6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANTTO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of February 2026

Commission File Number 001-35297

FortunaMining Corp.

(Translation of registrant’s name into English)

1111 Melville Street, Suite 820, Vancouver, British Columbia, Canada V6E 3V6

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

FORM 20-F   ¨                      FORM 40-F  þ

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Exhibits:

Exhibit99.1

NEWS RELEASE

Fortuna Submits Exploitation Permit Application for the Diamba Sud Gold Project, Senegal

Vancouver, British Columbia, February 10, 2026: Fortuna Mining Corp. (NYSE: FSM | TSX: FVI) announces that it submitted an application for an exploitation permit for the Diamba Sud Gold Project to the Ministry of Energy, Petroleum, and Mines on February 4, 2026.

The Company continues to advance early works and engineering at Diamba Sud, including site preparation activities and detailed engineering programs designed to de-risk critical path activities and support the feasibility study. Fortuna also plans to publish an updated Mineral Resource estimate for Diamba Sud by the end of the month. This update will form the basis for the estimation of Mineral Reserves to be used in the feasibility study and will support the evaluation of a potential construction decision targeted for mid-2026. Robust project economics were demonstrated in the Preliminary Economic Assessment (“PEA”) completed in October 2025 (refer to Fortuna news release dated October 15, 2025).

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

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Forward looking Statements

This news release contains forward-lookingstatements which constitute “forward-looking information” within the meaning of applicable Canadian securities legislationand “forward-looking statements” within the meaning of the “safe harbor” provisions of the Private SecuritiesLitigation Reform Act of 1995 (collectively, “Forward-looking Statements”). All statements included herein, other than statementsof historical fact, are Forward-looking Statements and are subject to a variety of known and unknown risks and uncertainties which couldcause actual events or results to differ materially from those reflected in the Forward-looking Statements. The Forward-looking Statementsin this news release may include, without limitation, statements that the timing for a construction decision at the Diamba Sud projectis targeted for mid-2026, which is subject to the receipt of all required permits, including an ESIA permit and an exploitation permit;the continued advancement of an early works program including site preparation activities and a detailed engineering program which areintended to de-risk execution and support the feasibility study; the timing of an updated Mineral Resource estimate for the Project expectedby the end of February 2026; continued exploration activities at the Project leading to the conversion of Mineral Resources to MineralReserves; and the preparation of a feasibility study for the Diamba Sud project targeted for mid-2026; statements that the PEA demonstratesrobust economics for the Project; statements about the Company’s business strategies, plans and outlook; the Company’s plansfor its mines and mineral properties; changes in general economic conditions and financial markets; the impact of inflationary pressureson the Company’s business and operations; the future results of exploration activities; expectations with respect to metal gradeestimates and the impact of any variations relative to metals grades experienced; assumed and future metal prices; the merit of the Company’smines and mineral properties; and the future financial or operating performance of the Company. Often, but not always, these Forward-lookingStatements can be identified by the use of words such as “estimated”, “potential”, “open”, “future”, “assumed”, “projected”, “proposed”, “used”, “detailed”, “has been”, “gain”, “planned”, “reflecting”, “will”, “anticipated”, “estimated” “containing”, “remaining”, “to be”, or statements that events, “could” or “should”occur or be achieved and similar expressions, including negative variations.

Forward-looking Statements involve known andunknown risks, uncertainties and other factors which may cause the actual results, performance, or achievements of the Company to be materiallydifferent from any results, performance or achievements expressed or implied by the Forward-looking Statements. Such uncertainties andfactors include, among others, operational risks associated with mining and mineral processing; uncertainty relating to Mineral Resourceand Mineral Reserve estimates; uncertainty relating to capital and operating costs, production schedules and economic returns; risks relatingto the Company’s ability to replace its Mineral Reserves; risks related to the conversion of Mineral Resources to Mineral Reserves;risks associated with mineral exploration and project development; uncertainty relating to the repatriation of funds as a result of currencycontrols; environmental matters including obtaining or renewing environmental permits and potential liability claims; uncertainty relatingto nature and climate conditions; laws and regulations regarding the protection of the environment (including greenhouse gas emissionreduction and other decarbonization requirements and the uncertainty surrounding the interpretation of omnibus Bill C-59 and the relatedamendments to the Competition Act (Canada); risks associated with political instability and changes to the regulations governing the Company’sbusiness operations; changes in national and local government legislation, taxation, controls, regulations and political or economic developmentsin countries in which the Company does or may carry on business; risks associated with war, hostilities or other conflicts, such as theUkrainian – Russian, and Israeli – Hamas conflicts, and the impacts they may have on global economic activity; risks relatingto the termination of the Company’s mining concessions in certain circumstances; developing and maintaining relationships with localcommunities and stakeholders; risks associated with losing control of public perception as a result of social media and other web-basedapplications; potential opposition to the Company’s exploration, development and operational activities; risks related to the Company’sability to obtain adequate financing for planned exploration and development activities; property title matters; risks related to theability to retain or extend title to the Company’s mineral properties; risks relating to the integration of businesses and assetsacquired by the Company; impairments; risks associated with climate change legislation; reliance on key personnel; adequacy of insurancecoverage; operational safety and security risks; legal proceedings and potential legal proceedings; uncertainties relating to generaleconomic conditions; risks relating to a global pandemic, which could impact the Company’s business, operations, financial conditionand share price; competition; fluctuations in metal prices; risks associated with entering into commodity forward and option contractsfor base metals production; fluctuations in currency exchange rates and interest rates; tax audits and reassessments; risks related tohedging; uncertainty relating to concentrate treatment charges and transportation costs; sufficiency of monies allotted by the Companyfor land reclamation; risks associated with dependence upon information technology systems, which are subject to disruption, damage, failureand risks with implementation and integration; labor relations issues; as well as those factors discussed under “Risk Factors”in the Company's Annual Information Form for the fiscal year ended December 31, 2024. Although the Company has attempted to identify importantfactors that could cause actual actions, events, or results to differ materially from those described in Forward-looking Statements, theremay be other factors that cause actions, events or results to differ from those anticipated, estimated or intended.

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Forward-looking Statements contained hereinare based on the assumptions, beliefs, expectations and opinions of management, including, but not limited to, the timing of the receiptof the required permits for the Diamba Sud Project will be obtained in line with expected timelines; the accuracy of the Company’scurrent Mineral Resource and Mineral Reserve estimates; that the Company’s activities will be conducted in accordance with the Company’spublic statements and stated goals; that there will be no material adverse change affecting the Company, its properties or its productionestimates (which assume accuracy of projected ore grade, mining rates, recovery timing, and recovery rate estimates and may be impactedby unscheduled maintenance, labor and contractor availability and other operating or technical difficulties); the duration and effectof global and local inflation; the duration and impacts of geo-political uncertainties on the Company’s production, workforce, business,operations and financial condition; the expected trends in mineral prices, inflation and currency exchange rates; that all required approvalsand permits will be obtained for the Company’s business and operations on acceptable terms; that there will be no significant disruptionsaffecting the Company's operations and such other assumptions as set out herein. Forward-looking Statements are made as of the date hereofand the Company disclaims any obligation to update any Forward-looking Statements, whether as a result of new information, future events,or results or otherwise, except as required by law. There can be no assurance that these Forward-looking Statements will prove to be accurate,as actual results and future events could differ materially from those anticipated in such statements. Accordingly, investors should notplace undue reliance on Forward-looking Statements.

Cautionary Note to United States InvestorsConcerning Estimates of Reserves and Resources

All reserve and resource estimates includedin this news release have been prepared in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects ("NI43-101") and the Canadian Institute of Mining, Metallurgy, and Petroleum Definition Standards on Mineral Resources and Mineral Reserves.NI 43-101 is a rule developed by the Canadian Securities Administrators that establishes standards for public disclosure by a Canadiancompany of scientific and technical information concerning mineral projects. All Mineral Reserve and Mineral Resource estimates containedin the technical disclosure have been prepared in accordance with NI 43-101 and the Canadian Institute of Mining, Metallurgy and PetroleumDefinition Standards on Mineral Resources and Reserves. Canadian standards, including NI 43-101, differ significantly from the requirementsof the Securities and Exchange Commission, and mineral reserve and resource information included in this news release may not be comparableto similar information disclosed by U.S. companies.

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