v3.23.1
Note 9 - Stock-based Compensation - Option Activity (Details)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2023
USD ($)
$ / shares
shares
Outstanding (in shares) | shares 725,623
Outstanding (in dollars per share) | $ / shares $ 52.98
Granted (in shares) | shares 264,520
Granted, weighted-average exercise price (in dollars per share) | $ / shares $ 1.76
Forfeited (in shares) | shares (1,950)
Forfeited, weighted-average exercise price (in dollars per share) | $ / shares $ 19.41
Expired (in shares) | shares (90,802)
Expired, weighted-average exercise price (in dollars per share) | $ / shares $ 83.75
Exercised (in shares) | shares 0
Exercised, weighted-average exercise price (in dollars per share) | $ / shares $ 0
Outstanding (in shares) | shares 897,391
Outstanding, weighted-average exercise price (in dollars per share) | $ / shares $ 34.84
Outstanding, weighted-average remaining contractual life (Year) 6 years 10 months 24 days
Outstanding, aggregate intrinsic value | $ $ 0
Vested and exercisable options (in shares) | shares 459,397
Vested and exercisable options, weighted-average exercise price (in dollars per share) | $ / shares $ 58.42
Vested and exercisable options, weighted-average remaining contractual life (Year) 4 years 8 months 12 days
Vested and exercisable options, aggregate intrinsic value | $ $ 0
Vested and expected to vest (in shares) | shares 897,391
Vested and expected to vest, weighted-average exercise price (in dollars per share) | $ / shares $ 34.84
Vested and expected to vest, weighted-average remaining contractual life (Year) 6 years 10 months 24 days
Vested and expected to vest, aggregate intrinsic value | $ $ 0