0001675149 2026-10-15 2026-10-15 0001675149 false 8-K 2026-10-15 ALCOA CORPORATION DE 1-37816 81-1789115 201 Isabella Street, Suite 500 Pittsburgh PA 15212-5858 (412) 315-2900 Not Applicable false false false false Common Stock, par value $0.01 per share AA NYSE false