0002013745 2026-09-11 2026-09-11 Calumet, Inc. /DE false 0002013745 8-K 2026-09-11 DE 001-42172 36-5098520 1060 N Capitol Ave Suite 6-401 Indianapolis IN 46204 (317) 328-5660 false false false false Common Stock, par value $0.01 per share CLMT NASDAQ false