v3.26.1
Note 9 - Income Taxes (Tables)
12 Months Ended
Jun. 30, 2026
Notes Tables  
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
  

Year Ended June 30,

 
  

2026

  

2025

 

Pretax income (loss):

        

United States

 $(24,582,719) $(14,118,076)

Foreign

  4,351,869   (717,316)

Loss before income taxes

 $(20,230,850) $(14,835,392)
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
  

Year Ended June 30,

 
  

2026

  

2025

 

Current:

        

Federal tax

 $  $ 

State

  51,246   22,168 

Foreign

  231,756   224,743 

Total current

  283,002   246,911 
         

Deferred:

        

Federal tax

     (30,752)

State

  (63,330)  (5,798)

Foreign

  95,041   (172,571)

Total deferred

  31,711   (209,121)
         

Total income tax provision

 $314,713  $37,790 
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
  

Year Ended June 30, 2026

 
  

Amount

  

Percent

 
         

Current tax at U.S. statutory rate

 $(4,248,479)  21.0%

State income taxes, net of federal benefit (1)

  (13,657)  0.1%

Foreign tax effects

        

Latvia - statutory rate differences

  (598,961)  3.0%

Other foreign tax effects

  11,865   (0.1)%

Effect of cross-border tax law

        

GILTI

  848,864   (4.2)%

Tax credits

        

Federal research and development credit expiration

  103,598   (0.5)%

Changes in valuation allowance

  3,256,056   (16.1)%

Nondeductible/nontaxable items

  173,242   (0.9)%

NOL expiration and adjustments

  733,630   (3.6)%

Other adjustments

  48,555   (0.2)%
  $314,713   (1.6)%
  

Year Ended June 30, 2025

 
     

U.S. federal statutory tax rate

  21%
     

Income tax provision reconciliation:

    

Tax at statutory rate:

 $(3,115,433)

Net foreign income subject to lower tax rate

  (60,104)

State income taxes, net of federal benefit

  (475,224)

Valuation allowance

  1,879,595 

NOL expiration and adjustments

  939,505 

GILTI

  192,980 

Federal research and development credit expiration

  206,467 

Federal research and development and other credits

  (225,532)

Rate change

  14,759 

Stock-based compensation

  (66,682)

Other permanent differences

  54,147 

Acquisition financing

  455,901 

Prior year true-ups

  237,411 
  $37,790 
Schedule of Income Taxes Paid [Table Text Block]
  

Year Ended June 30, 2026

 
     

Federal tax

 $ 
     

State:

    

New Hampshire

  11,488 

Other states

  8,376 

Total state

  19,864 
     

Foreign:

   

China income tax

  237,990 

China withholding tax

  67,782 

Total foreign

  305,772 
     

Total cash paid for income taxes (net of refunds)

 $325,636 
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
  

Year Ended June 30,

 
  

2026

  

2025

 

Deferred tax assets:

        

Net operating loss carryforwards

 $10,494,407  $10,086,362 

Stock-based compensation

  342,093   315,311 

R&D and other credits

  1,849,781   1,954,068 

Capitalized R&D expenses

  781,803   1,203,265 

Inventories

  392,489   331,725 

Intangible assets

  1,513,177    

Lease liability

  2,244,816   2,149,965 

Disallowed interest expense

  180,651   200,821 

Accrued expenses and other

  2,550,285   540,585 

Gross deferred tax assets

  20,349,502   16,782,102 

Valuation allowance for deferred tax assets

  (17,789,144)  (13,963,557)

Total deferred tax assets

  2,560,358   2,818,545 

Deferred tax liabilities:

        

Depreciation and other

  (218,395)  (321,825)

Right-of-use asset

  (2,351,145)  (2,212,710)

Intangible assets

     (414,199)

Total deferred tax liabilities

  (2,569,540)  (2,948,734)

Net deferred tax assets (liabilities)

 $(9,182) $(130,189)