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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands | Total | Common Stock | Common Stock Common Class A | Additional paid in capital | Accumulated deficit
--- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2021 |  |  | 81,211,781 |  |
Beginning balance at Dec. 31, 2021 | $ 131,888 |  | $ 1 | $ 340,570 | $ (208,683)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issuance of common stock upon exercise of stock options (in shares) |  |  | 170,751 |  |
Issuance of common stock upon exercise of stock options | 48 |  |  | 48 |
Issuance of common stock upon vesting of RSUs (in shares) |  |  | 113,710 |  |
Share repurchase related to Section 16 Officer tax coverage exchange (in shares) |  |  | (18,673) |  |
Share repurchase related to Section 16 Officer tax coverage exchange | (59) |  |  | (59) |
Stock-based compensation - stock options, RSAs, RSUs | 2,212 |  |  | 2,212 |
Share repurchase valuation adjustment | (6,000) |  |  | (6,000) |
Shares issued upon exercise of warrant (in shares) |  |  | 278,146 |  |
Net loss | (26,834) |  |  |  | (26,834)
Ending balance (in shares) at Mar. 31, 2022 |  |  | 81,755,715 |  |
Ending balance at Mar. 31, 2022 | 101,255 |  | $ 1 | 336,771 | (235,517)
Beginning balance (in shares) at Dec. 31, 2021 |  |  | 81,211,781 |  |
Beginning balance at Dec. 31, 2021 | 131,888 |  | $ 1 | 340,570 | (208,683)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net loss | (49,706) |  |  |  |
Ending balance (in shares) at Jun. 30, 2022 |  |  | 83,264,832 |  |
Ending balance at Jun. 30, 2022 | 82,205 |  | $ 1 | 340,593 | (258,389)
Beginning balance (in shares) at Mar. 31, 2022 |  |  | 81,755,715 |  |
Beginning balance at Mar. 31, 2022 | 101,255 |  | $ 1 | 336,771 | (235,517)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issuance of common stock upon exercise of stock options (in shares) |  |  | 1,294,668 |  |
Issuance of common stock upon exercise of stock options | 345 |  |  | 345 |
Issuance of common stock upon vesting of RSUs (in shares) |  |  | 149,953 |  |
Issuance of common stock upon purchase of ESPP (in shares) |  | 77,162 |  |  |
Issuance of common stock upon purchase of ESPP | 190 |  |  | 190 |
Share repurchase related to Section 16 Officer tax coverage exchange (in shares) |  |  | (12,666) |  |
Share repurchase related to Section 16 Officer tax coverage exchange | (38) |  |  | (38) |
Stock-based compensation - stock options, RSAs, RSUs | 3,105 |  |  | 3,105 |
Share repurchase valuation adjustment | 220 |  |  | 220 |
Net loss | (22,872) |  |  |  | (22,872)
Ending balance (in shares) at Jun. 30, 2022 |  |  | 83,264,832 |  |
Ending balance at Jun. 30, 2022 | $ 82,205 |  | $ 1 | 340,593 | (258,389)
Beginning balance (in shares) at Dec. 31, 2022 | 84,441,153 |  | 84,441,153 |  |
Beginning balance at Dec. 31, 2022 | $ 38,607 |  | $ 1 | 342,733 | (304,127)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issuance of common stock upon exercise of stock options (in shares) |  |  | 370,287 |  |
Issuance of common stock upon exercise of stock options | 92 |  |  | 92 |
Issuance of common stock upon vesting of RSUs (in shares) |  |  | 766,791 |  |
Share repurchase related to Section 16 Officer tax coverage exchange (in shares) |  |  | (124,899) |  |
Share repurchase related to Section 16 Officer tax coverage exchange | (60) |  |  | (60) |
Stock-based compensation - stock options, RSAs, RSUs | 1,720 |  |  | 1,720 |
Issuance of common stock and related warrants in registered offering, net of issuance costs (in shares) |  |  | 9,396,000 |  |
Issuance of common stock and related warrants in registered offering, net of issuance costs | 9,300 |  |  | 9,300 |
Issuance of common stock to non-employees (in shares) |  |  | 135,000 |  |
Issuance of common stock to non-employees | 112 |  |  | 112 |
Net loss | (20,825) |  |  |  | (20,825)
Ending balance (in shares) at Mar. 31, 2023 |  |  | 94,984,332 |  |
Ending balance at Mar. 31, 2023 | $ 28,946 |  | $ 1 | 353,897 | (324,952)
Beginning balance (in shares) at Dec. 31, 2022 | 84,441,153 |  | 84,441,153 |  |
Beginning balance at Dec. 31, 2022 | $ 38,607 |  | $ 1 | 342,733 | (304,127)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issuance of common stock upon exercise of stock options (in shares) | 502,704 |  |  |  |
Net loss | $ (39,660) |  |  |  |
Ending balance (in shares) at Jun. 30, 2023 | 97,865,351 |  | 97,865,351 |  |
Ending balance at Jun. 30, 2023 | $ 12,757 |  | $ 1 | 356,543 | (343,787)
Beginning balance (in shares) at Mar. 31, 2023 |  |  | 94,984,332 |  |
Beginning balance at Mar. 31, 2023 | 28,946 |  | $ 1 | 353,897 | (324,952)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issuance of common stock upon exercise of stock options (in shares) |  |  | 132,417 |  |
Issuance of common stock upon exercise of stock options | 38 |  |  | 38 |
Issuance of common stock upon vesting of RSUs (in shares) |  |  | 472,014 |  |
Issuance of common stock upon purchase of ESPP (in shares) |  | 106,545 |  |  |
Issuance of common stock upon purchase of ESPP | $ 31 |  |  | 31 |
Issuance of common stock upon exercise of Pre-Funded Warrants (in shares) | 2,170,043 |  | 2,170,043 |  |
Stock-based compensation - stock options, RSAs, RSUs | $ 2,577 |  |  | 2,577 |
Net loss | $ (18,835) |  |  |  | (18,835)
Ending balance (in shares) at Jun. 30, 2023 | 97,865,351 |  | 97,865,351 |  |
Ending balance at Jun. 30, 2023 | $ 12,757 |  | $ 1 | $ 356,543 | $ (343,787)

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