Anteros Metals Provides Drilling Progress Update at Seagull Critical Minerals Project, Ontario

St. John's, Newfoundland and Labrador--(Newsfile Corp. - January 21, 2026) - Anteros Metals Inc. (CSE: ANT) ("Anteros" or the "Company") is pleased to provide a drilling progress update at the Seagull Critical Minerals Project (the "Project"), located approximately 80 kilometres northeast of Thunder Bay, Ontario. Drilling is being carried out by Rift Minerals Inc. ("Rift"), as operator, pursuant to the option agreement announced on October 9, 2025, under which Anteros may earn up to a 49% interest in the Project. The Project is being evaluated for platinum group elements, base metals, and naturally occurring gases, including hydrogen and helium.

Further to the Company's January 12, 2026 news release announcing the commencement of drilling, the Phase 1 drill hole (RM26-01) is advancing on a two-shift basis and has reached a depth of approximately 670 metres, with drilling continuing toward the planned target depth of approximately 1,350 metres. Drill hole RM26-01 intersected the basal contact of the Seagull mafic-ultramafic intrusion at approximately 612.5 metres depth, transitioning into Archean basement rocks of the Quetico Subprovince, comprising quartz-feldspar biotite schist. The intersection represents a key geological milestone for the program, documenting the depth and nature of the intrusive contact at this location.

In the nine metres immediately above the basal contact, trace orthomagmatic-style sulphide mineralization was observed as small disseminated blebs (approximately 2-4 mm in size). Trace native copper has been locally observed along alteration veinlets at select intervals, consistent with secondary mineralization styles previously documented in the Seagull intrusion and other Mid-Continent Rift systems.

Ultramafic lithologies encountered to date include intervals of serpentinized lherzolite, which are favourable for the ongoing evaluation of naturally occurring hydrogen systems. Gas-handling and monitoring equipment is in place on site to support sampling activities as drilling progresses.

"Intersecting the basal contact in the Phase 1 drill hole is an important step in advancing the Seagull Project," said Trumbull Fisher, CEO of Anteros. "This confirms the geological architecture at depth and allows us to continue drilling toward the deeper portions of the intrusion while systematically evaluating the Project's critical minerals and gas potential."