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, 2026

Commission File Number: 001-40709

Ardagh Metal Packaging S.A.

(Name of Registrant)

56, rue Charles Martel

L-2134 Luxembourg, Luxembourg

+352 26 25 85 55

(Address of Principal Executive Offices)

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 ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): _____

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): _____

EXHIBIT INDEX

This report on Form 6-K comprises of the results of Ardagh Metal Packaging S.A.’s (the “Company”) 2026 annual general meeting of shareholders, which are attached hereto as Exhibit 99.1.

Incorporation by Reference

The information set forth in Exhibit 99.1 of this report on Form 6-K shall be deemed to be incorporated by reference into the registration statement filed on Form F-3, as amended (Registration No. 333-289154) by the Company (including any prospectus forming a part of such registration statement), and to be a part thereof from the date on which this report is furnished, to the extent not superseded by documents or reports subsequently filed or furnished.

Exhibit

Number

Description

99.1

Results of the 2026 Annual General Meeting of Shareholders of Ardagh Metal Packaging S.A.

SIGNATURES

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

Date: June 4, 2026


	Ardagh Metal Packaging S.A.


	By:	/s/ Oliver Graham
	Name:	Oliver Graham
	Title:	Chief Executive Officer

Ardagh Metal Packaging S.A. 6-K