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Consolidated Statements of Convertible Preferred Stock and Stockholders' Deficit - USD ($) $ in Thousands | Total | Series Seed Convertible Preferred Stock [Member] | Series A Convertible Preferred Stock [Member] | Series B-1 Convertible Preferred Stock [Member] | Series B-2 Convertible Preferred Stock [Member] | Common Stock [Member] | Additional Paid-In Capital [Member] | Accumulated Other Comprehensive Loss [Member] | Accumulated Deficit [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Temporary equity, beginning balance (in share) at Dec. 31, 2021 |  | 684,739 | 2,029,666 | 1,104,178 | 223,417 |  |  |  |
Temporary equity, beginning balance at Dec. 31, 2021 |  | $ 15,924 | $ 77,736 | $ 57,703 | $ 12,500 |  |  |  |
Beginning balance (in share) at Dec. 31, 2021 |  |  |  |  |  | 237,803 |  |  |
Beginning balance at Dec. 31, 2021 | $ (42,208) |  |  |  |  |  | $ 1,600 | $ (7) | $ (43,801)
Issuance of common stock for services rendered (in share) |  |  |  |  |  | 497 |  |  |
Issuance of common stock for services rendered | 11 |  |  |  |  |  | 11 |  |
Exercises of stock options (in shares) |  |  |  |  |  | 8,722 |  |  |
Exercises of stock options | 62 |  |  |  |  |  | 62 |  |
Vesting of restricted common stock (in share) |  |  |  |  |  | 21,377 |  |  |
Vesting of restricted common stock | 5 |  |  |  |  |  | 5 |  |
Stock-based compensation expense | 1,129 |  |  |  |  |  | 1,129 |  |
Other comprehensive income | 2 |  |  |  |  |  |  | 2 |
Net loss | $ (58,032) |  |  |  |  |  |  |  | (58,032)
Ending balance (in share) at Dec. 31, 2022 | 268,468 |  |  |  |  | 268,399 |  |  |
Ending balance at Dec. 31, 2022 | $ (99,031) |  |  |  |  |  | 2,807 | (5) | (101,833)
Temporary equity, beginning balance (in share) at Dec. 31, 2022 |  | 684,739 | 2,029,666 | 1,104,178 | 223,417 |  |  |  |
Temporary equity, ending balance at Dec. 31, 2022 |  | $ 15,924 | $ 77,736 | $ 57,703 | $ 12,500 |  |  |  |
Issuance of common stock for services rendered (in share) |  |  |  |  |  | 292 |  |  |
Issuance of common stock for services rendered | $ 6 |  |  |  |  |  | 6 |  |
Exercises of stock options (in shares) | 39,395 |  |  |  |  | 73,394 |  |  |
Exercises of stock options | $ 702 |  |  |  |  |  | 702 |  |
Vesting of restricted common stock (in share) |  |  |  |  |  | 2,902 |  |  |
Stock-based compensation expense | 2,375 |  |  |  |  |  | 2,375 |  |
Issuance of Series B-2 convertible preferred stock, net of issuance costs (in share) |  |  |  |  | 813,239 |  |  |  |
Issuance of Series B-2 convertible preferred stock, net of issuance costs |  |  |  |  | $ 45,458 |  |  |  |
Issuance of common stock for cash in PIPE financing (in share) |  |  |  |  |  | 2,077,864 |  |  |
Issuance of common stock for cash in PIPE financing | 117,252 |  |  |  |  | $ 2 | 117,250 |  |
Conversion of preferred stock to common stock (in share) |  | (684,739) | (2,029,666) | (1,104,178) | (1,036,656) | 4,855,208 |  |  |
Conversion of preferred stock to common stock | 209,320 | $ (15,924) | $ (77,736) | $ (57,703) | $ (57,958) | $ 5 | 209,315 |  |
Issuance of common stock to Frequency shareholders in reverse recapitalization (in share) |  |  |  |  |  | 738,457 |  |  |
Issuance of common stock to Frequency shareholders in reverse recapitalization | 32,701 |  |  |  |  | $ 1 | 32,700 |  |
Reverse recapitalization transaction costs | (12,247) |  |  |  |  |  | (12,247) |  |
Other comprehensive income | 5 |  |  |  |  |  |  | $ 5 |
Net loss | $ (81,172) |  |  |  |  |  |  |  | (81,172)
Ending balance (in share) at Dec. 31, 2023 | 8,016,516 |  |  |  |  | 8,016,516 |  |  |
Ending balance at Dec. 31, 2023 | $ 169,911 |  |  |  |  | $ 8 | $ 352,908 |  | $ (183,005)
Temporary equity, beginning balance (in share) at Dec. 31, 2023 |  | 0 | 0 | 0 | 0 |  |  |  |
Temporary equity, ending balance at Dec. 31, 2023 |  | $ 0 | $ 0 | $ 0 | $ 0 |  |  |  |

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