Oreterra Starts Drill Camp Construction at the Trek South Porphyry Copper-Gold Prospect, Golden Triangle, BC

About this update from Oreterra Metals Corp.

Toronto, Ontario--(Newsfile Corp. - July 16, 2026) - Oreterra Metals Corp. (TSXV: OTMC) (OTCID: OTMCF) (FSE: D4RO) (WKN: A421RQ)  (" Oreterra " or the " Company ") is pleased to report that construction of a 30-person fly-in camp is underway as per schedule at its Trek South porphyry copper-gold prospect, located adjacent to Teck-Newmont's Galore Creek tenures in BC's Golden Triangle. The Trek South camp will house crews for two core drills, in addition to geophysical and geological personnel, and is expected to be operational by month's end. The camp is located only 1.2 kms directly upslope from the constructed portion of the Galore Creek - Highway 37 road. A $20 million contribution toward the construction of the middle one third of this road was announced in September 2024 by the Canadian government. Oreterra will be seeking access to this road for future operations. "As a new drill prospect only recently revealed by glacial ice melt, a mid-July start for this year's first-ever drill program was stipulated by the Company's exploration permit with the BC Ministry of Mining and Critical Metals," said Kevin Keough, Chief Executive Officer. "However, environmental and archaeological site-clearing surveys being completed today and tomorrow, are expected to allow for a program start as early as June 15 in future years. Nonetheless, the months of August and early September generally offer the best weather conditions in this particular area of the Golden Triangle, and we're very much looking forward to taking advantage of the coming weather window to achieve a discovery at Trek South. We have the financial resources, the team, and the plan." Trek South Exploration Program : This season's program will follow the recommendations of a NI 43-101 technical report dated January 20, 2026, a copy of which may be found at https://www.oreterra.com/investors and on the Company's issuer profile at www.sedarplus.ca . The technical report recommends two initial phases of drilling at Trek South, with widely spaced holes appropriate to the porphyry copper-gold-silver target type and the large scale of the prospect. The phase 1 Trek South drill program as initially planned will encompass approximately 5,000 metres of drilling in 8 widely spaced angled core holes. Some adjustment to the number of holes, locations, lengths, dips and azimuths is expected to occur as the rocks tell their story. Subject to the success of phase 1, a second phase of drilling would expand the drilled area with step-backs and step-outs encompassing an estimated 4,600 metres of additional drilling in 8 widely space angled core holes.

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