Fathom Announces New Zones of Mineralization Highlighting Exploration Potential of Recently Announced Gochager Lake Ni-Cu-Co Deposit Maiden MRE

Fathom Nickel Inc. (CSE: FNI) (FSE: 6Q5) (OTCQB: FNICF) (" Fathom", or the " Company ") is pleased to announce the discovery of new zones of nickel-copper-cobalt mineralization highlighting the exploration potential of recently announced maiden Mineral Resource Estimate ("the MRE ") at the Company's 100%-owned Gochager Lake project ("the Project "). Highlights: Drillhole GL26029 intersected semi-massive to massive pyrrhotite-pentlandite-chalcopyrite veins and breccias across 21.44 m of mineralized drill core to the southwest of the Gochager Lake Ni-Cu-Co Deposit, returning >1% Ni across zones of increased sulphide abundance. The mineralized intercept is approximately 75 m outside of the maiden MRE, approximately 150 m west of high-grade mineralization inside the MRE open pit shell and remains open to the southwest. There is strong potential to expand the maiden MRE to include this mineralized intercept in GL26029. Drillholes GL26028 and GL26030 intersected a new mineralized zone of semi-massive to massive sulphide veins and breccias at depth approximately 155 m northeast of the maiden MRE. Ni-Cu-Co sulphide mineralization in this zone was intersected across 54.79 m of mineralized drill core in drillhole GL26030, and returned assay results up to 0.70% Ni and 0.65% Cu. The discovery of this new zone highlights exploration potential in terms of both the expansion of the maiden MRE in the immediate Gochager Lake deposit area as well as the discovery of additional mineralized bodies along strike to the northeast. A 1.99 g/t Pt assay result in GL26030 confirms the presence of PGE mineralization within the Gochager Lake Ni-Cu-Co Deposit mineralization system. Ian Fraser, Fathom CEO and VP Exploration, stated, "With the final Phase-2 drill assays received on August 26, 2026, and the maiden Mineral Resource Estimate (MRE) for the Gochager Lake Ni-Cu-Co Deposit released on September 10, 2026, we believe these results provide important support for the Project's next stage of growth. The Phase-2 program highlights clear potential to expand MRE mineralization along strike and at depth, reinforcing our decision to report these results following the maiden MRE announcement. Drilling west-southwest and east-northeast of the deposit, as well as at depth, intersected broad zones of Gochager-style disseminated sulphide mineralization, including local higher-grade semi-massive to massive vein and sulphide breccia zones in mafic-ultramafic intrusive rocks. Phase-2 drilling also returned anomalous nickel-copper-cobalt mineralization in metasedimentary rocks proximal to, and along strike from, the deposit area. Borehole electromagnetic (BHEM) surveys continue to define anomalous conductivity associated with Gochager-style mineralization and indicate stronger conductivity at depth, off-hole, and beyond current drilling. Importantly, several high-quality BHEM conductors remain untested at the deposit, along strike, and at depth. Overall, Phase-2 has identified multiple target areas with potential to expand the maiden MRE and has outlined additional exploration opportunities within intrusive lithologies along strike and at depth. Mineralized metasediments surrounding and occurring within the intrusive lithologies also represent a new exploration target generated by the 2026 drilling. The Company continues to integrate all data sets to better understand the deposit's geological setting, the new exploration targets, and the highly prospective eight-kilometre corridor hosting the Gochager Lake Ni-Cu-Co Deposit and new exploration targets." Phase-2 drilling consisted of 8 drillholes totaling 3,094 meters of drilling (Figures 1-3, Tables 1-3). The program tested off-hole conductive zones identified by borehole electromagnetic (BHEM) surveys during the Phase-1 drill program and continued to test along strike of the Gochager Lake Ni-Cu-Co Deposit in mafic-ultramafic intrusive rock as well as in met...