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

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' DEFICIENCY

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' DEFICIENCY - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Increase (Decrease) in Stockholders' Equity (Deficiency)    
Beginning balance $ (14,646) $ (24,095)
Beginning balance, treasury stock (in shares) 0  
Purchase of treasury stock $ (46)  
Vested restricted stock units   (1)
Cancellation of Capstone Green Energy Corporation stock   (18)
Stock-based compensation 262 2,057
Net Income (Loss) (7,190) 7,392
Ending balance $ (21,620) $ (14,646)
Ending balance, treasury stock (in shares) 57,202 0
Voting Common Stock    
Increase (Decrease) in Stockholders' Equity (Deficiency)    
Beginning balance (in shares) 18,540,789  
Issuance of common stock   $ 18
Ending balance (in shares) 18,643,587 18,540,789
Non-Voting Common Stock    
Increase (Decrease) in Stockholders' Equity (Deficiency)    
Issuance of common stock   $ 1
Ending balance (in shares) 508,475  
Common Stock | Voting Common Stock    
Increase (Decrease) in Stockholders' Equity (Deficiency)    
Beginning balance $ 18 $ 18
Beginning balance (in shares) 18,540,789 18,511,555
Purchase of treasury stock (in shares) (57,202)  
Vested restricted stock units (in shares) 160,000 61,474
Stock awards to Board of Directors (in shares)   97,275
Cancellation of Capstone Green Energy Corporation stock   $ (18)
Cancellation of Capstone Green Energy Corporation stock (in shares)   (18,670,392)
Issuance of common stock   $ 18
Issuance of common stock (in shares)   18,540,877
Ending balance $ 18 $ 18
Ending balance (in shares) 18,643,587 18,540,789
Common Stock | Non-Voting Common Stock    
Increase (Decrease) in Stockholders' Equity (Deficiency)    
Beginning balance $ 1 $ 0
Beginning balance (in shares) 508,475 0
Issuance of common stock   $ 1
Issuance of common stock (in shares)   508,475
Ending balance $ 1 $ 1
Ending balance (in shares) 508,475 508,475
Additional Paid-in Capital    
Increase (Decrease) in Stockholders' Equity (Deficiency)    
Beginning balance $ 955,145 $ 955,228
Vested restricted stock units   14
Cancellation of Capstone Green Energy Corporation stock   (2,154)
Stock-based compensation 262 2,057
Ending balance 955,407 955,145
Accumulated Deficit    
Increase (Decrease) in Stockholders' Equity (Deficiency)    
Beginning balance (969,810) (977,202)
Net Income (Loss) (7,190) 7,392
Ending balance (977,000) (969,810)
Treasury Stock    
Increase (Decrease) in Stockholders' Equity (Deficiency)    
Beginning balance $ 0 $ (2,139)
Beginning balance, treasury stock (in shares) 0 117,014
Purchase of treasury stock $ (46)  
Purchase of treasury stock (in shares) 57,202  
Vested restricted stock units   $ (15)
Vested restricted stock units (in shares)   12,501
Cancellation of Capstone Green Energy Corporation stock   $ 2,154
Cancellation of Capstone Green Energy Corporation stock (in shares)   (129,515)
Ending balance $ (46) $ 0
Ending balance, treasury stock (in shares) 57,202 0