June 30,

December 31,

2020

2019

Options outstanding

2,672,864

2,898,977

Unvested restricted stock units outstanding

14,372,988

12,639,066

Unvested performance stock units outstanding

1,005,000

—

Shares available for grant under the 2014 Equity Incentive Plan and 2015 Inducement Plan

658,843

1,301,881

Shares available for purchase under the Employee Stock Purchase Plan

943,545

378,525

Total

19,653,240

17,218,449