ORION GROUP HOLDINGS INC

Ticker: ORN CUSIP: 68628V308 Class: Common Stock

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q2 2025

Shares 38,250 Value ($000) $347 Avg Close $7.49 Range $4.64 - $9.42

Q1 2025

Shares 122,815 Value ($000) $642 Avg Close $7.00 Range $4.85 - $9.64

Q4 2024

Shares 109,786 Value ($000) $805 Avg Close $7.23 Range $5.27 - $9.35

Q2 2024

Shares 141,344 Value ($000) $1,344 Avg Close $8.84 Range $6.17 - $11.00

Q1 2024

Shares 220,862 Value ($000) $1,811 Avg Close $6.49 Range $4.41 - $9.84

Q4 2023

Shares 19,347 Value ($000) $96 Avg Close $4.92 Range $4.09 - $6.07

Q3 2023

Shares 24,703 Value ($000) $132 Avg Close $3.96 Range $2.76 - $5.49

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2025	38,250	$347	$7.49	$4.64 - $9.42
Q1 2025	122,815	$642	$7.00	$4.85 - $9.64
Q4 2024	109,786	$805	$7.23	$5.27 - $9.35
Q2 2024	141,344	$1,344	$8.84	$6.17 - $11.00
Q1 2024	220,862	$1,811	$6.49	$4.41 - $9.84
Q4 2023	19,347	$96	$4.92	$4.09 - $6.07
Q3 2023	24,703	$132	$3.96	$2.76 - $5.49