BLACK HILLS CORP

Ticker: BKH CUSIP: 092113109 Class: COM

NISA INVESTMENT ADVISORS, LLC's Holding History (CIK: 0000937615)

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

Q4 2025

Shares 49,687 Value ($000) $3,449 Avg Close $66.47 Range $58.20 - $73.32

Q3 2025

Shares 47,424 Value ($000) $2,921 Avg Close $57.38 Range $54.13 - $60.96

Q2 2025

Shares 53,797 Value ($000) $3,018 Avg Close $56.47 Range $52.67 - $59.65

Q1 2025

Shares 48,010 Value ($000) $2,912 Avg Close $56.47 Range $52.15 - $59.45

Q4 2024

Shares 49,061 Value ($000) $2,871 Avg Close $57.33 Range $53.67 - $62.19

Q3 2024

Shares 48,923 Value ($000) $2,990 Avg Close $54.39 Range $49.37 - $58.14

Q2 2024

Shares 50,636 Value ($000) $2,754 Avg Close $50.26 Range $46.53 - $53.93

Q1 2024

Shares 48,676 Value ($000) $2,658 Avg Close $47.73 Range $44.68 - $50.77

Q4 2023

Shares 48,102 Value ($000) $2,595 Avg Close $46.16 Range $41.54 - $51.76

Q3 2023

Shares 51,820 Value ($000) $2,622 Avg Close $50.50 Range $44.92 - $54.81

Q2 2023

Shares 53,734 Value ($000) $3,238 Avg Close $55.83 Range $52.26 - $58.57

Q1 2023

Shares 51,624 Value ($000) $3 Avg Close $57.47 Range $51.53 - $64.19

Q4 2022

Shares 48,714 Value ($000) $3 Avg Close $58.05 Range $50.78 - $62.96

Q3 2022

Shares 51,314 Value ($000) $3,465 Avg Close $64.21 Range $58.14 - $68.58

Q2 2022

Shares 50,340 Value ($000) $3,663 Avg Close $63.81 Range $56.66 - $68.52

Q1 2022

Shares 50,170 Value ($000) $3,864 Avg Close $58.63 Range $54.02 - $65.73

Q3 2021

Shares 45,800 Value ($000) $2,874 Avg Close $56.46 Range $51.50 - $60.51

Q2 2021

Shares 47,000 Value ($000) $3,085 Avg Close $55.86 Range $53.24 - $58.36

Q1 2021

Shares 47,000 Value ($000) $3,138 Avg Close $50.63 Range $47.19 - $55.19

Q4 2020

Shares 45,800 Value ($000) $2,814 Avg Close $48.27 Range $42.45 - $52.98

Q3 2020

Shares 45,600 Value ($000) $2,439 Avg Close $45.64 Range $41.75 - $49.89

Q2 2020

Shares 44,250 Value ($000) $2,507 Avg Close $47.91 Range $41.68 - $55.82

Q1 2020

Shares 55,720 Value ($000) $3,568 Avg Close $59.44 Range $37.90 - $68.25

Q4 2019

Shares 52,020 Value ($000) $4,086 Avg Close $60.15 Range $57.52 - $62.11

Q3 2019

Shares 51,900 Value ($000) $3,982 Avg Close $60.34 Range $54.21 - $62.80

Q2 2019

Shares 51,850 Value ($000) $4,053 Avg Close $58.01 Range $54.08 - $63.38

Q1 2019

Shares 51,850 Value ($000) $3,841 Avg Close $52.65 Range $46.35 - $57.40

Q4 2018

Shares 51,850 Value ($000) $3,255 Avg Close $47.68 Range $43.15 - $52.00

Q3 2018

Shares 54,600 Value ($000) $3,172 Avg Close $45.23 Range $42.66 - $48.12

Q2 2018

Shares 58,300 Value ($000) $3,569 Avg Close $42.43 Range $39.15 - $46.25

Q1 2018

Shares 63,800 Value ($000) $3,389 Avg Close $39.62 Range $37.38 - $44.38

Q4 2017

Shares 67,670 Value ($000) $4,068 Avg Close $45.46 Range $41.87 - $51.03

Q3 2017

Shares 71,870 Value ($000) $4,950 Avg Close $50.60 Range $48.73 - $51.89

Q2 2017

Shares 80,270 Value ($000) $5,437 Avg Close $49.84 Range $47.18 - $52.32

Q1 2017

Shares 80,670 Value ($000) $5,362 Avg Close $45.51 Range $43.01 - $48.38

Q4 2016

Shares 80,900 Value ($000) $4,962 Avg Close $42.62 Range $38.96 - $45.02

Q3 2016

Shares 86,600 Value ($000) $5,302 Avg Close $43.19 Range $40.45 - $45.62

Q2 2016

Shares 73,800 Value ($000) $4,652 Avg Close $42.44 Range $39.39 - $44.88

Q1 2016

Shares 70,500 Value ($000) $4,239 Avg Close $37.32 Range $31.07 - $42.88

Q4 2015

Shares 58,500 Value ($000) $2,716 Avg Close $30.44 Range $27.84 - $33.06

Q3 2015

Shares 58,500 Value ($000) $2,418 Avg Close $28.18 Range $25.38 - $32.28

Q2 2015

Shares 51,140 Value ($000) $2,232 Avg Close $32.61 Range $29.70 - $35.86

Q1 2015

Shares 63,740 Value ($000) $3,215 Avg Close $34.02 Range $32.42 - $35.85

Q4 2014

Shares 64,340 Value ($000) $3,413 Avg Close $35.24 Range $31.42 - $38.13

Q3 2014

Shares 63,240 Value ($000) $3,028 Avg Close $35.67 Range $31.93 - $41.13

Q2 2014

Shares 63,140 Value ($000) $3,876 Avg Close $38.31 Range $36.56 - $40.65

Q1 2014

Shares 59,040 Value ($000) $3,404 Avg Close $36.15 Range $33.35 - $38.82

Q4 2013

Shares 52,940 Value ($000) $2,780 Avg Close $33.02 Range $30.45 - $35.53

Q3 2013

Shares 52,940 Value ($000) $2,640 Avg Close $32.70 Range $30.21 - $35.44

Q2 2013

Shares 52,940 Value ($000) $2,581 Avg Close $30.15 Range $27.57 - $32.51

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	49,687	$3,449	$66.47	$58.20 - $73.32
Q3 2025	47,424	$2,921	$57.38	$54.13 - $60.96
Q2 2025	53,797	$3,018	$56.47	$52.67 - $59.65
Q1 2025	48,010	$2,912	$56.47	$52.15 - $59.45
Q4 2024	49,061	$2,871	$57.33	$53.67 - $62.19
Q3 2024	48,923	$2,990	$54.39	$49.37 - $58.14
Q2 2024	50,636	$2,754	$50.26	$46.53 - $53.93
Q1 2024	48,676	$2,658	$47.73	$44.68 - $50.77
Q4 2023	48,102	$2,595	$46.16	$41.54 - $51.76
Q3 2023	51,820	$2,622	$50.50	$44.92 - $54.81
Q2 2023	53,734	$3,238	$55.83	$52.26 - $58.57
Q1 2023	51,624	$3	$57.47	$51.53 - $64.19
Q4 2022	48,714	$3	$58.05	$50.78 - $62.96
Q3 2022	51,314	$3,465	$64.21	$58.14 - $68.58
Q2 2022	50,340	$3,663	$63.81	$56.66 - $68.52
Q1 2022	50,170	$3,864	$58.63	$54.02 - $65.73
Q3 2021	45,800	$2,874	$56.46	$51.50 - $60.51
Q2 2021	47,000	$3,085	$55.86	$53.24 - $58.36
Q1 2021	47,000	$3,138	$50.63	$47.19 - $55.19
Q4 2020	45,800	$2,814	$48.27	$42.45 - $52.98
Q3 2020	45,600	$2,439	$45.64	$41.75 - $49.89
Q2 2020	44,250	$2,507	$47.91	$41.68 - $55.82
Q1 2020	55,720	$3,568	$59.44	$37.90 - $68.25
Q4 2019	52,020	$4,086	$60.15	$57.52 - $62.11
Q3 2019	51,900	$3,982	$60.34	$54.21 - $62.80
Q2 2019	51,850	$4,053	$58.01	$54.08 - $63.38
Q1 2019	51,850	$3,841	$52.65	$46.35 - $57.40
Q4 2018	51,850	$3,255	$47.68	$43.15 - $52.00
Q3 2018	54,600	$3,172	$45.23	$42.66 - $48.12
Q2 2018	58,300	$3,569	$42.43	$39.15 - $46.25
Q1 2018	63,800	$3,389	$39.62	$37.38 - $44.38
Q4 2017	67,670	$4,068	$45.46	$41.87 - $51.03
Q3 2017	71,870	$4,950	$50.60	$48.73 - $51.89
Q2 2017	80,270	$5,437	$49.84	$47.18 - $52.32
Q1 2017	80,670	$5,362	$45.51	$43.01 - $48.38
Q4 2016	80,900	$4,962	$42.62	$38.96 - $45.02
Q3 2016	86,600	$5,302	$43.19	$40.45 - $45.62
Q2 2016	73,800	$4,652	$42.44	$39.39 - $44.88
Q1 2016	70,500	$4,239	$37.32	$31.07 - $42.88
Q4 2015	58,500	$2,716	$30.44	$27.84 - $33.06
Q3 2015	58,500	$2,418	$28.18	$25.38 - $32.28
Q2 2015	51,140	$2,232	$32.61	$29.70 - $35.86
Q1 2015	63,740	$3,215	$34.02	$32.42 - $35.85
Q4 2014	64,340	$3,413	$35.24	$31.42 - $38.13
Q3 2014	63,240	$3,028	$35.67	$31.93 - $41.13
Q2 2014	63,140	$3,876	$38.31	$36.56 - $40.65
Q1 2014	59,040	$3,404	$36.15	$33.35 - $38.82
Q4 2013	52,940	$2,780	$33.02	$30.45 - $35.53
Q3 2013	52,940	$2,640	$32.70	$30.21 - $35.44
Q2 2013	52,940	$2,581	$30.15	$27.57 - $32.51