FIRST INTST BANCSYSTEM INC

Ticker: FIBK CUSIP: 32055Y201 Class: Common Stock

Vanguard Personalized Indexing Management, LLC's Holding History (CIK: 0001767306)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 11,043 Value ($000) $382 Avg Close $32.13 Range $28.33 - $35.91

Q3 2025

Shares 12,006 Value ($000) $383 Avg Close $30.08 Range $26.44 - $33.09

Q2 2025

Shares 10,689 Value ($000) $308 Avg Close $25.62 Range $21.60 - $28.14

Q1 2025

Shares 10,873 Value ($000) $312 Avg Close $28.99 Range $25.84 - $31.59

Q4 2024

Shares 9,646 Value ($000) $313 Avg Close $30.02 Range $26.60 - $34.12

Q3 2024

Shares 8,657 Value ($000) $266 Avg Close $27.10 Range $24.27 - $29.66

Q2 2024

Shares 7,621 Value ($000) $208 Avg Close $23.65 Range $21.35 - $25.36

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	11,043	$382	$32.13	$28.33 - $35.91
Q3 2025	12,006	$383	$30.08	$26.44 - $33.09
Q2 2025	10,689	$308	$25.62	$21.60 - $28.14
Q1 2025	10,873	$312	$28.99	$25.84 - $31.59
Q4 2024	9,646	$313	$30.02	$26.60 - $34.12
Q3 2024	8,657	$266	$27.10	$24.27 - $29.66
Q2 2024	7,621	$208	$23.65	$21.35 - $25.36