C3 Metals Intersects 269m at 0.30% Copper, Including 60.4m at 0.41% Copper from 346m in First Ever Drill Hole at Khaleesi Copper Project, PeruToronto, Ontario--(Newsfile Corp. - December 15, 2025) - C3 Metals Inc. (TSXV: CCCM) (OTCQB: CUAUF) ("C3 Metals" or the "Company") is pleased to announce that the first hole ever drilled at its 100%-owned Khaleesi copper project ("Khaleesi" or "the Project") in southern Peru intersected 269.0m at 0.30% copper, including 60.4m at 0.41% copper from 346.0m downhole (approximately 250.0m vertical depth). Khaleesi is a highly compelling greenfield copper project that the Company is currently testing for the first time using two diamond drill rigs and a minimum of 6,000m of drilling (see press release dated September 30, 2025). Initial results demonstrate the potential for a large, well-mineralized magnetite and garnet skarn body interfingered with multiple intrusive bodies. The mineralized skarn-intrusive contact zone appears well defined by coincident strong chargeability and magnetic anomalies. Importantly, drilling confirms that copper mineralization continues under an extensive area of shallow glacial till cover.Dan Symons, President and CEO, stated, "To intersect a broad zone of copper mineralization in the first ever hole drilled on a greenfield project like Khaleesi is a tremendous result. The porphyry and skarn systems along the Andahuaylas-Yauri belt can typically host very large tonnages. Based on size and strength of the alteration, mineralization, geophysical footprints, and the geology we are seeing in drilling, Khaleesi clearly demonstrates the potential for a large copper system analogous to some of the large nearby deposits. Additionally, copper grades in this first hole are consistent with mine grades in the district1. Importantly, we have now confirmed that copper mineralization extends under an extensive area of thin glacial till cover, which significantly increases the drill target area of the Khaleesi system. More drilling will be required before we can determine the ultimate size of the Khaleesi system, but with the results of this first ever hole, we are off to a great start."Khaleesi First Ever Drill Hole HighlightsDrill hole KHZ5800-001 was drilled to a depth of 626.1m and ended in copper mineralization.A broad zone of near-surface, skarn- and porphyry-style copper-molybdenum mineralization reported a downhole intersection of 269.0m at 0.30% copper, including 60.4m at 0.41% copper. Mineralization remains open in all directions and at depth.High-grade garnet exoskarn copper-gold-silver mineralization was intersected at the top of hole, reporting 4.0m at 2.03% Cu, 0.17g/t Au and 12.14g/t Ag.KHZ5800-001 was collared to test below a small area of outcropping magnetite skarn coincident with large magnetic and chargeability anomalies. Importantly, the hole confirmed copper mineralization extends at least 100m beneath an area of thin glacial till cover.Follow-up drill holes are planned to extend and test this mineralization along strike, near surface and at depth, including under the thin glacial till cover.Highly anomalous molybdenum (20 samples > 100 ppm), cobalt (47 samples > 200 ppm), silver (11 samples > 2 g/t Ag) and gold (9 samples > 0.1 g/t Au) were also reported in this first hole.An epithermal vein, similar to those occurring at surface in the area, cross cut the magnetite skarn in drill core and assayed 2.3m at 0.77% Cu, 0.495 g/t Au, 92.10 g/t Ag, 0.18% Zn and > 1% Pb (Pb overlimit value still pending).Table 1: Significant assays in first Khaleesi drill hole KHZ5800-001Hole IDFrom(m)To(m)Length(m)Cu(%)Mo(ppm)Au(g/t)Ag (g/t)Pb(%)Zn(%)KHZ5800-00115.7019.704.002.03280.17112.14NSA0.07Including15.7017.702.003.77560.32622.05NSA0.10252.20272.2020.000.32170.0371.08NSANSA284.70322.0037.300.19150.0250.80NSANSA346.00615.00269.000.30650.0371.50NSANSAIncluding393.80396.102.300.77480.49592.10>1%0.18444.00497.3553.350.36200.0460.80NSANSA544.80605.2060.400.411910.0250.72NSANSA NotesNSA = No Significant Assays.Composite intervals are calculated using length weighted averages based on a combination of lithological breaks and copper assay values according to a 0.15% Cu cutoff and include a maximum of 12 meters of internal dilution. All intervals reported are down hole core lengths, and true thicknesses have yet to be determined. Mineral resource modeling is required before true thicknesses can be estimated. The Khaleesi project is located in the Andahuaylas-Yauri Belt in southeastern Peru, home to large copper skarn and porphyry deposits and operating mines such as Las Bambas (MMG), Constancia (Hudbay Minerals), Antapaccay (Glencore), and others (Figure 1).Figure 1: Regional map showing C3 Metals' mineral concession package in relation to other large-scale operations, development projects and exploration projects. To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/2661/278011_d71bb86084d90b00_001full.jpgKhaleesi is lo