v3.26.1
Note 10 - Stock-based Compensation Expense (Tables)
6 Months Ended
Jun. 30, 2026
Notes Tables  
Share-Based Payment Arrangement, Option, Activity [Table Text Block]

 

 

 

 

 

 

 

 

Weighted-

 

 

 

 

 

 

 

 

 

 

 

 

average

 

 

 

 

 

 

 

 

 

Weighted-

 

 

remaining

 

 

 

 

 

 

 

 

 

average

 

 

contractual

 

 

Aggregate

 

 

 

 

 

 

exercise

 

 

term

 

 

intrinsic

 

 

 

Shares

 

 

price

 

 

(years)

 

 

value

 

Outstanding as of March 31, 2026

 

 

459,863

 

 

$

25.73

 

 

 

9.97

 

 

$

 

Granted

 

 

12,621

 

 

 

1.70

 

 

 

 

 

 

 

Exercised

 

 

 

 

 

 

 

 

 

 

 

 

Cancelled/forfeited

 

 

(38,487

)

 

 

5.69

 

 

 

 

 

 

 

Outstanding as of June 30, 2026

 

 

433,997

 

 

$

26.81

 

 

 

9.59

 

 

$

 

Vested and expected to vest at June 30, 2026

 

 

433,997

 

 

$

26.81

 

 

 

9.59

 

 

$

 

Vested and exercisable at June 30, 2026

 

 

110,607

 

 

$

88.93

 

 

 

9.15

 

 

$

 

 

 

 

 

 

 

 

 

Weighted-

 

 

 

 

 

 

 

 

 

 

 

 

average

 

 

 

 

 

 

 

 

 

Weighted-

 

 

remaining

 

 

 

 

 

 

 

 

 

average

 

 

contractual

 

 

Aggregate

 

 

 

 

 

 

exercise

 

 

term

 

 

intrinsic

 

 

 

Shares

 

 

price

 

 

(years)

 

 

value

 

Outstanding as of December 31, 2025

 

 

924

 

 

$

13,475.78

 

 

 

4.41

 

 

$

 

Granted

 

 

471,652

 

 

 

2.06

 

 

 

 

 

 

 

Exercised

 

 

 

 

 

 

 

 

 

 

 

 

Cancelled/forfeited

 

 

(38,579

)

 

$

46.39

 

 

 

 

 

 

 

Outstanding as of June 30, 2026

 

 

433,997

 

 

$

26.81

 

 

 

9.59

 

 

$

 

Vested and expected to vest at June 30, 2026

 

 

433,997

 

 

$

26.81

 

 

 

9.59

 

 

$

 

Vested and exercisable at June 30, 2026

 

 

110,607

 

 

$

88.93

 

 

 

9.15

 

 

$

 

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

 

 

June 30,

 

 

 

2026

 

 

2025

 

Fair value of common stock

 

$

1.65

 

 

$

-

 

Expected term (in years)

 

 

6.01

 

 

 

-

 

Risk-free rate

 

 

4.21

%

 

 

0.00

%

Expected volatility

 

 

173.62

%

 

 

0.00

%

Dividend yield

 

 

0

%

 

 

0

%