First Interstate BancSystem, Inc.

10-Q Quarter ended 2026-06-30 Aug 3, 2026 8-K Results of operations (earnings release); Regulation FD disclosure; Other events Jul 23, 2026 8-K Director or officer change Jul 16, 2026 8-K Director or officer change Jul 9, 2026 8-K Director or officer change; Amended charter or bylaws; Shareholder vote results May 29, 2026 8-K Director or officer change May 13, 2026 10-Q Quarter ended 2026-03-31 May 7, 2026 8-K Results of operations (earnings release); Regulation FD disclosure; Other events Apr 29, 2026 10-K Fiscal year ended 2025-12-31 Feb 26, 2026 8-K Results of operations (earnings release); Regulation FD disclosure; Other events Jan 28, 2026 8-K Director or officer change Nov 18, 2025 10-Q Quarter ended 2025-09-30 Nov 6, 2025 8-K Results of operations (earnings release); Regulation FD disclosure; Other events Oct 29, 2025 8-K Regulation FD disclosure Oct 16, 2025 8-K Regulation FD disclosure Oct 14, 2025 8-K Director or officer change; Regulation FD disclosure Sep 9, 2025 8-K Director or officer change Sep 2, 2025 8-K/A Director or officer change Aug 29, 2025 8-K Other events Aug 28, 2025 8-K Terminated a material agreement; Other events Aug 18, 2025 8-K Director or officer change Aug 15, 2025 10-Q Quarter ended 2025-06-30 Aug 6, 2025 8-K Results of operations (earnings release); Regulation FD disclosure; Other events Jul 29, 2025 8-K Other events Jul 3, 2025 8-K Entered a material agreement; Took on a direct financial obligation Jun 10, 2025 8-K Regulation FD disclosure; Other events Jun 6, 2025 8-K Regulation FD disclosure Jun 2, 2025 8-K Director or officer change; Regulation FD disclosure Jun 2, 2025 8-K Director or officer change; Amended charter or bylaws; Shareholder vote results May 23, 2025 10-Q Quarter ended 2025-03-31 May 7, 2025 8-K Results of operations (earnings release); Regulation FD disclosure; Other events Apr 29, 2025 8-K Regulation FD disclosure Apr 28, 2025 8-K Director or officer change Mar 19, 2025 10-K Fiscal year ended 2024-12-31 Feb 28, 2025 8-K Director or officer change Feb 26, 2025 8-K Director or officer change; Regulation FD disclosure Feb 25, 2025 8-K Results of operations (earnings release); Regulation FD disclosure; Other events Jan 29, 2025 8-K Results of operations (earnings release); Material impairment Jan 10, 2025 10-Q Quarter ended 2024-09-30 Nov 4, 2024 8-K Results of operations (earnings release); Regulation FD disclosure; Other events Oct 24, 2024