Mr. Hayden Locke reports

MARIMACA ANNOUNCES GC AND CSO TRANSITION

Marimaca Copper Corp. has made changes to its executive management team with Laura Rich stepping down from her role as the company's general counsel (GC), company secretary and chief sustainability officer (CSO). This will support the company's strategy to transition these roles to a permanent presence in Chile.

Ms. Rich has served as Marimaca's GC since April, 2021, and subsequently its CSO. During this time Ms. Rich has focused on the progression of Marimaca's compliance, legal, regulatory and ethics programs as well as its sustainability objectives and agenda. In addition, Ms. Rich has acted as an integral part of the company's leadership team and has helped it to achieve and execute a number of core strategic financings and milestones, to support the company as it continues toward development. The company would like to thank her for her contributions.

Hayden Locke, president and chief executive officer of Marimaca Copper, states:

"We would like to thank Laura for her valuable contributions over the last three years, particularly with the development of our sustainability agenda and the guidance she has provided to support the execution of a number of fundamental strategic objectives. As we move closer to production, we are embarking on the process of building out our local business capabilities, including local appointments in several key senior management positions."

We seek Safe Harbor.