BLACK HILLS CORP

Ticker: BKH CUSIP: 092113109 Class: COM

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

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

Q4 2025

Shares 69,066 Value ($000) $4,795 Avg Close $66.47 Range $58.20 - $73.32

Q3 2025

Shares 70,553 Value ($000) $4,345 Avg Close $57.38 Range $54.13 - $60.96

Q2 2025

Shares 70,549 Value ($000) $3,958 Avg Close $56.47 Range $52.67 - $59.65

Q1 2025

Shares 70,404 Value ($000) $4,270 Avg Close $56.47 Range $52.15 - $59.45

Q4 2024

Shares 65,264 Value ($000) $3,819 Avg Close $57.33 Range $53.67 - $62.19

Q3 2024

Shares 65,176 Value ($000) $3,984 Avg Close $54.39 Range $49.37 - $58.14

Q2 2024

Shares 66,642 Value ($000) $3,624 Avg Close $50.26 Range $46.53 - $53.93

Q1 2024

Shares 68,034 Value ($000) $3,715 Avg Close $47.73 Range $44.68 - $50.77

Q4 2023

Shares 71,411 Value ($000) $3,853 Avg Close $46.16 Range $41.54 - $51.76

Q3 2023

Shares 74,383 Value ($000) $3,763 Avg Close $50.50 Range $44.92 - $54.81

Q2 2023

Shares 80,940 Value ($000) $4,877 Avg Close $55.83 Range $52.26 - $58.57

Q1 2023

Shares 81,778 Value ($000) $5,160 Avg Close $57.47 Range $51.53 - $64.19

Q4 2022

Shares 82,994 Value ($000) $5,838 Avg Close $58.05 Range $50.78 - $62.96

Q3 2022

Shares 81,859 Value ($000) $5,544 Avg Close $64.21 Range $58.14 - $68.58

Q2 2022

Shares 83,311 Value ($000) $6,063 Avg Close $63.81 Range $56.66 - $68.52

Q1 2022

Shares 82,092 Value ($000) $6,323 Avg Close $58.63 Range $54.02 - $65.73

Q4 2021

Shares 88,591 Value ($000) $6,252 Avg Close $55.40 Range $51.95 - $59.51

Q3 2021

Shares 85,561 Value ($000) $5,370 Avg Close $56.46 Range $51.50 - $60.51

Q2 2021

Shares 86,919 Value ($000) $5,704 Avg Close $55.86 Range $53.24 - $58.36

Q1 2021

Shares 94,862 Value ($000) $6,334 Avg Close $50.63 Range $47.19 - $55.19

Q4 2020

Shares 95,229 Value ($000) $5,852 Avg Close $48.27 Range $42.45 - $52.98

Q3 2020

Shares 95,213 Value ($000) $5,093 Avg Close $45.64 Range $41.75 - $49.89

Q2 2020

Shares 94,851 Value ($000) $5,374 Avg Close $47.91 Range $41.68 - $55.82

Q1 2020

Shares 92,839 Value ($000) $5,944 Avg Close $59.44 Range $37.90 - $68.25

Q4 2019

Shares 93,299 Value ($000) $7,328 Avg Close $60.15 Range $57.52 - $62.11

Q3 2019

Shares 95,184 Value ($000) $7,303 Avg Close $60.34 Range $54.21 - $62.80

Q2 2019

Shares 92,975 Value ($000) $7,268 Avg Close $58.01 Range $54.08 - $63.38

Q1 2019

Shares 82,057 Value ($000) $6,078 Avg Close $52.65 Range $46.35 - $57.40

Q4 2018

Shares 84,356 Value ($000) $5,296 Avg Close $47.68 Range $43.15 - $52.00

Q3 2018

Shares 81,990 Value ($000) $4,763 Avg Close $45.23 Range $42.66 - $48.12

Q2 2018

Shares 82,008 Value ($000) $5,020 Avg Close $42.43 Range $39.15 - $46.25

Q1 2018

Shares 81,508 Value ($000) $4,426 Avg Close $39.62 Range $37.38 - $44.38

Q4 2017

Shares 84,366 Value ($000) $5,071 Avg Close $45.46 Range $41.87 - $51.03

Q3 2017

Shares 85,634 Value ($000) $5,898 Avg Close $50.60 Range $48.73 - $51.89

Q2 2017

Shares 94,789 Value ($000) $6,395 Avg Close $49.84 Range $47.18 - $52.32

Q1 2017

Shares 101,693 Value ($000) $6,760 Avg Close $45.51 Range $43.01 - $48.38

Q4 2016

Shares 106,493 Value ($000) $6,532 Avg Close $42.62 Range $38.96 - $45.02

Q3 2016

Shares 109,393 Value ($000) $6,697 Avg Close $43.19 Range $40.45 - $45.62

Q2 2016

Shares 108,493 Value ($000) $6,839 Avg Close $42.44 Range $39.39 - $44.88

Q1 2016

Shares 108,702 Value ($000) $6,536 Avg Close $37.32 Range $31.07 - $42.88

Q4 2015

Shares 94,856 Value ($000) $4,404 Avg Close $30.44 Range $27.84 - $33.06

Q3 2015

Shares 81,762 Value ($000) $3,380 Avg Close $28.18 Range $25.38 - $32.28

Q2 2015

Shares 81,862 Value ($000) $3,573 Avg Close $32.61 Range $29.70 - $35.86

Q1 2015

Shares 81,684 Value ($000) $4,120 Avg Close $34.02 Range $32.42 - $35.85

Q4 2014

Shares 82,984 Value ($000) $4,401 Avg Close $35.24 Range $31.42 - $38.13

Q3 2014

Shares 82,432 Value ($000) $3,947 Avg Close $35.67 Range $31.93 - $41.13

Q2 2014

Shares 81,464 Value ($000) $5,001 Avg Close $38.31 Range $36.56 - $40.65

Q1 2014

Shares 80,864 Value ($000) $4,662 Avg Close $36.15 Range $33.35 - $38.82

Q4 2013

Shares 80,464 Value ($000) $4,225 Avg Close $33.02 Range $30.45 - $35.53

Q3 2013

Shares 79,964 Value ($000) $3,987 Avg Close $32.70 Range $30.21 - $35.44

Q2 2013

Shares 77,445 Value ($000) $3,775 Avg Close $30.15 Range $27.57 - $32.51

Q1 2013

Shares 76,642 Value ($000) $3,375 Avg Close $26.01 Range $23.33 - $28.29

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	69,066	$4,795	$66.47	$58.20 - $73.32
Q3 2025	70,553	$4,345	$57.38	$54.13 - $60.96
Q2 2025	70,549	$3,958	$56.47	$52.67 - $59.65
Q1 2025	70,404	$4,270	$56.47	$52.15 - $59.45
Q4 2024	65,264	$3,819	$57.33	$53.67 - $62.19
Q3 2024	65,176	$3,984	$54.39	$49.37 - $58.14
Q2 2024	66,642	$3,624	$50.26	$46.53 - $53.93
Q1 2024	68,034	$3,715	$47.73	$44.68 - $50.77
Q4 2023	71,411	$3,853	$46.16	$41.54 - $51.76
Q3 2023	74,383	$3,763	$50.50	$44.92 - $54.81
Q2 2023	80,940	$4,877	$55.83	$52.26 - $58.57
Q1 2023	81,778	$5,160	$57.47	$51.53 - $64.19
Q4 2022	82,994	$5,838	$58.05	$50.78 - $62.96
Q3 2022	81,859	$5,544	$64.21	$58.14 - $68.58
Q2 2022	83,311	$6,063	$63.81	$56.66 - $68.52
Q1 2022	82,092	$6,323	$58.63	$54.02 - $65.73
Q4 2021	88,591	$6,252	$55.40	$51.95 - $59.51
Q3 2021	85,561	$5,370	$56.46	$51.50 - $60.51
Q2 2021	86,919	$5,704	$55.86	$53.24 - $58.36
Q1 2021	94,862	$6,334	$50.63	$47.19 - $55.19
Q4 2020	95,229	$5,852	$48.27	$42.45 - $52.98
Q3 2020	95,213	$5,093	$45.64	$41.75 - $49.89
Q2 2020	94,851	$5,374	$47.91	$41.68 - $55.82
Q1 2020	92,839	$5,944	$59.44	$37.90 - $68.25
Q4 2019	93,299	$7,328	$60.15	$57.52 - $62.11
Q3 2019	95,184	$7,303	$60.34	$54.21 - $62.80
Q2 2019	92,975	$7,268	$58.01	$54.08 - $63.38
Q1 2019	82,057	$6,078	$52.65	$46.35 - $57.40
Q4 2018	84,356	$5,296	$47.68	$43.15 - $52.00
Q3 2018	81,990	$4,763	$45.23	$42.66 - $48.12
Q2 2018	82,008	$5,020	$42.43	$39.15 - $46.25
Q1 2018	81,508	$4,426	$39.62	$37.38 - $44.38
Q4 2017	84,366	$5,071	$45.46	$41.87 - $51.03
Q3 2017	85,634	$5,898	$50.60	$48.73 - $51.89
Q2 2017	94,789	$6,395	$49.84	$47.18 - $52.32
Q1 2017	101,693	$6,760	$45.51	$43.01 - $48.38
Q4 2016	106,493	$6,532	$42.62	$38.96 - $45.02
Q3 2016	109,393	$6,697	$43.19	$40.45 - $45.62
Q2 2016	108,493	$6,839	$42.44	$39.39 - $44.88
Q1 2016	108,702	$6,536	$37.32	$31.07 - $42.88
Q4 2015	94,856	$4,404	$30.44	$27.84 - $33.06
Q3 2015	81,762	$3,380	$28.18	$25.38 - $32.28
Q2 2015	81,862	$3,573	$32.61	$29.70 - $35.86
Q1 2015	81,684	$4,120	$34.02	$32.42 - $35.85
Q4 2014	82,984	$4,401	$35.24	$31.42 - $38.13
Q3 2014	82,432	$3,947	$35.67	$31.93 - $41.13
Q2 2014	81,464	$5,001	$38.31	$36.56 - $40.65
Q1 2014	80,864	$4,662	$36.15	$33.35 - $38.82
Q4 2013	80,464	$4,225	$33.02	$30.45 - $35.53
Q3 2013	79,964	$3,987	$32.70	$30.21 - $35.44
Q2 2013	77,445	$3,775	$30.15	$27.57 - $32.51
Q1 2013	76,642	$3,375	$26.01	$23.33 - $28.29