Santacruz Silver's Wholly Owned Bolivian Subsidiary, San Lucas, Successfully Completes Fourth Tranche of 70 Million Bolivian Bolivianos Promissory Note in the Bolivian Market, Further Advancing Transition from Prior Facility

Vancouver, British Columbia--(Newsfile Corp. - August 5, 2026) - Santacruz Silver Mining Ltd. (NASDAQ: SCZM) (TSXV: SCZ) ("Santacruz" or the "Company") is pleased to announce that its wholly owned Bolivian subsidiary, Empresa Minera San Lucas S.A. ("San Lucas"), has successfully completed the fourth offering (the "Offering") under its promissory note program (the "Program"), "Pagarés Bursátiles San Lucas - Emisión 4", in the Bolivian capital markets on August 4, 2026.

The Offering raised gross proceeds of 70 million Bolivian bolivianos ("Bs" ) through unsecured promissory notes bearing an annual interest rate of 10.9985% and maturing on July 18, 2027.