First Mining Gold (FFMGF) adds technical report via Form 6-K filing

Rhea-AI Filing Summary

First Mining Gold Corp. filed a Form 6-K as a foreign private issuer for December 2025. The submission mainly serves as a cover for additional documents rather than providing new financial results. The company furnished a technical report as Exhibit 99.1, which is listed in the exhibit index.

Exhibits 99.1 and 99.2 are incorporated by reference into First Mining Gold Corp.’s existing Form F-10 registration statement (File No. 333-231801). The report is signed on behalf of the company by Richard Huang, VP, Corporate Development & Corporate Secretary.

Form 6-K: How Foreign Companies Report to the SEC →

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 December 2025

Commission File Number: 000-55607

First Mining Gold Corp.

(Translation of registrant’s name into English)

Suite 2070, 1188 West Georgia Street, Vancouver, B.C., V6E 4A2

(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): ☐

DOCUMENTS INCORPORATED BY REFERENCE

Exhibits 99.1 and 99.2 to this Report on Form 6-K are hereby incorporated by reference as Exhibits to the Registration Statement on Form F-10 of First Mining Gold Corp. (File No. 333-231801).

DOCUMENTS FILED AS PART OF THIS FORM 6-K

Exhibits		Description
99.1		Technical Report

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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.
	(Registrant)
Date: December, 2025	/s/ Richard Huang
	Richard Huang
	VP, Corporate Development & Corporate Secretary

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EXHIBIT INDEX

Exhibits		Description
99.1		Technical Report

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FAQ

What does First Mining Gold Corp. (FFMGF) report in this Form 6-K?

First Mining Gold Corp. uses this Form 6-K to furnish a technical report as Exhibit 99.1. The filing functions mainly as a cover document and does not present new earnings or financial data.

How is the technical report in First Mining Gold Corp.’s Form 6-K used?

The technical report, filed as Exhibit 99.1, is incorporated by reference into First Mining Gold Corp.’s Form F-10 registration statement. This links the report’s contents directly to the existing Canadian shelf registration.

Which exhibits from First Mining Gold Corp.’s Form 6-K are incorporated by reference?

Exhibits 99.1 and 99.2 from the Form 6-K are incorporated by reference into First Mining Gold Corp.’s Form F-10 registration statement, file number 333-231801, extending that registration’s supporting documentation.

Who signed First Mining Gold Corp.’s December 2025 Form 6-K?

The Form 6-K is signed on behalf of First Mining Gold Corp. by Richard Huang. He is identified as the company’s VP, Corporate Development and Corporate Secretary in the signature block.

Does First Mining Gold Corp.’s Form 6-K include a technical report exhibit?

Yes, the Form 6-K lists a technical report as Exhibit 99.1 in the document’s exhibit index. This report forms part of the materials incorporated into the company’s Form F-10 registration statement.