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Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands | Total | Convertible Preferred Stock | Common Stock | Additional Paid-In Capital | Accumulated Deficit | Accumulated Other Comprehensive Loss
--- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2022 | $ (71,304) |  | $ 1 | $ 40,402 | $ (111,707) |
Beginning Balance, Shares at Dec. 31, 2022 |  |  | 84,165 |  |  |
Temporary equity, Beginning balance at Dec. 31, 2022 |  | $ 62,071 |  |  |  |
Temporary equity, Beginning balance, Shares at Dec. 31, 2022 |  | 84,820,880 |  |  |  |
Stock-based compensation expense | 11,126 |  |  | 11,126 |  |
Conversion of preferred stock to common stock as a result of the Merger, shares |  |  | 2,442,852 |  |  |
Conversion of preferred stock to common stock as a result of the Merger, shares |  | (84,820,880) |  |  |  |
Conversion of preferred stock to common stock as a result of the Merger, value | 62,071 |  |  | 62,071 |  |
Conversion of preferred stock to common stock as a result of the Merger, value |  | $ (62,071) |  |  |  |
Issuance of common stock to Graybug stockholders as a result of Merger and reset to par of $0.0001, Shares |  |  | 1,571,433 |  |  |
Issuance of common stock to Graybug stockholders as a result of Merger and reset to par of $0.0001 | 29,218 |  |  | 29,218 |  |
Issuance of common shares from private placement (net of issuance costs), shares |  |  | 596,363 |  |  |
Issuance of common shares from private placement (net of issuance costs) | 10,340 |  |  | 10,340 |  |
Conversion of promissory notes into common stock, shares |  |  | 590,031 |  |  |
Conversion of promissory notes into common stock | 3,245 |  |  | 3,245 |  |
Conversion of Series C-2 Warrants into common stock, share |  |  | 80,254 |  |  |
Conversion of Series C-2 Warrants into common stock | 442 |  |  | 442 |  |
Conversion of promissory note warrants into common stock, shares |  |  | 152,875 |  |  |
Conversion of promissory note warrants into common stock | 841 |  |  | 841 |  |
Merger transaction costs | (4,591) |  |  | (4,591) |  |
Restricted stock units net settlement | (297) |  |  | (297) |  |
Reclassification of warrant liability to equity | 216 |  |  | 216 |  |
Net Income (loss) | (19,288) |  |  |  | (19,288) |
Temporary equity, Ending balance at Mar. 31, 2023 |  | $ 0 |  |  |  |
Temporary equity, Ending balance, Shares at Mar. 31, 2023 |  | 0 |  |  |  |
Ending Balance at Mar. 31, 2023 | 22,019 |  | $ 1 | 153,013 | (130,995) |
Ending Balance, Shares at Mar. 31, 2023 |  |  | 5,517,973 |  |  |
Beginning Balance at Dec. 31, 2023 | 8,157 |  | $ 1 | 154,218 | (146,064) | $ 2
Beginning Balance, Shares at Dec. 31, 2023 |  |  | 5,754,505 |  |  |
Stock-based compensation expense | 414 |  |  | 414 |  |
Issuance of common stock to Graybug stockholders as a result of Merger and reset to par of $0.0001 | 0 |  |  |  |  |
Issuance of common shares from private placement (net of issuance costs), shares |  |  | 4,985,610 |  |  |
Issuance of common shares from private placement (net of issuance costs) | 7,905 |  | $ 2 | 7,903 |  |
Issuance of warrants in connection with the private placement | 660 |  |  | 660 |  |
Unrealized loss on investments | (19) |  |  |  |  | (19)
Net Income (loss) | 130 |  |  |  | 130 |
Ending Balance at Mar. 31, 2024 | $ 17,247 |  | $ 3 | $ 163,195 | $ (145,934) | $ (17)
Ending Balance, Shares at Mar. 31, 2024 |  |  | 10,740,115 |  |  |

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- Definition Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481687/323-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-28 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.27(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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- Definition The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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