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Condensed Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Loss | Accumulated Deficit | Preferred Stock [Member] Convertible Preferred Stock [Member]
--- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2023 | $ 122,886 | $ 3 | $ 1,084,562 | $ 68 | $ (961,747) | $ 0
Beginning Balance (shares) at Dec. 31, 2023 |  | 3,354,000 |  |  |  | 0
Issuance of common stock through employee stock purchase plan | 2,080 | $ 1 | 2,079 |  |  |
Issuance of common stock through employee stock purchase plan (shares) |  | 52,000 |  |  |  |
Issuance of common stock for settlement of RSUs | 295 |  | 295 |  |  |
Issuance of common stock for settlement of RSUs (shares) |  | 40,000 |  |  |  |
Stock option exercises | 6 |  | 6 |  |  |
Stock-based compensation expense | 8,203 |  | 8,203 |  |  |
Unrealized gain on available-for-sale securities | (326) |  |  | (326) |  |
Net Income (Loss) | (39,944) |  |  |  | (39,944) |
Ending Balance at Mar. 31, 2024 | 93,200 | $ 4 | 1,095,145 | (258) | (1,001,691) | $ 0
Ending Balance (shares) at Mar. 31, 2024 |  | 3,446,000 |  |  |  | 0
Beginning Balance at Dec. 31, 2023 | 122,886 | $ 3 | 1,084,562 | 68 | (961,747) | $ 0
Beginning Balance (shares) at Dec. 31, 2023 |  | 3,354,000 |  |  |  | 0
Unrealized gain on available-for-sale securities | 284 |  |  |  |  |
Net Income (Loss) | (102,338) |  |  |  |  |
Ending Balance at Sep. 30, 2024 | 47,822 | $ 4 | 1,111,551 | 352 | (1,064,085) | $ 0
Ending Balance (shares) at Sep. 30, 2024 |  | 3,503,000 |  |  |  | 0
Beginning Balance at Mar. 31, 2024 | 93,200 | $ 4 | 1,095,145 | (258) | (1,001,691) | $ 0
Beginning Balance (shares) at Mar. 31, 2024 |  | 3,446,000 |  |  |  | 0
Issuance of common stock for settlement of RSUs (shares) |  | 21,000 |  |  |  |
Stock option exercises | 77 |  | 77 |  |  |
Stock option exercises (shares) |  | 5,000 |  |  |  |
Stock-based compensation expense | 9,820 |  | 9,820 |  |  |
Unrealized gain on available-for-sale securities | (44) |  |  | (44) |  |
Net Income (Loss) | (34,454) |  |  |  | (34,454) |
Ending Balance at Jun. 30, 2024 | 68,599 | $ 4 | 1,105,042 | (302) | (1,036,145) | $ 0
Ending Balance (shares) at Jun. 30, 2024 |  | 3,472,000 |  |  |  | 0
Issuance of common stock through employee stock purchase plan | 121 |  | 121 |  |  |
Issuance of common stock through employee stock purchase plan (shares) |  | 18,000 |  |  |  |
Issuance of common stock for settlement of RSUs (shares) |  | 13,000 |  |  |  |
Stock-based compensation expense | 6,388 |  | 6,388 |  |  |
Unrealized gain on available-for-sale securities | 654 |  |  | 654 |  |
Net Income (Loss) | (27,940) |  |  |  | (27,940) |
Ending Balance at Sep. 30, 2024 | 47,822 | $ 4 | 1,111,551 | 352 | (1,064,085) | $ 0
Ending Balance (shares) at Sep. 30, 2024 |  | 3,503,000 |  |  |  | 0
Beginning Balance at Dec. 31, 2024 | 26,819 | $ 4 | 1,116,496 | 42 | (1,089,723) | $ 0
Beginning Balance (shares) at Dec. 31, 2024 |  | 3,530,000 |  |  |  | 0
Issuance of Series A convertible preferred stock, net of issuance costs (in shares) |  |  |  |  |  | 863,000
Issuance of Series A convertible preferred stock, net of issuance costs | 161,071 |  |  |  |  | $ 161,071
Conversion of Stock, Amount Issued |  | $ 14 | 157,216 |  |  | $ (157,230)
Conversion of Stock, Shares Converted |  | 14,046,000 |  |  |  | (842,000)
Issuance of common stock through employee stock purchase plan | 408 |  | 408 |  |  |
Issuance of common stock through employee stock purchase plan (shares) |  | 60,000 |  |  |  |
Issuance of common stock for settlement of RSUs (shares) |  | 86,000 |  |  |  |
Stock-based compensation expense | 2,977 |  | 2,977 |  |  |
Unrealized gain on available-for-sale securities | 46 |  |  | 46 |  |
Issuance of common stock warrant, net of issuance costs | 4,330 |  | 4,330 |  |  |
Net Income (Loss) | (25,783) |  | 0 |  | (25,783) |
Ending Balance at Mar. 31, 2025 | 169,868 | $ 18 | 1,281,427 | 88 | (1,115,506) | $ 3,841
Ending Balance (shares) at Mar. 31, 2025 |  | 17,722,000 |  |  |  | 21,000
Beginning Balance at Dec. 31, 2024 | 26,819 | $ 4 | 1,116,496 | 42 | (1,089,723) | $ 0
Beginning Balance (shares) at Dec. 31, 2024 |  | 3,530,000 |  |  |  | 0
Conversion of Stock, Shares Converted |  | 14,046,000 |  |  |  |
Unrealized gain on available-for-sale securities | 115 |  |  |  |  |
Net Income (Loss) | (62,162) |  |  |  |  |
Ending Balance at Sep. 30, 2025 | 142,365 | $ 18 | 1,290,234 | 157 | (1,151,885) | $ 3,841
Ending Balance (shares) at Sep. 30, 2025 |  | 17,809,000 |  |  |  | 21,000
Beginning Balance at Mar. 31, 2025 | 169,868 | $ 18 | 1,281,427 | 88 | (1,115,506) | $ 3,841
Beginning Balance (shares) at Mar. 31, 2025 |  | 17,722,000 |  |  |  | 21,000
Issuance of common stock for settlement of RSUs (shares) |  | 44,000 |  |  |  |
Stock-based compensation expense | 3,496 |  | 3,496 |  |  |
Unrealized gain on available-for-sale securities | (39) |  |  | (39) |  |
Net Income (Loss) | (18,541) |  |  |  | (18,541) |
Ending Balance at Jun. 30, 2025 | 154,784 | $ 18 | 1,284,923 | 49 | (1,134,047) | $ 3,841
Ending Balance (shares) at Jun. 30, 2025 |  | 17,766,000 |  |  |  | 21,000
Issuance of common stock through employee stock purchase plan | 231 |  | 231 |  |  |
Issuance of common stock through employee stock purchase plan (shares) |  | 27,000 |  |  |  |
Issuance of common stock for settlement of RSUs (shares) |  | 16,000 |  |  |  |
Stock-based compensation expense | 5,080 |  | 5,080 |  |  |
Unrealized gain on available-for-sale securities | 108 |  |  | 108 |  |
Net Income (Loss) | (17,838) |  |  |  | (17,838) |
Ending Balance at Sep. 30, 2025 | $ 142,365 | $ 18 | $ 1,290,234 | $ 157 | $ (1,151,885) | $ 3,841
Ending Balance (shares) at Sep. 30, 2025 |  | 17,809,000 |  |  |  | 21,000

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