Duparquet Gold Project Drilling Program

VANCOUVER – First Mining Gold Corp. reported on its Duparquet Gold Project located in the Abitibi region of Quebec, Canada. The Company completed its 2025 drilling program at the Project in October, totaling 16,577 m of drilling. The results reported here are mainly from the Miroir target, a high-priority discovery zone first intersected in the 2024 drill program and subsequently advanced through follow-up drilling in 2025. The latest results extend Miroir mineralization to a vertical depth of 250 m, representing an additional 150 m of down-dip expansion beyond previous drilling. The target currently spans approximately 150 m of strike length and 250 m in depth and remains open at depth and along strike to the east.

Assay results from drill hole DUP25-081 have returned 1.56 g/t Au over 33.15 m, including 3.18 g/t Au over 7.60 m. Drill hole DUP25-085 returned 3.74 g/t Au over 15.5 m and 7.18 g/t over 8.0 m, including 30.58 g/t over 1.65 m.  DUP25-090 returned 4.08 g/t Au over 12.0 m, including 11.20 g/t Au over 1.0 m. Drilling at the Miroir target has continuously been building potential for a strong resource growth zone returning multiple robust gold intercepts, and it will be a key target to advance in the 2026 drilling campaign.

“The results from our 2025 drilling program at Duparquet and around the Miroir target continue to demonstrate potential for the Project,” said, Dan Wilton, CEO. “The Project’s near-surface mineralization footprint continues to be strengthened with our ongoing drilling success while further extending the target at depth, demonstrating Miroir’s potential as a resource-growth area at the Duparquet Project. In addition to our exploration program, we are excited to embark on our environmental baseline program to continue advancing the Project.  The development and reclamation of this Project site represent a tremendous opportunity not only for First Mining, but for the provincial government, City of Duparquet, neighbouring communities and First Nation members.”