BLACK HILLS CORP

Ticker: BKH CUSIP: 092113109 Class: COM

Optiver Holding B.V.'s Holding History (CIK: 0001859606)

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

Q4 2025

Shares 745 Value ($000) $52 Avg Close $66.47 Range $58.20 - $73.32

Q3 2025

Shares 447 Value ($000) $28 Avg Close $57.38 Range $54.13 - $60.96

Q2 2025

Shares 689 Value ($000) $39 Avg Close $56.47 Range $52.67 - $59.65

Q1 2025

Shares 904 Value ($000) $55 Avg Close $56.47 Range $52.15 - $59.45

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	745	$52	$66.47	$58.20 - $73.32
Q3 2025	447	$28	$57.38	$54.13 - $60.96
Q2 2025	689	$39	$56.47	$52.67 - $59.65
Q1 2025	904	$55	$56.47	$52.15 - $59.45