GREAT LAKES DREDGE & DOCK CO

Ticker: GLDD CUSIP: 390607109 Class: Common Stock

Alberta Investment Management Corp's Holding History (CIK: 0001463559)

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

Q3 2020

Shares 51,200 Value ($000) $487 Avg Close $9.17 Range $8.17 - $10.57

Q2 2020

Shares 105,500 Value ($000) $977 Avg Close $8.75 Range $7.42 - $10.80

Q1 2020

Shares 51,200 Value ($000) $425 Avg Close $9.96 Range $6.75 - $11.96

Q4 2019

Shares 54,900 Value ($000) $622 Avg Close $10.68 Range $9.02 - $11.94

Q3 2019

Shares 123,100 Value ($000) $1,286 Avg Close $10.57 Range $9.39 - $11.81

Q2 2019

Shares 62,300 Value ($000) $688 Avg Close $10.32 Range $8.86 - $11.45

Q1 2019

Shares 94,600 Value ($000) $843 Avg Close $7.78 Range $6.43 - $9.21

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2020	51,200	$487	$9.17	$8.17 - $10.57
Q2 2020	105,500	$977	$8.75	$7.42 - $10.80
Q1 2020	51,200	$425	$9.96	$6.75 - $11.96
Q4 2019	54,900	$622	$10.68	$9.02 - $11.94
Q3 2019	123,100	$1,286	$10.57	$9.39 - $11.81
Q2 2019	62,300	$688	$10.32	$8.86 - $11.45
Q1 2019	94,600	$843	$7.78	$6.43 - $9.21