v3.26.1
Note 8 - Stock-based Compensation - Option Activity (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2026
USD ($)
$ / shares
shares
Number of options outstanding, beginning balance (in shares) | shares 2,610,477
Weighted average exercise price, beginning balance (in dollars per share) | $ / shares $ 7.84
Granted, number of options (in shares) | shares 1,450,600
Granted, weighted average exercise price (in dollars per share) | $ / shares $ 0.81
Forfeited, number of options (in shares) | shares 0
Forfeited, weighted average exercise price (in dollars per share) | $ / shares $ 0
Expired, number of options (in shares) | shares (57,053)
Expired, weighted average exercise price (in dollars per share) | $ / shares $ 61.23
Exercised, number of options (in shares) | shares 0
Exercised, weighted average exercise price (in dollars per share) | $ / shares $ 0
March 31, 2026 (in shares) | shares 4,004,024
March 31, 2026 (in dollars per share) | $ / shares $ 4.53
March 31, 2026 (Year) 8 years 4 months 24 days
March 31, 2026 | $ $ 118
Vested and exercisable options— March 31, 2026 (in shares) | shares 1,141,689
Vested and exercisable options— March 31, 2026 (in dollars per share) | $ / shares $ 13.81
Vested and exercisable options— March 31, 2026 (Year) 6 years 2 months 12 days
Vested and exercisable options— March 31, 2026 | $ $ 2
Vested and expected to vest— March 31, 2026 (in shares) | shares 4,004,024
Vested and expected to vest— March 31, 2026 (in dollars per share) | $ / shares $ 4.53
Vested and expected to vest— March 31, 2026 (Year) 8 years 4 months 24 days
Vested and expected to vest— March 31, 2026 | $ $ 118