conditions, to settle the 2028 Warrants in cash. Taken together, the purchase of the Notes due 2028 Hedge and the sale of the 2028 Warrants are intended to reduce potential dilution from the conversion of the Notes due 2028 and to effectively increase the overall conversion price from $284.87 to $397.91 per share. The 2028 Warrants are only exercisable on the applicable expiration dates in accordance with the Notes due 2028 Hedge. Subject to the other terms of the 2028 Warrants, the first expiration date applicable to the Notes due 2028 Hedge is June 1, 2028, and the final expiration date applicable to the Notes due 2028 Hedge is July 27, 2028.
Given that the transactions meet certain accounting criteria, the Notes due 2028 Hedge and the 2028 Warrants transactions were recorded in stockholders’ equity, and they were not accounted for as derivatives and are not remeasured each reporting period.
Convertible Senior Notes due 2026
On March 1, 2021, the Company issued $575.0 million aggregate principal amount of 0.0% convertible senior notes due 2026 (the “Notes due 2026”). In addition, on March 12, 2021, the Company issued an additional $57.5 million aggregate principal amount of the Notes due 2026 pursuant to the initial purchasers’ full exercise of the over-allotment option for additional Notes due 2026. The Notes due 2026 will not bear regular interest, and the principal amount of the Notes due 2026 will not accrete. The Notes due 2026 are general unsecured obligations and are governed by an indenture between the Company and U.S. Bank National Association, as trustee. The Notes due 2026 will mature on March 1, 2026, unless repurchased earlier by the Company or converted at the option of the holders. The Company received approximately $623.0 million in net proceeds, after deducting the initial purchasers’ discount, from the issuance of the Notes due 2026.
The initial conversion rate for the Notes due 2026 is 3.2523 shares of common stock per $1,000 principal amount of the Notes due 2026 (which represents an initial conversion price of approximately $307.47 per share). Upon conversion, the Company will settle conversions of Notes due 2026 through payment or delivery, as the case may be, of cash, shares of its common stock or a combination of cash and shares of its common stock, at the Company’s election.
The Company may redeem for cash all or any portion of the Notes due 2026, at the Company’s election, on or after September 6, 2023, if the last reported sale price of the Company’s common stock has been greater than or equal to 130% of the conversion price then in effect for the Notes due 2026 (i.e., $399.71, which is 130% of the current conversion price for the Notes due 2026) for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which the Company provides notice of redemption. The redemption price will equal 100% of the principal amount of the Notes due 2026 to be redeemed, plus accrued and unpaid special interest, if any, to, but excluding, the relevant redemption date for the Notes due 2026. The redemption price will be increased as described in the relevant indentures by a number of additional shares of the Company in connection with such optional redemption by the Company. No sinking fund is provided for the Notes due 2026.
The Notes due 2026 may be converted on any day prior to the close of business on the business day immediately preceding September 1, 2025, in multiples of $1,000 principal amount, at the option of the holder only under any of the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on June 30, 2021 (and only during such calendar quarter), if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price of the Notes due 2026 on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the “measurement period”) in which the “trading price” (as defined in the relevant indenture) per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate for Notes due 2026 on each such trading day; (3) if the Company calls any or all of the Notes due 2026 for redemption, at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date; or (4) upon the occurrence of specified corporate events. On and after
September 1, 2025 until the close of business on the second scheduled trading day immediately preceding the maturity date of March 1, 2026, holders of the Notes due 2026 may convert their notes at any time, regardless of the foregoing circumstances. Upon the occurrence of a fundamental change (as defined in the relevant indenture), holders may require the Company to repurchase all or a portion of their Notes due 2026 for cash at a price equal to 100% of the principal amount of the notes to be repurchased plus any accrued and unpaid special interest, if any, to, but excluding, the fundamental change repurchase date.
As of March 31, 2025, the sale price of the Company’s common stock was not greater than or equal to $399.71 (130% of the notes conversion price) for at least 20 trading days (whether consecutive or not) during a period of 30 consecutive trading days preceding the quarter-ended March 31, 2025. As a result, the Notes due 2026 are not convertible at the holders’ option. Further, as the Notes due 2026 mature in less than a year, accordingly, the Company classified the net carrying amount of the Notes due 2026 of $630.7 million as Debt, current on the condensed consolidated balance sheet as of March 31, 2025. As of March 31, 2025, the unamortized deferred issuance cost for the Notes due 2026 was $1.8 million on the condensed consolidated balance sheet.
Notes due 2026 Hedge and Warrant Transactions
In connection with the offering of the Notes due 2026 (including in connection with the issuance of additional Notes due 2026 upon the initial purchasers’ exercise of their over-allotment option), the Company entered into privately-negotiated convertible note hedge transactions (the “Notes due 2026 Hedge”) pursuant to which the Company has the option to purchase a total of approximately 2.1 million shares of its common stock (subject to anti-dilution adjustments), which is the same number of shares initially issuable upon conversion of the Notes due 2026, at a price of $307.47 per share, which is the initial conversion price of the Notes due 2026. The total cost of the Notes due 2026 Hedge was approximately $124.6 million. The Notes due 2026 Hedge are expected generally to reduce potential dilution to the Company’s common stock upon any conversion of the Notes due 2026 and/or offset any cash payments the Company is required to make in excess of the principal amount of converted notes, as the case may be.
Additionally, the Company separately entered into privately-negotiated warrant transactions, including in connection with the issuance of additional Notes due 2026 upon the initial purchasers’ exercise of their over-allotment option (the “2026 Warrants”), whereby the Company sold warrants to acquire approximately 2.1 million shares of the Company’s common stock (subject to anti-dilution adjustments) at an initial strike price of $397.91 per share. The Company received aggregate proceeds of approximately $97.4 million from the sale of the 2026 Warrants. If the market value per share of the Company’s common stock, as measured under the 2026 Warrants, exceeds the strike price of the 2026 Warrants, the 2026 Warrants will have a dilutive effect on the Company’s earnings per share, unless the Company elects, subject to certain conditions, to settle the 2026 Warrants in cash. Taken together, the purchase of the Notes due 2026 Hedge and the sale of the 2026 Warrants are intended to reduce potential dilution from the conversion of the Notes due 2026 and to effectively increase the overall conversion price from $307.47 to $397.91 per share. The 2026 Warrants are only exercisable on the applicable expiration dates in accordance with the 2026 Warrants. Subject to the other terms of the 2026 Warrants, the first expiration date applicable to the Warrants is June 1, 2026, and the final expiration date applicable to the 2026 Warrants is July 27, 2026.
Given that the transactions meet certain accounting criteria, the Notes due 2026 Hedge and the 2026 Warrants transactions were recorded in stockholders’ equity, and they were not accounted for as derivatives and are not remeasured each reporting period.
Convertible Senior Notes due 2025
During the three months ended March 31, 2025, the Company settled all of its outstanding 0.25% convertible senior notes due 2025 (the “Notes due 2025”) on March 1, 2025 (the “maturity date”). As part of the settlement, the Company paid $102.2 million in cash towards principal amount of the Notes due 2025 and no shares were issued in connection with the settlement as the conversion value was less than the principal amount of the Notes due 2025. Following the settlement, there were no Notes due 2025 outstanding as of March 31, 2025.
Notes due 2025 Hedge and Warrant Transactions
In connection with the offering of the Notes due 2025, the Company entered into privately-negotiated convertible note hedge transactions (the “Notes due 2025 Hedge”) to reduce potential dilution to the Company’s common stock upon any conversion of the Notes due 2025 and/or offset any cash payments the Company is required to make in excess of the principal amount of converted notes, as the case may be. The Notes due 2025 Hedge expired on March 1, 2025, upon maturity of Notes due 2025 as the strike price was higher than the market price.
Additionally, the Company separately entered into privately-negotiated warrant transactions in connection with the offering of the Notes due 2025 whereby the Company sold the 2025 Warrants to acquire approximately 3.9 million shares of the Company’s common stock (subject to anti-dilution adjustments) at an initial strike price of $106.94 per share. If the market value per share of the Company’s common stock, as measured under the 2025 Warrants, exceeds the $106.94 strike price of the 2025 Warrants, the 2025 Warrants will have a dilutive effect on the Company’s earnings per share, unless the Company elects, subject to certain conditions, to settle the 2025 Warrants in cash. The 2025 Warrants are only exercisable on the applicable expiration dates in accordance with the agreements relating to each of the 2025 Warrants. Subject to the other terms of the 2025 Warrants, the first expiration date applicable to the 2025 Warrants is June 1, 2025, and the final expiration date applicable to the 2025 Warrants is September 23, 2025.
As of March 31, 2025, warrants exercisable for approximately 1.3 million shares of common stock remained outstanding under the 2025 Warrants.
Given that the transactions meet certain accounting criteria, the 2025 Warrants transactions are recorded in stockholders’ equity, and are not accounted for as derivatives and are not remeasured each reporting period.
v3.25.1
COMMITMENTS AND CONTINGENCIES
3 Months Ended
Mar. 31, 2025
Commitments and Contingencies Disclosure [Abstract]  
COMMITMENTS AND CONTINGENCIES COMMITMENTS AND CONTINGENCIES
Operating Leases
The Company leases office facilities under noncancellable operating leases that expire on various dates through 2034, some of which may include options to extend the leases for up to 12 years.
The components of lease expense are presented as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Operating lease costs$2,817 $2,647 
The components of right of use assets and lease liabilities are presented as follows:
March 31,
2025
December 31,
2024
(In thousands, except years and percentage data)
Operating Leases:
Operating lease, right of use asset, net (Other assets)$27,949 $24,617 
Operating lease liabilities, current (Accrued liabilities)
$6,154 $5,815 
Operating lease liabilities, non-current (Other liabilities)26,560 23,044 
Total operating lease liabilities
$32,714 $28,859 
Supplemental lease information:
Weighted average remaining lease term
6.4 years5.9 years
Weighted average discount rate
6.6%6.7%
Supplemental cash flow and other information related to operating leases were as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases$2,131 $1,905 
Non-cash investing activities:
Lease liabilities arising from obtaining right-of-use assets
$7,260 $1,695 
Undiscounted cash flows of operating lease liabilities as of March 31, 2025 were as follows:
Lease Amounts
(In thousands)
Year:
2025 (remaining nine months)$6,125 
20267,768 
20275,408 
20284,432 
20294,378 
Thereafter12,567 
Total lease payments
40,678 
Less: imputed lease interest
(7,964)
Total lease liabilities
$32,714 
Purchase Obligations
The Company has contractual obligations related to component inventory that its contract manufacturers procure on its behalf in accordance with its production forecast as well as other inventory related purchase commitments. As of March 31, 2025, these purchase obligations totaled approximately $142.3 million
Litigation
The Company is subject to various legal proceedings and claims that have arisen in the ordinary course of business and that have not been fully resolved. An accrual for a loss contingency or loss recovery is recognized when it is probable and the amount of loss or recovery can be reasonably estimated. The outcome of litigation is inherently uncertain. If one or more legal matters were resolved against the Company in a reporting period for amounts above management’s expectations, the Company’s business, results of operations, financial position and cash flows for that reporting period could be materially adversely affected. As of March 31, 2025 and 2024, in the opinion of management, there was not at least a reasonable possibility the Company may have incurred a material loss, or a material loss greater than a recorded accrual, concerning loss contingencies for asserted legal and other claims.
v3.25.1
STOCKHOLDERS' EQUITY
3 Months Ended
Mar. 31, 2025
Equity [Abstract]  
STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITYIn July 2023, the board of directors authorized a share repurchase program (the “2023 Repurchase Program”) pursuant to which the Company was authorized to repurchase up to $1.0 billion of the Company’s common stock. The Company may repurchase shares of common stock from time to time through solicited or unsolicited transactions in the open market, in privately negotiated transactions or pursuant to a Rule 10b5-1 plan. During the three months ended March 31, 2025 and 2024, the Company repurchased and subsequently retired 1,594,105 and 332,735 shares, respectively, of common stock from the open market at an average cost of $62.71 and $126.21 per share, respectively, for a total of $100.0 million and $42.0 million, respectively. As of March 31, 2025, $298.7 million remains available for repurchase of shares under the 2023 Repurchase Program.
v3.25.1
STOCK-BASED COMPENSATION
3 Months Ended
Mar. 31, 2025
Share-Based Payment Arrangement [Abstract]  
STOCK-BASED COMPENSATION STOCK-BASED COMPENSATION
Stock-based Compensation Expense
Stock-based compensation expense for all stock-based awards, which includes shares purchased under the Company’s employee stock purchase plan (“ESPP”), restricted stock units (“RSUs”) and performance stock units (“PSUs”), expected to vest is measured at fair value on the date of grant and recognized ratably over the requisite service period.
The following table summarizes the components of total stock-based compensation expense included in the condensed consolidated statements of operations for the periods presented:
Three Months Ended
March 31,
20252024
(In thousands)
Cost of revenues$4,239 $4,182 
Research and development21,647 24,550 
Sales and marketing16,396 18,178 
General and administrative12,842 13,923 
Restructuring509 — 
Total$55,633 $60,833 
The following table summarizes the various types of stock-based compensation expense for the periods presented:
Three Months Ended
March 31,
20252024
(In thousands)
RSUs and PSUs$54,176 $58,787 
ESPP1,457 2,046 
Total$55,633 $60,833 
As of March 31, 2025, there was approximately $376.4 million of total unrecognized stock-based compensation expense related to unvested equity awards, which are expected to be recognized over a weighted-average period of 2.2 years.
Equity Awards Activity
Stock Options
No stock options were granted during the three months ended March 31, 2025 and 2024. Stock option activity during the period and stock options outstanding as of March 31, 2025 were immaterial
Restricted Stock Units
The following table summarizes RSU activity:
Number of
Shares
Outstanding
Weighted-
Average
Fair Value
per Share at
Grant Date
Weighted-
Average
Remaining
Contractual
Term
Aggregate
Intrinsic
Value
(1)
(In thousands)(Years)(In thousands)
Outstanding at December 31, 20242,283 $139.27 
Granted615 65.27 
Vested(357)153.03 $21,716 
Canceled(158)140.43 
Outstanding at March 31, 20252,383 $118.04 1.5$147,824 
Expected to vest at March 31, 20252,374 $117.79 1.5$147,334 
(1)    The intrinsic value of RSUs vested is based upon the value of the Company’s stock when vested. The intrinsic value of RSUs outstanding and expected to vest as of March 31, 2025 is based on the closing price of the last trading day during the period ended March 31, 2025. The Company’s stock fair value used in this computation was $62.05 per share.
Performance Stock Units
The following summarizes PSU activity:
Number of
Shares
Outstanding
Weighted-
Average
Fair Value
per Share at
Grant Date
Weighted-
Average
Remaining
Contractual
Term
Aggregate
Intrinsic
Value
(1)
(In thousands)(Years)(In thousands)
Outstanding at December 31, 2024899 $154.67 
Granted1,128 77.71 
Vested(175)110.20 $10,017 
Canceled(197)118.43 
Outstanding at March 31, 20251,655 $111.23 1.8$102,672 
Expected to vest at March 31, 20251,655 $111.23 1.8$102,672 
(1)    The intrinsic value of PSUs vested is based upon the value of the Company’s stock when vested. The intrinsic value of PSUs outstanding and expected to vest as of March 31, 2025 is based on the closing price of the last trading day during the period ended March 31, 2025. The Company’s stock fair value used in this computation was $62.05 per share.
v3.25.1
INCOME TAXES
3 Months Ended
Mar. 31, 2025
Income Tax Disclosure [Abstract]  
INCOME TAXES INCOME TAXES
For the three months ended March 31, 2025 and 2024, the Company’s income tax provision totaled $17.2 million and $4.6 million, respectively, on income (loss) before income taxes of $46.9 million and $11.5 million, respectively. For the three months ended March 31, 2025 the income tax provision was calculated using the annualized effective tax rate method and was primarily due to tax expense in U.S. and foreign jurisdictions that are profitable, tax expense from equity compensation shortfalls, and prior year true up adjustments. For the three months ended March 31, 2024, the income tax provision was calculated using the annualized effective tax rate method and was primarily due to tax expense from equity compensation shortfalls, offset by tax benefit from year-to-date loss before income taxes.
For the three months ended March 31, 2025 and 2024, in accordance with FASB guidance for interim reporting of income tax, the Company has computed its provision for income taxes based on a projected annual effective tax rate while excluding loss jurisdictions, which cannot be benefited.
In December 2021, the Organization for Economic Co-operation and Development Inclusive Framework on Base Erosion Profit Shifting released Model Global Anti-Base Erosion rules (“Model Rules”) under Pillar Two. The Model Rules set forth the “common approach” for a Global Minimum Tax at 15 percent for multinational enterprises with a turnover of more than 750 million euros. The Company does not expect adoption of Pillar Two rules to have a significant impact on its consolidated financial statements during fiscal year 2025.
v3.25.1
NET INCOME (LOSS) PER SHARE
3 Months Ended
Mar. 31, 2025
Earnings Per Share [Abstract]  
NET INCOME (LOSS) PER SHARE NET INCOME (LOSS) PER SHARE
Basic net income (loss) per share is computed by dividing net income (loss) by the weighted average number of shares of common stock outstanding during the period. Diluted net income per share is computed in a similar manner, but it also includes the effect of potential common shares outstanding during the period, when dilutive.
The following table presents the computation of basic and diluted net income (loss) per share for the periods presented:
Three Months Ended
March 31,
20252024
(In thousands, except per share data)
Numerator:
Net income (loss)$29,730 $(16,097)
Notes due 2028 and Notes due 2026 financing costs, net605 — 
Adjusted net income (loss)$30,335 $(16,097)
Denominator:
Shares used in basic per share amounts:
Weighted average common shares outstanding131,869 135,891 
Shares used in diluted per share amounts:
Weighted average common shares outstanding used for basic calculation131,869 135,891 
Effect of dilutive securities:
Employee stock-based awards264 — 
Notes due 20262,057 — 
Notes due 20282,018 — 
Weighted average common shares outstanding for diluted calculation136,208 135,891 
Basic and diluted net income (loss) per share
Net income (loss) per share, basic$0.23 $(0.12)
Net income (loss) per share, diluted$0.22 $(0.12)
Diluted earnings per share for the three months ended March 31, 2025 includes the dilutive effect of potentially dilutive common shares by application of the treasury stock method for stock options, RSUs, PSUs, ESPP, Notes due 2025, and includes potentially dilutive common shares by application of the if-converted method for the Notes due 2026 and Notes due 2028. To the extent these potential common shares are antidilutive, they are excluded from the calculation of diluted net income per share.
Further, the Company under the relevant sections of the indentures, irrevocably may elect to settle principal in cash and any excess in cash or shares of the Company’s common stock for the Notes due 2026 and Notes due 2028. If and when the Company makes such election, there will be no adjustment to the net income and the Company will use the average share price for the period to determine the potential number of shares to be issued based upon assumed conversion to be included in the diluted share count.
The Company's Notes due 2025 were convertible at any time from October 1, 2024, until the close of business on the second scheduled trading day immediately preceding the maturity date of March 1, 2025. Upon
conversion, the Notes due 2025 were required to be settled using a combination settlement method, whereby the principal amount was paid in cash, and any excess conversion value was settled in shares of the Company's common stock. As a result of this settlement, no adjustment to net income was required for the three months ended March 31, 2025. For purposes of calculating diluted earnings per share, the Company utilized the average share price during the period from January 1, 2025 through March 1, 2025 to determine the potential number of shares issuable upon conversion and be included in the diluted share count.
The following outstanding shares of common stock equivalents were excluded from the calculation of the diluted net income (loss) per share attributable to common stockholders because their effect would have been antidilutive:
Three Months Ended
March 31,
20252024
(In thousands)
Employee stock-based awards3,071 1,656 
Notes due 2025323 1,253 
Notes due 2026— 2,057 
2026 Warrants10,879 4,958 
Notes due 2028— 2,018 
2028 Warrants10,675 4,865 
Total24,948 16,807 
v3.25.1
SEGMENT INFORMATION
3 Months Ended
Mar. 31, 2025
Segment Reporting [Abstract]  
SEGMENT INFORMATION SEGMENT INFORMATION
The Company’s chief operating decision maker is the Chief Executive Officer (the “CEO”). The Company has one business activity, which entails the design, development, manufacture and sale of solutions for the solar PV industry. There are no segment managers who are held accountable for operations, operating results or plans for levels or components below the consolidated unit level. Accordingly, management has determined that the Company has a single operating and reportable segment. The primary measure of segment profit or loss is consolidated net income as presented below and is used by the CEO for the purpose of evaluating segment performance and allocation of budget to support business expansion, new product development and operational efficiencies.
Three Months Ended
March 31,
20252024
(In thousands)
Net revenues$356,084 $263,339 
Less:
Other cost of revenues(1)
219,882 155,493 
Income-based government grants(53,631)(18,617)
Incremental cost for manufacturing in the United States(2)
15,773 4,882 
Stock-based compensation expense55,633 60,833 
Acquisition related amortization4,429 5,353 
Other restructuring and asset impairment charges(3)
2,653 1,907 
Other research and development(4)
28,527 29,661 
Other sales and marketing(5)
29,703 31,667 
Other general and administrative(6)
21,193 21,259 
Income (loss) from operations31,922 (29,099)
Total other income, net14,971 17,600 
Income (loss) from income taxes46,893 (11,499)
Income tax provision(17,163)(4,598)
Net Income (loss)$29,730 $(16,097)
(1)    Represents consolidated cost of revenue, excluding stock-based compensation, acquisition related amortization, income-based government grants and incremental costs for manufacturing in the United States.
(2)    Represents the incremental manufacturing cost incurred in the United States relative to manufacturing in India. This is calculated based on the difference in product cost for manufacturing the product in the United States as compared to India for the same or similar products. It also includes the portion of the income-based government grants earned that the Company remits to its contract manufacturers.
(3)    Represents consolidated restructuring and asset impairment charges, excluding stock-based compensation.
(4)    Represents consolidated research and development, excluding stock-based compensation.
(5)    Represents consolidated sales and marketing, excluding stock-based compensation and acquisition related amortization.
(6)    Represents consolidated general and administrative, excluding stock-based compensation.
v3.25.1
Pay vs Performance Disclosure - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Pay vs Performance Disclosure    
Net income (loss) $ 29,730 $ (16,097)
v3.25.1
Insider Trading Arrangements
3 Months Ended
Mar. 31, 2025
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
v3.25.1
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (Policies)
3 Months Ended
Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Basis of Presentation and Consolidation
Basis of Presentation and Consolidation
The accompanying condensed consolidated financial statements are presented in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”). The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
Unaudited Interim Financial Information
These accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial reporting. In the opinion of management, these unaudited condensed consolidated financial statements reflect all adjustments, consisting of normal recurring items, considered necessary to present fairly the Company’s financial condition, results of operations, comprehensive income (loss), stockholders’ equity and cash flows for the interim periods indicated. The results of operations for the three months ended March 31, 2025 are not necessarily indicative of the operating results for the full year.
Use of Estimates
Use of Estimates
The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Significant estimates and assumptions reflected in the financial statements include revenue recognition, allowance for credit losses, stock-based compensation, deferred compensation arrangements, income tax provision, inventory valuation, government grants, accrued warranty obligations, fair value of investments, convertible notes, fair value of acquired intangible assets and goodwill, useful lives of acquired intangible assets and property and equipment, incremental borrowing rate for right-of-use assets and lease liability. These estimates are based on information available as of the date of the financial statements; therefore, actual results could differ materially from those estimates due to risks and uncertainties.
The year-end condensed consolidated balance sheet data was derived from audited financial statements but does not include all disclosures required by U.S. GAAP. The Company filed audited consolidated financial statements, which included all information and notes necessary for such a complete presentation in conjunction with its Annual Report on Form 10-K for the fiscal year ended December 31, 2024 filed with the SEC on February 10, 2025 (the “Form 10‑K”).
Recently Adopted and Issued Accounting Pronouncements Not Yet Adopted and Not Yet Effective
Recently Adopted Accounting Pronouncements
Not Yet Adopted
In December 2023, the Financial Accounting Standard Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” (“ASU 2023-09”). ASU 2023-09 requires that an entity disclose specific categories in the effective tax rate reconciliation as well as provide additional information for reconciling items that meet a quantitative threshold, certain disclosures of state versus
federal income tax expenses and taxes paid. ASU 2023-09 was effective for fiscal years beginning after December 15, 2024 and interim periods for fiscal years beginning after December 15, 2025. The Company plans to adopt ASU 2023-09 in its annual report on Form 10-K for the year ending December 31, 2025. As ASU 2023-09 affects only disclosures, the adoption of ASU 2023-09 is not expected to have a significant impact on its consolidated financial statements.
Recently Issued Accounting Pronouncements
Not Yet Effective
In November 2024, the FASB issued ASU 2024-03, “Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures” (“ASU 2024-03”), which requires additional disclosure of certain costs and expenses within the notes to the financial statements. ASU 2024-03 will be effective for fiscal years beginning after December 15, 2026, and interim periods beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating the impact from ASU 2024-03 on its consolidated financial statements disclosures.
Fair Value Measurements
The accounting guidance defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and considers assumptions that market participants would use when pricing the asset or liability, such as inherent risk, transfer restrictions, and risk of nonperformance.
The fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. An asset’s or liability’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Three levels of inputs may be used to measure fair value:
Level 1 - Valuations based on quoted prices in active markets for identical assets or liabilities that the Company is able to access. Since valuations are based on quoted prices that are readily and regularly available in an active market, valuation of such assets or liabilities do not entail a significant degree of judgment.
Level 2 - Valuations based on one or more quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly.
Level 3 - Valuations based on inputs that are unobservable and significant to the overall fair value measurement.
Net Income Per Share
Basic net income (loss) per share is computed by dividing net income (loss) by the weighted average number of shares of common stock outstanding during the period. Diluted net income per share is computed in a similar manner, but it also includes the effect of potential common shares outstanding during the period, when dilutive.
v3.25.1
REVENUE RECOGNITION (Tables)
3 Months Ended
Mar. 31, 2025
Revenue from Contract with Customer [Abstract]  
Schedule of Revenue Disaggregation Disaggregated revenue by primary geographical market and timing of revenue recognition for the Company’s single product line are as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Primary geographical markets:
United States$263,238 $149,974 
International
92,846 113,365 
Total$356,084 $263,339 
Timing of revenue recognition:
Products delivered at a point in time$322,886 $233,145 
Products and services delivered over time33,198 30,194 
Total$356,084 $263,339 
Schedule of Contract Assets and Contract Liabilities, and Changes in Balances from Contracts with Customers
Accounts receivable, and contract assets and contract liabilities from contracts with customers, are as follows:
March 31,
2025
December 31,
2024
(In thousands)
Accounts receivable$225,625 $223,749 
Short-term contract assets (Prepaid expenses and other current assets)42,098 42,001 
Long-term contract assets (Other assets)108,403 110,954 
Short-term contract liabilities (Deferred revenues, current)167,771 237,225 
Long-term contract liabilities (Deferred revenues, non-current)333,704 341,982 
Significant changes in the balances of contract assets (prepaid expenses and other current assets) as of March 31, 2025 are as follows (in thousands):
Contract Assets
Contract Assets, beginning of period$152,955 
Amount recognized(9,879)
Increased due to billings7,425 
Contract Assets, end of period$150,501 
Significant changes in contract liabilities (deferred revenues) as of March 31, 2025 are as follows (in thousands):
Contract Liabilities
Contract Liabilities, beginning of period$579,207 
Revenue recognized(103,106)
Increased due to billings25,374 
Contract Liabilities, end of period$501,475 
Schedule of Estimated Revenue Expected to be Recognized in Future Periods
Estimated revenue expected to be recognized in future periods related to performance obligations that are unsatisfied or partially unsatisfied at the end of the reporting period are as follows:
March 31,
2025
(In thousands)
Fiscal year:
2025 (remaining nine months)$138,025 
2026113,805 
202793,659 
202872,391 
202947,931 
Thereafter35,664 
Total$501,475 
v3.25.1
OTHER FINANCIAL INFORMATION (Tables)
3 Months Ended
Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Summary of Inventory
Inventory consists of the following:
March 31,
2025
December 31,
2024
(In thousands)
Raw materials$40,389 $38,740 
Finished goods103,636 126,264 
Total inventory$144,025 $165,004 
Schedule of Accrued Liabilities
Accrued liabilities consist of the following:
March 31,
2025
December 31,
2024
(In thousands)
Customer rebates and sales incentives$88,084 $96,324 
Liability due to supply agreements48,756 42,745 
Freight8,549 7,497 
Salaries, commissions, incentive compensation and benefits18,235 11,956 
Income tax payable11,497 3,540 
Operating lease liabilities, current6,154 5,815 
VAT payable3,302 1,472 
Liabilities related to restructuring accruals3,250 3,262 
Other24,342 24,276 
Total accrued liabilities$212,169 $196,887 
v3.25.1
GOODWILL AND INTANGIBLE ASSETS (Tables)
3 Months Ended
Mar. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The Company’s goodwill as of March 31, 2025 and December 31, 2024 was as follows:
GoodwillMarch 31,
2025
December 31,
2024
(In thousands)
Goodwill, beginning of period$211,571 $214,562 
Currency translation adjustment788 (2,991)
Goodwill, end of period$212,359 $211,571 
Schedule of Acquired Indefinite-lived Intangible Assets by Major Class
The Company’s purchased intangible assets as of March 31, 2025 and December 31, 2024 were as follows:
March 31, 2025December 31, 2024
GrossAccumulated AmortizationNetGrossAccumulated AmortizationImpairmentNet
(In thousands)
Intangible assets:
Indefinite-lived intangibles$286 $— $286 $286 $— $— $286 
Intangible assets with finite lives:
 Developed technology47,683 (37,462)10,221 51,054 (35,903)(3,351)11,800 
 Customer relationships51,114 (37,315)13,799 51,306 (35,804)(177)15,325 
 Trade names37,700 (24,598)13,102 37,700 (22,713)— 14,987 
Total purchased intangible assets$136,783 $(99,375)$37,408 $140,346 $(94,420)$(3,528)$42,398 
Schedule of Acquired Finite-Lived Intangible Assets by Major Class
The Company’s purchased intangible assets as of March 31, 2025 and December 31, 2024 were as follows:
March 31, 2025December 31, 2024
GrossAccumulated AmortizationNetGrossAccumulated AmortizationImpairmentNet
(In thousands)
Intangible assets:
Indefinite-lived intangibles$286 $— $286 $286 $— $— $286 
Intangible assets with finite lives:
 Developed technology47,683 (37,462)10,221 51,054 (35,903)(3,351)11,800 
 Customer relationships51,114 (37,315)13,799 51,306 (35,804)(177)15,325 
 Trade names37,700 (24,598)13,102 37,700 (22,713)— 14,987 
Total purchased intangible assets$136,783 $(99,375)$37,408 $140,346 $(94,420)$(3,528)$42,398 
Schedule of Amortization Expense
Amortization expense related to finite-lived intangible assets were as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Developed technology$1,593 $2,467 
Customer relationships
1,535 1,576 
Trade-names1,885 1,885 
Total amortization expense
$5,013 $5,928 
The expected future amortization expense of intangible assets as of March 31, 2025 is presented below:
March 31,
2025
(In thousands)
Fiscal year:
2025 (remaining nine months)$15,028 
202617,843 
20274,251 
Total$37,122 
v3.25.1
CASH EQUIVALENTS, RESTRICTED CASH AND MARKETABLE SECURITIES (Tables)
3 Months Ended
Mar. 31, 2025
Cash and Cash Equivalents [Abstract]  
Schedule of Debt Securities, Available-for-sale
The cash equivalents, restricted cash and marketable securities consist of the following:
As of March 31, 2025
Amortized CostGross Unrealized GainsGross Unrealized LossesFair ValueCash EquivalentsMarketable SecuritiesRestricted Cash
(In thousands)
Money market funds$175,480 $— $— $175,480 $175,480 $— $— 
Certificates of deposit93,218 15 (1)93,232 — 28,232 65,000 
Commercial paper21,433 14 (4)21,443 — 21,443 — 
Corporate notes and bonds398,540 1,302 (567)399,275 — 399,275 — 
U.S. Treasuries88,565 (41)88,525 — 88,525 — 
U.S. Government agency securities578,536 1,235 (466)579,305 — 579,305 — 
Total$1,355,772 $2,567 $(1,079)$1,357,260 $175,480 $1,116,780 $65,000 
As of December 31, 2024
Amortized CostGross Unrealized GainsGross Unrealized LossesFair ValueCash EquivalentsMarketable SecuritiesRestricted Cash
(In thousands)
Money market funds$191,410 $— $— $191,410 $191,410 $— $— 
Certificates of deposit125,087 13 (8)125,092 — 30,092 95,000 
Commercial paper30,681 40 (8)30,713 — 30,713 — 
Corporate notes and bonds449,612 1,115 (1,157)449,570 — 449,570 — 
U.S. Treasuries111,606 42 (36)111,612 — 111,612 — 
U.S. Government agency securities631,389 1,241 (1,137)631,493 — 631,493 — 
Total$1,539,785 $2,451 $(2,346)$1,539,890 $191,410 $1,253,480 $95,000 
Schedule of Investments Classified by Contractual Maturity Date
The following table summarizes the contractual maturities of the Company’s cash equivalents, restricted cash and marketable securities as of March 31, 2025:
Amortized CostFair Value
(In thousands)
Due within one year$877,661 $878,380 
Due within one to three years478,111 478,880 
Total$1,355,772 $1,357,260 
v3.25.1
WARRANTY OBLIGATIONS (Tables)
3 Months Ended
Mar. 31, 2025
Product Warranties Disclosures [Abstract]  
Schedule of Warranty Activities
The Company’s warranty obligation activities were as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Warranty obligations, beginning of period$192,889 $189,087 
Accruals for warranties issued during period7,309 6,098 
Expense (benefit) from changes in estimates7,721 (12,361)
Settlements(6,582)(6,893)
Increase due to accretion expense3,060 2,905 
Other(950)(1,672)
Warranty obligations, end of period203,447 177,164 
Less: warranty obligations, current(33,298)(30,868)
Warranty obligations, non-current$170,149 $146,296 
v3.25.1
FAIR VALUE MEASUREMENTS (Tables)
3 Months Ended
Mar. 31, 2025
Fair Value Disclosures [Abstract]  
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis
The following table presents assets and liabilities measured at fair value on a recurring basis using the above input categories:
March 31, 2025December 31, 2024
(In thousands)
Level 1Level 2Level 3Level 1Level 2Level 3
Assets:
Cash equivalents, restricted cash and marketable securities:
Money market funds$175,480 $— $— $191,410 $— $— 
Certificates of deposit65,000 — — 95,000 — — 
Commercial paper— — — — — — 
Corporate notes and bonds— — — — — 
Marketable securities:
Certificates of deposit— 28,232 — — 30,092 — 
Commercial paper— 21,443 — — 30,713 — 
Corporate notes and bonds— 399,275 — — 449,570 — 
U.S. Treasuries— 88,525 — — 111,612 — 
U.S. Government agency securities— 579,305 — — 631,493 — 
Other assets:
Investments in debt securities— — 65,157 — — 64,834 
Investment in tax equity fund— — 5,190 — — — 
Total assets measured at fair value$240,480 $1,116,780 $70,347 $286,410 $1,253,480 $64,834 
Liabilities:
Warranty obligations:
Current$— $— $26,200 $— $— $27,173 
Non-current— — 153,853 — — 143,743 
Total warranty obligations measured at fair value— — 180,053 — — 170,916 
Total liabilities measured at fair value$— $— $180,053 $— $— $170,916 
Schedule of Significant Unobservable Inputs used in the Fair Value Measurement of Assets Designated as Level 3 The changes in the balance in investments in debt securities during the period were as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Balance at beginning of period$64,834 $79,855 
Fair value adjustments included in other income, net323 942 
Balance at end of period$65,157 $80,797 
Schedule of Changes in Nonfinancial Liabilities Related to Warrant Obligations Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs
The following table provides information regarding changes in nonfinancial liabilities related to the Company’s warranty obligations measured at fair value on a recurring basis using significant unobservable inputs designated as Level 3 for the periods indicated:
Three Months Ended
March 31,
20252024
(In thousands)
Balance at beginning of period$170,916 $161,793 
Accruals for warranties issued during period7,299 6,082 
Changes in estimates4,626 (12,018)
Settlements(4,898)(6,540)
Increase due to accretion expense3,060 2,905 
Other(950)(1,672)
Balance at end of period$180,053 $150,550 
Schedule of Significant Unobservable Inputs used in the Fair Value Measurement of Liabilities Designated as Level 3
As of March 31, 2025 and December 31, 2024, the significant unobservable inputs used in the fair value measurement of the Company’s liabilities designated as Level 3 were as follows:
Percent Used
(Weighted Average)
Item Measured at Fair ValueValuation TechniqueDescription of Significant Unobservable InputMarch 31,
2025
December 31,
2024
Warranty obligations for products sold since January 1, 2014Discounted cash flowsProfit element and risk premium17.5%16.8%
Credit-adjusted risk-free rate7.2%7.2%
v3.25.1
RESTRUCTURING AND ASSET IMPAIRMENT CHARGES (Tables)
3 Months Ended
Mar. 31, 2025
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring and Related Costs
The following table presents the details of the Company’s restructuring and asset impairment charges under the 2024 Restructuring Plan for the three months ended March 31, 2025:
Three Months Ended
March 31,
2025
(In thousands)
Employee severance and benefits $3,371 
Contract termination charges(236)
Asset impairment27 
Total restructuring and asset impairment charges$3,162 
The following table provides information regarding changes in the Company’s accrued restructuring balances under the 2024 Restructuring Plan for the periods indicated:
Employee Severance and BenefitsContract Termination Charges Asset ImpairmentTotal
(In thousands)
Balance as of December 31, 2024$2,220 $766 $— $2,986 
Charges3,371 (236)27 3,162 
Cash payments and receipts, net(2,634)(1)— (2,635)
Non-cash settlement and other(509)— (27)(536)
Balance as of March 31, 2025$2,448 $529 $— $2,977 
v3.25.1
DEBT (Tables)
3 Months Ended
Mar. 31, 2025
Debt Disclosure [Abstract]  
Schedule of Debt
The following table provides information regarding the Company’s debt:
March 31,
2025
December 31,
2024
(In thousands)
Convertible notes
Notes due 2028$575,000 $575,000 
Less: unamortized debt issuance costs(3,786)(4,102)
Carrying amount of Notes due 2028 571,214 570,898 
Notes due 2026632,500 632,500 
Less: unamortized debt issuance costs(1,823)(2,309)
Carrying amount of Notes due 2026 630,677 630,191 
Notes due 2025— 102,168 
Less: unamortized debt discount— (803)
Less: unamortized debt issuance costs— (74)
Carrying amount of Notes due 2025— 101,291 
Total carrying amount of debt1,201,891 1,302,380 
Less: debt, current(630,677)(101,291)
Debt, non-current$571,214 $1,201,089 
The following table presents the total amount of interest cost recognized in the consolidated statement of operations relating to the Company’s notes:
Three Months Ended
March 31,
20252024
Notes due 2028Notes due 2026Notes due 2025Notes due 2028Notes due 2026Notes due 2025
(In thousands)
Contractual interest expense$— $— $43 $— $— $64 
Amortization of debt discount— — 803 — — 1,177 
Amortization of debt issuance costs316 485 75 326 503 126 
Total interest cost recognized$316 $485 $921 $326 $503 $1,367 
v3.25.1
COMMITMENTS AND CONTINGENCIES (Tables)
3 Months Ended
Mar. 31, 2025
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Components of Lease
The components of lease expense are presented as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Operating lease costs$2,817 $2,647 
The components of right of use assets and lease liabilities are presented as follows:
March 31,
2025
December 31,
2024
(In thousands, except years and percentage data)
Operating Leases:
Operating lease, right of use asset, net (Other assets)$27,949 $24,617 
Operating lease liabilities, current (Accrued liabilities)
$6,154 $5,815 
Operating lease liabilities, non-current (Other liabilities)26,560 23,044 
Total operating lease liabilities
$32,714 $28,859 
Supplemental lease information:
Weighted average remaining lease term
6.4 years5.9 years
Weighted average discount rate
6.6%6.7%
Supplemental cash flow and other information related to operating leases were as follows:
Three Months Ended
March 31,
20252024
(In thousands)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases$2,131 $1,905 
Non-cash investing activities:
Lease liabilities arising from obtaining right-of-use assets
$7,260 $1,695 
Schedule of Future Minimum Rental Payments for Operating Leases
Undiscounted cash flows of operating lease liabilities as of March 31, 2025 were as follows:
Lease Amounts
(In thousands)
Year:
2025 (remaining nine months)$6,125 
20267,768 
20275,408 
20284,432 
20294,378 
Thereafter12,567 
Total lease payments
40,678 
Less: imputed lease interest
(7,964)
Total lease liabilities
$32,714 
v3.25.1
STOCK-BASED COMPENSATION (Tables)
3 Months Ended
Mar. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of the Components of Total Stock-Based Compensation Expense
The following table summarizes the components of total stock-based compensation expense included in the condensed consolidated statements of operations for the periods presented:
Three Months Ended
March 31,
20252024
(In thousands)
Cost of revenues$4,239 $4,182 
Research and development21,647 24,550 
Sales and marketing16,396 18,178 
General and administrative12,842 13,923 
Restructuring509 — 
Total$55,633 $60,833 
Schedule of Stock-Based Compensation Associated with Each Type of Award
The following table summarizes the various types of stock-based compensation expense for the periods presented:
Three Months Ended
March 31,
20252024
(In thousands)
RSUs and PSUs$54,176 $58,787 
ESPP1,457 2,046 
Total$55,633 $60,833 
Schedule of Restricted Stock Unit Activity
The following table summarizes RSU activity:
Number of
Shares
Outstanding
Weighted-
Average
Fair Value
per Share at
Grant Date
Weighted-
Average
Remaining
Contractual
Term
Aggregate
Intrinsic
Value
(1)
(In thousands)(Years)(In thousands)
Outstanding at December 31, 20242,283 $139.27 
Granted615 65.27 
Vested(357)153.03 $21,716 
Canceled(158)140.43 
Outstanding at March 31, 20252,383 $118.04 1.5$147,824 
Expected to vest at March 31, 20252,374 $117.79 1.5$147,334 
(1)    The intrinsic value of RSUs vested is based upon the value of the Company’s stock when vested. The intrinsic value of RSUs outstanding and expected to vest as of March 31, 2025 is based on the closing price of the last trading day during the period ended March 31, 2025. The Company’s stock fair value used in this computation was $62.05 per share.
Schedule of Share-based Compensation, Performance Shares Award Outstanding Activity
The following summarizes PSU activity:
Number of
Shares
Outstanding
Weighted-
Average
Fair Value
per Share at
Grant Date
Weighted-
Average
Remaining
Contractual
Term
Aggregate
Intrinsic
Value
(1)
(In thousands)(Years)(In thousands)
Outstanding at December 31, 2024899 $154.67 
Granted1,128 77.71 
Vested(175)110.20 $10,017 
Canceled(197)118.43 
Outstanding at March 31, 20251,655 $111.23 1.8$102,672 
Expected to vest at March 31, 20251,655 $111.23 1.8$102,672 
(1)    The intrinsic value of PSUs vested is based upon the value of the Company’s stock when vested. The intrinsic value of PSUs outstanding and expected to vest as of March 31, 2025 is based on the closing price of the last trading day during the period ended March 31, 2025. The Company’s stock fair value used in this computation was $62.05 per share.
v3.25.1
NET INCOME (LOSS) PER SHARE (Tables)
3 Months Ended
Mar. 31, 2025
Earnings Per Share [Abstract]  
Schedule of Computation of Basic and Diluted Net Income Per Share
The following table presents the computation of basic and diluted net income (loss) per share for the periods presented:
Three Months Ended
March 31,
20252024
(In thousands, except per share data)
Numerator:
Net income (loss)$29,730 $(16,097)
Notes due 2028 and Notes due 2026 financing costs, net605 — 
Adjusted net income (loss)$30,335 $(16,097)
Denominator:
Shares used in basic per share amounts:
Weighted average common shares outstanding131,869 135,891 
Shares used in diluted per share amounts:
Weighted average common shares outstanding used for basic calculation131,869 135,891 
Effect of dilutive securities:
Employee stock-based awards264 — 
Notes due 20262,057 — 
Notes due 20282,018 — 
Weighted average common shares outstanding for diluted calculation136,208 135,891 
Basic and diluted net income (loss) per share
Net income (loss) per share, basic$0.23 $(0.12)
Net income (loss) per share, diluted$0.22 $(0.12)
Schedule of Potentially Dilutive Securities Excluded from the Computation of Diluted Net Income Per Share
The following outstanding shares of common stock equivalents were excluded from the calculation of the diluted net income (loss) per share attributable to common stockholders because their effect would have been antidilutive:
Three Months Ended
March 31,
20252024
(In thousands)
Employee stock-based awards3,071 1,656 
Notes due 2025323 1,253 
Notes due 2026— 2,057 
2026 Warrants10,879 4,958 
Notes due 2028— 2,018 
2028 Warrants10,675 4,865 
Total24,948 16,807 
v3.25.1
SEGMENT INFORMATION (Tables)
3 Months Ended
Mar. 31, 2025
Segment Reporting [Abstract]  
Schedule of Measure of Segment Profit or Loss
Three Months Ended
March 31,
20252024
(In thousands)
Net revenues$356,084 $263,339 
Less:
Other cost of revenues(1)
219,882 155,493 
Income-based government grants(53,631)(18,617)
Incremental cost for manufacturing in the United States(2)
15,773 4,882 
Stock-based compensation expense55,633 60,833 
Acquisition related amortization4,429 5,353 
Other restructuring and asset impairment charges(3)
2,653 1,907 
Other research and development(4)
28,527 29,661 
Other sales and marketing(5)
29,703 31,667 
Other general and administrative(6)
21,193 21,259 
Income (loss) from operations31,922 (29,099)
Total other income, net14,971 17,600 
Income (loss) from income taxes46,893 (11,499)
Income tax provision(17,163)(4,598)
Net Income (loss)$29,730 $(16,097)
(1)    Represents consolidated cost of revenue, excluding stock-based compensation, acquisition related amortization, income-based government grants and incremental costs for manufacturing in the United States.
(2)    Represents the incremental manufacturing cost incurred in the United States relative to manufacturing in India. This is calculated based on the difference in product cost for manufacturing the product in the United States as compared to India for the same or similar products. It also includes the portion of the income-based government grants earned that the Company remits to its contract manufacturers.
(3)    Represents consolidated restructuring and asset impairment charges, excluding stock-based compensation.
(4)    Represents consolidated research and development, excluding stock-based compensation.
(5)    Represents consolidated sales and marketing, excluding stock-based compensation and acquisition related amortization.
(6)    Represents consolidated general and administrative, excluding stock-based compensation.
v3.25.1
REVENUE RECOGNITION - Schedule of Disaggregated Revenue by Primary Geographical Market and Timing of Revenue Recognition (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Disaggregation of Revenue [Line Items]    
Net revenues $ 356,084 $ 263,339
Products delivered at a point in time    
Disaggregation of Revenue [Line Items]    
Net revenues 322,886 233,145
Products and services delivered over time    
Disaggregation of Revenue [Line Items]    
Net revenues 33,198 30,194
United States    
Disaggregation of Revenue [Line Items]    
Net revenues 263,238 149,974
International    
Disaggregation of Revenue [Line Items]    
Net revenues $ 92,846 $ 113,365
v3.25.1
REVENUE RECOGNITION - Schedule of Contract Assets and Contract Liabilities from Contracts with Customers (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Revenue from Contract with Customer [Abstract]    
Accounts receivable $ 225,625 $ 223,749
Short-term contract assets (Prepaid expenses and other current assets) 42,098 42,001
Long-term contract assets (Other assets) 108,403 110,954
Short-term contract liabilities (Deferred revenues, current) 167,771 237,225
Long-term contract liabilities (Deferred revenues, non-current) $ 333,704 $ 341,982
v3.25.1
REVENUE RECOGNITION - Narrative (Details)
3 Months Ended
Mar. 31, 2025
USD ($)
Revenue from Contract with Customer [Abstract]  
Contract asset impairment charges $ 0
v3.25.1
REVENUE RECOGNITION - Schedule of Significant Changes in the Balances of Contract Liabilities and Assets (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2025
USD ($)
Contract Assets  
Contract Assets, beginning of period $ 152,955
Amount recognized (9,879)
Increased due to billings 7,425
Contract Assets, end of period 150,501
Contract Liabilities  
Contract Liabilities, beginning of period 579,207
Revenue recognized (103,106)
Increased due to billings 25,374
Contract Liabilities, end of period $ 501,475
v3.25.1
REVENUE RECOGNITION - Schedule of Estimated Revenue Expected to be Recognized in Future Periods (Details)
$ in Thousands
Mar. 31, 2025
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total estimated revenue expected to be recognized in future periods $ 501,475
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total estimated revenue expected to be recognized in future periods $ 138,025
Total estimated revenue expected to be recognized in future periods, expected timing 9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total estimated revenue expected to be recognized in future periods $ 113,805
Total estimated revenue expected to be recognized in future periods, expected timing 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total estimated revenue expected to be recognized in future periods $ 93,659
Total estimated revenue expected to be recognized in future periods, expected timing 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total estimated revenue expected to be recognized in future periods $ 72,391
Total estimated revenue expected to be recognized in future periods, expected timing 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total estimated revenue expected to be recognized in future periods $ 47,931
Total estimated revenue expected to be recognized in future periods, expected timing 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total estimated revenue expected to be recognized in future periods $ 35,664
Total estimated revenue expected to be recognized in future periods, expected timing
v3.25.1
OTHER FINANCIAL INFORMATION - Inventory (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Raw materials $ 40,389 $ 38,740
Finished goods 103,636 126,264
Total inventory $ 144,025 $ 165,004
v3.25.1
OTHER FINANCIAL INFORMATION - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Customer rebates and sales incentives $ 88,084 $ 96,324
Liability due to supply agreements 48,756 42,745
Freight 8,549 7,497
Salaries, commissions, incentive compensation and benefits 18,235 11,956
Income tax payable 11,497 3,540
Operating lease liabilities, current 6,154 5,815
VAT payable 3,302 1,472
Liabilities related to restructuring accruals 3,250 3,262
Other 24,342 24,276
Total accrued liabilities $ 212,169 $ 196,887
v3.25.1
GOODWILL AND INTANGIBLE ASSETS - Schedule of Goodwill (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Goodwill [Roll Forward]    
Goodwill, beginning of period $ 211,571 $ 214,562
Currency translation adjustment 788 (2,991)
Goodwill, end of period $ 212,359 $ 211,571
v3.25.1
GOODWILL AND INTANGIBLE ASSETS - Schedule of Acquired Intangible Assets (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]    
Indefinite-lived intangibles $ 286 $ 286
Intangible assets with finite lives:    
Accumulated Amortization (99,375) (94,420)
Impairment   (3,528)
Net 37,122  
Total purchased intangible assets, gross 136,783 140,346
Total purchased intangible assets, net $ 37,408 $ 42,398
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration] Charges Charges
Developed technology    
Intangible assets with finite lives:    
Gross $ 47,683 $ 51,054
Accumulated Amortization (37,462) (35,903)
Impairment   (3,351)
Net 10,221 11,800
Customer relationships    
Intangible assets with finite lives:    
Gross 51,114 51,306
Accumulated Amortization (37,315) (35,804)
Impairment   (177)
Net 13,799 15,325
Trade names    
Intangible assets with finite lives:    
Gross 37,700 37,700
Accumulated Amortization (24,598) (22,713)
Impairment   0
Net $ 13,102 $ 14,987
v3.25.1
GOODWILL AND INTANGIBLE ASSETS - Narrative (Details)
$ in Millions
3 Months Ended
Mar. 31, 2025
USD ($)
GreenCom  
Finite-Lived Intangible Assets [Line Items]  
Decrease in intangible assets acquired $ 0.1
v3.25.1
GOODWILL AND INTANGIBLE ASSETS - Schedule of Amortization Expense (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Finite-Lived Intangible Assets [Line Items]    
Total amortization expense $ 5,013 $ 5,928
Developed technology    
Finite-Lived Intangible Assets [Line Items]    
Total amortization expense 1,593 2,467
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Total amortization expense 1,535 1,576
Trade-names    
Finite-Lived Intangible Assets [Line Items]    
Total amortization expense $ 1,885 $ 1,885
v3.25.1
GOODWILL AND INTANGIBLE ASSETS - Schedule of Expected Future Amortization Expense (Details)
$ in Thousands
Mar. 31, 2025
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2025 (remaining nine months) $ 15,028
2026 17,843
2027 4,251
Total $ 37,122
v3.25.1
CASH EQUIVALENTS, RESTRICTED CASH AND MARKETABLE SECURITIES - Schedule of Investments (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost $ 1,355,772 $ 1,539,785
Gross Unrealized Gains 2,567 2,451
Gross Unrealized Losses (1,079) (2,346)
Fair Value 1,357,260 1,539,890
Cash Equivalents    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 175,480 191,410
Marketable Securities    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 1,116,780 1,253,480
Restricted Cash    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 65,000 95,000
Money market funds    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 175,480 191,410
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Fair Value 175,480 191,410
Money market funds | Cash Equivalents    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 175,480 191,410
Money market funds | Marketable Securities    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 0 0
Money market funds | Restricted Cash    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 0 0
Certificates of deposit    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 93,218 125,087
Gross Unrealized Gains 15 13
Gross Unrealized Losses (1) (8)
Fair Value 93,232 125,092
Certificates of deposit | Cash Equivalents    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 0 0
Certificates of deposit | Marketable Securities    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 28,232 30,092
Certificates of deposit | Restricted Cash    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 65,000 95,000
Commercial paper    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 21,433 30,681
Gross Unrealized Gains 14 40
Gross Unrealized Losses (4) (8)
Fair Value 21,443 30,713
Commercial paper | Cash Equivalents    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 0 0
Commercial paper | Marketable Securities    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 21,443 30,713
Commercial paper | Restricted Cash    
Debt Securities, Available-for-sale [Line Items]    
Fair Value   0
Corporate notes and bonds    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 398,540 449,612
Gross Unrealized Gains 1,302 1,115
Gross Unrealized Losses (567) (1,157)
Fair Value 399,275 449,570
Corporate notes and bonds | Cash Equivalents    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 0 0
Corporate notes and bonds | Marketable Securities    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 399,275 449,570
Corporate notes and bonds | Restricted Cash    
Debt Securities, Available-for-sale [Line Items]    
Fair Value   0
U.S. Treasuries    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 88,565 111,606
Gross Unrealized Gains 1 42
Gross Unrealized Losses (41) (36)
Fair Value 88,525 111,612
U.S. Treasuries | Cash Equivalents    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 0 0
U.S. Treasuries | Marketable Securities    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 88,525 111,612
U.S. Treasuries | Restricted Cash    
Debt Securities, Available-for-sale [Line Items]    
Fair Value   0
U.S. Government agency securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 578,536 631,389
Gross Unrealized Gains 1,235 1,241
Gross Unrealized Losses (466) (1,137)
Fair Value 579,305 631,493
U.S. Government agency securities | Cash Equivalents    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 0 0
U.S. Government agency securities | Marketable Securities    
Debt Securities, Available-for-sale [Line Items]    
Fair Value $ 579,305 631,493
U.S. Government agency securities | Restricted Cash    
Debt Securities, Available-for-sale [Line Items]    
Fair Value   $ 0
v3.25.1
CASH EQUIVALENTS, RESTRICTED CASH AND MARKETABLE SECURITIES - Schedule of Contractual Maturity (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Cash and Cash Equivalents [Abstract]    
Contractual maturities, Due within one year, Amortized Cost $ 877,661  
Contractual maturities, Due within one year, Fair Value 878,380  
Contractual maturities, Due within one to three years, Amortized Cost 478,111  
Contractual maturities, Due within one to three years, Fair Value 478,880  
Amortized Cost 1,355,772 $ 1,539,785
Fair Value $ 1,357,260 $ 1,539,890
v3.25.1
WARRANTY OBLIGATIONS - Schedule of Warranty Activities (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Changes in the Company's product warranty liability      
Warranty obligations, beginning of period $ 192,889 $ 189,087  
Accruals for warranties issued during period 7,309 6,098  
Expense (benefit) from changes in estimates 7,721 (12,361)  
Settlements (6,582) (6,893)  
Increase due to accretion expense 3,060 2,905  
Other (950) (1,672)  
Warranty obligations, end of period 203,447 177,164  
Less: warranty obligations, current (33,298) (30,868) $ (34,656)
Warranty obligations, non-current $ 170,149 $ 146,296 $ 158,233
v3.25.1
WARRANTY OBLIGATIONS - Narrative (Details) 10Q - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Product Warranty Liability [Line Items]    
Change in estimates, increase (decrease) $ 7,721 $ (12,361)
Product Replacement Costs Related To Battery    
Product Warranty Liability [Line Items]    
Change in estimates, increase (decrease) 5,900 (9,300)
Field Performance Data And Diagnostic Root-Cause Failure Analysis To Other Products    
Product Warranty Liability [Line Items]    
Change in estimates, increase (decrease) $ 1,800 $ (3,100)
v3.25.1
FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Assets:    
Marketable securities $ 1,357,260 $ 1,539,890
Certificates of deposit    
Assets:    
Marketable securities 93,232 125,092
Commercial paper    
Assets:    
Marketable securities 21,443 30,713
Corporate notes and bonds    
Assets:    
Marketable securities 399,275 449,570
U.S. Treasuries    
Assets:    
Marketable securities 88,525 111,612
U.S. Government agency securities    
Assets:    
Marketable securities 579,305 631,493
Recurring | Level 1    
Assets:    
Investments in debt securities 0 0
Investment in tax equity fund 0 0
Total assets measured at fair value 240,480 286,410
Warranty obligations:    
Current 0 0
Non-current 0 0
Total warranty obligations measured at fair value 0 0
Total liabilities measured at fair value 0 0
Recurring | Level 1 | Certificates of deposit    
Assets:    
Marketable securities 0 0
Recurring | Level 1 | Commercial paper    
Assets:    
Marketable securities 0 0
Recurring | Level 1 | Corporate notes and bonds    
Assets:    
Marketable securities 0 0
Recurring | Level 1 | U.S. Treasuries    
Assets:    
Marketable securities 0 0
Recurring | Level 1 | U.S. Government agency securities    
Assets:    
Marketable securities 0 0
Recurring | Level 1 | Money market funds    
Assets:    
Cash, cash equivalents and restricted cash 175,480 191,410
Recurring | Level 1 | Certificates of deposit    
Assets:    
Cash, cash equivalents and restricted cash 65,000 95,000
Recurring | Level 1 | Commercial paper    
Assets:    
Cash, cash equivalents and restricted cash 0 0
Recurring | Level 1 | Corporate notes and bonds    
Assets:    
Cash, cash equivalents and restricted cash 0
Recurring | Level 2    
Assets:    
Investments in debt securities 0 0
Investment in tax equity fund 0 0
Total assets measured at fair value 1,116,780 1,253,480
Warranty obligations:    
Current 0 0
Non-current 0 0
Total warranty obligations measured at fair value 0 0
Total liabilities measured at fair value 0 0
Recurring | Level 2 | Certificates of deposit    
Assets:    
Marketable securities 28,232 30,092
Recurring | Level 2 | Commercial paper    
Assets:    
Marketable securities 21,443 30,713
Recurring | Level 2 | Corporate notes and bonds    
Assets:    
Marketable securities 399,275 449,570
Recurring | Level 2 | U.S. Treasuries    
Assets:    
Marketable securities 88,525 111,612
Recurring | Level 2 | U.S. Government agency securities    
Assets:    
Marketable securities 579,305 631,493
Recurring | Level 2 | Money market funds    
Assets:    
Cash, cash equivalents and restricted cash 0 0
Recurring | Level 2 | Certificates of deposit    
Assets:    
Cash, cash equivalents and restricted cash 0 0
Recurring | Level 2 | Commercial paper    
Assets:    
Cash, cash equivalents and restricted cash 0 0
Recurring | Level 2 | Corporate notes and bonds    
Assets:    
Cash, cash equivalents and restricted cash 0 0
Recurring | Level 3    
Assets:    
Investments in debt securities 65,157 64,834
Investment in tax equity fund 5,190 0
Total assets measured at fair value 70,347 64,834
Warranty obligations:    
Current 26,200 27,173
Non-current 153,853 143,743
Total warranty obligations measured at fair value 180,053 170,916
Total liabilities measured at fair value 180,053 170,916
Recurring | Level 3 | Certificates of deposit    
Assets:    
Marketable securities 0 0
Recurring | Level 3 | Commercial paper    
Assets:    
Marketable securities 0 0
Recurring | Level 3 | Corporate notes and bonds    
Assets:    
Marketable securities 0 0
Recurring | Level 3 | U.S. Treasuries    
Assets:    
Marketable securities 0 0
Recurring | Level 3 | U.S. Government agency securities    
Assets:    
Marketable securities 0 0
Recurring | Level 3 | Money market funds    
Assets:    
Cash, cash equivalents and restricted cash 0 0
Recurring | Level 3 | Certificates of deposit    
Assets:    
Cash, cash equivalents and restricted cash 0 0
Recurring | Level 3 | Commercial paper    
Assets:    
Cash, cash equivalents and restricted cash 0 0
Recurring | Level 3 | Corporate notes and bonds    
Assets:    
Cash, cash equivalents and restricted cash $ 0 $ 0
v3.25.1
FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Jan. 31, 2025
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment in tax equity fund $ 6,900 $ 6,904 $ 0  
Deferred tax asset, tax equity fund   1,800    
Other income (expense), net   100    
Increase in liability as a result of increasing the profit element and risk premium input by 100 basis points   (1,300)    
Decrease in liability as a result of decreasing the profit element and risk premium input by 100 basis points   1,300    
Decrease in liability as a result of increasing the discount rate by 100 basis points   12,200    
Increase in liability as a result of decreasing the discount rate by 100 basis points   (13,700)    
Level 2 | Recurring        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Tax equity fund investment, fair value   0   $ 0
Level 2 | Recurring | Convertible Notes | Notes due 2028        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Notes payable fair value   487,400    
Level 2 | Recurring | Convertible Notes | Notes due 2026        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Notes payable fair value   601,300    
Level 3 | Recurring        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Tax equity fund investment, fair value   $ 5,190   $ 0
v3.25.1
FAIR VALUE MEASUREMENTS - Schedule of Debt Securities Schedule of Fair Value (Details) - Investments in debt securities - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance at beginning of period $ 64,834 $ 79,855
Fair value adjustments included in other income, net 323 942
Balance at end of period $ 65,157 $ 80,797
v3.25.1
FAIR VALUE MEASUREMENTS - Schedule of Changes in Nonfinancial Liabilities Related to Warrant Obligations Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Details) - Recurring - Total warranty obligations measured at fair value - Level 3 - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance at beginning of period $ 170,916 $ 161,793
Accruals for warranties issued during period 7,299 6,082
Changes in estimates 4,626 (12,018)
Settlements (4,898) (6,540)
Increase due to accretion expense 3,060 2,905
Other (950) (1,672)
Balance at end of period $ 180,053 $ 150,550
v3.25.1
FAIR VALUE MEASUREMENTS - Summary of Significant Unobservable Inputs used in the Fair Value Measurement of Liabilities Designated as Level 3 (Details) - Recurring - Level 3 - Warranty obligations for products sold since January 1, 2014
Mar. 31, 2025
Dec. 31, 2024
Profit element and risk premium    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warranty obligations, measurement input 17.50% 16.80%
Credit-adjusted risk-free rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warranty obligations, measurement input 7.20% 7.20%
v3.25.1
RESTRUCTURING AND ASSET IMPAIRMENT CHARGES - Restructuring And Asset Impairment Charges (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2025
USD ($)
Restructuring Cost and Reserve [Line Items]  
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] Charges
2024 Restructuring Plan  
Restructuring Cost and Reserve [Line Items]  
Restructuring and asset impairment charges $ 3,162
Employee severance and benefits | 2024 Restructuring Plan  
Restructuring Cost and Reserve [Line Items]  
Restructuring and asset impairment charges 3,371
Contract termination charges | 2024 Restructuring Plan  
Restructuring Cost and Reserve [Line Items]  
Restructuring and asset impairment charges (236)
Asset impairment | 2024 Restructuring Plan  
Restructuring Cost and Reserve [Line Items]  
Restructuring and asset impairment charges $ 27
v3.25.1
RESTRUCTURING AND ASSET IMPAIRMENT CHARGES - Rollforward (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Restructuring Reserve [Roll Forward]    
Restructuring reserve, beginning $ 3,262  
Charges 3,162 $ 1,907
Restructuring reserve, ending 3,250  
2024 Restructuring Plan    
Restructuring Reserve [Roll Forward]    
Restructuring reserve, beginning 2,986  
Charges 3,162  
Cash payments (2,635)  
Non-cash settlement and other (536)  
Restructuring reserve, ending 2,977  
Employee Severance and Benefits | 2024 Restructuring Plan    
Restructuring Reserve [Roll Forward]    
Restructuring reserve, beginning 2,220  
Charges 3,371  
Cash payments (2,634)  
Non-cash settlement and other (509)  
Restructuring reserve, ending 2,448  
Contract Termination Charges | 2024 Restructuring Plan    
Restructuring Reserve [Roll Forward]    
Restructuring reserve, beginning 766  
Charges (236)  
Cash payments (1)  
Non-cash settlement and other 0  
Restructuring reserve, ending 529  
Asset Impairment | 2024 Restructuring Plan    
Restructuring Reserve [Roll Forward]    
Restructuring reserve, beginning 0  
Charges 27  
Cash payments 0  
Non-cash settlement and other (27)  
Restructuring reserve, ending $ 0  
v3.25.1
DEBT - Schedule of Long-term debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Debt Instrument [Line Items]    
Total carrying amount of debt $ 1,201,891 $ 1,302,380
Less: debt, current (630,677) (101,291)
Debt, non-current 571,214 1,201,089
Convertible Notes | Notes due 2028    
Debt Instrument [Line Items]    
Long-term debt, gross 575,000 575,000
Less: unamortized debt issuance costs (3,786) (4,102)
Total carrying amount of debt 571,214 570,898
Convertible Notes | Notes due 2026    
Debt Instrument [Line Items]    
Long-term debt, gross 632,500 632,500
Less: unamortized debt issuance costs (1,823) (2,309)
Total carrying amount of debt 630,677 630,191
Convertible Notes | Notes due 2025    
Debt Instrument [Line Items]    
Long-term debt, gross 0 102,168
Less: unamortized debt discount 0 (803)
Less: unamortized debt issuance costs 0 (74)
Total carrying amount of debt $ 0 $ 101,291
v3.25.1
DEBT - Schedule of Interest Cost Recognized In Statements Of Operations (Details) - Convertible Notes - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Notes due 2028    
Debt Instrument [Line Items]    
Contractual interest expense $ 0 $ 0
Amortization of debt discount 0 0
Amortization of debt issuance costs 316 326
Total interest cost recognized 316 326
Notes due 2026    
Debt Instrument [Line Items]    
Contractual interest expense 0 0
Amortization of debt discount 0 0
Amortization of debt issuance costs 485 503
Total interest cost recognized 485 503
Notes due 2025    
Debt Instrument [Line Items]    
Contractual interest expense 43 64
Amortization of debt discount 803 1,177
Amortization of debt issuance costs 75 126
Total interest cost recognized $ 921 $ 1,367
v3.25.1
DEBT - Convertible Senior Notes due in 2028 Narrative (Details)
$ / shares in Units, $ in Thousands, shares in Millions
Mar. 01, 2021
USD ($)
tradingDay
$ / shares
shares
Mar. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Debt Instrument [Line Items]      
Principal amount outstanding   $ 1,201,891 $ 1,302,380
Convertible Notes | Notes due 2028      
Debt Instrument [Line Items]      
Debt instrument face amount $ 575,000    
Interest rate 0.00%    
Proceeds from convertible debt $ 566,400    
Conversion ratio 0.0035104    
Debt conversion price (in USD per share) | $ / shares $ 284.87    
Principal amount outstanding   571,214 570,898
Unamortized debt issuance costs   $ 3,786 $ 4,102
Conversion shares (in shares) | shares 2.0    
Payment for bonds hedge $ 161,600    
Warrants issued, strike price (in USD per share) | $ / shares $ 397.91    
Proceeds from sale of warrants $ 123,400    
Convertible Notes | Notes due 2028 | Period One      
Debt Instrument [Line Items]      
Threshold percentage 130.00%    
Stock trigger price (in USD per share) | $ / shares $ 370.33    
Number of threshold trading days | tradingDay 20    
Number of consecutive trading days | tradingDay 30    
Measurement period percentage of stock price trigger (as a percent) 98.00%    
Convertible Notes | Notes due 2028 | Period Two      
Debt Instrument [Line Items]      
Threshold percentage 100.00%    
Number of consecutive trading days | tradingDay 5    
Business day period after measurement period 5 days    
v3.25.1
DEBT - Convertible Senior Notes due in 2026 Narrative (Details)
$ / shares in Units, shares in Millions
Mar. 01, 2021
USD ($)
tradingDay
$ / shares
shares
Mar. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Mar. 12, 2021
USD ($)
Debt Instrument [Line Items]        
Principal amount outstanding   $ 1,201,891,000 $ 1,302,380,000  
Convertible Notes | Notes due 2026        
Debt Instrument [Line Items]        
Debt instrument face amount $ 575,000,000     $ 57,500,000
Interest rate 0.00%      
Proceeds from convertible debt $ 623,000,000      
Conversion ratio 0.0032523      
Debt conversion price (in USD per share) | $ / shares $ 307.47      
Principal amount outstanding   630,677,000 630,191,000  
Unamortized debt issuance costs   $ 1,823,000 $ 2,309,000  
Conversion shares (in shares) | shares 2.1      
Payment for bonds hedge $ 124,600,000      
Warrants issued, strike price (in USD per share) | $ / shares $ 397.91      
Proceeds from sale of warrants $ 97,400,000      
Convertible Notes | Notes due 2026 | Period One        
Debt Instrument [Line Items]        
Threshold percentage 130.00%      
Stock trigger price (in USD per share) | $ / shares $ 399.71      
Number of threshold trading days | tradingDay 20      
Number of consecutive trading days | tradingDay 30      
Measurement period percentage of stock price trigger (as a percent) 98.00%      
Convertible Notes | Notes due 2026 | Period Two        
Debt Instrument [Line Items]        
Threshold percentage 100.00%      
Number of consecutive trading days | tradingDay 5      
Business day period after measurement period 5 days      
v3.25.1
DEBT - Convertible Senior Notes due in 2025 Narrative (Details) - Convertible Notes - Notes due 2025 - USD ($)
$ / shares in Units, shares in Millions
Mar. 31, 2025
Mar. 09, 2020
Debt Instrument [Line Items]    
Interest rate 0.25%  
Debt instrument face amount $ 102,200,000  
Conversion shares (in shares)   3.9
Warrants issued, strike price (in USD per share)   $ 106.94
Warrants outstanding (in shares) 1.3  
v3.25.1
COMMITMENTS AND CONTINGENCIES - Narrative (Details)
$ in Millions
Mar. 31, 2025
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Term of lease contract, maximum renewal term 12 years
Purchase obligation $ 142.3
v3.25.1
COMMITMENTS AND CONTINGENCIES - Schedule of Lease Expense Components (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]    
Operating lease costs $ 2,817 $ 2,647
v3.25.1
COMMITMENTS AND CONTINGENCIES - Schedule of Lease Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]    
Operating lease, right of use asset, net (Other assets) $ 27,949 $ 24,617
Operating lease liabilities, current (Accrued liabilities) $ 6,154 $ 5,815
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Accrued Liabilities, Current Accrued Liabilities, Current
Operating lease liabilities, non-current (Other liabilities) $ 26,560 $ 23,044
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other Liabilities, Noncurrent Other Liabilities, Noncurrent
Total operating lease liabilities $ 32,714 $ 28,859
Weighted average remaining lease term 6 years 4 months 24 days 5 years 10 months 24 days
Weighted average discount rate 6.60% 6.70%
v3.25.1
COMMITMENTS AND CONTINGENCIES - Schedule of Supplemental Cash Flow and Other Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]    
Operating cash flows from operating leases $ 2,131 $ 1,905
Lease liabilities arising from obtaining right-of-use assets $ 7,260 $ 1,695
v3.25.1
COMMITMENTS AND CONTINGENCIES - Schedule of Minimum Lease Payments Under Noncancelable Operating Leases (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]    
2025 (remaining nine months) $ 6,125  
2026 7,768  
2027 5,408  
2028 4,432  
2029 4,378  
Thereafter 12,567  
Total lease payments 40,678  
Less: imputed lease interest (7,964)  
Less: imputed lease interest $ 32,714 $ 28,859
v3.25.1
STOCKHOLDERS' EQUITY (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Jul. 31, 2023
Equity, Class of Treasury Stock [Line Items]      
Repurchase program, remaining stock authorized for repurchase $ 298.7    
2023 Repurchase Program      
Equity, Class of Treasury Stock [Line Items]      
Repurchase program, shares authorized     $ 1,000.0
Stock repurchased and retired during period (in shares) 1,594,105 332,735  
Average cost, shares repurchased (in usd per share) $ 62.71 $ 126.21  
Repurchase of common stock $ 100.0 $ 42.0  
v3.25.1
STOCK-BASED COMPENSATION - Narrative (Details)
$ in Millions
3 Months Ended
Mar. 31, 2025
USD ($)
Share-Based Payment Arrangement [Abstract]  
Total unrecognized compensation cost $ 376.4
Weighted-average recognition period for unrecognized compensation cost 2 years 2 months 12 days
v3.25.1
STOCK-BASED COMPENSATION - Schedule of Stock-based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense $ 55,633 $ 60,833
Cost of revenues    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense 4,239 4,182
Research and development    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense 21,647 24,550
Sales and marketing    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense 16,396 18,178
General and administrative    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense 12,842 13,923
Restructuring    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense $ 509 $ 0
v3.25.1
STOCK-BASED COMPENSATION - Schedule of Stock-Based Compensation Expense Associated with Each Type of Award (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense $ 55,633 $ 60,833
RSUs and PSUs    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense 54,176 58,787
ESPP    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense $ 1,457 $ 2,046
v3.25.1
STOCK-BASED COMPENSATION - Schedule of Restricted Stock Unit Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Aggregate Intrinsic Value    
Share price (in usd per share) $ 62.05  
Restricted stock units    
Number of Shares Outstanding    
Outstanding, beginning balance (in shares) 2,283  
Granted (in shares) 615  
Vested (in shares) (357)  
Canceled (in shares) (158)  
Outstanding, ending balance (in shares) 2,383  
Number of shares outstanding, expected to vest (in shares) 2,374  
Weighted- Average Fair Value per Share at Grant Date    
Outstanding, beginning balance (in usd per share) $ 139.27  
Granted (in usd per share) 65.27  
Vested (in usd per share) 153.03  
Canceled (in usd per share) 140.43  
Outstanding, ending balance (in usd per share) 118.04  
Weighted-average fair value per share at grant date, expected to vest (in usd per share) $ 117.79  
Weighted- Average Remaining Contractual Term    
Outstanding 1 year 6 months  
Expected to vest 1 year 6 months  
Aggregate Intrinsic Value    
Outstanding $ 147,824
Vested 21,716  
Aggregate intrinsic value, expected to vest $ 147,334  
v3.25.1
STOCK-BASED COMPENSATION - Schedule of Performance Stock Unit Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Aggregate Intrinsic Value    
Share price (in usd per share) $ 62.05  
Performance shares    
Number of Shares Outstanding    
Outstanding, beginning balance (in shares) 899  
Granted (in shares) 1,128  
Vested (in shares) (175)  
Canceled (in shares) (197)  
Outstanding, ending balance (in shares) 1,655  
Expected to vest (in shares) 1,655  
Weighted- Average Fair Value per Share at Grant Date    
Outstanding, beginning balance (in usd per share) $ 154.67  
Granted (in usd per share) 77.71  
Vested (in usd per share) 110.20  
Canceled (in usd per share) 118.43  
Outstanding, ending balance (in usd per share) 111.23  
Weighted-average fair value per share at grant date, expected to vest (in usd per share) $ 111.23  
Weighted- Average Remaining Contractual Term    
Outstanding 1 year 9 months 18 days  
Expected to vest 1 year 9 months 18 days  
Aggregate Intrinsic Value    
Outstanding $ 102,672
Vested 10,017  
Aggregate intrinsic value, expected to vest $ 102,672  
v3.25.1
INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Income Tax Disclosure [Abstract]    
Income tax provision $ 17,163 $ 4,598
Net income before income taxes $ 46,893 $ (11,499)
v3.25.1
NET INCOME (LOSS) PER SHARE - Schedule of Computation of Basic and Diluted Net Income Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Numerator:    
Net income (loss) $ 29,730 $ (16,097)
Adjusted net income (loss) $ 30,335 $ (16,097)
Denominator:    
Weighted average common shares outstanding (in shares) 131,869 135,891
Employee stock-based awards (in shares) 264 0
Weighted average common shares outstanding for diluted calculation (in shares) 136,208 135,891
Basic and diluted net income (loss) per share    
Net income (loss) per share, basic (in usd per share) $ 0.23 $ (0.12)
Net income (loss) per share, diluted (in usd per share) $ 0.22 $ (0.12)
Notes due 2028 and 2026    
Numerator:    
Convertible senior notes interest and financing costs, net of tax $ 605 $ 0
Convertible Notes | Notes due 2026    
Denominator:    
Notes due (in shares) 2,057 0
Convertible Notes | Notes due 2028    
Denominator:    
Notes due (in shares) 2,018 0
v3.25.1
NET INCOME (LOSS) PER SHARE - Schedule of Potentially Dilutive Securities Excluded from the Computation of Diluted Net Income Per Share (Details) - shares
shares in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities (in shares) 24,948 16,807
Employee stock-based awards    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities (in shares) 3,071 1,656
Notes due | Notes due 2025    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities (in shares) 323 1,253
Notes due | 2026 Warrants    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities (in shares) 0 2,057
Notes due | 2028 Warrants    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities (in shares) 0 2,018
Warrants | 2026 Warrants    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities (in shares) 10,879 4,958
Warrants | 2028 Warrants    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities (in shares) 10,675 4,865
v3.25.1
SEGMENT INFORMATION - Narrative (Details)
3 Months Ended
Mar. 31, 2025
segment
Segment Reporting [Abstract]  
Number of reportable segments 1
Number of operating segments 1
v3.25.1
SEGMENT INFORMATION - Schedule of Measure of Segment Profit or Loss (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net revenues $ 356,084 $ 263,339
Stock-based compensation expense 55,633 60,833
Income (loss) from operations 31,922 (29,099)
Total other income, net 14,971 17,600
Income (loss) before income taxes 46,893 (11,499)
Income tax provision (17,163) (4,598)
Net income (loss) 29,730 (16,097)
Reportable Segment    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net revenues 356,084 263,339
Other cost of revenues 219,882 155,493
Income-based government grants (53,631) (18,617)
Incremental cost for manufacturing in the United States 15,773 4,882
Stock-based compensation expense 55,633 60,833
Acquisition related amortization 4,429 5,353
Other restructuring and asset impairment charges 2,653 1,907
Other research and development 28,527 29,661
Other sales and marketing 29,703 31,667
Other general and administrative 21,193 21,259
Income (loss) from operations 31,922 (29,099)
Total other income, net 14,971 17,600
Income (loss) before income taxes 46,893 (11,499)
Income tax provision (17,163) (4,598)
Net income (loss) $ 29,730 $ (16,097)

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