Eleni Beyko - 16 Mar 2026 Form 4 Insider Report for Great Lakes Dredge & Dock CORP (GLDD)

Role
SVP - Offshore Energy
Signature
/s/Vivienne R. Schiffer, by Power of Attorney
Issuer symbol
GLDD
Transactions as of
16 Mar 2026
Net transactions value
$0
Form type
4
Filing time
18 Mar 2026, 16:44:56 UTC
Previous filing
25 Feb 2026
SEC
View on sec.gov

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 18 Mar 2026 0001929993

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction GLDD Common Stock Tax liability -2,645 -2.2% $16.93* 119,189 16 Mar 2026 Direct
transaction GLDD Common Stock Award +14,754 +12% 133,943 16 Mar 2026 Direct F1
transaction GLDD Common Stock Tax liability -4,773 -3.6% $16.93* 129,170 16 Mar 2026 Direct
transaction GLDD Common Stock Tax liability -1,939 -1.5% $16.93* 127,231 16 Mar 2026 Direct
transaction GLDD Common Stock Award +9,852 +7.7% 137,083 16 Mar 2026 Direct F2
transaction GLDD Common Stock Tax liability -3,188 -2.3% $16.93* 133,895 16 Mar 2026 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Ms. Beyko's performance-based restricted stock units granted on March 15, 2023.
F2 Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Ms. Beyko's performance-based restricted stock units granted on March 15, 2024.