Arcelormittal (MT) SEC Filings — 2026 2 SEC filings for Arcelormittal (MT) in 2026. FilingsArcelormittal 6-K Filing — 6-K · Apr 3, 2026 ArcelorMittal Files 6-K Report — 6-K · Mar 30, 2026 ExploreAll MT Filings · MT 2025 · All 2026 Filings