v3.26.1
Note 9 - Equity (Tables)
12 Months Ended
Dec. 31, 2025
Notes Tables  
Schedule of Stock by Class [Table Text Block]

Date of Purchase

 

Shares Purchased

  

Gross Proceeds

  

Net Proceeds

  

Original Conversion Price

  

Series F Outstanding December 31, 2023

  

Issuances

  

Series F Converted

  

Shares Outstanding December 31, 2024

  

Conversion Price December 31, 2024

  

Shares Issuable December 31, 2024

 

March 9, 2023

  3,000   3,000,000   3,000,000   420.00   3,000   -   (3,000)    $1.1000   - 

November 15, 2023

  1,850   1,850,000   1,850,000   124.70   1,850   -   (1,700)  150   1.1000   136,364 
   4,850  $4,850,000  $4,850,000      4,850   -   (4,700)  150      136,364 
                                         

March 6, 2024

  1,000   1,000,000   950,000   60.29      1,000   (565)  435   1.1000   395,455 

April 12, 2024

  1,050   1,050,000   1,050,000   37.00      1,050      1,050   1.1000   954,545 

May 31, 2024

  1,050   1,050,000   1,025,000   32.15      1,050      1,050   1.1000   954,545 

July 25, 2024

  500   500,000   500,000   23.15      500      500   1.1000   454,545 

August 27, 2024

  500   500,000   500,000   20.19      500      500   1.1000   454,545 

October 1, 2024 (i)

  1,500         12.00      1,500      1500   1.1000   1,363,636 

December 18, 2024

  750   750,000   750,000   5.25      750      750   5.2500   142,857 

2024 Activity

  6,350  $4,850,000  $4,775,000         6,350   (565)  5,785      4,720,128 
                                         
   11,200  $9,700,000  $9,625,000      4,850   6,350   (5,265)  5,935      4,856,492 
                                         

Date of Purchase

 

Shares Purchased

  

Gross Proceeds

  

Net Proceeds

  

Original Conversion Price

  

Series F Outstanding December 31, 2024

  

Issuances

  

Series F Converted

  

Shares Outstanding December 31, 2025

  

Conversion Price December 31, 2025

  

Shares Issuable December 31, 2025

 

November 15, 2023

  1,850   1,850,000   1,850,000  $124.70   150         150  $0.8294   180,854 

March 6, 2024

  1,000   1,000,000   950,000   60.29   435      (335)  100   0.8294   120,569 

April 12, 2024

  1,050   1,050,000   1,050,000   37.00   1,050      (1,050)     0.8294    

May 31, 2024

  1,050   1,050,000   1,025,000   32.15   1,050      (915)  135   0.8294   162,768 

July 25, 2024

  500   500,000   500,000   23.15   500      (500)     0.8294    

August 27, 2024

  500   500,000   500,000   20.19   500      (500)     0.8294    

October 1, 2024 (i)

  1,500         12.00   1,500      (1,500)     0.8294    

December 18, 2024

  750   750,000   750,000   5.25   750      (750)     0.8294    
   8,200  $6,700,000  $6,625,000      5,935      (5,550)  385      464,191 
                                         

February 7, 2025

  1,000   1,000,000   1,000,000   2.2203      1,000   (1,000)     0.8294    

March 17, 2025

  500   500,000   500,000   1.2036      500   (500)     0.8294    

May 5, 2025

  500   500,000   500,000   0.8294      500   (500)     0.8294    

June 6, 2025

  500   500,000   500,000   1.1938      500   (500)     1.1938    

June 9, 2025

  1,000   1,000,000   1,000,000   1.1928      1,000   (1,000)     1.1928    

June 17, 2025

  1,000   1,000,000   1,000,000   1.2546      1,000   (1,000)     1.2546    

July 11, 2025

  800   800,000   800,000   1.1908      800   (800)     1.1908    

July 18, 2025

  1,000   1,000,000   1,000,000   1.4000      1,000   (578)  422   0.9615   438,898 

July 21, 2025

  500   500,000   500,000   1.4000      500      500   0.9615   520,021 

July 24, 2025

  1,000   1,000,000   1,000,000   2.1900      1,000      1,000   0.9615   1,040,042 

August 22, 2025

  500   500,000   500,000   1.8149      500   (500)     0.9615    

September 19, 2025

  500   500,000   500,000   1.8342      500   (500)     0.9615    

October 3, 2025

  2,000   2,000,000   2,000,000   2.0679      2,000   (2,000)     0.9615    

October 6, 2025

  1,000   1,000,000   1,000,000   2.3427      1,000   (185)  815   0.9615   847,634 

November 24, 2025

  500   500,000   500,000   1.1347      500      500   0.9615   520,021 

December 22, 2025

  500   500,000   500,000   0.9615      500      500   0.9615   520,021 

Total 2025 Activity

  12,800  $12,800,000  $12,800,000         12,800   (9,063)  3,737   -   3,886,636 
                                         

Grand Total Activity

  21,000  $19,500,000  $19,425,000   -   5,935   12,800   (14,613)  4,122   -   4,350,827 

Date of Purchase

 

Shares Purchased

  

Gross Proceeds

  

Net Proceeds

  

Original Conversion Price

  

Series F Outstanding December 31, 2024

  

Issuances

  

Series F Converted

  

Shares Outstanding December 31, 2025

  

Conversion Price December 31, 2025

  

Shares Issuable December 31, 2025

 

November 10, 2025

  12,000  $12,000,000  $-  $1.2300   -   12,000   (5,810)  6,190  $0.9615   6,437,858 
   12,000  $12,000,000  $-      -   12,000   (5,810)  6,190  $0.9615   6,437,858 
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
  

December 31, 2025

  

December 31, 2024

  

October 1, 2024 (Issuance)

 

Exercise price

 $  $1.9445  

$12.00 - $25.00

 

Stock price

 $0.8138  $3.4700  $7.9100 

Expected term (year)

  3.75   4.75   5.00 

Volatility

  140.18%  133.00%  108.00%

Risk-free rate

  3.64%  4.28%  3.45%

Dividend yield

  %  %  %

Probability of capital raise below exercise price

  100%  100%  100%
Schedule of Dividends Payable [Table Text Block]

Deemed Dividends on Series F and G Preferred Stock

 

Date of Trigger Event

 

Description of Trigger Event

 

Series F & G Shares Triggered

  

Conversion Prices Prior to Trigger

  

Conversion Price After Trigger

  

Incremental Value Deemed Dividend

 
                   

March 17, 2025

 

March 2025 Down Round Trigger

  5,025  $2.2203 - 5.2500  $1.2000  $976,637 

May 5, 2025

 

May 2025 Down Round Trigger

  4,317  $1.1000 - 1.2036  $0.8294   1,105,871 

July 11, 2025

 

July 2025 Down Round Trigger

  1,900   $1.1938 - $1.2546  $1.1908   55,202 

August 22, 2025

 

August 2025 Down Round Trigger

  1,000  $2.1900  $1.8149   130,710 

November 24, 2025

 

November 2025 Down Round Trigger

  11,698  $2.3427 - 1.2300  $1.1347   1,257,184 

December 22, 2025

 

December 2025 Down Round Trigger

  9,427  $1.1347  $0.9615   1,097,536 
  

Deemed Dividends on Series F

             $4,623,140 

Deemed Dividends on Series F Warrants

 

Date of Trigger Event

 

Description of Trigger Event

 

Series F Warrants Triggered

  

Conversion Prices Prior to Trigger

  

Conversion Price After Trigger

  

Incremental Value Deemed Dividend

 
                   

March 17, 2025

 

March 2025 Down Round Trigger

  1,045,402  $2.22 - 2.25  $1.2000  $79,695 

May 5, 2025

 

May 2025 Down Round Trigger

  1,551,243  $1.10   0.8294   36,504 

July 11, 2025

 

July 2025 Down Round Trigger

  1,551,243  $1.19 - 1.25   1.1908   6,555 

August 22, 2025

 

August 2025 Down Round Trigger

  456,621  $2.19   1.8149   16,059 

December 22, 2025

 

December 2025 Down Round Trigger

  4,232,630  $1.1347 - 2.3427   0.9615   276,317 
                $415,130 
                   

Deemed Dividends on Series B Warrants (see Note 8)

 

May 5, 2025

 

May 2025 Down Round Trigger

  6,777,101  $1.9445  $0.8294  $2,426,968 
  

Deemed Dividends on Series B Warrants

             $2,426,968 
  

Warrant Modification (i)

             $108,468 
  

Total Deemed Dividends

             $7,573,706 

Deemed Dividends on Series F Preferred Stock

 

Date of Trigger Event

 

Description of Trigger Event

 

Series F Outstanding

  

Conversion Prices Prior to Trigger

  

Conversion Price After Trigger

  

Incremental Value Deemed Dividend

 

March 6, 2024

 

March 2024 Down Round Trigger

  3,945  $60.29 -124.50   30.00  $5,102,674 

August 27, 2024

 

August 2024 Down Round Trigger

  3,755  $23.15 - 37.00   20.19  $1,233,685 

October 1, 2024

 

October 2024 Offering

  5,200  $12.00 - 20.19   4.00  $6,459,543 

October 22, 2024

 

Share Combination Event

  5,200  $4.00   1.10  $4,159,552 
  

Deemed Dividends on Series F

             $16,955,454 

Deemed Dividends on Series F Warrants

 

Date of Trigger Event

 

Description of Trigger Event

 

Series F Warrants Outstanding

  

Conversion Prices Prior to Trigger

  

Conversion Price After Trigger

  

Incremental Value Deemed Dividend

 

March 6, 2024

 

March 2024 Down Round Trigger

  54,695  $60.29 - 124.50   30.00  $147,030 

August 27, 2024

 

August 2024 Down Round Trigger

  137,331  $23.15 - 37 .00   20.19   216,546 

October 1, 2024

 

October 2024 Offering

  162,096  $20.19   4.00   365,665 

October 22, 2024

 

Share Combination Event

  162,096  $4.00   1.10   64,007 
  

Deemed Dividends on Series F Warrants

             $793,248 
  

Warrant Modification (i)

             $7,752 
  

Total Deemed Dividends

             $17,756,454 
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
  

Shares

  

Weighted Average Grant Date Fair Value Per Share

 

Outstanding as of December 31, 2024

  7,293  $324.64 

Granted

  281,262   1.38 

Canceled

  (1,158)  284.01 

Vested and released

  (235,357)  2.75 

Outstanding as of December 31, 2025

  52,040  $34.26 

Vested as of December 31, 2025

  1,243  $1,363.11 

Unvested as of December 31, 2025

  50,797  $1.75 
  

Shares

  

Weighted Average Grant Date Fair Value Per Share

 

Outstanding as of December 31, 2023

  3,054  $910.29 

Granted

  7,959   16.54 

Canceled

  (3,020)  25.16 

Vested and released

  (700)  782.79 

Outstanding as of December 31, 2024

  7,293  $324.64 

Vested as of December 31, 2024

  3,443  $661.60 

Unvested as of December 31, 2024

  3,850  $16.74 
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
  

Shares

  

Weighted Average Exercise Price

  

Weighted Average Grant Date Fair Value

  

Weighted Average Remaining Contractual Term (Years)

  

Aggregate Intrinsic Value

 

Outstanding as of December 31, 2024

  56  $5,342  $2,874   1.23  $ 

Granted

               

Exercised

               

Expired/forfeited

  (56)  2,874   160,941       

Outstanding as of December 31, 2025

    $  $     $ 

Exercisable as of December 31, 2025

    $  $     $ 
  

Shares

  

Weighted Average Exercise Price

  

Weighted Average Grant Date Fair Value

  

Weighted Average Remaining Contractual Term (Years)

  

Aggregate Intrinsic Value

 

Outstanding as of December 31, 2023

  2,505  $2,000  $1,080   1.49  $2,294 

Granted

               

Exercised

               

Expired/forfeited

  (2,449)  1,953   1,060       

Outstanding as of December 31, 2024

  56  $5,342  $2,874   1.23  $ 

Exercisable as of December 31, 2024

  56  $5,342  $2,874   1.23  $ 
Equity-Linked Instruments [Member]  
Notes Tables  
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
  

December 31, 2025

  

December 31, 2024

 

Expected term (years)

  0.25 - 3.0   1 - 3 

Volatility

  131.32 - 162.77%  84.88 - 152.24%

Risk-free rate

  3.50 - 4.41%  3.52 - 4.55%

Dividend yield

  %  %