0001691303 us-gaap:PreferredStockMember 2026-08-05 2026-08-05 0001691303 2026-08-05 2026-08-05 0001691303 us-gaap:CommonStockMember 2026-08-05 2026-08-05 0001691303 false 8-K 2026-08-05 Warrior Met Coal, Inc. DE 001-38061 81-0706839 16243 Highway 216 Brookwood AL 35444 205 554-6150 Not Applicable false false false false Common Stock, par value $.01 per share HCC NYSE Rights to Purchase Series A Junior Participating Preferred Stock, par value $0.01 per share true NYSE false