ORION GROUP HOLDINGS INC

Ticker: ORN CUSIP: 68628V308 Class: Common Stock

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

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

Q4 2025

Shares 264 Value ($000) $3 Avg Close $9.69 Range $8.08 - $11.90

Q3 2025

Shares 684 Value ($000) $6 Avg Close $7.88 Range $6.44 - $9.95

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	264	$3	$9.69	$8.08 - $11.90
Q3 2025	684	$6	$7.88	$6.44 - $9.95