Great Lakes Dredge & Dock CORP — Director's Dealing 2010

Oct 4, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Great Lakes Dredge & Dock CORP (GLDD)
CIK: 0001372020
Period of Report: 2010-09-30

Reporting Person: SOULELES THOMAS S (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-09-30	Common Stock	A	2689	—	Acquired	2689	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	7991	Indirect

Footnotes

F1: Madison Dearborn Partners IV, L.P. ("MDP IV") is the record owner of the common shares set forth herein. Mr. Souleles is a managing director of the general partner of MDP IV. Mr. Souleles expressly disclaims beneficial ownership of the shares that may be deemed owned by MDP IV except to the extent of his pecuniary interest therein.