SEC FORM 4 SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
 
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
MADISON DEARBORN CAPITAL PARTNERS IV LP

(Last) (First) (Middle)
GREAT LAKES DREDGE & DOCK CORPORATION
2122 YORK ROAD

(Street)
OAKBROOK IL 60523

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Great Lakes Dredge & Dock CORP [ GLDD ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
08/19/2009
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 08/19/2009 S 14,257,572 D $5.49 0 I See Footnote(1)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
1. Name and Address of Reporting Person*
MADISON DEARBORN CAPITAL PARTNERS IV LP

(Last) (First) (Middle)
GREAT LAKES DREDGE & DOCK CORPORATION
2122 YORK ROAD

(Street)
OAKBROOK IL 60523

(City) (State) (Zip)
1. Name and Address of Reporting Person*
MADISON DEARBORN PARTNERS IV LP

(Last) (First) (Middle)
GREAT LAKES DREDGE & DOCK CORPORATION
2122 YORK ROAD

(Street)
OAKBROOK IL 60523

(City) (State) (Zip)
1. Name and Address of Reporting Person*
MADISON DEARBORN PARTNERS LLC

(Last) (First) (Middle)
GREAT LAKES DREDGE & DOCK CORPORATION
2122 YORK ROAD

(Street)
OAKBROOK IL 60523

(City) (State) (Zip)
Explanation of Responses:
1. The 14,257,572 shares sold as set forth herein were directly owned by Madison Capital Partners IV, L.P. ("MDCP"). Madison Dearborn Partners IV, L.P. ("MDP IV") is the general partner of MDCP. John A. Canning, Jr., Paul J. Finnegan and Samuel M. Mencoff are the sole members of a limited partner committee of MDP IV that has the power, acting by majority vote, to vote or dispose of the shares held by MDCP. Madison Dearborn Partners, LLC ("MDP") is the general partner of MDP IV. Each of MDP, MDP IV and the members of the limited partner committee of MDP IV disclaims beneficial ownership of the shares formerly held directly by MDCP, except to the extent of his or its respective pecuniary interest therein.
Madison Dearborn Capital Partners IV, L.P. By: Madison Dearborn Partners IV, L.P., its General Partner By: Madison Dearborn Partners, LLC, its General Partner By: /s/ Douglas C. Grissom, Managing Director 08/21/2009
Madison Dearborn Partners IV, L.P. By: Madison Dearborn Partners, LLC, its General Partner By: /s/ Douglas C. Grissom, Managing Director 08/21/2009
Madison Dearborn Partners, LLC By: /s/ Douglas C. Grissom, Managing Director 08/21/2009
** Signature of Reporting Person Date
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* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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