Marimaca Copper Completes A$80,000,000 Bookbuild

Core Viewpoint - Marimaca Copper Corp. has secured binding commitments for a brokered placement of 8,247,423 new Chess Depositary Interests (CDI) at a price of A$9.70 per CDI, resulting in gross proceeds of approximately A$80,000,000 or C$72,080,000 [1][2] Group 1 - The placement received strong support from new institutional and sophisticated investors, with demand significantly exceeding the targeted amount [2] - The net proceeds from the placement will be allocated for exploration at the Pampa Medina Project, detailed design and engineering at the Marimaca Oxide Deposit, and general corporate purposes [3] - The CDIs will be issued under an ASX Listing Rule 7.1 waiver, with completion expected around September 11, 2025, subject to regulatory approvals [4] Group 2 - Marimaca is focused on its 100%-owned Marimaca Copper Project and surrounding exploration properties located in the Antofagasta Region, Chile [7] - The Marimaca Copper Project includes the Marimaca Oxide Deposit, and the company is progressing through a Definitive Feasibility Study led by Ausenco Chile Ltda [8]