GREAT LAKES DREDGE & DOCK CO

Ticker: GLDD CUSIP: 390607109 Class: Common Stock

Blackstone Inc.'s Holding History (CIK: 0001393818)

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

Q3 2017

Shares 379,528 Value ($000) $1,841 Avg Close $4.17 Range $3.60 - $5.15

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2017	379,528	$1,841	$4.17	$3.60 - $5.15