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Note 16 - Warrants (Tables) | 12 Months Ended
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Jun. 30, 2025
Notes Tables |
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Remaining |  |  |  |
|  | Number |  |  |  |  |  |  | Contractual |  |  |  |
Description |  | Outstanding |  |  | Exercise Price |  |  | Life in Years (7) |  | Type |  | Classification
December 2020 Warrants (1) |  |  | 15,571 |  |  | $ | 150.00 |  |  |  | 0.5 |  | Warrant |  | Equity
January 2022 Warrants (1) |  |  | 122,092 |  |  | $ | 8.60 |  |  |  | 1.6 |  | Warrant |  | Liability
March 2022 Warrants (1) |  |  | 333,300 |  |  | $ | 26.00 |  |  |  | 2.2 |  | Warrant |  | Liability
August 2022 Warrants (1) |  |  | 1,191,811 |  |  | $ | 2.32 |  |  |  | 2.1 |  | Warrant |  | Liability
June 2023 Tranche A Warrants (2) |  |  | 2,173,912 |  |  | $ | 1.59 |  |  |  | 3.0 |  | Warrant |  | Liability
June 2023 Tranche B Prefunded Warrants (3) |  |  | 1,630,434 |  |  | $ | 0.0001 |  |  |  | N/A |  | Prefunded Warrant |  | Liability
June 2023 Prefunded Warrants (4) |  |  | 430,217 |  |  | $ | 0.0001 |  |  |  | N/A |  | Prefunded Warrant |  | Liability
June 2025 Prefunded Warrants (5)(6) |  |  | 8,233,332 |  |  | $ | 0.0001 |  |  |  | N/A |  | Prefunded Warrant |  | Liability
Total outstanding June 30, 2025 (6) |  |  | 14,130,669 |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  |  |  | Weighted- |
|  |  |  |  |  |  |  | Average |
|  |  |  |  | Weighted- |  |  | Remaining |
|  | Number of |  |  | Average |  |  | Contractual |
|  | Warrants |  |  | Exercise Price |  |  | Life in Years |
Outstanding June 30, 2024 (1) |  |  | 3,839,229 |  |  | $ | 4.95 |  |  |  | 3.6 |
Warrants expired |  |  | (2,543 | ) |  |  | N/A |  |  |  | N/A |
Outstanding June 30, 2025 (2) |  |  | 3,836,686 |  |  | $ | 4.76 |  |  |  | 2.6 |
|  | Number of |  |  | Weighted- |
|  | Prefunded |  |  | Average |
|  | Warrants |  |  | Exercise Price |
Outstanding June 30, 2024 |  |  | 2,236,651 |  |  | $ | 0.0001 |
Prefunded warrants issued (1)(2) |  |  | 8,233,332 |  |  | $ | 0.0001 |
Prefunded warrants exercised |  |  | (176,000 | ) |  | $ | 0.0001 |
Outstanding June 30, 2025 (2) |  |  | 10,293,983 |  |  | $ | 0.0001 |

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- Definition Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-3 + Details
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