Annual report pursuant to Section 13 and 15(d)

4. Stock Incentive Plan (Details)

v3.21.1
4. Stock Incentive Plan (Details) - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]    
Stock options outstanding, beginning 1,087,463 1,105,896
Stock options, granted [1] 174,357  
Stock options, forfeited [2] (3,243)  
Stock options, exercised   (18,433)
Stock options outstanding, ending 1,258,577 1,087,463
Weighted average exercise price outstanding, beginning $ 2.94 $ 2.99
Weighted average exercise price, granted 14.13  
Weighted average exercise price, forfeited 8.47  
Weighted average exercise price, exercised   5.97
Weighted average exercise price outstanding, ending $ 4.47 $ 2.94
[1] 174,357 options vest as follows: options to purchase 145,648 shares of the Company's common stock vest 6/48ths on the six-month anniversary of grant date and 1/48th per month thereafter; options to purchase 22,584 shares of the Company's common stock vest quarterly over one year; and options to purchase 6,125 shares of the Company's common stock vest monthly over one year.
[2] Forfeited options resulted from an employee termination.