FIRST INTST BANCSYSTEM INC

Ticker: FIBK CUSIP: 32055Y201 Class: Common Stock

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q4 2025

Shares 82,937 Value ($000) $2,870 Avg Close $32.13 Range $28.33 - $35.91

Q3 2025

Shares 82,925 Value ($000) $2,643 Avg Close $30.08 Range $26.44 - $33.09

Q2 2025

Shares 86,584 Value ($000) $2,495 Avg Close $25.62 Range $21.60 - $28.14

Q1 2025

Shares 85,410 Value ($000) $2,447 Avg Close $28.99 Range $25.84 - $31.59

Q4 2024

Shares 86,900 Value ($000) $2,822 Avg Close $30.02 Range $26.60 - $34.12

Q3 2024

Shares 87,943 Value ($000) $2,698 Avg Close $27.10 Range $24.27 - $29.66

Q2 2024

Shares 90,157 Value ($000) $2,504 Avg Close $23.65 Range $21.35 - $25.36

Q1 2024

Shares 93,301 Value ($000) $2,539 Avg Close $23.93 Range $21.64 - $27.27

Q4 2023

Shares 93,086 Value ($000) $2,862 Avg Close $22.41 Range $17.71 - $28.23

Q3 2023

Shares 96,675 Value ($000) $2,411 Avg Close $22.08 Range $18.85 - $25.23

Q2 2023

Shares 102,279 Value ($000) $2,438 Avg Close $20.93 Range $17.61 - $24.79

Q1 2023

Shares 111,249 Value ($000) $3,322 Avg Close $28.73 Range $23.43 - $32.20

Q4 2022

Shares 114,684 Value ($000) $4,433 Avg Close $34.12 Range $30.24 - $37.52

Q3 2022

Shares 116,182 Value ($000) $4,688 Avg Close $32.17 Range $29.33 - $35.35

Q2 2022

Shares 115,672 Value ($000) $4,408 Avg Close $28.16 Range $25.41 - $31.07

Q1 2022

Shares 112,374 Value ($000) $4,132 Avg Close $30.77 Range $27.94 - $35.17

Q4 2021

Shares 57,626 Value ($000) $2,344 Avg Close $32.08 Range $29.12 - $35.07

Q3 2021

Shares 56,012 Value ($000) $2,255 Avg Close $32.44 Range $28.61 - $35.28

Q2 2021

Shares 56,521 Value ($000) $2,364 Avg Close $34.99 Range $31.09 - $37.17

Q1 2021

Shares 61,094 Value ($000) $2,813 Avg Close $33.45 Range $28.62 - $38.67

Q4 2020

Shares 61,278 Value ($000) $2,498 Avg Close $28.24 Range $23.24 - $30.91

Q3 2020

Shares 63,454 Value ($000) $2,021 Avg Close $22.79 Range $19.82 - $25.19

Q2 2020

Shares 64,082 Value ($000) $1,984 Avg Close $22.21 Range $18.56 - $26.25

Q1 2020

Shares 57,535 Value ($000) $1,659 Avg Close $25.51 Range $17.70 - $29.72

Q4 2019

Shares 57,820 Value ($000) $2,424 Avg Close $29.42 Range $26.97 - $30.65

Q3 2019

Shares 58,988 Value ($000) $2,374 Avg Close $27.39 Range $25.57 - $28.80

Q2 2019

Shares 57,684 Value ($000) $2,285 Avg Close $27.59 Range $25.51 - $29.43

Q1 2019

Shares 50,379 Value ($000) $2,006 Avg Close $27.43 Range $24.54 - $29.25

Q4 2018

Shares 52,014 Value ($000) $1,902 Avg Close $28.30 Range $23.64 - $31.56

Q3 2018

Shares 50,339 Value ($000) $2,255 Avg Close $30.14 Range $28.28 - $31.93

Q2 2018

Shares 50,356 Value ($000) $2,125 Avg Close $28.23 Range $25.92 - $30.31

Q1 2018

Shares 39,184 Value ($000) $1,550 Avg Close $27.27 Range $25.33 - $28.53

Q4 2017

Shares 41,055 Value ($000) $1,644 Avg Close $25.78 Range $23.94 - $27.43

Q3 2017

Shares 41,789 Value ($000) $1,598 Avg Close $23.89 Range $22.02 - $25.34

Q2 2017

Shares 45,492 Value ($000) $1,692 Avg Close $24.61 Range $22.12 - $26.78

Q1 2017

Shares 38,840 Value ($000) $1,540 Avg Close $27.13 Range $24.24 - $29.59

Q4 2016

Shares 40,640 Value ($000) $1,729 Avg Close $23.52 Range $19.91 - $27.96

Q3 2016

Shares 41,740 Value ($000) $1,315 Avg Close $19.18 Range $17.19 - $20.98

Q2 2016

Shares 41,340 Value ($000) $1,162 Avg Close $17.84 Range $16.91 - $18.79

Q1 2016

Shares 41,640 Value ($000) $1,171 Avg Close $17.15 Range $15.67 - $18.33

Q4 2015

Shares 36,436 Value ($000) $1,059 Avg Close $18.14 Range $16.44 - $19.65

Q3 2015

Shares 35,806 Value ($000) $997 Avg Close $17.08 Range $15.94 - $18.02

Q2 2015

Shares 35,906 Value ($000) $996 Avg Close $17.14 Range $16.52 - $17.95

Q1 2015

Shares 33,011 Value ($000) $918 Avg Close $16.04 Range $14.64 - $17.23

Q4 2014

Shares 33,611 Value ($000) $935 Avg Close $16.97 Range $15.81 - $18.14

Q3 2014

Shares 33,468 Value ($000) $889 Avg Close $16.24 Range $15.08 - $17.40

Q2 2014

Shares 37,378 Value ($000) $1,016 Avg Close $15.76 Range $14.59 - $17.36

Q1 2014

Shares 31,778 Value ($000) $897 Avg Close $15.85 Range $14.50 - $17.54

Q4 2013

Shares 31,778 Value ($000) $902 Avg Close $15.43 Range $13.64 - $17.60

Q3 2013

Shares 31,578 Value ($000) $763 Avg Close $13.86 Range $12.12 - $14.95

Q2 2013

Shares 30,563 Value ($000) $634 Avg Close $11.61 Range $10.46 - $12.41

Q1 2013

Shares 28,218 Value ($000) $531 Avg Close $10.22 Range $8.87 - $11.53

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	82,937	$2,870	$32.13	$28.33 - $35.91
Q3 2025	82,925	$2,643	$30.08	$26.44 - $33.09
Q2 2025	86,584	$2,495	$25.62	$21.60 - $28.14
Q1 2025	85,410	$2,447	$28.99	$25.84 - $31.59
Q4 2024	86,900	$2,822	$30.02	$26.60 - $34.12
Q3 2024	87,943	$2,698	$27.10	$24.27 - $29.66
Q2 2024	90,157	$2,504	$23.65	$21.35 - $25.36
Q1 2024	93,301	$2,539	$23.93	$21.64 - $27.27
Q4 2023	93,086	$2,862	$22.41	$17.71 - $28.23
Q3 2023	96,675	$2,411	$22.08	$18.85 - $25.23
Q2 2023	102,279	$2,438	$20.93	$17.61 - $24.79
Q1 2023	111,249	$3,322	$28.73	$23.43 - $32.20
Q4 2022	114,684	$4,433	$34.12	$30.24 - $37.52
Q3 2022	116,182	$4,688	$32.17	$29.33 - $35.35
Q2 2022	115,672	$4,408	$28.16	$25.41 - $31.07
Q1 2022	112,374	$4,132	$30.77	$27.94 - $35.17
Q4 2021	57,626	$2,344	$32.08	$29.12 - $35.07
Q3 2021	56,012	$2,255	$32.44	$28.61 - $35.28
Q2 2021	56,521	$2,364	$34.99	$31.09 - $37.17
Q1 2021	61,094	$2,813	$33.45	$28.62 - $38.67
Q4 2020	61,278	$2,498	$28.24	$23.24 - $30.91
Q3 2020	63,454	$2,021	$22.79	$19.82 - $25.19
Q2 2020	64,082	$1,984	$22.21	$18.56 - $26.25
Q1 2020	57,535	$1,659	$25.51	$17.70 - $29.72
Q4 2019	57,820	$2,424	$29.42	$26.97 - $30.65
Q3 2019	58,988	$2,374	$27.39	$25.57 - $28.80
Q2 2019	57,684	$2,285	$27.59	$25.51 - $29.43
Q1 2019	50,379	$2,006	$27.43	$24.54 - $29.25
Q4 2018	52,014	$1,902	$28.30	$23.64 - $31.56
Q3 2018	50,339	$2,255	$30.14	$28.28 - $31.93
Q2 2018	50,356	$2,125	$28.23	$25.92 - $30.31
Q1 2018	39,184	$1,550	$27.27	$25.33 - $28.53
Q4 2017	41,055	$1,644	$25.78	$23.94 - $27.43
Q3 2017	41,789	$1,598	$23.89	$22.02 - $25.34
Q2 2017	45,492	$1,692	$24.61	$22.12 - $26.78
Q1 2017	38,840	$1,540	$27.13	$24.24 - $29.59
Q4 2016	40,640	$1,729	$23.52	$19.91 - $27.96
Q3 2016	41,740	$1,315	$19.18	$17.19 - $20.98
Q2 2016	41,340	$1,162	$17.84	$16.91 - $18.79
Q1 2016	41,640	$1,171	$17.15	$15.67 - $18.33
Q4 2015	36,436	$1,059	$18.14	$16.44 - $19.65
Q3 2015	35,806	$997	$17.08	$15.94 - $18.02
Q2 2015	35,906	$996	$17.14	$16.52 - $17.95
Q1 2015	33,011	$918	$16.04	$14.64 - $17.23
Q4 2014	33,611	$935	$16.97	$15.81 - $18.14
Q3 2014	33,468	$889	$16.24	$15.08 - $17.40
Q2 2014	37,378	$1,016	$15.76	$14.59 - $17.36
Q1 2014	31,778	$897	$15.85	$14.50 - $17.54
Q4 2013	31,778	$902	$15.43	$13.64 - $17.60
Q3 2013	31,578	$763	$13.86	$12.12 - $14.95
Q2 2013	30,563	$634	$11.61	$10.46 - $12.41
Q1 2013	28,218	$531	$10.22	$8.87 - $11.53