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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | Voting Common Stock | Non-voting Common Stock | Common Stock Voting Common Stock | Common Stock Non-voting Common Stock | Additional Paid-In Capital | Accumulated Other Comprehensive Loss | Accumulated Deficit
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balances at Dec. 31, 2022 | $ 99,434 |  |  | $ 2 | $ 1 | $ 257,810 |  | $ (158,379)
Balances, shares at Dec. 31, 2022 |  |  |  | 19,082,820 | 5,143,134 |  |  |
Exercise of stock options | 711 |  |  |  |  | 711 |  |
Exercise of stock options, shares |  |  |  | 316,441 |  |  |  |
Issuance of common stock, net of offering costs | 42,414 |  |  | $ 2 |  | 42,412 |  |
Issuance of common stock, net of offering costs, shares |  |  |  | 23,287,134 |  |  |  |
Issuance of pre-funded warrants, net of offering costs | 92,318 |  |  |  |  | 92,318 |  |
Conversion of non-voting common stock to voting common stock, shares |  |  |  | 866,546 | (866,546) |  |  |
Stock-based compensation expense | 5,208 |  |  |  |  | 5,208 |  |
Net loss | (89,218) |  |  |  |  |  |  | (89,218)
Balances at Dec. 31, 2023 | 150,867 |  |  | $ 4 | $ 1 | 398,459 |  | (247,597)
Balances, shares at Dec. 31, 2023 |  | 43,552,941 | 4,276,588 | 43,552,941 | 4,276,588 |  |  |
Exercise of stock options | 1,717 |  |  |  |  | 1,717 |  |
Exercise of stock options, shares |  |  |  | 586,081 |  |  |  |
Issuance of common stock under employee stock purchase plan | 333 |  |  |  |  | 333 |  |
Issuance of common stock under employee stock purchase plan, shares |  |  |  | 82,153 |  |  |  |
Issuance of common stock, net of offering costs | 33,131 |  |  | $ 1 |  | 33,130 |  |
Issuance of common stock, net of offering costs, shares |  |  |  | 4,958,068 |  |  |  |
Issuance of pre-funded warrants, net of offering costs | 158,071 |  |  |  |  | 158,071 |  |
Conversion of convertible debt | 14,750 |  |  |  |  | 14,750 |  |
Conversion of convertible debt, shares |  |  |  | 3,134,796 |  |  |  |
Stock-based compensation expense | 9,549 |  |  |  |  | 9,549 |  |
Net loss | (127,499) |  |  |  |  |  |  | (127,499)
Unrealized gain on available-for-sale securities | 51 |  |  |  |  |  | $ 51 |
Balances at Dec. 31, 2024 | $ 240,970 |  |  | $ 5 | $ 1 | $ 616,009 | $ 51 | $ (375,096)
Balances, shares at Dec. 31, 2024 |  | 52,314,039 | 4,276,588 | 52,314,039 | 4,276,588 |  |  |

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