Mr. Chris Morrison reports

ANTEROS METALS PROVIDES DRILLING PROGRESS UPDATE AT SEAGULL CRITICAL MINERALS PROJECT, ONTARIO

Anteros Metals Inc. has provided a drilling progress update at the Seagull critical minerals project, located approximately 80 kilometres northeast of Thunder Bay, Ont. Drilling is being carried out by Rift Minerals Inc., as operator, pursuant to the option agreement announced on Oct. 9, 2025, under which Anteros may earn up to a 49-per-cent 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 Jan. 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 two to four millimetres 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 continuing 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, chief executive officer 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."

The company will provide further updates as drilling progresses and as analytical results become available. At this time, all observations are visual in nature and laboratory assay results are pending.

About the Seagull project

The project is located approximately 80 kilometres northeast of Thunder Bay, Ont., and covers the interpreted mafic-ultramafic Seagull intrusion within the Nipigon basin. Historical exploration between 1998 and 2012 included airborne geophysical surveys and approximately 20,000 metres of diamond drilling, which reported disseminated to semi-massive sulphide mineralization containing nickel, copper and platinum group elements along parts of the intrusion's basal contact. These results are historical in nature and have not been independently verified by Anteros.

In 2024, Rift completed an ambient noise tomography (ANT) survey to refine the internal geometry of the Seagull intrusion and to help define a deeper subsurface target. The survey outlined contrasting velocity domains interpreted to reflect lithological and alteration variations. These interpretations have not been tested by drilling and remain unverified by Anteros. The current phase 1 drill program is intended to provide the first subsurface evaluation of the deeper ANT anomaly.

Qualified person

The scientific and technical information in this news release relating to the Seagull project was prepared by Rift Minerals and has been reviewed and approved by Dr. Geoff Heggie, PGeo (Ontario), a qualified person under National Instrument 43-101. This information has not been independently verified by Anteros Metals and is provided for geological context only.

About Anteros Metals Inc.

Anteros Metals is a Canadian mineral exploration company focused on advancing a pipeline of projects across Newfoundland and Labrador and select Canadian jurisdictions. The company applies a technically driven, data-supported exploration approach targeting critical minerals and emerging strategic commodities relevant to the global energy transition.

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