Location
Billings, MT
Signature
SUSAN SCOTT HEYNEMAN TRUST, SUSAN HEYNEMAN & FIRST INTERSTATE WEALTH MANAGEMENT CO-TRUSTEES, By: /s/ Timothy Leuthold, Attorney-in-Fact for Reporting Person
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by Susan Scott Heyneman Trust, Susan Heyneman & First Interstate Wealth Management Co-Trustees:

Company Role Class Num Shares Value Price $ Report Date Ownership
FIRST INTERSTATE BANCSYSTEM INC 10%+ Owner Common Stock 224,460 $7,351,065 $32.75 01 Dec 2025 Indirect

Insider Reports Filed by Susan Scott Heyneman Trust, Susan Heyneman & First Interstate Wealth Management Co-Trustees

Symbol Company Period Transactions Value $ Form Type Role Filing Time
FIBK FIRST INTERSTATE BANCSYSTEM INC 01 Dec 2025 1 -$327,500 4 10%+ Owner 01 Dec 2025, 12:58
FIBK FIRST INTERSTATE BANCSYSTEM INC 03 Nov 2025 1 -$309,900 4 10%+ Owner 03 Nov 2025, 18:18
FIBK FIRST INTERSTATE BANCSYSTEM INC 09 Sep 2025 4 -$315,900 4 10%+ Owner 03 Oct 2025, 13:25
FIBK FIRST INTERSTATE BANCSYSTEM INC 02 Sep 2025 1 -$322,800 4 10%+ Owner 02 Sep 2025, 15:47
FIBK FIRST INTERSTATE BANCSYSTEM INC 01 Aug 2025 1 -$1,532,300 4 10%+ Owner 01 Aug 2025, 16:17
FIBK FIRST INTERSTATE BANCSYSTEM INC 14 Jul 2025 1 -$1,711,050 4 10%+ Owner 15 Jul 2025, 18:10