Mr. Daniel Wilton reports

FIRST MINING FILES FINAL BASE SHELF PROSPECTUS AND REGISTRATION STATEMENT

First Mining Gold Corp. has obtained a receipt for a final short form base shelf prospectus filed with the securities regulatory authorities in each of the provinces and territories of Canada, and its corresponding registration statement on Form F-10 has been filed with the U.S. Securities and Exchange Commission under the U.S./Canada multijurisdictional disclosure system, but has not yet become effective. The filing replaces the previous base shelf prospectus of the company dated Jan. 23, 2024.

The filing of the final shelf prospectus and the registration statement is consistent with the company's past practice to provide First Mining with greater financial flexibility. The company has not entered into any agreements or arrangements to authorize or offer any securities (as defined below) at this time.

The final shelf prospectus and the registration statement will allow First Mining to undertake offerings of common shares, preferred shares, warrants, subscription receipts and units, or any combination thereof, up to an aggregate total of $500-million from time to time during the 25-month period that the final shelf prospectus remains effective. The securities may be offered in amounts, at prices and on terms to be determined at the time of sale and, subject to applicable regulations, may include at-the-market transactions, public offerings or strategic investments. The specific terms of any offering of securities, if any, including the use of proceeds from such offering, will be set forth in a shelf prospectus supplement pertaining to such offering to be filed with applicable securities regulatory authorities. The securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective.

Copies of the final shelf prospectus and the registration statement can be found, respectively, under the company's SEDAR+ profile and on EDGAR, or may be obtained by request to Richard Huang, vice-president, corporate development, and corporate secretary, Suite 2070, 1188 West Georgia St., Vancouver, B.C., V6E 4A2, Canada, or to info@firstmininggold.com.

About First Mining Gold Corp.

First Mining is a gold developer advancing two of the largest gold projects in Canada: the Springpole gold project in Northwestern Ontario, where it has commenced a feasibility study and permitting activities are continuing with a final environmental impact statement/environmental assessment for the project submitted in November, 2024, and the Duparquet gold project in Quebec, a preliminary-economic-assessment-stage development project located on the Destor-Porcupine fault zone in the prolific Abitibi region. First Mining also owns the Cameron gold project in Ontario and a 30-per-cent project interest in the Pickle Crow gold project.

We seek Safe Harbor.