

Agreement setting out the significant participation of Slate Falls Nation in the responsible development of the Springpole Gold Project in a way that seeks to minimize impacts on the environment and provides direct benefits to the community Enhanced collaboration on aspects related to the environment, training, employment, business opportunities, and financial benefits Agreement signed following a community-based consultation process Commitment to a long-term, mutually beneficial relationship based on respect, inclusion, sustainability and responsibility VANCOUVER, BC, Aug. 25, 2026 /PRNewswire/ -- First Mining Gold Corp. ("First Mining" or the "Company") (TSX: FF) (OTCQX: FFMGF) (FRANKFURT: FMG) is pleased to announce that it has entered into a Project Agreement (the "Project Agreement") with Slate Falls Nation ("Slate Falls" or "SFN") covering the Springpole Gold Project (the "Springpole Project", or the "Project"), located in northwestern Ontario. The Project Agreement sets out a collaborative approach for the development of one of Canada's largest gold resources, through construction, operations, and closure, in a manner that respects the environment and provides direct benefits to the First Nation.

VANCOUVER, BC, Aug. 12, 2026 /PRNewswire/ -- First Mining Gold Corp. ("First Mining" or the "Company") (TSX: FF) (OTCQX: FFMGF) (FRANKFURT: FMG) reports its second quarter financial results for the quarter ended June 30, 2026. The financial statements and management's discussion and analysis ("MD&A") are available on First Mining's website at www.firstmininggold.com/investors/reports-filings/financials/ and have been posted under the Company's profile on SEDAR+ at www.sedarplus.ca and EDGAR at www.sec.gov.

VANCOUVER, BC, June 30, 2026 /PRNewswire/ - First Mining Gold Corp. ("First Mining" or the "Company") (TSX: FF) (OTCQX: FFMGF) (FRANKFURT: FMG) is pleased to announce that the Springpole Gold Project (the "Project" or the "Springpole Project") has received its Federal Environmental Assessment ("EA") approval. The Honourable Julie Aviva Dabrusin, Federal Minister of the Environment, Climate Change and Nature, announced, on behalf of Canada, that the Company's Springpole Project may proceed (the "Decision Statement").

VANCOUVER, BC, June 30, 2026 /PRNewswire/ - First Mining Gold Corp. ("First Mining" or the "Company") (TSX: FF) (OTCQX: FFMGF) (FRANKFURT: FMG) is pleased to announce that it has entered into an agreement (the "Term Sheet Agreement") with Slate Falls Nation ("Slate Falls" or "SFN") containing the key terms upon which the parties will diligently negotiate a final project agreement (the "Project Agreement") for the Springpole Gold Project in northwestern Ontario, Canada ("Springpole" or the "Project"). The Term Sheet Agreement details SFN's development parameters for the Project, a collaborative process for advancing regulatory approvals and environmental protections, and mechanisms and structures for SFN to participate in future project design optimizations focused on robust environmental sustainability, as well as to participate in financial and business opportunities at the future mine.

TREATY 9 TERRITORY, ON, June 16, 2026 /PRNewswire/ - Cat Lake First Nation ("CLFN") and First Mining Gold Corp. ("First Mining" or the "Company") (TSX: FF) (OTCQX: FFMGF) (FRANKFURT: FMG) have finalized a landmark agreement to mobilize development of an all-season access road to Cat Lake First Nation in northwestern Ontario. The route connecting Cat Lake First Nation to Sioux Lookout via the Vermilion River Road will utilize a mix of existing forestry roads and new construction to minimize costs while maximizing transportation and regional socio-economic benefits.

Cat Lake First Nation and Lac Seul First Nation have completed their groundbreaking Anishnaabe Led Impact Assessment Process and authorize the Springpole Gold Project subject to 35 negotiated terms First Mining, Cat Lake First Nation and Lac Seul First Nation have finalized a Term Sheet Agreement regarding the key benefits, environmental protection measures and conditions VANCOUVER, BC, June 16, 2026 /PRNewswire/ - First Mining Gold Corp. ("First Mining" or the "Company") (TSX: FF) (OTCQX: FFMGF) (FRANKFURT: FMG) announces that following the completion of the Anishnaabe Led Impact Assessment ("ALIA") Process for the Springpole Gold Project (the "Springpole Project", or the "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 (the "Term Sheet Agreement"). Informed by the ALIA, there are 35 negotiated terms secured in the Term Sheet Agreement including: Environmental & 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.

VANCOUVER, BC, June 9, 2026 /PRNewswire/ - First Mining Gold Corp. ("First Mining" or the "Company") (TSX: FF) (OTCQX: FFMGF) (FRANKFURT: FMG) is pleased to announce the voting results from the Company's annual general meeting of shareholders held in Vancouver on June 9, 2026 (the "2026 AGM"). A total of 501,078,315 common shares of First Mining were represented at the 2026 AGM, representing 36.20% of the Company's outstanding common shares as at the record date of April 21, 2026.

VANCOUVER, BC, May 21, 2026 /PRNewswire/ - First Mining Gold Corp. ("First Mining" or the "Company") (TSX: FF) (OTCQX: FFMGF) (FRANKFURT: FMG) is pleased to announce the commencement of project activities and the signing of a new drilling partnership at its Duparquet Gold Project ("Duparquet Project" or the "Project") located in the Abitibi region of Quebec, Canada, with Forage Anicinape ("Forage Anicinape"), an Indigenous-led drilling company established through a partnership between Forages Rouillier and the Coopérative de solidarité de Pikogan, representing the Pikogan First Nation. The partnership reflects First Mining's continued focus on building meaningful relationships with Indigenous communities and businesses while advancing exploration and development activities at Duparquet.