{"filing":{"accession_number":"0001279569-26-000879","cik":"0001641229","ticker":"FFMGF","company_name":"First Mining Gold Corp.","form":"6-K","filing_date":"2026-09-14","report_date":"2026-09-14","primary_document":"firstmining6k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1641229/000127956926000879/firstmining6k.htm"},"events":[{"id":33154,"run_id":30479,"accession_number":"0001279569-26-000879","anchor_item_number":"EX-99.1","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"summary":"First Mining announces its inclusion in the MVIS Global Junior Gold Miners Index (MVGDXJ) and the VanEck Junior Gold Miners ETF (GDXJ), effective September 18, 2026. The company states this will \"enhance visibility among institutional and retail investors, improve trading liquidity, and increase exposure to global capital markets.\" While this is a capital-markets and investor-relations milestone rather than a discrete operational or financial event (not earnings, M\u0026A, debt, or governance), it is material to investors as it affects market accessibility and liquidity for the stock. The event does not fit a named category but is clearly operational/strategic in nature.","company_name":"First Mining Gold Corp.","ticker":"FFMGF","filing_date":"2026-09-14","form":"6-K","submitted_at":null,"items":[{"id":36523,"accession_number":"0001279569-26-000879","item_number":"EX-99.1","item_title":"ex991.htm","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"First Mining announces its inclusion in the MVIS Global Junior Gold Miners Index (MVGDXJ) and the VanEck Junior Gold Miners ETF (GDXJ), effective September 18, 2026. The company states this will \"enhance visibility among institutional and retail investors, improve trading liquidity, and increase exposure to global capital markets.\" While this is a capital-markets and investor-relations milestone rather than a discrete operational or financial event (not earnings, M\u0026A, debt, or governance), it is material to investors as it affects market accessibility and liquidity for the stock. The event does not fit a named category but is clearly operational/strategic in nature.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-09-14T12:16:39.028055+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":36523,"accession_number":"0001279569-26-000879","item_number":"EX-99.1","item_title":"ex991.htm","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"First Mining announces its inclusion in the MVIS Global Junior Gold Miners Index (MVGDXJ) and the VanEck Junior Gold Miners ETF (GDXJ), effective September 18, 2026. The company states this will \"enhance visibility among institutional and retail investors, improve trading liquidity, and increase exposure to global capital markets.\" While this is a capital-markets and investor-relations milestone rather than a discrete operational or financial event (not earnings, M\u0026A, debt, or governance), it is material to investors as it affects market accessibility and liquidity for the stock. The event does not fit a named category but is clearly operational/strategic in nature.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-09-14T12:16:39.028055+00:00","company_name":"First Mining Gold Corp.","ticker":"FFMGF","filing_date":"2026-09-14"}]}