Quarterly report [Sections 13 or 15(d)]

Segment Information (Details)

v3.25.4
Segment Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Nov. 30, 2025
Aug. 31, 2025
Nov. 30, 2024
Aug. 31, 2024
Nov. 30, 2025
Nov. 30, 2024
Operating expenses:            
Legal settlement loss $ 16,587       $ 16,587  
Total operating expenses 21,688   $ 3,707   26,633 $ (18,730)
Operating (loss) gain (21,688)   (3,707)   (26,633) 18,730
Interest income 57   142   151 268
Interest on convertible notes (644)   (1,161)   $ (1,320) (2,326)
Amortization of discount on convertible notes     (113)     (238)
Number of reportable segments not disclosed         true  
Loss on induced conversion           (1,180)
Finance charges (7)   (9)   $ (20) (23)
Gain on restructuring of payables     80     80
Loss on derivatives           (852)
Provision (benefit) for income taxes 0   0   0 0
Net (loss) income (22,607) $ (5,540) (4,768) $ 19,227 (28,147) 14,459
Share based compensation recognized in general and administrative expense 100   300   200 500
Share based compensation recognized in research and development expense 100   200   200 200
Single reporting segment            
Operating expenses:            
Net (loss) income (22,607)   (4,768)   (28,147) 14,459
Single reporting segment | Operating segment            
Operating expenses:            
General and administrative expense 1,706   1,978   3,329 3,451
Research and development 3,212   1,192   6,355 2,131
Return of clinical expenses           (24,985)
Legal settlement loss 16,587       16,587  
Stock-based compensation expense 183   537   362 673
Total operating expenses 21,688   3,707   26,633 (18,730)
Operating (loss) gain (21,688)   (3,707)   (26,633) 18,730
Interest income 57   142   151 268
Interest on convertible notes (644)   (1,161)   (1,320) (2,326)
Amortization of discount on convertible notes     (113)     (238)
Amortization of debt issuance costs (325)       (325)  
Loss on induced conversion           (1,180)
Finance charges (7)   (9)   (20) (23)
Gain on restructuring of payables     80     80
Loss on derivatives           (852)
Net (loss) income $ (22,607)   $ (4,768)   $ (28,147) $ 14,459