Quarterly report pursuant to Section 13 or 15(d)

Stock Plans and Stock-Based Compensation

Stock Plans and Stock-Based Compensation
3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement [Abstract]  
Stock Plans and Stock-Based Compensation
7. Stock Plans and Stock-Based Compensation

Stock Plans
As of March 31, 2022, there were 2,433,522 shares available for future grants under the Company’s 2013 Equity Incentive Plan and no shares available for grant under the Company’s 2020 New Hire Plan. On January 1, 2022, in accordance with the annual share increase provision in the 2013 Plan, the Company added 4,233,896 shares to the 2013 Plan share reserve. During the three months ended March 31, 2022, the Company granted 3,479,668 stock options, which primarily related to its option grants issued to employees and directors.
Stock-Based Compensation Expense
Stock-based compensation expense is included in the condensed consolidated statements of operations and comprehensive loss and is as follows (in thousands):
Three Months Ended
March 31,
Research and development
   $ 1,098      $ 1,077  
General and administrative
     1,316        1,428  
Total stock-based compensation expense
   $ 2,414      $ 2,505