Welcome to our dedicated page for MAC Copper SEC filings (Ticker: MTAL), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
This page aggregates historical U.S. Securities and Exchange Commission filings for MAC Copper Limited, which previously traded on the New York Stock Exchange under the ticker MTAL. MAC Copper Limited was a foreign private issuer and filed reports such as Form 20-F and Form 6-K in connection with its metals and mining activities and corporate developments.
Among the key documents available are multiple Form 6-K current reports that furnish press releases on topics including the proposed acquisition of 100% of MAC’s issued share capital by Harmony Gold (Australia) Pty Ltd via a Jersey law scheme of arrangement, court directions and sanction of the scheme, dispatch of the scheme circular, shareholder voting results, and regulatory approvals from the South African Reserve Bank and Australia’s Foreign Investment Review Board. These filings also incorporate operational updates, such as the June 2025 quarterly activities report describing safety performance, copper production, cost metrics, and project development at the CSA Copper Mine.
A pivotal document in the MTAL filing history is Form 15, in which MAC Copper Limited certified the termination of registration of its ordinary shares under Section 12(g) of the Securities Exchange Act of 1934 and the suspension of its duty to file reports under Sections 13 and 15(d). The Form 15 explains that, effective as of October 10, 2025 and implemented on October 24, 2025, Harmony Gold (Australia) Pty Ltd acquired 100% of the issued share capital in MAC Copper Limited by way of the Jersey law scheme of arrangement, and notes that the approximate number of holders of record as of the certification date was one.
Through this filings archive, users can follow how MAC Copper Limited reported on the Harmony transaction, its financing and streaming arrangements, and its risk exposures, as well as how it completed its transition from a listed foreign private issuer to a wholly owned subsidiary. Stock Titan’s tools can help summarize lengthy filings, highlight key terms in forms such as 6-K and 15-12G, and make it easier to understand the implications of these regulatory documents for the historical MTAL listing.
Metals Acquisition Corp. II filing a joint Schedule 13G discloses shared voting and dispositive power positions held by Millennium-related entities and Integrated Core Strategies. Integrated Core Strategies (US) LLC reports shared voting/dispositive power over 1,055,000 shares (4.6%). Millennium Management LLC, Millennium Group Management LLC and Israel A. Englander each report shared voting/dispositive power over 1,930,000 shares (8.4% each). The filing includes a Joint Filing Agreement dated March 18, 2026 and is signed on that date.
Metals Acquisition Corp. II reports that it has completed its initial public offering of 23,000,000 units at $10.00 each, raising gross proceeds of $230,000,000. Each unit includes one Class A ordinary share and one-third of a redeemable warrant exercisable at $11.50 per share.
The company also sold 5,066,666 private placement warrants at $1.50 per warrant, generating an additional $7,600,000. A total of $230,000,000, including up to $9,200,000 of deferred underwriting commissions, was placed into a U.S.-based trust account for a future business combination.
The audited balance sheet shows total assets of $232,377,802, including $2,346,149 of cash outside the trust and $230,000,000 in the trust account. Transaction costs for the IPO and private placement totaled $14,481,900, and 12,733,333 warrants are outstanding.
Mudita Advisors LLP, as an investment advisor and 10% owner of Metals Acquisition Corp. II, filed an initial statement of beneficial ownership. The filing shows indirect holdings of public warrants and Class A ordinary shares held by several advised investment vehicles.
The public warrants are exercisable for Class A ordinary shares at $11.50 per share, becoming exercisable 30 days after completion of the company’s initial business combination and expiring five years after that business combination, or earlier if redeemed or the company is liquidated.
FIL Limited, together with Pandanus Partners, L.P. and Pandanus Associates, Inc., filed a Schedule 13G reporting beneficial ownership of 5,849,635 shares of Mac Copper Ltd (MTAL) Class A common stock, representing 7.1% of the class as of the reported event.
FIL reports sole voting power over 5,773,747 shares and sole dispositive power over 5,849,635 shares; shared voting and dispositive power are listed as zero. The filing certifies the holdings were acquired and are held in the ordinary course, not to change or influence control. One or more other persons may receive dividends or sale proceeds, with no single such interest exceeding five percent.
MAC Copper Ltd received an acquisition notice update. In Amendment No. 4 to a Schedule 13D, Glencore-affiliated reporting persons disclosed an exit filing after Harmony Gold (Australia) Pty Ltd acquired 100% of MAC Copper by a Jersey law scheme of arrangement.
On October 31, 2025, the reporting persons received $12.25 per Ordinary Share, for total consideration of $122,500,000. Following the transaction, Glencore plc, Glencore International AG, and Glencore Operations Australia Pty Limited reported 0 shares beneficially owned, representing 0% of the class. The scheme implementation deed was dated May 27, 2025, and this filing constitutes the final amendment and exit filing for the reporting persons.