Mr. Matthew Gollat reports

ERRINGTON METALS CORP. ANNOUNCES UPGRADE TO THE OTCQX BEST MARKET

Errington Metals Corp.'s common shares have qualified to trade on the OTCQX Best Market. The company's common shares have been upgraded to OTCQX from the Pink Ltd. market.

Errington Metals begins trading today on OTCQX under the symbol ERRMF. U.S. investors can find current financial disclosure and real-time Level 2 quotes for the company on the OTC Markets website.

Errington Metals focuses on operations in world-class mining districts in North America, working to grow the Sudbury basin project, located in the heart of one of the world's most sought-after mining camps, Sudbury, Ont.

Upgrading to the OTCQX Market is an important step for companies seeking to provide transparent trading for their U.S. investors. For companies listed on a qualified international exchange, streamlined market standards enable them to utilize their home market reporting to make their information available in the United States. To qualify for OTCQX, companies must meet high financial standards, follow best-practice corporate governance and demonstrate compliance with applicable securities laws.

"Graduating to the OTCQX Best Market is an important milestone for Errington Metals as we continue to expand our reach across North America," said Matthew Gollat, president and chief executive officer of Errington Metals. "Trading on OTCQX will provide greater visibility and easier access for U.S. investors as we advance our Sudbury basin project."

As a further step in expanding access to the U.S. capital markets, Errington Metals has commenced the application process for eligibility with the Depository Trust Company (DTC) for its common shares traded in the United States. If approved, DTC eligibility is expected to facilitate more efficient electronic clearing and settlement of the company's shares and improve accessibility for U.S. investors and brokerage firms. The application remains subject to DTC's review and approval process, and there can be no assurance that DTC eligibility will be obtained or as to the timing of any approval.

According to OTC Markets Group Inc., trading in non-U.S. North American securities on its markets reached $23.4-billion in the second quarter of 2026, representing an 88.25-per-cent increase over the second quarter of 2025. OTC Markets recorded $453.34-billion in total dollar volume in the first half of the year. Canada ranked among the top home markets by trading volume during the quarter, highlighting sustained U.S. investor demand for internationally listed names.

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 VMS-style (volcanogenic massive sulphide) 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 55,000-metre phase 2 drill program designed to grow resources and advance the Sudbury basin project. Several regional targets throughout the recently consolidated property will also be tested.

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