0000040729 2026-09-16 2026-09-16 false 0000040729 8-K 2026-09-16 1-3754 Ally Financial Inc. DE 38-0572512 Ally Detroit Center 500 Woodward Avenue Floor 10 Detroit MI 48226 (866) 710-4623 false false false false Common Stock, par value $0.01 per share ALLY NYSE false