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Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Warrants | Treasury Stock | Other Comprehensive Income (Loss) | Accumulated Deficit
--- | --- | --- | --- | --- | --- | --- | ---
Common stock, beginning balance (in shares) at Dec. 31, 2023 |  | 293,594,209 |  |  |  |  |
Beginning balance at Dec. 31, 2023 | $ 160,174 | $ 2,918 | $ 2,836,018 | $ 71 |  | $ 5,241 | $ (2,684,074)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Stock options exercised, net (in shares) |  | 444,497 |  |  |  |  |
Stock options exercised, net | 3,454 | $ 4 | 3,450 |  |  |  |
Vesting of restricted stock units, net of taxes (in shares) |  | 2,120,711 |  |  |  |  |
Vesting of restricted stock units, net of taxes | (16,721) |  | (16,721) |  |  |  |
Stock-based compensation | 30,803 |  | 30,803 |  |  |  |
Unrealized gain (loss) on available-for-sale securities | (15) |  |  |  |  | (15) |
Foreign currency translation adjustment | 1,418 |  |  |  |  | 1,418 |
Net loss | (48,419) |  |  |  |  |  | (48,419)
Common stock, ending balance (in shares) at Mar. 31, 2024 |  | 296,159,417 |  |  |  |  |
Ending balance at Mar. 31, 2024 | $ 130,694 | $ 2,922 | 2,853,550 | 71 |  | 6,644 | (2,732,493)
Common stock, beginning balance (in shares) at Dec. 31, 2024 | 299,041,653 | 299,041,653 |  |  |  |  |
Beginning balance at Dec. 31, 2024 | $ 194,045 | $ 2,944 | 2,926,115 | 71 | $ 0 | 5,095 | (2,740,180)
Treasury stock at beginning of period (in shares) at Dec. 31, 2024 |  |  |  |  | 0 |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Stock options exercised, net (in shares) | 12,000 | 11,944 |  |  |  |  |
Stock options exercised, net | $ 106 | $ 1 | 105 |  |  |  |
Vesting of restricted stock units, net of taxes (in shares) |  | 1,747,257 |  |  |  |  |
Vesting of restricted stock units, net of taxes | (11,790) |  | (11,790) |  |  |  |
Stock-based compensation | 25,172 |  | 25,172 |  |  |  |
Warrants exercised (in shares) |  | 7,129,605 |  |  |  |  |
Warrants exercised | 0 | $ 71 |  | (71) |  |  |
Treasury stock (in shares) |  | (7,390) |  |  | (7,390) |  |
Treasury stock | 0 |  | 71 |  | $ (71) |  |
Unrealized gain (loss) on available-for-sale securities | 72 |  |  |  |  | 72 |
Foreign currency translation adjustment | 7,639 |  |  |  |  | 7,639 |
Net loss | $ (21,686) |  |  |  |  |  | (21,686)
Common stock, ending balance (in shares) at Mar. 31, 2025 | 307,923,069 | 307,923,069 |  |  |  |  |
Ending balance at Mar. 31, 2025 | $ 193,558 | $ 3,016 | $ 2,939,673 | $ 0 | $ (71) | $ 12,806 | $ (2,761,866)
Treasury stock at end of period (in shares) at Mar. 31, 2025 | 7,390 |  |  |  | 7,390 |  |

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