Coeur Mining, Inc. ("Coeur" or the "Company") ((NYSE, TSX:CDE) today announced that it 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

Coeur Mining, Inc. is a U.S.-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.

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For Additional Information

Coeur Mining, Inc.

200 S. Wacker Drive, Suite 2100

Chicago, Illinois 60606

Attention: Jeff Wilhoit, Vice President, Investor Relations

Phone: (312) 489-5800

www.coeur.com

Coeur Mining to Join S&P MidCap 400 Index