Company: APM
Filing Date: 2025-10-06
Form Type: S-4
Source: 0001213900-25-096656
Chunk: 432

Company: Aptorum Group Ltd
Filing Date: 2025-10-06
Form: S-4
Chunk 432
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 of the combined company. Each Aptorum Class B Ordinary Share is exchanged for one share of common stock of the combined company and one share of preferred stock. DiamiR’s historical stockholder equity balances are eliminated. (b)The adjustment represents the estimated transaction costs of the Acquisition, including legal and professional fees directly attributable to the Acquisition and settled in cash, as well as warrants to be issued to Wainwright upon consummation of the Merger that have a fair value of approximately $500,000 and are currently presumed to be classified within stockholders’ equity. (c)Convertible notes due to shareholders are to be converted into common stock. (d)Reflects the automatic conversion in connection with the Domestication of 1,796,934 Aptorum Class B Ordinary Shares into 1,796,934shares of common stock of Aptorum Delaware and 1,796,934shares of Series A preferred stock of Aptorum Delaware. (e)Pro forma shares of common stock outstanding include:

| Aptorum Class A Ordinary Shares at June 30, 2025 that were converted into 
 common stock                                                              |     |  5,346,823 |
| Conversion of Aptorum Class B Ordinary Shares into common stock           |     |  1,796,934 |
| Conversion of note payable into common stock                              |     |  1,338,223 |
| Exercise of warrants                                                      |     |     54,054 |
| Issuance of common stock to DiamiR shareholders in merger                 |     | 19,917,413 |
| Pro Forma Common Stock Outstanding at June 30, 2025                       |     | 28,453,447 |

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Other than the above adjustments, no adjustments have been made to reflect any results of operations or other transactions entered into subsequent to June30, 2025. Unless otherwise stated, the adjustments above do not have a recurring effect. (f)Represents interest expense related to convertible notes to be converted into shares of common stock of Aptorum Delaware. (g)Weighted average shares outstanding on a pro forma basis includes:

| Aptorum Class A Ordinary Shares at June 30, 2025                |     |  5,346,823 |
| Conversion of Aptorum Class B Ordinary Shares into common stock |     |  1,796,934 |
| Conversion of note payable into common stock                    |     |  1,338,223 |
| Exercise of warrants                                            |     |