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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 6-K

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

For the month of October 2026

Commission File Number 001-35297

Fortuna Mining Corp.

(Translation of registrant’s name into English)

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

(Address of principal executive office)

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

FORM 20-F ¨\tFORM\n40-F þ

SIGNATURES

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

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

	Fortuna Mining Corp.
Date: October 20, 2026	(Registrant)


	By:	/s/ \"Jorge Ganoza Durant\"
		Jorge Ganoza Durant
		President and CEO

Exhibits:

\n\n

99.1

News Release dated October 20, 2026

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