Form 10-Q - Quarterly report [Sections 13 or 15(d)]

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☒	Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended March 31, 2024.

☐	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 001-40023

GT BIOPHARMA, INC.

(Exact name of registrant as specified in its charter)

Delaware

94-1620407

(State or other jurisdiction of

incorporation or organization)

(I.R.S. Employer

Identification Number)

8000 Marina Blvd, Suite 100

Brisbane, CA 94005

(Address of principal executive offices and zip code)

415-919-4040

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class		Trading Symbol		Name of exchange on which registered
Common Stock, $0.001 par value per share		GTBP		Nasdaq Capital 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 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 May 15, 2024, the registrant had 1,416,651 shares of common stock outstanding.

GT Biopharma, Inc. and Subsidiaries

FORM 10-Q

For the Three Months Ended March 31, 2024

Table of Contents

		Page
PART I FINANCIAL INFORMATION
Item 1.	Financial Statements
	Condensed Consolidated Balance Sheets as of March 31, 2024 (Unaudited) and December 31, 2023	3
	Condensed Consolidated Statements of Operations for the three months ended March 31, 2024 and 2023 (Unaudited)	4
	Condensed Consolidated Statements of Stockholders’ Equity for the three months ended March 31, 2024 and 2023 (Unaudited)	5
	Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2024 and 2023 (Unaudited)	6
	Condensed Notes to Consolidated Financial Statements (Unaudited)	7
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	19
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	26
Item 4.	Controls and Procedures	26

PART II OTHER INFORMATION
Item 1.	Legal Proceedings	27
Item 6.	Exhibits	28

SIGNATURES		30

GT BIOPHARMA, INC. AND SUBSIDIARIES

Condensed Consolidated Balance Sheets

(in thousands, except shares and par value)

	March 31, 2024			December 31, 2023
	(Unaudited)
ASSETS
Current assets
Cash and cash equivalents	$	1,950		$	1,079
Short-term investments		7,857			12,893
Prepaid expenses and other current assets		78			84
Total Current Assets		9,885			14,056

Operating lease right-of-use asset		27			53
TOTAL ASSETS	$	9,912		$	14,109

LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities
Accounts payable	$	3,213		$	4,328
Accrued expenses		963			1,195
Current operating lease liability		30			58
Warrant liability		394			1,052
Total Current Liabilities		4,600			6,633

Total Liabilities	$	4,600		$	6,633

Stockholders’ Equity
Convertible Preferred stock, par value $0.01, 15,000,000 shares authorized Series C - 96,230 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively		1			1
Common stock, par value $0.001, 250,000,000 shares authorized, 1,380,633 shares issued and outstanding as of March 31, 2024 and December 31, 2023, respectively		1			1
Additional paid in capital		689,641			689,539
Accumulated deficit		(684,331	)		(682,065	)
Total Stockholders’ Equity		5,312			7,476
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	9,912		$	14,109

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

GT BIOPHARMA, INC. AND SUBSIDIARIES

Condensed Consolidated Statements of Operations

(in thousands, except per share data)

	2024			2023
	For The Three Months Ended
	March 31,
	2024			2023
	(unaudited)			(unaudited)

Revenues	$	-		$	-

Operating Expenses:
Research and development		777			1,650

Selling, general and administrative (including $102 and $718 from stock compensation granted to officers, directors and employees during the three months ended March 31, 2024 and 2023, respectively)		2,314			2,015

Loss from Operations		3,091			3,665

Other (Income) Expense
Interest income		(142	)		(164	)
Interest expense		-			212
Change in fair value of warrant liability		(658	)		(2,924	)
Gain on extinguishment of debt		-			(533	)
Unrealized loss (gain) on marketable securities		2			(29	)
Other		(27	)		-
Total Other (Income) Expense		(825	)		(3,438	)

Net Loss	$	(2,266	)	$	(227	)

Net Loss Per Share - Basic and Diluted	$	(1.64	)	$	(0.21	)

Weighted average common shares outstanding - basic and diluted		1,380,633			1,082,871

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

GT BIOPHARMA, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(in thousands)

	Shares		Amount		Shares		Amount		Capital		Deficit			Total
For The Three Months Ended March 31, 2024 (Unaudited)
	Preferred Shares				Common Shares				Additional Paid in		Accumulated
	Shares		Amount		Shares		Amount		Capital		Deficit			Total

Balance, December 31, 2023		96	$	1		1,381	$	1	$	689,539	$	(682,065	)	$	7,476

Fair value of vested stock options		-		-		-		-		102		-			102

Net loss		-		-		-		-		-		(2,266	)		(2,266	)

Balance, March 31, 2024		96	$	1		1,381	$	1	$	689,641	$	(684,331	)	$	5,312

For The Three Months Ended March 31, 2023 (Unaudited)
	Preferred Shares				Common Shares				Additional Paid in			Accumulated
	Shares		Amount		Shares		Amount		Capital			Deficit			Total

Balance, December 31, 2022		96	$	1		1,091	$	1	$	686,200		$	(674,468	)	$	11,734
Balance		96	$	1		1,091	$	1	$	686,200		$	(674,468	)	$	11,734

Private placement of common stock		-		-		120		-		6,268			-			6,268

Initial recognition of fair value of warrant liability		-		-		-		-		(5,831	)		-			(5,831	)

Fair value of vested stock options		-		-		-		-		507			-			507

Issuance of common shares for services		-		-		2		-		315			-			315

Issuance of common shares in settlement of vendors payable		-		-		16		-		287			-			287

Net loss		-		-		-		-		-			(227	)		(227	)

Balance, March 31, 2023		96	$	1		1,229	$	1	$	687,746		$	(674,695	)	$	13,053
Balance		96	$	1		1,229	$	1	$	687,746		$	(674,695	)	$	13,053

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

GT BIOPHARMA, INC. AND SUBSIDIARIES

Condensed Consolidated Statements of Cash Flows

(in thousands)

	2024			2023
	For The Three Months Ended
	March 31,
	2024			2023
	(Unaudited)			(Unaudited)
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$	(2,266	)	$	(227	)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock based compensation - services		-			176
Stock based compensation - officers, employees and board of directors		102			646
Change in fair value of warrant liability		(658	)		(2,924	)
Gain on extinguishment of share settled debt		-			(533	)
Change in operating lease right-of-use assets		26			25
Unrealized loss (gain) on marketable securities		2			(29	)
Changes in operating assets and liabilities:
Decrease in prepaid expenses		6			16
(Decrease) in accounts payable and accrued expenses		(1,347	)		(29	)
(Decrease) in operating lease liability		(28	)		(27	)
Net Cash Used in Operating Activities		(4,163	)		(2,906	)

CASH FLOWS FROM INVESTING ACTIVITIES
Sale (purchase) of investments		5,034			(6,989	)
Net Cash Provided by (Used in) Investing Activities		5,034			(6,989	)

CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from issuance of common stock and prefunded warrants		-			6,268
Net Cash Provided by Financing Activities		-			6,268

Net Increase (Decrease) in Cash		871			(3,627	)
Cash at Beginning of Period		1,079			5,672
Cash at End of Period	$	1,950		$	2,045

SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the year for:
Interest	$	-		$	-
Income taxes	$	-		$	-

SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Initial recognition of fair value of warrant liability	$	-		$	5,831
Fair value of common stock issued to a vendor to settle accounts payable	$	-		$	287

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

GT BIOPHARMA, INC. AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

March 31, 2024 and 2023

Note 1 – Organization and Operations

The corporate predecessor of GT Biopharma, Inc, Diagnostic Data, Inc., was incorporated in the state of California in 1965. Diagnostic Data, Inc. changed its incorporation to the state of Delaware on December 21, 1972 and changed its name to DDI Pharmaceuticals, Inc. on March 11, 1985. On September 7, 1994, DDI Pharmaceuticals, Inc. merged with International BioClinical, Inc. and Bioxytech S.A. and changed its name to OXIS International, Inc. On July 17, 2017, OXIS International, Inc. changed its name to GT Biopharma, Inc. (the “Company”).

The Company is a clinical stage biopharmaceutical company focused on the development and commercialization of novel immune-oncology products based on our proprietary Tri-specific Killer Engager (TriKE®), and Tetra-specific Killer Engager (Dual Targeting TriKE®) platforms. The Company’s TriKE® and Dual Targeting TriKE® platforms generate proprietary therapeutics designed to harness and enhance the cancer killing abilities of a patient’s own natural killer cells (NK cells).

Reverse Stock Split

On February 1, 2024, the Company announced a reverse stock-split of its common stock, par value $0.001 per share, at a ratio of 1 for 30. The reverse stock-split became effective on February 2, 2024. The Company’s common stock began trading on a reverse stock-split-adjusted basis on The Nasdaq Capital Market on February 5, 2024 under the existing trading symbol “GTBP.”

As a result of the reverse stock-split, every thirty (30) shares of issued and outstanding common stock were automatically combined into one issued and outstanding share of common stock, without any change in the par value per share. No fractional shares will be issued in connection with the reverse stock split. Stockholders who otherwise would be entitled to receive fractional shares of common stock will be entitled to receive their pro-rata portion of the net proceeds obtained from the aggregation and sale by the exchange agent of the fractional shares resulting from the reverse stock-split (reduced by any customary brokerage fees, commission and other expenses). The reverse stock split reduced the number of shares of common stock outstanding on the effective date of the reverse stock-split from 41,419,000 shares to 1,380,633 shares, subject to minor adjustments due to the treatment of fractional shares. The number of authorized shares of common stock remains unchanged at 250,000,000 shares.

Proportionate adjustments will be made to the per share exercise price and the number of shares of common stock that may be purchased upon exercise of outstanding stock options for the Company’s common stock and to the number of shares of common stock reserved for future issuance pursuant to the GT Biopharma, Inc. 2022 Omnibus Incentive Plan.

All share and per share information within this report have been adjusted to retroactively reflect the reverse stock-split as of the earliest period presented.

Note 2 – Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, Oxis Biotech, Inc. and Georgetown Translational Pharmaceuticals, Inc. All intercompany transactions and balances have been eliminated in consolidation.

The accompanying condensed consolidated financial statements are unaudited. These unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2023 filed with the SEC on March 26, 2024 (the “2023 Annual Report”). The consolidated balance sheet as of December 31, 2023 included herein, was derived from the audited consolidated financial statements as of that date.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments necessary to fairly present the Company’s financial position and results of operations for the interim periods reflected. Except as noted, all adjustments contained herein are of a normal recurring nature. Results of operations for the fiscal periods presented herein are not necessarily indicative of fiscal year-end results.

Liquidity

The accompanying condensed consolidated financial statements have been prepared under the assumption that the Company will continue as a going concern. Such assumption contemplates the realization of assets and satisfaction of liabilities in the normal course of business. For the three months ended March 31, 2024, the Company recorded a net loss of $2.3 million and used cash in operations of $4.2 million. As of March 31, 2024, the Company had a cash and short-term investments balance of $9.8 million, working capital of $5.3 million and stockholders’ equity of $5.3 million. Management anticipates that the $9.8 million of cash and cash equivalents and short-term investments are adequate to satisfy the liquidity needs of the Company for at least one year from the date the Company’s condensed consolidated financial statements for the three months ended March 31, 2024 were issued.

Historically, the Company has financed its operations through public and private sales of common stock, issuance of preferred and common stock, issuance of convertible debt instruments, and strategic collaborations. There can be no assurances that the Company will be able to secure additional financing on acceptable terms. In the event the Company does not generate sufficient cash flows from investing and financing activities, the Company will be forced to delay, reduce, or eliminate some or all of its discretionary spending, which could adversely affect the Company’s business prospects, ability to meet long-term liquidity needs or ability to continue operations.

Accounting Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant estimates include management’s estimates for continued liquidity, accruals for potential liabilities, assumptions used in deriving the fair value of derivative liabilities, valuation of equity instruments issued for services and realization of deferred tax assets. Actual results could differ from those estimates.

Cash Equivalents and Short-Term Investments

The Company considers highly liquid investments with maturities of three months or less at the date of acquisition as cash equivalents in the accompanying condensed consolidated financial statements. Total cash equivalents, which consist of money market funds, amounted to approximately $1.8 million and $443,000 at March 31, 2024 and December 31, 2023, respectively.

The Company also invested its excess cash in commercial paper and corporate notes and bonds. Management generally determines the appropriate classification of its investments at the time of purchase. We classify these investments as short-term investments, as part of current assets, based upon our ability and intent to use any and all of these investments as necessary to satisfy liquidity requirements that may arise from our business. Investments are carried at fair value with the unrealized holding gains and losses reported in the accompanying condensed consolidated statements of operations. Total short-term investments amounted to approximately $7.9 million and $12.9 million at March 31, 2024 and December 31, 2023, respectively.

Fair Value of Financial Instruments

Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 820-10 requires entities to disclose the fair value of financial instruments, both assets and liabilities recognized and not recognized on the balance sheet for which it is practicable to estimate fair value. ASC 820-10 defines the fair value of a financial instrument as the amount at which the instrument could be exchanged in a current transaction between willing parties.

The three levels of the fair value hierarchy are as follows:

Level 1 Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that the entity has the ability to access.

Level 2 Valuations based on quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable data for substantially the full term of the assets or liabilities.

Level 3 Valuations based on inputs that are unobservable, supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

The carrying amount of the Company’s warrant liability of $394,000 and $1.1 million at March 31, 2024 and December 31, 2023, respectively, was based on Level 3 measurements.

The carrying amounts of the Company’s other financial assets and liabilities, such as cash and cash equivalents, short term investments, prepaid expenses and other current assets, accounts payable, accrued expenses, approximate their fair values because of the short maturity of these instruments.

Warrant Liability

The Company evaluates its financial instruments to determine if such instruments are derivatives or contain features that qualify as embedded derivatives in accordance with ASC Topic 815, “Derivatives and Hedging” (“ASC 815”). For derivative financial instruments that are accounted for as liabilities, the derivative instrument is initially recorded at its fair value and is then re-valued at each reporting date, with changes in the fair value reported in the statements of operations.

The Company’s use of derivative financial instruments is generally limited to warrants issued by the Company that do not meet the criteria for equity treatment and are recorded as liabilities. We do not use financial instruments or derivatives for any trading purposes.

Stock-Based Compensation

The Company periodically issues stock-based compensation to officers, directors, employees and consultants for services rendered. Such issuances vest and expire according to terms established at the issuance date.

Stock-based payments to officers, directors, employees and consultants for acquiring goods and services from non-employees, which include grants of employee stock options, are recognized in the financial statements based on their grant date fair values in accordance with ASC 718, Compensation-Stock Compensation. Stock based payments to officers, directors, employees and consultants, which are generally time vested, are measured at the grant date fair value and depending on the conditions associated with the vesting of the award, compensation cost is recognized on a straight-line or graded basis over the vesting period. Recognition of compensation expense for non-employees is in the same period and manner as if the Company had paid cash for the services. The fair value of stock options granted is estimated using the Black-Scholes option-pricing model, which uses certain assumptions related to risk-free interest rates, expected volatility, expected life, and future dividends. The assumptions used in the Black-Scholes option pricing model could materially affect compensation expense recorded in future periods.

Research and Development Costs

Costs incurred for research and development are expensed as incurred. The salaries, benefits, and overhead costs of personnel conducting research and development of the Company’s products are included in research and development expenses. Purchased materials that do not have an alternative future use are also expensed.

Leases

The Company accounts for its lease in accordance with the guidance of ASC 842, Leases. The Company determines whether a contract is, or contains, a lease at inception. Right-of-use assets represent the Company’s right to use an underlying asset during the lease term, and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. Right-of-use assets and lease liabilities are recognized at lease commencement based upon the estimated present value of unpaid lease payments over the lease term. The Company uses its incremental borrowing rate based on the information available at lease commencement in determining the present value of unpaid lease payments.

Net Loss Per Share

Basic earnings (loss) per share is computed using the weighted-average number of common shares outstanding during the period. Diluted earnings (loss) per share is computed using the weighted-average number of common shares and the dilutive effect of contingent shares outstanding during the period. Potentially dilutive contingent shares, which primarily consist of stock issuable upon exercise of stock options and warrants have been excluded from the diluted loss per share calculation because their effect is anti-dilutive.

The following common stock equivalents were excluded in the computation of the net loss per share because their effect is anti-dilutive:

Schedule of Anti-dilutive Securities

	March 31, 2024 (Unaudited)		March 31, 2023 (Unaudited)
Options to purchase common stock		126,265		115,598
Warrants to purchase common stock		304,962		304,962
Total anti-dilutive securities		431,227		420,560

Concentration

Cash is deposited in one financial institution. The balances held at this financial institution at times may be in excess of Federal Deposit Insurance Corporation (“FDIC”) insurance limits of up to $250,000. Management believes that the financial institutions that hold the Company’s cash are financially sound and, accordingly, minimal credit risk exists.

The Company has a significant concentration of expenses incurred and accounts payable from a single vendor, see Note 4 – Accounts Payable.

Segments

The Company determined its reporting units in accordance with “Segment Reporting” (“ASC 280”). Management evaluates a reporting unit by first identifying its operating segments under ASC 280. The Company then evaluates each operating segment to determine if it includes one or more components that constitute a business. If there are components within an operating segment that meet the definition of a business, the Company evaluates those components to determine if they must be aggregated into one or more reporting units. If applicable, when determining if it is appropriate to aggregate different operating segments, the Company determines if the segments are economically similar and, if so, the operating segments are aggregated.

Management has determined that the Company has one consolidated operating segment. The Company’s reporting segment reflects the manner in which its chief operating decision maker reviews results and allocates resources. The Company’s reporting segment meets the definition of an operating segment and does not include the aggregation of multiple operating segments.

Recent Accounting Pronouncements

In November 2023, the FASB issued ASU No. 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures” (“ASU 2023-07”), which introduces new reportable segment disclosure requirements related to significant segment expenses and also expands reportable segment disclosure requirements for interim reporting. The amendment will require public entities to disclose significant segment expenses that are regularly provided to the chief operating decision maker and are included within each reportable segment’s profits and losses. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. We are in the process of evaluating the impact that ASU 2023-07 will have on our segment related disclosures.

The Company’s management has evaluated all the recently issued, but not yet effective, accounting standards and guidance that have been issued or proposed by the FASB or other standards-setting bodies through the filing date of these financial statements and does not believe the future adoption of any such pronouncements will have a material effect on the Company’s financial position and results of operations.

Note 3 – Fair Value of Financial Instruments

The estimated fair values of financial instruments outstanding were as follows (in thousands):

	March 31, 2024 (Unaudited)
			Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
Short-term investments	$	7,859	$	—	$	(2	)	$	7,857
Total	$	7,859	$	—	$	(2	)	$	7,857

	December 31, 2023
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
Short-term investments	$	12,845	$	48	$	—	$	12,893
Total	$	12,845	$	48	$	—	$	12,893

The following table represents the Company’s fair value hierarchy for its financial assets (cash equivalents and investments) (in thousands):

	Fair Value		Level 1		Level 2		Level 3
	March 31, 2024 (Unaudited)
	Fair Value		Level 1		Level 2		Level 3
Money market funds	$	1,845	$	1,845	$	—	$	—
Corporate notes and commercial paper		7,857		—		7,857		—
Total financial assets	$	9,702	$	1,845	$	7,857	$	—

	Fair Value		Level 1		Level 2		Level 3
	December 31, 2023
	Fair Value		Level 1		Level 2		Level 3
Money market funds	$	443	$	443	$	—	$	—
Corporate notes and commercial paper		12,893		—		12,893		—
Total financial assets	$	13,336	$	443	$	12,893	$	—

As of March 31, 2024, the fair value of the warrant liability was $394,000. The details of warrant liability transactions for the three months ended March 31, 2024 and 2023, were as follows (in thousands):

	March 31, 2024			March 31, 2023
	Three Months Ending
	March 31, 2024			March 31, 2023
	(Unaudited)			(Unaudited)
Beginning balance	$	1,052		$	19
Issuance of warrants at fair value		—			5,831
Change in fair value		(658	)		(2,924	)
Extinguishment		—			—
Ending balance	$	394		$	2,926

Note 4 – Accounts Payable

Accounts payable consisted of the following (in thousands):

Schedule of Accounts Payable

	March 31, 2024		December 31, 2023
	(Unaudited)
Accounts payable to a third-party manufacturer	$	1,983	$	3,515
Other accounts payable		1,230		813
Total accounts payable	$	3,213	$	4,328

The Company relies on a third-party contract manufacturing operation to produce and/or test our compounds used in our potential product candidates.

In October 2020, the Company entered into a Master Services Agreement with a third-party product manufacturer to perform biologic development and manufacturing services on behalf of the Company. Associated with this, the Company has subsequently executed a number of Statements of Work for the research and development of products for use in clinical trials. The Company’s commitments in relation to these SOWs and any related Change Orders totaled approximately $15.6 million.

On August 24, 2022, existing agreements with the third-party product manufacturer were amended. As part of the amendment, the third-party manufacturer agreed that services to be rendered in future periods, will be paid or settled at the Company’s discretion, in a combination of cash and issuance of the Company’s common stock. The amendment also eliminated future financial commitments of the Company. As of December 31, 2023, outstanding accounts payable balance to the third-party product manufacturer amounted to $3.5 million.

During the three months ended March 31, 2024, the Company recorded research and development expenses of $268,000 to account for services rendered by the third-party product manufacturer. In addition, the Company paid cash of $1.8 million towards the payment of accounts payable. As of March 31, 2024, the outstanding balance due to the third-party product manufacturer amounted to $2.0 million.

Note 5 – Warrant Liability

2023 Warrants

On January 4, 2023, as part of the private placement offering, the Company issued common stock, warrants to purchase up to an aggregate of 216,667 shares of the Company’s common stock (the “Common Warrants”), and placement agent warrants to purchase up to 13,000 shares of the Company’s common stock (the “Placement Agents Warrants” see Note 6 - Stockholders’ Equity.

The Purchase Warrant provides for a value calculation for the Purchase Warrant using the Black Scholes model in the event of certain fundamental transactions. The fair value calculation provides for a floor on the volatility amount utilized in the value calculation at 100% or greater. The Company has determined this provision introduces leverage to the holders of the Purchase Warrant that could result in a value that would be greater than the settlement amount of a fixed-for-fixed option on the Company’s own equity shares. Therefore, pursuant to ASC 815, the Company has classified the Purchase Warrant as a liability in its consolidated balance sheet. The classification of the Purchase Warrant, including whether the Purchase Warrant should be recorded as liability or as equity, is evaluated at the end of each reporting period with changes in the fair value reported in other income (expense) in the consolidated statements of operations and comprehensive loss. The Purchase Warrant was initially recorded at a fair value at $5.8 million at the grant date and is re-valued at each reporting date. Upon the closing of placement, the fair value of the Purchase Warrant liability was recorded as a cost of capital.

As of March 31, 2024, the fair value of the warrant liability was reduced to $393,000.

All changes in the fair value of the warrant liabilities are recognized as a change in fair value of warrant liability in the Company’s condensed consolidated statements of operations until they are either exercised or expire.

The warrant liabilities for the Common Warrants and the Placement Agents Warrants were valued using a Binomial pricing model with the following assumptions:

	Common Warrants and Placement Agents Warrants
	March 31, 2024			December 31, 2023
	(Unaudited)			(Unaudited)
Stock price	$	4.43		$	7.80
Risk-free interest rate		4.21	%		4.26	%
Expected volatility		103.9	%		115.2	%
Expected average life (in years)		4.0			4.25
Expected dividend yield		-			-
Fair value of warrants (in thousands)	$	393		$	1,050

2020 Warrants

The Company issued certain warrants during the year ended December 31, 2020 that contained a fundamental transaction provision that could give rise to an obligation to pay cash to the warrant holder upon occurrence of certain change in control type events. In accordance with ASC 480, the fair value of these warrants is classified as a liability in the Condensed Consolidated Balance Sheets and will be re-measured at the end of every reporting period with the change in value reported in the Condensed Consolidated Statements of Operations.

The warrant liabilities for the 2020 warrants were valued using a Binomial pricing model with the following assumptions:

	March 31, 2024			December 31, 2023
	(Unaudited)
Stock price	$	4.43		$	7.80
Risk-free interest rate		4.21	%		4.54	%
Expected volatility		89	%		89	%
Expected life (in years)		1.2			1.6
Expected dividend yield		-			-

Fair value of warrants (in thousands)	$	1		$	2

The risk-free interest rate was based on rates established by the Federal Reserve Bank. The Company uses the historical volatility of its common stock to estimate the future volatility for its common stock. The expected life of the derivative securities was determined by the remaining contractual life of the derivative instrument. For derivative instruments that already matured, the Company used the estimated life. The expected dividend yield was based on the fact that the Company has not paid dividends to its common stockholders in the past and does not expect to pay dividends to its common stockholders in the future.

The Company recognized a gain of $658,000 and $2.9 million to account for the change in fair value of the warrant liability related to all warrants between the reporting periods for the three months ended March 31, 2024 and 2023, respectively.

Note 6 – Stockholders’ Equity

The Company’s authorized capital as of March 31, 2024 was 250,000,000 shares of common stock, par value $0.001 per share, and 15,000,000 shares of preferred stock, par value $0.01 per share.

Common Stock

Private Placement of Common Stock

On January 4, 2023, GT Biopharma received gross proceeds of $6.5 million, before deducting placement agent fees and other offering expenses of $232,000 in relation to a purchase agreement (the “Purchase Agreement”) signed on December 30, 2022, between the Company and an institutional investor (the “Purchaser”) for the issuance and sale, in a registered direct offering (the “Offering”), of 120,000 shares of the Company’s common stock, par value $0.001 per share (the “Shares”), pre-funded warrants to purchase up to 96,667 shares of the Company’s common stock (the “Pre-Funded Warrants”), warrants to purchase up to an aggregate of 216,667 shares of the Company’s common stock (the “Common Warrants”) and placement agent warrants to purchase up to 13,000 of the Company’s common stock (the “Placement Agents Warrants”). The Common Warrants have an exercise price equal to $30.00, became exercisable commencing six months following issuance, and shall have a term of exercise equal to five years following the initial exercise date. The Pre-Funded Warrants had an exercise price of $0.003 per Share, were immediately exercisable and could be exercised at any time after their original issuance until such Pre-Funded Warrants were exercised in full. The Placement Agents Warrants have an exercise price equal to $37.50, exercisable commencing six months following issuance, and shall have a term of exercise equal to five years following the initial exercise date. The Shares and Common Warrants were sold at an offering price of $30.00 per Share and accompanying Common Warrant and the Pre-Funded Warrants and Common Warrants were sold at an offering price of $29.997 per Pre-Funded Warrant and accompanying Common Warrant.

The Common Warrants and the Placement Agents Warrants contained a clause not considered to be within the Company’s control. The Company determined that the provision represented a variable that is not an input to the fair value of a “fixed-for-fixed” option as defined under ASC 815-40, and thus the Common Warrants and the Placement Agent Warrants are not considered indexed to the Company’s own stock and not eligible for an exception from derivative accounting. Accordingly, the Common Warrants and the Placement Agent Warrants were classified as a warrant liability, and $5.8 million of the initial common stock offering was classified as a warrant liability (Note 5 – Warrant Liability).

Common Stock Issued for Services

During the three months ended March 31, 2023, and pursuant to the vesting term of a 2021 agreement, the Company issued 2,449 shares of common stock with a fair value of $315,000 to members of the Board of Directors, employees and consultants. The shares were valued at the respective date of the agreements.

Common Stock Issued for Vendor Payable

On March 13, 2023, the Company issued 16,228 shares of common stock with a fair value of $287,000 as settlement of accounts payable of $820,000. As a result, the Company recognized a gain of $533,000 to account the difference between the fair value of the common stock issued and the accounts payable settled.

Preferred Stock

Series C Preferred Stock

At March 31, 2024 and December 31, 2023, there were 96,230 shares of series C preferred stock, par value $0.01 per share (the “Series C Preferred Stock”) issued and outstanding.

As a result of reverse stock splits in previous years and the agreement terms for adjusting the rights of the related shares, the 96,230 shares of Series C Preferred Stock are not currently convertible, have no voting rights, and in the event of liquidation, the holders of the Series C Preferred Stock would not participate in any distribution of the assets or surplus funds of the Company. The holders of Series C Preferred Stock also are not currently entitled to any dividends if and when declared by the Company’s board of directors (the “Board”). No dividends to holders of the Series C Preferred Stock were declared or unpaid through March 31, 2024 and 2023, respectively.

Series K Preferred Stock

On February 16, 2021, the Board designated 115,000 shares of Series K preferred stock, par value $.01 (the “Series K Preferred Stock”).

Shares of the Series K Preferred Stock are convertible at any time, at the option of the holders, into shares of the Company’s common stock at an effective conversion rate of 100 shares of common stock for each share of Series K Preferred. Shares of the Series K Preferred Stock have the same voting rights as the shares of the Company’s common stock, with the holders of the Series K Preferred Stock entitled to vote on an as-converted-to-common stock basis, subject to the beneficial ownership limitation, together with the holders of the Company’s common stock on all matters presented to the Company’s stockholders. The Series K Preferred Stock are not entitled to any dividends (unless specifically declared by the Board) but will participate on an as-converted-to-common-stock basis in any dividends to the holders of the Company’s common stock. In the event of the Company’s dissolution, liquidation or winding up, the holders of the Series K Preferred Stock will be on parity with the holders of the Company’s common stock and will participate, on a on an as-converted-to-common stock basis, in any distribution to holders of the Company’s common stock.

As of March 31, 2024 and December 31, 2023, there were no shares of Series K Preferred stock issued and outstanding.

Warrants and Options

Common Stock Warrants

Stock warrant transactions for the three months ended March 31, 2024 were as follows:

Schedule of Warrant Activity

	Number of		Weighted Average
	Warrants		Exercise Price
Warrants outstanding at December 31, 2023		304,962	$	63.30
Granted		-		-
Forfeited/cancelled		-		-
Exercised		-		-
Warrants outstanding at March 31, 2024		304,962	$	63.30
Warrants exercisable at March 31, 2024		304,962	$	63.30

As of March 31, 2024, all issued and outstanding warrants are fully vested. The warrants had an exercise price greater than the market price, which resulted in no intrinsic value.

Warrants outstanding as of March 31, 2024 are exercisable as follows:

		Warrants Outstanding						Warrants Exercisable
Range of Exercise Price		Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$	10.50		1,867		1.3	$	10.50		1,867	$	10.50
	30.00 – 37.50		229,666		4.3		30.42		229,666		30.42
	165		73,429		1.9		165.00		73,429		165.00
			304,962						304,962

Common Stock Options

Common stock option transactions for the three months ended March 31, 2024 were as follows:

Schedule of Options Activity

	Number of		Weighted Average
	Options		Exercise Price
Options outstanding at December 31, 2023		126,265	$	39.60
Granted		—		—
Forfeited/cancelled		—		—
Exercised		—		—
Options outstanding at March 31, 2024		126,265	$	39.60
Options exercisable at March 31, 2024		123,487	$	40.25

The Company is recognizing the corresponding stock compensation expense for options granted to certain consultants, employees, officers and directors based upon their vesting term.

On January 27, 2023, the Company granted stock options to employees and members of its board of directors to purchase an aggregate of 66,667 shares of common stock. The stock options are exercisable at $25.50 per share, expires in 10 years, vest over twelve months and had a fair value of $1.4 million at the date of grant. determined using the Black-Scholes Option Pricing model with the following assumptions:

Schedule of Stock Granted Assumptions

Stock price	$	0.85
Risk-free interest rate		3.62	%
Expected volatility		121	%
Expected life (in years)		5.3
Expected dividend yield		-

For the three months ended March 31, 2024, the Company recognized stock compensation expense related to the vesting options of $102,000. For the three months ended March 31, 2023, the Company recognized stock compensation expense relating to the vesting of options granted on January 27, 2023 and prior years of $507,000.

Options outstanding as of March 31, 2024 are exercisable as follows:

		Options Outstanding						Options Exercisable
Range of Exercise Price		Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$	10.50		16,666		9.1	$	10.50		13,888	$	10.50
	25.50		66,667		8.8		25.50		66,667		25.50
	74.40		42,932		8.3		74.40		42,932		74.40
			126,265						123,487

At March 31, 2024 and 2023, there were 2,778 and 53,225 unvested options with a grant date fair value of $12,000 and $1.3 million, respectively, which will be recognized as stock compensation expense in future periods based upon the remaining vesting term of the applicable grants.

There was no intrinsic value of the outstanding options as of March 31, 2024 as the exercise price of these options was greater than the market price.

Note 7 – Commitments and Contingencies

Litigation

The Company is involved in certain legal proceedings that arise from time to time in the ordinary course of our business. Except for income tax contingencies, we record accruals for contingencies to the extent that our management concludes that the occurrence is probable and that the related amounts of loss can be reasonably estimated. Legal expenses associated with the contingency are expensed as incurred. There is no current or pending litigation of any significance with the exception of the matters that have arisen under, and are being handled in, the normal course of business.

	●	On November 14, 2023, former interim Chief Executive Officer, Dr. Greg Berk filed a lawsuit alleging that GT Biopharma discriminated and retaliated against Berk for engaging in protected whistleblowing activity in violation of the Sarbanes Oxley Act ("SOX"). The Parties are proceeding with litigating Berk's SOX claim. GT Biopharma is vigorously defending this matter and believe it to be without merit. At this early stage in the proceedings, GT Biopharma is not able to determine the probability of the outcome of this matter or a range of reasonably expected losses, if any.

	●	On May 13, 2022, the Company made an arbitration demand upon Michael Handelman, its former Chief Financial Officer, asserting that he breached his fiduciary duty by misappropriating Company funds and shares of common stock, among other things. The Company seeks among other relief, monetary damages estimated at $470,000; the return of 13,903 shares of our common stock received without authorization; and an award of the Company’s attorneys’ fees and any forum and arbitration fees. As a component of Mr. Handelman’s contract with the Company, disputes shall be fully addressed and finally resolved by binding arbitration conducted by the American Arbitration Association (AAA). In connection with any such arbitration, the Company shall bear all costs not otherwise borne by a plaintiff in a court proceeding. On March 20, 2024, the Arbitrator issued an interim award in favor of the Company in the amount of $409,000 and directed Mr. Handelman to return the disputed 13,903 shares of common stock . The Arbitrator also awarded the Company its attorney fees and forum costs in an amount to be determined at the time of the final award.

	●	On May 24, 2023, TWF Global, LLC (“TWF”) filed a Complaint in the California Superior Court for the County of Los Angeles naming the Company as defendant. The Complaint alleges that TWF is the holder of two Convertible Promissory Notes (“Notes”) and that the Company did not deliver shares of common stock due on conversion in February 2021. TWF was seeking per diem liquidated damages based on the terms of alleged Notes. On July 14, 2023, the Company filed a motion to dismiss for improper forum because the terms of the Notes, as alleged, require disputes to be filed in New York state and federal courts. TWF voluntarily dismissed its Complaint before the California Superior Court of Los Angeles without prejudice. The Company subsequently filed a Summons and Complaint for Interpleader against TWF and Z One LLC before the Supreme Court of the State of New York County of New York, asking the Supreme Court to determine if the Company’s shares of common stock are properly registered to TWF or Z One LLC, as both of these entities have made conflicting demands for registration of the shares of common stock. On February 5, 2024, the Company filed a motion for entry of default against TWF, seeking an order directing the Company to register the shares of common stock in the name of Z-One and that the Company be released from all associated liability and claims. The Court has not yet ruled on the Company’s motion. The Company believes that any claims related to the Notes are without merit and will continue to defend vigorously against these claims. The Court denied the motion without prejudice, and will reconsider the motion without further briefing upon the filing of a party affidavit. Z-One has filed a concurrent motion to dismiss of the action, representing that Z-One and TWF have settled their dispute over the entitlement to GT Biopharma shares. The Company believes that any claims related to the Notes are without merit and will continue to defend vigorously against these claims.

Significant Agreements

Research and Development Agreements

The Company is a party to a scientific research agreement with the Regents of the University of Minnesota (“UofMN”), effective June 16, 2021. This scientific research agreement aims to work with the Company with three major goals in mind: (1) support the Company’s TriKE^®product development and GMP manufacturing efforts; (2) TriKE^® pharmacokinetics optimization in humans; and (3) investigation of the patient’s native NK cell population based on insights obtained from the analysis of the human data generated during our GTB-3550 clinical trial. The major deliverables proposed here are: (1) creation of IND enabling data for TriKE^®constructs in support of our product development and GMP manufacturing efforts; (2) TriKE^® platform drug delivery changes to allow transition to alternative drug delivery means and extended PK in humans; and (3) gain an increased understanding of changes in the patient’s native NK cell population as a result of TriKE^®therapy. Most studies will use TriKE^®DNA/amino acid sequences created by us under current UMN/GTB licensing terms. This agreement expired on June 30, 2023. The Company and UofMN are negotiating the terms of a new scientific research agreement and expect to finalize it in the first half of 2024.

The Company recorded an expense of $0 and $192,000 pursuant to the scientific research agreement, for the three months ended March 31, 2024 and 2023, respectively. The Company has recorded an expense in the aggregate of $2.1 million as of March 31, 2024 pursuant to this agreement.

Patent and License Agreements

2016 Exclusive Patent License Agreement

The Company is party to an exclusive worldwide license agreement with the Regents of the University of Minnesota, (“UofMN”), to further develop and commercialize cancer therapies using TriKE^® technology developed by researchers at the UofMN to target NK cells to cancer. Under the terms of the 2016 agreement, the Company receives exclusive rights to conduct research and to develop, make, use, sell, and import TriKE^® technology worldwide for the treatment of any disease, state, or condition in humans. The Company is responsible for obtaining all permits, licenses, authorizations, registrations, and regulatory approvals required or granted by any governmental authority anywhere in the world that is responsible for the regulation of products such as the TriKE^® technology, including without limitation the FDA and the European Agency for the Evaluation of Medicinal Products in the European Union. Under the agreement, the UofMN received an upfront payment of $200,000, and an annual License Maintenance fee of $100,000 beginning in 2021. The agreement also includes 4% royalty fees, not to exceed 6% under subsequence license agreements or amendments to this agreement or minimum annual royalty payments ranging from $250,000 to $5.0 million. The agreement also includes certain performance milestone payments totaling $3.1 million, and one-time sales milestone payments of $1.0 million upon reaching $250 million in gross sales, and $5.0 million upon reaching $500 million dollars in cumulative gross sales of Licensed Products.

The Company did not incur any research and development expense relating to the 2016 Exclusive Patent License Agreement for the three months ended March 31, 2024 and 2023, respectively.

2021 Patent License Agreement

On March 26, 2021, the Company signed an agreement specific to the B7H3 targeted TriKE^®. Under the agreement, the UofMN received an upfront license fee of $20,000 and will receive an annual License Maintenance fee of $5,000 beginning in 2022, 2.5% to 5% royalty fees, or minimum annual royalty payments of $250,000 beginning in the year after the first commercial sales of Licensed Product, and $2.0 million beginning in the fifth year after the first commercial sale of such Licensed Product. The agreement also includes certain performance milestone payments totaling $3.1 million, and one-time sales milestone payments of $1.0 million upon reaching $250 million in gross sales, and $5.0 million upon reaching $500 million dollars in cumulative gross sales of Licensed Products. There is no double payment intended; if one of the milestone payments has been paid under the 2016 agreement no further payment is due for the corresponding milestone above.

The Company did not incur any research and development expense relating to the 2021 Patent License Agreement for the three months ended March 31, 2024 and 2023, respectively.

Note 8 – Operating Leases

Leases with an initial term of 12 months or less are not recorded on the balance sheet. The Company accounts for the lease and non-lease components of its leases as a single lease component. Rent expense is recognized on a straight-line basis over the lease term. Operating lease Right-of-Use (“ROU”) assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. Generally, the implicit rate of interest in arrangements is not readily determinable and the Company utilizes its incremental borrowing rate in determining the present value of lease payments. The Company’s incremental borrowing rate is a hypothetical collateralized borrowing rate based on its understanding of what its credit rating would be. The operating lease ROU asset includes any lease payments made and excludes lease incentives.

On November 19, 2021, the Company entered into a sublease with a third party for 4,500 square feet of office space located in Brisbane, California, with a commencement date of January 1, 2022 and maturing on June 30, 2024. As a result of this agreement, the Company recognized ROU asset and liability of $247,294 pursuant to ASC 842, Leases.

On February 8, 2022, the Company entered into a copier lease which will end on February 7, 2025. As a result, the Company recognized additional ROU asset and liability of $13,000. In October 2023, this lease was cancelled and the remaining ROU asset of $6,000 was written off against the cancelled lease liability.

As a result of these lease agreements, the Company recognized ROU asset and liability in the aggregate of $260,294.

The total rent expense related to these leases reflected on the Company’s Condensed Consolidated Statements of Operations totaled $25,000 and $29,000 for the three months ended March 31, 2024 and 2023, respectively.

Other information related to leases and future minimum lease payments under non-cancellable operating leases were as follows:

	March 31, 2024 (Unaudited)			March 31, 2023 (Unaudited)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	30		$	30
Weighted-average remaining lease term (in years):
Operating leases		0.25			1.5
Weighted-average discount rate:
Operating leases		10	%		10	%

Future minimum lease payments under non-cancellable operating leases were as follows (in thousands):

	March 31, 2024 (Unaudited)
Within one year	$	30
After one year and within two years		-
After two years and within three years		-
Thereafter		-
Total future minimum lease payments		30
Less – Discount		(0	)
Lease liability	$	30

Note 9 – Subsequent Event

On April 30, 2024, the Company issued 36,018 shares of common stock to settle $278,500 of vendor accounts payable. The shares were valued at the month-end closing price of the Company’s common stock for the months for which services were provided by the vendor.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

CAUTIONARY NOTICE REGARDING FORWARD-LOOKING STATEMENTS

Some of the statements in this Quarterly Report on Form 10-Q are “forward-looking statements” within the meaning of the safe harbor from liability established by the Private Securities Litigation Reform Act of 1995. Forward-looking statements include statements regarding our current beliefs, goals and expectations about matters such as our expected financial position and operating results, our business strategy and our financing plans. The forward-looking statements in this report are not based on historical facts, but rather reflect the current expectations of our management concerning future results and events. The forward-looking statements generally can be identified by the use of terms such as “believe,” “expect,” “anticipate,” “intend,” “plan,” “foresee,” “may,” “guidance,” “estimate,” “potential,” “outlook,” “target,” “forecast,” “likely” or other similar words or phrases. Similarly, statements that describe our objectives, plans or goals are, or may be, forward-looking statements. Forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause our actual results, performance or achievements to be different from any future results, performance and achievements expressed or implied by these statements. We cannot guarantee that our forward-looking statements will turn out to be correct or that our beliefs and goals will not change. Our actual results could be very different from and worse than our expectations for various reasons. You should carefully review all information, including the discussion of risk factors under “Part I. Item 1A: Risk Factors” and “Part II. Item 7: Management’s Discussion and Analysis of Financial Condition and Results of Operations” of the Form 10-K for the year ended December 31, 2023. Any forward-looking statements in the Form 10-Q are made only as of the date hereof and, except as may be required by law, we do not have any obligation to publicly update any forward-looking statements contained in this Form 10-Q to reflect subsequent events or circumstances.

Throughout this Quarterly Report on Form 10-Q, the terms “GTBP,” “we,” “us,” “our,” “the Company” and “our Company” refer to GT Biopharma, Inc., a Delaware corporation formerly known as Oxis International, Inc., DDI Pharmaceuticals, Inc. and Diagnostic Data, Inc, together with our subsidiaries.

Overview

We are a clinical stage biopharmaceutical company focused on the development and commercialization of novel immuno-oncology products based on our proprietary Tri-specific Killer Engager (TriKE®) fusion protein immune cell engager technology platform. Our TriKE® platform generates proprietary therapeutics designed to harness and enhance the cancer killing abilities of a patient’s own natural killer cells, or NK cells. Once bound to an NK cell, our moieties are designed to enhance the NK cell, and precisely direct it to one or more specifically targeted proteins expressed on a specific type of cancer cell or virus infected cell, resulting in the targeted cell’s death. TriKE®s can be designed to target any number of tumor antigens on hematologic malignancies or solid tumors and do not require patient-specific customization.

We are using our TriKE® platform with the intent to bring to market immuno-oncology products that can treat a range of hematologic malignancies and solid tumors. The platform is scalable, and we are putting processes in place to be able to produce investigational new drug (IND) ready moieties in a timely manner after a specific TriKE® conceptual design. Specific drug candidates can then be advanced into the clinic on our own or through potential collaborations with partnering companies. We believe our TriKE®s may have the ability, if approved for marketing, to be used as both monotherapy and in combination with other standard-of-care therapies.

We are also using our TriKE® platform to develop therapeutics useful for the treatment of infectious disease such as for the treatment of patients infected by the human immunodeficiency virus (HIV). While the use of anti-retroviral drugs has substantially improved the health and increased the longevity of individuals infected with HIV, these drugs are designed to suppress virus replication to help modulate progression to acquired immunodeficiency syndrome (AIDS) and to limit further transmission of the virus. Despite the use of anti-retroviral drugs, infected individuals retain reservoirs of latent HIV-infected cells that, upon cessation of anti-retroviral drug therapy, can reactivate and re- establish an active HIV infection. For a curative therapy, destruction of these latent HIV infected cells must take place. The HIV-TriKE^® contains the antigen binding fragment (Fab) from a broadly neutralizing antibody targeting the HIV-Env protein or a protein that binds infected CD4+ T cells. The HIV-TriKE^® is designed to target HIV while redirecting NK cell killing specifically to actively replicating HIV infected cells. The HIV-TriKE^® induced NK cell proliferation and demonstrated the ability in vitro to reactivate and kill HIV-infected T-cells. These findings indicate a potential role for the HIV-TriKE^®in the reactivation and elimination of the latently infected HIV reservoir cells by harnessing the NK cell’s ability to mediate the antibody-directed cellular cytotoxicity (ADCC).

Our initial work was conducted in collaboration with the Masonic Cancer Center at the University of Minnesota under a program led by Dr. Jeffrey Miller, Professor of Medicine, and the Deputy Director at the Center. Dr. Miller is a recognized key opinion leader in the field of NK cell and IL-15 biology and their therapeutic potential. We have exclusive rights to the TriKE^® platform and are generating additional intellectual property for specific moieties.

GTB-3550

GTB-3550 was our first TriKE^® product candidate. It reflected our first-generation TriKE^® platform. It is a single-chain, tri-specific scFv recombinant fusion protein conjugate composed of the variable regions of the heavy and light chains of anti-CD16 and anti-CD33 antibodies and a modified form of IL-15. We studied this anti-CD16-IL-15-anti-CD33 TriKE^®in CD33 positive leukemias, a marker expressed on tumor cells in acute myelogenous leukemia, or AML, and myelodysplastic syndrome, or MDS. CD33 is primarily a myeloid differentiation antigen with endocytic properties broadly expressed on AML blasts and, possibly, some leukemic stem cells. CD33 or Siglec-3 (sialic acid binding Ig-like lectin 3, SIGLEC3, SIGLEC3, gp67, p67) is a transmembrane receptor expressed on cells of myeloid lineage. It is usually considered myeloid-specific, but it can also be found on some lymphoid cells. The anti-CD33 antibody fragment used for these studies was derived from the M195 humanized anti-CD33 scFv and has been used in multiple human clinical studies. It has been exploited as a target for therapeutic antibodies for many years. We believe the approval of the antibody-drug conjugate gemtuzumab validates this targeted approach.

GTB-3550 was replaced by a more potent next-generation camelid nanobody TriKE^®, GTB-3650, both targeting CD33 on relapsed/refractory Acute Myeloid Leukemia (AML) and high-risk Myelodysplastic Syndromes (MDS). The pivot from GTB-3550 to GTB-3650 in our clinical development was based on a solid preclinical foundation that showed markedly enhanced potency of the camelid modification of the first-generation TriKE. This is illustrated below by better tumor control of AML bearing animals with GTB-3650 (purple dots) compared to GTB-3550 (blue dots). This provided the rationale for pausing further development of GTB-3550 and moving over to solely develop the 2^nd generation TriKE platform.

The Next Generation of Camelid Nanobody TriKE^®s

Our goal is to be a leader in immuno-oncology therapies targeting a broad range of indications including hematological malignancies and solid tumors. A key element of our strategy includes introducing a next-generation camelid nanobody platform. Camelid antibodies (often referred as nanobodies) are smaller than human immunoglobulin and consist of two heavy chains. These nanobodies have the potential to have greater affinity to target antigens, potentially resulting in greater potency. GT Biopharma is utilizing this camelid antibody structure for all its new TriKE^® product candidates.

Generation of humanized single-domain antibody targeting CD16 for incorporation into the TriKE^® platform

To develop second generation TriKE^®s, we designed a new humanized CD16 engager derived from a single-domain antibody. While scFvs consist of a heavy and a light variable chain joined by a linker, single-domain antibodies consist of a single variable heavy chain capable of engaging without the need of a light chain counterpart (see figure below).

These single-domain antibodies are thought to have certain attractive features for antibody engineering, including physical stability, ability to bind deep grooves, and increased production yields, amongst others. Pre-clinical studies demonstrated increased NK cell activation against CD33+ targets including enhanced NK cell degranulation (% CD107a+) and IFNg with the single-domain CD16 TriKE^® (cam 16-wt15-33; GTB-3650) compared to the original TriKE^® (scFv16-m 15-33; GTB-3550) (see figure below). This data was published by Dr. Felices M et al (2020) in Cancer Immunol Res.

CD33+ HL60 Targets in Killing Assays

(Purple line represents the GTB-3650 and Blue line represents GTB-3550)

GTB-3650

GTB-3650 is a CD33 targeted TriKE® which targets CD33 on the surface of myeloid leukemias and an agonistic camelid engager to the potent activating receptor on NK cells, CD16. Use of this engager enhances the activity of wild type IL-15 included in GTB-3650, no longer needing the mutant IL-15 included in GTB-3550. The TriKE® approach provides a novel way to specifically target these tumors by leveraging NK cells, which have been shown to mediate relapse protection in this setting, in an anti-CD33-targeted fashion. We are moving GTB-3650 clinically based on pre-clinical data showing a marked increase in potency compared to GTB-3550, which we anticipate could lead to an enhanced efficacy signal in AML and MDS. We are advancing GTB-3650 through preclinical studies and have filed an Investigational New Drug (IND) application with the FDA in December 2023. The Company continues to be in a productive dialogue with the FDA with respect to its IND Application in relation to GTB 3650. We further anticipate approval to start study enrollment targeting patients with relapsed/refractory AML and high grade MDS by the second half of 2024. This initial study will test GTB-3650 as monotherapy testing administration 2 weeks on and two weeks off (to prevent NK cell exhaustion) for at least 2 cycles of therapy. The design of the trial has been agreed on with the FDA.

GTB-5550

GTB-5550 is a B7-H3 targeted TriKE® which targets B7-H3 on the surface of advanced solid tumors (figure above). B7-H3 is an exciting target as it displays specific expression on a broad spectrum of solid tumor malignancies, allowing our team to target these malignancies through GTB-5550. Pre-clinical work has shown that this molecule has NK-cell targeted activity against a variety of solid tumor settings, including head and neck cancer squamous cell carcinoma (figure below), prostate cancer, breast cancer, ovarian cancer, glioblastoma, and lung cancer (amongst others). We are advancing GTB-5550 through preclinical studies and have initiated a GMP manufacturing campaign in anticipation of filing an IND in the late second half of 2024. A pre-IND packet was submitted to the FDA in October 2023 with a written response from the FDA in December 2023. The main question to the FDA was regarding pre-clinical toxicology and a pivot to subcutaneous dosing. The initial trial is designed as a basket trial for patients with B7-H3+ solid tumors using Monday through Friday dosing (2 weeks on and 2 weeks off to prevent immune exhaustion). This is dependent on manufacturing of clinical materials. We expect a study targeting patients with B7-H3 positive solid tumors in the first half of 2025.

Reverse Stock Split

Proportionate adjustments were made to the per share exercise price and the number of shares of common stock that may be purchased upon exercise of outstanding stock options for the Company’s common stock and to the number of shares of common stock reserved for future issuance pursuant to the GT Biopharma, Inc. 2022 Omnibus Incentive Plan.

All share and per share information within this report have been adjusted to retroactively reflect the reverse stock-split as of the earliest period presented.

Economic Disruption

While we make our strategic planning decisions based on the assumption that the markets we are targeting will grow in the long term, our business is dependent, in large part on, and directly affected by, business cycles and other factors affecting the economy generally. Our industry depends on general economic conditions and other factors, including consumer spending and preferences, changes in inflation rates, supply chain issues and impediments should they arise for us, as the U.S. and various other major economies are now experiencing, consumer confidence, fuel costs, fuel availability, environmental impact, governmental incentives and regulatory requirements, and political volatility.

In addition, the outbreak of full-scale wars between Russia and Ukraine and Israel and Palestine (“Conflicts”) and global reactions thereto have increased U.S. domestic and global energy prices. Oil supply disruptions related to the Conflicts, and sanctions and other measures taken by the U.S. and its allies, could lead to higher costs for gas, food, and goods in the U.S. and other geographies and exacerbate the inflationary pressures on the worldwide economy, with potentially adverse impacts on our business, results of operations and financial condition.

Results of Operations

Comparison of the Three Months Ended March 31, 2024 and 2023

Research and Development Expenses (“R&D”)

During the three months ended March 31, 2024 and 2023, we incurred $777,000 and $1.65 million of R&D expenses, respectively. R & D expenses relate to our continued development and production of our most advanced TriKE® product candidates GTB-3650 and GTB-5550 along with the progression on other promising candidates. R&D expenses decreased by $873,000 primarily due to reduction in raw material purchases of $657,000 as we benefit from the near completion of product development for GTB 3650 and continue to advance our progression to the new stage of our product development of GTB 5550, and reduction of $216,000 in consulting fees due to better management of other research and development costs. We anticipate our direct clinical and preclinical expenses to continue to increase in 2024 as we plan to advance our next generation GTB-3650 camelid nanobody product into the clinic and enroll patients, perform tests for data collection, complete the product development of GTB-5550 and anticipate submission of IND application for GTB-5550 in the fourth quarter of 2024. We do not, however, anticipate an increase in related R&D licensing and administrative costs.

Selling, General and Administrative Expenses (“SG&A”)

Selling, general and administrative expense (“SG&A”) was $2.31 million and $2.02 million for the three months ended March 31, 2024 and 2023, respectively. SG&A expenses increased by $299,000 as compared to the prior year comparable period, primarily due to reduction in stock-based compensation expense for officers, employees and board of directors by $616,000, offset by an increase in legal and professional fees of $794,000 and an increase in costs of filing regulatory fees and other SG&A expenses of $121,000.

Interest Income

We recorded interest income of $142,000 and $164,000 for the three months ended March 31, 2024 and 2023, respectively. The decrease in interest income was due to lower short term investment balances during the three months ended March 31, 2024 as compared to prior year comparable period.

Interest Expense

We recorded interest expense of $0 and $212,000 for the three months ended March 31, 2024 and 2023, respectively. The interest expense for the three months ended March 31, 2023 was due to the financing costs incurred associated with warrants accounted as warrant liability sold during the three months ended March 31, 2023 which did not recur in the current year.

Change in Fair Value of Warrant Liability

We recorded a gain of $658,000 due to a change in fair value of warrant liability for the three months ended March 31, 2024, compared to a gain of $2.92 million for the three months ending March 31, 2023. The decrease in gain resulted due to a reduction in our warrant liability because of the decline in the Company’s stock price at March 31, 2024 as compared to the prior comparable period.

Gain on Extinguishment of Debt

We recorded a gain on extinguishment of debt of $0 and $533,000 for the three months ended March 31, 2024 and 2023, respectively. The gain in the three months ended March 31, 2023 was as a result of share settlement of a greater amount of vendor accounts payable than the fair value of the shares on the date of settlement. There was no similar transaction during the current period.

Unrealized (Gain) Loss on Marketable Securities

We recorded an unrealized loss on marketable securities of $2,000 for the three months ended March 31, 2024 as compared to an unrealized gain on marketable securities of $29,000 for the three months ended March 31, 2023. This resulted from lower investments balances for the three months ended March 31, 2024 as compared to prior year comparable period.

As a result of the above, the Company recorded a net loss of $2.27 million for the three months ended March 31, 2024 as compared to a loss of $227,000 for the same comparable period in 2023.

Liquidity and Capital Resources

The Company’s current operations have focused on business planning, raising capital, establishing an intellectual property portfolio, hiring, and conducting preclinical studies. The Company does not have any product candidates approved for sale and has not generated any revenue from its product sales. The Company has sustained operating losses since inception and expects such losses to continue into the foreseeable future. We anticipate that cash utilized in the twelve months following this filing date for selling, general and administrative expenses will range between $3.0 and $3.5 million, and used for research and development expenses will range between $3.5 and $4.0 million.

The Company reported cash and cash equivalents of $1.95 million and short-term investments of $7.86 million as of March 31, 2024. Management believes that the Company has sufficient cash and cash equivalents, and short-term investments to fund its operations for more than twelve months from the date of this filing.

Management is currently evaluating different strategies to obtain the required funding for future operations. These strategies may include but are not limited to public offerings of equity and/or debt securities, payments from potential strategic research and development, licensing and/or marketing arrangements with pharmaceutical companies.

Critical Accounting Policies

We consider the following accounting policies to be critical given they involve estimates and judgments made by management and are important for our investors’ understanding of our operating results and financial condition.

Basis of Presentation and Principles of Consolidation

The accompanying condensed consolidated financial statements have been prepared in accordance with GAAP. These condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, Oxis Biotech, Inc. and Georgetown Translational Pharmaceuticals, Inc. Intercompany transactions and balances have been eliminated in consolidation.

Accounting Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates include accruals for potential liabilities, assumptions used in deriving the fair value of warrant liabilities, valuation of equity instruments issued for services, and valuation of deferred tax assets. Actual results could differ from those estimates.

Stock-Based Compensation

The Company accounts for share-based awards to employees, nonemployees and consultants in accordance with the provisions of Accounting Standards Codification 718, Compensation-Stock Compensation. Stock-based compensation cost is measured at fair value on the grant date and that fair value is recognized as expense over the requisite service, or vesting period.

The Company values its equity awards using the Black-Scholes option pricing model, and accounts for forfeitures when they occur. Use of the Black-Scholes option pricing model requires the input of subjective assumptions including expected volatility, expected term, and a risk-free interest rate. The Company estimates volatility using its own historical stock price volatility. The expected term of the instrument is estimated by using the simplified method to estimate expected term. The risk-free interest rate is estimated using comparable published federal funds rates.

Inflation

We believe that inflation has not had a material adverse impact on our business or operating results during the periods presented other than the impact of inflation on the general economy. However, there is a risk that the Company’s operating costs could become subject to inflationary pressures in the future, which would have the effect of increasing the Company’s operating costs, and which would put additional stress on the Company’s working capital resources.

Off-balance Sheet Arrangements

We have no off-balance sheet arrangements as of March 31, 2024.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Our Company qualifies as a smaller reporting company, as defined in 17 C.F.R. §229.10(f)(1) and is not required to provide information for this Item.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our Principal Executive Officer, Principal Financial Officer and Principal Accounting Officer evaluated the effectiveness of our “disclosure controls and procedures” (as such term is defined in Rules 13a-15(e) and 15d-15(e) of the United States Securities Exchange Act of 1934, as amended), as of March 31, 2024. Based on that evaluation, we have concluded that our disclosure controls and procedures were effective as of March 31, 2024.

Management’s Report on Internal Control Over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting. Internal control over financial reporting is defined in Rule 13a-15(f) or 15d-15(f) promulgated under the Securities Exchange Act of 1934, as amended, as a process designed by, or under the supervision of, a company’s principal executive and principal accounting officers and effected by a company’s board of directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of consolidated financial statements for external purposes in accordance with generally accepted accounting principles and includes those policies and procedures that:

	●	Pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of the assets of the Company

	●	Provide reasonable assurance that transactions are recorded as necessary to permit preparation of consolidated financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and

	●	Provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company’s assets that could have a material effect on the consolidated financial statements.

All internal control systems, no matter how well designed, have inherent limitations and can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within our company have been detected. Therefore, even those systems determined to be effective can provide only reasonable assurance with respect to financial statement preparation and presentation.

As of March 31, 2024, our management, including our interim Chief Executive Officer and Chief Financial Officer conducted an assessment of the effectiveness of the Company’s internal control over financial reporting. In making this assessment, we used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission in internal control integrated framework. Based upon our evaluation, we concluded that our internal controls over financial reporting were operating effectively with a significant level of precision as of March 31, 2024.

Changes in Internal Control Over Financial Reporting

No changes in our internal controls over financial reporting were made during our most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

	●	On May 24, 2023, TWF Global, LLC (“TWF”) filed a Complaint in the California Superior Court for the County of Los Angeles naming the Company as defendant. The Complaint alleges that TWF is the holder of two Convertible Promissory Notes (“Notes”) and that the Company did not deliver shares of common stock due on conversion in February 2021. TWF was seeking per diem liquidated damages based on the terms of alleged Notes. On July 14, 2023, the Company filed a motion to dismiss for improper forum because the terms of the Notes, as alleged, require disputes to be filed in New York state and federal courts. TWF voluntarily dismissed its Complaint before the California Superior Court of Los Angeles without prejudice. The Company subsequently filed a Summons and Complaint for Interpleader against TWF and Z One LLC before the Supreme Court of the State of New York County of New York, asking the Supreme Court to determine if the Company’s shares of common stock are properly registered to TWF or Z One LLC, as both of these entities have made conflicting demands for registration of the shares of common stock. On February 5, 2024, the Company filed a motion for entry of default against TWF, seeking an order directing the Company to register the shares of common stock in the name of Z-One and that the Company be released from all associated liability and claims. The Court has not yet ruled on the Company’s motion. The Company believes that any claims related to the Notes are without merit and will continue to defend vigorously against these claims. The Court denied the motion without prejudice, and will reconsider the motion without further briefing upon the filing of a party affidavit. Z-One has filed a concurrent motion to dismiss of the action, representing that Z-One and TWF have settled their dispute over the entitlement to GT Biopharma shares. The Company believes that any claims related to the Notes are without merit and will continue to defend vigorously against these claims.

	●	On May 13, 2022, the Company made an arbitration demand upon Michael Handelman, its former Chief Financial Officer, asserting that he breached his fiduciary duty by misappropriating Company funds and shares of common stock, among other things. The Company seeks among other relief, monetary damages estimated at $470,000; the return of 13,903 shares of our common stock received without authorization; and an award of the Company’s attorneys’ fees and any forum and arbitration fees. As a component of Mr. Handelman’s contract with the Company, disputes shall be fully addressed and finally resolved by binding arbitration conducted by the American Arbitration Association (AAA). In connection with any such arbitration, the Company shall bear all costs not otherwise borne by a plaintiff in a court proceeding. On March 20, 2024, the Arbitrator issued an interim award in favor of the Company in the amount of $409,000 and directed Mr. Handelman to return the disputed 13,903 shares of common stock. The Arbitrator also awarded the Company its attorney fees and forum costs in an amount to be determined at the time of the final award.

●

On November 14, 2023, former interim Chief Executive Officer, Dr. Greg Berk filed a lawsuit alleging that GT Biopharma discriminated and retaliated against Berk for engaging in protected whistleblowing activity in violation of the Sarbanes Oxley Act ("SOX"). The Parties are proceeding with litigating Berk's SOX claim. GT Biopharma is vigorously defending this matter and believe it to be without merit. At this early stage in the proceedings, GT Biopharma is not able to determine the probability of the outcome of this matter or a range of reasonably expected losses, if any.

Item 6. Exhibits

Exhibit	Description	Filed Herewith	Form	Number	SEC File No.	Filing Date

3.1	Restated Certificate of Incorporation as filed in Delaware September 10, 1996 and as thereafter amended through March 1, 2002		10-KSB	3.A	000-08092	4/1/2002
3.2	Certificate of Amendment to the Restated Certificate of Incorporation of GT Biopharma, Inc., dated February 9, 2011		10-K	3.2	000-08092	3/31/2011
3.3	Certificate of Amendment to the Restated Certificate of Incorporation of GT Biopharma, Inc., effective as of July 19, 2017		8-K/A	3.1	000-08092	3/15/2018
3.4	Certificate of Amendment to the Restated Certificate of Incorporation of GT Biopharma, Inc., effective as of February 10, 2021		8-K	3.1	001-40023	2/11/2021
3.5	Certificate of Amendment to Restated Certificate of Incorporation of the Registrant effective June 13, 2022		10-K	3.5	001-40023	3/30/2023
3.6	Certificate of Amendment to Restated Certificate of Incorporation of the Registrant effective February 1, 2024		8-K	3.1	001-40023	2/1/2024
3.7	Amended and Restated Bylaws of GT Biopharma, Inc. effective November 3, 2022		8-K	3.1	001-40023	11/9/2022
4.1	Certificate of Designation of Preferences, Rights and Limitations of Series J-1 Preferred Stock of GT Biopharma, Inc., dated April 3, 2019		8-K	3.1	000-08092	4/4/2019
4.2	Certificate of Designation of Preferences, Rights and Limitations of Series K Preferred Stock of GT Biopharma, Inc. dated April 3, 2019		10-K	4.2	001-40023	4/16/2021

31.1

Certification of Principal Executive Officer pursuant to Rule 13a-14 and Rule 15d-14(a), promulgated under the Securities and Exchange Act of 1934, as amended.

31.2

Certification of Principal Executive Officer pursuant to Rule 13a-14 and Rule 15d-14(a), promulgated under the Securities and Exchange Act of 1934, as amended.

32.1

Certification of Principal Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002*

32.2

Certification of Principal Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002*

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*	This certification shall not be deemed “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liability of that Section, nor shall it be deemed to be incorporated by reference into any filing under the Securities Act or the Exchange Act.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	GT Biopharma, Inc.

Dated: May 15, 2024	By:	/s/ Manu Ohri
		Manu Ohri
		Chief Financial Officer & Secretary
		(Principal Financial and Accounting Officer)

Exhibit 31.1

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT

I, Michael Breen, certify that:

	a.	I have reviewed this report on Form 10-Q of GT Biopharma, Inc.;

	b.	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;

	c.	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;

	d.	I am 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 15d-15(f) for the registrant and have:

		i)	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;

		ii)	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;

		iii)	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

		iv)	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

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):

		i)	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

		ii)	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: May 15, 2024	By:	/s/ Michael Breen
	Name:	Michael Breen
	Title:	Interim Chief Executive Officer and Executive
		Chairman of the Board
		(Principal Executive Officer)

Exhibit 31.2

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT

I, Manu Ohri, certify that:

	a.	I have reviewed this report on Form 10-Q of GT Biopharma, Inc.;

	b.	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;

	c.	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;

	d.	I am 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 15d-15(f) for the registrant and have:

		i)	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;

		ii)	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;

		iii)	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

		iv)	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

		i)	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

		ii)	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: May 15, 2024	By:	/s/ Manu Ohri
	Name:	Manu Ohri
	Title:	Chief Financial Officer & Secretary
		(Principal Financial Officer)

Exhibit 32.1

CERTIFICATION TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, I, Michael Breen, Chief Executive Officer of GT Biopharma, Inc. (the “Company”), hereby certify that, to the best of my knowledge:

(i) the Quarterly Report on Form 10-Q of the Company for the fiscal quarter ended March 31, 2024 (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operation of the Company.

Date: May 15, 2024	By:	/s/ Michael Breen
	Name:	Michael Breen
	Title:	Interim Chief Executive Officer and Executive
		Chairman of the Board
		(Principal Executive Officer)

Exhibit 32.2

CERTIFICATION TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, I, Manu Ohri, Chief Financial Officer and Principal Accounting Officer of GT Biopharma, Inc. (the “Company”), hereby certify that, to the best of my knowledge:

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operation of the Company.

Date: May 15, 2024	By:	/s/ Manu Ohri
	Name:	Manu Ohri
	Title:	Chief Financial Officer & Secretary
		(Principal Financial Officer)

Cover - shares	3 Months Ended
Cover - shares	Mar. 31, 2024	May 15, 2024
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2024
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2024
Current Fiscal Year End Date	--12-31
Entity File Number	001-40023
Entity Registrant Name	GT BIOPHARMA, INC.
Entity Central Index Key	0000109657
Entity Tax Identification Number	94-1620407
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	8000 Marina Blvd
Entity Address, Address Line Two	Suite 100
Entity Address, City or Town	Brisbane
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94005
City Area Code	415
Local Phone Number	919-4040
Title of 12(b) Security	Common Stock, $0.001 par value per share
Trading Symbol	GTBP
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1,416,651

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 1,950	$ 1,079
Short-term investments	7,857	12,893
Prepaid expenses and other current assets	78	84
Total Current Assets	9,885	14,056
Operating lease right-of-use asset	27	53
TOTAL ASSETS	9,912	14,109
Current liabilities
Accounts payable	3,213	4,328
Accrued expenses	963	1,195
Current operating lease liability	30	58
Warrant liability	394	1,052
Total Current Liabilities	4,600	6,633
Total Liabilities	4,600	6,633
Stockholders’ Equity
Convertible Preferred stock, par value $0.01, 15,000,000 shares authorized Series C - 96,230 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively	1	1
Common stock, par value $0.001, 250,000,000 shares authorized, 1,380,633 shares issued and outstanding as of March 31, 2024 and December 31, 2023, respectively	1	1
Additional paid in capital	689,641	689,539
Accumulated deficit	(684,331)	(682,065)
Total Stockholders’ Equity	5,312	7,476
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 9,912	$ 14,109

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2024	Dec. 31, 2023
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	15,000,000	15,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	1,380,633	1,380,633
Common stock, shares outstanding	1,380,633	1,380,633
Series C Preferred Stock [Member]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares issued	96,230	96,230
Preferred stock, shares outstanding	96,230	96,230

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Revenues
Operating Expenses:
Research and development	777	1,650
Selling, general and administrative (including $102 and $718 from stock compensation granted to officers, directors and employees during the three months ended March 31, 2024 and 2023, respectively)	2,314	2,015
Loss from Operations	3,091	3,665
Other (Income) Expense
Interest income	(142)	(164)
Interest expense		212
Change in fair value of warrant liability	(658)	(2,924)
Gain on extinguishment of debt		(533)
Unrealized loss (gain) on marketable securities	2	(29)
Other	(27)
Total Other (Income) Expense	(825)	(3,438)
Net Loss	$ (2,266)	$ (227)
Net Loss Per Share - Basic	$ (1.64)	$ (0.21)
Net Loss Per Share - Diluted	$ (1.64)	$ (0.21)
Weighted average common shares outstanding - basic	1,380,633	1,082,871
Weighted average common shares outstanding - diluted	1,380,633	1,082,871

Condensed Consolidated Statements of Operations (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Selling, General and Administrative Expenses [Member] \| Officers, Employees and Directors [Member]
Share-based payment arrangement, expense	$ 102	$ 718

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2022	$ 1	$ 1	$ 686,200	$ (674,468)	$ 11,734
Balance, shares at Dec. 31, 2022	96	1,091
Fair value of vested stock options			507		507
Net loss				(227)	(227)
Private placement of common stock			6,268		6,268
Private placement of common stock, shares		120
Initial recognition of fair value of warrant liability			(5,831)		(5,831)
Issuance of common shares for services			315		315
Issuance of common shares for services, shares		2
Issuance of common shares in settlement of vendors payable			287		287
Issuance of common shares in settlement of vendors payable, shares		16
Balance at Mar. 31, 2023	$ 1	$ 1	687,746	(674,695)	13,053
Balance, shares at Mar. 31, 2023	96	1,229
Balance at Dec. 31, 2023	$ 1	$ 1	689,539	(682,065)	7,476
Balance, shares at Dec. 31, 2023	96	1,381
Fair value of vested stock options			102		102
Net loss				(2,266)	(2,266)
Balance at Mar. 31, 2024	$ 1	$ 1	$ 689,641	$ (684,331)	$ 5,312
Balance, shares at Mar. 31, 2024	96	1,381

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (2,266)	$ (227)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock based compensation - services		176
Stock based compensation - officers, employees and board of directors	102	646
Change in fair value of warrant liability	(658)	(2,924)
Gain on extinguishment of share settled debt		(533)
Change in operating lease right-of-use assets	26	25
Unrealized loss (gain) on marketable securities	2	(29)
Changes in operating assets and liabilities:
Decrease in prepaid expenses	6	16
(Decrease) in accounts payable and accrued expenses	(1,347)	(29)
(Decrease) in operating lease liability	(28)	(27)
Net Cash Used in Operating Activities	(4,163)	(2,906)
CASH FLOWS FROM INVESTING ACTIVITIES
Sale (purchase) of investments	5,034	(6,989)
Net Cash Provided by (Used in) Investing Activities	5,034	(6,989)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from issuance of common stock and prefunded warrants		6,268
Net Cash Provided by Financing Activities		6,268
Net Increase (Decrease) in Cash	871	(3,627)
Cash at Beginning of Period	1,079	5,672	$ 5,672
Cash at End of Period	1,950	2,045	$ 1,079
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest
Income taxes
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Initial recognition of fair value of warrant liability		5,831
Fair value of common stock issued to a vendor to settle accounts payable		$ 287

Organization and Operations

3 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Operations

Note 1 – Organization and Operations

Reverse Stock Split

All share and per share information within this report have been adjusted to retroactively reflect the reverse stock-split as of the earliest period presented.

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Note 2 – Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

Liquidity

Accounting Estimates

Cash Equivalents and Short-Term Investments

Fair Value of Financial Instruments

The three levels of the fair value hierarchy are as follows:

Level 1 Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that the entity has the ability to access.

Level 3 Valuations based on inputs that are unobservable, supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

The carrying amount of the Company’s warrant liability of $394,000 and $1.1 million at March 31, 2024 and December 31, 2023, respectively, was based on Level 3 measurements.

Warrant Liability

Stock-Based Compensation

Research and Development Costs

Leases

Net Loss Per Share

The following common stock equivalents were excluded in the computation of the net loss per share because their effect is anti-dilutive:

Schedule of Anti-dilutive Securities

	March 31, 2024 (Unaudited)		March 31, 2023 (Unaudited)
Options to purchase common stock		126,265		115,598
Warrants to purchase common stock		304,962		304,962
Total anti-dilutive securities		431,227		420,560

Concentration

The Company has a significant concentration of expenses incurred and accounts payable from a single vendor, see Note 4 – Accounts Payable.

Segments

Recent Accounting Pronouncements

Fair Value of Financial Instruments

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Note 3 – Fair Value of Financial Instruments

The estimated fair values of financial instruments outstanding were as follows (in thousands):

	March 31, 2024 (Unaudited)
			Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
Short-term investments	$	7,859	$	—	$	(2	)	$	7,857
Total	$	7,859	$	—	$	(2	)	$	7,857

	December 31, 2023
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
Short-term investments	$	12,845	$	48	$	—	$	12,893
Total	$	12,845	$	48	$	—	$	12,893

The following table represents the Company’s fair value hierarchy for its financial assets (cash equivalents and investments) (in thousands):

	Fair Value		Level 1		Level 2		Level 3
	March 31, 2024 (Unaudited)
	Fair Value		Level 1		Level 2		Level 3
Money market funds	$	1,845	$	1,845	$	—	$	—
Corporate notes and commercial paper		7,857		—		7,857		—
Total financial assets	$	9,702	$	1,845	$	7,857	$	—

	Fair Value		Level 1		Level 2		Level 3
	December 31, 2023
	Fair Value		Level 1		Level 2		Level 3
Money market funds	$	443	$	443	$	—	$	—
Corporate notes and commercial paper		12,893		—		12,893		—
Total financial assets	$	13,336	$	443	$	12,893	$	—

	March 31, 2024			March 31, 2023
	Three Months Ending
	March 31, 2024			March 31, 2023
	(Unaudited)			(Unaudited)
Beginning balance	$	1,052		$	19
Issuance of warrants at fair value		—			5,831
Change in fair value		(658	)		(2,924	)
Extinguishment		—			—
Ending balance	$	394		$	2,926

Accounts Payable

3 Months Ended

Mar. 31, 2024

Payables and Accruals [Abstract]

Accounts Payable

Note 4 – Accounts Payable

Accounts payable consisted of the following (in thousands):

Schedule of Accounts Payable

	March 31, 2024		December 31, 2023
	(Unaudited)
Accounts payable to a third-party manufacturer	$	1,983	$	3,515
Other accounts payable		1,230		813
Total accounts payable	$	3,213	$	4,328

The Company relies on a third-party contract manufacturing operation to produce and/or test our compounds used in our potential product candidates.

Warrant Liability

3 Months Ended

Mar. 31, 2024

Warrant Liability

Warrant Liability

Note 5 – Warrant Liability

2023 Warrants

As of March 31, 2024, the fair value of the warrant liability was reduced to $393,000.

The warrant liabilities for the Common Warrants and the Placement Agents Warrants were valued using a Binomial pricing model with the following assumptions:

	Common Warrants and Placement Agents Warrants
	March 31, 2024			December 31, 2023
	(Unaudited)			(Unaudited)
Stock price	$	4.43		$	7.80
Risk-free interest rate		4.21	%		4.26	%
Expected volatility		103.9	%		115.2	%
Expected average life (in years)		4.0			4.25
Expected dividend yield		-			-
Fair value of warrants (in thousands)	$	393		$	1,050

2020 Warrants

The warrant liabilities for the 2020 warrants were valued using a Binomial pricing model with the following assumptions:

	March 31, 2024			December 31, 2023
	(Unaudited)
Stock price	$	4.43		$	7.80
Risk-free interest rate		4.21	%		4.54	%
Expected volatility		89	%		89	%
Expected life (in years)		1.2			1.6
Expected dividend yield		-			-

Fair value of warrants (in thousands)	$	1		$	2

Stockholders’ Equity

3 Months Ended

Mar. 31, 2024

Equity [Abstract]

Stockholders’ Equity

Note 6 – Stockholders’ Equity

The Company’s authorized capital as of March 31, 2024 was 250,000,000 shares of common stock, par value $0.001 per share, and 15,000,000 shares of preferred stock, par value $0.01 per share.

Common Stock

Private Placement of Common Stock

Common Stock Issued for Services

Common Stock Issued for Vendor Payable

Preferred Stock

Series C Preferred Stock

At March 31, 2024 and December 31, 2023, there were 96,230 shares of series C preferred stock, par value $0.01 per share (the “Series C Preferred Stock”) issued and outstanding.

Series K Preferred Stock

On February 16, 2021, the Board designated 115,000 shares of Series K preferred stock, par value $.01 (the “Series K Preferred Stock”).

As of March 31, 2024 and December 31, 2023, there were no shares of Series K Preferred stock issued and outstanding.

Warrants and Options

Common Stock Warrants

Stock warrant transactions for the three months ended March 31, 2024 were as follows:

Schedule of Warrant Activity

	Number of		Weighted Average
	Warrants		Exercise Price
Warrants outstanding at December 31, 2023		304,962	$	63.30
Granted		-		-
Forfeited/cancelled		-		-
Exercised		-		-
Warrants outstanding at March 31, 2024		304,962	$	63.30
Warrants exercisable at March 31, 2024		304,962	$	63.30

As of March 31, 2024, all issued and outstanding warrants are fully vested. The warrants had an exercise price greater than the market price, which resulted in no intrinsic value.

Warrants outstanding as of March 31, 2024 are exercisable as follows:

		Warrants Outstanding						Warrants Exercisable
Range of Exercise Price		Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$	10.50		1,867		1.3	$	10.50		1,867	$	10.50
	30.00 – 37.50		229,666		4.3		30.42		229,666		30.42
	165		73,429		1.9		165.00		73,429		165.00
			304,962						304,962

Common Stock Options

Common stock option transactions for the three months ended March 31, 2024 were as follows:

Schedule of Options Activity

	Number of		Weighted Average
	Options		Exercise Price
Options outstanding at December 31, 2023		126,265	$	39.60
Granted		—		—
Forfeited/cancelled		—		—
Exercised		—		—
Options outstanding at March 31, 2024		126,265	$	39.60
Options exercisable at March 31, 2024		123,487	$	40.25

The Company is recognizing the corresponding stock compensation expense for options granted to certain consultants, employees, officers and directors based upon their vesting term.

Schedule of Stock Granted Assumptions

Stock price	$	0.85
Risk-free interest rate		3.62	%
Expected volatility		121	%
Expected life (in years)		5.3
Expected dividend yield		-

Options outstanding as of March 31, 2024 are exercisable as follows:

		Options Outstanding						Options Exercisable
Range of Exercise Price		Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$	10.50		16,666		9.1	$	10.50		13,888	$	10.50
	25.50		66,667		8.8		25.50		66,667		25.50
	74.40		42,932		8.3		74.40		42,932		74.40
			126,265						123,487

There was no intrinsic value of the outstanding options as of March 31, 2024 as the exercise price of these options was greater than the market price.

Commitments and Contingencies

3 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 7 – Commitments and Contingencies

Litigation

	●	On November 14, 2023, former interim Chief Executive Officer, Dr. Greg Berk filed a lawsuit alleging that GT Biopharma discriminated and retaliated against Berk for engaging in protected whistleblowing activity in violation of the Sarbanes Oxley Act ("SOX"). The Parties are proceeding with litigating Berk's SOX claim. GT Biopharma is vigorously defending this matter and believe it to be without merit. At this early stage in the proceedings, GT Biopharma is not able to determine the probability of the outcome of this matter or a range of reasonably expected losses, if any.

	●	On May 13, 2022, the Company made an arbitration demand upon Michael Handelman, its former Chief Financial Officer, asserting that he breached his fiduciary duty by misappropriating Company funds and shares of common stock, among other things. The Company seeks among other relief, monetary damages estimated at $470,000; the return of 13,903 shares of our common stock received without authorization; and an award of the Company’s attorneys’ fees and any forum and arbitration fees. As a component of Mr. Handelman’s contract with the Company, disputes shall be fully addressed and finally resolved by binding arbitration conducted by the American Arbitration Association (AAA). In connection with any such arbitration, the Company shall bear all costs not otherwise borne by a plaintiff in a court proceeding. On March 20, 2024, the Arbitrator issued an interim award in favor of the Company in the amount of $409,000 and directed Mr. Handelman to return the disputed 13,903 shares of common stock . The Arbitrator also awarded the Company its attorney fees and forum costs in an amount to be determined at the time of the final award.

	●	On May 24, 2023, TWF Global, LLC (“TWF”) filed a Complaint in the California Superior Court for the County of Los Angeles naming the Company as defendant. The Complaint alleges that TWF is the holder of two Convertible Promissory Notes (“Notes”) and that the Company did not deliver shares of common stock due on conversion in February 2021. TWF was seeking per diem liquidated damages based on the terms of alleged Notes. On July 14, 2023, the Company filed a motion to dismiss for improper forum because the terms of the Notes, as alleged, require disputes to be filed in New York state and federal courts. TWF voluntarily dismissed its Complaint before the California Superior Court of Los Angeles without prejudice. The Company subsequently filed a Summons and Complaint for Interpleader against TWF and Z One LLC before the Supreme Court of the State of New York County of New York, asking the Supreme Court to determine if the Company’s shares of common stock are properly registered to TWF or Z One LLC, as both of these entities have made conflicting demands for registration of the shares of common stock. On February 5, 2024, the Company filed a motion for entry of default against TWF, seeking an order directing the Company to register the shares of common stock in the name of Z-One and that the Company be released from all associated liability and claims. The Court has not yet ruled on the Company’s motion. The Company believes that any claims related to the Notes are without merit and will continue to defend vigorously against these claims. The Court denied the motion without prejudice, and will reconsider the motion without further briefing upon the filing of a party affidavit. Z-One has filed a concurrent motion to dismiss of the action, representing that Z-One and TWF have settled their dispute over the entitlement to GT Biopharma shares. The Company believes that any claims related to the Notes are without merit and will continue to defend vigorously against these claims.

Significant Agreements

Research and Development Agreements

Patent and License Agreements

2016 Exclusive Patent License Agreement

The Company did not incur any research and development expense relating to the 2016 Exclusive Patent License Agreement for the three months ended March 31, 2024 and 2023, respectively.

2021 Patent License Agreement

The Company did not incur any research and development expense relating to the 2021 Patent License Agreement for the three months ended March 31, 2024 and 2023, respectively.

Operating Leases

3 Months Ended

Mar. 31, 2024

Operating Leases

Operating Leases

Note 8 – Operating Leases

As a result of these lease agreements, the Company recognized ROU asset and liability in the aggregate of $260,294.

Other information related to leases and future minimum lease payments under non-cancellable operating leases were as follows:

	March 31, 2024 (Unaudited)			March 31, 2023 (Unaudited)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	30		$	30
Weighted-average remaining lease term (in years):
Operating leases		0.25			1.5
Weighted-average discount rate:
Operating leases		10	%		10	%

Future minimum lease payments under non-cancellable operating leases were as follows (in thousands):

	March 31, 2024 (Unaudited)
Within one year	$	30
After one year and within two years		-
After two years and within three years		-
Thereafter		-
Total future minimum lease payments		30
Less – Discount		(0	)
Lease liability	$	30

Subsequent Event

3 Months Ended

Mar. 31, 2024

Subsequent Events [Abstract]

Subsequent Event

Note 9 – Subsequent Event

Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Basis of Presentation and Principles of Consolidation

Basis of Presentation and Principles of Consolidation

Liquidity

Liquidity

Accounting Estimates

Accounting Estimates

Cash Equivalents and Short-Term Investments

Cash Equivalents and Short-Term Investments

Fair Value of Financial Instruments

Fair Value of Financial Instruments

The three levels of the fair value hierarchy are as follows:

Level 1 Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that the entity has the ability to access.

Level 3 Valuations based on inputs that are unobservable, supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

The carrying amount of the Company’s warrant liability of $394,000 and $1.1 million at March 31, 2024 and December 31, 2023, respectively, was based on Level 3 measurements.

Warrant Liability

Warrant Liability

Stock-Based Compensation

Stock-Based Compensation

Research and Development Costs

Research and Development Costs

Leases

Leases

Net Loss Per Share

Net Loss Per Share

The following common stock equivalents were excluded in the computation of the net loss per share because their effect is anti-dilutive:

Schedule of Anti-dilutive Securities

	March 31, 2024 (Unaudited)		March 31, 2023 (Unaudited)
Options to purchase common stock		126,265		115,598
Warrants to purchase common stock		304,962		304,962
Total anti-dilutive securities		431,227		420,560

Concentration

Concentration

The Company has a significant concentration of expenses incurred and accounts payable from a single vendor, see Note 4 – Accounts Payable.

Segments

Segments

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Schedule of Anti-dilutive Securities

The following common stock equivalents were excluded in the computation of the net loss per share because their effect is anti-dilutive:

Schedule of Anti-dilutive Securities

	March 31, 2024 (Unaudited)		March 31, 2023 (Unaudited)
Options to purchase common stock		126,265		115,598
Warrants to purchase common stock		304,962		304,962
Total anti-dilutive securities		431,227		420,560

Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Schedule of Estimated Fair Value of Financial Instrument

The estimated fair values of financial instruments outstanding were as follows (in thousands):

	March 31, 2024 (Unaudited)
			Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
Short-term investments	$	7,859	$	—	$	(2	)	$	7,857
Total	$	7,859	$	—	$	(2	)	$	7,857

	December 31, 2023
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
Short-term investments	$	12,845	$	48	$	—	$	12,893
Total	$	12,845	$	48	$	—	$	12,893

Schedule of Fair Value Hierarchy Financial Assets

The following table represents the Company’s fair value hierarchy for its financial assets (cash equivalents and investments) (in thousands):

	Fair Value		Level 1		Level 2		Level 3
	March 31, 2024 (Unaudited)
	Fair Value		Level 1		Level 2		Level 3
Money market funds	$	1,845	$	1,845	$	—	$	—
Corporate notes and commercial paper		7,857		—		7,857		—
Total financial assets	$	9,702	$	1,845	$	7,857	$	—

	Fair Value		Level 1		Level 2		Level 3
	December 31, 2023
	Fair Value		Level 1		Level 2		Level 3
Money market funds	$	443	$	443	$	—	$	—
Corporate notes and commercial paper		12,893		—		12,893		—
Total financial assets	$	13,336	$	443	$	12,893	$	—

Schedule of Warrant Liability Transactions

	March 31, 2024			March 31, 2023
	Three Months Ending
	March 31, 2024			March 31, 2023
	(Unaudited)			(Unaudited)
Beginning balance	$	1,052		$	19
Issuance of warrants at fair value		—			5,831
Change in fair value		(658	)		(2,924	)
Extinguishment		—			—
Ending balance	$	394		$	2,926

Accounts Payable (Tables)

3 Months Ended

Mar. 31, 2024

Payables and Accruals [Abstract]

Schedule of Accounts Payable

Accounts payable consisted of the following (in thousands):

Schedule of Accounts Payable

	March 31, 2024		December 31, 2023
	(Unaudited)
Accounts payable to a third-party manufacturer	$	1,983	$	3,515
Other accounts payable		1,230		813
Total accounts payable	$	3,213	$	4,328

Warrant Liability (Tables)

3 Months Ended

Mar. 31, 2024

2023 Warrants [Member]

Short-Term Debt [Line Items]

Schedule of Derivative Liabilities Assumptions

The warrant liabilities for the Common Warrants and the Placement Agents Warrants were valued using a Binomial pricing model with the following assumptions:

	Common Warrants and Placement Agents Warrants
	March 31, 2024			December 31, 2023
	(Unaudited)			(Unaudited)
Stock price	$	4.43		$	7.80
Risk-free interest rate		4.21	%		4.26	%
Expected volatility		103.9	%		115.2	%
Expected average life (in years)		4.0			4.25
Expected dividend yield		-			-
Fair value of warrants (in thousands)	$	393		$	1,050

2020 Warrants [Member]

Short-Term Debt [Line Items]

Schedule of Derivative Liabilities Assumptions

The warrant liabilities for the 2020 warrants were valued using a Binomial pricing model with the following assumptions:

	March 31, 2024			December 31, 2023
	(Unaudited)
Stock price	$	4.43		$	7.80
Risk-free interest rate		4.21	%		4.54	%
Expected volatility		89	%		89	%
Expected life (in years)		1.2			1.6
Expected dividend yield		-			-

Fair value of warrants (in thousands)	$	1		$	2

Stockholders’ Equity (Tables)

3 Months Ended

Mar. 31, 2024

Class of Warrant or Right [Line Items]

Schedule of Warrant Activity

Stock warrant transactions for the three months ended March 31, 2024 were as follows:

Schedule of Warrant Activity

	Number of		Weighted Average
	Warrants		Exercise Price
Warrants outstanding at December 31, 2023		304,962	$	63.30
Granted		-		-
Forfeited/cancelled		-		-
Exercised		-		-
Warrants outstanding at March 31, 2024		304,962	$	63.30
Warrants exercisable at March 31, 2024		304,962	$	63.30

Schedule of Options Activity

Common stock option transactions for the three months ended March 31, 2024 were as follows:

Schedule of Options Activity

	Number of		Weighted Average
	Options		Exercise Price
Options outstanding at December 31, 2023		126,265	$	39.60
Granted		—		—
Forfeited/cancelled		—		—
Exercised		—		—
Options outstanding at March 31, 2024		126,265	$	39.60
Options exercisable at March 31, 2024		123,487	$	40.25

Schedule of Stock Granted Assumptions

Stock price	$	0.85
Risk-free interest rate		3.62	%
Expected volatility		121	%
Expected life (in years)		5.3
Expected dividend yield		-

Schedule of Options Outstanding and Options Exercisable

Options outstanding as of March 31, 2024 are exercisable as follows:

		Options Outstanding						Options Exercisable
Range of Exercise Price		Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$	10.50		16,666		9.1	$	10.50		13,888	$	10.50
	25.50		66,667		8.8		25.50		66,667		25.50
	74.40		42,932		8.3		74.40		42,932		74.40
			126,265						123,487

Warrants [Member]

Class of Warrant or Right [Line Items]

Schedule of Warrants Outstanding and Exercisable

Warrants outstanding as of March 31, 2024 are exercisable as follows:

		Warrants Outstanding						Warrants Exercisable
Range of Exercise Price		Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$	10.50		1,867		1.3	$	10.50		1,867	$	10.50
	30.00 – 37.50		229,666		4.3		30.42		229,666		30.42
	165		73,429		1.9		165.00		73,429		165.00
			304,962						304,962

Operating Leases (Tables)

3 Months Ended

Mar. 31, 2024

Operating Leases

Schedule of Other Information Related Leases Under Non-Cancellable

Other information related to leases and future minimum lease payments under non-cancellable operating leases were as follows:

	March 31, 2024 (Unaudited)			March 31, 2023 (Unaudited)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	30		$	30
Weighted-average remaining lease term (in years):
Operating leases		0.25			1.5
Weighted-average discount rate:
Operating leases		10	%		10	%

Schedule of Future Minimum Lease Payments

Future minimum lease payments under non-cancellable operating leases were as follows (in thousands):

	March 31, 2024 (Unaudited)
Within one year	$	30
After one year and within two years		-
After two years and within three years		-
Thereafter		-
Total future minimum lease payments		30
Less – Discount		(0	)
Lease liability	$	30

Organization and Operations (Details Narrative) - shares	3 Months Ended
	Mar. 31, 2024	Feb. 02, 2024	Feb. 01, 2024	Dec. 31, 2023
Revers stock split ratio	On February 1, 2024, the Company announced a reverse stock-split of its common stock, par value $0.001 per share, at a ratio of 1 for 30. The reverse stock-split became effective on February 2, 2024. The Company’s common stock began trading on a reverse stock-split-adjusted basis on The Nasdaq Capital Market on February 5, 2024 under the existing trading symbol “GTBP.”
Common stock, shares outstanding	1,380,633			1,380,633
Common stock, shares authorized	250,000,000			250,000,000
Common Stock [Member]
Common stock, shares outstanding		1,380,633	41,419,000

Schedule of Anti-dilutive Securities (Details) - shares	3 Months Ended
Schedule of Anti-dilutive Securities (Details) - shares	Mar. 31, 2024	Mar. 31, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities	431,227	420,560
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities	126,265	115,598
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities	304,962	304,962

Summary of Significant Accounting Policies (Details Narrative) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Net loss	$ (2,266,000)	$ (227,000)
Cash used in operating activities	(4,163,000)	(2,906,000)
Cash on hand and short term investment	9,800,000
Working capital	5,300,000
Stockholders' equity	5,312,000	$ 13,053,000	$ 7,476,000	$ 11,734,000
Cash and cash equivalents, and short-term investments	9,800,000
Cash equivalents	1,800,000		443,000,000,000
Short-term investments	7,857,000		12,893,000
Derivative liability	394,000		$ 1,100,000
Maximum [Member]
Property, Plant and Equipment [Line Items]
Cash, FDIC insured amount	$ 250,000

Schedule of Estimated Fair Value of Financial Instrument (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]
Cost	$ 7,859	$ 12,845
Unrealized gains		48
Unrealized losses	(2)
Fair value	7,857	12,893
Short-Term Investments [Member]
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]
Cost	7,859	12,845
Unrealized gains		48
Unrealized losses	(2)
Fair value	$ 7,857	$ 12,893

Schedule of Fair Value Hierarchy Financial Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets	$ 9,702	$ 13,336
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets	1,845	443
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets	7,857	12,893
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets
Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets	1,845	443
Money Market Funds [Member] \| Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets	1,845	443
Money Market Funds [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets
Money Market Funds [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets
Corporate Notes and Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets	7,857	12,893
Corporate Notes and Commercial Paper [Member] \| Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets
Corporate Notes and Commercial Paper [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets	7,857	12,893
Corporate Notes and Commercial Paper [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets

Schedule of Warrant Liability Transactions (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Beginning balance	$ 1,052	$ 19
Issuance of warrants at fair value		5,831
Change in fair value	(658)	(2,924)
Extinguishment
Ending balance	$ 394	$ 2,926

Fair Value of Financial Instruments (Details Narrative) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Fair value of warrant liability	$ (658,000)	$ (2,924,000)
Warrant [Member]
Fair value of warrant liability	$ 394,000

Schedule of Accounts Payable (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Accounts payable to a third-party manufacturer	$ 1,983	$ 3,515
Other accounts payable	1,230	813
Total accounts payable	$ 3,213	$ 4,328

Accounts Payable (Details Narrative) - USD ($)	3 Months Ended
Accounts Payable (Details Narrative) - USD ($)	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Oct. 31, 2020
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Research and development expenses	$ 777,000	$ 1,650,000
Third Party Product Manufacturer [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Accounts payable	2,000,000.0		$ 3,500,000
Research and development expenses	268,000
Cash	$ 1,800,000
Master Services Agreement [Member] \| Research and Development Expense [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Accounts payable				$ 15,600,000

Schedule of Derivative Liabilities Assumptions (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024 USD ($) $ / shares	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) $ / shares
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of warrants	$ (658)	$ (2,924)
2023 Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of warrants	393		$ 1,050
2020 Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of warrants	$ 1		$ 2
Measurement Input, Share Price [Member] \| 2023 Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants measurement input \| $ / shares	4.43		7.80
Measurement Input, Share Price [Member] \| 2020 Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants measurement input \| $ / shares	4.43		7.80
Measurement Input, Risk Free Interest Rate [Member] \| 2023 Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants measurement input	4.21		4.26
Measurement Input, Risk Free Interest Rate [Member] \| 2020 Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants measurement input	4.21		4.54
Measurement Input, Price Volatility [Member] \| 2023 Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants measurement input	103.9		115.2
Measurement Input, Price Volatility [Member] \| 2020 Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants measurement input	89		89
Measurement Input, Expected Term [Member] \| 2023 Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected life (in years)	4 years		4 years 3 months
Measurement Input, Expected Term [Member] \| 2020 Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected life (in years)	1 year 2 months 12 days		1 year 7 months 6 days
Measurement Input, Expected Dividend Rate [Member] \| 2023 Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants measurement input
Measurement Input, Expected Dividend Rate [Member] \| 2020 Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants measurement input

Warrant Liability (Details Narrative) - USD ($)	3 Months Ended
Warrant Liability (Details Narrative) - USD ($)	Mar. 31, 2024	Mar. 31, 2023	Jan. 04, 2023
Volatility amount utilized in the value calculation percentage	121.00%
Change in fair value of the warrant liability	$ 393,000
Accounting Standards Update 2016-02 [Member]
Recognized gain of change in fair value of derivative liability	$ 658,000	$ 2,900,000
Common Warrants [Member] \| Maximum [Member]
Warrants to purchase			216,667
Placement Agents Warrants [Member] \| Maximum [Member]
Warrants to purchase			13,000
Warrant [Member]
Volatility amount utilized in the value calculation percentage	100.00%
Purchase Warrant [Member]
Warrant fair value	$ 5,800,000

Schedule of Warrant Activity (Details)	3 Months Ended
Schedule of Warrant Activity (Details)	Mar. 31, 2024 $ / shares shares
Equity [Abstract]
Warrants outstanding, beginning balance \| shares	304,962
Weighted average exercise price, beginning balance \| $ / shares	$ 63.30
Number of warrants, granted \| shares
Weighted average exercise price, granted \| $ / shares
Number of warrants, forfeited \| shares
Weighted average exercise price, forfeited \| $ / shares
Number of warrants, exercised \| shares
Weighted average exercise price, exercised \| $ / shares
Warrants outstanding, beginning balance \| shares	304,962
Weighted average exercise price, beginning balance \| $ / shares	$ 63.30
Warrants exercisable, ending balance \| shares	304,962
Exercisable, ending balance \| $ / shares	$ 63.30

Schedule of Warrants Outstanding and Exercisable (Details) - $ / shares	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Class of Warrant or Right [Line Items]
Number of warrants outstanding	304,962	304,962
Warrants [Member]
Class of Warrant or Right [Line Items]
Number of warrants outstanding	304,962
Number of warrants exercisable	304,962
Warrants [Member] \| Range One [Member]
Class of Warrant or Right [Line Items]
Range of lower excercise price	$ 10.50
Number of warrants outstanding	1,867
Warrants outstanding, weighted average remaining contractual life (years)	1 year 3 months 18 days
Warrants outstanding, weighted average exercise price	$ 10.50
Number of warrants exercisable	1,867
Warrants exercisable, weighted average exercise price	$ 10.50
Warrants [Member] \| Range Two [Member]
Class of Warrant or Right [Line Items]
Number of warrants outstanding	229,666
Warrants outstanding, weighted average remaining contractual life (years)	4 years 3 months 18 days
Warrants outstanding, weighted average exercise price	$ 30.42
Number of warrants exercisable	229,666
Warrants exercisable, weighted average exercise price	$ 30.42
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit	37.50
Warrants [Member] \| Range Two [Member] \| Minimum [Member]
Class of Warrant or Right [Line Items]
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit	$ 30.00
Warrants [Member] \| Range Three [Member]
Class of Warrant or Right [Line Items]
Number of warrants outstanding	73,429
Warrants outstanding, weighted average remaining contractual life (years)	1 year 10 months 24 days
Warrants outstanding, weighted average exercise price	$ 165.00
Number of warrants exercisable	73,429
Warrants exercisable, weighted average exercise price	$ 165.00
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit	$ 165

Schedule of Options Activity (Details)	3 Months Ended
Schedule of Options Activity (Details)	Mar. 31, 2024 $ / shares shares
Equity [Abstract]
Number of Options outstanding, Beginning balance \| shares	126,265
Weighted-Average Exercise Price, Options Outstanding Beginning balance \| $ / shares	$ 39.60
Number of Options, Granted \| shares
Weighted-Average Exercise Price, Granted \| $ / shares
Number of Options, Forfeited/cancelled \| shares
Weighted-Average Exercise Price, Forfeited/cancelled \| $ / shares
Number of Options, Exercised \| shares
Weighted-Average Exercise Price, Exercised \| $ / shares
Number of Options outstanding, Ending balance \| shares	126,265
Weighted-Average Exercise Price, Options Outstanding Ending balance \| $ / shares	$ 39.60
Number of Options Exercisable, Ending balance \| shares	123,487
Weighted-Average Exercise Price, Options Exercisable Ending balance \| $ / shares	$ 40.25

Schedule of Stock Granted Assumptions (Details)	3 Months Ended
Schedule of Stock Granted Assumptions (Details)	Mar. 31, 2024 $ / shares
Equity [Abstract]
Stock price	$ 0.85
Risk-free interest rate	3.62%
Expected volatility	121.00%
Expected life (in years)	5 years 3 months 18 days
Expected dividend yield

Schedule of Options Outstanding and Options Exercisable (Details) - $ / shares		3 Months Ended
	Jan. 27, 2023	Mar. 31, 2024	Dec. 31, 2023
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options outstanding		126,265	126,265
Options outstanding, weighted average remaining contractual life (years)	10 years
Options outstanding, weighted average exercise price		$ 39.60	$ 39.60
Number of options exercisable	1,400,000	123,487
Options exercisable, weighted average exercise price	$ 25.50
Range One [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of excercise price		$ 10.50
Options outstanding		16,666
Options outstanding, weighted average remaining contractual life (years)		9 years 1 month 6 days
Options outstanding, weighted average exercise price		$ 10.50
Number of options exercisable		13,888
Options exercisable, weighted average exercise price		$ 10.50
Range Two [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of excercise price		$ 25.50
Options outstanding		66,667
Options outstanding, weighted average remaining contractual life (years)		8 years 9 months 18 days
Options outstanding, weighted average exercise price		$ 25.50
Number of options exercisable		66,667
Options exercisable, weighted average exercise price		$ 25.50
Range Three [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of excercise price		$ 74.40
Options outstanding		42,932
Options outstanding, weighted average remaining contractual life (years)		8 years 3 months 18 days
Options outstanding, weighted average exercise price		$ 74.40
Number of options exercisable		42,932
Options exercisable, weighted average exercise price		$ 74.40

Stockholders’ Equity (Details Narrative) - USD ($)						3 Months Ended
Stockholders’ Equity (Details Narrative) - USD ($)	Mar. 13, 2023	Jan. 27, 2023	Jan. 04, 2023	Jan. 04, 2023	Feb. 16, 2021	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Common stock, shares authorized						250,000,000		250,000,000
Common stock par value						$ 0.001		$ 0.001
Preferred stock, shares authorized						15,000,000		15,000,000
Preferred stock, par value						$ 0.01		$ 0.01
Direct offering						1,380,633		1,380,633
Change in fair value of warrant liability						$ (658,000)	$ (2,924,000)
Shares issued, value							$ 315,000
Issued shares for vendor payable	16,228
Fair value for vendor payable	$ 287,000
Debt securities gain	533,000
Options outstanding intrinsic value						$ 0
Purchase an aggregate		66,667
Exercise price		$ 25.50
Stock options expire		10 years
Fair value		1,400,000				123,487
Unvested options, shares						2,778	53,225
Stock compensation expense unvested options						$ 12,000	$ 1,300,000
Equity Option [Member] \| Share-Based Payment Arrangement, Tranche Three [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Options granted		$ 507,000				$ 102,000
Series C Preferred Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Preferred stock, par value						$ 0.01		$ 0.01
Preferred stock, shares outstanding						96,230		96,230
Preferred stock, shares Issued						96,230		96,230
Series K Preferred Stocks [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Preferred stock, par value					$ 0.01
Preferred stock shares designated					115,000
Convertible shares issuable					100
Series K Preferred Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Preferred stock, shares outstanding						0		0
Preferred stock, shares Issued						0		0
Board Of Directors Employees And Consultants [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shares issued							2,449
Shares issued, value							$ 315,000
Common Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shares issued							2,000
Shares issued, value
Issued shares for vendor payable							16,000
Accounts payable	$ 820,000
Preferred stock shares designated							120,000
Common Warrant and Placement Agent Warrant [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Change in fair value of warrant liability			$ 5,800,000
Purchase Agreement [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Proceeds from private placement				$ 6,500,000
Other offering expenses				$ 232,000
Purchase Agreement [Member] \| Pre Funded Warrants [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Exercise price of warrant			$ 0.003	$ 0.003
Purchase Agreement [Member] \| Common Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Common stock par value			$ 0.001	$ 0.001
Direct offering			120,000	120,000
Purchase Agreement [Member] \| Prefunded Warrant [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Purchase of warrants			96,667	96,667
Purchase Agreement [Member] \| Common Warrants [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Purchase of warrants			216,667	216,667
Exercise price of warrant			$ 30.00	$ 30.00
Purchase Agreement [Member] \| Placement Agents Warrants [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Purchase of warrants			13,000	13,000
Exercise price of warrant			$ 37.50	$ 37.50
Purchase Agreement [Member] \| Common Shares and Common Warrants [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Price per share			30.00	30.00
Purchase Agreement [Member] \| Pre-Funded Warrants and Common Warrants [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Price per share			$ 29.997	$ 29.997

Commitments and Contingencies (Details Narrative) - USD ($) shares in Thousands				3 Months Ended
	Mar. 20, 2024	May 13, 2022	Mar. 26, 2021	Mar. 31, 2024	Mar. 31, 2023
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		$ 470,000
Treasury Stock, Common, Shares		13,903
Shares return, value	$ 409,000,000
Shares return	13,903
Research and development expense				$ 777,000	$ 1,650,000
Aggregate research and development expense				2,100,000
Scientific Research Agreement [Member]
Loss Contingencies [Line Items]
Research and development expense				0	192,000
2016 Patent Exclusive License Agreement [Member]
Loss Contingencies [Line Items]
Research and development expense				0	0
Proceeds from upfront amount				200,000
Maintenance fee				100,000
Performance milestone payments				3,100,000
Sales milestone payments				1,000,000.0
Gross sales				250,000,000
Sales revenue				5,000,000.0
Cumulative gross sales				$ 500,000,000
2016 Patent Exclusive License Agreement [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Net sales percentage				4.00%
Annual royalty payments				$ 250,000
2016 Patent Exclusive License Agreement [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Net sales percentage				6.00%
Annual royalty payments				$ 5,000,000.0
2021 Patent License Agreement [Member]
Loss Contingencies [Line Items]
Research and development expense				$ 0	$ 0
Maintenance fee			$ 2,000,000.0
Annual royalty payments			250,000
Performance milestone payments			3,100,000
Sales milestone payments			1,000,000.0
Gross sales			250,000,000
Sales revenue			5,000,000.0
Cumulative gross sales			500,000,000
Upfront license fee			20,000
License maintenance fee, receivable			$ 5,000
2021 Patent License Agreement [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Net sales percentage			2.50%
2021 Patent License Agreement [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Net sales percentage			5.00%

Schedule of Other Information Related Leases Under Non-Cancellable (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Leases
Operating cash flows from operating leases	$ 30	$ 30
Weighted average remaining lease term operating leases	3 months	1 year 6 months
Weighted average discount rate operating leases	10.00%	10.00%

Schedule of Future Minimum Lease Payments (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Operating Leases
Within one year	$ 30
After one year and within two years
After two years and within three years
Thereafter
Total future minimum lease payments	30
Less – Discount	0
Lease liability	$ 30

Operating Leases (Details Narrative)		3 Months Ended
Operating Leases (Details Narrative)	Nov. 19, 2021 USD ($) ft²	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Oct. 31, 2023 USD ($)	Feb. 08, 2022 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Operating lease, right of use asset		$ 27,000		$ 53,000
Operating lease liability		30,000
Rent expense		25,000	$ 29,000
Lease Agreements [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Lessee, operating sublease, option to extend	commencement date of January 1, 2022 and maturing on June 30, 2024.
Operating lease, right of use asset	$ 247,294	260,294
Operating lease liability		$ 260,294				$ 13,000
Written off right of use asset					$ 6,000
Lease Agreements [Member] \| Restricted Stock Units (RSUs) [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Area of land \| ft²	4,500

Subsequent Event (Details Narrative) - USD ($)		3 Months Ended
Subsequent Event (Details Narrative) - USD ($)	Apr. 30, 2024	Mar. 31, 2023
Subsequent Event [Line Items]
Stock Issued During Period, Value, New Issues		$ 6,268,000
Common Stock [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues		120,000
Stock Issued During Period, Value, New Issues
Common Stock [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues	36,018
Stock Issued During Period, Value, New Issues	$ 278,500