UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of May 2026

Commission File Number 000-55607

FIRST MINING GOLD CORP.

(Translation of registrant’s name into English)

Suite 2070, 1188 West Georgia Street

Vancouver, British Columbia V6E 4A2

Canada

(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 ☒

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ☐

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.

	FIRST MINING GOLD CORP.

Date: May 1, 2026	By:	/s/ “Lisa Peterson”
	Name:	Lisa Peterson
	Title:	Chief Financial Officer

EXHIBIT INDEX

Exhibit No.		Description
99.1		Notice of Annual General Meeting
99.2		Management Information Circular
99.3		Form of Proxy
99.4		Notice-and-Access Notification to Shareholders

First Mining Gold Corp. 6-K