Oreterra Completes Airborne Geophysical Survey of the Kinkaid Cu-Au-Ag Project, Nevada, Identifies Significant New Porphyry Target

About this update from Oreterra Metals Corp.

Toronto, Ontario--(Newsfile Corp. - June 29, 2026) - Oreterra Metals Corp. (TSXV: OTMC) (OTCID: OTMCF) (FSE: D4R0) (WKN: A421RQ) ("Oreterra" or the "Company") is pleased to report completion of additional fieldwork including an airborne magnetic and radiometric survey over its 100% owned, road-accessible Kinkaid project in Nevada's Walker Lane trend. The new work was carried out in follow-up to highly encouraging previous results (see news, March 17, 2026 and August 7, 2025), which outlined multiple epithermal gold-silver and potential underlying porphyry copper-gold-silver targets. Importantly, the airborne survey and recently completed mapping and sampling has identified new, large-scale porphyry and epithermal targets in addition to those previously identified. "The results of the airborne geophysical survey combined with the recent discovery of numerous additional copper-gold-silver showings have generated a significant new porphyry target as well as firming up the signature of several previously suspected centres", noted John Biczok, Oreterra's Vice President of Exploration. "The project now warrants ground geophysical surveys (Induced Polarization + Magnetotelluric) over at least five targets thought to represent the main porphyry targets and the exposed epithermal gold zones overlying some of them, with the goal of generating drill targets for initial testing as early as next year." "Kinkaid has progressed rapidly," said Kevin Keough, Oreterra's CEO. "It now provides the Company with a second really outstanding, near drill-ready copper-gold-silver property with apparent porphyry-epithermal targets of considerable scale, to complement our high-profile Trek South porphyry copper-gold-silver discovery prospect in BC's Golden Triangle, where first-ever drilling will commence within weeks." A detailed corporate presentation on the Kinkaid project and a table of the April-May, 2026 assay results discussed in this news release are available on the Company's website at: https://www.oreterra.com/investors. Airborne Geophysical Survey Highlights

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