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Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock [Member] | Additional Paid-In Capital [Member] | Accumulated Other Comprehensive Loss [Member] | Accumulated Deficit [Member]
--- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2023 | $ 194,521 | $ 12 | $ 3,035,539 | $ (3,542) | $ (2,837,488)
Beginning balance, Shares at Dec. 31, 2023 |  | 119,556 |  |  |
Proceeds from settlement of capped call | 98,763 |  | 98,763 |  |
Issuance of common stock upon exercise of stock options | 9,477 |  | 9,477 |  |
Issuance of common stock upon exercise of stock options, shares |  | 714 |  |  |
Vesting of restricted stock units, net of shares withheld for taxes | (28) |  | (28) |  |
Vesting of restricted stock units, net of shares withheld for taxes. shares |  | 997 |  |  |
Share-based compensation expense | 30,349 |  | 30,349 |  |
Net loss | (66,423) |  |  |  | (66,423)
Foreign currency translation | 17 |  |  | 17 |
Ending balance at Mar. 31, 2024 | 266,676 | $ 12 | 3,174,100 | (3,525) | (2,903,911)
Ending balance, Shares at Mar. 31, 2024 |  | 121,267 |  |  |
Beginning balance at Dec. 31, 2023 | 194,521 | $ 12 | 3,035,539 | (3,542) | (2,837,488)
Beginning balance, Shares at Dec. 31, 2023 |  | 119,556 |  |  |
Proceeds from settlement of capped call | 98,763 |  |  |  |
Net loss | (161,525) |  |  |  |
Foreign currency translation | 402 |  |  |  |
Ending balance at Sep. 30, 2024 | 237,121 | $ 12 | 3,239,262 | (3,140) | (2,999,013)
Ending balance, Shares at Sep. 30, 2024 |  | 122,069 |  |  |
Beginning balance at Mar. 31, 2024 | 266,676 | $ 12 | 3,174,100 | (3,525) | (2,903,911)
Beginning balance, Shares at Mar. 31, 2024 |  | 121,267 |  |  |
Issuance of common stock upon exercise of stock options | 1,962 |  | 1,962 |  |
Issuance of common stock upon exercise of stock options, shares |  | 233 |  |  |
Vesting of restricted stock units, net of shares withheld for taxes. shares |  | 102 |  |  |
Share-based compensation expense | 29,990 |  | 29,990 |  |
Issuance of common stock under employee stock purchase plan | 3,193 |  | 3,193 |  |
Issuance of common stock under employee stock purchase plan, shares |  | 85 |  |  |
Net loss | (37,657) |  |  |  | (37,657)
Foreign currency translation | 163 |  |  | 163 |
Ending balance at Jun. 30, 2024 | 264,327 | $ 12 | 3,209,245 | (3,362) | (2,941,568)
Ending balance, Shares at Jun. 30, 2024 |  | 121,687 |  |  |
Issuance of common stock upon exercise of stock options | 2,556 |  | 2,556 |  |
Issuance of common stock upon exercise of stock options, shares |  | 112 |  |  |
Vesting of restricted stock units, net of shares withheld for taxes | (14) |  | (14) |  |
Vesting of restricted stock units, net of shares withheld for taxes. shares |  | 270 |  |  |
Share-based compensation expense | 27,475 |  | 27,475 |  |
Net loss | (57,445) |  |  |  | (57,445)
Foreign currency translation | 222 |  |  | 222 |
Ending balance at Sep. 30, 2024 | 237,121 | $ 12 | 3,239,262 | (3,140) | (2,999,013)
Ending balance, Shares at Sep. 30, 2024 |  | 122,069 |  |  |
Beginning balance at Dec. 31, 2024 | 228,539 | $ 12 | 3,267,201 | (3,308) | (3,035,366)
Beginning balance, Shares at Dec. 31, 2024 |  | 124,495 |  |  |
Issuance of common stock upon exercise of stock options | 281 |  | 281 |  |
Issuance of common stock upon exercise of stock options, shares |  | 15 |  |  |
Vesting of restricted stock units, net of shares withheld for taxes | (7) |  | (7) |  |
Vesting of restricted stock units, net of shares withheld for taxes. shares |  | 1,151 |  |  |
Share-based compensation expense | 27,374 |  | 27,374 |  |
Net loss | (92,225) |  |  |  | (92,225)
Foreign currency translation | 254 |  |  | 254 |
Ending balance at Mar. 31, 2025 | 164,216 | $ 12 | 3,294,849 | (3,054) | (3,127,591)
Ending balance, Shares at Mar. 31, 2025 |  | 125,661 |  |  |
Beginning balance at Dec. 31, 2024 | 228,539 | $ 12 | 3,267,201 | (3,308) | (3,035,366)
Beginning balance, Shares at Dec. 31, 2024 |  | 124,495 |  |  |
Unrealized gain on pension benefits | 137 |  |  |  |
Net loss | 81,339 |  |  |  |
Foreign currency translation | 771 |  |  |  |
Ending balance at Sep. 30, 2025 | 401,168 | $ 12 | 3,357,583 | (2,400) | (2,954,027)
Ending balance, Shares at Sep. 30, 2025 |  | 126,500 |  |  |
Beginning balance at Mar. 31, 2025 | 164,216 | $ 12 | 3,294,849 | (3,054) | (3,127,591)
Beginning balance, Shares at Mar. 31, 2025 |  | 125,661 |  |  |
Issuance of common stock upon exercise of stock options | 4,367 |  | 4,367 |  |
Issuance of common stock upon exercise of stock options, shares |  | 310 |  |  |
Vesting of restricted stock units, net of shares withheld for taxes. shares |  | 82 |  |  |
Share-based compensation expense | 27,197 |  | 27,197 |  |
Issuance of common stock under employee stock purchase plan | 2,191 |  | 2,191 |  |
Issuance of common stock under employee stock purchase plan, shares |  | 134 |  |  |
Net loss | (42,151) |  |  |  | (42,151)
Foreign currency translation | 485 |  |  | 485 |
Ending balance at Jun. 30, 2025 | 156,305 | $ 12 | 3,328,604 | (2,569) | (3,169,742)
Ending balance, Shares at Jun. 30, 2025 |  | 126,187 |  |  |
Issuance of common stock upon exercise of stock options | 797 |  | 797 |  |
Issuance of common stock upon exercise of stock options, shares |  | 103 |  |  |
Vesting of restricted stock units, net of shares withheld for taxes | (4) |  | (4) |  |
Vesting of restricted stock units, net of shares withheld for taxes. shares |  | 210 |  |  |
Share-based compensation expense | 28,186 |  | 28,186 |  |
Unrealized gain on pension benefits | 137 |  |  | 137 |
Net loss | 215,715 |  |  |  | 215,715
Foreign currency translation | 32 |  |  | 32 |
Ending balance at Sep. 30, 2025 | $ 401,168 | $ 12 | $ 3,357,583 | $ (2,400) | $ (2,954,027)
Ending balance, Shares at Sep. 30, 2025 |  | 126,500 |  |  |

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