GREAT LAKES DREDGE & DOCK CO

Ticker: GLDD CUSIP: 390607109 Class: Common Stock

Cornerstone Advisory, LLC's Holding History (CIK: 0001668189)

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

Q4 2021

Shares 450 Value ($000) $7 Avg Close $15.22 Range $14.26 - $16.25

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	450	$7	$15.22	$14.26 - $16.25