6-K

Fortuna Mining Corp. (FSM)

6-K 2025-10-27 For: 2025-10-27
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Added on April 11, 2026

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 October 2025

Commission File Number 001-35297

Fortuna Mining 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.

Fortuna Mining Corp.
Date:  October 27, 2025 (Registrant)
By: /s/  "Jorge Ganoza Durant"
Jorge Ganoza Durant
President and CEO

Exhibits:

99.1 News Release dated October 27, 2025

Exhibit 99.1

NEWS RELEASE

Fortuna to release third quarter 2025 financialresults on November 5, 2025; Conference call at 12 p.m. Eastern time on November 6, 2025

Vancouver, October 27, 2025: Fortuna Mining Corp. (NYSE: FSM | TSX: FVI) announces that it will release its financial statements and MD&A for the third quarter of 2025 on Wednesday, November 5, 2025, after market close.

A conference call to discuss the financial and operational results will be held on Thursday, November 6, 2025, at 9:00 a.m. Pacific time | 12:00 p.m. Eastern time. Hosting the call will be Jorge A. Ganoza, President and CEO, Luis D. Ganoza, Chief Financial Officer, Cesar Velasco, Chief Operating Officer - Latin America, and David Whittle, Chief Operating Officer - West Africa.

Shareholders, analysts, media and interested investors are invited to listen to the live conference call by logging onto the webcast at: https://www.webcaster5.com/Webcast/Page/1696/53144 or over the phone by dialing in just prior to the starting time.

Conference call details:

Date: Thursday, November 6, 2025

Time: 9:00 a.m. Pacific time | 12:00 p.m. Eastern time

Dial in number (Toll Free): +1.888.506.0062

Dial in number (International): +1.973.528.0011

Access code: 360013

Replay number (Toll Free): +1.877.481.4010

Replay number (International): +1.919.882.2331

Replay passcode: 53144

Playback of the earnings call will be available until Thursday, November 20, 2025. Playback of the webcast will be available until Friday, November 6, 2026. In addition, a transcript of the call will be archived on the Company’s website.

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

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