Quarterly report pursuant to Section 13 or 15(d)

Stock Option Plan and Stock-Based Compensation (Tables)

v3.21.2
Stock Option Plan and Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2021
Share-based Payment Arrangement [Abstract]  
Stock Option Plan Activity
Activity under the Company’s stock option plans is set forth below:
Options Weighted-Average
Exercise Price		 Weighted-Average
Remaining
Contractual Term
in years
(In thousands) (Per Share Data) (Years)
Outstanding as of December 31, 2019
4,846  $ 0.98  8.1
Granted 18,944  $ 0.26 
Exercised (55) $ 0.98 
Forfeited or expired (1,772) $ 0.93 
Outstanding as of September 30, 2020
21,963  $ 0.36  9.3
Options vested and expected to vest as of September 30, 2020
 21,963  $ 0.36 
Vested and exercisable as of September 30, 2020
 2,524  $ 0.97 
Outstanding as of December 31, 2020
21,471  $ 0.33  9.3
Granted 1,024  $ 6.69 
Exercised (200) $ 1.56 
Forfeited or expired (951) $ 0.61 
Outstanding as of September 30, 2021
21,344  $ 0.61  8.5
Options vested and expected to vest as of September 30, 2021
 21,344  $ 0.61 
Vested and exercisable as of September 30, 2021
 7,776  $ 0.58 
Weighted-Average Assumptions Used in Stock Options
The weighted-average assumptions in the Black-Scholes option-pricing model used to determine the fair value of stock options granted were as follows:
Nine months ended September 30,
2021 2020
Expected volatility 59  % 60  %
Risk-free interest rate
0.9% – 1.0%
0.3% – 0.8%
Dividend yield —  % —  %
Expected term (in years) 5.72 6.05
Schedule of Stock-Based Compensation Expense
The following sets forth the total stock-based compensation expense for the stock options included in the statements of operations:
Three Months Ended September 30, Nine Months Ended September 30,
2021 2020 2021 2020
(In thousands) (In thousands)
Research and development $ 211  $ 219  $ 598  $ 601 
Selling and marketing 105  145  280  358 
General and administrative 360  102  873  284 
$ 676  $ 466  $ 1,751  $ 1,243