Company: APM
Filing Date: 2025-10-15
Form Type: 6-K
Source: 0001213900-25-099193
Chunk: 0

Company: Aptorum Group Ltd
Filing Date: 2025-10-15
Form: 6-K
Chunk 0
---
UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2025 Commission File Number: 001-38764 Aptorum Group Limited 17 Hanover Square London W1S 1BN, United Kingdom (Address of principal executive office) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F: Form 20-F ☒ Form 40-F ☐ EXPLANATORY NOTE As previously disclosed, Aptorum Group Limited, a Cayman Islands exempted company with limited liability (“Aptorum”, “APM,” “Aptorum Group” or the “Company”) and DiamiR Biosciences Corp., a Delaware corporation (“DiamiR”), entered into an Agreement and Plan of Merger on July 14, 2025, (the “Merger Agreement”), pursuant to which, among other matters, Aptorum will form a direct, wholly owned subsidiary in the state of Delaware (“Merger Sub”), which will merge with and into DiamR, with DiamiR surviving as a wholly owned subsidiary of Aptorum, and the surviving corporation of the merger with the Merger Sub (the “Merger”); i n addition to the requirement of obtaining Aptorum shareholder approval, the closing of the Merger is subject to the satisfaction or waiver of each of the other closing conditions set forth in the Merger Agreement. The Company is furnishing this Form 6-K to disclose and attach and incorporated by reference herein DiamiR’s financial statements for the quarter ended August 31, 2025 and its discussion and analysis of its financial condition and results of operations for that same period. This Form 6-K (including the exhibits hereto) is hereby incorporated by reference into the registration statements of the Company on Form S-8(Registration Number 333-232591) and Form F-3(Registration Number 333-268873) and into each prospectus outstanding under the foregoing registration statements, to be a part thereof from the date on which this report is submitted, to the extent not superseded by documents or reports subsequently filed or furnished by the Company under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended