[6-K] Quantum Biopharma Ltd. Class B Subordinate Voting Shares Current Report (Foreign Issuer)

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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 June 2025

Commission File Number: 001-39152

Quantum BioPharma Ltd.
(Translation of registrant's name into English)

55 University Ave., Suite 1003
Toronto, Ontario M5J2H7, Canada
(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 [ X ]      Form 40-F [   ]

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

		Quantum BioPharma Ltd.
		(Registrant)
Date: June 26, 2025		/s/ Donal Carroll
		Donal Carroll
		Chief Financial Officer

EXHIBIT INDEX

Exhibit Number		Description
99.1		Press Release dated June 26, 2025