Company: APM
Filing Date: 2025-07-15
Form Type: DRS
Source: 0001213900-25-063906
Chunk: 455

Company: Aptorum Group Ltd
Filing Date: 2025-07-15
Form: DRS
Chunk 455
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 $105,178 and $95,481 as of May 31, 2024 and 2023, respectively. Grantor As of May 31, 2022, the Company had a convertible note (“ADDF Note”) outstanding to the Alzheimer’s Drug Discover Foundation (“ADDF”) with a principal amount of $492,000, with principal and interest due and payable in November 2022. The ADDF Note provided for interest at 8% per annum, compounded monthly and was convertible, at the option of the holder upon maturity, upon a qualified equity or debt financing of at least $2,000,000, as defined, or at maturity provided the Company’s business plan meets certain conditions. Concurrent with the issuance of the ADDF Note, the Company issued warrants to the grantor for 29,336shares of the Company’s common stock at an exercise price of $5.87 per share. The warrants have a five -yearlife. The warrants had an estimated fair value at issuance of $125,289, which was recorded as additional paid -incapital and represented a discount on the Note. The discount was amortized on the interest method over the three -yearterm of the Note at an effective rate of 19%. In the year ended May 31, 2023, the ADDF Note, amounting to $606,662, including accrued interest, was converted in accordance with its terms into 101,806shares of common stock. Interest expense Interest expense consists of the following in the years ended May 31:

|                          |     |   |   2024 |     |   |    2023 |
|:-------------------------|:----|:--|-------:|:----|:--|--------:|
| Interest on notes        |     | $ | 23,232 |     | $ |  44,531 |
| Amortization of discount |     |   | 25,367 |     |   |  69,644 |
| Total                    |     | $ | 48,599 |     | $ | 114,175 |

F-45

DIAMIR BIOSCIENCES CORP.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS NOTE 9 — LEASES As of May 31, 2022, the Company had a lease for laboratory space with a term of one year and a one -yearCompany renewal option. The Company renewed the lease on a one -yearbasis in each of