| Schedule of warrant activity |
The following table summarizes PFW activity for the fiscal years ended June 30, 2026 and 2025: | | | | | | | | | | | | | 2021 | | 2022 | | Exchange | | 2024 | | 2025 | | | | PFWs | | PFWs | | PFWs | | PFWs | | PFWs | | Total | Outstanding, June 30, 2024 | 123,000 | (1) | 8,147,371 | (2) | 3,000,000 | (3) | 3,750,000 | (4) | — | | 15,020,371 | Issuance of 2025 PFWs in April 2025 | — | | — | | — | | — | | 6,905,385 | (5) | 6,905,385 | Cashless exercise of PFWs: | | | | | | | | | | | | Shares surrendered for exercise price | — | | (435) | (6) | (616) | (6) | — | | — | | (1,051) | Shares of common stock issued | — | | (2,525,883) | (7) | (2,999,384) | (7) | — | | — | | (5,525,267) | Outstanding, June 30, 2025 | 123,000 | | 5,621,053 | | — | | 3,750,000 | | 6,905,385 | | 16,399,438 | Cashless exercise of PFWs: | | | | | | | | | | | | Shares surrendered for exercise price | — | | (377) | (6) | — | | (248) | (6) | (496) | (6) | (1,121) | Shares of common stock issued | — | | (2,199,623) | (7) | — | | (1,874,752) | (7) | (4,149,504) | (7) | (8,223,879) | Outstanding, June 30, 2026 | 123,000 | | 3,421,053 | | — | | 1,875,000 | | 2,755,385 | | 8,174,438 |
| (1) | Issued in connection with an underwritten offering in October 2021 at an issuance price of $6.49 per share (the “2021 PFWs”). The exercise price of the 2021 PFWs is $0.01 per share. |
| (2) | Issued in connection with a registered direct offering in May 2022 at an issuance price of $3.799 per warrant (the “2022 PFWs”). The exercise price of the 2022 PFWs is $0.001 per share. |
| (3) | Issued in connection with a securities exchange agreement in March 2024 (the “Exchange PFWs”). The exercise price of the Exchange PFWs was $0.001 per share. |
| (4) | Issued in connection with an underwritten offering in June 2024 at an issuance price of $3.999 per share (the “2024 PFWs”). The exercise price of the 2024 PFWs is $0.001 per share. |
| (5) | As discussed below under the caption 2025 Underwritten Offering, the Company issued 2025 PFWs for the purchase of 6,905,385 shares of common stock on April 24, 2025. The exercise price of the 2025 PFWs is $0.001 per share. |
| (6) | Holder of PFWs provided notice of cashless exercise that resulted in cancellation of shares in lieu of paying the exercise price in cash. |
| (7) | Represents the number of shares issued after giving effect to shares surrendered due to the cashless exercise notification by the holder. |
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