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

Role
SVP-Proj Svcs & Fleet Engineer
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, 16:51:58 UTC
Previous filing
25 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
GUNSTEN CHRISTOPHER SVP-Proj Svcs & Fleet Engineer C/O GREAT LAKES DREDGE & DOCK CORP., 9811 KATY FREEWAY, SUITE 1200, HOUSTON /s/Vivienne R. Schiffer, by Power of Attorney 18 Mar 2026 0001939594

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction GLDD Common Stock Tax liability -2,204 -2.2% $16.93* 97,736 16 Mar 2026 Direct
transaction GLDD Common Stock Award +12,646 +13% 110,382 16 Mar 2026 Direct F1
transaction GLDD Common Stock Tax liability -4,091 -3.7% $16.93* 106,291 16 Mar 2026 Direct
transaction GLDD Common Stock Tax liability -1,367 -1.3% $16.93* 104,924 16 Mar 2026 Direct
transaction GLDD Common Stock Award +8,444 +8% 113,368 16 Mar 2026 Direct F2
transaction GLDD Common Stock Tax liability -2,732 -2.4% $16.93* 110,636 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. Gunsten'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. Gunsten's performance-based restricted stock units granted on March 15, 2024.