BLACK HILLS CORP

Ticker: BKH CUSIP: 092113109 Class: COM

NEW YORK STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0000314969)

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

Q4 2025

Shares 73,390 Value ($000) $5 Avg Close $66.47 Range $58.20 - $73.32

Q3 2025

Shares 73,390 Value ($000) $5 Avg Close $57.38 Range $54.13 - $60.96

Q2 2025

Shares 73,390 Value ($000) $4 Avg Close $56.47 Range $52.67 - $59.65

Q1 2025

Shares 73,390 Value ($000) $4 Avg Close $56.47 Range $52.15 - $59.45

Q4 2024

Shares 87,390 Value ($000) $5 Avg Close $57.33 Range $53.67 - $62.19

Q3 2024

Shares 95,390 Value ($000) $6 Avg Close $54.39 Range $49.37 - $58.14

Q2 2024

Shares 95,590 Value ($000) $5 Avg Close $50.26 Range $46.53 - $53.93

Q1 2024

Shares 95,590 Value ($000) $5 Avg Close $47.73 Range $44.68 - $50.77

Q4 2023

Shares 95,690 Value ($000) $5 Avg Close $46.16 Range $41.54 - $51.76

Q3 2023

Shares 95,690 Value ($000) $5 Avg Close $50.50 Range $44.92 - $54.81

Q2 2023

Shares 95,690 Value ($000) $6 Avg Close $55.83 Range $52.26 - $58.57

Q1 2023

Shares 95,690 Value ($000) $6 Avg Close $57.47 Range $51.53 - $64.19

Q4 2022

Shares 98,759 Value ($000) $7 Avg Close $58.05 Range $50.78 - $62.96

Q3 2022

Shares 100,657 Value ($000) $6,817 Avg Close $64.21 Range $58.14 - $68.58

Q2 2022

Shares 101,463 Value ($000) $7,383 Avg Close $63.81 Range $56.66 - $68.52

Q1 2022

Shares 101,563 Value ($000) $7,822 Avg Close $58.63 Range $54.02 - $65.73

Q4 2021

Shares 101,663 Value ($000) $7,174 Avg Close $55.40 Range $51.95 - $59.51

Q3 2021

Shares 94,482 Value ($000) $5,930 Avg Close $56.46 Range $51.50 - $60.51

Q2 2021

Shares 91,561 Value ($000) $6,009 Avg Close $55.86 Range $53.24 - $58.36

Q1 2021

Shares 91,670 Value ($000) $6,121 Avg Close $50.63 Range $47.19 - $55.19

Q4 2020

Shares 95,494 Value ($000) $5,868 Avg Close $48.27 Range $42.45 - $52.98

Q3 2020

Shares 98,894 Value ($000) $5,290 Avg Close $45.64 Range $41.75 - $49.89

Q2 2020

Shares 92,994 Value ($000) $5,269 Avg Close $47.91 Range $41.68 - $55.82

Q1 2020

Shares 92,994 Value ($000) $5,954 Avg Close $59.44 Range $37.90 - $68.25

Q4 2019

Shares 90,394 Value ($000) $7,100 Avg Close $60.15 Range $57.52 - $62.11

Q3 2019

Shares 95,594 Value ($000) $7,335 Avg Close $60.34 Range $54.21 - $62.80

Q2 2019

Shares 95,594 Value ($000) $7,473 Avg Close $58.01 Range $54.08 - $63.38

Q1 2019

Shares 95,594 Value ($000) $7,081 Avg Close $52.65 Range $46.35 - $57.40

Q4 2018

Shares 90,694 Value ($000) $5,694 Avg Close $47.68 Range $43.15 - $52.00

Q3 2018

Shares 90,836 Value ($000) $5,277 Avg Close $45.23 Range $42.66 - $48.12

Q2 2018

Shares 90,840 Value ($000) $5,560 Avg Close $42.43 Range $39.15 - $46.25

Q1 2018

Shares 90,840 Value ($000) $4,933 Avg Close $39.62 Range $37.38 - $44.38

Q4 2017

Shares 85,640 Value ($000) $5,148 Avg Close $45.46 Range $41.87 - $51.03

Q3 2017

Shares 85,640 Value ($000) $5,898 Avg Close $50.60 Range $48.73 - $51.89

Q2 2017

Shares 77,940 Value ($000) $5,259 Avg Close $49.84 Range $47.18 - $52.32

Q1 2017

Shares 70,240 Value ($000) $4,669 Avg Close $45.51 Range $43.01 - $48.38

Q4 2016

Shares 70,240 Value ($000) $4,309 Avg Close $42.62 Range $38.96 - $45.02

Q3 2016

Shares 70,240 Value ($000) $4,300 Avg Close $43.19 Range $40.45 - $45.62

Q2 2016

Shares 70,240 Value ($000) $4,428 Avg Close $42.44 Range $39.39 - $44.88

Q1 2016

Shares 64,640 Value ($000) $3,887 Avg Close $37.32 Range $31.07 - $42.88

Q4 2015

Shares 63,940 Value ($000) $2,969 Avg Close $30.44 Range $27.84 - $33.06

Q3 2015

Shares 66,044 Value ($000) $2,730 Avg Close $28.18 Range $25.38 - $32.28

Q2 2015

Shares 66,044 Value ($000) $2,883 Avg Close $32.61 Range $29.70 - $35.86

Q1 2015

Shares 66,744 Value ($000) $3,367 Avg Close $34.02 Range $32.42 - $35.85

Q4 2014

Shares 67,344 Value ($000) $3,572 Avg Close $35.24 Range $31.42 - $38.13

Q3 2014

Shares 72,644 Value ($000) $3,478 Avg Close $35.67 Range $31.93 - $41.13

Q2 2014

Shares 73,344 Value ($000) $4,503 Avg Close $38.31 Range $36.56 - $40.65

Q1 2014

Shares 73,844 Value ($000) $4,257 Avg Close $36.15 Range $33.35 - $38.82

Q4 2013

Shares 74,144 Value ($000) $3,893 Avg Close $33.02 Range $30.45 - $35.53

Q3 2013

Shares 74,044 Value ($000) $3,692 Avg Close $32.70 Range $30.21 - $35.44

Q2 2013

Shares 70,944 Value ($000) $3,459 Avg Close $30.15 Range $27.57 - $32.51

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	73,390	$5	$66.47	$58.20 - $73.32
Q3 2025	73,390	$5	$57.38	$54.13 - $60.96
Q2 2025	73,390	$4	$56.47	$52.67 - $59.65
Q1 2025	73,390	$4	$56.47	$52.15 - $59.45
Q4 2024	87,390	$5	$57.33	$53.67 - $62.19
Q3 2024	95,390	$6	$54.39	$49.37 - $58.14
Q2 2024	95,590	$5	$50.26	$46.53 - $53.93
Q1 2024	95,590	$5	$47.73	$44.68 - $50.77
Q4 2023	95,690	$5	$46.16	$41.54 - $51.76
Q3 2023	95,690	$5	$50.50	$44.92 - $54.81
Q2 2023	95,690	$6	$55.83	$52.26 - $58.57
Q1 2023	95,690	$6	$57.47	$51.53 - $64.19
Q4 2022	98,759	$7	$58.05	$50.78 - $62.96
Q3 2022	100,657	$6,817	$64.21	$58.14 - $68.58
Q2 2022	101,463	$7,383	$63.81	$56.66 - $68.52
Q1 2022	101,563	$7,822	$58.63	$54.02 - $65.73
Q4 2021	101,663	$7,174	$55.40	$51.95 - $59.51
Q3 2021	94,482	$5,930	$56.46	$51.50 - $60.51
Q2 2021	91,561	$6,009	$55.86	$53.24 - $58.36
Q1 2021	91,670	$6,121	$50.63	$47.19 - $55.19
Q4 2020	95,494	$5,868	$48.27	$42.45 - $52.98
Q3 2020	98,894	$5,290	$45.64	$41.75 - $49.89
Q2 2020	92,994	$5,269	$47.91	$41.68 - $55.82
Q1 2020	92,994	$5,954	$59.44	$37.90 - $68.25
Q4 2019	90,394	$7,100	$60.15	$57.52 - $62.11
Q3 2019	95,594	$7,335	$60.34	$54.21 - $62.80
Q2 2019	95,594	$7,473	$58.01	$54.08 - $63.38
Q1 2019	95,594	$7,081	$52.65	$46.35 - $57.40
Q4 2018	90,694	$5,694	$47.68	$43.15 - $52.00
Q3 2018	90,836	$5,277	$45.23	$42.66 - $48.12
Q2 2018	90,840	$5,560	$42.43	$39.15 - $46.25
Q1 2018	90,840	$4,933	$39.62	$37.38 - $44.38
Q4 2017	85,640	$5,148	$45.46	$41.87 - $51.03
Q3 2017	85,640	$5,898	$50.60	$48.73 - $51.89
Q2 2017	77,940	$5,259	$49.84	$47.18 - $52.32
Q1 2017	70,240	$4,669	$45.51	$43.01 - $48.38
Q4 2016	70,240	$4,309	$42.62	$38.96 - $45.02
Q3 2016	70,240	$4,300	$43.19	$40.45 - $45.62
Q2 2016	70,240	$4,428	$42.44	$39.39 - $44.88
Q1 2016	64,640	$3,887	$37.32	$31.07 - $42.88
Q4 2015	63,940	$2,969	$30.44	$27.84 - $33.06
Q3 2015	66,044	$2,730	$28.18	$25.38 - $32.28
Q2 2015	66,044	$2,883	$32.61	$29.70 - $35.86
Q1 2015	66,744	$3,367	$34.02	$32.42 - $35.85
Q4 2014	67,344	$3,572	$35.24	$31.42 - $38.13
Q3 2014	72,644	$3,478	$35.67	$31.93 - $41.13
Q2 2014	73,344	$4,503	$38.31	$36.56 - $40.65
Q1 2014	73,844	$4,257	$36.15	$33.35 - $38.82
Q4 2013	74,144	$3,893	$33.02	$30.45 - $35.53
Q3 2013	74,044	$3,692	$32.70	$30.21 - $35.44
Q2 2013	70,944	$3,459	$30.15	$27.57 - $32.51