Fathom intercepts new mineralization zones at Gochager Lake Ni-Cu-Co

Calgary, Alberta--(Newsfile Corp. - September 16, 2026) - 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