Quarterly report pursuant to Section 13 or 15(d)

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

v3.23.3
Note 5 - Stock Incentive Plan - Options Outstanding (Details)
 9 Months Ended
Sep. 30, 2023
$ / shares
shares
Number of shares subject to options outstanding (in shares) | shares 1,423,881
Weighted-average remaining contractual term (Year) 5 years 8 months 23 days
Price Range 1 [Member]  
Lower exercise price (in dollars per share) $ 1,371,895
Upper exercise price (in dollars per share) $ 7.21
Number of shares subject to options outstanding (in shares) | shares 762,978
Weighted-average remaining contractual term (Year) 5 years 9 months 14 days
Price Range 2 [Member]  
Lower exercise price (in dollars per share) $ 617,942
Upper exercise price (in dollars per share) $ 5.75
Number of shares subject to options outstanding (in shares) | shares 543,017
Weighted-average remaining contractual term (Year) 5 years 6 months 3 days
Price Range 3 [Member]  
Lower exercise price (in dollars per share) $ 113,039
Upper exercise price (in dollars per share) $ 6.34
Number of shares subject to options outstanding (in shares) | shares 111,761
Weighted-average remaining contractual term (Year) 6 years 4 months 2 days
Price Range 4 [Member]  
Lower exercise price (in dollars per share) $ 6,125
Upper exercise price (in dollars per share) $ 6.34
Number of shares subject to options outstanding (in shares) | shares 6,125
Weighted-average remaining contractual term (Year) 6 years 4 months 2 days