Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Stock Incentive Plan - Options Outstanding (Details)

v3.23.2
Note 5 - Stock Incentive Plan - Options Outstanding (Details)
 6 Months Ended
Jun. 30, 2023
$ / shares
shares
Number of shares subject to options outstanding (in shares) 2,114,001
Weighted-average remaining contractual term (Year) 6 years 11 months 19 days
Number of shares subject to options fully vested and exercisable (in shares) 1,345,505
Weighted-average remaining contractual term (Year) 5 years 9 months 7 days
Price Range 1 [Member]  
Lower exercise price (in dollars per share) | $ / shares $ 0.001
Upper exercise price (in dollars per share) | $ / shares $ 5.00
Number of shares subject to options outstanding (in shares) 1,376,895
Weighted-average remaining contractual term (Year) 7 years 5 months 4 days
Number of shares subject to options fully vested and exercisable (in shares) 698,533
Weighted-average remaining contractual term (Year) 5 years 8 months 4 days
Price Range 2 [Member]  
Lower exercise price (in dollars per share) | $ / shares $ 5.01
Upper exercise price (in dollars per share) | $ / shares $ 10.00
Number of shares subject to options outstanding (in shares) 617,942
Weighted-average remaining contractual term (Year) 6 years 3 days
Number of shares subject to options fully vested and exercisable (in shares) 530,365
Weighted-average remaining contractual term (Year) 5 years 8 months 15 days
Price Range 3 [Member]  
Lower exercise price (in dollars per share) | $ / shares $ 10.01
Upper exercise price (in dollars per share) | $ / shares $ 15.00
Number of shares subject to options outstanding (in shares) 113,039
Weighted-average remaining contractual term (Year) 6 years 7 months 2 days
Number of shares subject to options fully vested and exercisable (in shares) 110,482
Weighted-average remaining contractual term (Year) 6 years 7 months 2 days
Price Range 4 [Member]  
Lower exercise price (in dollars per share) | $ / shares $ 15.01
Upper exercise price (in dollars per share) | $ / shares $ 20.00
Number of shares subject to options outstanding (in shares) 6,125
Weighted-average remaining contractual term (Year) 6 years 7 months 2 days
Number of shares subject to options fully vested and exercisable (in shares) 6,125
Weighted-average remaining contractual term (Year) 6 years 7 months 2 days