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Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-In Capital [Member] | Accumulated Deficit [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Treasury Stock [Member]
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2022 | $ 145,322 | $ 1 | $ 445,267 | $ (292,049) | $ (1,102) | $ (6,795)
Balance (in shares) at Dec. 31, 2022 |  | 78,257,258 |  |  |  |
Employee stock-based compensation, net | 12,670 |  | 12,670 |  |  |
Shares withheld related to employee tax withholding | (7,121) |  | (7,121) |  |  |
Shares withheld related to employee tax withholding (in shares) |  | (509,686) |  |  |  |
Issuance of common stock under employee stock plans | 6,580 |  | 6,580 |  |  |
Issuance of common stock under employee stock plans (in shares) |  | 2,274,752 |  |  |  |
Sale of common stock, net of issuance costs | 271,882 |  | 271,882 |  |  |
Sale of common stock, net of issuance costs (in shares) |  | 20,006,504 |  |  |  |
Unrealized gain on investments | 305 |  |  |  | 305 |
Unrealized currency translation gain (loss) | (108) |  |  |  | (108) |
Net Income (Loss) | (61,290) |  |  | (61,290) |  |
Balance at Sep. 30, 2023 | 368,240 | $ 1 | 729,278 | (353,339) | (905) | (6,795)
Balance (in shares) at Sep. 30, 2023 |  | 100,028,828 |  |  |  |
Balance at Jun. 30, 2023 | 386,115 | $ 1 | 724,754 | (330,805) | (1,040) | (6,795)
Balance (in shares) at Jun. 30, 2023 |  | 100,028,828 |  |  |  |
Employee stock-based compensation, net | 4,481 |  | 4,481 |  |  |
Sale of common stock, net of issuance costs | 43 |  | 43 |  |  |
Unrealized gain on investments | 221 |  |  |  | 221 |
Unrealized currency translation gain (loss) | (86) |  |  |  | (86) |
Net Income (Loss) | (22,534) |  |  | (22,534) |  |
Balance at Sep. 30, 2023 | 368,240 | $ 1 | 729,278 | (353,339) | (905) | (6,795)
Balance (in shares) at Sep. 30, 2023 |  | 100,028,828 |  |  |  |
Balance at Dec. 31, 2023 | 348,419 | $ 1 | 733,546 | (377,944) | (389) | (6,795)
Balance (in shares) at Dec. 31, 2023 |  | 100,113,770 |  |  |  |
Employee stock-based compensation, net | 24,045 |  | 24,045 |  |  |
Shares withheld related to employee tax withholding | (42,101) |  | (42,101) |  |  |
Shares withheld related to employee tax withholding (in shares) |  | (541,876) |  |  |  |
Issuance of common stock under employee stock plans | 9,813 |  | 9,813 |  |  |
Issuance of common stock under employee stock plans (in shares) |  | 2,994,974 |  |  |  |
Sale of common stock, net of issuance costs | 643,797 |  | 637,002 |  |  | $ 6,795
Sale of common stock, net of issuance costs (in shares) |  | 8,867,953 |  |  |  |
Unrealized gain on investments | 2,079 |  |  |  | 2,079 |
Unrealized currency translation gain (loss) | (58) |  |  |  | (58) |
Net Income (Loss) | (74,546) |  |  | (74,546) |  |
Balance at Sep. 30, 2024 | 911,448 | $ 1 | 1,362,305 | (452,490) | 1,632 |
Balance (in shares) at Sep. 30, 2024 |  | 111,434,821 |  |  |  |
Balance at Jun. 30, 2024 | 920,980 | $ 1 | 1,350,801 | (427,550) | (2,272) |
Balance (in shares) at Jun. 30, 2024 |  | 110,796,200 |  |  |  |
Employee stock-based compensation, net | 8,982 |  | 8,982 |  |  |
Shares withheld related to employee tax withholding (in shares) |  | 291,835 |  |  |  |
Issuance of common stock under employee stock plans | 2,522 |  | 2,522 |  |  |
Issuance of common stock under employee stock plans (in shares) |  | 346,786 |  |  |  |
Unrealized gain on investments | 3,902 |  |  |  | 3,902 |
Unrealized currency translation gain (loss) | 2 |  |  |  | 2 |
Net Income (Loss) | (24,940) |  |  | (24,940) |  |
Balance at Sep. 30, 2024 | $ 911,448 | $ 1 | $ 1,362,305 | $ (452,490) | $ 1,632 |
Balance (in shares) at Sep. 30, 2024 |  | 111,434,821 |  |  |  |

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