VANCOUVER, BC, May 1, 2025 – Macarthur Minerals Limited (TSXV: MMS) (ASX: MIO) (OTC: MMSDF) (referred to as the Company or Macarthur) hereby announces an immediate change to its Registered Office and Principal Place of Business. The new location is Suite 4, Level 34, Waterfront Place, 1 Eagle Street, BRISBANE QLD 4000.

All other contact information remains the same.

Released on behalf of the Board of Directors by Mr. Cameron McCall, Executive Chairman and CEO.

Company profile
Macarthur is dedicated to iron ore development and lithium exploration, particularly focused on commencing production at its iron ore projects in Western Australia. The Lake Giles Iron Project’s mineral resources encompass the Ularring hematite resource (approved for development), which includes Indicated resources of 54.5 million tonnes at 47.2% Fe and Inferred resources of 26 million tonnes at 45.4% Fe. It also includes the Lake Giles magnetite resource, containing 53.9 million tonnes (Measured), 218.7 million tonnes (Indicated), and 997 million tonnes (Inferred). The Lake Giles Iron Project further holds Proven Ore Reserves of 51.9 Mt and Probable Ore Reserves of 184.7Mt. Macarthur also possesses iron exploration interests covering a 24 square kilometre tenement area in the Pilbara region of Western Australia. The Mineral Resource and Ore Reserve estimates mentioned here were previously disclosed to the ASX on March 21, 2022, including the supporting JORC reporting tables. The Company confirms that there is no new information or data that significantly impacts the information provided in the relevant market announcements. Furthermore, regarding Mineral Resources and Mineral Reserves, all assumptions and technical parameters supporting the estimates in the relevant market announcement continue to be valid and have not significantly changed.

This news release is not intended for distribution to United States services or for dissemination within the United States.

Caution Regarding Forward Looking Statements

Certain statements and information in this press release may be considered forward-looking statements as defined by applicable securities laws. These statements include all those that address activities, events, or developments the Company anticipates or expects to occur in the future, beyond historical facts. This includes, but isn’t limited to, statements about the anticipated completion of the Feasibility Study, the conversion of Mineral Resources into Ore Reserves, or the potential mining of the Project. These forward-looking statements are based on the Company’s current expectations, assumptions, and beliefs, using information currently available. While the Company believes these expectations are based on reasonable assumptions, such statements do not guarantee future performance. There is no assurance that these expectations will be correct, as actual results may differ significantly from those projected in the forward-looking statements. Factors that may cause actual results to differ materially include: unforeseen technological changes reducing iron or magnetite demand or substitution by other materials; the discovery of new, large, low-cost iron magnetite deposits; the overall level of global economic activity; failure to complete the FS; an inability to demonstrate the economic viability of Mineral Resources; and failure to secure mining approvals. Readers are cautioned against placing undue reliance on these forward-looking statements due to their inherent uncertainty. These statements concern future events and expectations and, as such, involve known and unknown risks and uncertainties. The forward-looking statements in this press release are made as of its date, and the Company assumes no obligation to update or revise them, whether due to new information, future events, or other factors, except as required by applicable laws.

SOURCE Macarthur Minerals Limited

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