Mr. Alastair Still reports

GOLDMINING APPLAUDS INCLUSION OF U.S. GOLDMINING IN RUSSELL 3000 INDEX

Goldmining Inc.'s majority-owned subsidiary, U.S. Goldmining Inc., has been added as a member of the broad-market Russell 3000 Index, according to a preliminary list published by FTSE (Financial Times Stock Exchange) on its website in connection with its annual reconstitution of the index. The reconstitution is expected to take effect after the United States market closes on June 27, 2025.

Goldmining owns 9.9 million shares of U.S. Goldmining, representing an approximate 79-per-cent ownership, with a market value of approximately $131-million based on the closing price of such shares on June 2, 2025.

Alastair Still, chief executive officer of Goldmining, commented: "We are thrilled to see U.S. Goldmining recognized for its progress with this inclusion in the Russell 3000. This milestone validates the success of our company's strategic IPO [initial public offering] launch of U.S. Goldmining just over two years ago and highlights the tangible value created for our shareholders. With multiple high-priority exploration targets and an initial economic assessment under way at the Whistler gold-copper project in Alaska, we see compelling upside as U.S. Goldmining advances its portfolio."

Strengthening Goldmining's equity portfolio

In addition to its stake in U.S. Goldmining, the company also owns:

• Over 21.5 million shares of Gold Royalty Corp., valued at approximately $56-million based on the closing price of such shares on June 2, 2025;
• Over 26 million shares of NevGold Corp., valued at approximately $10-million based on the closing price of such shares on June 2, 2025.

Together, these holdings bring the current market value of Goldmining's equity portfolio to approximately $197-million. The market capitalization of the company on an undiluted basis is approximately $210-million, based on the closing price of such shares on June 2, 2025. Goldmining remains debt-free and, in addition to its equity portfolio, owns 100 per cent of a project portfolio totalling 12.4 million gold equivalent ounces (measured and indicated) and 9.1 million gold equivalent ounces (inferred) across the Americas.

Qualified person

Paulo Pereira, PGeo, president of Goldmining, has supervised the preparation of, and verified and approved, all other scientific and technical information in this news release. Mr. Pereira is also a qualified person, as defined in National Instrument 43-101 -- Standards of Disclosure for Mineral Projects.

About Goldmining Inc.

The company is a public mineral exploration company focused on the acquisition and development of gold assets in the Americas. Through its disciplined acquisition strategy, the company now controls a diversified portfolio of resource-stage gold and gold-copper projects in Canada, the United States, Brazil, Colombia and Peru. The company also owns 21.5 million shares of Gold Royalty, 9.9 million shares of U.S. Goldmining and over 26 million shares of NevGold.

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