FIRST INTERSTATE BANCSYSTEM INC - FIBK

All tracked SEC files for this issuer. Showing up to 200 latest records.
Need parsed ownership details (13D/13G with shares/percent)? Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).

Files summary

Total files loaded: 46
Latest filed: Sep 16, 2026
Form Count
4 30
8-K 8
144 5
SCHEDULE 13G/A 2
SCHEDULE 13G 1

Latest files

Filed Form Report period Accession SEC
Sep 16, 2026 8-K Sep 14, 2026 0000860413-26-000092 View
Sep 16, 2026 4 Sep 16, 2026 0001493152-26-042992 View
Sep 16, 2026 4 Sep 14, 2026 0002154828-26-000005 View
Sep 14, 2026 4 Sep 14, 2026 0001493152-26-042633 View
Sep 14, 2026 4 Sep 11, 2026 0001493152-26-042536 View
Sep 11, 2026 144 0001958244-26-000591 View
Aug 21, 2026 8-K Aug 21, 2026 0000860413-26-000088 View
Jul 28, 2026 4 Jul 27, 2026 0001493152-26-035055 View
Jul 24, 2026 4 Jul 22, 2026 0001196952-26-000004 View
Jul 24, 2026 4 Jul 22, 2026 0002146309-26-000004 View
Jul 23, 2026 8-K Jul 23, 2026 0000860413-26-000081 View
Jul 16, 2026 4 Jul 16, 2026 0001493152-26-033609 View
Jul 16, 2026 144 0001958244-26-000458 View
Jul 16, 2026 8-K Jul 13, 2026 0000860413-26-000078 View
Jul 09, 2026 8-K Jul 09, 2026 0000860413-26-000075 View
Jun 18, 2026 4 Jun 18, 2026 0001493152-26-029403 View
Jun 18, 2026 4 Jun 18, 2026 0001493152-26-029300 View
Jun 18, 2026 144 0001950047-26-006304 View
Jun 18, 2026 4 Jun 17, 2026 0001493152-26-029217 View
Jun 17, 2026 144 0001958244-26-000390 View
Jun 04, 2026 4 Jun 04, 2026 0001493152-26-027328 View
Jun 03, 2026 4 Jun 01, 2026 0000860413-26-000052 View
Jun 03, 2026 4 Jun 01, 2026 0000860413-26-000055 View
Jun 03, 2026 4 Jun 01, 2026 0000860413-26-000069 View
Jun 03, 2026 4 Jun 01, 2026 0001199246-26-000002 View
Jun 03, 2026 4 Jun 01, 2026 0001697127-26-000007 View
Jun 03, 2026 4 Jun 01, 2026 0001838577-26-000007 View
Jun 03, 2026 4 Jun 01, 2026 0001548048-26-000002 View
Jun 03, 2026 4 Jun 01, 2026 0001594614-26-000002 View
Jun 03, 2026 4 Jun 01, 2026 0001284209-26-000002 View
Jun 03, 2026 4 Jun 01, 2026 0002129553-26-000006 View
Jun 03, 2026 4 Jun 01, 2026 0002071416-26-000006 View
Jun 03, 2026 4 Jun 01, 2026 0002129338-26-000007 View
Jun 03, 2026 4 Jun 01, 2026 0001572624-26-000002 View
Jun 03, 2026 4 Jun 01, 2026 0001812520-26-000003 View
Jun 03, 2026 4 Jun 01, 2026 0002003084-26-000006 View
Jun 03, 2026 4 Jun 01, 2026 0002090710-26-000004 View
May 29, 2026 8-K May 27, 2026 0000860413-26-000048 View
May 15, 2026 SCHEDULE 13G/A 0000902219-26-000149 View
May 13, 2026 8-K May 11, 2026 0000860413-26-000041 View
May 01, 2026 4 Apr 30, 2026 0001493152-26-020876 View
Apr 30, 2026 144 0001958244-26-000242 View
Apr 29, 2026 8-K Apr 29, 2026 0000860413-26-000034 View
Apr 29, 2026 SCHEDULE 13G 0002100121-26-000410 View
Mar 27, 2026 4 Mar 26, 2026 0001493152-26-013130 View
Mar 26, 2026 SCHEDULE 13G/A 0000102909-26-000489 View