Great Lakes Dredge & Dock Corporation
Offer to Purchase for Cash Any and All of its outstanding 7.375% Senior Notes due 2019


Title of Security

CUSIP/ISIN

Outstanding Principal Amount

7.375% Senior Notes due 2019

390607AB5 / US390607AB58

$275,000,000

To view copies of the Offer to Purchase documents please click on the documents below

Offer to Purchase

IF A HOLDER OF NOTES HAS QUESTIONS ABOUT THE OFFER OR PROCEDURES FOR ACCEPTING AN OFFER, THE HOLDER SHOULD CONTACT THE DEALER MANAGER OR THE INFORMATION AND TENDER AGENT AT ONE OF THEIR TELEPHONE NUMBERS SET FORTH BELOW. IF A HOLDER WOULD LIKE ADDITIONAL COPIES OF THIS OFFER TO PURCHASE, THE HOLDER SHOULD CALL THE INFORMATION AND TENDER AGENT AT ONE OF ITS TELEPHONE NUMBERS SET FORTH BELOW.

To obtain additional copies of this Offer to Purchase and the Notice of Guaranteed Delivery, please contact the Information and Tender Agent.

INFORMATION & TENDER AGENT

D.F. King & Co., Inc.

48 Wall Street 22nd Floor
New York, New York 10005
Attn: Andrew Beck

Banks and Brokers call: (212) 269-5550
All Others call Toll Free: (800) 870-0126
Email: gldd@dfking.com

By facsimile:
(For Eligible Institutions only):
(212) 709-3328
Attn: Andrew Beck

For Confirmation:
(212) 269-5552

Any questions about the Offer or procedures for tendering with respect to the Offer may be directed to the Dealer Manager or Information and Tender Agent.

The Dealer Managers for the Tender Offer are:

DEUTSCHE BANK SECURITIES

60 Wall Street, 2nd Floor
New York, New York 10005
Attention: Liability Management Group
Call Collect: (212) 250-7527
Toll-free: (855) 287-1922

SUNTRUST ROBINSON HUMPHREY, INC.

3333 Peachtree Road NE
Atlanta, GA 30326
Attention: Liability Management Group
Call Collect: (404) 926-5047