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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1372020	Great Lakes Dredge & Dock Corp	GLDD	Heavy Construction Other Than Bldg Const - Contractors (1600)	205336063

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1455941	Lasse Petterson	C/O Great Lakes Dredge &Amp; Dock Corp. 9811 Katy Freeway, Suite 1200 Houston TX 77024	Ceo & President	No	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2024-08-19	53,771	$9.06	987,758	No	4	S	Direct
Common Stock	Disposition	2024-08-20	10,147	$9.10	977,611	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct
No	4	S	Direct

Footnotes

The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 16, 2024.
Represents the weighted average price. The shares were sold in multiple transactions ranging from $9.00 to $9.12, inclusive. Upon request by the Commission staff, the issuer or security holder of the issuer, the reporting person will provide information regarding the number of shares disposed at each separate price.
Represents the weighted average price. The shares were sold in multiple transactions ranging from $9.00 to $9.19, inclusive. Upon request by the Commission staff, the issuer or security holder of the issuer, the reporting person will provide information regarding the number of shares disposed at each separate price.