Mr. Matthew Gollat reports

ERRINGTON METALS FILES TECHNICAL REPORT FOR MINERAL RESOURCE ESTIMATE FOR THE SUDBURY BASIN PROJECT

Further to the news release dated Sept. 22, 2026, Errington Metals Corp. has filed on SEDAR+ an independent technical report titled "Technical Report -- Mineral Resource Estimate for the Sudbury Basin Project, Sudbury Basin, Northern Ontario, Canada," in respect of its Sudbury Basin project.

The technical report has been filed in accordance with National Instrument 43-101 (Standards of Disclosure for Mineral Projects). A copy of the technical report is available under the company's profile page on SEDAR+.

The technical report is dated Nov. 6, 2026, with an effective date of Sept. 20, 2026, and was prepared by Ryan Wilson, PGeo, and David Frost, FAusIMM, of DRA Americas Inc.

About Errington Metals Corp.

Errington Metals is a Canadian exploration and development company focused on critical and precious metals. The company is advancing its wholly owned Sudbury Basin project, which hosts high-grade volcanogenic-massive-sulphide-style mineralization in the world-renowned Sudbury mining district. Through systematic drilling and disciplined technical work, Errington Metals is positioning the Sudbury Basin project as a high-quality exploration and development opportunity.

The company is advancing a planned phase 2 55,000-metre drill program designed to expand resources and advance the property. Several regional targets throughout the recently consolidated property will also be tested.

We seek Safe Harbor.