OTTER TAIL CORP

Ticker: OTTR CUSIP: 689648103 Class: Common Stock

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

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

Q2 2025

Shares 37 Value ($000) $3 Avg Close $76.31 Range $69.94 - $79.78

Q1 2025

Shares 160 Value ($000) $13 Avg Close $76.90 Range $69.36 - $83.20

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2025	37	$3	$76.31	$69.94 - $79.78
Q1 2025	160	$13	$76.90	$69.36 - $83.20