Company: APM
Filing Date: 2025-10-16
Form Type: 6-K
Source: 0001213900-25-099575
Chunk: 1

Company: Aptorum Group Ltd
Filing Date: 2025-10-16
Form: 6-K
Chunk 1
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 agreed, among other things,
not to sell or dispose of any Ordinary Shares which are or will be beneficially owned by them for thirty (30) days following the closing
of the Offering.

The Company currently intends to use the net proceeds from the Offering
for working capital and general corporate use. Additionally, some of the proceeds from the Offering will be used to fund expenses expected to be incurred in connection with the previously announced merger between the Company and DiamiR Biosciences Corp. and for general working capital of the two companies pending anticipated closing of the merger, which is subject to several closing conditions and therefore may never occur.The Offering closed on October 14, 2025.

H.C. Wainwright & Co., LLC, acted as the
exclusive placement agent (the “Placement Agent”), in connection with the Offering. The Company agreed to pay the
Placement Agent an aggregate fee equal to 7.0% of the gross proceeds raised in the Offering. The Company will also pay the Placement
Agent a management fee equal to 1.0% of the gross proceeds raised in the Offering, $5,000 for non-accountable expenses, up to
$50,000 for expenses of legal counsel and other out-of-pocket expenses and $10,000 for clearing fees all associated with the
Offering. After deducting fees due to the Placement Agent and our estimated offering expenses, we expect the net proceeds from the
Offering to be approximately US$1.725 million.

Copies of the form of the Purchase Agreement,
form of Restricted Warrant, and form of Lock-Up Agreement are attached hereto as Exhibits 99.1, 99.2, and 99.3, respectively, and are
incorporated herein by reference. The foregoing summaries of the terms of the Purchase Agreement, Restricted Warrants, and Lock-Up Agreement
are subject to, and qualified in their entirety by, such documents.

On October 10, 2025, the Company issued a press
release announcing the Offering. A copy of the press release is attached hereto as Exhibit 99.6 and is incorporated herein by reference.
A copy of the legal opinion issued by the Company’s Cayman Islands counsel Campbells is attached hereto as Exhibit 5.1.

| Exhibit No. |     | Description                    |
| 5.1         |     | Legal Opinion of Campbells     |
| 99.1        |     | Form of the Purchase Agreement |
| 99.