Company: APM
Filing Date: 2025-07-15
Form Type: DRS
Source: 0001213900-25-063906
Chunk: 458

Company: Aptorum Group Ltd
Filing Date: 2025-07-15
Form: DRS
Chunk 458
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 2024 |     |  511,950 |   |     | $        | 4.66 |     | 6.5 years |
| Exercisable May 31, 2024 |     |  260,367 |   |     | $        | 4.93 |     | 5.0 years |

The weighted average grant -datefair value of stock options granted during the years ended May 31, 2024 and 2023 was $7.00 and $6.18, respectively, based on the following weighted average assumptions:

|                         |     | 2024 |   |     | 2023 |   |
| Expected term in years  |     |   10 |   |     |   10 |   |
| Expected volatility     |     |   81 | % |     |   81 | % |
| Risk-free interest rate |     |  4.1 | % |     |  3.1 | % |
| Expected dividend yield |     |    0 | % |     |    0 | % |

F-47

DIAMIR BIOSCIENCES CORP.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS NOTE 11 — STOCKHOLDERS’ EQUITY (cont.) In October 2023, the Company modified the terms of certain of its outstanding stock options representing an aggregate of 140,000shares. These modifications included a reduction in exercise prices from $7.01 per share to $0.01 per share and the addition of performance and vesting conditions, not currently considered probable of achievement, related to corporate transactions. In the year ended May 31, 2024, stock -basedcompensation expense amounted to $194,846, of which $182,912 is included in research and development expenses and $11,934 is included in general and administrative expenses. In the year ended May 31, 2023, stock -basedcompensation expense amounted to $966,214, of which $435,187 is included in research and development expenses and $531,027 is included in general and administrative expenses. As of May 31, 2024, unrecognized stock -basedcompensation expense related to options for which vesting is considered probable was $24,310, which is expected to be recognized over a remaining weighted -averageperformance period of 0.3 years. As of May 31, 2024, unrecognized stock -basedcomp