AVISTA CORP

Ticker: AVA CUSIP: 05379B107 Class: Common Stock

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

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

Q4 2025

Shares 406 Value ($000) $16 Avg Close $38.78 Range $36.05 - $41.60

Q3 2025

Shares 56 Value ($000) $2 Avg Close $36.47 Range $34.98 - $37.71

Q1 2021

Shares 67,330 Value ($000) $3,215 Avg Close $32.79 Range $29.04 - $39.34

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	406	$16	$38.78	$36.05 - $41.60
Q3 2025	56	$2	$36.47	$34.98 - $37.71
Q1 2021	67,330	$3,215	$32.79	$29.04 - $39.34