Sunshine Silver completes $310.5 million IPO on NYSE

Sunshine Silver Mining & Refining Company (NYSE: SSMR) completed its initial public offering of 23 million shares at $13.50 per share, raising approximately $310.5 million in gross proceeds before underwriting fees and expenses, according to a company statement.

The underwriters exercised their over-allotment option in full. Sunshine's common stock began trading on the New York Stock Exchange on June 4, 2026, under the ticker symbol SSMR.

Morgan Stanley, Scotiabank and BMO Capital Markets served as joint lead book-running managers for the offering. Canaccord Genuity, Citigroup and RBC Capital Markets acted as joint bookrunners.

The Securities and Exchange Commission declared the registration statement effective on June 3, 2026. The prospectus describing the offering terms has been filed with the SEC.

Sunshine Silver operates in Idaho's Coeur d'Alene Mining District and plans to bring the historic Sunshine Mine back into production. The company describes itself as having a vertically integrated mine-to-mill-to-refinery platform with an onsite silver refinery and permits for antimony production.

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