Stockholders' Equity (Tables)
3 Months Ended
Mar. 31, 2021
Stockholders' Equity  
Schedule of Common Stock Reserved for Future Issuance

Common stock reserved for future issuance consists of the following:

 

 

 

 

 

 

    

March 31, 

    

December 31, 

 

 

2021

 

2020

Shares available for grant under stock option plans

 

4,262,364

 

1,646,518

Options issued and outstanding under stock option plans

 

3,560,541

 

2,594,597

Unvested restricted stock units

 

 —

 

313,976

Vested restricted stock units not yet settled

 

2,045,634

 

1,731,658

Convertible promissory note payable to CAA

 

 —

 

290,563

Unit purchase options

 

379,486

 

 —

Total common stock reserved for future issuance

 

10,248,025

 

6,577,312