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FORTUNA MINING CORP.

For the period ended Dec 31, 2025. Filed Mar 26, 2026.

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About this filing

The yearly report of certain Canadian companies, filed under a joint US and Canadian system. It is the main yearly account these companies give US investors, largely as filed in Canada.

FY2025 · Filed Mar 26, 2026

Use the contents to explore the available documents and sections.

FSM$9.62+1.5%Stored close · as of Nov 6, 2026
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Contents

EX-99.1 · Documents Incorporated by Reference

Documents Incorporated by Reference

The information provided in this AIF is supplemented by disclosure contained in the documents listed below which are incorporated by reference into this AIF. These documents must be read together with the AIF in order to provide full, true and plain disclosure of all material facts relating to Fortuna. The documents listed below are not contained within or attached to this document. The documents may be accessed on the Company’s SEDAR+ profile at www.sedarplus.ca and on the Company’s EDGAR profile at www.sec.gov.

DocumentEffective DateDate Filed on SEDAR+ websiteDocument Category on the SEDAR+ website
Technical Report, Séguéla Gold Mine, Côte d’IvoireDecember 31, 2025March 23, 2026Technical Report(s)
Technical Report, Lindero Mine and Arizaro Project, ArgentinaDecember 31, 2022March 28, 2023Technical Report(s)
Technical Report, Caylloma Mine, PeruDecember 31, 2023February 16, 2024Technical Report(s)
Technical Report, Diamba Sud Gold Project, SenegalOctober 15, 2025November 26, 2025Technical Report(s)
ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.