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

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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 September 30, 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 001-38114

AVENUE THERAPEUTICS, INC.

(Exact name of registrant as specified in its charter)

Delaware	47-4113275
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

1111 Kane Concourse, Suite 301, Bay Harbor Islands, FL 33154

(Address of principal executive offices and zip code)

(781) 652‑4500

(Registrant’s telephone number, including area code)

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

Title of Class	Trading Symbol(s)	Exchange Name
Common Stock	ATXI	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 Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See definition 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 ☒

Indicate the number of shares outstanding of each of the registrant’s classes of common stock, as of the latest practicable date.

Class of Common Stock		Outstanding Shares as of November 11, 2024
Common Stock, $0.0001 par value		1,911,633

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AVENUE THERAPEUTICS, INC.

Form 10‑Q

For the Quarter Ended September 30, 2024

Table of Contents

		Page No.
PART I. FINANCIAL INFORMATION

Item 1.	Unaudited Condensed Consolidated Financial Statements

	Unaudited Condensed Consolidated Balance Sheets as of September 30, 2024 and December 31, 2023	1

	Unaudited Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2024 and 2023	2

	Unaudited Condensed Consolidated Statements of Stockholders’ Equity (Deficit) for the three and nine months ended September 30, 2024 and 2023	3

	Unaudited Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2024 and 2023	4

	Notes to Unaudited Condensed Consolidated Financial Statements	5

Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	10

Item 3.	Quantitative and Qualitative Disclosures About Market Risk	15

Item 4.	Controls and Procedures	15

PART II. OTHER INFORMATION

Item 1.	Legal Proceedings	16

Item 1A.	Risk Factors	16

Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	16

Item 3.	Defaults Upon Senior Securities	16

Item 4.	Mine Safety Disclosures	16

Item 5.	Other Information	16

Item 6.	Exhibits	17

Signatures		18

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AVENUE THERAPEUTICS, INC.

Unaudited Condensed Consolidated Balance Sheets

($ in thousands, except share and per share amounts)

	*September 30,*			*December 31,*
	*2024*			*2023*

ASSETS
Current assets:
Cash and cash equivalents	$	2,597		$	1,783
Prepaid expenses and other current assets		28			67
Total assets	$	2,625		$	1,850

LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities:
Accounts payable and accrued expenses	$	427		$	287
Accounts payable and accrued expenses - related party		517			323
Warrant liability		29			586
Total current liabilities		973			1,196

Total liabilities		973			1,196

Commitments and contingencies

Stockholders’ equity
Preferred stock ($0.0001 par value), 2,000,000 shares authorized
Class A Preferred Stock, 250,000 shares issued and outstanding as of September 30, 2024 and December 31, 2023		—			—
Common stock ($0.0001 par value), 200,000,000 and 75,000,000 shares authorized as of September 30, 2024 and December 31, 2023, respectively
Common shares, 1,604,158 and 341,324 shares issued and outstanding as of September 30, 2024 and December 31, 2023, respectively		—			3
Additional paid-in capital		103,646			92,507
Accumulated deficit		(101,036	)		(90,928	)
Total stockholders’ equity attributed to the Company		2,610			1,582

Non-controlling interests		(958	)		(928	)
Total stockholders’ equity		1,652			654
Total liabilities and stockholders’ equity	$	2,625		$	1,850

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

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AVENUE THERAPEUTICS, INC.

Unaudited Condensed Consolidated Statements of Operations

($ in thousands, except share and per share amounts)

	*For the Three Months Ended September 30,*						*For the Nine Months Ended September 30,*
	*2024*			*2023*			*2024*			*2023*
Operating expenses:
Research and development	$	2,327		$	907		$	6,080		$	5,149
Research and development – licenses acquired		—			—			—			4,230
General and administrative		829			1,161			3,607			3,042
Loss from operations		(3,156	)		(2,068	)		(9,687	)		(12,421	)

Other income (expense):
Interest income		51			9			152			104
Financing costs – warrant liabilities		—			—			—			(332	)
Loss on settlement of common stock warrant liabilities		—			—			(759	)		—
Change in fair value of warrant liabilities		18			2,572			157			1,544
Total other income (expense)		69			2,581			(450	)		1,316
Net income (loss)	$	(3,087	)	$	513		$	(10,137	)	$	(11,105	)

Net loss attributable to non-controlling interests		(11	)		(13	)		(29	)		(88	)
Net income (loss) attributable to Avenue	$	(3,076	)	$	526		$	(10,108	)	$	(11,017	)

Net income (loss) attributable to common stockholders	$	(3,076	)	$	526		$	(18,918	)	$	(11,017	)

Net income (loss) per common share attributable to common stockholders, basic and diluted	$	(1.92	)	$	4.86		$	(17.27	)	$	(115.55	)

Weighted average number of common shares outstanding, basic and diluted		1,600,189			108,210			1,095,180			95,348

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

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AVENUE THERAPEUTICS, INC.

Unaudited Condensed Consolidated Statement of Changes in Stockholders’ Equity (Deficit)

($ in thousands, except share amounts)

*Three months ended September 30, 2024*

	*Class A Preferred*								*Additional*					*Non-*			*Total*
	*Shares*				*Common Shares*				*Paid-in*		*Accumulated*			*Controlling*			*Stockholders’*
	*Shares*		*Amount*		*Shares*		*Amount*		*Capital*		*Deficit*			*Interests*			*Equity (Deficit)*
Balance at June 30, 2024		250,000	$	—		1,189,724	$	—	$	102,724	$	(97,960	)	$	(937	)	$	3,827
Share based compensation		—		—		—		—		331		—			—			331
Common shares issuable - Founders Agreement		—		—		4,023		—		14		—			—			14
Exercise of warrants		—		—		253,500		—		—		—			—			—
Issuance of common stock, net of offering costs under open market sales agreement (ATM)		—		—		160,934		—		567		—			—			567
Non-controlling interest in subsidiaries		—		—		—		—		10		—			(10	)		—
Net loss attributable to non-controlling interest		—		—		—		—		—		—			(11	)		(11	)
Net loss attributable to common stockholders		—		—		—		—		—		(3,076	)		—			(3,076	)
Balance at September 30, 2024		250,000	$	—		1,608,181	$	—	$	103,646	$	(101,036	)	$	(958	)	$	1,652

*Nine Months Ended September 30, 2024*

	*Class A Preferred*									*Additional*						*Non-*			*Total*
	*Shares*				*Common Shares*					*Paid-in*			*Accumulated*			*Controlling*			*Stockholders’*
	*Shares*		*Amount*		*Shares*		*Amount*			*Capital*			*Deficit*			*Interests*			*Equity (Deficit)*
Balance at December 31, 2023		250,000	$	—		341,324	$	3		$	92,507		$	(90,928	)	$	(928	)	$	654
Share based compensation		—		—		283		—			714			—			—			714
Common shares issuable - Founders Agreement		—		—		4,023		—			(357	)		—			—			(357	)
Issuance of common stock to Fortress		—		—		53,586		—			543			—			—			543
Loss on settlement of common stock warrant liabilities		—		—		—		—			1,159			—			—			1,159
Exercise of warrants		—		—		876,806		1			9,420			—			—			9,421
Warrant inducement offering costs		—		—		—		—			(1,207	)		—			—			(1,207	)
Issuance of common stock, net of offering costs under open market sales agreement (ATM)		—		—		245,617		—			862			—			—			862
Reverse split (1-for-75)		—		—		86,542		(4	)		4			—			—			—
Non-controlling interest in subsidiaries		—		—		—		—			1			—			(1	)		—
Net loss attributable to non-controlling interest		—		—		—		—			—			—			(29	)		(29	)
Net loss attributable to common stockholders		—		—		—		—			—			(10,108	)		—			(10,108	)
Balance at September 30, 2024		250,000	$	—		1,608,181	$	—		$	103,646		$	(101,036	)	$	(958	)	$	1,652

*Three months ended September 30, 2023*

	*Class A Preferred*								*Additional*					*Non-*			*Total*
	*Shares*				*Common Shares*				*Paid-in*		*Accumulated*			*Controlling*			*Stockholders’*
	*Shares*		*Amount*		*Shares*		*Amount*		*Capital*		*Deficit*			*Interests*			*Equity (Deficit)*
Balance at June 30, 2023		250,000	$	—		105,630	$	1	$	86,757	$	(92,094	)	$	(810	)	$	(6,146	)
Share based compensation		—		—		—		—		561		—			—			561
Issuance of common stock for license expense		—		—		3,688		—		—		—			—			—
Shares issued in a private placement offering		—		—		10,227		—		550		—			—			550
Non-controlling interest in subsidiaries		—		—		—		—		49		—			(49	)		—
Net loss attributable to non-controlling interest		—		—		—		—		—		—			(13	)		(13	)
Net loss attributable to common stockholders		—		—		—		—		—		526			—			526
Balance at September 30, 2023		250,000	$	—		119,545	$	1	$	87,917	$	(91,568	)	$	(872	)	$	(4,522	)

*Nine Months Ended September 30, 2023*

	*Class A Preferred*								*Additional*					*Non-*			*Total*
	*Shares*				*Common Shares*				*Paid-in*		*Accumulated*			*Controlling*			*Stockholders’*
	*Shares*		*Amount*		*Shares*		*Amount*		*Capital*		*Deficit*			*Interests*			*Equity (Deficit)*
Balance at December 31, 2022		250,000	$	—		63,671	$	—	$	84,456	$	(80,551	)	$	(639	)	$	3,266
Share based compensation		—		—		—		—		599		—			—			599
Issuance of common stock to Fortress		—		—		4,997		—		72		—			—			72
Issuance of common stock and pre-funded warrants, net of offering costs - registered direct offering and private placement		—		—		5,974		1		865		—			—			866
Issuance of common stock for license expense		—		—		14,777		—		1,230		—			—			1,230
Exercise of warrants		—		—		19,899		—		—		—			—			—
Shares issued in a private placement offering		—		—		10,227		—		550								550
Non-controlling interest in subsidiaries		—		—		—		—		145		—			(145	)		—
Net loss attributable to non-controlling interest		—		—		—		—		—		—			(88	)		(88	)
Net loss attributable to common stockholders		—		—		—		—		—		(11,017	)		—			(11,017	)
Balance at September 30, 2023		250,000	$	—		119,545	$	1	$	87,917	$	(91,568	)	$	(872	)	$	(4,522	)

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

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AVENUE THERAPEUTICS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

($ in thousands)

	*For the Nine Months Ended*
	*September 30, 2024*			*September 30, 2023*
Cash flows from operating activities:
Net loss	$	(10,137	)	$	(11,105	)
Reconciliation of net loss to net cash used in operating activities:
Share based compensation		714			599
Loss on settlement of common stock warrant liabilities		759			—
Change in fair value of warrant liabilities		(157	)		(1,544	)
Issuance of common stock for licenses acquired		—			1,230
Research and development-licenses acquired, expense		—			3,000
Issuance of common stock to Fortress		543			72
Common shares issuable - Founders Agreement		(357	)		—
Changes in operating assets and liabilities:
Other receivables - related party		—			(13	)
Prepaid expenses and other current assets		39			119
Accounts payable and accrued expenses		140			511
Deferred financing costs		—			(239	)
Accounts payable and accrued expenses - related party		194			243
Net cash used in operating activities		(8,262	)		(7,127	)

Cash flows from investing activities:
Purchase of research and development licenses		—			(3,000	)
Net cash used in investing activities		—			(3,000	)

Cash flows from financing activities:
Issuance of common stock and pre-funded warrants, net of offering costs - registered direct offering and private placement		—			3,101
Shares issued in a private placement offering		—			550
Deferred financing costs		—			(71	)
Proceeds from ATM sales of common stock, net of issuance costs		862			—
Exercise of warrants		9,421			—
Warrant transaction costs		(1,207	)		—
Net cash provided by financing activities		9,076			3,580

Net change in cash and cash equivalents		814			(6,547	)
Cash and cash equivalents, beginning of period		1,783			6,708
Cash and cash equivalents, end of period	$	2,597		$	161

Supplemental cash flow information:
Unpaid financing costs	$	—		$	239
Issuance of common shares - Founders Agreement	$	543		$	—

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

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AVENUE THERAPEUTICS, INC.
NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Note 1 - Organization, Plan of Business Operations

Avenue Therapeutics, Inc. (the “Company” or “Avenue”) was incorporated in Delaware on February 9, 2015, as a wholly-owned subsidiary of Fortress Biotech, Inc. (“Fortress”). Avenue is a specialty pharmaceutical company focused on the development and commercialization of therapies for the treatment of neurologic diseases. Avenue's current product candidates include AJ201 for the treatment of spinal and bulbar muscular atrophy ("SBMA", also known as Kennedy's Disease), intravenous tramadol ("IV tramadol") for the treatment of post-operative acute pain, and BAER-101 for the treatment of epilepsy and panic disorders.

Authorized Share Increase

On January 9, 2024, stockholders holding a majority of the outstanding voting power of the Company executed and delivered to the Board of Directors of the Company a written consent approving, among other items, an increase in the number of shares of common stock, par value $0.0001 per share ("common stock"), authorized under the Company’s Third Amended and Restated Certificate of Incorporation, as amended (the “Certificate of Incorporation”), from 75,000,000 to 200,000,000 (the “Authorized Shares Increase”). On February 20, 2024, the Company filed a Certificate of Amendment to its Certificate of Incorporation (the “Certificate of Amendment”) with the Secretary of State for the State of Delaware effectuating the Authorized Shares Increase.

Going Concern

These consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") assuming the Company will continue as a going concern. The going concern assumption contemplates the realization of assets and satisfaction of liabilities in the normal course of business. However, as described below, substantial doubt about the Company’s ability to continue as a going concern exists.

The Company is not yet generating revenue, has incurred substantial operating losses since its inception and expects to continue to incur significant operating losses for the foreseeable future as it executes on its product development plan and may never become profitable. As of September 30, 2024, the Company had an accumulated deficit of $101.0 million. Due to uncertainties regarding future operations of the Company for an ongoing Phase 1b/2a trial of AJ201, a potential Phase 3 safety study for IV tramadol, and the expansion of the Company's development portfolio within neuroscience with the consummation of the transaction with Baergic Bio, Inc. ("Baergic"), the Company will need to secure additional funds through equity or debt offerings, including through at-the-market ("ATM") offerings or other potential sources, the timing of which is unknown at this time. The Company will require additional funds to cover operational expenses over the next 12 months. The Company cannot be certain that additional funding will be available to it on acceptable terms, or at all. These factors individually and collectively cause substantial doubt about the Company’s ability to continue as a going concern to exist within one year from the date of this report. The consolidated financial statements do not include any adjustments to the carrying amounts and classification of assets, liabilities, and reported expenses that may be necessary if the Company were unable to continue as a going concern.

Note 2 - Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The accompanying unaudited interim condensed financial statements include the accounts of the Company's subsidiary, Baergic. Because the Company owns less than 100% of Baergic, the Company records net loss attributable to non-controlling interests in its consolidated statements of operations equal to the percentage of the economic or ownership interest retained in Baergic by the respective non-controlling parties. The Company continually assesses whether changes to existing relationships or future transactions may result in the consolidation or deconsolidation of its' subsidiary.

Certain information and footnote disclosures normally included in the Company’s annual financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. These unaudited interim condensed financial statement results are not necessarily indicative of results to be expected for the full fiscal year or any future period. Therefore, these unaudited interim condensed financial statements should be read in conjunction with the Company’s audited financial statements and notes thereto for the fiscal year ended December 31, 2023, which were included in the Company’s Annual Report on Form 10-K (the “2023 Form 10-K”) and filed with the U.S. Securities and Exchange Commission (“SEC”) on March 18, 2024.

Segments

Operating segments are defined as components of an enterprise about which separate discrete information is available for evaluation by the chief operating decision maker, or decision-making group, in deciding how to allocate resources and assessing performance. The Company views its operations and manages its business in one operating and reportable segment.

Use of Estimates

The preparation of unaudited condensed consolidated financial statements in conformity with U.S. 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 consolidated financial statements and the reported amounts of expenses during the reporting period. Actual results could differ from those estimates.

Fair Value Measurements

The Company follows accounting guidance on fair value measurements for financial assets and liabilities measured at fair value on a recurring basis. Under the accounting guidance, fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or a liability.

The accounting guidance requires fair value measurements be classified and disclosed in one of the following three categories:

Level 1: Quoted prices in active markets for identical assets or liabilities.

Level 2: Observable inputs other than Level 1 prices for similar assets or liabilities that are directly or indirectly observable in the marketplace.

Level 3: Unobservable inputs which are supported by little or no market activity and that are financial instruments whose values are determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant judgment or estimation.

The fair value hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires management to make judgments and consider factors specific to the asset or liability.

Certain of the Company’s financial instruments are not measured at fair value on a recurring basis but are recorded at amounts that approximate their fair value due to their liquid or short-term nature, such as accounts payable, accrued expenses and other current liabilities.

Non-Controlling Interests

Non-controlling interests in consolidated entities represent the component of equity in consolidated entities held by third parties. Any change in ownership of a subsidiary while the controlling financial interest is retained is accounted for as an equity transaction between the controlling and non-controlling interests. Intercompany activity is eliminated entirely in consolidation prior to the allocation of net gain/loss attributable to non-controlling interest, which is based on ownership interests.

Net Loss per Share

Net loss per share is computed by dividing net loss attributable to common stockholders by the weighted-average number of common shares outstanding during the period. Net loss attributable to common stockholders consisted of net loss, as adjusted for deemed dividends. The Company recorded a deemed dividend of $0 and $8.8 million, respectively, for the modification of certain of its existing warrants and issuance of warrants during the three and nine months ended September 30, 2024 (see Note 7). Diluted net loss per share excludes unvested restricted stock, preferred shares and the effect of shares of common stock to be issued upon the exercise of stock options and warrants, as their inclusion would be anti-dilutive. Dividends declared are paid and set aside among the holders of shares of common stock and Class A Preferred stock pro-rata on an as-if-converted basis.

The following table sets forth the potential common shares that could potentially dilute basic income per share in the future that were not included in the computation of diluted net loss per share because to do so would have been anti-dilutive for the periods presented:

	*As of*
	*September 30,*
	*2024*		*2023*
Unvested restricted stock units/awards		235,851		1,311
Warrants		1,476,200		81,043
Options		256,474		22,474
Class A Preferred shares		223		223
Total potential dilutive effect		1,968,748		105,051

The 33,412 shares held in abeyance from the May 2024 Warrant Inducement (as defined in Note 7) as of September 30, 2024 were included in the September 30, 2024 computation of diluted net loss per share for the three and nine months ended September 30, 2024 since no additional consideration is due upon issuance of the shares.

Summary of Significant Accounting Policies

There have been no material changes in the Company’s significant accounting policies to those previously disclosed in the 2023 Form 10-K.

Accounting Standards Not Yet Adopted

In November 2023, the FASB issued ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which requires that an entity report segment information in accordance with Topic 280, Segment Reporting. The amendment in the ASU is intended to improve reportable segment disclosure requirements primarily through enhanced disclosures about significant segment expenses. The amendments in this update are effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The Company is currently evaluating the impact of the new standard on its financial statement disclosures.

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which expands disclosures in an entity’s income tax rate reconciliation table and disclosures regarding cash taxes paid both in the U.S. and foreign jurisdictions. The update will be effective for annual periods beginning after December 15, 2024. The Company is currently evaluating the impact that this guidance will have on its financial statement disclosures.

In November 2024, the FASB issued ASU No. 2024-03, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires new financial statement disclosures in tabular format, in the notes to financial statements, of specified information about certain costs and expenses. The amendments in this update do not change or remove current expense disclosure requirements. The amendments in this update are effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating the impact of the new standard on its financial statement disclosures.

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Note 3 — Licenses/Supplier Agreements

IV Tramadol License

Effective as of February 17, 2015, Fortress transferred the Revogenex license and all other rights and obligations under the IV Tramadol License Agreement to the Company, pursuant to the terms of the Founders Agreement. In connection with the terms of the IV Tramadol License Agreement, Fortress purchased an exclusive license to IV tramadol for the U.S. market from Revogenex, a privately held company in Dublin, Ireland. Fortress made an upfront payment of $2.0 million to Revogenex upon execution of the exclusive license, and on June 17, 2015, Fortress paid an additional $1.0 million to Revogenex after receiving all the assets specified in the agreement. In December 2019, $1.0 million became due to Revogenex in accordance with the Company’s submission of its NDA. In addition, under the terms of the agreement, Revogenex is eligible to receive an additional milestone payment totaling $3.0 million upon the approval of IV tramadol from the U.S. Food and Drug Administration ("FDA") as well as royalty payments on net sales of the product ranging in the high single digits to low double digits.

On October 29, 2018, the Company and Zaklady Farmaceutyczne Polpharma (“Polpharma”) extended the term of their exclusive supply agreement for drug product of IV tramadol to eight years from the date of the launch of the product. In addition, under the terms of the amended agreement, Polpharma is eligible to receive a milestone payment totaling $2.0 million upon the approval of IV tramadol from the FDA, as well as a low single digit royalty on net sales of the product for five years after launch.

Baergic Licenses

In December 2019, Baergic entered into two license agreements: (i) a license agreement (the “AZ License”) with AstraZeneca AB (“AZ”) to acquire an exclusive license to patent and related intellectual property rights pertaining to their proprietary compound Gamma-aminobutyric acid receptor A alpha 2 & 3 (GABAA α2,3) positive allosteric modulators; and (ii) a license agreement (the “CCHMC License”) with Cincinnati Children’s Hospital Medical Center (“CCHMC”) to acquire patent and related intellectual property rights pertaining to a GABA inhibitor program for neurological disorders. Baergic paid an upfront fee of $3.0 million to AZ and $0.2 million to CCHMC, as well as issued common shares of Baergic of approximately 20% and 5% of Baergic to each at the time of the license agreement, respectively.

Development milestones totaling approximately $81.5 million in the aggregate are due upon achievement of each milestone. Commercial and sales-based milestone payments totaling approximately $151 million are due upon achievement of each milestone, as well as royalty payments in the low to high single digits on any future aggregate, annual, worldwide net sales.

AnnJi License Agreement

On February 28, 2023, the Company entered into a license agreement with AnnJi Pharmaceutical Co. Ltd. ("AnnJi"), whereby the Company obtained an exclusive license (the "AnnJi License Agreement") from AnnJi for certain intellectual property rights pertaining to AJ201. Under the AnnJi License Agreement, in exchange for exclusive rights to the intellectual property underlying the AJ201 product candidates, the Company agreed to pay $3.0 million, of which $2.0 million was paid on April 27, 2023 and $1.0 million was paid on September 8, 2023. The Company is also obligated to make additional payments over the course of the AnnJi License Agreement including: reimbursement payments of up to $10.8 million in connection with the product’s Phase 1b/2a clinical trial (which AnnJi is administering with Joint Steering Committee Oversight before assigning the Investigational New Drug Application ("IND") to the Company upon such trial’s conclusion, and which is reflective of market pricing for the services to be received), up to $14.5 million in connection with certain development milestones pertaining to the first indication in the U.S., up to $27.5 million in connection with certain drug development milestones pertaining to additional indications and development outside the U.S., up to $165 million upon the achievement of certain net sales milestones ranging from $75 million to $750 million in annual net sales, and royalty payments based on a percentage of net sales ranging from mid-single digits (on annual net sales at or below $50 million) to the low double digits (on annual net sales equal to or greater than $300 million), which are subject to potential diminution in certain circumstances.

The license provided under the AnnJi License Agreement is exclusive as to all oral forms of AJ201 for use in all indications (other than androgenetic alopecia and Alzheimer’s disease) in the United States, Canada, the European Union, the United Kingdom and Israel. The AnnJi License Agreement also contains customary representations and warranties and provisions related to confidentiality, diligence, indemnification and intellectual property protection. The Company will initially be obligated to obtain both clinical and commercial supply of AJ201 exclusively through AnnJi. AnnJi retains the manufacturing rights for AJ201 and the Company has the option to acquire those rights from AnnJi as described in the AnnJi License Agreement.

In connection with the signing of the AnnJi License Agreement, the Company issued 11,089 shares of its common stock to AnnJi (“First Tranche Shares”) at a fair value of $0.9 million on March 30, 2023. The Company issued 3,688 shares of common stock ("Second Tranche Shares"), recorded at a fair value of $0.3 million, on September 26, 2023 upon enrollment of the eighth patient in the ongoing Phase 1b/2a SBMA clinical trial. The fair value was calculated based on the closing price of the Company's stock as of February 28, 2023, the date the Company entered into the AnnJi License Agreement. In the event that the common stock of the Company ceases to be traded on a national securities exchange, AnnJi has the right to sell common stock of the Company back to the Company at a price of $2.10 per share subject to the terms in the AnnJi License Agreement.

In connection with execution of the AnnJi License Agreement, Avenue entered into a registration rights agreement with AnnJi, pursuant to which Avenue filed a registration statement to register the resale of the First Tranche Shares and Second Tranche Shares issued to AnnJi. The Company filed such registration statement on Form S-3 with the SEC on June 16, 2023, which was declared effective on June 27, 2023.

Note 4 — Related Party Agreements

Founders Agreement and Management Services Agreement with Fortress

In February 2015, Fortress entered into a Management Services Agreement (the "MSA") with the Company to provide services for the Company pursuant to the terms of the MSA. Expenses related to the MSA are recorded 50% in research and development expenses and 50% in general and administrative expenses in the Unaudited Condensed Consolidated Statements of Operations. For the three months ended September 30, 2024 and 2023, the Company recorded expense related to the MSA of $0.1 million and $0.1 million, respectively. For the nine months ended September 30, 2024 and 2023, the Company recorded expense related to the MSA of $0.4 million and $0.4 million, respectively.

In February 2015, Fortress entered into a Founders Agreement with the Company, under which the Company agreed to: (i) issue annually to Fortress, shares of common stock equal to two and one half percent (2.5%) of the fully-diluted outstanding equity of the Company at the time of issuance (the "Annual Equity Fee") and (ii) issue shares of the common stock equal to two and one half percent (2.5%) of the gross amount of any equity or debt financing (the "Financing Equity Fee").

Annual Equity Fee

For the three and nine months ended September 30, 2024, the Company did not have an Annual Equity Fee expense. There were 22,476 shares of the Company's common stock issued to Fortress in January 2024 related to the 2023 Annual Equity Fee.

For the three and nine months ended September 30, 2023, the Company did not have an Annual Equity Fee expense. There were 3,085 shares of the Company's common stock issued to Fortress in January 2023 related to the 2022 Annual Equity Fee.

Financing Equity Fee

For the three months ended September 30, 2024, the Company recorded a Financing Equity Fee of $14,000 and common stock issuable to Fortress of 4,023 shares. For the nine months ended September 30, 2024, the Company recorded a Financing Equity Fee of $0.2 million and issued 31,110 shares of the Company's common stock to Fortress.

For the three months ended September 30, 2023, the Company recorded a Financing Equity Fee of $0.1 million and issued 5,579 shares of the Company's common stock to Fortress. For the nine months ended September 30, 2023, the Company recorded a Financing Equity Fee of $0.2 million and issued 7,491 shares of the Company's common stock to Fortress.

Founders Agreement and Management Services Agreement with Baergic

Pursuant to the Share Contribution Agreement between Avenue and Fortress, the Founders Agreement and Management Services Agreement that had previously been existing between Fortress and Baergic were assigned to Avenue, such that they now exist between Avenue and Baergic; those agreements are referred to herein as the Avenue-Baergic Founders Agreement and the Avenue-Baergic MSA, as applicable. The Annual Stock Dividend payable to the Company is 2.5% of common stock calculated as a percentage of fully diluted outstanding capital and became effective as of November 8, 2022.

The Avenue-Baergic Founders Agreement has an effective date of March 9, 2017, and a term of 15 years, which upon expiration automatically renews for successive one-year periods unless terminated by Avenue and Baergic or a Change in Control (as defined in the Avenue-Baergic Founders Agreement) occurs.

As additional consideration under the Avenue-Baergic Founders Agreement, Baergic will also: (i) pay an equity fee in shares of common stock, payable within five (5) business days of the closing of any equity or debt financing for Baergic that occurs after the effective date of the Avenue-Baergic Founders Agreement and ends on the date when Avenue no longer has majority voting control in the Baergic’s voting equity, equal to two and one-half (2.5%) of the gross amount of any such equity or debt financing; and (ii) pay a cash fee equal to four and one-half percent (4.5%) of the Baergic’s annual net sales, payable on an annual basis, within ninety (90) days of the end of each calendar year. In the event of a Change in Control, Baergic will pay a one-time change in control fee equal to five (5x) times the product of (A) net sales for the twelve (12) months immediately preceding the change in control and (B) four and one-half percent (4.5%).

The Avenue-Baergic MSA has an effective date of March 9, 2017, pursuant to which Avenue renders management, advisory and consulting services to the Company. The Avenue-Baergic MSA has an initial term of five years and is automatically renewed for successive five-year terms unless terminated in accordance with its provisions. Services provided under the Avenue-Baergic MSA may include, without limitation, (i) advice and assistance concerning any and all aspects of the Baergic’s operations, clinical trials, financial planning and strategic transactions and financings and (ii) conducting relations on behalf of the Baergic with accountants, attorneys, financial advisors and other professionals (collectively, the “Avenue Services”). Baergic is obligated to utilize clinical research services, medical education, communication and marketing services and investor relations/public relation services of companies or individuals designated by Avenue, provided those services are offered at market prices. However, Baergic is not obligated to take or act upon any advice rendered from Avenue and Avenue shall not be liable for any of its actions or inactions based upon their advice. Pursuant to the Avenue-Baergic MSA and Baergic’s Certificate of Incorporation, Avenue and its affiliates, including all members of Baergic’s Board of Directors, will have no fiduciary or other duty to communicate or present any corporate opportunities to Baergic or to refrain from engaging in business that is similar to that of Baergic. In consideration for the Avenue Services, Baergic will pay Avenue an annual consulting fee of $0.5 million (the “Avenue-Baergic Annual Consulting Fee”), payable in advance in equal quarterly installments on the first business day of each calendar quarter in each year, provided, however, that such Avenue-Baergic Annual Consulting Fee shall be increased to $1.0 million for each calendar year in which Baergic has net assets in excess of $100 million at the beginning of the calendar year.

Table of Contents

Note 5 — Accounts Payable and Accrued Expenses

Accounts payable, accrued expenses, and other liabilities consisted of the following (in thousands):

	*As of September 30,*		*As of December 31,*
	*2024*		*2023*
Accounts payable	$	140	$	78
Accrued employee compensation		39		11
Accrued contracted services and other		248		198
Total accounts payable and accrued expenses	$	427	$	287

Note 6 - Commitments and Contingencies

Leases

The Company is not party to any leases for office space or equipment.

Litigation

The Company recognizes a liability for a contingency when it is probable that liability has been incurred and when the amount of loss can be reasonably estimated. When a range of probable loss can be estimated, the Company will accrue the most likely amount of such loss, and if such amount is not determinable, then the Company will accrue the minimum of the range of probable loss. As of September 30, 2024, there was no litigation against the Company.

Table of Contents

Note 7 - Stockholder's Equity

Class A Preferred Stock

On September 13, 2016, 2,000,000 shares of Preferred Stock were authorized, of which 250,000 have been designated as Class A Preferred Stock and the remainder are undesignated preferred stock. The Class A Preferred Stock, with a par value of $0.0001 per share, is identical to undesignated Common Stock other than as to voting rights, conversion rights, and the Annual Stock Dividend right (as described below). The undesignated Preferred Stock may be issued from time to time in one or more series. The Company’s Board of Directors is authorized to determine or alter the dividend rights, dividend rate, conversion rights, voting rights, rights and terms of redemption (including sinking fund provisions, if any), the redemption price or prices, the liquidation preferences and other designations, powers, preferences and relative, participating, optional or other special rights, if any, and the qualifications, limitations and restrictions granted to or imposed upon any wholly unissued series of Preferred Stock, and to fix the number of shares of any series of Preferred Stock (but not below the number of shares of any such series then outstanding).

On any matter presented to the stockholders of the Company for their action or consideration at any meeting of stockholders of the Company (or by written consent of stockholders in lieu of meeting), each holder of outstanding shares of Class A Preferred Stock shall be entitled to cast for each share of Class A Preferred Stock held by such holder as of the record date for determining stockholders entitled to vote on such matter, the number of votes that is equal to one and one-tenth (1.1) times a fraction, the numerator of which is the sum of (A) the number of shares of outstanding Common Stock and (B) the whole shares of Common Stock in to which the shares of outstanding Class A Preferred Stock are convertible, and the denominator of which is number of shares of outstanding Class A Preferred Stock (the “Class A Preferred Stock Ratio”). Thus, the Class A Preferred Stock will at all times constitute a voting majority.

Each share of Class A Preferred Stock is convertible, at the option of the holder, into one fully paid and nonassessable share of Common Stock (the “Conversion Ratio”), subject to certain adjustments. If the Company, at any time effects a subdivision or combination of the outstanding Common Stock (by any stock split, stock dividend, recapitalization, reverse stock split or otherwise), the applicable Conversion Ratio in effect immediately before that subdivision is proportionately decreased or increased, as applicable, so that the number of shares of Common Stock issuable on conversion of each share of Class A Preferred Stock shall be increased or decreased, as applicable, in proportion to such increase or decrease in the aggregate number of shares of Common Stock outstanding. Additionally, if any reorganization, recapitalization, reclassification, consolidation or merger involving the Company occurs in which the Common Stock (but not the Class A Preferred Stock) is converted into or exchanged for securities, cash or other property, then each share of Class A Preferred Stock becomes convertible into the kind and amount of securities, cash or other property which a holder of the number of shares of Common Stock of the Company issuable upon conversion of one share of the Class A Preferred Stock immediately prior to such reorganization, recapitalization, reclassification, consolidation or merger would have been entitled to receive pursuant to such transaction. Pursuant to the reverse stock splits by the Company in September 2022 and April 2024, the Class A Preferred Stock has a Conversion Ratio of 1,125 Class A Preferred to one share of Common Stock.

Common Stock

On January 9, 2024, the stockholders holding a majority of the outstanding voting power of the Company executed and delivered to the Board of Directors of the Company a written consent approving, among other items, an increase in the number of shares of common stock authorized under the Certificate of Incorporation, from 75,000,000 to 200,000,000. On February 20, 2024, the Company filed the Certificate of Amendment with the Secretary of State for the State of Delaware effectuating the Authorized Shares Increase.

Holders of the Company's common stock are entitled to one vote for each share held on all matters submitted to a vote of stockholders and do not have cumulative voting rights. An election of directors by the stockholders is determined by a plurality of the votes cast by the stockholders entitled to vote on the election. Holders of common stock are entitled to receive proportionately any dividends as may be declared by the Company's Board of Directors, subject to any preferential dividend rights of outstanding preferred stock.

In the event of the Company's liquidation or dissolution, the holders of common stock are entitled to receive proportionately all assets available for distribution to stockholders after the payment of all debts and other liabilities and subject to the prior rights of any outstanding preferred stock. Holders of common stock have no preemptive, subscription, redemption or conversion rights. The rights, preferences and privileges of holders of common stock are subject to, and may be adversely affected by, the rights of the holders of shares of any series of preferred stock that the Company may designate and issue in the future.

Reverse Stock Split

On April 25, 2024, the Company filed an amendment (the “Reverse Split Amendment”) to its Third Amended and Restated Certificate of Incorporation with the Secretary of State of the State of Delaware to effect the 1-for-75 reverse stock split of the Company's shares of common stock ("Reverse Stock Split"). As a result of the Reverse Stock Split, every 75 shares of common stock outstanding immediately prior to effectiveness of the Reverse Stock Split were combined and converted into one share of common stock without any change in the par value per share. The Reverse Stock Split became effective on April 26, 2024, and the common stock was quoted on the Nasdaq Stock Market on a post-split basis at the open of business on April 26, 2024. No fractional shares were issued in connection with the Reverse Stock Split. Stockholders who would have otherwise been entitled to a fraction of one share of common stock as a result of the Reverse Stock Split instead received one whole share of common stock. The Company issued 86,518 shares of common stock to shareholders who had been entitled to a fraction of one share.

All share and per share information has been retroactively adjusted to give effect to the Reverse Stock Split for all periods presented, unless otherwise indicated.

Capital Raises

2021 Shelf

On December 7, 2021, the Company filed a shelf registration statement (File No. 333-261520) on Form S-3, which was declared effective on December 10, 2021 (the "Shelf"). Approximately $24.1 million of securities remain available for sale under the 2021 Shelf as of September 30, 2024.

January 2024 Warrant Inducement and Private Placement

On January 5, 2024, the Company entered into (i) an inducement offer letter agreement (the “January 2023 Investor Inducement Letter”) with a certain investor (the “January 2023 Investor”) in connection with certain outstanding warrants to purchase up to an aggregate of 25,871 of the Company’s common stock originally issued to the January 2023 Investor on January 31, 2023 (the “January 2023 Warrants”) and (ii) an inducement offer letter agreement (the “November 2023 Investor Inducement Letter Agreement” and, together with the January 2023 Investor Inducement Letter, the “January 2024 Warrant Inducement”) with certain investors (the “November 2023 Investors” and, together with the January 2023 Investor, the “January 2024 Holders”) in connection with certain outstanding warrants to purchase up to an aggregate of 194,667 shares of common stock, originally issued to the November 2023 Investors on November 2, 2023 (the “November 2023 Warrants” and, together with the January 2023 Warrants, the “Existing Warrants”). The January 2023 Warrants had an exercise price of $116.25 per share, and the November 2023 Warrants had an exercise price of $22.545 per share.

Pursuant to the January 2024 Warrant Inducement, (i) the January 2023 Investor agreed to exercise for cash its January 2023 Warrants at a reduced exercise price of $22.545 per share and (ii) the November 2023 Investors agreed to exercise for cash their November 2023 Warrants at the existing exercise price of $22.545 in consideration for the Company’s agreement to issue in a private placement (x) new Series A common stock purchase warrants (the “New Series A Warrants”) to purchase up to 220,538 shares of common stock (the “New Series A Warrants Shares”) and (y) new Series B common stock purchase warrants (the “New Series B Warrants” and, together with the New Series A Warrants, the “January 2024 Warrants”) to purchase up to 220,538 shares of common stock (the “New Series B Warrants Shares”). The New Series A Warrants will expire five years following the issuance date and the New Series B Warrants will expire eighteen months following the issuance date.

The January 2023 Warrants, which were liability classified, were revalued on January 5, 2024 using the Black-Scholes Model to calculate the difference in fair value as a result of the change in exercise price. The difference in fair value of $0.1 million was recorded as a change in fair value of warrant liabilities in the Condensed Consolidated Statements of Operations (see Note 8). The issuance of the January 2024 Warrants was considered as part of the cost of the inducement and the January 2024 Warrants were valued using the Black-Scholes Model with the fair value being allocated between the January 2023 Warrants and November 2023 Warrants on a weighted basis. The approximately $0.6 million of the January 2024 Warrants fair value was allocated to the January 2023 warrants and recorded as a loss on common stock warrant liabilities in the Condensed Consolidated Statements of Operations with a corresponding offset to additional paid-in-capital. Approximately $4.3 million of the January 2024 Warrant fair value was allocated to the November 2023 Warrants and deemed to be a dividend and recorded to additional paid-in-capital because the Company had an accumulated deficit on the exercise date. The deemed dividend was included in net loss attributable to common stockholders in the calculation of net loss per share in the condensed consolidated statements of operations (see Note 2).

The Company received aggregate net proceeds of approximately $4.5 million from the exercise of the Existing Warrants by the January 2024 Holders, after deducting placement agent fees and other expenses payable by the Company.

The Company filed a registration statement on Form S-3 (File No. 333-276671) with the SEC providing for the resale of the January 2024 Warrant Shares (the “Resale Registration Statement”) on January 24, 2024, which was declared effective on February 1, 2024.

The key inputs for the Black-Scholes Model calculations on January 5, 2024 were as follows:

	January 2023			New Series A			New Series B
	Warrants			Warrants			Warrants
Stock price	$	14.25		$	14.25		$	14.25
Risk-free interest rate		4.40	%		4.02	%		4.40	%
Expected dividend yield		—			—			—
Expected term in years		2.1			5.0			1.5
Expected volatility		185	%		138	%		187	%

May 2024 Warrant Inducement and Private Placement

On April 28, 2024, the Company entered into inducement offer letter agreements (the “May 2024 Warrant Inducement”) with (i) certain investors (the “October 2022 Investors”) that held certain outstanding October 2022 Warrants to purchase up to an aggregate of 27,271 shares of the Company’s common stock; (ii) certain investors (the “May Inducement November 2023 Investors”) that hold November 2023 Warrants to purchase up to an aggregate of 221,333 shares of common stock; and (iii) certain investors (the “January 2024 Investors” and, collectively with the October 2022 Investors and May Inducement November 2023 Investors, the “May 2024 Holders”) that hold January 2024 Warrants to purchase up to an aggregate of 441,076 shares of common stock. We refer to the exercised January 2024 Warrants collectively with the October 2022 Warrants and November 2023 Warrants as the "May 2024 Exercised Warrants"). The October 2022 Warrants had an exercise price of $116.25 per share, the November 2023 Warrants had an exercise price of $22.545 per share, and the January 2024 Warrants had an exercise price of $22.545 per share. Pursuant to the May 2024 Warrant Inducement, the May 2024 Holders agreed to exercise for cash the May 2024 Exercised Warrants at a reduced exercise price of $6.20 per share in partial consideration for the Company’s agreement to issue in a private placement (x) new Series C Common Stock purchase warrants (the “New Series C Warrants”) to purchase up to 689,680 shares of common stock (the “New Series C Warrant Shares”) and (y) new Series D Common Stock Purchase Warrants (the “New Series D Warrants” and, together with the New Series C Warrants, the “May 2024 Warrants”) to purchase up to 689,680 shares of common stock (the “New Series D Warrant Shares” and, together with the New Series C Warrant Shares, the “May 2024 Warrant Shares”). The May 2024 Holders also agreed to pay the Company $0.125 per May 2024 Warrant Share (the “Additional Warrant Consideration”). The closing of the transactions contemplated pursuant to the May 2024 Warrant Inducement occurred on May 1, 2024.

The October 2022 Warrants, which were liability classified, were revalued on May 1, 2024 using the Black-Scholes Model to calculate the difference in fair value as a result of the change in exercise price. The difference in fair value of $0.1 million was recorded as a change in fair value of warrant liabilities in the Condensed Consolidated Statements of Operations (see Note 8). The issuance of the May 2024 Warrants was considered as part of the cost of the inducement and the May 2024 Warrants were valued using the Black-Scholes Model with the fair value being allocated between the October 2022 Warrants, November 2023 Warrants and January 2024 Warrants on a weighted basis. The approximately $0.2 million of the May 2024 Warrants fair value was allocated to the October 2022 warrants and recorded as a loss on common stock warrant liabilities in the Condensed Consolidated Statements of Operations with a corresponding offset to additional paid-in-capital. Approximately $4.5 million of the May 2024 Warrant fair value was allocated to the November 2023 Warrants and January 2024 Warrants and deemed to be a dividend and recorded to additional paid-in-capital because the Company had an accumulated deficit on the exercise date. The deemed dividend was included in net loss attributable to common stockholders in the calculation of net loss per share in the condensed consolidated statements of operations (see Note 2).

The Company received net proceeds of approximately $3.7 million from the exercise of the May 2024 Exercised Warrants by the May 2024 Holders and the payment of the Additional Warrant Consideration, after deducting placement agent fees and other expenses payable by the Company.

The Company filed a registration statement on Form S-3 (File No. 333-279125) with the SEC providing for the resale of the May 2024 New Warrant Shares (the “May 2024 Resale Registration Statement”) on May 6, 2024, which was declared effective on May 10, 2024.

The key inputs for the Black-Scholes Model calculations on May 1, 2024 were as follows:

	*October 2022*			*Series C*			*Series D*			*Placement Agent*
	*Warrants*			*Warrants*			*Warrants*			*Warrants*
Stock price	$	4.76		$	4.76		$	4.76		$	4.76
Risk-free interest rate		5	%		4.64	%		4.96	%		4.64	%
Expected dividend yield		—			—			—			—
Expected term in years		3.4			5.0			1.5			5.0
Expected volatility		160	%		141	%		132	%		141	%

ATM Facility

On May 10, 2024, the Company entered into an At the Market Offering Agreement (the “ATM Agreement”) with H.C. Wainwright & Co. LLC (the “ATM Manager”) under which the Company may offer and sell, from time to time at its sole discretion, shares of its common stock, par value $0.0001 per share, through or to the ATM Manager. The offer and sale of the shares will be made pursuant to a previously filed shelf registration statement on Form S-3 (File No. 333-261520), originally filed with the SEC on December 7, 2021 and declared effective by the SEC on December 10, 2021, and the related prospectus supplement dated May 10, 2024 (including such replacement registration statement as may be filed with the SEC, the “ATM Registration Statement”) and filed with the SEC on such date pursuant to Rule 424(b) under the Securities Act of 1933, as amended (the “Securities Act”). As a result of the limitations of General Instruction I.B.6 of Form S-3, the Company may currently sell up to a maximum of $3,850,000 of its shares pursuant to the ATM Agreement.

Under the ATM Agreement, the ATM Manager may sell shares by any method permitted by law deemed to be an “at the market offering” as defined in Rule 415(a)(4) under the Securities Act. The ATM Manager will use commercially reasonable efforts to sell the shares from time to time, based upon instructions from the Company (including any price, time or size limits or other customary parameters or conditions the Company may impose). The Company agreed to pay the ATM Manager a commission of 3.0% of the gross proceeds from the sales of shares sold through the ATM Manager under the ATM Agreement and has provided the ATM Manager with customary indemnification and contribution rights. The Company also agreed to reimburse the ATM Manager for certain expenses incurred in connection with the ATM Agreement. The Company and the ATM Manager may each terminate the ATM Agreement at any time upon specified prior written notice.

For the three months and nine months ended September 30, 2024, the Company sold an aggregate of 160,934 shares and 245,617 shares of its common stock pursuant to the ATM Agreement, resulting in net proceeds of approximately $0.6 million and $0.9 million, respectively, after deducting underwriting discounts

Equity Incentive Plan

The Company has in effect the Avenue Therapeutics, Inc. 2015 Incentive Plan (as amended, the “2015 Incentive Plan"). The 2015 Incentive Plan was adopted in January 2015 by the Company's stockholders and, in December 2021, the Company’s stockholders approved an amendment to the plan to increase the number of authorized shares issuable to 3,556 shares. On January 30, 2023, the Company’s stockholders approved an amendment to the 2015 Incentive Plan to increase the number of authorized shares issuable to 70,223 shares. On June 24, 2024, the Company’s stockholders approved an amendment to the 2015 Incentive Plan to increase the number of authorized shares issuable to 5,070,223 shares, which extended the term of the 2015 Incentive Plan to June 24, 2034, to increase the limit of shares that may be issued upon exercise of incentive stock options by 5,000,000 shares, and to increase the annual share limit awards for non-employee directors to 500,000. Under the 2015 Incentive Plan, the compensation committee of the Company’s board of directors is authorized to grant stock-based awards to directors, officers, employees and consultants. The 2015 Incentive Plan authorizes grants to issue up to 5,070,223 shares of authorized but unissued common stock and expires 10 years from adoption and limits the term of each option to no more than 10 years from the date of grant.

Total shares available for the issuance of stock-based awards under the Company’s 2015 Incentive Plan was 4,575,701 shares at September 30, 2024.

Restricted Stock Units and Restricted Stock Awards

The following table summarizes the restricted stock unit and award activity during the nine months ended September 30, 2024:

	*Number of*			*Weighted*
	*Units and*			*Average Grant*
	*Awards*			*Date Fair Value*
Unvested balance at December 31, 2023		1,311		$	196.21
Granted		—			—
Forfeited		—			—
Vested		(283	)		85.50
Unvested balance at March 31, 2024		1,028		$	226.69
Unvested balance at June 30, 2024		1,028		$	226.69
Granted		235,000			2.46
Forfeited		—			—
Vested		—			—
Unvested balance at September 30, 2024		236,028		$	3.44

At September 30, 2024, the Company had unrecognized stock-based compensation expense related to restricted stock units and restricted stock awards of $0.5 million, which is expected to be recognized over the remaining weighted-average vesting period of 1.1 years. This amount does not include, as of September 30, 2024, 45 shares of restricted stock outstanding which are performance-based and vest upon achievement of certain corporate milestones. The expense is recognized over the vesting period of the award. Stock-based compensation for awards containing performance conditions will be measured as of the grant date and recorded if and when it is probable that the performance condition will be achieved.

The Company offers certain executives and key employees the opportunity to defer settlement of vested restricted stock units as part of our nonqualified deferred compensation plan. As of September 30, 2024, the Company had 235,000 outstanding deferred restricted stock units.

Stock Options

The following table summarizes stock option activity during the nine months ended September 30, 2024:

					*Weighted*
					*Average*
			*Weighted*		*Remaining*		*Aggregate*
	*Number*		*Average*		*Contractual*		*Intrinsic Value*
	*of Options*		*Exercise Price*		*Term (years)*		*(in thousands)*
Outstanding at December 31, 2023		22,474	$	85.50		9.5	$	—
Granted		234,000	$	2.46			$	—
Exercised		—	$	—			$	—
Cancelled/forfeited		—	$	—			$	—
Expired		—	$	—			$	—
Outstanding at Balance at September 30, 2024		256,474	$	9.74		9.9	$	—
Expected to vest		246,802	$	6.77		9.9	$	—
Exercisable		9,672	$	85.50		8.7	$	—

There were 234,000 options granted in the nine months ended September 30, 2024. The weighted-average grant date fair value of options granted during the nine months ended September 30, 2024 and 2023 was $2.15 and $85.50, respectively. The aggregate intrinsic value of options is calculated as the difference between the exercise price of the underlying options and the fair value of the Company's common stock for those options that had exercise prices lower than the fair value of the Company's common stock. As of September 30, 2024, the total compensation cost related to non-vested options awards not yet recognized is approximately $0.9 million with a weighted average remaining vesting period of 1.3 years.

The Company estimated the fair value of stock options granted in the periods presented utilizing a Black-Scholes option-pricing model utilizing the following assumptions:

	*For the Nine Months Ended*
	*September 30,*
	*2024*	*2023*
Volatility	135%	124.9 - 125.7%
Expected term (in years)	5.64	5.8 - 5.9
Risk-free rate	3.6%	4.1%
Expected dividend yield	—%	—%

Stock-based compensation expense has been reported in the Company's condensed consolidated statements of operations as follows:

	*For the Three Months Ended*				*For the Nine Months Ended*
	*September 30,*				*September 30,*
	*2024*		*2023*		*2024*		*2023*
Research and development	$	89	$	144	$	179	$	150
General and administrative		242		417		535		449
Total stock-based compensation expense	$	331	$	561	$	714	$	599

Stock Warrants

The following table summarizes the warrant activity for the nine months ended September 30, 2024 and 2023:

				*Weighted*
				*Average*		*Aggregate*
				*Exercise*		*Intrinsic Value*
	*Warrants*			*Price*		*(in thousands)*
Outstanding, December 31, 2023		524,601		$	32.42	$	—
Granted		441,076			6.20
Exercised		(220,538	)		22.55
Outstanding, March 31, 2024		745,139		$	29.50	$	—
Granted		1,420,741			6.25
Exercised		(689,680	)		6.20
Outstanding, June 30, 2024		1,476,200		$	8.64	$	—
Outstanding, September 30, 2024		1,476,200		$	8.64	$	—

Upon the exercise of warrants, the Company will issue new shares of its common stock.

InvaGen Share Repurchase

Under the Share Repurchase Agreement, the Company agreed to pay InvaGen an additional amount as a contingent fee, payable in the form of seven and a half percent (7.5%) of the proceeds of future financings, up to $4.0 million. In connection with the closing of the January 2024 Warrant Inducement, the May 2024 Warrant Inducement, and common share sales pursuant to the ATM Agreement, the Company made payments totaling approximately $0.7 million to InvaGen during the nine months ended September 30, 2024. Payments to InvaGen are recorded in general and administrative expense on the condensed consolidated statements of operations.

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Note 8 - Common Stock Warrant Liabilities

The Company accounts for warrants as either equity-classified or liability-classified instruments based on an assessment of the warrant’s specific terms and applicable authoritative guidance in ASC 480 and ASC 815. The assessment considers whether the warrants are freestanding financial instruments pursuant to ASC 480, meet the definition of a liability pursuant to ASC 480, and whether the warrants meet all of the requirements for equity classification under ASC 815, including whether the warrants are indexed to the Company’s own common stock, among other conditions for equity classification. This assessment, which requires the use of professional judgment, is conducted at the time of warrant issuance and as of each subsequent quarterly period end date while the warrants are outstanding.

For issued or modified warrants that meet all of the criteria for equity classification, the warrants are required to be recorded as a component of additional paid-in capital at the time of issuance. For issued or modified warrants that do not meet all the criteria for equity classification, the warrants are required to be recorded at their initial fair value on the date of issuance, and each consolidated balance sheet date thereafter. Changes in the estimated fair value of the warrants are recognized as a gain or loss on the condensed consolidated statements of operations.

Warrant Liability

The Company has previously issued freestanding warrants to purchase shares of its common stock in connection with financing activities. The outstanding October 2022 Warrants are classified as liabilities on the balance sheet as they contain terms for redemption of the underlying security that are outside the Company's control. The January 2023 Warrants classified as liabilities were fully exercised during the three months ended March 31, 2024. The Black-Scholes Model is used to value the warrants classified as liabilities and the approach required management to estimate inputs including expected volatility and expected term and is most significantly impacted by the volatility of the Company's common stock price. These inputs are inherently subjective and require significant analysis and judgment to develop.

The fair value of the warrants was measured at the time of issuance and is re-measured at each financial reporting date with any changes in fair value being recognized in change in fair value of warrant liabilities, a component of other income (expense), in the consolidated statements of operations and comprehensive income (loss). The Company will continue to re-measure the fair value of the October 2022 Warrant liabilities until exercise or expiration of the warrants on October 10, 2027.

In January 2024, the Company entered into an inducement letter with an investor from a registered direct offering in January 2023 which provided for the immediate exercise of certain of its existing outstanding warrants to exercise for cash an aggregate of 25,871 shares of the Company’s common stock at a reduced exercise price of $22.545 per share. Included in the exercise were the entirety of the January 2023 Warrants. The Company revalued the January 2023 Warrants on January 5, 2024, resulting in a fair value of $0.3 million. The $0.1 million increase in the fair value of the common stock warrant liability resulted in an offsetting change in fair value of warrant liabilities in the unaudited condensed consolidated statements of operations (see Note 7).

In May 2024, the Company closed on the May 2024 Warrant Inducement with the May 2024 Holders which provided for the immediate exercise of certain of its existing outstanding warrants to exercise for cash an aggregate of 689,680 shares of the Company's common stock with an exercise price of $6.20. Included in the exercise were certain October 2022 Warrants. The Company revalued the October 2022 Warrants on May 1, 2024, resulting in a fair value of $0.1 million. The $0.1 million decrease in fair value of the common stock warrant liability resulted in an offsetting change in fair value of warrant liabilities in the unaudited condensed consolidated statement of operations (see Note 7).

Fair Value of Warrant Liabilities

Warrant liabilities are categorized within Level 3 of the fair value hierarchy and are measured at fair value on a recurring basis as follows (in thousands):

	*October 2022*			*January 2023*
	*Warrants*			*Warrants*			*Total*
Fair value of warrants outstanding as of December 31, 2023	$	426		$	160		$	586
Change in fair value of warrants		(13	)		129			116
Exercise of warrants		—			(289	)		(289	)
Fair value of warrants outstanding as of March 31, 2024	$	413		$	—		$	413
Change in fair value of warrants		(255	)		—			(255	)
Exercise of warrants		(111	)		—			(111	)
Fair value of warrants outstanding as of June 30, 2024	$	47		$	—		$	47
Change in fair value of warrants		(18	)		—			(18	)
Exercise of warrants		—			—			—
Fair value of warrants outstanding as of September 30, 2024	$	29		$	—		$	29

The key inputs for the October 2022 Warrants using the Black-Scholes model were as follows:

	*September 30,*			*December 31,*
	*2024*			*2023*
Stock price	$	2.49		$	12.00
Risk-free interest rate		3.58	%		3.84	%
Expected dividend yield		—			—
Expected term in years		3.0			3.8
Expected volatility		164	%		148	%

Note 9 - Subsequent Events

On November 13, 2024, the Company entered into a Subscription and Forgiveness Agreement with Fortress, whereby Fortress agreed to convert 50% of a total of $0.5 million owed by the Company under the MSA into newly issued common stock of the Company and forgive the remaining 50% of the accrued balance. Therefore, the Company issued a total of 122,850 shares based on the closing price of $2.035 on the day prior to the execution of the agreement and reduced its liabilities associated with accounts payable and accrued expenses by $0.5 million.

Subsequent to the period ended September 30, 2024, the Company sold an aggregate of 274,063 shares of its common stock pursuant to the ATM Agreement, resulting in net proceeds of approximately $0.6 million after deducting underwriting discounts. As a result of the foregoing transactions and as of the date of this filing, the Company believes it has stockholders’ equity of at least $2.5 million and therefore continues to satisfy the minimum Nasdaq listing requirement set forth in Nasdaq Listing Rule 5550(b)(1).

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Item 2. Financial Information.

Management’s Discussion and Analysis of the Results of Operations

Forward-Looking Statements

Certain matters discussed in this report may constitute forward-looking statements for purposes of the Securities Act of 1933, as amended (the “Securities Act”), and the Securities Exchange Act of 1934, as amended (the “Exchange Act”). All statements other than statements of current or historical fact contained in this report, including statements that express our intentions, plans, objectives, beliefs, expectations, strategies, predictions or any other statements relating to our future activities or other future events or conditions are forward-looking statements. The words “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “predict,” “should,” “project,” “will,” “would,” and similar expressions are generally intended to identify forward-looking statements. These statements are based on current expectations, estimates and projections made by management about our business, our industry and other conditions affecting our financial condition, results of operations or business prospects. These statements are not guarantees of future performance and involve risks, uncertainties and assumptions that are difficult to predict. Therefore, actual outcomes and results may differ materially from what is expressed or forecasted in, or implied by, the forward-looking statements due to numerous risks and uncertainties. Factors that could cause such outcomes and results to differ include, but are not limited to, risks and uncertainties arising from:

●

the fact that we currently have no drug products for sale and that our success is dependent on our product candidates receiving regulatory approval and being successfully commercialized;

●

the possibility that serious adverse or unacceptable side effects are identified during the development of our current or future product candidates, such that we would need to abandon or limit development of some of our product candidates;

●

our ability to successfully develop, partner, or commercialize any of our current or future product candidates including AJ201, IV tramadol, and BAER-101;

●

the substantial doubt raised about our ability to continue as a going concern, which may hinder our ability to obtain future financing;

●

the significant losses we have incurred since inception and our expectation that we will continue to incur losses for the foreseeable future;

●

our need for substantial additional funding, which may not be available to us on acceptable terms, or at all, which unavailability could force us to delay, reduce or eliminate our product development programs or commercialization efforts;

●

our reliance on third parties for several aspects of our operations;

●

our reliance on clinical data and results obtained by third parties that could ultimately prove to be inaccurate, unreliable, or unacceptable to regulatory authorities;

●

the possibility that we may not receive regulatory approval for any or all of our product candidates, or that such approval may be significantly delayed due to scientific or regulatory reasons;

●

the fact that even if one or more of our product candidates receives regulatory approval, they will remain subject to substantial regulatory scrutiny;

●

the effects of current and future laws and regulations relating to fraud and abuse, false claims, transparency, health information privacy and security, and other healthcare laws and regulations;

●

the effects of competition for our product candidates and the potential for new products to emerge that provide different or better therapeutic alternatives for our targeted indications;

●

the possibility that the government or third-party payors fail to provide adequate coverage and payment rates for our product candidates or any future products;

●

our ability to establish sales and marketing capabilities or to enter into agreements with third parties to market and sell our product candidates;

●

our exposure to potential product liability claims;

●

related to the protection of our intellectual property and our potential inability to maintain sufficient patent protection for our technology and products;

●

our ability to maintain compliance with the obligations under our intellectual property licenses and funding arrangements with third parties, without which licenses and arrangements we could lose rights that are important to our business;

●

the fact that Fortress Biotech, Inc. ("Fortress") controls a majority of the voting power of our outstanding capital stock and has rights to receive significant share grants annually; and

●

and the risks described under the section titled “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2023 (the “2023 Form 10-K”).

The forward-looking statements contained in this report reflect our views and assumptions as of the effective date of this report. New risks and uncertainties arise from time to time, and it is impossible for us to predict these events or how they may affect us. Except as required by law, we assume no responsibility for updating any forward-looking statements to reflect events or circumstances that may arise after the date of this report, except as required by applicable law.

We qualify all of our forward-looking statements by these cautionary statements. In addition, with respect to all of our forward-looking statements, we claim the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995.

Overview

Avenue Therapeutics, Inc. (“Avenue” or the “Company”) is a specialty pharmaceutical company focused on the development and commercialization of therapies for the treatment of neurologic diseases. Our product candidates include AJ201 for the treatment of spinal and bulbar muscular atrophy ("SBMA", also known as Kennedy's Disease), an intravenous formulation of tramadol ("IV tramadol"), a schedule IV opioid for the treatment of post-operative acute pain, and BAER-101 for the treatment of epilepsy and panic disorders. We may in the future acquire additional product candidates.

Our net loss for the nine months ended September 30, 2024 and 2023 was approximately $10.1 million and $11.1 million, respectively. As of September 30, 2024, we had an accumulated deficit of approximately $101.0 million. Substantially all our net losses resulted from costs incurred for research and development, and general and administrative purposes.

We expect to continue to incur research and development costs and general and administrative costs and incur operating losses for at least the next several years as we continue the development of our product candidates.

We intend to obtain additional capital through the sale of debt or equity securities or other arrangements to fund our operations, research and development activity or regulatory approval activity; however, there can be no assurance that we will be able to raise the necessary capital under acceptable terms, if at all. The sale of additional equity or securities convertible into or exercisable for equity may dilute existing stockholders and newly issued shares may contain senior rights and preferences compared to currently outstanding shares of our common stock. Issued debt securities may contain covenants and limit our ability to pay dividends or make other distributions to stockholders. We may also seek financing through strategic partnerships for some or all of our portfolio assets. If we are unable to obtain such additional financing, future operations would need to be scaled back or discontinued.

We are a majority-controlled subsidiary of Fortress. For related party transactions, see Note 4 to our financial statements included in this Quarterly Report on Form 10-Q.

Avenue Therapeutics, Inc. was incorporated in Delaware on February 9, 2015. Our executive offices are located at 1111 Kane Concourse, Suite 301, Bay Harbor Islands, FL 33154. Our telephone number is (781) 652-4500, and our email address is info@avenuetx.com.

AJ201

In February 2023, we announced that we entered into a license agreement (the “AnnJi License Agreement”) with AnnJi Pharmaceutical Co., Ltd. (“AnnJi”) whereby the Company obtained an exclusive license from AnnJi to intellectual property rights pertaining to the molecule known as JM17, which activates Nrf1 and Nrf2, enhances androgen receptor degradation and underlies AJ201, a clinical product candidate currently in a Phase 1b/2a clinical trial in the United States (“U.S.”) for the treatment of SBMA.

Under the AnnJi License Agreement, in exchange for exclusive rights to the intellectual property underlying the AJ201 product candidate, the Company paid an initial cash license fee of $3.0 million. The Company issued shares of its common stock and is obligated to make additional payments over the course of the AnnJi License Agreement including reimbursement payments of up to $10.8 million in connection with the product’s Phase 1b/2a clinical trial.

The license provided under the AnnJi License Agreement is exclusive as to all oral forms of AJ201 for use in all indications (other than androgenetic alopecia and Alzheimer’s disease) in the United States, Canada, the European Union, the United Kingdom and Israel. The AnnJi License Agreement also contains customary representations and warranties and provisions related to confidentiality, diligence, indemnification and intellectual property protection. The Company is initially obligated to obtain both clinical and commercial supply of AJ201 exclusively through AnnJi.

The 12-week, multicenter, randomized, double-blind trial enrolled 25 patients, randomly assigned to AJ201 (600mg/day) or placebo. The primary endpoint of the study is to assess safety and tolerability of AJ201 in subjects with clinically and genetically defined SBMA. Secondary endpoints include pharmacodynamic data measuring change from baseline in mutant androgen receptor protein levels in skeletal muscle and changes in the fat and muscle composition as seen on MRI scans. Further details on the study can be found using the ClinicalTrials.gov identifier NCT05517603. Information on clinicaltrials.gov does not constitute part of this Quarterly Report on Form 10-Q.

In May 2024, we announced last patient last visit in the Phase 1b/2a trial and anticipate top-line data readout around year-end 2024.

IV Tramadol

We participated in a Type C meeting with the FDA in March 2023 to discuss a proposed study protocol to assess the risk of respiratory depression related to opioid stacking on IV tramadol relative to an approved opioid analgesic. We announced in April 2023 that we received official meeting minutes from the Type C meeting with the FDA. The Type C meeting minutes indicate that we are in agreement with the FDA on a majority of the proposed protocol items and are in active discussion about remaining open items. The minutes indicate that the FDA also agrees that a successful study will support the submission of a complete response to the second Complete Response Letter for IV tramadol pending final agreement on a statistical analysis plan and a full review of the submitted data in the complete response as well as concurrence from the DAAAP.

In January 2024, we announced that we reached final agreement with the FDA on the Phase 3 safety study protocol and statistical analysis approach, including the primary endpoint. The final non-inferiority study is designed to assess the risk of opioid-induced respiratory depression related to opioid stacking on IV tramadol compared to IV morphine. The study will randomize approximately 300 post bunionectomy patients to IV tramadol or IV morphine for pain relief administered during a 48-hour post-operative period. Of note, this study design was used in the first of two Phase 3 trials. In a Phase 3 safety study to be conducted, patients will have access to IV hydromorphone, a Schedule II opioid, for rescue of breakthrough pain. The primary endpoint is a composite of elements indicative of respiratory depression.

We plan to initiate the study as soon as possible, subject to having the necessary financing.

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BAER-101 (novel α2/3–subtype-selective GABA A PAM)

Baergic is a clinical-stage pharmaceutical company founded in December 2019 that focuses on the development of pharmaceutical products for the treatment of neurologic disorders. Baergic was acquired by the Company pursuant to a stock contribution agreement (the “Contribution Agreement”) with Fortress, in order to strategically align with Avenue’s goals of building a rare and neurologic pipeline. Baergic’s pipeline currently consists of a single compound, BAER-101, a novel α2/3–subtype-selective GABA A positive allosteric modulator. BAER-101 (formerly known as AZD7325) was originally developed by AstraZeneca and has an established safety profile in early clinical trials including over 700 patients.

In August 2023, we reported preclinical data for BAER-101 from an in vivo evaluation in SynapCell’s Genetic Absence Epilepsy Rate from the Strasbourg (“GAERS”) model of absence epilepsy. The GAERS model mimics behavioral, electrophysiological and pharmacological features of human absence seizures and has shown to be an early informative indicator of efficacy in anti-seizure drug development. In the model, BAER-101 demonstrated full suppression of seizure activity with a minimal effective dose of 0.3 mg/kg administered orally. The data were subsequently presented at the American Epilepsy Society (“AES”) 2023 Annual Meeting in December 2023 and at the American Society for Experimental Neurotherapeutics (“ASENT”) 2024 Annual Meeting in March 2024. The data were also published in Drug Development Research in February 2024.

Critical Accounting Policies and Use of Estimates

Our discussion and analysis of our financial condition and results of operations are based on our consolidated financial statements, which have been prepared in accordance with U.S. GAAP. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities in our consolidated financial statements. On an ongoing basis, we evaluate our estimates and judgments, including those related to accrued expenses and stock-based compensation. We base our estimates on historical experience, known trends and events and various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

For a discussion of our critical accounting estimates, see the Management’s Discussion and Analysis of the Results of Operations in the Company’s Annual Report on Form 10-K, which was filed with the United States Securities and Exchange Commission (“SEC”) on March 18, 2024 (the “2023 Form 10-K”). There were no material changes in our critical accounting estimates or accounting policies from December 31, 2023.

Accounting Pronouncements

See Note 2, “Significant Accounting Policies”, to our unaudited condensed consolidated financial statements contained in Part I, Item 1 of this Quarterly Report on Form 10-Q for a discussion of recent accounting pronouncements.

Smaller Reporting Company Status

We are a “smaller reporting company,” meaning that either (i) the market value of our shares held by non-affiliates is less than $250 million or (ii) the market value of our shares held by non-affiliates is less than $700 million and our annual revenue was less than $100 million during the most recently completed fiscal year. We may continue to be a smaller reporting company if either (i) the market value of our shares held by non-affiliates is less than $250 million or (ii) our annual revenue was less than $100 million during the most recently completed fiscal year and the market value of our shares held by non-affiliates is less than $700 million. As a smaller reporting company, we chose to present only the two most recent fiscal years of audited financial statements in the 2023 Form 10-K, have reduced disclosure obligations regarding executive compensation and certain other matters, and smaller reporting companies are permitted to delay adoption of certain recent accounting.

Basis of Presentation and Principles of Consolidation

The Company’s consolidated financial statements have been prepared in conformity with U.S. GAAP, include all adjustments necessary for the fair presentation of the Company’s financial position for the periods presented and are stated in U.S. dollars. The Company’s consolidated financial statements include the accounts of the Company and the accounts of the Company’s subsidiary, Baergic. All intercompany balances and transactions have been eliminated. Because the Company owns less than 100% of Baergic, the Company records net loss attributable to non-controlling interests in its consolidated statements of operations equal to the percentage of the economic or ownership interest retained in Baergic by the respective non-controlling parties. The Company continually assesses whether changes to existing relationships or future transactions may result in the consolidation or deconsolidation of its' subsidiary.

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Results of Operations

General

At September 30, 2024, we had an accumulated deficit of $101.0 million. While we may in the future generate revenue from a variety of sources, including license fees, milestone payments, research and development payments in connection with strategic partnerships and/or product sales, our product candidate are still in development and may never be successfully developed or commercialized. Accordingly, we expect to continue to incur substantial losses from operations for the foreseeable future, and there can be no assurance that we will ever generate significant revenues.

Comparison of the Three Months Ended September 30, 2024 and 2023

	For The Three Months Ended
	September 30,						Change
($ in thousands)	2024			2023			$			%
Operating expenses:
Research and development	$	2,327		$	907		$	1,420			157	%
General and administrative		829			1,161			(332	)		(29	)%
Loss from operations		(3,156	)		(2,068	)		(1,088	)		53	%

Other income (expense):
Interest income		51			9			42			467	%
Change in fair value of warrant liabilities		18			2,572			(2,554	)		(99	)%
Total other income (expense)		69			2,581			(2,512	)		(97	)%
Net income (loss)		(3,087	)		513			(3,600	)		(702	)%

Net loss attributable to non-controlling interests		(11	)		(13	)		2			(15	)%
Net income (loss) attributable to Avenue	$	(3,076	)	$	526		$	(3,602	)		(685	)%

Net income (loss) attributable to common stockholders	$	(3,076	)	$	526		$	(3,602	)		(685	)%

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Research and Development Expenses

Research and development expenses primarily consist of personnel related expenses, including salaries, benefits, travel, and other related expenses, stock-based compensation, payments made to third parties for license and milestone costs related to in-licensed products and technology, payments made to third party contract research organizations for preclinical and clinical studies, investigative sites for clinical trials, consultants, the cost of acquiring and manufacturing clinical trial materials, costs associated with pre-commercialization validation manufacturing, costs associated with regulatory filings, laboratory costs and other supplies.

For the three months ended September 30, 2024 and 2023, research and development expenses were $2.3 million and $0.9 million, respectively. The increase of $1.4 million was associated with a $1.6 million increase in pre-clinical and clinical development costs, partially offset by a $0.2 million decrease in personnel-related costs, including salaries, benefits, and stock-based compensation.

We expect our research and development activities to continue as we attempt to gain regulatory approval for our existing product candidates, reflecting costs associated with the following:

●

employee-related expenses;

●

license fees and milestone payments related to in-licensed product and technology;

●

expenses incurred under agreements with contract research organizations, investigative sites and consultants that conduct our clinical trials;

●

the cost of acquiring and manufacturing clinical trial materials; and

●

costs associated with non-clinical activities, and regulatory interactions, submissions, and approvals.

General and Administrative Expenses

General and administrative expenses consist principally of professional fees for legal and consulting services, market research, personnel-related costs, public reporting company related costs and other general operating expenses not otherwise included in research and development expenses. We expect our general and administrative costs to continue as we seek potential regulatory approval and commercialization of our product candidates.

For the three months ended September 30, 2024 and 2023, general and administrative expenses were $0.8 million and $1.2 million, respectively. The decrease of $0.4 million is related to a decrease of $0.3 million in personnel-related costs, including salaries, benefits, and stock-based compensation and $0.1 million in professional fees.

Interest Income

Interest income was $51,000 and $9,000 for the three months ended September 30, 2024 and 2023, respectively.

Change in Fair Value of Warrant Liabilities

The change in fair value of warrant liabilities was a gain of $19 thousand and $2.6 million for the three months ended September 30, 2024 and 2023, respectively. Warrants to purchase common stock that are required to be classified as a liability are valued at fair market value at each reporting period. The change in the fair value of warrant liabilities was primarily due to the modification of the exercise price as part of a warrant inducement, the exercise of warrants classified as liabilities, and fluctuation in our stock price.

Comparison of the Nine Months Ended September 30, 2024 and 2023

	For the Nine Months Ended
	September 30,						Change
($ in thousands)	2024			2023			$			%
Operating expenses:
Research and development	$	6,080		$	5,149		$	931			18	%
Research and development – licenses acquired		—			4,230			(4,230	)		(100	)%
General and administrative		3,607			3,042			565			19	%
Loss from operations		(9,687	)		(12,421	)		2,734			(22	)%

Other income (expense):
Interest income		152			104			48			46	%
Financing costs – warrant liabilities		—			(332	)		332			(100	)%
Loss on settlement of common stock warrant liabilities		(759	)		—			(759	)		—	%
Change in fair value of warrant liabilities		157			1,544			(1,387	)		(90	)%
Total other income (expense)		(450	)		1,316			(1,766	)		-134	%
Net loss		(10,137	)		(11,105	)		968			-9	%

Net loss attributable to non-controlling interests		(29	)		(88	)		59			(67	)%
Net loss attributable to Avenue	$	(10,108	)	$	(11,017	)	$	909			(8	)%

Net loss attributable to common stockholders	$	(18,918	)	$	(11,017	)	$	(7,901	)		72	%

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Research and Development Expenses

For the nine months ended September 30, 2024 and 2023, research and development expenses were $6.1 million and $5.1 million, respectively. The increase of $1.0 million is primarily associated with a $1.0 million increase in pre-clinical and clinical development costs.

For the nine months ended September 30, 2023, research and development - licenses acquired expenses were $4.2 million related to the AJ201 license acquisition, with no comparable expense in 2024.

General and Administrative Expenses

For the nine months ended September 30, 2024 and 2023, general and administrative expenses were $3.6 million and $3.0 million, respectively. The increase of $0.6 million is primarily related to an increase of $0.5 million in payments to InvaGen, and $0.1 million in common stock issued to Fortress.

Interest Income

Interest income was $0.2 million and $0.1 million for the nine months ended September 30, 2024 and 2023, respectively.

Loss on Settlement of Common Stock Warrant Liabilities

The loss on common stock warrant liabilities was $0.8 million and $0 for the nine months ended September 30, 2024 and 2023, respectively. The new Series A common stock warrants, new Series B common stock warrants, new Series C common stock warrants and new Series D common stock warrants had a fair value of $0.8 million allocated to the liability classified warrants to purchase shares of our common stock originally issued in October 2022 and January 2023 at the time of issuance as a cost of inducement, which was recorded as a loss on settlement of common stock warrant liabilities.

Change in Fair Value of Warrant Liabilities

The change in fair value of warrant liabilities was a gain of $0.2 million and $1.5 million for the nine months ended September 30, 2024 and 2023, respectively. Warrants to purchase common stock that are required to be classified as a liability are valued at fair market value at each reporting period. The change in the fair value of warrant liabilities was primarily due to the modification of the exercise price as part of a warrant inducement, the exercise of warrants classified as liabilities, and fluctuation in our stock price.

Liquidity and Capital Resources

At September 30, 2024, we had $2.6 million in cash and cash equivalents. To date, we have funded our operations primarily with proceeds from various public and private offerings of our common stock. We expect that our expenses will increase substantially for the foreseeable future as we continue to execute on our product development plan and seek opportunities to license or acquire additional products. We will require additional financing to carry out our business plan and implement our strategy, and continue to analyze various alternatives, including potentially obtaining lines of credit, debt or equity financings, including through at-the-market program offerings, or other arrangements. We cannot be sure that any additional funding, if needed, will be available on terms favorable to us or at all. If we obtain funding through a strategic collaboration or licensing arrangement, we may be required to relinquish our rights to our product candidates or marketing territories. Without additional capital, we do not expect our cash will be sufficient to fund our projected operating requirements or allow us to fund our operating plan past the first half of 2025. We regularly evaluate market conditions, our liquidity profile, and various financing alternatives for opportunities to enhance our capital structure.

Cash Flows for the Nine Months Ended September 30, 2024 and 2023

	For the Nine Months Ended
	September 30,
($ in thousands)	2024			2023
Total cash and cash equivalents provided by (used in):
Operating activities	$	(8,262	)	$	(7,127	)
Investing activities		—			(3,000	)
Financing activities		9,076			3,580
Net increase (decrease) in cash and cash equivalents	$	814		$	(6,547	)

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Operating Activities

Net cash and cash equivalents used in operating activities was $8.3 million for the nine months ended September 30, 2024, primarily comprised of our $10.1 million net loss, $0.4 million reduction in common shares issuable to Fortress and $0.2 million change in fair value of warrant liabilities, partially offset by a $0.8 million loss on settlement of common stock warrant liabilities, an increase of $0.4 million in operating assets and liabilities, $0.5 million for common shares issued to Fortress and $0.7 million in share-based compensation.

Net cash and cash equivalents used in operating activities was $7.1 million for the nine months ended September 30, 2023, primarily comprised of our $11.1 million net loss and $1.5 million change in fair value of warrant liability, partially offset by the $3.0 million AJ201 license payment, an increase in operating assets and liabilities of $0.6 million, $0.6 million in share-based compensation, $1.2 million in stock issuance for licenses acquired and $0.1 million common share issuance to Fortress.

Investing Activities

Net cash and cash equivalents used in investing activities was $0.0 for the nine months ended September 30, 2024 and was $3.0 million for the nine months ended September 30, 2023, primarily comprised of the $3.0 million AJ201 license payment.

Financing Activities

Net cash and cash equivalents provided by financing activities was $9.1 million for the nine months ended September 30, 2024, primarily due to $8.2 million in net proceeds from the inducement offer letter agreements we entered into in January 2024 and April 2024 and $0.9 million in net proceeds received from the sale of common stock pursuant to the At the Market Offering Agreement we entered into with H.C. Wainwright & Co. in May 2024.

Net cash and cash equivalents provided by financing activities was $3.6 million for the nine months ended September 30, 2023, primarily comprised of $3.1 million from the registered direct and private placement offerings in January 2023, and $0.6 million from the private placement offering in September 2023, partially offset by $0.1 million of expenses related to the public offering in November 2023.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

We are a smaller reporting company as defined by Rule 12b-2 of the Exchange Act, and are not required to provide the information required under this item.

Item 4. Controls and Procedures

Disclosure Controls and Procedures

We maintain “disclosure controls and procedures,” as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, that are designed to ensure that information required to be disclosed by us in reports that we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in Securities and Exchange Commission rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and interim Chief Financial Officer, to allow timely decisions regarding required disclosure.

The design of any disclosure controls and procedures also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions.

With respect to the quarter ended September 30, 2024, under the supervision and with the participation of our management, we conducted an evaluation of the effectiveness of the design and operations of our disclosure controls and procedures. Based upon this evaluation, the Company’s Chief Executive Officer and interim Chief Financial Officer concluded that, as of such date, the Company’s disclosure controls and procedures are effective.

Management does not expect that our internal control over financial reporting will prevent or detect all errors and all fraud. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control systems 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 a cost-effective control system, no evaluation of internal control over financial reporting can provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud, if any, have been or will be detected.

Changes in Internal Control over Financial Reporting:

There were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that occurred during the fiscal quarter ended September 30, 2024 which have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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Part II. Other Information

Item 1. Legal Proceedings.

To our knowledge, there are no legal proceedings pending against us, other than routine actions and administrative proceedings, and other actions that are not expected to have a material adverse effect on our business, financial condition, results of operations, or cash flows. In the ordinary course of business, however, we may be subject to both insured and uninsured litigation. Suits and claims may be brought against us by customers, suppliers, partners and/or third parties (including tort claims for personal injury arising from clinical trials of our product candidates and property damage) alleging deficiencies in performance, breach of contract, etc., and seeking resulting alleged damages.

Item 1A. Risk Factors

We have disclosed under the heading “Risk Factors” in the 2023 Form 10-K a number of risks which may materially affect our business, financial condition or results of operations. You should carefully consider the “Risk Factors” set forth in the 2023 Form 10-K and the other information set forth elsewhere in this Quarterly Report on Form 10-Q, including under "Forward-looking Statements." You should be aware that these risk factors and other information may not describe every risk our Company faces. Additional risks and uncertainties not currently known to us may also materially adversely affect our business, financial condition and/or results of operations.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

N/A.

Item 3. Defaults Upon Senior Securities.

N/A.

Item 4. Mine Safety Disclosures.

N/A.

Item 5. Other Information.

On November 13, 2024, we agreed to issue 122,850 shares of our common stock to Fortress in exchange for the conversion of $250,000 of indebtedness owed under the Management Services Agreement with Fortress. The issuance was made pursuant to a privately negotiated transaction exempt from the registration requirements of the Securities Act of 1933, as amended, pursuant to Section 4(a)(2) thereof. See Note 9, “Subsequent Events”, to our unaudited consolidated financial statements contained in Part I, Item 1 of this Quarterly Report on Form 10-Q.

During the three months ended September 30, 2024, none of our directors or officers (as defined in Rule 16a-1(f) of the Exchange Act) adopted, modified, or terminated a Rule 10b5-1 trading arrangement or non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408 of Regulation S-K of the Securities Act).

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Item 6. Exhibits

Exhibit No.		Description

3.1		Third Amended and Restated Certificate of Incorporation of Avenue Therapeutics, Inc., filed as Exhibit 3.1 to Form 8-K filed on June 27, 2017 (File No. 001-38114) and incorporated herein by reference.
3.2		Certificate of Amendment of the Third Amended and Restated Certificate of Incorporation of Avenue Therapeutics, Inc., filed as Exhibit 3.1 to Form 10-Q filed on August 14, 2018 (File No. 001-38114) and incorporated herein by reference.
3.3		Certificate of Amendment of the Third Amended and Restated Certificate of Incorporation of Avenue Therapeutics, Inc., filed as Exhibit 3.1 to Form 8-K filed on September 22, 2022 (File No. 001-38114) and incorporated herein by reference.
3.4		Certificate of Amendment of the Third Amended and Restated Certificate of Incorporation of Avenue Therapeutics, Inc., filed as Exhibit 3.1 to Form 8-K filed on February 3, 2023 (File No. 001-38114) and incorporated herein by reference.
3.5		Certificate of Amendment of the Third Amended and Restated Certificate of Incorporation of Avenue Therapeutics, Inc., as filed on February 20, 2024, filed as Exhibit 3.1 to Form 8-K filed on February 23, 2024 (File No. 001-38114) and incorporated herein by reference.
3.6		Certificate of Amendment to the Third Amended and Restated Certificate of Incorporation of Avenue Therapeutics, Inc. as filed on April 25, 2024, filed as exhibit 3.1 to Form 8-K filed on April 26, 2024 (File No. 001-38114) and incorporated herein by reference.
3.7		Second Amended and Restated Bylaws of Avenue Therapeutics, Inc., filed as Exhibit 3.1 to Form 8-K filed on February 10, 2023 (File No. 000-38114) and incorporated herein by reference.
4.3		Form of New Series C Warrant (May 2024), filed as Exhibit 4.1 to Form 8-K filed on May 1, 2024 (File No. 001-38114) and incorporated herein by reference.
4.4		Form of New Series D Warrant (May 2024), filed as Exhibit 4.2 to Form 8-K filed on May 1, 2024 (File No. 001-38114) and incorporated herein by reference.
4.5		Form of Placement Agent Warrant (May 2024), filed as Exhibit 4.3 to Form 8-K filed on May 1, 2024 (File No. 001-38114) and incorporated herein by reference.
10.1		Form of Restricted Stock Unit Agreement, filed as Exhibit 10.1 to Form 8-K filed on September 27, 2024 (File No. 001-38114) and incorporated herein by reference.
31.1		Certification of Principal Executive Officer of Avenue Therapeutics, Inc. pursuant to Rule 13a‑14(a)/15d‑14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, dated November 14, 2024. *
31.2		Certification of Principal Financial Officer of Avenue Therapeutics, Inc. pursuant to Rule 13a‑14(a)/15d‑14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, dated November 14, 2024. *
32.1		Certification of Principal Executive Officer of Avenue Therapeutics, Inc. pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, dated November 14, 2024. **
32.2		Certification of Principal Financial Officer of Avenue Therapeutics, Inc. pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, dated November 14, 2024. **
101		The following financial information from the Company’s Quarterly Report on Form 10‑Q for the period ended September 30, 2024, formatted in Inline Extensible Business Reporting Language (iXBRL): (i) the Condensed Consolidated Balance Sheets, (ii) the Condensed Consolidated Statements of Operations, (iii) the Condensed Consolidated Statements of Stockholders’ Equity, (iv) the Condensed Consolidated Statements of Cash Flows, and (v) Notes to the Condensed Consolidated Financial Statements. *
104		Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101). *

* Filed herewith.

** Furnished herewith.

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SIGNATURES

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


	Avenue Therapeutics, Inc.
	(Registrant)

Date: November 14, 2024	By: /s/ Alexandra MacLean, M.D.
	Alexandra MacLean, M.D.
	Chief Executive Officer and Director


Date: November 14, 2024	By: /s/ David Jin
	David Jin
	Interim Chief Financial Officer and Chief Operating Officer (Duly Authorized Officer, Principal Financial and Accounting Officer)

Exhibit 31.1

Certification of Principal Executive Officer

Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934,

As Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Alexandra MacLean, M.D., certify that:

1.	I have reviewed this Quarterly Report on Form 10-Q of Avenue Therapeutics, Inc.;

2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)

Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)

Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)

Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.	The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)

All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)

Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

	/s/ Alexandra MacLean, M.D.
	Alexandra MacLean, M.D.
	Chief Executive Officer
	(Principal Executive Officer)
	November 14, 2024

Exhibit 31.2

Certification of Principal Financial Officer

Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934,

As Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, David Jin, certify that:

1.	I have reviewed this Quarterly Report on Form 10-Q of Avenue Therapeutics, Inc.;

2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

(a)

(b)

(c)

(d)

5.	The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)

(b)

Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

	/s/ David Jin
	David Jin
	Interim Chief Financial Officer
	(Principal Financial Officer)
	November 14, 2024

Exhibit 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

I, Alexandra MacLean, M.D., Chief Executive Officer of Avenue Therapeutics, Inc. (the “Company”), in compliance with 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, hereby certify that, to my knowledge:

●

The Company’s Quarterly Report on Form 10-Q for the period ended September 30, 2024 (the “Report”) filed with the Securities and Exchange Commission fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

●

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

	/s/ Alexandra MacLean, M.D.
	Alexandra MacLean, M.D.
	Chief Executive Officer
	(Principal Executive Officer)
	November 14, 2024

Exhibit 32.2

Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section 1350,

As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

I, David Jin, Interim Chief Financial Officer of Avenue Therapeutics, Inc. (the “Company”), in compliance with 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, hereby certify that, to my knowledge:

●

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

	/s/ David Jin
	David Jin
	Interim Chief Financial Officer
	(Principal Financial Officer)
	November 14, 2024

Document And Entity Information - shares	9 Months Ended
Document And Entity Information - shares	Sep. 30, 2024	Nov. 11, 2024
Document Information [Line Items]
Entity Central Index Key	0001644963
Entity Registrant Name	AVENUE THERAPEUTICS, INC.
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2024
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
Document Transition Report	false
Entity File Number	001-38114
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	47-4113275
Entity Address, Address Line One	1111 Kane Concourse, Suite 301
Entity Address, City or Town	Bay Harbor Islands
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33154
City Area Code	781
Local Phone Number	652‑4500
Title of 12(b) Security	Common Stock
Trading Symbol	ATXI
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		1,911,633

Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 2,597	$ 1,783
Prepaid expenses and other current assets	28	67
Total assets	2,625	1,850
Current Liabilities:
Warrant liability	29	586
Total current liabilities	973	1,196
Total liabilities	973	1,196
Commitments and contingencies
Stockholders’ equity
Preferred stock ($0.0001 par value), 2,000,000 shares authorized Class A Preferred stock, 250,000 shares issued and outstanding as of December 31, 2023 and 2022, respectively	0	0
Common stock ($0.0001 par value), 200,000,000 and 75,000,000 shares authorized as of September 30, 2024 and December 31, 2023, respectively Common shares, 1,604,158 and 341,324 shares issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	0	3
Additional paid-in capital	103,646	92,507
Accumulated deficit	(101,036)	(90,928)
Total stockholders’ equity attributed to the Company	2,610	1,582
Non-controlling interests	(958)	(928)
Total stockholders’ equity	1,652	654
Total liabilities and stockholders’ equity	2,625	1,850
Nonrelated Party [Member]
Current Liabilities:
Accounts payable and accrued expenses	427	287
Related Party [Member]
Current Liabilities:
Accounts payable and accrued expenses	$ 517	$ 323

Unaudited Condensed Consolidated Balance Sheets (Parentheticals) - $ / shares	Sep. 30, 2024	Dec. 31, 2023
Preferred Stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred Stock, shares authorized (in shares)	2,000,000	2,000,000
Preferred Stock, shares issued (in shares)	250,000	250,000
Preferred Stock, shares outstanding (in shares)	250,000	250,000
Common Stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common Stock, shares authorized (in shares)	200,000,000	75,000,000
Common Stock, shares issued (in shares)	1,604,158	341,324
Common Stock, shares outstanding 1 (in shares)	1,604,158	341,324

Unaudited Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Operating expenses:
Research and development	$ 2,327	$ 907	$ 6,080	$ 5,149
Research and development – licenses acquired	0	0	0	4,230
General and administrative	829	1,161	3,607	3,042
Loss from operations	(3,156)	(2,068)	(9,687)	(12,421)
Other income (expense):
Interest income	51	9	152	104
Financing costs – warrant liabilities	0	0	0	(332)
Loss on settlement of common stock warrant liabilities	0	0	(759)	0
Change in fair value of warrant liabilities	18	2,572	157	1,544
Total other income (expense)	69	2,581	(450)	1,316
Net income (loss)	(3,087)	513	(10,137)	(11,105)
Net loss attributable to non-controlling interests	(11)	(13)	(29)	(88)
Net income (loss) attributable to Avenue	(3,076)	526	(10,108)	(11,017)
Net income (loss) attributable to common stockholders	$ (3,076)	$ 526	$ (18,918)	$ (11,017)
Net income (loss) per common share attributable to common stockholders, basic and diluted (in dollars per share)	$ (1.92)	$ 4.86	$ (17.27)	$ (115.55)
Weighted average number of common shares outstanding, basic and diluted (in shares)	1,600,189	108,210	1,095,180	95,348

Unaudited Condensed Consolidated Statement of Changes in Stockholders' Equity (Deficit) - USD ($) $ in Thousands	ATM Agreement [Member] Preferred Stock [Member] Preferred Class A [Member]	ATM Agreement [Member] Common Stock [Member]	ATM Agreement [Member] Additional Paid-in Capital [Member]	ATM Agreement [Member] Retained Earnings [Member]	ATM Agreement [Member] Noncontrolling Interest [Member]	ATM Agreement [Member]	Preferred Stock [Member] Preferred Class A [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2022							250,000	63,671
Balance at Dec. 31, 2022							$ 0	$ 0	$ 84,456	$ (80,551)	$ (639)	$ 3,266
Share based compensation (in shares)							0	0
Share based compensation							$ 0	$ 0	599	0	0	599
Exercise of warrants (in shares)							0	19,899
Exercise of warrants							$ 0	$ 0	0	0	0	0
Issuance of common stock (in shares)							0	4,997
Issuance of common stock							$ 0	$ 0	72	0	0	72
Non-controlling interest in subsidiaries							0	0	145	0	(145)	0
Net loss attributable to non-controlling interests							0	0	0	0	(88)	(88)
Net loss attributable to common stockholders							$ 0	$ 0	0	(11,017)	0	(11,017)
Balance (in shares) at Sep. 30, 2023							250,000	119,545
Balance at Sep. 30, 2023							$ 0	$ 1	87,917	(91,568)	(872)	(4,522)
Issuance of common stock for license expense (in shares)							0	14,777
Issuance of common stock for license expense							$ 0	$ 0	1,230	0	0	1,230
Shares issued in a private placement offering (in shares)							0	10,227
Shares issued in a private placement offering							$ 0	$ 0	550			550
Issuance of common stock and pre-funded warrants, net of offering costs - registered direct offering and private placement (in shares)							0	5,974
Issuance of common stock and pre-funded warrants, net of offering costs - registered direct offering and private placement							$ 0	$ 1	865	0	0	866
Balance (in shares) at Jun. 30, 2023							250,000	105,630
Balance at Jun. 30, 2023							$ 0	$ 1	86,757	(92,094)	(810)	(6,146)
Share based compensation (in shares)							0	0
Share based compensation							$ 0	$ 0	561	0	0	561
Non-controlling interest in subsidiaries							0	0	49	0	(49)	0
Net loss attributable to non-controlling interests							0	0	0	0	(13)	(13)
Net loss attributable to common stockholders							$ 0	$ 0	0	526	0	526
Balance (in shares) at Sep. 30, 2023							250,000	119,545
Balance at Sep. 30, 2023							$ 0	$ 1	87,917	(91,568)	(872)	(4,522)
Issuance of common stock for license expense (in shares)							0	3,688
Issuance of common stock for license expense							$ 0	$ 0	0	0	0	0
Shares issued in a private placement offering (in shares)							0	10,227
Shares issued in a private placement offering							$ 0	$ 0	550	0	0	550
Balance (in shares) at Dec. 31, 2023							250,000	341,324
Balance at Dec. 31, 2023							$ 0	$ 3	92,507	(90,928)	(928)	654
Share based compensation (in shares)							0	283
Share based compensation							$ 0	$ 0	714	0	0	714
Common shares issuable - Founders Agreement							$ 0	$ 0	(357)	0	0	(357)
Exercise of warrants (in shares)							0	876,806
Exercise of warrants							$ 0	$ 1	9,420	0	0	9,421
Issuance of common stock (in shares)	0	245,617				245,617	0	53,586
Issuance of common stock	$ 0	$ 0	$ 862	$ 0	$ 0	$ 862	$ 0	$ 0	543	0	0	543
Non-controlling interest in subsidiaries							0	0	1	0	(1)	0
Net loss attributable to non-controlling interests							0	0	0	0	(29)	(29)
Net loss attributable to common stockholders							$ 0	$ 0	0	(10,108)	0	(10,108)
Balance (in shares) at Sep. 30, 2024							250,000	1,608,181
Balance at Sep. 30, 2024							$ 0	$ 0	103,646	(101,036)	(958)	1,652
Loss on settlement of common stock warrant liabilities							0	0	1,159	0	0	1,159
Warrant inducement offering costs							$ 0	$ 0	(1,207)	0	0	(1,207)
Reverse split (1-for-75) (in shares)							0	86,542
Reverse split (1-for-75)							$ 0	$ (4)	4	0	0	0
Balance (in shares) at Jun. 30, 2024							250,000	1,189,724
Balance at Jun. 30, 2024							$ 0	$ 0	102,724	(97,960)	(937)	3,827
Share based compensation (in shares)							0	0
Share based compensation							$ 0	$ 0	331	0	0	331
Common shares issuable - Founders Agreement							$ 0	$ 0	14	0	0	14
Exercise of warrants (in shares)							0	253,500
Exercise of warrants							$ 0	$ 0	0	0	0	0
Issuance of common stock (in shares)	0	160,934				160,934
Issuance of common stock	$ 0	$ 0	$ 567	$ 0	$ 0	$ 567
Non-controlling interest in subsidiaries							0	0	10	0	(10)	0
Net loss attributable to non-controlling interests							0	0	0	0	(11)	(11)
Net loss attributable to common stockholders							$ 0	$ 0	0	(3,076)	0	(3,076)
Balance (in shares) at Sep. 30, 2024							250,000	1,608,181
Balance at Sep. 30, 2024							$ 0	$ 0	$ 103,646	$ (101,036)	$ (958)	$ 1,652

Unaudited Condensed Consolidated Statement of Changes in Stockholders' Equity (Deficit) (Parentheticals)	9 Months Ended
	Sep. 30, 2024
Stock Split, Conversion Ratio	75

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net loss	$ (10,137)	$ (11,105)
Reconciliation of net loss to net cash used in operating activities:
Share based compensation	714	599
Loss on settlement of common stock warrant liabilities	759	(0)
Change in fair value of warrant liabilities	(157)	(1,544)
Issuance of Stock for Licenses Acquired	0	1,230
Research and development-licenses acquired, expense	0	3,000
Issuance of common stock to Fortress	543	72
Common shares issuable - Founders Agreement	(357)	0
Changes in operating assets and liabilities:
Other receivables - related party	0	(13)
Prepaid expenses and other current assets	39	119
Deferred financing costs	0	(239)
Net cash used in operating activities	(8,262)	(7,127)
Cash flows from investing activities:
Purchase of research and development licenses	0	(3,000)
Net cash used in investing activities	0	(3,000)
Cash flows from financing activities:
Issuance of common stock and pre-funded warrants, net of offering costs - registered direct offering and private placement	0	3,101
Shares issued in a private placement offering	0	550
Deferred financing costs	0	(71)
Proceeds from ATM sales of common stock, net of issuance costs	862	0
Exercise of warrants	9,421	0
Warrant transaction costs	(1,207)	0
Net cash provided by financing activities	9,076	3,580
Net change in cash and cash equivalents	814	(6,547)
Cash and cash equivalents, beginning of period	1,783	6,708
Cash and cash equivalents, end of period	2,597	161
Supplemental cash flow information:
Unpaid financing costs	0	239
Issuance of common shares - Founders Agreement	543	0
Related Party [Member]
Changes in operating assets and liabilities:
Accounts payable and accrued expenses	140	511
Nonrelated Party [Member]
Changes in operating assets and liabilities:
Accounts payable and accrued expenses	$ 194	$ 243

Note 1 - Organization, Plan of Business Operations

9 Months Ended

Sep. 30, 2024

Notes to Financial Statements

Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]

Note 1 - Organization, Plan of Business Operations

Authorized Share Increase

Going Concern

Note 2 - Significant Accounting Policies

9 Months Ended

Sep. 30, 2024

Notes to Financial Statements

Significant Accounting Policies [Text Block]

Note 2 - Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

Segments

Use of Estimates

Fair Value Measurements

The accounting guidance requires fair value measurements be classified and disclosed in one of the following three categories:

Level 1: Quoted prices in active markets for identical assets or liabilities.

Level 2: Observable inputs other than Level 1 prices for similar assets or liabilities that are directly or indirectly observable in the marketplace.

Non-Controlling Interests

Net Loss per Share

	*As of*
	*September 30,*
	*2024*		*2023*
Unvested restricted stock units/awards		235,851		1,311
Warrants		1,476,200		81,043
Options		256,474		22,474
Class A Preferred shares		223		223
Total potential dilutive effect		1,968,748		105,051

Summary of Significant Accounting Policies

There have been no material changes in the Company’s significant accounting policies to those previously disclosed in the 2023 Form 10-K.

Accounting Standards Not Yet Adopted

Note 3 - License Supplier Agreement

9 Months Ended

Sep. 30, 2024

Notes to Financial Statements

License Agreement Disclosure [Text Block]

Note 3 — Licenses/Supplier Agreements

IV Tramadol License

Baergic Licenses

AnnJi License Agreement

Note 4 - Related Party Agreements

9 Months Ended

Sep. 30, 2024

Notes to Financial Statements

Note 4 — Related Party Agreements

Founders Agreement and Management Services Agreement with Fortress

Annual Equity Fee

Financing Equity Fee

Founders Agreement and Management Services Agreement with Baergic

Note 5 - Accounts Payable and Accrued Expenses

9 Months Ended

Sep. 30, 2024

Notes to Financial Statements

Accounts Payable and Accrued Liabilities Disclosure [Text Block]

Note 5 — Accounts Payable and Accrued Expenses

Accounts payable, accrued expenses, and other liabilities consisted of the following (in thousands):

	*As of September 30,*		*As of December 31,*
	*2024*		*2023*
Accounts payable	$	140	$	78
Accrued employee compensation		39		11
Accrued contracted services and other		248		198
Total accounts payable and accrued expenses	$	427	$	287

Note 6 - Commitments and Contingencies

9 Months Ended

Sep. 30, 2024

Notes to Financial Statements

Commitments and Contingencies Disclosure [Text Block]

Note 6 - Commitments and Contingencies

Leases

The Company is not party to any leases for office space or equipment.

Litigation

Note 7 - Stockholder's Equity

9 Months Ended

Sep. 30, 2024

Notes to Financial Statements

Equity [Text Block]

Note 7 - Stockholder's Equity

Class A Preferred Stock

Common Stock

Reverse Stock Split

All share and per share information has been retroactively adjusted to give effect to the Reverse Stock Split for all periods presented, unless otherwise indicated.

Capital Raises

2021 Shelf

January 2024 Warrant Inducement and Private Placement

The key inputs for the Black-Scholes Model calculations on January 5, 2024 were as follows:

	January 2023			New Series A			New Series B
	Warrants			Warrants			Warrants
Stock price	$	14.25		$	14.25		$	14.25
Risk-free interest rate		4.40	%		4.02	%		4.40	%
Expected dividend yield		—			—			—
Expected term in years		2.1			5.0			1.5
Expected volatility		185	%		138	%		187	%

May 2024 Warrant Inducement and Private Placement

The key inputs for the Black-Scholes Model calculations on May 1, 2024 were as follows:

	*October 2022*			*Series C*			*Series D*			*Placement Agent*
	*Warrants*			*Warrants*			*Warrants*			*Warrants*
Stock price	$	4.76		$	4.76		$	4.76		$	4.76
Risk-free interest rate		5	%		4.64	%		4.96	%		4.64	%
Expected dividend yield		—			—			—			—
Expected term in years		3.4			5.0			1.5			5.0
Expected volatility		160	%		141	%		132	%		141	%

ATM Facility

Equity Incentive Plan

Total shares available for the issuance of stock-based awards under the Company’s 2015 Incentive Plan was 4,575,701 shares at September 30, 2024.

Restricted Stock Units and Restricted Stock Awards

The following table summarizes the restricted stock unit and award activity during the nine months ended September 30, 2024:

	*Number of*			*Weighted*
	*Units and*			*Average Grant*
	*Awards*			*Date Fair Value*
Unvested balance at December 31, 2023		1,311		$	196.21
Granted		—			—
Forfeited		—			—
Vested		(283	)		85.50
Unvested balance at March 31, 2024		1,028		$	226.69
Unvested balance at June 30, 2024		1,028		$	226.69
Granted		235,000			2.46
Forfeited		—			—
Vested		—			—
Unvested balance at September 30, 2024		236,028		$	3.44

Stock Options

The following table summarizes stock option activity during the nine months ended September 30, 2024:

					*Weighted*
					*Average*
			*Weighted*		*Remaining*		*Aggregate*
	*Number*		*Average*		*Contractual*		*Intrinsic Value*
	*of Options*		*Exercise Price*		*Term (years)*		*(in thousands)*
Outstanding at December 31, 2023		22,474	$	85.50		9.5	$	—
Granted		234,000	$	2.46			$	—
Exercised		—	$	—			$	—
Cancelled/forfeited		—	$	—			$	—
Expired		—	$	—			$	—
Outstanding at Balance at September 30, 2024		256,474	$	9.74		9.9	$	—
Expected to vest		246,802	$	6.77		9.9	$	—
Exercisable		9,672	$	85.50		8.7	$	—

The Company estimated the fair value of stock options granted in the periods presented utilizing a Black-Scholes option-pricing model utilizing the following assumptions:

	*For the Nine Months Ended*
	*September 30,*
	*2024*	*2023*
Volatility	135%	124.9 - 125.7%
Expected term (in years)	5.64	5.8 - 5.9
Risk-free rate	3.6%	4.1%
Expected dividend yield	—%	—%

Stock-based compensation expense has been reported in the Company's condensed consolidated statements of operations as follows:

	*For the Three Months Ended*				*For the Nine Months Ended*
	*September 30,*				*September 30,*
	*2024*		*2023*		*2024*		*2023*
Research and development	$	89	$	144	$	179	$	150
General and administrative		242		417		535		449
Total stock-based compensation expense	$	331	$	561	$	714	$	599

Stock Warrants

The following table summarizes the warrant activity for the nine months ended September 30, 2024 and 2023:

				*Weighted*
				*Average*		*Aggregate*
				*Exercise*		*Intrinsic Value*
	*Warrants*			*Price*		*(in thousands)*
Outstanding, December 31, 2023		524,601		$	32.42	$	—
Granted		441,076			6.20
Exercised		(220,538	)		22.55
Outstanding, March 31, 2024		745,139		$	29.50	$	—
Granted		1,420,741			6.25
Exercised		(689,680	)		6.20
Outstanding, June 30, 2024		1,476,200		$	8.64	$	—
Outstanding, September 30, 2024		1,476,200		$	8.64	$	—

Upon the exercise of warrants, the Company will issue new shares of its common stock.

InvaGen Share Repurchase

Note 8 - Common Stock Warrant Liabilities

9 Months Ended

Sep. 30, 2024

Notes to Financial Statements

Common Stock Warrant Liabilities [Text Block]

Note 8 - Common Stock Warrant Liabilities

Warrant Liability

Fair Value of Warrant Liabilities

Warrant liabilities are categorized within Level 3 of the fair value hierarchy and are measured at fair value on a recurring basis as follows (in thousands):

	*October 2022*			*January 2023*
	*Warrants*			*Warrants*			*Total*
Fair value of warrants outstanding as of December 31, 2023	$	426		$	160		$	586
Change in fair value of warrants		(13	)		129			116
Exercise of warrants		—			(289	)		(289	)
Fair value of warrants outstanding as of March 31, 2024	$	413		$	—		$	413
Change in fair value of warrants		(255	)		—			(255	)
Exercise of warrants		(111	)		—			(111	)
Fair value of warrants outstanding as of June 30, 2024	$	47		$	—		$	47
Change in fair value of warrants		(18	)		—			(18	)
Exercise of warrants		—			—			—
Fair value of warrants outstanding as of September 30, 2024	$	29		$	—		$	29

The key inputs for the October 2022 Warrants using the Black-Scholes model were as follows:

	*September 30,*			*December 31,*
	*2024*			*2023*
Stock price	$	2.49		$	12.00
Risk-free interest rate		3.58	%		3.84	%
Expected dividend yield		—			—
Expected term in years		3.0			3.8
Expected volatility		164	%		148	%

Note 9 - Subsequent Events

9 Months Ended

Sep. 30, 2024

Notes to Financial Statements

Subsequent Events [Text Block]

Note 9 - Subsequent Events

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Sep. 30, 2024
Insider Trading Arr Line Items
Rule 10b5-1 Arrangement Adopted [Flag]	false
Non-Rule 10b5-1 Arrangement Adopted [Flag]	false
Rule 10b5-1 Arrangement Terminated [Flag]	false
Non-Rule 10b5-1 Arrangement Terminated [Flag]	false

Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2024

Accounting Policies [Abstract]

Basis of Accounting, Policy [Policy Text Block]

Basis of Presentation and Principles of Consolidation

Segment Reporting, Policy [Policy Text Block]

Segments

Use of Estimates, Policy [Policy Text Block]

Use of Estimates

Fair Value Measurement, Policy [Policy Text Block]

Fair Value Measurements

The accounting guidance requires fair value measurements be classified and disclosed in one of the following three categories:

Level 1: Quoted prices in active markets for identical assets or liabilities.

Level 2: Observable inputs other than Level 1 prices for similar assets or liabilities that are directly or indirectly observable in the marketplace.

Noncontrolling Interests [Policy Text Block]

Non-Controlling Interests

Earnings Per Share, Policy [Policy Text Block]

Net Loss per Share

	*As of*
	*September 30,*
	*2024*		*2023*
Unvested restricted stock units/awards		235,851		1,311
Warrants		1,476,200		81,043
Options		256,474		22,474
Class A Preferred shares		223		223
Total potential dilutive effect		1,968,748		105,051

New Accounting Pronouncements, Policy [Policy Text Block]

Summary of Significant Accounting Policies

There have been no material changes in the Company’s significant accounting policies to those previously disclosed in the 2023 Form 10-K.

Accounting Standards Not Yet Adopted

Note 2 - Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	*As of*
	*September 30,*
	*2024*		*2023*
Unvested restricted stock units/awards		235,851		1,311
Warrants		1,476,200		81,043
Options		256,474		22,474
Class A Preferred shares		223		223
Total potential dilutive effect		1,968,748		105,051

Note 5 - Accounts Payable and Accrued Expenses (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

	*As of September 30,*		*As of December 31,*
	*2024*		*2023*
Accounts payable	$	140	$	78
Accrued employee compensation		39		11
Accrued contracted services and other		248		198
Total accounts payable and accrued expenses	$	427	$	287

Note 7 - Stockholder's Equity (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	*September 30,*			*December 31,*
	*2024*			*2023*
Stock price	$	2.49		$	12.00
Risk-free interest rate		3.58	%		3.84	%
Expected dividend yield		—			—
Expected term in years		3.0			3.8
Expected volatility		164	%		148	%

Schedule of Unvested Restricted Stock Units Roll Forward [Table Text Block]

	*Number of*			*Weighted*
	*Units and*			*Average Grant*
	*Awards*			*Date Fair Value*
Unvested balance at December 31, 2023		1,311		$	196.21
Granted		—			—
Forfeited		—			—
Vested		(283	)		85.50
Unvested balance at March 31, 2024		1,028		$	226.69
Unvested balance at June 30, 2024		1,028		$	226.69
Granted		235,000			2.46
Forfeited		—			—
Vested		—			—
Unvested balance at September 30, 2024		236,028		$	3.44

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

					*Weighted*
					*Average*
			*Weighted*		*Remaining*		*Aggregate*
	*Number*		*Average*		*Contractual*		*Intrinsic Value*
	*of Options*		*Exercise Price*		*Term (years)*		*(in thousands)*
Outstanding at December 31, 2023		22,474	$	85.50		9.5	$	—
Granted		234,000	$	2.46			$	—
Exercised		—	$	—			$	—
Cancelled/forfeited		—	$	—			$	—
Expired		—	$	—			$	—
Outstanding at Balance at September 30, 2024		256,474	$	9.74		9.9	$	—
Expected to vest		246,802	$	6.77		9.9	$	—
Exercisable		9,672	$	85.50		8.7	$	—

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	*For the Nine Months Ended*
	*September 30,*
	*2024*	*2023*
Volatility	135%	124.9 - 125.7%
Expected term (in years)	5.64	5.8 - 5.9
Risk-free rate	3.6%	4.1%
Expected dividend yield	—%	—%

Share-Based Payment Arrangement, Cost by Plan [Table Text Block]

	*For the Three Months Ended*				*For the Nine Months Ended*
	*September 30,*				*September 30,*
	*2024*		*2023*		*2024*		*2023*
Research and development	$	89	$	144	$	179	$	150
General and administrative		242		417		535		449
Total stock-based compensation expense	$	331	$	561	$	714	$	599

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

				*Weighted*
				*Average*		*Aggregate*
				*Exercise*		*Intrinsic Value*
	*Warrants*			*Price*		*(in thousands)*
Outstanding, December 31, 2023		524,601		$	32.42	$	—
Granted		441,076			6.20
Exercised		(220,538	)		22.55
Outstanding, March 31, 2024		745,139		$	29.50	$	—
Granted		1,420,741			6.25
Exercised		(689,680	)		6.20
Outstanding, June 30, 2024		1,476,200		$	8.64	$	—
Outstanding, September 30, 2024		1,476,200		$	8.64	$	—

Warrant [Member]

Notes Tables

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	January 2023			New Series A			New Series B
	Warrants			Warrants			Warrants
Stock price	$	14.25		$	14.25		$	14.25
Risk-free interest rate		4.40	%		4.02	%		4.40	%
Expected dividend yield		—			—			—
Expected term in years		2.1			5.0			1.5
Expected volatility		185	%		138	%		187	%

	*October 2022*			*Series C*			*Series D*			*Placement Agent*
	*Warrants*			*Warrants*			*Warrants*			*Warrants*
Stock price	$	4.76		$	4.76		$	4.76		$	4.76
Risk-free interest rate		5	%		4.64	%		4.96	%		4.64	%
Expected dividend yield		—			—			—			—
Expected term in years		3.4			5.0			1.5			5.0
Expected volatility		160	%		141	%		132	%		141	%

Note 8 - Common Stock Warrant Liabilities (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	*October 2022*			*January 2023*
	*Warrants*			*Warrants*			*Total*
Fair value of warrants outstanding as of December 31, 2023	$	426		$	160		$	586
Change in fair value of warrants		(13	)		129			116
Exercise of warrants		—			(289	)		(289	)
Fair value of warrants outstanding as of March 31, 2024	$	413		$	—		$	413
Change in fair value of warrants		(255	)		—			(255	)
Exercise of warrants		(111	)		—			(111	)
Fair value of warrants outstanding as of June 30, 2024	$	47		$	—		$	47
Change in fair value of warrants		(18	)		—			(18	)
Exercise of warrants		—			—			—
Fair value of warrants outstanding as of September 30, 2024	$	29		$	—		$	29

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	*September 30,*			*December 31,*
	*2024*			*2023*
Stock price	$	2.49		$	12.00
Risk-free interest rate		3.58	%		3.84	%
Expected dividend yield		—			—
Expected term in years		3.0			3.8
Expected volatility		164	%		148	%

Note 1 - Organization, Plan of Business Operations (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	Sep. 30, 2024	May 10, 2024	Jan. 09, 2024	Dec. 31, 2023
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.0001	$ 0.0001	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized (in shares)	200,000,000		200,000,000	75,000,000
Retained Earnings (Accumulated Deficit)	$ (101,036)			$ (90,928)

Note 2 - Significant Accounting Policies (Details Textual) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2024 USD ($) shares
Number of Reportable Segments		1
Deemed Dividends \| $	$ 0	$ 8,800
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants (in shares) \| shares		33,412
Number of Operating Segments		1

Note 2 - Significant Accounting Policies - Antidilutive Securities (Details) - shares	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Antidilutive securities (in shares)	1,968,748	105,051
Restricted Stock Units (RSUs) [Member]
Antidilutive securities (in shares)	235,851	1,311
Warrant [Member]
Antidilutive securities (in shares)	1,476,200	81,043
Share-Based Payment Arrangement, Option [Member]
Antidilutive securities (in shares)	256,474	22,474
Class A Preferred Shares [Member]
Antidilutive securities (in shares)	223	223

Note 3 - License Supplier Agreement (Details Textual) - USD ($) $ / shares in Units, $ in Thousands						1 Months Ended	3 Months Ended	4 Months Ended	9 Months Ended
	Sep. 26, 2023	Apr. 27, 2023	Mar. 30, 2023	Feb. 28, 2023	Oct. 29, 2018	Dec. 31, 2019	Sep. 30, 2023	Jun. 17, 2015	Sep. 30, 2023
Contractual Obligation Development Expense						$ 81,500
Contractual Obligation, Commercial Expense						$ 151,000
Stock Issued During Period, Value, License Expense							$ 0		$ 1,230
AnnJi [Member]
License Agreement, Purchase Consideration				$ 3,000
Payments to Acquire License		$ 2,000
Acquired License Payable Within 180 Days				1,000
Maximum Reimbursement Amount In Connection With Product Clinical Trial				10,800
Maximum Reimbursement Amount In Connection With Certain Development Milestones				14,500
Maximum Reimbursement Amount In Connection With Certain Drug Development Milestone				27,500
Maximum Reimbursement Amount Upon Achievement of Sales Milestone				165,000
Stock Issued During Period, Shares, License Expense (in shares)			11,089
Stock Issued During Period, Value, License Expense			$ 900
Stock Issuable During Period, Shares, Upon Enrollment of Patient (in shares)	3,688
Stock Issuable During Period, Value, Upon Enrollment of Patient	$ 300
AnnJi [Member] \| Minimum [Member]
Sales Milestone Required for Maximum Reimbursement				75,000
Annual Sale Threshold for Royalty Payment				50,000
AnnJi [Member] \| Maximum [Member]
Sales Milestone Required for Maximum Reimbursement				750,000
Annual Sale Threshold for Royalty Payment				$ 300,000
Revogenex License [Member]
Contractual Obligation, Maximum Future Payments								$ 3,000
Baergic Licenses [Member] \| CCHMC [Member]
Percentage of Equity Fee						5.00%
Polpharma [Member]
Payments to Acquire in Process Research and Development					$ 2,000
Fortress Biotech Inc [Member] \| Iv Tramadol [Member] \| Upfront Payment [Member]
Payments to Acquire in Process Research and Development								2,000
Percentage of Equity Fee						20.00%
Fortress Biotech Inc [Member] \| Iv Tramadol [Member] \| Additional Payment [Member]
Payments to Acquire in Process Research and Development						$ 1,000		$ 1,000
Baergic Licenses [Member] \| Upfront Payment [Member] \| CCHMC [Member]
Payments to Acquire in Process Research and Development						200
Baergic Licenses [Member] \| Upfront Payment [Member] \| AZERBAIJAN
Payments to Acquire in Process Research and Development						$ 3,000
AnnJi [Member]
Right to Sell Common Stock, Price Per Share (in dollars per share)	$ 2.1

Note 4 - Related Party Agreements (Details Textual) - USD ($)		1 Months Ended			3 Months Ended		9 Months Ended
	Mar. 09, 2017	Jan. 31, 2024	Jan. 31, 2023	Feb. 28, 2015	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2022	Nov. 08, 2022
Fortress [Member]
Percentage of Fully-diluted Outstanding Equity				2.50%
Percentage of Equity or Debt Fnancing				2.50%
Annual Equity Fee Expense					$ 0	$ 0	$ 0	$ 0
Financing Equity Fee					14,000	100,000	200,000	200,000
Fortress [Member] \| Avenue Baergic Founders Agreement [Member]
Excess in Net Assets Value	$ 100,000,000
Fortress [Member] \| Management Services Agreement [Member]
Costs and Expenses					$ 100,000	$ 100,000	$ 400,000	$ 400,000
Fortress [Member] \| The 2023 Annual Equity Fee [Member]
Stock Issued During Period, Shares, New Issues (in shares)		22,476
Fortress [Member] \| The 2022 Annual Equity Fee [Member]
Stock Issued During Period, Shares, New Issues (in shares)			3,085
Fortress [Member] \| Financing Equity Fee [Member]
Stock Issued During Period, Shares, New Issues (in shares)						5,579	31,110	7,491
Stock Issuable, Shares, New Issuance (in shares)					4,023
Fortress [Member] \| Research and Development Expense [Member] \| Management Services Agreement [Member]
Service Provided, Expense Recorded, Percentage				50.00%
Fortress [Member] \| General and Administrative Expense [Member] \| Management Services Agreement [Member]
Service Provided, Expense Recorded, Percentage				50.00%
BaergicBio, Inc.[Member] \| Avenue Baergic Founders Agreement [Member]
Percentage of Equity Fee										2.50%
Percentage Of Additional Consideration Of Equity Fee									2.50%
Percentage Considered For The Calculation Of One-Time Fee									4.50%
Term of Agreement (Year)	5 years
Annual Consulting Fee	$ 500,000
Increase in Annual Consulting Fee	$ 1,000,000

Note 5 - Accounts Payable and Accrued Expenses - Accounts Payable and Accrued Expenses (Details) - Nonrelated Party [Member] - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Accounts payable	$ 140	$ 78
Accrued employee compensation	39	11
Accrued contracted services and other	248	198
Total accounts payable and accrued expenses	$ 427	$ 287

Note 7 - Stockholder's Equity (Details Textual)							3 Months Ended			9 Months Ended
Note 7 - Stockholder's Equity (Details Textual)	Jun. 24, 2024 shares	May 10, 2024 USD ($) $ / shares	May 01, 2024 USD ($)	Apr. 25, 2024 shares	Jan. 05, 2024 USD ($) $ / shares shares	Feb. 03, 2023 USD ($)	Sep. 30, 2024 USD ($) $ / shares shares	Mar. 31, 2024 $ / shares shares	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) $ / shares shares	Sep. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2024 $ / shares	May 31, 2024 $ / shares shares	Apr. 28, 2024 $ / shares shares	Jan. 31, 2024 $ / shares shares	Jan. 09, 2024 $ / shares shares	Dec. 31, 2023 $ / shares shares	Nov. 30, 2023 $ / shares shares	Jan. 31, 2023 $ / shares shares	Jan. 30, 2023 shares	Sep. 22, 2022	Dec. 31, 2021 shares	Sep. 13, 2019 $ / shares	Sep. 13, 2016 shares
Preferred Stock, Shares Authorized (in shares)							2,000,000			2,000,000							2,000,000							2,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share) \| $ / shares							$ 0.0001			$ 0.0001							$ 0.0001
Common Stock, Shares Authorized (in shares)							200,000,000			200,000,000						200,000,000	75,000,000
Stockholders' Equity Note, Stock Split, Conversion Ratio										75
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares							$ 8.64	$ 29.5		$ 8.64		$ 8.64					$ 32.42
Fair Value Adjustment of Warrants \| $							$ (18,000)		$ (2,572,000)	$ (157,000)	$ (1,544,000)
Proceeds from Warrant Exercises \| $										$ 9,421,000	0
Common Stock, Par or Stated Value Per Share (in dollars per share) \| $ / shares		$ 0.0001					$ 0.0001			$ 0.0001						$ 0.0001	$ 0.0001
Proceeds from Issuance of Common Stock \| $										$ 862,000	$ 0
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)							(0)	283,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)										234,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) \| $ / shares										$ 2.15	$ 85.5
Invagen Pharmaceuticals Inc [Member]
Contingent Fee, Percentage of Proceeds of Future Financings						7.50%
Contingent Fee, Maximum Allowable Amount \| $						$ 4,000,000
Payment of Contingent Fee \| $										$ 700,000
Restricted Stock Units (RSUs) [Member]
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount \| $							$ 500,000			$ 500,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)										1 year 1 month 6 days
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)										45
Deferred Restricted Stock Units [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number (in shares)							235,000			235,000
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)										1 year 3 months 18 days
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount \| $							$ 900,000			$ 900,000
Two Thousand Fifteen Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)	5,070,223																					3,556
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)							4,575,701			4,575,701
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)	10 years
Two Thousand Fifteen Incentive Plan [Member] \| Maximum [Member] \| Incentive Stock Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)	5,000,000
Two Thousand Fifteen Incentive Plan [Member] \| Maximum [Member] \| Share-Based Payment Arrangement, Nonemployee [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)																				70,223
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)	500,000
January 2023 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)																			25,871
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares					$ 22.545														$ 116.25
Fair Value Adjustment of Warrants \| $					$ 100,000
November 2023 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)														221,333				194,667
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares					$ 22.545									$ 22.545				$ 22.545
New Series A Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)					220,538
Warrants and Rights Outstanding, Term (Year)					5 years
Warrants and Rights Issued Classified as Deemed Dividend \| $					$ 600,000
New Series B Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)					220,538
Warrants and Rights Issued Classified as Deemed Dividend \| $					$ 4,300,000
Existing Warrants [Member]
Proceeds from Warrant Exercises \| $					$ 4,500,000
October 2022 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)														27,271
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares														$ 116.25
Fair Value Adjustment of Warrants \| $			$ (100,000)
January 2024 Warrant Inducement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)														441,076	25,871
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares														$ 22.545	$ 22.545
May 2024 Warrant Inducement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)													689,680
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares													$ 6.2	6.2
Fair Value Adjustment of Warrants \| $			200,000
Warrants and Rights Issued Classified as Deemed Dividend \| $			4,500,000
Proceeds from Warrant Exercises \| $			$ 3,700,000
Warrant Payment, Price Per Share (in dollars per share) \| $ / shares														$ 0.125
New Class C Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)														689,680
New Class D Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)														689,680
Shelf [Member]
Securities, Remaining Available for Sale, Amount \| $							$ 24,100,000			$ 24,100,000
ATM Agreement [Member]
Offering Agreement, Maximum Amount \| $		$ 3,850,000
Commission Fee, Percent Fee		3.00%
Stock Issued During Period, Shares, New Issues (in shares)							160,934			245,617
Proceeds from Issuance of Common Stock \| $							$ 600,000			$ 900,000
Common Stock [Member]
Stock Issued During Period, Shares, Reverse Stock Splits (in shares)				86,518						86,542
Stock Issued During Period, Shares, New Issues (in shares)										53,586	4,997
Common Stock [Member] \| ATM Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)							160,934			245,617
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio				75
Preferred Class A [Member]
Preferred Stock, Shares Authorized (in shares)																								250,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share) \| $ / shares																							$ 0.0001
Preferred Stock, Convertible, Conversion Ratio																					1,125

Note 7 - Stockholders' Equity - Schedule of Warrants under the Black-Scholes Model (Details)	Sep. 30, 2024	Jan. 05, 2024	Dec. 31, 2023
Measurement Input, Share Price [Member] \| January 2023 Warrants [Member]
Warrant Liability		14.25
Measurement Input, Share Price [Member] \| New Series A Warrants [Member]
Warrant Liability		14.25
Measurement Input, Share Price [Member] \| New Series B Warrants [Member]
Warrant Liability		14.25
Measurement Input, Share Price [Member] \| October 2022 Warrants [Member]
Warrant Liability	2.49	4.76	12
Measurement Input, Share Price [Member] \| New Series C Warrants [Member]
Warrant Liability		4.76
Measurement Input, Share Price [Member] \| New Series D Warrants [Member]
Warrant Liability		4.76
Measurement Input, Share Price [Member] \| Placement Agents Warrants [Member]
Warrant Liability		4.76
Measurement Input, Risk Free Interest Rate [Member] \| January 2023 Warrants [Member]
Warrant Liability		0.044
Measurement Input, Risk Free Interest Rate [Member] \| New Series A Warrants [Member]
Warrant Liability		0.0402
Measurement Input, Risk Free Interest Rate [Member] \| New Series B Warrants [Member]
Warrant Liability		0.044
Measurement Input, Risk Free Interest Rate [Member] \| October 2022 Warrants [Member]
Warrant Liability	0.0358	0.05	0.0384
Measurement Input, Risk Free Interest Rate [Member] \| New Series C Warrants [Member]
Warrant Liability		0.0464
Measurement Input, Risk Free Interest Rate [Member] \| New Series D Warrants [Member]
Warrant Liability		0.0496
Measurement Input, Risk Free Interest Rate [Member] \| Placement Agents Warrants [Member]
Warrant Liability		0.0464
Measurement Input, Expected Dividend Rate [Member] \| January 2023 Warrants [Member]
Warrant Liability		0
Measurement Input, Expected Dividend Rate [Member] \| New Series A Warrants [Member]
Warrant Liability		0
Measurement Input, Expected Dividend Rate [Member] \| New Series B Warrants [Member]
Warrant Liability		0
Measurement Input, Expected Dividend Rate [Member] \| October 2022 Warrants [Member]
Warrant Liability	0	0	0
Measurement Input, Expected Dividend Rate [Member] \| New Series C Warrants [Member]
Warrant Liability		0
Measurement Input, Expected Dividend Rate [Member] \| New Series D Warrants [Member]
Warrant Liability		0
Measurement Input, Expected Dividend Rate [Member] \| Placement Agents Warrants [Member]
Warrant Liability		0
Measurement Input, Expected Term [Member] \| January 2023 Warrants [Member]
Warrant Liability		2.1
Measurement Input, Expected Term [Member] \| New Series A Warrants [Member]
Warrant Liability		5
Measurement Input, Expected Term [Member] \| New Series B Warrants [Member]
Warrant Liability		1.5
Measurement Input, Expected Term [Member] \| October 2022 Warrants [Member]
Warrant Liability	3	3.4	3.8
Measurement Input, Expected Term [Member] \| New Series C Warrants [Member]
Warrant Liability		5
Measurement Input, Expected Term [Member] \| New Series D Warrants [Member]
Warrant Liability		1.5
Measurement Input, Expected Term [Member] \| Placement Agents Warrants [Member]
Warrant Liability		5
Measurement Input, Price Volatility [Member] \| January 2023 Warrants [Member]
Warrant Liability		1.85
Measurement Input, Price Volatility [Member] \| New Series A Warrants [Member]
Warrant Liability		1.38
Measurement Input, Price Volatility [Member] \| New Series B Warrants [Member]
Warrant Liability		1.87
Measurement Input, Price Volatility [Member] \| October 2022 Warrants [Member]
Warrant Liability	1.64	1.60	1.48
Measurement Input, Price Volatility [Member] \| New Series C Warrants [Member]
Warrant Liability		1.41
Measurement Input, Price Volatility [Member] \| New Series D Warrants [Member]
Warrant Liability		1.32
Measurement Input, Price Volatility [Member] \| Placement Agents Warrants [Member]
Warrant Liability		1.41

Note 7 - Stockholders' Equity - Restricted Stock Unit and Award Activity (Details) - $ / shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Mar. 31, 2024	Sep. 30, 2024
Unvested balance (in shares)	1,028	1,311	1,311
Unvested balance, Weighted average grant date fair value (in dollars per share)	$ 226.69	$ 196.21	$ 196.21
Granted (in shares)	235,000	0
Granted, Weighted average grant date fair value (in dollars per share)	$ 2.46	$ 0
Forfeited (in shares)	0	0
Forfeited, Weighted average grant date fair value (in dollars per share)	$ 0	$ 0
Vested (in shares)	0	(283)
Vested, Weighted average grant date fair value (in dollars per share)	$ 0	$ 85.5
Unvested balance (in shares)	236,028	1,028	236,028
Unvested balance, Weighted average grant date fair value (in dollars per share)	$ 3.44	$ 226.69	$ 3.44

Note 7 - Stockholders' Equity - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Outstanding, options (in shares)	22,474
Outstanding, weighted average exercise price (in dollars per share)	$ 85.5
Outstanding, remaining term (Year)	9 years 10 months 24 days	9 years 6 months
Outstanding, aggregate intrinsic value		$ 0
Granted, options (in shares)	234,000
Granted, weighted average exercise price (in dollars per share)	$ 2.46
Exercised, options (in shares)	0
Exercised, weighted average exercise price (in dollars per share)	$ 0
Cancelled/forfeited, options (in shares)	0
Cancelled/forfeited, weighted average exercise price (in dollars per share)	$ 0
Expired, options (in shares)	0
Expired, weighted average exercise price (in dollars per share)	$ 0
Outstanding, options (in shares)	256,474	22,474
Outstanding, weighted average exercise price (in dollars per share)	$ 9.74	$ 85.5
Expected to vest, options (in shares)	246,802
Expected to vest, weighted average exercise price (in dollars per share)	$ 6.77
Expected to vest, remaining term (Year)	9 years 10 months 24 days
Expected to vest, aggregate intrinsic value	$ 0
Exercisable, options (in shares)	9,672
Exercisable, weighted average exercise price (in dollars per share)	$ 85.5
Exercisable, remaining term (Year)	8 years 8 months 12 days
Exercisable, aggregate intrinsic value	$ 0

Note 7 - Stockholders' Equity - Schedule of Option under the Black-Scholes Model (Details) - Share-Based Payment Arrangement, Option [Member]	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Volatility	135.00%
Volatility, minimum		124.90%
Volatility, maximum		125.70%
Expected term (in years) (Year)	5 years 7 months 20 days
Risk-free rate	3.60%	4.10%
Expected dividend yield	0.00%	0.00%
Minimum [Member]
Expected term (in years) (Year)		5 years 9 months 18 days
Maximum [Member]
Expected term (in years) (Year)		5 years 10 months 24 days

Note 7 - Stockholders' Equity- Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Stock-based compensation	$ 331	$ 561	$ 714	$ 599
Research and Development Expense [Member]
Stock-based compensation	89	144	179	150
General and Administrative Expense [Member]
Stock-based compensation	$ 242	$ 417	$ 535	$ 449

Note 7 - Stockholders' Equity- Stock Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			12 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Warrants, outstanding (in shares)	1,476,200	745,139	524,601
Outstanding, weighted average exercise price (in dollars per share)	$ 8.64	$ 29.5	$ 32.42
Outstanding	$ 0	$ 0	$ 0	$ 0
Warrants, Granted (in shares)		1,420,741	441,076
Warrants granted, weighted average exercise price (in dollars per share)		$ 6.25	$ 6.2
Warrants, Exercised (in shares)		(689,680)	(220,538)
Exercised, weighted average exercise price (in dollars per share)		$ 6.2	$ 22.55
Warrants, outstanding (in shares)	1,476,200	1,476,200	745,139	524,601
Outstanding, weighted average exercise price (in dollars per share)	$ 8.64	$ 8.64	$ 29.5	$ 32.42

Note 8 - Common Stock Warrant Liabilities (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
	May 01, 2024	Jan. 05, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	May 31, 2024	Apr. 28, 2024	Mar. 31, 2024	Jan. 31, 2024	Dec. 31, 2023	Jan. 31, 2023
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)			$ 8.64		$ 8.64		$ 8.64			$ 29.5		$ 32.42
Fair Value Adjustment of Warrants			$ (18)	$ (2,572)	$ (157)	$ (1,544)
January 2024 Warrant Inducement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)									441,076		25,871
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)									$ 22.545		$ 22.545
January 2023 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)													25,871
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 22.545											$ 116.25
Warrants and Rights Outstanding		$ 300
Fair Value Adjustment of Warrants		$ 100
May 2024 Warrant Inducement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)								689,680
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)								$ 6.2	$ 6.2
Fair Value Adjustment of Warrants	$ 200
October 2022 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)									27,271
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)									$ 116.25
Warrants and Rights Outstanding	100
Fair Value Adjustment of Warrants	$ (100)

Note 8 - Common Stock Warrant Liabilities - Fair Value of Warrants Liabilities Measured Within Level 3 on Recurring Basis (Details) - Warrant [Member] - Fair Value, Inputs, Level 3 [Member] - Fair Value, Recurring [Member] - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024
Fair value of warrants outstanding	$ 47	$ 413	$ 586
Change in fair value of warrants	(18)	(255)	116
Exercise of warrants	0	(111)	(289)
Fair value of warrants outstanding	29	47	413
October 2022 Warrants [Member]
Fair value of warrants outstanding	47	413	426
Change in fair value of warrants	(18)	(255)	(13)
Exercise of warrants	0	(111)	0
Fair value of warrants outstanding	29	47	413
January 2023 Warrants [Member]
Fair value of warrants outstanding	0	0	160
Change in fair value of warrants	0	0	129
Exercise of warrants	0	0	(289)
Fair value of warrants outstanding	$ 0	$ 0	$ 0

Note 8 - Common Stock Warrant Liabilities - Schedule of Warrants under Monte Carlo Simulation and Black-Scholes Model (Details) - October 2022 Warrants [Member]	Sep. 30, 2024	Jan. 05, 2024	Dec. 31, 2023
Measurement Input, Share Price [Member]
Warrant Liability	2.49	4.76	12
Measurement Input, Risk Free Interest Rate [Member]
Warrant Liability	0.0358	0.05	0.0384
Measurement Input, Expected Dividend Rate [Member]
Warrant Liability	0	0	0
Measurement Input, Expected Term [Member]
Warrant Liability	3	3.4	3.8
Measurement Input, Price Volatility [Member]
Warrant Liability	1.64	1.60	1.48

Note 9 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended	9 Months Ended
	Nov. 13, 2024	Nov. 13, 2024	Sep. 30, 2024	Sep. 30, 2024	Sep. 30, 2023
Proceeds from Issuance of Common Stock				$ 862	$ 0
ATM Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)			160,934	245,617
Proceeds from Issuance of Common Stock			$ 600	$ 900
Subsequent Event [Member] \| ATM Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)		274,063
Proceeds from Issuance of Common Stock		$ 600
Subscription and Forgiveness Agreement with Fortress [Member] \| Subsequent Event [Member]
Debt Instrument, Forgiveness, Percent Converted to Stock	50.00%
Debt Instrument, Forgiveness, Amount Converted to Stock	$ 500
Debt Instrument, Forgiveness, Percent Forgiven	50.00%
Stock Issued During Period, Shares, New Issues (in shares)	122,850
Shares Issued, Price Per Share (in dollars per share)	$ 2.035	$ 2.035
Debt Instrument, Decrease, Forgiveness	$ 500