Mr. Jeff Wilhoit reports

COEUR MINING TO JOIN S&P MIDCAP 400 INDEX

Coeur Mining Inc. will be added to the S&P MidCap 400 Index, effective prior to the open of trading on Monday, June 22, 2026.

Coeur's addition to the S&P MidCap 400 Index reflects the company's growth and transformation into the sector's only all-North American senior precious metals producer and a leading global silver company following two recent successful acquisitions, and its commitment to portfolio development through investments in exploration and mine expansions.

The S&P MidCap 400 Index serves as a widely followed benchmark for institutional investors and index funds seeking market exposure to mid-sized U.S. companies.

About Coeur Mining Inc.

Coeur Mining is a United States-based, well-diversified, growing precious metals producer with seven wholly owned operations: the New Afton gold-copper mine in British Columbia, Canada; the Rainy River gold-silver mine in Ontario, Canada; the Las Chispas silver-gold mine in Sonora, Mexico; the Palmarejo gold-silver mine in Chihuahua, Mexico; the Rochester silver-gold mine in Nevada; the Kensington gold mine in Alaska; and the Wharf gold mine in South Dakota. In addition, the company wholly owns the Silvertip polymetallic critical minerals exploration project in British Columbia, Canada.