| Changes in Stockholders' Equity |
Three and Six Months Ended June 30, 2025 and 2024 (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Accumulated | | | | | | | | | | | | | | Additional | | Other | | | | | Total | | | Common Stock | | | Paid-In | | Comprehensive | | Accumulated | | Stockholders’ | | | Shares | | Amount | | | Capital | | Income (loss) | | Deficit | | Equity | Balance, March 31, 2025 | | 286,975 | | $ | 29 | | $ | 719,315 | | $ | (88) | | $ | (512,128) | | $ | 207,128 | Issuance of common stock upon exercise of stock options | | 1,297 | | | — | | | 1,116 | | | — | | | — | | | 1,116 | Issuance of common stock upon exercise of common stock warrants | | 10 | | | — | | | 67 | | | — | | | — | | | 67 | Issuance of common stock upon release of restricted stock units ("RSUs") | | 2,150 | | | — | | | — | | | — | | | — | | | — | Proceeds from sale of common stock from Quanta private placement transaction | | 3,020 | | | — | | | 35,000 | | | — | | | — | | | 35,000 | Proceeds from sale of common stock through At-The-Market ("ATM") Offering | | 30,310 | | | 3 | | | 346,716 | | | — | | | — | | | 346,719 | Capitalization of offering costs to equity upon share issuance | | — | | | — | | | (888) | | | — | | | — | | | (888) | Stock-based compensation | | — | | | — | | | 3,554 | | | — | | | — | | | 3,554 | Foreign currency translation gain | | — | | | — | | | — | | | 156 | | | — | | | 156 | Change in unrealized gain on available-for-sale securities | | — | | | — | | | — | | | 65 | | | — | | | 65 | Net loss | | — | | | — | | | — | | | — | | | (39,654) | | | (39,654) | Balance, June 30, 2025 | | 323,762 | | $ | 32 | | $ | 1,104,880 | | $ | 133 | | $ | (551,782) | | $ | 553,263 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Accumulated | | | | | | | | | | | | | | Additional | | Other | | | | | Total | | | Common Stock | | Paid-In | | Comprehensive | | Accumulated | | Stockholders’ | | | Shares | | Amount | | Capital | | Income | | Deficit | | Equity | Balance, December 31, 2024 | | 283,547 | | $ | 29 | | $ | 681,202 | | $ | 105 | | $ | (554,747) | | $ | 126,589 | Issuance of common stock upon exercise of stock options | | 1,595 | | | — | | | 1,443 | | | — | | | — | | | 1,443 | Issuance of common stock upon exercise of common stock warrants | | 56 | | | — | | | 733 | | | — | | | — | | | 733 | Issuance of common stock upon release of RSUs | | 5,234 | | | — | | | — | | | — | | | — | | | — | Proceeds from sale of common stock from Quanta private placement transaction | | 3,020 | | | — | | | 35,000 | | | — | | | — | | | 35,000 | Proceeds from sale of common stock through ATM Offering | | 30,310 | | | 3 | | | 346,716 | | | — | | | — | | | 346,719 | Vesting of Promote Sponsor Vesting Shares | | — | | | — | | | 32,946 | | | — | | | — | | | 32,946 | Capitalization of offering costs to equity upon share issuance | | — | | | — | | | (888) | | | — | | | — | | | (888) | Stock-based compensation | | — | | | — | | | 7,728 | | | — | | | — | | | 7,728 | Foreign currency translation loss | | — | | | — | | | — | | | (29) | | | — | | | (29) | Change in unrealized gain on available-for-sale securities | | — | | | — | | | — | | | 57 | | | — | | | 57 | Net income | | — | | | — | | | — | | | — | | | 2,965 | | | 2,965 | Balance, June 30, 2025 | | 323,762 | | $ | 32 | | $ | 1,104,880 | | $ | 133 | | $ | (551,782) | | $ | 553,263 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Accumulated | | | | | | | | | | | | | | Additional | | Other | | | | | Total | | | Common Stock | | Paid-In | | Comprehensive | | Accumulated | | Stockholders’ | | | Shares | | Amount | | Capital | | Income | | Deficit | | Equity | Balance, March 31, 2024 | | 165,311 | | $ | 16 | | $ | 489,955 | | $ | 138 | | $ | (374,532) | | $ | 115,577 | Issuance of common stock upon exercise of stock options | | 31 | | | — | | | 8 | | | — | | | — | | | 8 | Issuance of common stock upon release of RSUs | | 1,478 | | | — | | | — | | | — | | | — | | | — | Proceeds from sale of common stock through ATM Offering | | 12,777 | | | 1 | | | 15,801 | | | — | | | — | | | 15,802 | Capitalization of deferred offering costs to equity upon share issuance | | — | | | — | | | (80) | | | — | | | — | | | (80) | Stock-based compensation | | — | | | — | | | 3,287 | | | — | | | — | | | 3,287 | Foreign currency translation loss | | — | | | — | | | — | | | (17) | | | — | | | (17) | Change in unrealized loss on available-for-sale securities | | — | | | — | | | — | | | 2 | | | — | | | 2 | Net loss | | — | | | — | | | — | | | — | | | (12,421) | | | (12,421) | Balance, June 30, 2024 | | 179,597 | | $ | 17 | | $ | 508,971 | | $ | 123 | | $ | (386,953) | | $ | 122,158 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Accumulated | | | | | | | | | | | | | | Additional | | Other | | | | | Total | | | Common Stock | | Paid-In | | Comprehensive | | Accumulated | | Stockholders’ | | | Shares | | Amount | | Capital | | Income | | Deficit | | Equity | Balance, December 31, 2023 | | 147,066 | | $ | 14 | | $ | 463,089 | | $ | 244 | | $ | (353,759) | | $ | 109,588 | Issuance of common stock upon exercise of stock options | | 250 | | | — | | | 68 | | | — | | | — | | | 68 | Issuance of common stock upon release of RSUs | | 2,801 | | | — | | | — | | | — | | | — | | | — | Proceeds from sale of common stock through Purchase Agreement - B. Riley | | 10,057 | | | 1 | | | 12,837 | | | — | | | — | | | 12,838 | Proceeds from sale of common stock through ATM Offering | | 19,423 | | | 2 | | | 26,831 | | | — | | | — | | | 26,833 | Capitalization of deferred offering costs to equity upon share issuance | | — | | | — | | | (132) | | | — | | | — | | | (132) | Stock-based compensation | | — | | | — | | | 6,278 | | | — | | | — | | | 6,278 | Foreign currency translation loss | | — | | | — | | | — | | | (105) | | | — | | | (105) | Change in unrealized loss on available-for-sale securities | | — | | | — | | | — | | | (16) | | | — | | | (16) | Net loss | | — | | | — | | | — | | | — | | | (33,194) | | | (33,194) | Balance, June 30, 2024 | | 179,597 | | $ | 17 | | $ | 508,971 | | $ | 123 | | $ | (386,953) | | $ | 122,158 |
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