# EDGAR Filing Document

**Accession Number:** 0001950246
**File Stem:** 0001104659-25-101998
**Filing Date:** 2025-10
**Character Count:** 3466
**Document Hash:** b44530639338a5cf2ea1bf098c617afb
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-25-101998.hdr.sgml**: 20251024

**ACCESSION NUMBER**: 0001104659-25-101998

**CONFORMED SUBMISSION TYPE**: 15-12G

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251024

**DATE AS OF CHANGE**: 20251024

**EFFECTIVENESS DATE**: 20251024

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MAC Copper Ltd
- **CENTRAL INDEX KEY:** 0001950246
- **STANDARD INDUSTRIAL CLASSIFICATION:** METAL MINING [1000]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** Y9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 15-12G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41722
- **FILM NUMBER:** 251414303

**BUSINESS ADDRESS:**
- **STREET 1:** 3RD FLOOR
- **STREET 2:** 44 ESPLANADE, ST
- **CITY:** ST. HELIER
- **STATE:** Y9
- **ZIP:** JE4 9WG
- **BUSINESS PHONE:** 8176989901

**MAIL ADDRESS:**
- **STREET 1:** 3RD FLOOR
- **STREET 2:** 44 ESPLANADE, ST
- **CITY:** ST. HELIER
- **STATE:** Y9
- **ZIP:** JE4 9WG

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Metals Acquisition Ltd
- **DATE OF NAME CHANGE:** 20221011

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**WASHINGTON, D.C. 20549**

**FORM 15** 

**CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION** 

**UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934** 

**OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d)** 

**OF THE SECURITIES EXCHANGE ACT OF 1934.**

**Commission File Number 001-41722**

**MAC COPPER LIMITED**

**(Exact name of registrant as specified in its charter)**

**3rd Floor, 44 Esplanade**

**St. Helier, Jersey, JE4 9WG**

**+44 1534 514 000**

**(Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)** 

**Ordinary Shares, $0.0001 par value per share**

**(Title of each class of securities covered by this Form)**

**None** 

**(Titles of all other classes of securities for which a duty to file reports under section 13(a) or 15(d) remains)** 

Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:

---

| | |
|:---|:---|
| Rule 12g-4(a)(1) | x |
| Rule 12g-4(a)(2) | ¨ |
| Rule 12h-3(b)(1)(i) | x |
| Rule 12h-3(b)(1)(ii) | ¨ |
| Rule 15d-6 | ¨ |
| Rule 15d-22(b) | ¨ |

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Approximate number of holders of record as of the certification or notice date: One\*

\*Explanatory Note: Effective as of October 10, 2025 and implemented on October 24, 2025, pursuant to that certain binding scheme implementation deed, dated as of May 27, 2025, by and among MAC Copper Limited (the "<u>Company</u>"), Harmony Gold Mining Company Limited ("<u>Harmony</u>") and Harmony Gold (Australia) Pty Ltd ("<u>Harmony Australia</u>"), a wholly owned subsidiary of Harmony, Harmony Australia acquired 100% of the issued share capital in the Company by way of a Jersey law scheme of arrangement pursuant to Article 125 of the Companies (Jersey) Law 1991.

Pursuant to the requirements of the Securities Exchange Act of 1934, MAC Copper Limited has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.

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| | | |
|:---|:---|:---|
|  | **MAC COPPER LIMITED** | **MAC COPPER LIMITED** |
| Date: October 24, 2025 | By: | /s/ Michael James McMullen |
|  | Name: | Michael James McMullen |
|  | Title: | Chief Executive Officer |

---