ATEX Intersects 146 Meters of 2.00% CuEq at B2B Zone with over 600 Meters of Results Still PendingHigh-Grade Interval of 54 Meters at 2.50% CuEq Remains Open and Expected to Grow with Further Results and Expand B2B DimensionsToronto, Ontario--(Newsfile Corp. - December 18, 2025) - ATEX Resources Inc. (TSXV: ATX) (OTCQB: ATXRF) ("ATEX" or the "Company") is pleased to announce full results for the initial Phase VI drill hole ATXD25C and partial results for drill hole ATXD26B, the second hole from the current campaign at the Valeriano Copper-Gold Project ("Valeriano" or the "Project") located in Atacama Region, Chile. Drilling commenced in September with six rigs operational on site and has already achieved half of the 25,000 meters guided for Phase VI. Despite the drill program being ahead of schedule, assay laboratory turnaround times are currently longer than anticipated due to elevated seasonal demand across the industry. Results will be released as they are received."Initial results for drill hole ATXD26B have delivered another high-grade intercept in the B2B Zone and further demonstrates potential to enlarge this high-grade target," stated Ben Pullinger, President and CEO of ATEX. "Results from initial Phase VI drilling at the B2B Zone are improving our understanding of the high-grade system and confirming potential for growth beyond the 2025 Mineral Resource Estimate. To date the program has surpassed expected productivity numbers with 12,550m already completed and over 6,500m of samples currently at the lab."Highlights include:ATXD26B, a daughter hole targeting the B2B Zone intersecting 54 metres ("m") of 2.50% copper equivalent ("CuEq") (1.58% copper "Cu", 0.88 g/t gold "Au") within broader intervals of 146m of 2.00% CuEq (1.30% Cu, 0.67 g/t Au) and 224m of 1.52% CuEq (1.02% Cu, 0.49 g/t Au).Logged breccia mineralization intersected in ATXD26B is anticipated to extend the current limits of the B2B Zone by 100 meters down dip.Chalcopyrite and bornite mineralization with associated brecciation, characteristic of the B2B Zone was intersected from approximately 1,050m to 1,400m downhole, before entering well mineralized early porphyry associated with the high-grade trend until the end of the hole. Over 600m of assay results for ATXD26B are outstanding with full results anticipated in January.Finalized assays from ATXD25C resulted in an improved intercept of 164m of 2.77% CuEq (1.69% Cu, 0.97 g/t Au, 5.5 g/t Ag, 43 g/t Mo) vs. 2.72% CuEq previouslyi, including 86m of 3.84% CuEq (2.28% Cu, 1.41 g/t Au, 7.9 g/t Ag, 48 g/t Mo) vs. 3.77% CuEq previously, and 40m of 4.83% CuEq (2.76% Cu, 1.88 g/t Au, 10 g/t Ag, 43 g/t Mo) vs. 4.73% CuEq previously, starting at 1,558m downhole.The reported intervals are contained within a broader intercept of 584m at 1.27% CuEq (0.83% Cu, 0.39 g/t Au, 2.2 g/t Ag, 65 g/t Mo) from 1,302m downhole.Results exceed the average B2B Zone grade estimated in the 2025 MRE highlighting upside.The horizontal width of approximated 170m is indicative of thick, continuous mineralization underscoring the potential for increase in material and tonnage in the area of this hole.Table 1 – Partial Results for ATXD26B & Summary Results for ATXD25C Hole IDFromToIntervalCuAuAgMoCuEq %(1)(m)(m)(m)(%)(g/t)(g/t)(g/t)ATXD26B1,0141,2382241.020.49--1.52Incl.1,0921,2381461.300.67--2.00Incl.1,1741,228541.580.88--2.50ATXD25C1,3021,8865840.830.392.2651.27Incl.1,5581,7221641.690.975.5432.77Incl.1,5581,644862.281.417.9483.84Incl.1,6041,644402.761.8810.0434.83 (1) CuEq calculated using recoveries assumed in 2025 MRE (see Company news dated September 23, 2025) using the formula: Cu (%) + 1.04991243188302 x Au (g/t) + 0.00824244819238401 x Ag (g/t) + 0.000357909627766355 * Mo (g/t).(2) CuEq reported assuming metal prices of US$2,750/oz Au, US$3.80/lb Cu, US$27/oz Ag, and US$22/lb Mo.(3) CuEq reported assuming recoveries of Cu 94%, Au 95%, Ag 80% and Mo 64%.(4) ATXD25C and ATXD26B were composited at a cut-off of 0.3% CuEq with a maximum internal dilution of 18m representing 26m of late-porphyry dykes intersected at 1,532m in ATXD25C.(4) Ag and Mo pending for released ATXD26B intersections with 634m of assays pending to the end of the hole. 4m of drill core was not recovered between 1,140m and 1,144m in a fault zone.(5) Horizontal width of mineralized ATXD25C intersection 1,558m to 1,722m is approximately 170m.Figure 1. Long-Section of B2B and Porphyry ModelsiiTo view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/6303/278586_c0873ae6844ea848_001full.jpgFigure 2. Plan Map of Phase VI Drill Holes To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/6303/278586_c0873ae6844ea848_002full.jpgPhase VI Drill Program UpdateThe Phase VI drill program has six diamond drill rigs currently active on site and has already achieved half of the targeted 25,000 metres of exploration drilling prioritizing the high-grade B2B Zone and similar nearby high-gr