| Stock option activity |
| |
|
|
|
|
|
Options Outstanding |
|
| |
|
Options Available |
|
|
|
Number of Options |
|
|
|
Weighted-Average Exercise Price |
|
|
|
|
| Balances at January 1, 2018 |
|
|
941,408 |
|
|
|
|
658,592 |
|
|
|
$ |
0.94 |
|
|
|
|
| Granted(1) |
|
|
(487,304 |
) |
|
|
|
487,304 |
|
|
|
|
6.00 |
|
|
|
|
| Forfeited(2) |
|
|
40,000 |
|
|
|
|
(40,000 |
) |
|
|
|
6.00 |
|
|
|
|
| Exercised |
|
|
— |
|
|
|
|
— |
|
|
|
|
— |
|
|
|
|
| Balances at December 31, 2018 |
|
|
494,104 |
|
|
|
|
1,105,896 |
|
|
|
|
2.99 |
|
|
|
|
| Granted |
|
|
— |
|
|
|
|
— |
|
|
|
|
— |
|
|
|
|
| Forfeited |
|
|
— |
|
|
|
|
— |
|
|
|
|
— |
|
|
|
|
| Exercised |
|
|
— |
|
|
|
|
— |
|
|
|
|
— |
|
|
|
|
| Balances at June 30, 2019 |
|
|
494,104 |
|
|
|
|
1,105,896 |
|
|
|
|
|
|
|
|
|
| (1) |
32,004 options vest as follows: options to purchase up to 12,000 shares of common stock vest on the grant date, options to purchase up to 1,667 shares of common stock vest on the 1st of each month thereafter. 5,000 options vest 6/48ths on the grant date and 1/48th per month thereafter. 5,000 options vest 6/48ths on the six-month anniversary of grant date and 1/48th per month thereafter. 320,900 options vest 6/51 at the six-month anniversary of vesting commencement date and 1/51 per month thereafter, with vesting commencing on October 1, 2018. 104,400 options vest quarterly over 5 quarters, with the first quarter commenced on October 1, 2018. 20,000 options vest as follows: options to purchase up to 1,667 shares of common stock vest on January 31, 2019 and the last day of each month thereafter. |
| (2) |
Forfeited options resulted from an employee termination. |
|
| |
|
|
|
|
|
|
Options Outstanding |
|
|
|
|
|
| |
|
|
Options Available |
|
|
|
Number of Options |
|
|
|
Weighted-Average Exercise Price |
|
| Balances at January 1, 2017 |
|
|
420,000 |
|
|
|
280,000 |
|
|
$ |
0.001 |
|
| Board-approved increase in option pool(1) |
|
|
900,000 |
|
|
|
— |
|
|
|
— |
|
| Granted (2) |
|
|
(378,592 |
) |
|
|
378,592 |
|
|
|
1.63 |
|
| Forfeited |
|
|
— |
|
|
|
— |
|
|
|
— |
|
| Exercised |
|
|
— |
|
|
|
— |
|
|
|
— |
|
| Balances at December 31, 2017 |
|
|
941,408 |
|
|
|
658,592 |
|
|
|
0.94 |
|
| Granted(3) |
|
|
(487,304 |
) |
|
|
487,304 |
|
|
|
6.00 |
|
| Forfeited(4) |
|
|
40,000 |
|
|
|
(40,000 |
) |
|
|
6.00 |
|
| Exercised |
|
|
— |
|
|
|
— |
|
|
|
— |
|
| Balances at December 31, 2018 |
|
|
494,104 |
|
|
|
1,105,896 |
|
|
|
2.99 |
|
|
| Summary of options outstanding |
| |
Exercise Prices |
|
|
|
Number of Shares subject to Options Outstanding |
|
|
Weighted Average Remaining Contractual Term |
|
|
Number of Shares Subject to Options Fully Vested and Exercisable |
|
|
Weighted Average Remaining Contractual Term |
| |
$ |
0.001 |
|
|
|
|
555,520 |
|
|
7.2 years |
|
|
|
440,720 |
|
|
7.1 years |
| |
|
6.00 |
|
|
|
|
550,376 |
|
|
9.0 years |
|
|
|
175,212 |
|
|
8.9 years |
| |
|
|
|
|
|
|
1,105,896 |
|
|
|
|
|
|
615,932 |
|
|
|
|
| Exercise Prices |
|
|
|
Numberof Shares Outstanding |
|
Weighted Average Remaining Contractual Term |
|
Number of Shares Fully Vested and Exercisable |
|
Weighted Average Remaining Contractual Term |
| $ |
0.001 |
|
|
|
|
|
|
|
555,520 |
|
|
|
7.7 years |
|
|
|
406,280 |
|
|
7.6 years |
| $ |
6.00 |
|
|
|
|
|
|
|
550,376 |
|
|
|
9.5 years |
|
|
|
58,910 |
|
|
8.9 years |
| |
|
|
|
|
|
|
|
|
1,105,896 |
|
|
|
|
|
|
|
465,190 |
|
|