BLACK HILLS CORP

Ticker: BKH CUSIP: 092113109 Class: COM

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

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

Q4 2025

Shares 309,141 Value ($000) $21,461 Avg Close $66.47 Range $58.20 - $73.32

Q3 2025

Shares 138,460 Value ($000) $8,528 Avg Close $57.38 Range $54.13 - $60.96

Q2 2025

Shares 145,178 Value ($000) $8,144 Avg Close $56.47 Range $52.67 - $59.65

Q1 2025

Shares 134,579 Value ($000) $8,162 Avg Close $56.47 Range $52.15 - $59.45

Q4 2024

Shares 135,066 Value ($000) $7,904 Avg Close $57.33 Range $53.67 - $62.19

Q3 2024

Shares 135,486 Value ($000) $8,281 Avg Close $54.39 Range $49.37 - $58.14

Q2 2024

Shares 137,166 Value ($000) $7,459 Avg Close $50.26 Range $46.53 - $53.93

Q1 2024

Shares 134,289 Value ($000) $7,332 Avg Close $47.73 Range $44.68 - $50.77

Q4 2023

Shares 138,011 Value ($000) $7,446 Avg Close $46.16 Range $41.54 - $51.76

Q3 2023

Shares 142,940 Value ($000) $7,231 Avg Close $50.50 Range $44.92 - $54.81

Q2 2023

Shares 145,513 Value ($000) $8,769 Avg Close $55.83 Range $52.26 - $58.57

Q1 2023

Shares 145,161 Value ($000) $9,160 Avg Close $57.47 Range $51.53 - $64.19

Q4 2022

Shares 146,630 Value ($000) $10,314 Avg Close $58.05 Range $50.78 - $62.96

Q3 2022

Shares 146,237 Value ($000) $9,905 Avg Close $64.21 Range $58.14 - $68.58

Q2 2022

Shares 147,027 Value ($000) $10,699 Avg Close $63.81 Range $56.66 - $68.52

Q1 2022

Shares 151,747 Value ($000) $11,688 Avg Close $58.63 Range $54.02 - $65.73

Q4 2021

Shares 152,036 Value ($000) $10,729 Avg Close $55.40 Range $51.95 - $59.51

Q3 2021

Shares 151,346 Value ($000) $9,498 Avg Close $56.46 Range $51.50 - $60.51

Q2 2021

Shares 152,742 Value ($000) $10,024 Avg Close $55.86 Range $53.24 - $58.36

Q1 2021

Shares 159,052 Value ($000) $10,620 Avg Close $50.63 Range $47.19 - $55.19

Q4 2020

Shares 181,170 Value ($000) $11,133 Avg Close $48.27 Range $42.45 - $52.98

Q3 2020

Shares 1,067,642 Value ($000) $57,108 Avg Close $45.64 Range $41.75 - $49.89

Q2 2020

Shares 1,440,959 Value ($000) $81,645 Avg Close $47.91 Range $41.68 - $55.82

Q1 2020

Shares 1,432,533 Value ($000) $91,725 Avg Close $59.44 Range $37.90 - $68.25

Q4 2019

Shares 1,312,475 Value ($000) $103,082 Avg Close $60.15 Range $57.52 - $62.11

Q3 2019

Shares 1,352,594 Value ($000) $103,785 Avg Close $60.34 Range $54.21 - $62.80

Q2 2019

Shares 1,311,825 Value ($000) $102,545 Avg Close $58.01 Range $54.08 - $63.38

Q1 2019

Shares 1,278,940 Value ($000) $94,731 Avg Close $52.65 Range $46.35 - $57.40

Q4 2018

Shares 1,375,369 Value ($000) $86,346 Avg Close $47.68 Range $43.15 - $52.00

Q3 2018

Shares 1,350,389 Value ($000) $78,444 Avg Close $45.23 Range $42.66 - $48.12

Q2 2018

Shares 1,109,749 Value ($000) $67,928 Avg Close $42.43 Range $39.15 - $46.25

Q1 2018

Shares 1,093,708 Value ($000) $59,388 Avg Close $39.62 Range $37.38 - $44.38

Q4 2017

Shares 1,134,582 Value ($000) $68,200 Avg Close $45.46 Range $41.87 - $51.03

Q3 2017

Shares 780,320 Value ($000) $53,741 Avg Close $50.60 Range $48.73 - $51.89

Q2 2017

Shares 80,750 Value ($000) $5,448 Avg Close $49.84 Range $47.18 - $52.32

Q1 2017

Shares 74,900 Value ($000) $4,979 Avg Close $45.51 Range $43.01 - $48.38

Q4 2016

Shares 75,082 Value ($000) $4,606 Avg Close $42.62 Range $38.96 - $45.02

Q3 2016

Shares 75,947 Value ($000) $4,649 Avg Close $43.19 Range $40.45 - $45.62

Q2 2016

Shares 75,930 Value ($000) $4,787 Avg Close $42.44 Range $39.39 - $44.88

Q1 2016

Shares 75,860 Value ($000) $4,561 Avg Close $37.32 Range $31.07 - $42.88

Q4 2015

Shares 73,180 Value ($000) $3,398 Avg Close $30.44 Range $27.84 - $33.06

Q3 2015

Shares 72,720 Value ($000) $3,006 Avg Close $28.18 Range $25.38 - $32.28

Q2 2015

Shares 76,110 Value ($000) $3,322 Avg Close $32.61 Range $29.70 - $35.86

Q1 2015

Shares 76,260 Value ($000) $3,847 Avg Close $34.02 Range $32.42 - $35.85

Q4 2014

Shares 76,360 Value ($000) $4,050 Avg Close $35.24 Range $31.42 - $38.13

Q3 2014

Shares 78,060 Value ($000) $3,738 Avg Close $35.67 Range $31.93 - $41.13

Q2 2014

Shares 78,140 Value ($000) $4,797 Avg Close $38.31 Range $36.56 - $40.65

Q1 2014

Shares 83,920 Value ($000) $4,838 Avg Close $36.15 Range $33.35 - $38.82

Q4 2013

Shares 92,210 Value ($000) $4,842 Avg Close $33.02 Range $30.45 - $35.53

Q3 2013

Shares 92,450 Value ($000) $4,610 Avg Close $32.70 Range $30.21 - $35.44

Q2 2013

Shares 91,650 Value ($000) $4,468 Avg Close $30.15 Range $27.57 - $32.51

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	309,141	$21,461	$66.47	$58.20 - $73.32
Q3 2025	138,460	$8,528	$57.38	$54.13 - $60.96
Q2 2025	145,178	$8,144	$56.47	$52.67 - $59.65
Q1 2025	134,579	$8,162	$56.47	$52.15 - $59.45
Q4 2024	135,066	$7,904	$57.33	$53.67 - $62.19
Q3 2024	135,486	$8,281	$54.39	$49.37 - $58.14
Q2 2024	137,166	$7,459	$50.26	$46.53 - $53.93
Q1 2024	134,289	$7,332	$47.73	$44.68 - $50.77
Q4 2023	138,011	$7,446	$46.16	$41.54 - $51.76
Q3 2023	142,940	$7,231	$50.50	$44.92 - $54.81
Q2 2023	145,513	$8,769	$55.83	$52.26 - $58.57
Q1 2023	145,161	$9,160	$57.47	$51.53 - $64.19
Q4 2022	146,630	$10,314	$58.05	$50.78 - $62.96
Q3 2022	146,237	$9,905	$64.21	$58.14 - $68.58
Q2 2022	147,027	$10,699	$63.81	$56.66 - $68.52
Q1 2022	151,747	$11,688	$58.63	$54.02 - $65.73
Q4 2021	152,036	$10,729	$55.40	$51.95 - $59.51
Q3 2021	151,346	$9,498	$56.46	$51.50 - $60.51
Q2 2021	152,742	$10,024	$55.86	$53.24 - $58.36
Q1 2021	159,052	$10,620	$50.63	$47.19 - $55.19
Q4 2020	181,170	$11,133	$48.27	$42.45 - $52.98
Q3 2020	1,067,642	$57,108	$45.64	$41.75 - $49.89
Q2 2020	1,440,959	$81,645	$47.91	$41.68 - $55.82
Q1 2020	1,432,533	$91,725	$59.44	$37.90 - $68.25
Q4 2019	1,312,475	$103,082	$60.15	$57.52 - $62.11
Q3 2019	1,352,594	$103,785	$60.34	$54.21 - $62.80
Q2 2019	1,311,825	$102,545	$58.01	$54.08 - $63.38
Q1 2019	1,278,940	$94,731	$52.65	$46.35 - $57.40
Q4 2018	1,375,369	$86,346	$47.68	$43.15 - $52.00
Q3 2018	1,350,389	$78,444	$45.23	$42.66 - $48.12
Q2 2018	1,109,749	$67,928	$42.43	$39.15 - $46.25
Q1 2018	1,093,708	$59,388	$39.62	$37.38 - $44.38
Q4 2017	1,134,582	$68,200	$45.46	$41.87 - $51.03
Q3 2017	780,320	$53,741	$50.60	$48.73 - $51.89
Q2 2017	80,750	$5,448	$49.84	$47.18 - $52.32
Q1 2017	74,900	$4,979	$45.51	$43.01 - $48.38
Q4 2016	75,082	$4,606	$42.62	$38.96 - $45.02
Q3 2016	75,947	$4,649	$43.19	$40.45 - $45.62
Q2 2016	75,930	$4,787	$42.44	$39.39 - $44.88
Q1 2016	75,860	$4,561	$37.32	$31.07 - $42.88
Q4 2015	73,180	$3,398	$30.44	$27.84 - $33.06
Q3 2015	72,720	$3,006	$28.18	$25.38 - $32.28
Q2 2015	76,110	$3,322	$32.61	$29.70 - $35.86
Q1 2015	76,260	$3,847	$34.02	$32.42 - $35.85
Q4 2014	76,360	$4,050	$35.24	$31.42 - $38.13
Q3 2014	78,060	$3,738	$35.67	$31.93 - $41.13
Q2 2014	78,140	$4,797	$38.31	$36.56 - $40.65
Q1 2014	83,920	$4,838	$36.15	$33.35 - $38.82
Q4 2013	92,210	$4,842	$33.02	$30.45 - $35.53
Q3 2013	92,450	$4,610	$32.70	$30.21 - $35.44
Q2 2013	91,650	$4,468	$30.15	$27.57 - $32.51