GREAT LAKES DREDGE & DOCK CO

Ticker: GLDD CUSIP: 390607109 Class: Common Stock

PICTON MAHONEY ASSET MANAGEMENT's Holding History (CIK: 0001539041)

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

Q3 2018

Shares 175,000 Value ($000) $1,085 Avg Close $5.57 Range $4.85 - $6.20

Q2 2018

Shares 175,000 Value ($000) $919 Avg Close $4.93 Range $4.38 - $5.45

Q1 2018

Shares 160,789 Value ($000) $740 Avg Close $4.74 Range $4.15 - $5.50

Q2 2016

Shares 49,000 Value ($000) $214 Avg Close $4.50 Range $3.96 - $5.09

Q1 2016

Shares 49,000 Value ($000) $219 Avg Close $3.58 Range $2.96 - $4.50

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	175,000	$1,085	$5.57	$4.85 - $6.20
Q2 2018	175,000	$919	$4.93	$4.38 - $5.45
Q1 2018	160,789	$740	$4.74	$4.15 - $5.50
Q2 2016	49,000	$214	$4.50	$3.96 - $5.09
Q1 2016	49,000	$219	$3.58	$2.96 - $4.50