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Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) - USD ($) | Total | Convertible Preferred Stock | Common Stock | Additional Paid-In Capital | Accumulated Deficit | Accumulated Other Comprehensive Income (Loss)
--- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2021 | [1] | $ (63,987,000) |  |  | $ 1,000 |  | $ 39,895,000 |  | $ (103,883,000) |  |
Beginning Balance, Shares at Dec. 31, 2021 | [1] |  |  |  | 78,527 |  |  |  |  |  |
Temporary equity, Beginning balance at Dec. 31, 2021 | [1] |  |  | $ 62,071,000 |  |  |  |  |  |  |
Temporary equity, Beginning balance, Shares at Dec. 31, 2021 | [1] |  |  | 84,820,880 |  |  |  |  |  |  |
Issuance of common stock for services, shares |  |  |  |  | 1,138 |  |  |  |  |  |
Issuance of common stock for services |  | 8,000 |  |  |  |  | 8,000 |  |  |  |
Exercise of common stock options |  | 18,000 |  |  |  |  | 18,000 |  |  |  |
Exercise of common stock options, Shares |  |  |  |  | 4,500 |  |  |  |  |  |
Stock-based compensation expense |  | 1,799,000 |  |  |  |  | 1,799,000 |  |  |  |
Deemed distribution |  | (1,318,000) |  |  |  |  | (1,318,000) |  |  |  |
Net loss | [1] | (7,824,000) |  |  |  |  |  |  | (7,824,000) |  |
Temporary equity, Ending balance at Dec. 31, 2022 | [2] |  |  | $ 62,071,000 |  |  |  |  |  |  |
Temporary equity, Ending balance, Shares at Dec. 31, 2022 | [2] |  |  | 84,820,880 |  |  |  |  |  |  |
Ending Balance at Dec. 31, 2022 |  | (71,304,000) | [3] |  | $ 1,000 | [2] | 40,402,000 | [2] | (111,707,000) | [2] |
Ending Balance, Shares at Dec. 31, 2022 | [2] |  |  |  | 84,165 |  |  |  |  |  |
Stock-based compensation expense |  | 12,039,000 |  |  |  |  | 12,039,000 |  |  |  |
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 |  | 62,071,000 |  |  |  |  | 62,071,000 |  |  |  |
Conversion of preferred stock to common stock as a result of the Merger, value |  |  |  | $ (62,071,000) |  |  |  |  |  |  |
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 |  | 29,218,000 |  |  |  |  | 29,218,000 |  |  |  |
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) |  | 10,340,000 |  |  |  |  | 10,340,000 |  |  |  |
Conversion of promissory notes into common stock, shares |  |  |  |  | 590,031 |  |  |  |  |  |
Conversion of promissory notes into common stock |  | 3,245,000 |  |  |  |  | 3,245,000 |  |  |  |
Conversion of Series C-2 warrants into common stock, share |  |  |  |  | 80,254 |  |  |  |  |  |
Conversion of Series C-2 warrants into common stock |  | 442,000 |  |  |  |  | 442,000 |  |  |  |
Conversion of promissory note warrants into common stock, shares |  |  |  |  | 152,875 |  |  |  |  |  |
Conversion of promissory note warrants into common stock |  | 841,000 |  |  |  |  | 841,000 |  |  |  |
Merger transaction costs |  | (4,545,000) |  |  |  |  | (4,545,000) |  |  |  |
Restricted stock units net settlement, shares |  |  |  |  | 143,960 |  |  |  |  |  |
Restricted stock units net settlement |  | (297,000) |  |  |  |  | (297,000) |  |  |  |
Reclassification of warrant liability to equity |  | 216,000 |  |  |  |  | 216,000 |  |  |  |
Issuance of common stock (net of issuance costs) |  | 246,000 |  |  |  |  | 246,000 |  |  |  |
Issuance of common stock (net of issuance costs), shares |  |  |  |  | 92,572 |  |  |  |  |  |
Unrealized gain on investments |  | 2,000 |  |  |  |  |  |  |  |  | $ 2,000
Net loss |  | (34,357,000) |  |  |  |  |  |  | (34,357,000) |  |
Ending Balance at Dec. 31, 2023 |  | $ 8,157,000 | [3] |  | $ 1,000 |  | $ 154,218,000 |  | $ (146,064,000) |  | $ 2,000
Ending Balance, Shares at Dec. 31, 2023 |  |  |  |  | 5,754,505 |  |  |  |  |  |
[1] | (1) Retroactively restated for the reverse recapitalization as described in Note 2.
[2] | (1) Retroactively restated for the reverse recapitalization as described in Note 2.
[3] | (1) Retroactively restated for the reverse recapitalization as described in Note 2.

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