Quarterly report [Sections 13 or 15(d)]

Note 6 - Stockholders' (Deficit) Equity and Equity-linked Instruments (Tables)

v3.25.3
Note 6 - Stockholders' (Deficit) Equity and Equity-linked Instruments (Tables)
9 Months Ended
Sep. 30, 2025
Notes Tables  
Schedule of Stock by Class [Table Text Block]
        Preferred Stock     Proceeds    

Conversion Shares – Common

Stock

    Other  

Series

Designation

 

Closing

Date

 

Conversion

Prices(2)(3)(4)(7)

   

Shares

Purchased/

Exchange(6)
   

Conversions

/Exchanges

   

Outstanding-

September 30, 2025

   

Gross

Proceeds

    Fees    

Net

Proceeds

    Original    

Conversions

/Exchanges(5)

   

September 30, 2025

   

Placement

Agent

Warrants(1)

 

A

 

November 22,

2022

  $ 496.4       5,359       (5,359 )     -     $ 5,359,000     $ 697,000     $ 4,662,000       11,000       (11,000 )     -       2,000  

A-2

 

November 28,

2022

  $ 531.6       1,297       (1,297 )     -       1,297,000       169,000       1,128,000       2,000       (2,000 )     -       -  

A-3

 

November 30,

2022

  $ 536.4       1,733       (1,733 )     -       1,733,000       225,000       1,508,000       3,000       (3,000 )     -       -  

A-4

 

December 22,

2022

  $ 304       1,934       (1,934 )     -       1,934,000       251,000       1,683,000       6,000       (6,000 )     -       1,000  

A-5

 

January 31,

2023

  $ 443.6       2,299       (2,299 )     -       2,299,000       299,000       2,000,000       5,000       (5,000 )     -       1,000  

AA

 

April 19,

2023

 

$377.20/$75.60

      7,680       (7,527 )     153       7,680,000       966,000       6,714,000       102,000       (100,000 )     2,000       3,000  

AA-2

 

April 20,

2023

 

$417.20/$83.60

      1,500       (1,500 )     -       1,500,000       130,000       1,370,000       18,000       (18,000 )     -       -  

AA-3

 

April 28,

2023

 

$380.00/$76.00

      1,025       (1,025 )     -       1,025,000       133,000       892,000       13,000       (13,000 )     -       -  

AA-4

 

May 5,

2023

 

$371.20/$74.40

      1,026       (1,026 )     -       1,026,000       133,000       893,000       14,000       (14,000 )     -       -  

AA-5

 

May 26,

2023

 

$424.00/$84.80

      550       (550 )     -       550,000       72,000       478,000       6,000       (6,000 )     -       -  

AAA

 

November 30,

2023

 

$66.80/$20.08

      9,388       (9,273 )     115       5,377,000       645,000       4,732,000       467,000       (462,000 )     5,000       19,000  

AAA-2

 

December 22,

2023

 

$68.40/$20.52

      5,334       (5,178 )     156       2,978,000       357,000       2,621,000       81,000       (73,000 )     8,000       11,000  

AAA-Junior

 

June 26,

2024

 

$50.00/$15.00

      1,210       (1,205 )     5       1,210,000       145,000       1,065,000       81,000       (80,000 )     1,000       4,000  

AAA-Junior-2

 

July 10,

2024

 

$50.00/$15.00

      551       (541 )     10       551,000       66,000       485,000       37,000       (36,000 )     1,000       2,000  

AAA-Junior-3

 

September 20,

2024

 

$50.00/$15.00

      697       (697 )     -       697,000       84,000       613,000       46,000       (46,000 )     -       2,000  

AAA-Junior-4

 

September 30,

2024

 

$50.00/$15.00

      399       (399 )     -       399,000       48,000       351,000       27,000       (27,000 )     -       1,000  

AAAA-Junior(8)

 

July 14,

2025

  $ 4.91       3,394,964       (1,528,483 )     1,866,481       -       -       -       691,000       (311,000 )     380,000       -  

B(9)

 

September 29,

2025

  $ 7       15,987       -       15,987       -       -       -       2,284,000       -       2,284,000       -  
                  3,452,933       (1,570,026 )     1,882,907     $ 35,615,000     $ 4,420,000     $ 31,195,000       3,894,000       (1,213,000 )     2,681,000       46,000  
Share-based Payment Arrangement, Warrants, Activity [Table Text Block]
   

Three Months

   

Nine Months

 
   

Ended September 30,

   

Ended September 30,

 
   

2025

   

2024

   

2025

   

2024

 

Series AAA Junior-3 and Series AAA Junior-4 Warrants:

                               

Beginning balance

  $ 20,000     $ -     $ 348,000     $ -  

Initial fair value of warrant liability – grant date(1)

    -       346,000       -       346,000  

Change in fair value

    (3,000 )     14,000       (331,000 )     14,000  

Subtotal - Fair value of warrant liability - Series AAA Junior -3 and Series AAA Junior – 4 Warrants

    17,000       360,000       17,000       360,000  
                                 

Placement Agent Warrants:

                               

Beginning balance

    54,000       665,000       587,000       665,000  

Initial fair value of warrant liability – grant date(1)

    -       134,000       -       134,000  

Change in fair value

    -       (212,000 )     (533,000 )     (212,000 )

Subtotal - Fair value of warrant liability – Placement Agent Warrants

  $ 54,000     $ 587,000     $ 54,000     $ 587,000  
                                 

Total fair value of warrant liability(2)

  $ 71,000     $ 947,000     $ 71,000     $ 947,000  
Schedule of Warrants, Valuation Assumptions [Table Text Block]
   

September 30,

2025

   

December 31,

2024

   

September 30,

2024

 
                                 

Expected Volatility

    107% - 114%     101%     98%  

Risk–free interest rate

    3.60% - 3.68%     4.27% - 4.38%     4.21%  

Expected life of options (in years)

    1.96 - 3.98     2.71 - 4.74     3.89 - 4.47  
Dividends Declared [Table Text Block]

Series Designation

 

Date

 

Dividend

Shares

   

Fair Value

Shares

Issued (1)

 

Series A-5

 

February 4, 2025

    54     $ 1,000  

Series AA

 

April 28, 2025

    6,359       89,000  

Series AA-3

 

May 1, 2025

    66       1,000  

Series AA-4

 

May 21, 2025

    1,348       9,000  

Series AA-5

 

May 30, 2025

    118       1,000  

Series AAA / AAA-2

 

September 30, 2025 (Accrued)

    88,883       271,000  
          96,828     $ 372,000  

Series

Designation

  Date  

Dividend

Shares

   

Fair Value

Shares

Issued (1)

 

Series A-5

 

January 31, 2024

    55     $ 4,000  

Series AA

 

April 19, 2024

    11,907       661,000  
   

July 23, 2024

    3,972       216,000  

Series AA-3

 

April 29, 2024

    1,029       60,000  
   

July 23, 2024

    964       52,000  

Series AA-4

 

May 6, 2024

    1,388       77,000  
   

July 23, 2024

    41       2,000  

Series AA-5

 

May 30, 2024

    1,298       65,000  
   

July 23, 2024

    1,180       64,000  

Series AAA

 

July 23, 2024

    10,801       587,000  

Series AAA-2

 

July 23, 2024

    12,258       666,000  

Series AAA-Junior

 

July 26, 2024

    4,840       273,000  
   

August 26, 2024

    4,840       240,000  
   

September 24, 2024

    4,840       126,000  

Series AAA-Junior - 2

 

August 9, 2024

    2,204       97,000  
   

September 9, 2024

    2,204       100,000  
          63,821     $ 3,290,000