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Net Loss per Share
9 Months Ended
Sep. 30, 2021
Earnings Per Share [Abstract]  
Net Loss per Share Net Loss per Share
Basic and diluted net loss and the number of shares used for basic and diluted net loss calculations were the same for all period presented because we were in a loss position.

The following potentially dilutive securities were not included in the calculation of diluted shares as the effect would have been anti‑dilutive (in thousands):
Three Months Ended September 30,Nine Months Ended September 30,
 2021202020212020
Restricted stock units and awards2,195 3,498 2,547 2,129 
Employee stock purchase plan— 39 — — 
Common stock options2,544 3,593 2,717 3,593 
 4,739 7,130 5,264 5,722