LaVoy Kathleen Mackie Form 4 Great Lakes Dredge & Dock / Kathleen Mackie LaVoy ownership change

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^*

LaVoy Kathleen Mackie

(Last) (First) (Middle)

C/O GREAT LAKES DREDGE & DOCK CORP

2122 YORK ROAD

(Street)

OAK BROOK 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	10% Owner
X	Officer (give title below)	Other (specify below)
SVP & Chief Legal Officer

3. Date of Earliest Transaction (Month/Day/Year)
12/11/2019

4. If Amendment, Date of Original Filed (Month/Day/Year)

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. 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	12/11/2019		M		5,491(1)	A	$5.33	106,257	D
Common Stock	12/11/2019		M		7,563(2)	A	$6.45	113,820	D
Common Stock	12/11/2019		S		11,050	D	$11.8149(3)	102,770	D

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
Employee Stock Option	$5.33	12/11/2019		M			5,491(1)	(4)	06/27/2021	Common Stock	5,491	$0.00	0	D
Employee Stock Option	$6.45	12/11/2019		M			7,563(2)	(5)	06/06/2022	Common Stock	7,563	$0.00	0	D

Explanation of Responses:

1. Represents an exercise of vested employee stock options granted on June 27, 2011 under the Great Lakes Dredge & Dock Corporation 2007 Long-Term Incentive Plan.

2. Represents an exercise of vested employee stock options granted on June 6, 2012 under the Great Lakes Dredge & Dock Corporation 2007 Long-Term Incentive Plan.

3. Represents the weighted average price. The shares were sold in multiple transactions ranging from $11.802 to $11.827, inclusive. Upon request by the Commision staff, the issuer or security holder of the issuer, the reporting person will provide information regarding the number of shares disposed of at each separate price.

4. The options vested in three equal annual installments beginning June 27, 2012.

5. The options vested in three equal annual installments beginning June 6, 2013.

Remarks:

	/s/Kathleen M. LaVoy	12/12/2019
	** 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).
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