Fortuna Files PEA Technical Report Highlighting the Development Potential of the Diamba Sud Gold Project, Senegal

Rhea-AI Summary

Fortuna Mining (NYSE: FSM) filed a National Instrument 43-101 technical report titled “Diamba Sud Gold Project, Kédougou Region, Senegal” with an effective date of October 15, 2025. The report supports the Preliminary Economic Assessment previously announced on October 15, 2025 and is available on the company website, SEDAR+, and EDGAR.

This filing formalizes disclosure under Canadian standards and makes the PEA technical details available to investors and regulators.

VANCOUVER, British Columbia, Nov. 26, 2025 (GLOBE NEWSWIRE) -- Fortuna Mining Corp. (NYSE: FSM | TSX: FVI) is pleased to announce that, in accordance with National Instrument 43-101 -  Standards of Disclosure for Mineral Projects, it has filed the technical report entitled “Diamba Sud Gold Project, Kédougou Region, Senegal”, with an effective date of October 15, 2025  (the “Technical Report”), supporting the results of the Preliminary Economic Assessment (PEA) previously announced in Fortuna’s news release dated October 15, 2025.

The Technical Report is available on the Company’s website, on SEDAR+ and on EDGAR under the Company’s profile.  

About Fortuna Mining Corp.

Fortuna Mining Corp. is a Canadian precious metals mining company with three operating mines and a portfolio of exploration projects in Argentina, Côte d'Ivoire, Mexico, and Peru, as well as the Diamba Sud Gold Project in Senegal. Sustainability is at the core of our operations and stakeholder relationships. We produce gold and silver while creating long-term shared value through efficient production, environmental stewardship, and social responsibility. For more information, please visit our website at www.fortunamining.com

ON BEHALF OF THE BOARD

Jorge A. Ganoza
President, CEO, and Director
Fortuna Mining Corp.

Investor Relations:

Carlos Baca | info@fmcmail.com | fortunamining.com | X | LinkedIn | YouTube

FAQ

What did Fortuna Mining (FSM) file on November 27, 2025 regarding Diamba Sud?

Fortuna filed a NI 43-101 technical report titled “Diamba Sud Gold Project, Kédougou Region, Senegal” with an effective date of October 15, 2025.

Where can investors access the Diamba Sud technical report for FSM?

The report is available on Fortuna’s website, on SEDAR+, and on EDGAR under the company profile.

Does the filed technical report for Diamba Sud relate to a Preliminary Economic Assessment for FSM?

Yes. The technical report supports the PEA previously announced on October 15, 2025.

What is the effective date of the Diamba Sud technical report filed by FSM?

The technical report has an effective date of October 15, 2025.

Which regulatory standard did Fortuna follow when filing the Diamba Sud technical report?

Fortuna filed the report in accordance with National Instrument 43-101 disclosure standards.