Eleni Beyko - May 6, 2025 Form 4 Insider Report for Great Lakes Dredge & Dock CORP (GLDD)

Signature
/s/Vivienne R. Schiffer, by Power of Attorney
Stock symbol
GLDD
Transactions as of
May 6, 2025
Transactions value $
-$231,600
Form type
4
Date filed
5/8/2025, 05:43 PM
Previous filing
May 7, 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
BEYKO ELENI SVP - Offshore Energy C/O GREAT LAKES DREDGE & DOCK CORP., 9811 KATY FREEWAY, SUITE 1200, HOUSTON /s/Vivienne R. Schiffer, by Power of Attorney 2025-05-08 0001929993

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction GLDD Common Stock Sale -$232K -22.6K -31.05% $10.26 50.1K May 6, 2025 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 13, 2024.
F2 Represents the weighted average price. The shares were sold in multiple transactions ranging from $10.00 to $10.495, 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.