v3.26.1
Note 9 - Income Taxes (Tables)
12 Months Ended
Dec. 31, 2025
Notes Tables  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
  

For the year ended December 31,

 
  

2025

 
  

Amount

  

Percent

 

U.S. federal statutory tax rate

 $(615)  21%

State and local income taxes, net of federal income tax effect(1)

  2   0%

Tax credits

  (59)  2%

Change in valuation allowance

  (870)  30%

Non-deductible items

  22   -1%

Other adjustments

        

Sale of subsidiary(2)

  1,522   -52%

Provision for income taxes and effective income tax rate

 $2   0

%

  

For the year ended December 31,

 
  

2024

 

Statutory federal income tax rate

  21%

State rate change

  (14)%

Credits

  1%

None-deductible items

  1%

Return to provision

  (12)%

Change in fair value of warrant liability

  (2)%

Change in valuation allowance

  6%

Income taxes provision (benefit)

  (0)%
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
  

As of December 31,

 
  

2025

  

2024

 

Deferred tax assets:

        

Net operating loss carryforwards

 $27,530  $27,114 

Stock compensation and other

  520   404 

In process research and development

  1,303   1,929 

Accruals and reserves

  38   3 

Section 174 capitalization

  2,143   2,536 

Tax credits

  3,043   2,995 

Other

  23   — 

Total deferred tax assets

  34,600   34,981 

Less: valuation allowance

  (34,600)  (34,981)

Deferred tax assets, net

 $—  $—