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Net Loss Attributable to Common Stockholders per Share
 6 Months Ended
Jun. 30, 2022
Earnings Per Share [Abstract]  
Net Loss Attributable to Common Stockholders per Share Net Loss Attributable to Common Stockholders per Share
For purposes of the diluted net loss attributable to common stockholders per share calculation, outstanding stock options, unvested RSAs, unvested RSUs and warrants to purchase common stock are considered to be potentially dilutive securities, however the following weighted-average amounts were excluded from the calculation of diluted net loss attributable to common stockholders per share because their effect would be anti-dilutive (in thousands):
June 30,
20222021
Outstanding stock options
4,383 2,884 
Unvested RSAs178 436 
Unvested RSUs236 — 
Warrants to purchase common stock
59 59 
Total
4,856 3,379