Marimaca Copper Appoints Former Ma'aden CFO Louis Irvine to Board Ahead of Project Financing

Marimaca Copper has appointed Louis Irvine, a chartered accountant with more than 30 years of mining industry experience and the former Chief Financial Officer of Ma'aden, as an Independent Non-Executive Director effective November 1, 2026. Irvine joins the board as the company prepares the project financing package for its Marimaca Oxide Deposit in northern Chile and advances toward a full construction decision.

Company Overview

Marimaca Copper is a TSX- and ASX-listed copper company developing high-quality copper assets in northern Chile. Its flagship asset, the Marimaca Oxide Deposit Project (MOD), is located in the Antofagasta region near the city of Antofagasta and the port of Mejillones, and the company describes it as one of the last decade's few globally significant greenfield copper discoveries, with substantial exploration upside. Marimaca also controls the Pampa Medina and Madrugador exploration properties in the Sierra de Medina region, 30 kilometers from the MOD, where recent drilling identified oxide extensions and high-grade sulfide mineralization at depth.

Board Appointment Effective November 1, 2026

Marimaca Copper Corp. (TSX: MARI | ASX: MC2) announced on November 2, 2026, from Vancouver, British Columbia, that Louis Irvine has joined its board as an Independent Non-Executive Director, effective November 1, 2026.

Finance Leadership & South American Copper Experience

Irvine most recently served as Chief Financial Officer (CFO) of Ma'aden (Saudi Arabian Mining Company) from 2022 until his retirement in mid-2025. In that role, he helped shape Ma'aden's financial strategy and capital allocation framework.

Before Ma'aden, Irvine held several executive finance roles at international mining companies, including CFO of Endeavour Mining, Executive Head of Strategy and Business Development at Anglo American, and CFO Copper at Xstrata.

His experience developing and financing copper projects in South America includes the Las Bambas, Quellaveco and Antapaccay operations in Peru.

Chair Comments on Marimaca Oxide Deposit Development

Independent Chair of Marimaca Copper, Giancarlo Bruno Lagomarsino, welcomed the appointment and tied Irvine's background to the company's development of the Marimaca Oxide Deposit (MOD).

"We are excited to welcome Louis to the Marimaca Board. His extensive experience as a senior finance executive and listed company CFO across the mining industry, and deep experience in Latin America, will be a valuable addition to Marimaca as we develop the Marimaca Oxide Deposit."

Lagomarsino also pointed to Irvine's record of carrying projects from financing through construction and into operations, and to the timing of his arrival.

"Louis brings first-hand experience financing mining projects through the development and construction phases, into operations across various commodities and jurisdictions. He joins at a pivotal time for Marimaca, as we prepare the project financing package for the MOD and advance towards a full construction decision."

Next Steps

Marimaca Copper is preparing the project financing package for the MOD and advancing toward a full construction decision. Irvine joins the board for this stage of the project's development.