Marimaca Copper Corp. announced several changes to the structure of its board and senior management team as it positions itself for the transition from explorer to developer and, eventually, copper producer. Highlights: Mr. Mike Haworth transitions from Executive to Non-Executive Chair, Current President, Mr. Hayden Locke join the Board of Directors, Ms. Petra Decher step down from the Board of Directors, Mr. Colin Kinley to succeed Ms. Decher as Lead Independent Director and Chair of the Audit Committee, Creation of the role of Chief Operating Officer, to be assumed by Mr. Luis Tondo, Appointment of Ms. Laura Rich as General Counsel and Corporate Secretary, Mr. Clive Newall appointed as a member of the Audit Committee and Compensation & ESG Committee.