Mr. Daniel Wilton reports

FIRST MINING FILES FINAL BASE SHELF PROSPECTUS AND REGISTRATION STATEMENT

First Mining Gold Corp. has obtained a receipt for as final short form base shelf prospectus filed with the securities regulatory authorities in each of the provinces of Canada, and its corresponding registration statement on Form F-10 has been filed with the United States Securities and Exchange Commission (the SEC) and become effective under the U.S./Canada multijurisdictional disclosure system.

First Mining has filed the final shelf prospectus and the registration statement to provide the company with greater financial flexibility going forward, but 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 (including common shares issued on a flow-through basis), preferred shares, warrants, subscription receipts and units (collectively, the securities), or any combination thereof, up to an aggregate total of $100-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.

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, suite 2070, 1188 West Georgia St., Vancouver, B.C., V6E 4A2, Canada (telephone: 1-844-306-8827), 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 draft environmental impact statement (EIS) for the project published in June, 2022, and the Duparquet 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 portfolio of gold project interests, including the Pickle Crow gold project (being advanced in partnership with FireFly Metals Ltd.), the Hope Brook gold project (being advanced in partnership with Big Ridge Gold Corp.) and a large equity interest in Treasury Metals Inc.

We seek Safe Harbor.