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Note 10 - Investments in Affiliates and Controlled Investments (Tables)
12 Months Ended
Dec. 31, 2025
Notes Tables  
Investments in and Advances to Affiliates [Table Text Block]

AFFILIATE/CONTROLLED INVESTMENTS*

 

VALUE AT
12/31/24

  

PURCHASE/
MERGER

  

INTEREST

  

SALES/
MATURITY/
EXPIRATION

  

REALIZED
GAIN (LOSS)

  

CHANGE IN APPRECIATION/
DEPRECIATION

  

VALUE
12/31/25

  

SHARES HELD AT
12/31/25

 

Equipment Leasing

                                

EQX Capital, Inc. Common Stock*

 $  $  $  $  $(20,000) $20,000  $    

EQX Capital, Inc. Series A Preferred Stock*

  29,466         (8,623)  (1,921,377)  1,900,534       

Total Equipment Leasing

 $29,466      $   (8,623) $(1,941,377) $1,920,534  $    
Aerospace                                
Hera Systems, Inc. Convertible Note*           (11,116)  11,116          
Hera Systems, Inc. Series C Preferred*           (156,362)  156,362          
Total Aerospace           (167,478)  167,478          

Medical Devices

                                

IntraOp Medical Corp. Convertible Note*

  9,966               (9,366)  600   10,961,129 

IntraOp Medical Corp. Convertible Note*

  1,182               (1,111)  71   1,300,000 

IntraOp Medical Corp. Convertible Note*

  454               (426)  28   500,000 

IntraOp Medical Corp. Convertible Note*

  455               (427)  28   500,000 

IntraOp Medical Corp. Convertible Note*

  682               (641)  41   750,000 

IntraOp Medical Corp. Convertible Note*

  455               (427)  28   500,000 

IntraOp Medical Corp. Convertible Note*

  909               (854)  55   1,000,000 

IntraOp Medical Corp. Convertible Note*

  454               (426)  28   500,000 

IntraOp Medical Corp. Convertible Note*

  364               (342)  22   400,000 

IntraOp Medical Corp. Term Note*

  2,728               (2,564)  164   3,000,000 

IntraOp Medical Corp. Convertible Note*

  455               (428)  27   500,000 

IntraOp Medical Corp. Convertible Note*

  909               (854)  55   1,000,000 

IntraOp Medical Corp. Convertible Note*

  455               (428)  27   500,000 

IntraOp Medical Corp. Convertible Note*

  455               (428)  27   500,000 

IntraOp Medical Corp. Convertible Note*

  909               (854)  55   1,000,000 

IntraOp Medical Corp. Convertible Note*

  455               (428)  27   500,000 

IntraOp Medical Corp. Convertible Note*

  455               (428)  27   500,000 

IntraOp Medical Corp. Convertible Note*

  455               (428)  27   500,000 

IntraOp Medical Corp. Convertible Note*

  182               (171)  11   200,000 

IntraOp Medical Corp. Convertible Note*

  636               (598)  38   700,000 

IntraOp Medical Corp. Convertible Note*

  136               (128)  8   150,000 

IntraOp Medical Corp. Convertible Note*

  318               (299)  19   350,000 

AFFILIATE/CONTROLLED INVESTMENTS*

 

VALUE AT
12/31/24

  

PURCHASE/
MERGER

  

INTEREST

  

SALES/
MATURITY/
EXPIRATION

  

REALIZED
GAIN (LOSS)

  

CHANGE IN APPRECIATION/
DEPRECIATION

  

VALUE
12/31/25

  

SHARES HELD AT
12/31/25

 

IntraOp Medical Corp. Series C Preferred Stock*

 $  $  $     $  $  $   26,856,187 

IntraOp Medical Corp. Term Note*

  1,818               (1,708)  110   2,000,000 

Total Medical Devices

 $25,287     $     $  $(23,764) $1,523    

Semiconductor Equipment

                                

Revasum, Inc. CDIs*(1)

                       39,774,889 

Total Semiconductor Equipment

 $     $     $     $    

Advanced Materials

                                

UCT Coatings, Inc. Common Stock

  260,497               (92,855)  167,642   1,500,000 

Total Advanced Materials

 $260,497     $     $  $(92,855) $167,642    

Automotive

                                

Wrightspeed, Inc. Convertible Note*

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

Wrightspeed, Inc. Convertible Note*

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

Wrightspeed, Inc. Convertible Note*

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

Wrightspeed, Inc. Convertible Note*

              (200,000)  200,000       

Wrightspeed, Inc. Convertible Note*

              (185,000)  185,000       

Wrightspeed, Inc. Convertible Note*

              (65,000)  65,000       

Wrightspeed, Inc. Convertible Note*

              (250,000)  250,000       

Wrightspeed, Inc. Convertible Note*

              (250,000)  250,000       

Wrightspeed, Inc. Convertible Note*

              (2,000,000)  2,000,000       

Wrightspeed, Inc. Convertible Note*

              (250,000)  250,000       

Wrightspeed, Inc. Convertible Note*

              (250,000)  250,000       

Wrightspeed, Inc. Convertible Note*

              (250,000)  250,000       

Wrightspeed, Inc. Convertible Note*

              (250,000)  250,000       

Wrightspeed, Inc. Convertible Note*

              (135,000)  135,000       

Wrightspeed, Inc. Convertible Note*

              (165,000)  165,000       

Wrightspeed, Inc. Convertible Note*

              (40,000)         

Wrightspeed, Inc. Convertible Note*

              (700,000)  700,000       

Wrightspeed, Inc. Convertible Note*

              (300,000)  300,000       

AFFILIATE/CONTROLLED INVESTMENTS*

 

VALUE AT
12/31/24

  

PURCHASE/
MERGER

  

INTEREST

  

SALES/
MATURITY/
EXPIRATION

  

REALIZED
GAIN (LOSS)

  

CHANGE IN APPRECIATION/
DEPRECIATION

  

VALUE
12/31/25

  

SHARES HELD AT
12/31/25

 

Wrightspeed, Inc. Convertible Note*

 $  $  $     $(1,000,000) $1,000,000  $    

Wrightspeed, Inc. Convertible Note*

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

Wrightspeed, Inc. Convertible Note*

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

Wrightspeed, Inc. Convertible Note*

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

Wrightspeed, Inc. Convertible Note*

              (1,200,000)  1,200,000       

Wrightspeed, Inc. Convertible Note*

              (1,400,000)  1,400,000       

Wrightspeed, Inc. Convertible Note*

              (250,000)  250,000       

Wrightspeed, Inc. Convertible Note*

              (400,000)  400,000       

Wrightspeed, Inc. Convertible Note*

              (375,000)  375,000       

Wrightspeed, Inc. Convertible Note*

              (400,000)  400,000       

Wrightspeed, Inc. Convertible Note*

              (1,050,000)  1,050,000       

Wrightspeed, Inc. Convertible Note*

              (900,000)  900,000       

Wrightspeed, Inc. Convertible Note*

              (750,000)  750,000       

Wrightspeed, Inc. Convertible Note*

              (4,929,015)  4,929,015       

Wrightspeed, Inc. Convertible Note*

              (125,000)  125,000       

Wrightspeed, Inc. Convertible Note*

              (100,000)  100,000       

Wrightspeed, Inc. Common Stock*

                       69,102 

Wrightspeed, Inc. Series AA Preferred Stock*

                       60,733,693 

Total Automotive

 $     $     $(24,169,015) $24,129,015  $     

Total Affiliates and Controlled Investments

 $315,250      $  $(176,101) $(25,942,914) $25,932,930  $169,165    

Total Affiliates

  260,497                 (92,855)  167,642    

Total Controlled Investments

 $54,753      $  $(176,101) $(25,942,914) $26,025,785  $1,523    

AFFILIATE/CONTROLLED INVESTMENTS*

 

VALUE AT
12/31/23

  

PURCHASE/
MERGER

  

INTEREST

  

SALES/
MATURITY/
EXPIRATION

  

REALIZED
GAIN (LOSS)

  

CHANGE IN APPRECIATION/
DEPRECIATION

  

VALUE
12/31/24

  

SHARES HELD AT
12/31/24

 

Equipment Leasing

                                

EQX Capital, Inc. Common Stock*

 $55  $-  $-  $-  $-  $(55  $-   100,000 

EQX Capital, Inc. Series A Preferred Stock*

  110,172   -   -   (20,000)  -   (60,706)  29,466   1,930,000 

Total Equipment Leasing

 $110,227      $-      $-  $(60,761) $29,466     

Aerospace

                                

Hera Systems, Inc. Convertible Note*

  3,431,683   -   -   (4,866,666)  (493,125)  1,928,108   -   - 

Hera Systems, Inc. Convertible Note*

  768,317   -   80,000   (1,089,594)  (110,406)  431,683   -   - 

Hera Systems, Inc. Series A Preferred*

  -   -   -   (4)  (1,999,996)  2,000,000   -   - 

Hera Systems, Inc. Series B Preferred*

  -   2,441   -   (144,249)  (6,445,294)  6,587,102   -   - 

Hera Systems, Inc. Series B Warrants*

  -   -   -   -   -   -   -   - 

Hera Systems, Inc. Series B Warrants*

  -   -   -   -   -   -   -   - 

Hera Systems, Inc. Series B Warrants*

  -   -   -   -   -   -   -   - 

Hera Systems, Inc. Series B Warrants*

  -   -   -   -   -   -   -   - 

Hera Systems, Inc. Series C Preferred*

  -   -   -   (12,153   (2,637,847)  2,650,000   -   - 

Total Aerospace

 $4,200,000      $80,000      $(11,686,668) $13,596,893  $-     

Medical Devices

                                

IntraOp Medical Corp. Convertible Note*

  34,570   -   -   -   -   (24,604)  9,966   10,961,129 

IntraOp Medical Corp. Convertible Note*

  4,100   -   -   -   -   (2,918)  1,182   1,300,000 

IntraOp Medical Corp. Convertible Note*

  1,577   -   -   -   -   (1,123)  454   500,000 

IntraOp Medical Corp. Convertible Note*

  1,577   -   -   -   -   (1,123)  454   500,000 

IntraOp Medical Corp. Convertible Note*

  3,154   -   -   -   -   (2,245)  909   1,000,000 

IntraOp Medical Corp. Convertible Note*

  1,261   -   -   -   -   (897)  364   400,000 

IntraOp Medical Corp. Convertible Note*

  1,577   -   -   -   -   (1,122)  455   500,000 

IntraOp Medical Corp. Convertible Note*

  2,365   -   -   -   -   (1,683)  682   750,000 

IntraOp Medical Corp. Convertible Note*

  1,577   -   -   -   -   (1,122)  455   500,000 

IntraOp Medical Corp. Convertible Note*

  1,577   -   -   -   -   (1,122)  455   500,000 
AFFILIATE/CONTROLLED INVESTMENTS* VALUE AT
12/31/23
  PURCHASE/
MERGER
  INTEREST  SALES/
MATURITY/
EXPIRATION
  REALIZED
GAIN (LOSS)
  CHANGE IN APPRECIATION/
DEPRECIATION
  VALUE
12/31/24
  SHARES HELD AT
12/31/24
 

IntraOp Medical Corp. Convertible Note*

 $1,577  $-  $-  $-  $-  $(1,122) $455   500,000 

IntraOp Medical Corp. Convertible Note*

  3,154   -   -   -   -   (2,245)  909   1,000,000 

IntraOp Medical Corp. Convertible Note*

  1,577   -   -   -   -   (1,122)  455   500,000 

IntraOp Medical Corp. Convertible Note*

  1,577   -   -   -   -   (1,122)  455   500,000 

IntraOp Medical Corp. Convertible Note*

  1,577   -   -   -   -   (1,122)  455   500,000 

IntraOp Medical Corp. Convertible Note*

  631   -   -   -   -   (449)  182   200,000 

IntraOp Medical Corp. Convertible Note*

  2,208   -   -   -   -   (1,572)  636   700,000 

IntraOp Medical Corp. Convertible Note*

  473   -   -   -   -   (337)  136   150,000 

IntraOp Medical Corp. Convertible Note*

  1,104   -   -   -   -   (786)  318   350,000 

IntraOp Medical Corp. Convertible Note*

  3,154                   (2,245)  909   1,000,000 

IntraOp Medical Corp. Convertible Note*

  1,577                   (1,122)  455   500,000 

IntraOp Medical Corp. Series C Preferred*

  -   -   -   -   -   -   -   26,856,187 

IntraOp Medical Corp. Term Note*

  6,308   -   -   -   -   (4,490)  1,818   2,000,000 

IntraOp Medical Corp. Term Note*

  9,461   -   -   -   -   (6,733)  2,728   3,000,000 

Total Medical Devices

 $87,713      $-      $-  $(62,426) $25,287     

Semiconductor Equipment

                                

Revasum, Inc. CDI*(1)

  3,862,405   -   -   -   -   (3,862,405)  -   39,774,889 

Total Semiconductor Equipment

 $3,862,405      $-   -  $-  $(3,862,405) $-     

Advanced Materials

                                

UCT Coatings, Inc. Common Stock

  299,932   -   -   -   -   (39,435)  260,497   1,500,000 

Total Advanced Materials

 $299,932      $-      $-  $(39,435) $260,497     

Automotive

                                

Wrightspeed, Inc. Common Stock*

  -   -   -   -   -   -   -   69,102 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   200,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   250,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   100,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   125,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   165,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   135,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   250,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   250,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   1,000,000 

AFFILIATE/CONTROLLED INVESTMENTS*

 

VALUE AT
12/31/23

  

PURCHASE/
MERGER

  

INTEREST

  

SALES/
MATURITY/
EXPIRATION

  

REALIZED
GAIN (LOSS)

  

CHANGE IN APPRECIATION/
DEPRECIATION

  

VALUE
12/31/24

  

SHARES HELD AT
12/31/24

 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   250,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   1,000,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   700,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   250,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   250,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   250,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   65,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   185,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   1,000,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   1,000,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   1,000,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   300,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   400,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   2,000,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   1,400,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   1,200,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   1,000,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   250,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   1,000,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   1,050,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   400,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   375,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   900,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   750,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   4,929,015 

Wrightspeed, Inc. Convertible Note*

  -   -   -   -   -   -   -   1,000,000 

Wrightspeed, Inc. Convertible Note*

  -   -   -   (40,000)  -   40,000   -   - 

AFFILIATE/CONTROLLED INVESTMENTS*

 

VALUE AT
12/31/23

  

PURCHASE/
MERGER

  

INTEREST

  

SALES/
MATURITY/
EXPIRATION

  

REALIZED
GAIN (LOSS)

  

CHANGE IN APPRECIATION/
DEPRECIATION

  

VALUE
12/31/24

  

SHARES HELD AT
12/31/24

 

Wrightspeed, Inc. Series AA Preferred*

 $-  $-  $-  $-  $-  $-  $-   60,733,693 

Total Automotive

 $-      $-      $-  $40,000  $-     

Total Affiliates and Controlled Investments

 $8,560,277      $80,000     $(11,686,668) $9,611,866  $315,250     

Total Affiliates

  299,932       -       -   (39,435)  260,497     

Total Controlled Investments

 $8,260,345     $80,000     $(11,686,668) $9,651,301  $54,753