ORION GROUP HOLDINGS INC

Ticker: ORN CUSIP: 68628V308 Class: Common Stock

Artisan Partners Limited Partnership's Holding History (CIK: 0001466153)

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

Q1 2015

Shares 302,632 Value ($000) $2,681 Avg Close $9.60 Range $8.63 - $11.18

Q4 2014

Shares 1,186,127 Value ($000) $13,107 Avg Close $10.46 Range $8.65 - $12.10

Q3 2014

Shares 1,669,193 Value ($000) $16,659 Avg Close $10.50 Range $9.79 - $11.44

Q2 2014

Shares 1,874,278 Value ($000) $20,298 Avg Close $11.66 Range $10.60 - $13.50

Q1 2014

Shares 1,974,199 Value ($000) $24,816 Avg Close $11.41 Range $10.19 - $12.83

Q4 2013

Shares 2,082,272 Value ($000) $25,050 Avg Close $11.62 Range $10.35 - $13.77

Q3 2013

Shares 2,129,231 Value ($000) $22,165 Avg Close $11.04 Range $9.20 - $13.52

Q2 2013

Shares 2,141,300 Value ($000) $25,888,317 Avg Close $10.70 Range $8.41 - $12.77

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2015	302,632	$2,681	$9.60	$8.63 - $11.18
Q4 2014	1,186,127	$13,107	$10.46	$8.65 - $12.10
Q3 2014	1,669,193	$16,659	$10.50	$9.79 - $11.44
Q2 2014	1,874,278	$20,298	$11.66	$10.60 - $13.50
Q1 2014	1,974,199	$24,816	$11.41	$10.19 - $12.83
Q4 2013	2,082,272	$25,050	$11.62	$10.35 - $13.77
Q3 2013	2,129,231	$22,165	$11.04	$9.20 - $13.52
Q2 2013	2,141,300	$25,888,317	$10.70	$8.41 - $12.77