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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Accumulated Deficit
--- | --- | --- | --- | --- | ---
Balances, at Beginning of period at Dec. 31, 2023 | $ 253,895 | $ 4 | $ 559,176 | $ 347 | $ (305,632)
Balances, at Beginning of period (in shares) at Dec. 31, 2023 |  | 54,992,784 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Stock-based compensation expense, including employee stock purchase plan expense | 15,818 |  | 15,818 |  |
Issuance of shares under at-the-market offering, net of issuance costs | 22,787 |  | 22,787 |  |
Issuance of shares under at-the-market offering |  | 1,772,278 |  |  |
Issuance of shares under employee stock purchase plan | 650 |  | 650 |  |
Issuance of shares under employee stock purchase plan (in shares) |  | 70,701 |  |  |
Employee stock purchase plan expense | 441 |  | 441 |  |
Exercise of stock options | 1,110 |  | 1,110 |  |
Exercise of stock options (in shares) |  | 359,897 |  |  |
Vesting of restricted stock awards (in shares) |  | 92,659 |  |  |
Net unrealized (loss) gain on marketable securities | 117 |  |  | 117 |
Net loss | (95,907) |  |  |  | (95,907)
Balances, at End of period at Sep. 30, 2024 | 198,911 | $ 4 | 599,982 | 464 | (401,539)
Balances, at End of period (in shares) at Sep. 30, 2024 |  | 57,288,319 |  |  |
Balances, at Beginning of period at Dec. 31, 2023 | 253,895 | $ 4 | 559,176 | 347 | (305,632)
Balances, at Beginning of period (in shares) at Dec. 31, 2023 |  | 54,992,784 |  |  |
Balances, at End of period at Dec. 31, 2024 | 408,964 | $ 7 | 843,920 | 143 | (435,106)
Balances, at End of period (in shares) at Dec. 31, 2024 |  | 74,312,608 |  |  |
Balances, at Beginning of period at Jun. 30, 2024 | 227,163 | $ 4 | 594,261 | (118) | (366,984)
Balances, at Beginning of period (in shares) at Jun. 30, 2024 |  | 57,246,411 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Stock-based compensation expense, including employee stock purchase plan expense | 5,572 |  | 5,572 |  |
Employee stock purchase plan expense | 54 |  | 54 |  |
Exercise of stock options | 95 |  | 95 |  |
Exercise of stock options (in shares) |  | 41,908 |  |  |
Net unrealized (loss) gain on marketable securities | 582 |  |  | 582 |
Net loss | (34,555) |  |  |  | (34,555)
Balances, at End of period at Sep. 30, 2024 | 198,911 | $ 4 | 599,982 | 464 | (401,539)
Balances, at End of period (in shares) at Sep. 30, 2024 |  | 57,288,319 |  |  |
Balances, at Beginning of period at Dec. 31, 2024 | 408,964 | $ 7 | 843,920 | 143 | (435,106)
Balances, at Beginning of period (in shares) at Dec. 31, 2024 |  | 74,312,608 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Stock-based compensation expense, including employee stock purchase plan expense | 13,320 |  | 13,320 |  |
Issuance of shares under employee stock purchase plan | 748 |  | 748 |  |
Issuance of shares under employee stock purchase plan (in shares) |  | 206,609 |  |  |
Exercise of stock options | $ 477 |  | 477 |  |
Exercise of stock options (in shares) | 234,094 | 203,513 |  |  |
Issuance cost associated with private equity placement | $ (14) |  | (14) |  |
Exchange of common stock shares for pre-funded warrants (in shares) |  | (6,070,000) |  |  |
Net unrealized (loss) gain on marketable securities | 383 |  |  | 383 |
Net loss | (116,390) |  |  |  | (116,390)
Balances, at End of period at Sep. 30, 2025 | 307,488 | $ 7 | 858,451 | 526 | (551,496)
Balances, at End of period (in shares) at Sep. 30, 2025 |  | 68,652,730 |  |  |
Balances, at Beginning of period at Jun. 30, 2025 | 345,236 | $ 7 | 854,194 | 314 | (509,279)
Balances, at Beginning of period (in shares) at Jun. 30, 2025 |  | 68,627,886 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Stock-based compensation expense, including employee stock purchase plan expense | 4,250 |  | 4,250 |  |
Exercise of stock options | 7 |  | 7 |  |
Exercise of stock options (in shares) |  | 24,844 |  |  |
Net unrealized (loss) gain on marketable securities | 212 |  |  | 212 |
Net loss | (42,217) |  |  |  | (42,217)
Balances, at End of period at Sep. 30, 2025 | $ 307,488 | $ 7 | $ 858,451 | $ 526 | $ (551,496)
Balances, at End of period (in shares) at Sep. 30, 2025 |  | 68,652,730 |  |  |

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