Great Lakes Dredge & Dock CORP — Director's Dealing 2013

May 29, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Great Lakes Dredge & Dock CORP (GLDD)
CIK: 0001372020
Period of Report: 2013-05-27

Reporting Person: Simonelli David E (President, Dredging Operations)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-27	Common Stock	F	4314	$8.22	Disposed	104199	Direct