Calumet, INC. /De (CLMT) SEC Filings — 2026 1 SEC filing for Calumet, INC. /De (CLMT) in 2026. FilingsCalumet Inc. Securities Sale Proposed — 144 · Apr 1, 2026 ExploreAll CLMT Filings · CLMT 2025 · All 2026 Filings