William H. Hanson - 16 Mar 2026 Form 4 Insider Report for Great Lakes Dredge & Dock CORP (GLDD)

Role
SVP, Market Development
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, 16:57:03 UTC
Previous filing
25 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
HANSON WILLIAM H SVP, Market Development C/O GREAT LAKES DREDGE & DOCK CORP., 9811 KATY FREEWAY, SUITE 1200, HOUSTON /s/Vivienne R. Schiffer, by Power of Attorney 18 Mar 2026 0001808410

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction GLDD Common Stock Tax liability -1,030 -1.5% $16.93* 67,956 16 Mar 2026 Direct
transaction GLDD Common Stock Award +7,853 +12% 75,809 16 Mar 2026 Direct F1
transaction GLDD Common Stock Tax liability -1,913 -2.5% $16.93* 73,896 16 Mar 2026 Direct
transaction GLDD Common Stock Tax liability -639 -0.86% $16.93* 73,257 16 Mar 2026 Direct
transaction GLDD Common Stock Award +5,242 +7.2% 78,499 16 Mar 2026 Direct F2
transaction GLDD Common Stock Tax liability -1,277 -1.6% $16.93* 77,222 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 Mr. Hanson'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 Mr. Hanson's performance-based restricted stock units granted on March 15, 2024.