FIRST INTST BANCSYSTEM INC

Ticker: FIBK CUSIP: 32055Y201 Class: Common Stock

FIRST INTERSTATE BANK's Holding History (CIK: 0001125727)

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

Q4 2025

Shares 4,665,282 Value ($000) $161,419 Avg Close $32.13 Range $28.33 - $35.91

Q3 2025

Shares 4,694,218 Value ($000) $149,605 Avg Close $30.08 Range $26.44 - $33.09

Q2 2025

Shares 4,923,991 Value ($000) $141,909 Avg Close $25.62 Range $21.60 - $28.14

Q1 2025

Shares 5,053,342 Value ($000) $144,778 Avg Close $28.99 Range $25.84 - $31.59

Q4 2024

Shares 4,429,074 Value ($000) $143,812 Avg Close $30.02 Range $26.60 - $34.12

Q3 2024

Shares 4,879,281 Value ($000) $149,696 Avg Close $27.10 Range $24.27 - $29.66

Q2 2024

Shares 4,886,916 Value ($000) $135,710 Avg Close $23.65 Range $21.35 - $25.36

Q1 2024

Shares 4,923,465 Value ($000) $133,967 Avg Close $23.93 Range $21.64 - $27.27

Q4 2023

Shares 5,084,514 Value ($000) $156,349 Avg Close $22.41 Range $17.71 - $28.23

Q3 2023

Shares 6,087,260 Value ($000) $151,816 Avg Close $22.08 Range $18.85 - $25.23

Q2 2023

Shares 6,083,598 Value ($000) $145,033 Avg Close $20.93 Range $17.61 - $24.79

Q1 2023

Shares 6,080,083 Value ($000) $181,551 Avg Close $28.73 Range $23.43 - $32.20

Q4 2022

Shares 6,103,223 Value ($000) $236 Avg Close $34.12 Range $30.24 - $37.52

Q3 2022

Shares 6,158,947 Value ($000) $248,514 Avg Close $32.17 Range $29.33 - $35.35

Q2 2022

Shares 7,951,944 Value ($000) $303,049 Avg Close $28.16 Range $25.41 - $31.07

Q1 2022

Shares 151,361 Value ($000) $5,566 Avg Close $30.77 Range $27.94 - $35.17

Q4 2021

Shares 153,963 Value ($000) $6,261 Avg Close $32.08 Range $29.12 - $35.07

Q3 2021

Shares 146,115 Value ($000) $5,882 Avg Close $32.44 Range $28.61 - $35.28

Q2 2021

Shares 139,965 Value ($000) $5,855 Avg Close $34.99 Range $31.09 - $37.17

Q4 2020

Shares 121,875 Value ($000) $4,969 Avg Close $28.24 Range $23.24 - $30.91

Q3 2020

Shares 158,825 Value ($000) $5,059 Avg Close $22.79 Range $19.82 - $25.19

Q2 2020

Shares 221,293 Value ($000) $6,851 Avg Close $22.21 Range $18.56 - $26.25

Q1 2020

Shares 227,953 Value ($000) $6,574 Avg Close $25.51 Range $17.70 - $29.72

Q4 2019

Shares 213,413 Value ($000) $8,946 Avg Close $29.42 Range $26.97 - $30.65

Q3 2019

Shares 236,565 Value ($000) $9,519 Avg Close $27.39 Range $25.57 - $28.80

Q2 2019

Shares 252,663 Value ($000) $10,008 Avg Close $27.59 Range $25.51 - $29.43

Q1 2019

Shares 236,119 Value ($000) $9,402 Avg Close $27.43 Range $24.54 - $29.25

Q4 2018

Shares 174,685 Value ($000) $6,387 Avg Close $28.30 Range $23.64 - $31.56

Q3 2018

Shares 150,393 Value ($000) $6,738 Avg Close $30.14 Range $28.28 - $31.93

Q2 2018

Shares 149,892 Value ($000) $6,325 Avg Close $28.23 Range $25.92 - $30.31

Q1 2018

Shares 101,741 Value ($000) $4,023 Avg Close $27.27 Range $25.33 - $28.53

Q4 2017

Shares 147,695 Value ($000) $5,916 Avg Close $25.78 Range $23.94 - $27.43

Q3 2017

Shares 159,944 Value ($000) $6,118 Avg Close $23.89 Range $22.02 - $25.34

Q2 2017

Shares 125,247 Value ($000) $4,659 Avg Close $24.61 Range $22.12 - $26.78

Q1 2017

Shares 125,746 Value ($000) $4,986 Avg Close $27.13 Range $24.24 - $29.59

Q4 2016

Shares 94,024 Value ($000) $4,001 Avg Close $23.52 Range $19.91 - $27.96

Q3 2016

Shares 98,074 Value ($000) $3,090 Avg Close $19.18 Range $17.19 - $20.98

Q2 2016

Shares 154,798 Value ($000) $4,350 Avg Close $17.84 Range $16.91 - $18.79

Q1 2016

Shares 153,574 Value ($000) $4,320 Avg Close $17.15 Range $15.67 - $18.33

Q4 2015

Shares 154,015 Value ($000) $4,477 Avg Close $18.14 Range $16.44 - $19.65

Q3 2015

Shares 184,211 Value ($000) $5,128 Avg Close $17.08 Range $15.94 - $18.02

Q2 2015

Shares 167,861 Value ($000) $4,656 Avg Close $17.14 Range $16.52 - $17.95

Q1 2015

Shares 170,394 Value ($000) $4,741 Avg Close $16.04 Range $14.64 - $17.23

Q4 2014

Shares 159,715 Value ($000) $4,443 Avg Close $16.97 Range $15.81 - $18.14

Q3 2014

Shares 146,242 Value ($000) $3,886 Avg Close $16.24 Range $15.08 - $17.40

Q2 2014

Shares 143,746 Value ($000) $3,907 Avg Close $15.76 Range $14.59 - $17.36

Q1 2014

Shares 172,675 Value ($000) $4,873 Avg Close $15.85 Range $14.50 - $17.54

Q4 2013

Shares 148,099 Value ($000) $4,202 Avg Close $15.43 Range $13.64 - $17.60

Q3 2013

Shares 139,429 Value ($000) $3,367 Avg Close $13.86 Range $12.12 - $14.95

Q2 2013

Shares 217,443 Value ($000) $4,508 Avg Close $11.61 Range $10.46 - $12.41

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	4,665,282	$161,419	$32.13	$28.33 - $35.91
Q3 2025	4,694,218	$149,605	$30.08	$26.44 - $33.09
Q2 2025	4,923,991	$141,909	$25.62	$21.60 - $28.14
Q1 2025	5,053,342	$144,778	$28.99	$25.84 - $31.59
Q4 2024	4,429,074	$143,812	$30.02	$26.60 - $34.12
Q3 2024	4,879,281	$149,696	$27.10	$24.27 - $29.66
Q2 2024	4,886,916	$135,710	$23.65	$21.35 - $25.36
Q1 2024	4,923,465	$133,967	$23.93	$21.64 - $27.27
Q4 2023	5,084,514	$156,349	$22.41	$17.71 - $28.23
Q3 2023	6,087,260	$151,816	$22.08	$18.85 - $25.23
Q2 2023	6,083,598	$145,033	$20.93	$17.61 - $24.79
Q1 2023	6,080,083	$181,551	$28.73	$23.43 - $32.20
Q4 2022	6,103,223	$236	$34.12	$30.24 - $37.52
Q3 2022	6,158,947	$248,514	$32.17	$29.33 - $35.35
Q2 2022	7,951,944	$303,049	$28.16	$25.41 - $31.07
Q1 2022	151,361	$5,566	$30.77	$27.94 - $35.17
Q4 2021	153,963	$6,261	$32.08	$29.12 - $35.07
Q3 2021	146,115	$5,882	$32.44	$28.61 - $35.28
Q2 2021	139,965	$5,855	$34.99	$31.09 - $37.17
Q4 2020	121,875	$4,969	$28.24	$23.24 - $30.91
Q3 2020	158,825	$5,059	$22.79	$19.82 - $25.19
Q2 2020	221,293	$6,851	$22.21	$18.56 - $26.25
Q1 2020	227,953	$6,574	$25.51	$17.70 - $29.72
Q4 2019	213,413	$8,946	$29.42	$26.97 - $30.65
Q3 2019	236,565	$9,519	$27.39	$25.57 - $28.80
Q2 2019	252,663	$10,008	$27.59	$25.51 - $29.43
Q1 2019	236,119	$9,402	$27.43	$24.54 - $29.25
Q4 2018	174,685	$6,387	$28.30	$23.64 - $31.56
Q3 2018	150,393	$6,738	$30.14	$28.28 - $31.93
Q2 2018	149,892	$6,325	$28.23	$25.92 - $30.31
Q1 2018	101,741	$4,023	$27.27	$25.33 - $28.53
Q4 2017	147,695	$5,916	$25.78	$23.94 - $27.43
Q3 2017	159,944	$6,118	$23.89	$22.02 - $25.34
Q2 2017	125,247	$4,659	$24.61	$22.12 - $26.78
Q1 2017	125,746	$4,986	$27.13	$24.24 - $29.59
Q4 2016	94,024	$4,001	$23.52	$19.91 - $27.96
Q3 2016	98,074	$3,090	$19.18	$17.19 - $20.98
Q2 2016	154,798	$4,350	$17.84	$16.91 - $18.79
Q1 2016	153,574	$4,320	$17.15	$15.67 - $18.33
Q4 2015	154,015	$4,477	$18.14	$16.44 - $19.65
Q3 2015	184,211	$5,128	$17.08	$15.94 - $18.02
Q2 2015	167,861	$4,656	$17.14	$16.52 - $17.95
Q1 2015	170,394	$4,741	$16.04	$14.64 - $17.23
Q4 2014	159,715	$4,443	$16.97	$15.81 - $18.14
Q3 2014	146,242	$3,886	$16.24	$15.08 - $17.40
Q2 2014	143,746	$3,907	$15.76	$14.59 - $17.36
Q1 2014	172,675	$4,873	$15.85	$14.50 - $17.54
Q4 2013	148,099	$4,202	$15.43	$13.64 - $17.60
Q3 2013	139,429	$3,367	$13.86	$12.12 - $14.95
Q2 2013	217,443	$4,508	$11.61	$10.46 - $12.41