Lawrence R. Dickerson - 30 Dec 2022 Form 4 Insider Report for Great Lakes Dredge & Dock CORP (GLDD)

Role: Director
Signature: /s/Vivienne R. Schiffer, by Power of Attorney
Issuer symbol: GLDD
Transactions as of: 30 Dec 2022
Net transactions value: $0
Form type: 4
Filing time: 03 Jan 2023, 18:06:22 UTC
Previous filing: 04 Oct 2022
Next filing: 03 Feb 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	GLDD	Common Stock						88,562	30 Dec 2022	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	GLDD	Deferred Stock Units	Award	$0	+11,408	+88%	$0.000000	24,388	30 Dec 2022	Common Stock	11,408		Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Deferred Stock Units ("DSUs") granted December 30, 2022 and deferred pursuant to the Company's Director Deferral Plan. The DSUs will be payable in common stock on a 1-for-1 basis on the date upon which Mr. Dickerson's board service ends.