Mr. Dan Wilton reports

FIRST MINING ANNOUNCES SPRINGPOLE PROJECT AUTHORIZATION FROM CAT LAKE FIRST NATION AND LAC SEUL FIRST NATION FOLLOWING THE COMPLETION OF THE ANISHNAABE LED IMPACT ASSESSMENT

Following the completion of First Mining Gold Corp.'s Anishnaabe Led Impact Assessment (ALIA) process for the Springpole gold project undertaken by Cat Lake First Nation (Cat Lake or CLFN) and Lac Seul First Nation (Lac Seul or LSFN), First Mining has been informed by chiefs and councils of Cat Lake and Lac Seul that the nations authorize the Springpole project subject to important terms that have been captured in an agreement between First Mining, CLFN and LSFN. Informed by the ALIA, there are 35 negotiated terms secured in the term sheet agreement including:

• Environmental and water protections: enhanced management of mine rock and tailings, water treatment, and moving the operational treated water discharge location to protect Springpole and Birch lakes;
• Cultural and socioeconomic safeguards: key conditions addressing impacts identified through the ALIA supporting culture and well-being;
• Economic participation: significant financial benefits, including revenue sharing, guaranteed value in procurement opportunities, milestone payments and annual capacity funding for direct participation in project activities;
• Community healing: federal and proponent funding to support essential on-the-land healing and addictions treatment.

"We are grateful to Cat Lake and Lac Seul First Nations, leadership, and their advisers for the enormous amount of time, energy and diligence they put into the ALIA process," said Dan Wilton, chief executive officer of First Mining. "We are proud to have supported this groundbreaking work and have truly valued the opportunity to collaborate and learn from the process. We look forward to continuing our journey together."

The project authorization by Cat Lake and Lac Seul chiefs and councils is conditional on finalizing the term sheet agreement into a binding Springpole project agreement.

About Cat Lake First Nation

Bizhiw-zaaga'igan or Cat Lake First Nation is an Anishinaabe community in Northwestern Ontario, located approximately 180 kilometres north of Sioux Lookout. As of February, 2024, it has 830 registered members, with 653 living in Cat Lake First Nation reserve lands. Cat Lake members traditionally speak Anishinaabemowin. Cat Lake First Nation's reserve lands and traditional territory fall within the boundaries of Treaty 9. However, Cat Lake First Nation asserts it has never signed a treaty with the Crown.

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 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 a 20-per-cent project interest in the Pickle Crow gold project and large equity interest in Seva Mining Corp.

First Mining was established in 2015 by Keith Neumeyer, founder and chief executive officer of First Majestic Silver.

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