Mr. Kevin Keough reports

ORETERRA GEOLOGICAL STAFF MOBILIZE TO TREK SOUTH COPPER-GOLD PROSPECT, GOLDEN TRIANGLE, BC, TO PREPARE FOR MAIDEN DRILL PROGRAM

Oreterra Metals Corp.'s geological team has mobilized to the Bronson camp, in the vicinity of the company's new, large-scale Trek South porphyry copper-gold prospect. The Trek South target has only recently been revealed by glacial ice melt and is located adjacent to the giant Teck-Newmont Galore Creek deposits in British Columbia's Golden Triangle. From the Bronson camp, initial preparations are being made for the establishment of a drill camp at Trek South proper, with camp build commencing on July 16 and drilling anticipated to get under way with two drills at approximately month-end. The summer work program will also aim to advance several other promising porphyry copper-gold and Eskay Creek-type VMS (volcanogenic massive sulphide) targets in the Trek-Galore Creek area.

"The near-term road ahead of us looks really exciting," said Kevin Keough, chief executive officer. "Trek South has all the hallmarks of a significant discovery in the making and we are very much looking forward to collaring the drills directly into the alteration, copper mineralization and metal values prominent in the bare rock on surface. We have an outstanding field team led by John Biczok, our vice-president, exploration, and will shortly have a full complement of field personnel on site, with camp and drilling operations managed by Equity Exploration Consultants of Vancouver. Further updates will be provided as the program advances, with initial drill results anticipated in August."

"The porphyry copper-gold deposits that Oreterra is targeting in the Golden Triangle typically occur in clusters," said John Biczok, vice-president, exploration. "We are fortunate at the Trek project to have not only the new Trek South prospect and the known porphyry zone at nearby Trek North, but several underexplored prospects nearby that we will also seek to advance from our base at Trek South."

2026 exploration targets

Trek property: In addition to the first-ever drill program on the 1.6-kilometre-wide porphyry target at Trek South, defined by an intense, large-scale induced polarization chargeability high, a coincident magnetic high, a coincident magnetotelluric anomaly, broad exposures of porphyry-type alteration, veining, visible copper mineralization, and values of copper, gold, silver and other elements, several underexplored nearby prospects will also be evaluated. These include the Tundra zone porphyry target, located one kilometre west of Trek South, the Tomb zone porphyry target, located 1.3 kilometres north of Trek South, and the Toe zone Eskay Creek-style VMS target, located 600 metres west of Trek South.

JW property: Considered to be Oreterra's most promising porphyry prospect outside the Trek claims, the JW claim is located just six kilometres northwest of the greate-than-one-billion-tonne Galore Creek deposits currently undergoing prefeasibility studies by a Teck-Newmont joint venture. The claim is entirely surrounded by the Teck-Newmont tenures. In August, a contract geological crew will undertake an eight-to-10-day mapping and sampling program across the target area.

Red Line property: Work by the company on the Red Line claims in 2023, located southeast of Trek, led to the discovery of a previously undocumented syenite pluton closely resembling key intrusives at the Galore Creek and Burgundy Ridge porphyry deposits. Mapping and sampling work planned for this field season will be the first thorough examination of this intriguing target.

Qualified person

The technical information in this news release has been reviewed and approved by John Biczok, PGeo, vice-president, exploration, for Oreterra Metals and a qualified person as defined by National Instrument 43-101. In addition to his extensive experience with several major mining companies exploring for a wide variety of ore deposit types across Canada and India, Mr. Biczok spent 12 years conducting exploration and research at the Musselwhite gold mine in Northwestern Ontario and has led the teams doing all of the company's fieldwork in the Golden Triangle since 2018.

About Oreterra Metals Corp.

Oreterra Metals is a TSX Venture Exchange-listed mineral exploration company focused primarily on gold, copper and silver. The company holds several wholly owned porphyry copper-gold prospects in British Columbia's Golden Triangle, the most significant of which is the newly identified Trek South prospect located adjacent to the southeast of Teck-Newmont's Galore Creek project, currently undergoing prefeasibility studies. Following a highly successful $9.7-million financing closed earlier in the year, a maiden two-phase, approximately 10,000-metre drill program at Trek South is now fully financed, for execution commencing July 16, 2026. Drilling will test the 1.6-kilometre-wide zone of porphyry-style alteration, mineralization, metal values and underlying coincident strong IP (induced polarization), MT (magnetotelluric) and magnetic anomalies present at Trek South. In addition, the first significant exploration work since 2007 is now planned for Oreterra's JW porphyry prospect, located six kilometres northwest of Galore Creek.

Additional wholly owned interests include two former producers in Nevada: the Kinkaid claims in the Walker Lane trend, covering numerous shallow gold-copper-silver workings over what is believed to be one or more porphyry centres, and the Scossa mine property in the Sleeper trend, which is a former high-grade gold producer. The company also holds a 100-per-cent interest in the large-scale Lundmark-Akow Lake gold-copper property adjacent to the northwest of the Musselwhite mine, where drilling by the company has produced highly encouraging, broad VMS-style gold-copper intersections. Oreterra also retains a continuing interest in several properties, including a 2-per-cent net smelter return royalty on McEwen Mining's Hislop gold property in Ontario and a 2-per-cent NSR royalty on Enduro Metals' Newmont Lake gold-copper-silver property in British Columbia. (Technical presentations on each of the Kinkaid, Scossa and Lundmark-Akow Lake properties, written by Mr. Biczok, are available on Oreterra's website.)

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