| Schedule of reconciliation to the consolidated net income (loss) |  
|  |  |  |  |  |  |  |  
|  |  | Years ended May 31, |  
| (in thousands, except for per share data) |      | 2025 |      | 2024 |  
| Expenses(1): |  |    |  |  |  |  
| General and administrative expense(2) |  | $ |  6,434 |   | $ |  8,403 |  
| Research and development(3) |  |   |  7,278 |   |   |  7,240 |  
| Return of clinical expenses |  |  |  (24,985) |  |  |  — |  
| Stock-based compensation expense |  |  |  1,612 |  |  |  2,415 |  
| Operating gain (loss) |  |  |  9,661 |  |  |  (18,058) |  
|  |  |  |  |  |  |  |  
| Interest income |  |  |  565 |  |  |  217 |  
| Interest on convertible notes |  |  |  (4,424) |  |  |  (4,659) |  
| Amortization of discount on convertible notes |  |  |  (407) |  |  |  (1,076) |  
| Amortization of debt issuance costs |  |  |  — |  |  |  (572) |  
| Issuance costs for private placement of shares and warrants through placement agent |  |  |  — |  |  |  (2,819) |  
| Loss on induced conversion |  |  |  (1,180) |  |  |  (6,680) |  
| Finance charges |  |  |  (25) |  |  |  (2,584) |  
| Loss on note extinguishment |  |  |  — |  |  |  (13,374) |  
| Gain on restructuring of payables |  |  |  407 |  |  |  — |  
| Loss on derivatives |  |  |  (852) |  |  |  (236) |  
| Provision (benefit) for income taxes |  |  |  — |  |  |  — |  
| Segment net income (loss) |  |  |  3,745 |  |  |  (49,841) |  
| Reconciliation of profit or loss: |  |  |  |  |  |  |  
| Adjustments or reconciling items |  |  |  — |  |  |  — |  
| Consolidated net income (loss) |  |  |  3,745 |  |  |  (49,841) |  
|  | (1) | The significant expense categories and amounts align with the segment-level information that is regularly provided to the CODM. | 
 (2) General and administrative expense for the years ended May 31, 2025, and 2024 is net of $0.8 million and $2.4 million of stock-based compensation expense, respectively. (3) Research and development expense for the year ended May 31, 2025 is net of $0.8 million of stock-based compensation expense. No stock-based compensation was part of research and development expense for the year ended May 31, 2024. For the year ended May 31, 2025, research and development expense is net of $25.0 million return of clinical expenses due to the settlement with Amarex. See Note 9, Commitments and Contingencies – Legal Proceedings – Settlement of Amarex Dispute for additional discussion. |