Company: APM
Filing Date: 2025-12-05
Form Type: 424B5
Source: 0001213900-25-118752
Chunk: 421

Company: Aptorum Group Ltd
Filing Date: 2025-12-05
Form: 424B5
Chunk 421
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 |                                 | -          |   |     |                         |          - |   |     |       |     |           |  2,621,977 |
| Income taxes payable                  |     |                   |          - |     |                  |   176,002 |     |                      |         - |     |        |     |                                 | -          |   |     |                         |          - |   |     |       |     |           |    176,002 |
| Other liabilities                     |     |                   |          - |     |                  |    22,698 |     |                      |         - |     |        |     |                                 | -          |   |     |                         |          - |   |     |       |     |           |     22,698 |
| Convertibles notes to a related party |     |                   |  3,328,500 |     |                  |   957,662 |     |                      |         - |     |        |     |                                 | (4,286,162 | ) |     |                         |          - |   |     |       |     |           |          - |
| Total Liabilities                     |     |                   |  4,335,942 |     |                  | 1,473,585 |     |                      | 1,297,312 |     |        |     |                                 | (4,286,162 | ) |     |                         |          - |   |     |       |     |           |  2,820,677 |

<div align='center'>241

UNAUDITED PRO FORMA CONDENSED COMBINED STATEMENT OF FINANCIAL POSITION — (Continued)
AS OF JUNE 30, 2025
(In U.S. dollars except share and per share data)</div>

|                                                                                                                                                                                           |     | Aptorum 6/30/2025 |             |   |     | DiamiR 5/31/2025 |            |   |     | Offering Transaction 
 accounting           
 adjustments          |           |   |     | Notes  |     | Conversion of notes payable (c) |           |     | Acquisition Transaction 
 accounting              
 adjustments             |            |   |     | Notes      |     | Pro Forma 
 Combined  |             |   |
| Preferred Stock ($0.00001 par value, 1,796,934 shares authorized, 0 shares issued and outstanding as of June 30, 202