Stock Award Plans (Tables)
|
12 Months Ended |
Dec. 31, 2022 |
|---|
| Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
|
| Stock Based Award Plans |
The following table summarizes information about the Company’s stock-based award plans as of December 31, 2022:
|
|
|
Outstanding
Options |
|
|
Outstanding
Restricted
Stock Units |
|
|
Shares Available
for Future
Issuance |
|
|
2004 Equity Incentive Plan |
|
|
1,320 |
|
|
|
— |
|
|
|
— |
|
|
2013 Equity Incentive Plan |
|
|
3,240,690 |
|
|
|
— |
|
|
|
— |
|
|
2018 Equity Incentive Plan |
|
|
5,832,577 |
|
|
|
11,838,329 |
|
|
|
2,802,796 |
|
|
Total |
|
|
9,074,587 |
|
|
|
11,838,329 |
|
|
|
2,802,796 |
|
|
| Stock Based Compensation Expense Recognized in Accompanying Consolidated Statements of Operations by Category |
Total stock-based compensation expense recognized in the accompanying consolidated statements of operations is included in the following categories (in thousands):
|
|
|
Year Ended December 31, |
|
|
|
|
2022 |
|
|
2021 |
|
|
2020 |
|
|
Cost of goods sold |
|
$ |
329 |
|
|
$ |
407 |
|
|
$ |
446 |
|
|
Cost of revenue — collaborations and services |
|
|
1,425 |
|
|
|
1,708 |
|
|
|
626 |
|
|
Research and development |
|
|
1,044 |
|
|
|
614 |
|
|
|
338 |
|
|
Selling |
|
|
1,194 |
|
|
|
2,578 |
|
|
|
1,158 |
|
|
General and administrative |
|
|
9,455 |
|
|
|
6,893 |
|
|
|
3,943 |
|
|
Total |
|
$ |
13,447 |
|
|
$ |
12,200 |
|
|
$ |
6,511 |
|
|
| Assumptions Used to Calculate Fair Value of Employee Stock Options |
The Company calculated the fair value of employee stock options granted during the year ended December 31, 2020 using the following assumptions:
|
|
|
Year Ended December 31, |
|
|
|
|
2020 |
|
|
Risk-free interest rate |
|
0.39% — 1.52% |
|
|
Expected lives |
|
5.67 — 7.0 years |
|
|
Volatility |
|
93.83% — 94.25% |
|
|
Dividends |
|
|
— |
|
|
| Summary of Stock Options Outstanding |
The following table summarizes information relating to stock options:
|
|
|
Number of
Shares |
|
|
Weighted
Average Exercise
Price per Share |
|
|
Weighted
Average
Remaining
Contractual
Term
(Years) |
|
|
Aggregate
Intrinsic
Value ($000) |
|
|
Outstanding at January 1, 2022 |
|
|
10,732,513 |
|
|
$ |
3.01 |
|
|
|
5.49 |
|
|
$ |
34,543 |
|
|
Granted |
|
|
— |
|
|
|
— |
|
|
|
|
|
|
|
|
|
|
Exercised |
|
|
(1,196,391 |
) |
|
|
1.79 |
|
|
|
|
|
|
|
|
|
|
Forfeited |
|
|
(116,767 |
) |
|
|
1.82 |
|
|
|
|
|
|
|
|
|
|
Expired |
|
|
(344,768 |
) |
|
|
6.31 |
|
|
|
|
|
|
|
|
|
|
Outstanding at December 31, 2022 |
|
|
9,074,587 |
|
|
$ |
3.06 |
|
|
|
5.10 |
|
|
$ |
29,512 |
|
|
Exercisable at December 31, 2022 |
|
|
7,776,518 |
|
|
$ |
3.23 |
|
|
|
5.15 |
|
|
$ |
25,315 |
|
|
| Summary of Restricted Stock Unit Activity |
The following table summarizes information relating to restricted stock units:
|
|
|
Number of
Shares |
|
|
Weighted
Average
Grant Date
Fair Value
per Share |
|
|
Outstanding at January 1, 2022 |
|
|
9,538,032 |
|
|
$ |
3.40 |
|
|
Granted |
|
|
5,120,682 |
|
|
|
3.95 |
|
|
Vested |
|
|
(1,551,088 |
) |
|
|
2.82 |
|
|
Forfeited |
|
|
(1,269,297 |
) |
|
|
3.97 |
|
|
Outstanding at December 31, 2022 |
|
|
11,838,329 |
|
|
|
3.65 |
|
|