Magna Terra Commences Exploration at the Humber and Shellbird Projects, Newfoundland

About this update from Magna Terra Minerals Inc

Toronto, Ontario--(Newsfile Corp. - June 18, 2026) - Magna Terra Minerals Inc. (TSXV: MTT) (the "Company" or "Magna Terra") is pleased to announce that it has commenced its summer exploration programs at the Humber Copper-Cobalt ("Humber") and Shellbird Gold ("Shellbird") Projects, located in western Newfoundland (Figure 1). The work, part of a Phase 1 2026 exploration program, at Humber is designed to follow-up on a successful initial exploration program in 2025 that resulted in the discovery of the 2.2-kilometre Birch Zone (Figures 2, 3, and 4) as well as the identification of several high-priority combined geophysical and geochemical (copper, cobalt) targets for follow-up prospecting (Figure 5). The initial work at Shellbird will focus on prospecting and geological mapping at this recently acquired gold project. The planned Phase 1 exploration program includes: Humber Copper-Cobalt Project Shellbird Gold Project "In addition to our exploration efforts on our priority projects in northern New Brunswick that commenced two weeks ago, we are eager to initiate Phase 1 exploration activities on our priority projects within our Newfoundland portfolio. Phase 1 work at the Humber Project will focus on expanding the strike extent of the Birch Zone Cu discovery, follow-up on the regional geophysical and geochemical targets generated in 2025 and look to complete stream sediment geochemical coverage of the entire property. This systematic approach at Humber will help to further identify the scale of copper mineralization at the Birch Zone as well as identify other zones of potential copper-cobalt mineralization within the greater project area. At Shellbird, we are eager to get our first 'boots on the ground' on the Project and follow-up on the historical rock sample results from 1997 within this very underexplored area. This early-stage opportunity, much like the Humber Project, was identified by our technical team and provides shareholders with exposure to another district-scale, low-cost land package that we will look to advance through systematic exploration. The Shellbird Gold Project is located along a mineralized trend that our team has a deep understanding of, as it lies along the projection of the regional-scale Doucer's Valley Fault Zone ("DVFZ"), which is host to the Company...

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