ORION GROUP HOLDINGS INC

Ticker: ORN CUSIP: 68628V308 Class: Common Stock

EMERALD ADVISERS, LLC's Holding History (CIK: 0001015083)

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

Q3 2015

Shares 21,275 Value ($000) $127 Avg Close $6.98 Range $5.56 - $7.73

Q2 2015

Shares 21,275 Value ($000) $154 Avg Close $8.16 Range $7.04 - $9.60

Q1 2015

Shares 12,905 Value ($000) $123 Avg Close $9.60 Range $8.63 - $11.18

Q4 2014

Shares 14,975 Value ($000) $165 Avg Close $10.46 Range $8.65 - $12.10

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2015	21,275	$127	$6.98	$5.56 - $7.73
Q2 2015	21,275	$154	$8.16	$7.04 - $9.60
Q1 2015	12,905	$123	$9.60	$8.63 - $11.18
Q4 2014	14,975	$165	$10.46	$8.65 - $12.10