Mr. Chris Morrison reports

ANTEROS METALS PROVIDES CORPORATE UPDATE ON SEAGULL CRITICAL MINERALS PROJECT, ONTARIO

Further to the news release dated Oct. 9, 2025, Anteros Metals Inc. and Rift Minerals Inc. are moving ahead with a fully financed and fully permitted January, 2026, deep drill program designed to evaluate a previously untested geophysical anomaly at the Seagull critical mineral project, located approximately 80 kilometres northeast of Thunder Bay, Ont. Rift, as operator, will conduct the drilling on this exploration-stage property, which is being evaluated for platinum group elements, nickel, copper, hydrogen and helium.

Anteros has raised a total of $824,530, consisting of $604,530 in flow-through funds and $220,000 in hard-dollar funds, pursuant to the press releases for tranche 1 (Nov. 3, 2025) and tranche 2 (Nov. 21, 2025). The company was granted an option to acquire an up-to-49-per-cent undivided interest in the Seagull project.

To exercise the option, Anteros has agreed to:

• Underwrite the phase 1 cost of a planned 1,350-metre drill hole to earn a contingent 20-per-cent interest in the project. Rift has presented a drill plan and a budget of $600,000 to fully execute the phase 1 deep drill hole;
• Make a one-time upfront $50,000 cash payment to Rift prior to the commencement of drilling; and
• Pending phase 1 results, consider completing a second phase of exploration based on recommendations arising from phase 1.

The planned deep drill hole is designed to test a low-velocity geophysical anomaly identified by Rift's ambient noise tomography survey, located beneath the Seagull mafic-ultramafic intrusion. This anomaly represents a subsurface zone of interest that has not previously been drill tested.

The drill program will also incorporate specialized downhole gas sampling as historical drill records from 2001 documented the presence of gas encountered in a prior borehole on the intrusion. Gas testing and sample acquisition will be completed by LTD Production Services Ltd., under the direction of Edelgas Group: rare gas consultants. Gas sampling is investigatory in nature and does not imply the presence of commercial gas resources.

Qualified person

The scientific and technical information in this news release relating to the Seagull project was prepared by Rift, 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 and is provided for geological context only.

About Anteros Metals Inc.

Anteros is a Canadian exploration company focused on advancing a pipeline of critical mineral projects across Newfoundland and Labrador and select Canadian jurisdictions. The company targets copper, nickel, zinc and emerging strategic commodities that support the global energy transition. Immediate plans for its flagship Knob Lake property include bringing the historical iron-manganese mineral resource estimate into current status and commencing baseline environmental and feasibility studies.

We seek Safe Harbor.