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MACARTHUR MINERALS LIMITED — Investor Relations & Filings

Ticker · MIO ISIN · AU0000062440 LEI · 549300JCF6SNVZGJMH30 ASX Mining and quarrying
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Filings indexed 93 across all filing types
Latest filing 2026-04-19 Regulatory Filings
Country AU Australia
Listing ASX MIO

About MACARTHUR MINERALS LIMITED

https://macarthurminerals.com/

Macarthur Minerals Limited is an exploration and development company focused on high-grade iron ore projects. The company's flagship asset is the Lake Giles Iron Project, which comprises the Ularring hematite project and the Moonshine magnetite project. These projects are designed to produce high-grade iron ore concentrates for the global steel industry, emphasizing premium products with low impurities to support efficient and lower-emission steelmaking processes. Beyond its primary iron ore focus, the company maintains a portfolio of exploration interests in other mineral commodities, including lithium and gold. Macarthur Minerals is dedicated to advancing its mineral resources through technical studies and strategic development to transition from an explorer to a producer of high-quality mineral products.

Recent filings

Filing Released Lang Actions
Change of Auditor 1 page 331.4KB
Regulatory Filings Classification · 1% confidence The document is an ASX announcement entitled “Change of Auditor” advising that William Buck has been appointed as the Company’s external auditor following the resignation of the prior auditor. It does not contain an audit report or detailed applied accounting principles; rather, it is a regulatory announcement regarding corporate governance. There is no specific S&P Capital IQ category for auditor appointments, so this falls into the fallback “Regulatory Filings” category (RNS).
2026-04-19 English
Form 604 Change in Substantial Holding (Gold Valley) 3 pages 216.8KB
Major Shareholding Notification Classification · 1% confidence The document is an Australian Form 604 “Notice of change of interests of substantial holder” under the Corporations Act 2001, showing changes in voting power for a substantial shareholder. This directly corresponds to a notification of changes in significant share ownership levels, matching the Major Shareholding Notification category (MRQ).
2026-04-15 English
Response to ASX Query Letter 6 pages 678.2KB
Regulatory Filings Classification · 1% confidence The document is an official response letter from Macarthur Minerals to ASX Listing Compliance addressing an ASX query about cleansing notice timing under Listing Rules 3.1/3.1A and section 708A of the Corporations Act. It does not present financial results, proxy materials, management changes, or investor presentations. Instead, it is a regulatory compliance communication with ASX and falls under general regulatory announcements. Therefore, it is best classified as a Regulatory Filing (RNS).
2026-04-15 English
Change of Director's Interest Notice (A Phillips) 3 pages 406.4KB
Director's Dealing Classification · 1% confidence The document is Appendix 3Y under ASX Listing Rule 3.19A.2 entitled “Change of Director’s Interest Notice.” It details the name of the director, dates, number of securities held before and after the change, type of trade, consideration, and other insider transaction particulars. This clearly matches a report of personal share transactions by a company director. Therefore, it is classified as Director’s Dealing.
2026-04-14 English
Form 603 Initial Substantial Holding (Wyatt Group) 2 pages 2.2MB
Regulatory Filings
2026-04-08 English
PoW Approval Secured to Support Bulk Sampling at Lake Giles 3 pages 588.6KB
Regulatory Filings
2026-04-08 English

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