Great Lakes Dredge & Dock Corporation
Great Lakes Dredge & Dock CORP (Form: 4, Received: 02/15/2013 17:06:56)
FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Deutsch Peter
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)

__ X __ Director                      _____ 10% Owner
_____ Officer (give title below)      _____ Other (specify below)
(Last)          (First)          (Middle)

GREAT LAKES DREDGE & DOCK CORPORATION, 2122 YORK ROAD
3. Date of Earliest Transaction (MM/DD/YYYY)

11/16/2009
(Street)

OAK BROOK, IL 60523
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ 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. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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   (1) 11/16/2009     S    1000   D $6.94   (2) 35974   D    
Common Stock   11/16/2009     P    1000   A $6.94   36974   D    
Common Stock   11/17/2009     S    23401   D $6.71   (3) 13573   D    
Common Stock   11/17/2009     P    23401   A $6.72   (4) 36974   D    
Common Stock   4/7/2010     S    9204   D $5.55   (5) 33157   (6) D    
Common Stock   4/7/2010     P    9204   A $5.56   42361   D    
Common Stock   11/28/2011     S    9843   D $5.60   (7) 48617   (6) D    
Common Stock   11/28/2011     P    9843   A $5.60   (8) 58460   D    
Common Stock   1/10/2012     S    2411   D $6.07   (9) 58859   (6) D    
Common Stock   1/10/2012     P    2411   A $6.07   (10) 61270   D    
Common Stock   11/8/2012     S    16217   D $8.21   (11) 52980   (6) D    
Common Stock   11/8/2012     P    16217   A $8.22   (12) 69197   D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 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 of Derivative Security: 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

Explanation of Responses:
( 1)  The transactions reported on this Form 4 are being reported late due to the reporting person's prior understanding that the transactions reported herein were not subject to reporting under Section 16(a) of the Exchange Act. Pursuant to Section 16(b) of the of the Securities Exchange Act of 1934 (the "Exchange Act"), the reporting person has agreed to pay to Great Lakes Dredge & Dock Corporation $9,470.82, representing the full amount of the profit realized in connection with the short-swing transactions reported on this Form 4, less transaction costs of such transactions.
( 2)  Represents the weighted average sale price of $6.94 rounded to the nearest hundredths. The highest price at which the shares were sold was $6.94 and the lowest price at which the shares were sold was $6.93, in each case, rounded to the nearest hundredths. The Reporting Person undertakes that he will provide, upon request by the staff of the U.S. Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of securities sold at each separate price.
( 3)  Represents the weighted average sale price of $6.71 rounded to the nearest hundredths. The highest price at which the shares were sold was $6.75 and the lowest price at which the shares were sold was $6.66, in each case, rounded to the nearest hundredths. The Reporting Person undertakes that he will provide, upon request by the staff of the U.S. Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of securities sold at each separate price.
( 4)  Represents the weighted average purchase price of $6.72 rounded to the nearest hundredths. The highest price at which the shares were purchased was $6.77 and the lowest price at which the shares were purchased was $6.68, in each case, rounded to the nearest hundredths. The Reporting Person undertakes that he will provide, upon request by the staff of the U.S. Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of securities purchased at each separate price.
( 5)  Represents the weighted average sale price of $5.55 rounded to the nearest hundredths. The highest price at which the shares were sold was $5.56 and the lowest price at which the shares were sold was $5.55, in each case, rounded to the nearest hundredths. The Reporting Person undertakes that he will provide, upon request by the staff of the U.S. Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of securities sold at each separate price.
( 6)  This total takes into account the previously-reported receipt by the Reporting Person of stock awards in the interim period.
( 7)  Represents the weighted average sale price of $5.60 rounded to the nearest hundredths. The highest price at which the shares were sold was $5.61 and the lowest price at which the shares were sold was $5.58, in each case, rounded to the nearest hundredths. The Reporting Person undertakes that he will provide, upon request by the staff of the U.S. Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of securities sold at each separate price.
( 8)  Represents the weighted average purchase price of $5.60 rounded to the nearest hundredths. The highest price at which the shares were purchased was $5.61 and the lowest price at which the shares were purchased was $5.59, in each case, rounded to the nearest hundredths. The Reporting Person undertakes that he will provide, upon request by the staff of the U.S. Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of securities purchased at each separate price.
( 9)  Represents the weighted average sale price of $6.07 rounded to the nearest hundredths. The highest price at which the shares were sold was $6.08 and the lowest price at which the shares were sold was $6.06, in each case, rounded to the nearest hundredths. The Reporting Person undertakes that he will provide, upon request by the staff of the U.S. Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of securities sold at each separate price.
( 10)  Represents the weighted average purchase price of $6.07 rounded to the nearest hundredths. The highest price at which the shares were purchased was $6.08 and the lowest price at which the shares were purchased was $6.04, in each case, rounded to the nearest hundredths. The Reporting Person undertakes that he will provide, upon request by the staff of the U.S. Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of securities purchased at each separate price.
( 11)  Represents the weighted average sale price of $8.21 rounded to the nearest hundredths. The highest price at which the shares were sold was $8.23 and the lowest price at which the shares were sold was $8.20, in each case, rounded to the nearest hundredths. The Reporting Person undertakes that he will provide, upon request by the staff of the U.S. Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of securities sold at each separate price.
( 12)  Represents the weighted average purchase price of $8.22 rounded to the nearest hundredths. The highest price at which the shares were purchased was $8.25 and the lowest price at which the shares were purchased was $8.21, in each case, rounded to the nearest hundredths. The Reporting Person undertakes that he will provide, upon request by the staff of the U.S. Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of securities purchased at each separate price.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Deutsch Peter
GREAT LAKES DREDGE & DOCK CORPORATION
2122 YORK ROAD
OAK BROOK, IL 60523
X



Signatures
/s/ Kathleen M. LaVoy, by power of attorney 2/15/2013
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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