v3.26.3
Note 6 - Stockholders' Equity and Stock-based Compensation Expense (Tables)
9 Months Ended
Sep. 30, 2026
Notes Tables  
Share-Based Payment Arrangement, Activity [Table Text Block]
  

Stock Options

  

Performance Awards

 

Outstanding as of December 31, 2025

  4,157,094   7,142 

Options granted

  27,000   — 

Options exercised

  —   — 

Options forfeited/canceled

  (224,782)  (7,142)

Outstanding as of September 30, 2026

  3,959,312   — 
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
  

Three months ended

  

Nine months ended

 
  

September 30,

  

September 30,

 
  

2026

  

2025

  

2026

  

2025

 

Research and development

 $1,055  $1,294  $3,736  $4,828 

General and administrative

  2,421   3,108   7,880   9,380 

Total stock-based compensation expense

 $3,476  $4,402  $11,616  $14,208