UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
Reportof Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities ExchangeAct 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 annualreports 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 deemedto be incorporated by reference into the registration statement on Form F-3 (Registration No. 333-276216) (including any prospectusesforming a part of such registration statement) and to be a part thereof from the date on which this report is furnished, to the extentnot superseded by documents or reports subsequently filed or furnished.
EXHIBIT INDEX
| Exhibit | Description of Exhibit | |
| 99.1 | Results of Court Meeting and General Meeting | |
| 99.2 | Amended Articles of Association |
SIGNATURES
Pursuant to the requirementsof the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereuntoduly authorized.
| MAC COPPER LIMITED | ||||||
| (Registrant) | ||||||
| Date: | August 29, 2025 | By: | /s/ Michael James McMullen | |||
| Name: | MichaelJames McMullen | |||||
| Title: | ChiefExecutive Officer | |||||