Mr. Jordan Pandoff reports

LUMINA METALS ANNOUNCES CLOSING OF UPSIZED INITIAL PUBLIC OFFERING

Lumina Metals Corp. has successfully closed its oversubscribed, upsized initial public offering and secondary offering of common shares of the company.

The offering includes a treasury offering by the company for total gross proceeds of $312.47-million and a secondary offering of common shares held by a selling securityholder of the company for total gross proceeds of $93,742,500, each at a price of $12.50 per share, for total gross proceeds of $406,212,500.

The company has also granted to the underwriters (as defined below) an overallotment option to purchase up to an additional 4,874,550 common shares from treasury at a price of $12.50 per common share for additional gross proceeds of $60,931,875, if the overallotment option is exercised in full. The overallotment option is exercisable, in whole or in part, at any time for a period of 30 days from the closing date of the offering. If the overallotment option is exercised in full, the gross proceeds of the offering will be up to $467,144,375.

The offering was managed by a syndicate of underwriters, including BMO Capital Markets, National Bank Financial Inc., Morgan Stanley Canada Ltd., RBC Capital Markets and CIBC Capital Markets, as co-lead underwriters and joint bookrunners, and Trigon Dom Maklerski S.A., Canaccord Genuity Corp., Haywood Securities Inc., SCP Resource Finance LP and Stifel Canada.

The common shares are listed on the Toronto Stock Exchange under the symbol LMCU.

The offering was completed pursuant to a final long form prospectus dated April 23, 2026, filed in each of the provinces and territories of Canada. The prospectus is accessible on SEDAR+ under the company's issuer profile. The prospectus contains important, detailed information about the company and the offering. Prospective investors should read the prospectus before making an investment decision.

The company intends to apply to the Warsaw Stock Exchange (WSE) for the common shares to be admitted and introduced to the WSE. The company will be authorized to apply for the admission and introduction of the common shares for trading on the WSE once the Polish Financial Supervisory Authority (Komisja Nadzoru Finansowego) approves the Polish language prospectus in accordance with Regulation (EU) 2017/1129 of the European Parliament and of the Council of June 14, 2017, on the prospectus to be published when securities are offered to the public or admitted to trading on a regulated market, and repealing Directive 2003/71/EC (as amended). The offering is not conditional on listing on the WSE.

About Lumina Metals Corp.

Lumina Metals is a mineral exploration and development company advancing three copper and silver projects in southwestern Poland with sediment-hosted Kupferschiefer-type deposits. Lumina's portfolio includes the Nowa Sol, Sulmierzyce and Mozow projects, which collectively represent one of the most significant copper-silver discoveries in Europe in recent decades. The company has operated in Poland since 2011, with a dedicated in-country team.

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