Mr. Chris Morrison reports

ANTEROS METALS REPORTS DRILLING UPDATE AT SEAGULL CRITICAL MINERALS PROJECT, ONTARIO

Anteros Metals Inc. has provided an update for 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 news release dated Jan. 21, 2026, Anteros reports that during drilling at the project, gas was encountered at a depth of approximately 877 metres in the early morning hours of Jan. 23, 2026. Drilling has been temporarily suspended and the hole secured while the company and the project operator evaluate downhole conditions and determine appropriate next steps for continued safe drilling and gas sampling.

The nature, composition, volume and significance of the gas are currently unknown. Specialized sampling equipment has been mobilized to site to support further evaluation. The originally planned target depth of the drill hole is approximately 1,350 metres. The company will provide further updates as information becomes available.

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 remain unverified by Anteros, and the continuing 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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