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STOCKHOLDERS' EQUITY
 3 Months Ended
Mar. 31, 2026
STOCKHOLDERS' EQUITY  
STOCKHOLDERS' EQUITY

6.

STOCKHOLDERS’ DEFICIT

The Company has shares reserved and available for future issuance of common stock as follows as of the periods indicated:

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March 31, 

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December 31, 

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  ​ ​ ​

2026

  ​ ​ ​

2025

Warrants

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4,313

​

4,313

Awards outstanding under the 2017 and 2007 Equity Incentive Plans

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213,890

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234,147

Awards outstanding under the 2024 Equity Incentive Plan

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27,385

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35,818

Shares available for future issuance under convertible debt notes

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1,780,837

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212,329

Shares available for future issuance under equity line-of-credit agreement

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159,115

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704

Shares available for future issuance under the 2024 Equity Incentive Plan

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48,746

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59,273

Shares available for future conversion of Series P Preferred Stock and warrants

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75,000

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—

Shares authorized and available for future issuance

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96,070,873

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2,159,267

Total shares reserved and available for future issuance of common stock

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98,380,159

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2,705,851

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Reverse Stock Split

On March 13, 2026, stockholders of the Company, holding shares of outstanding common stock of the Company, took action by written consent and without a meeting pursuant to Section 228 of the Delaware General Corporation Law and the Company’s Amended and Restated Certificate of Incorporation and Bylaws (the “Written Consent”). The Written Consent: (i) authorized the Company’s board of directors to effect a reverse split of the Company’s issued and outstanding Common Stock (the “Reverse Stock Split”) in a ratio of no less than 1-for-15 and no more than 1-for-25 (the “Range”); (ii) authorized the Board of Directors of the Company to determine whether or not to effect a reverse stock split and to determine the exact ratio of a reverse stock split within the Range, each as determined by the Board of Directors in its discretion at any time prior to March 23, 2027; and (iii) approved the form of amendment to the Amended and Restated Certificate of Incorporation effecting a reverse stock split and the subsequent filing thereof with the Secretary of State of the State of Delaware.

On April 16, 2026, the Company filed a Certificate of Amendment (the “Certificate of Amendment”) to the Company’s Amended and Restated Certificate of Incorporation, as amended, to effect a reverse stock split of its issued common stock, par value $0.00001 per share (“common stock”), in the ratio of 1-for-25 (the “Reverse Stock Split”), to be effective at 11:59 p.m., eastern time, on April 20, 2026. As of the effective time of the Reverse Stock Split, every 25 issued and outstanding shares of the Company’s common stock was automatically reclassified into one issued and outstanding share of the Company’s common stock, with any fractional shares being rounded up to the next whole share. Proportionate adjustments were made to the number of shares of common stock underlying the Company’s outstanding equity awards, warrants, the number of shares issuable under its equity incentive plans and other existing agreements, as well as the exercise or conversion price, as applicable.

All references to common stock, restricted stock units, warrants, preferred stock, and options to purchase common stock share data, per share data and related information contained in the unaudited condensed consolidated financial statements and the accompanying notes have been retroactively adjusted to reflect the effect of the Reverse Stock Split.