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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
Since the Company was in a loss position for all periods presented, basic net loss per share is the same as diluted net loss per share for all periods as the inclusion of all potential shares of common stock outstanding would have been anti-dilutive.

Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows:
Three and Nine Months Ended September 30,
20212020
Options issued and outstanding and ESPP shares issuable
13,877,115 13,680,889 
Restricted shares subject to future vesting
2,621,853 2,269,897 
Total
16,498,968 15,950,786