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 May 2025

Commission File Number: 001-36582

Altamira Therapeutics Ltd.

(Exact name of registrant as specified in its charter)

Clarendon House, 2 Church Street

Hamilton HM 11, Bermuda

(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 ☐

SIGNATURE

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.

	Altamira Therapeutics Ltd.

Date: May 9, 2025	By:	/s/ Thomas Meyer
	Name:	Thomas Meyer
	Title:	Chief Executive Officer

EXHIBIT INDEX

Exhibit Number		Description
99.1		Notice to Shareholders dated May 9, 2025
99.2		Proxy Card for the Annual General Meeting of Shareholders
99.3		Notice of Internet Availability

Altamira Therapeutics Ltd. 6-K