Mr. Darren Hall reports

CALIBRE REPORTS PARTIAL SLOPE MOVEMENT AT THE LIMON NORTE OPEN PIT; FULL YEAR PRODUCTION GUIDANCE MAINTAINED

On May 25, 2024, a geotechnical incident occurred on the west wall of Calibre Mining Corp.'s Limon Norte open pit in Nicaragua. The pit wall movement did not impact personnel or equipment; however, a change in Limon Norte open-pit mine sequencing will be required, which will negatively impact second quarter 2024 gold production. All other open-pit and underground operations at Limon are unaffected.

The company currently anticipates Q2 2024 consolidated production to be between 55,000 and 60,000 ounces. With higher-grade ore prioritized in Q3 and Q4, the company's full-year consolidated production guidance remains unchanged at 275,000 to 300,000 ounces.

About Calibre Mining Corp.

Calibre is a Canadian-listed, Americas-focused, growing, mid-tier gold producer with a strong pipeline of development and exploration opportunities across Newfoundland and Labrador in Canada, Nevada and Washington in the United States, and Nicaragua. Calibre is focused on delivering sustainable value for shareholders, local communities and all stakeholders through responsible operations and a disciplined approach to growth. With a strong balance sheet, a proven management team, strong operating cash flow, accretive development projects and district-scale exploration opportunities, Calibre will unlock significant value.

We seek Safe Harbor.