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Net Loss Per Share Attributable to Common Stockholders | 6 Months Ended
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Jun. 30, 2021
Earnings Per Share [Abstract] |
Net Loss Per Share Attributable to Common Stockholders | Net Loss Per Share Attributable to Common Stockholders The following tables present calculations for basic and diluted net loss per share (in thousands, except per share amounts):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Net loss | $ | (3,083) |  |  | $ | (5,476) |  |  | $ | (6,011) |  |  | $ | (16,713) |
Less accretion of redeemable convertible preferred stock | (25) |  |  | (22) |  |  | (51) |  |  | (45) |
Loss applicable to common stockholders basic and diluted | (3,108) |  |  | (5,498) |  |  | $ | (6,062) |  |  | $ | (16,758) |
Weighted-average shares used in computing net loss per share attributable to common shareholders, basic and diluted | 13,636 |  |  | 13,121 |  |  | 13,513 |  |  | 13,110 |
Net loss per share attributable to ordinary shareholders, basic and diluted | $ | (0.23) |  |  | $ | (0.42) |  |  | $ | (0.45) |  |  | $ | (1.28) |
The following outstanding shares of common stock equivalents (in thousands) as of the periods presented were excluded from the computation of diluted net loss per share for the periods presented because the impact of including them would have been anti-dilutive (in thousands):
| As of June 30,
| 2021 |  | 2020
Convertible preferred stock | 35,793 |  |  | 31,755 |
Stock options | 3,305 |  |  | 3,609 |
Unvested restricted stock awards | 288 |  |  | 138 |
Common stock warrants | 50 |  |  | 42 |
Total | 39,436 |  |  | 35,544 |

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