MAC Copper Limited (MTAL) adds August 2025 Form 6-K to F-3 shelf

Rhea-AI Filing Summary

MAC Copper Limited submitted a Form 6-K as a foreign private issuer for August 2025. The filing primarily serves a legal and procedural role rather than providing financial results.

The report specifies that it is incorporated by reference into MAC Copper Limited’s existing Form F-3 shelf registration (No. 333-276216). It also indexes an exhibit consisting of a press release dated August 18, 2025, which contains the substantive information referenced by this filing.

Form 6-K: How Foreign Companies Report to the SEC →

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 of the Securities Exchange Act of 1934

For the month of	August		2025
Commission File Number	001-41722

MAC COPPER LIMITED

(Translation of registrant’s name into English)

3rd Floor, 44 Esplanade
St. Helier, Jersey, JE4 9WG
Tel: +(817) 698-9901

(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 x Form 40-F ¨

Incorporation By Reference

This Report on Form 6-K, including all exhibits hereto, shall be deemed to be incorporated by reference into the registration statement on Form F-3 (Registration No. 333-276216) (including any prospectuses 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registration statement) and to be a part thereof from the date on which this report is furnished, to the extent not superseded by documents or reports subsequently filed or furnished.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 INDEX

Exhibit		Description of Exhibit
99.1		Press Release of MAC Copper Limited dated August 18, 2025.

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.

				MAC COPPER LIMITED
				(Registrant)
Date:		August 18, 2025		By:	/s/ Michael James McMullen
					Name:	Michael James McMullen
					Title:	Chief Executive Officer

FAQ

What is MAC Copper Limited’s Form 6-K for August 2025 about (MTAL)?

MAC Copper Limited’s Form 6-K for August 2025 is a procedural filing. It incorporates this report and its exhibits into the company’s Form F-3 shelf registration and identifies a press release dated August 18, 2025 as the key exhibit.

How does this Form 6-K affect MAC Copper Limited’s Form F-3 shelf (MTAL)?

The Form 6-K is expressly incorporated by reference into MAC Copper Limited’s Form F-3 registration statement No. 333-276216. This means the information in this report and exhibits becomes legally part of that shelf registration for securities offerings.

What exhibit is included with MAC Copper Limited’s August 18, 2025 Form 6-K (MTAL)?

The filing includes Exhibit 99.1, described as a press release of MAC Copper Limited dated August 18, 2025. The detailed substantive news or disclosure is contained in that press release rather than in the brief body of the Form 6-K.

Does MAC Copper Limited’s August 2025 Form 6-K include financial results (MTAL)?

The text of the Form 6-K itself does not present financial statements or earnings figures. Instead, it points to Exhibit 99.1, a press release dated August 18, 2025, as the document that contains the underlying information investors may review.

Who signed MAC Copper Limited’s August 18, 2025 Form 6-K (MTAL)?

The Form 6-K was signed on behalf of MAC Copper Limited by Michael James McMullen. He is identified in the filing as the company’s Chief Executive Officer and signed the report dated August 18, 2025.