Aptorum Advances DiamiR Merger with Updated S-4 Filing and March 31 Form 6-K

An update from Aptorum Group ( (APM) ) is now available.

On March 31, 2026, Aptorum Group Limited reported via a Form 6-K that it is proceeding with its previously announced merger plan with U.S.-based DiamiR Biosciences Corp., under a July 14, 2025 Merger Agreement that will see a newly formed Delaware subsidiary of Aptorum merge into DiamiR, leaving DiamiR as a wholly owned subsidiary. The filing also noted that Aptorum had submitted Pre-Effective Amendment No. 2 to its Form S-4 proxy statement/prospectus to the SEC on March 30, 2026, incorporating updated financial statements and disclosure about both companies and the merger, and that this 6-K and its exhibits are now folded into the company’s existing shelf and employee-share registration statements, underscoring a key regulatory step toward completing the transaction once closing conditions, including shareholder approval, are met.

As part of the March 31, 2026 Form 6-K, Aptorum also referenced related merger documentation and consents from its auditors and advisers, signaling continued progress on the deal’s legal and accounting framework. The inclusion of Inline XBRL exhibits and auditor consents suggests the company is aligning its reporting and technical disclosure requirements in anticipation of the combined entity’s future financing and listing needs, a development that could reshape Aptorum’s corporate structure and capital-market profile once the merger closes.

The most recent analyst rating on (APM) stock is a Hold with a $0.90 price target. To see the full list of analyst forecasts on Aptorum Group stock, see the APM Stock Forecast page.

Spark’s Take on APM Stock

According to Spark, TipRanks’ AI Analyst, APM is a Neutral.

The score is primarily held down by weak financial performance—near-zero recent revenue, persistent losses, and sustained cash burn—despite a comparatively supportive balance sheet. Technicals are neutral-to-mixed with only modest near-term strength. Valuation is constrained by negative earnings and no provided dividend yield.

To see Spark’s full report on APM stock, click here.

More about Aptorum Group

Aptorum Group Limited is a Cayman Islands-incorporated company that files as a foreign private issuer in the United States and is listed under SEC file number 001-38764. The company operates through a principal executive office in London and is engaged in activities that require access to U.S. capital markets and the use of registration statements such as Forms S-4, S-8 and F-3.

Average Trading Volume: 65,419

Technical Sentiment Signal: Strong Sell

Current Market Cap: $6.83M

Find detailed analytics on APM stock on TipRanks’ Stock Analysis page.