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DiamiR Biosciences Corp.

private/Aptorum Group LimitedAPM

Aptorum Group to Merge with DiamiR Biosciences; Combined Company to Be Niki BioSolutions

StockDefinitive Proxyhigh confidence

Key takeaways

  • Expected close: Jun 30, 2026.

Merger Arbeconomics, downside, days

Deal value

stock

Per-share offer

Premium

Days to close

17d overdue

Jun 30, 2026

Term fee

ConsiderationStock
AnnouncedApr 24, 2026
Days outstanding84d
Expected closeJun 30, 2026
Termination fee
Reverse term fee
Go-shop period
Fiduciary out
Financing condition
Debt commitment
Insider lock-up

Timelineannounced → close
  1. Announced

    Apr 24, 2026

  2. Preliminary Proxy

  3. Definitive Proxy

  4. Record date

  5. Shareholder vote

  6. Expected close

    Jun 30, 2026


Vote Mechanicsrecord / mailing / vote
Vote required
Vote date
Record date
Mailing date
Record → vote
Thresholdordinary resolution
Min approvalparsed
Shares outstanding
Insider lock-up

Regulatory & ConditionsHSR / EU / CFIUS / MAC

No regulatory or closing-conditions data extracted yet. The merger agreement Exhibit 10.1 contains this in the “Conditions to Closing” and “Regulatory Approvals” articles.


Closing Conditionsapprovals · vote · financing · lockups

No closing-condition data extracted.


Interloper Riskcompeting bids, activist filers

No competing-bidder, activist, or dissident-proxy signals in the database for this target.


Advisors

Acquirer side· Aptorum Group Limited

Legal

Hunter Taubman Fischer & Li LLC

  • · Louis Taubman
Copies of all communications, including communications sent to agent for service, should be sent to: Louis Taubman, Esq. Hunter Taubman Fischer & Li LLC 950 Third Avenue, 19th Floor New York, NY 10022

Ellenoff Grossman & Schole LLP

  • · Jonathan Deblinger
  • · John J. Hart
Jonathan Deblinger, Esq. John J. Hart, Esq. Ellenoff Grossman & Schole LLP 1345 Avenue of the Americas New York, NY 10105-0302

Target side· DiamiR Biosciences Corp.

None on record


Counterparty Historyprior deals in DB
FirmRoleSideDeals in DB
Ellenoff Grossman & Schole LLPLegalAcquirer8View deals →
Hunter Taubman Fischer & Li LLCLegalAcquirer1View deals →

Filing Timelineevery filing on this issuer
  1. Jul 16, 2026today

    Aptorum Group Closes DiamiR Merger, Rebrands as Niki BioSolutions

  2. Apr 24, 2026this filing

    Aptorum Group to Merge with DiamiR Biosciences; Combined Company to Be Niki BioSolutions


Filing Trailcross-reference table
DateFormSectionHeadlineStatus
Jul 16, 2026definitiveAptorum Group Closes DiamiR Merger, Rebrands as Niki BioSolutionspost_vote

Sources

Aptorum Group Limited, a Cayman Islands company, agreed to merge with DiamiR Biosciences Corp., a Delaware corporation, with DiamiR surviving as a wholly owned subsidiary of Aptorum. Upon closing, DiamiR shareholders will own approximately 70% of the combined company's common stock, while existing Aptorum shareholders will own approximately 30%. The combined company will be renamed Niki BioSolutions, Inc. and is expected to trade on Nasdaq under the symbol NIKI.

Item id: 487c3945-a4b3-4a0b-8b7a-4ae82e117ece · ingested Apr 24, 2026