Annual report [Section 13 and 15(d), not S-K Item 405]

Note 14 - Income Taxes (Tables)

v3.25.4
Note 14 - Income Taxes (Tables)
12 Months Ended
Dec. 31, 2025
Notes Tables  
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
   

Years Ended December 31,

 
   

2025

   

2024

 

Domestic

  $ (11,400 )   $ (11,576 )

Foreign

    (295 )     246  

Loss before income taxes

  $ (11,695 )   $ (11,330 )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
   

Year Ended December 31,

 
   

2025

 

U.S. federal statutory income tax rate

  $ (2,456 )     21.0 %

State tax, net of federal tax effect

           

Foreign tax effects:

               

Changes in valuation allowances (Germany)

    553       (4.7 )

Changes in valuation allowances (Other Foreign Jurisdictions)

    (22 )     0.2  

Prior year true-ups (Germany)

    (293 )     2.5  

Other

    (47 )     0.4  

Change in valuation allowance

    2,194       (18.8 )

Imputed interest income

    154       (1.3 )

Unrealized gain

    (394 )     3.4  

Stock-based compensation

    427       (3.7 )

Prior year true-ups

    (157 )     1.3  

Other

    41       (0.3 )

Total tax expense (benefit)

  $       %
   

Year Ended December 31,

 
   

2024

 

Federal tax at statutory rate

    21.0 %

State tax, net of federal tax effect

     

Research and development credit

    (0.1 )

Change in valuation allowance

    (13.5 )

Unrealized gain on warrant

    0.7  

Stock-based compensation

    (4.7 )

Other

    (2.8 )

Foreign

    (0.6 )

Total tax expense (benefit)

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

December 31,

 
   

2025

   

2024

 

Deferred tax assets:

               

Depreciation and other

  $ 297     $ 119  

Net operating loss carryforwards

    57,646       54,001  

Research and development tax credits

    2,210       2,210  

Accruals and reserves

    245       235  

Capitalized research and development costs

    1,360       1,817  

Deferred revenue

    431       400  

Stock compensation expense

    648       1,028  

Lease assets

    82       154  

Other

    41       48  
                 

Deferred tax liabilities:

               

Lease liabilities

    (70 )     (133 )

Prepaid expenses

    (45 )     (54 )

Less: Valuation allowance

    (62,845 )     (59,825 )

Net deferred tax asset (liability)

  $     $  
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
   

Years Ended December 31,

 
   

2025

   

2024

 

Beginning balances as of January 1, 2025 and 2024

  $ 1,836     $ 1,894  

(Decrease) of unrecognized tax benefits taken in prior years

    (43 )     (58 )

Ending balances as of December 31, 2025 and 2024

  $ 1,793     $ 1,836