v3.26.1
Note 8 - Stock-based Compensation - Option Activity (Details)
$ / shares in Units, $ in Thousands
 6 Months Ended
Jun. 30, 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 1,665,500
Granted, weighted average exercise price (in dollars per share) | $ / shares $ 0.83
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 (60,053)
Expired, weighted average exercise price (in dollars per share) | $ / shares $ 61.04
Exercised, number of options (in shares) | shares 0
Exercised, weighted average exercise price (in dollars per share) | $ / shares $ 0
June 30, 2026 (in shares) | shares 4,215,924
June 30, 2026 (in dollars per share) | $ / shares $ 4.31
June 30, 2026 (Year) 8 years 2 months 12 days
June 30, 2026 | $ $ 664
Vested and exercisable options— March 31, 2026 (in shares) | shares 1,418,867
Vested and exercisable options— March 31, 2026 (in dollars per share) | $ / shares $ 11.14
Vested and exercisable options— March 31, 2026 (Year) 6 years 4 months 24 days
Vested and exercisable options— March 31, 2026 | $ $ 113
Vested and expected to vest— March 31, 2026 (in shares) | shares 4,215,924
Vested and expected to vest— March 31, 2026 (in dollars per share) | $ / shares $ 4.31
Vested and expected to vest— March 31, 2026 (Year) 8 years 2 months 12 days
Vested and expected to vest— March 31, 2026 | $ $ 664