GCM Mining Corp. (TSX: GCM) (OTCQX: TPRFF) announced that it has filed an updated Prefeasibility Study technical report for its Segovia Operations pursuant to National Instrument 43‐101 – Standards of Disclosure for Mineral Projects. The Technical Report, which supports the disclosure made by the Company in its March 24, 2022 news release and its 2021 Annual MD&A dated March 31, 2022, was prepared by SRK Consulting (U.S.), Inc. and is based on the updated Mineral Reserve and Mineral Resource estimates for the Segovia Operations with an effective date of December 31, 2021.

About GCM Mining Corp.

GCM Mining is a mid-tier gold producer with a proven track record of mine building and operating in Latin America. In Colombia, the Company is a leading high-grade underground gold and silver producer with several mines in operation at its Segovia Operations. Segovia produced 206,389 ounces of gold in 2021. In Guyana, the Company is advancing its fully funded Toroparu Project, one of the largest undeveloped gold/copper projects in the Americas, which is expected to commence production of more than 200,000 ounces of gold annually in 2024. GCM Mining pays a monthly dividend to its shareholders and has equity interests in Aris Gold Corporation (~44%; TSX: ARIS; Colombia – Marmato, Soto Norte; Canada – Juby), Denarius Metals Corp. (~29%; TSX-V: DSLV; Spain – Lomero-Poyatos and Colombia – Guia Antigua, Zancudo) and Western Atlas Resources Inc. (~26%; TSX-V: WA: Nunavut – Meadowbank).