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$GLDD All transactions

Great Lakes Dredge & Dock CORP

A

$ Value

Shares

13,179

Price

Filed

Mar 25

Insider

Name

GUNSTEN CHRISTOPHER

Title

SVP-Proj Svcs & Fleet Engineer

CIK

0001939594

Roles

Officer

Transaction Details

Transaction Date

2025-05-08

Code

A

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

85,952

Footnotes

This Form 4/A is being filed to correct an administrative error in the original Form 4 filed on May 12, 2025 in which the vesting date for the Restricted Stock Units was inadvertently reported as beginning on March 15, 2026. The correct vesting date begins on May 8, 2026.

Filing Info

Accession No.

0001193125-26-124281

Form Type

4/A

Issuer CIK

0001372020

GUNSTEN CHRISTOPHER's History

Date Ticker Type Value
2026-04-01 GLDD A
2026-04-01 GLDD U
2026-03-16 GLDD F $37K
2026-03-16 GLDD A
2026-03-16 GLDD F $69K
2026-03-16 GLDD F $23K
2026-03-16 GLDD A
2026-03-16 GLDD F $46K
2026-02-23 GLDD A
2025-05-08 GLDD A

Other Insiders at GLDD (90d)

Insider Bought Sold Last
DICKERSON LAWRENCE R 2026-04-01
Shanahan Kathleen M 2026-04-01
Petterson Lasse
CEO & President
2026-04-01
Steger Ronald 2026-04-01
Shipp Earl L 2026-04-01
Kornblau Scott Lee
SVP & CFO
2026-04-01
HANSON WILLIAM H
SVP, Market Development
2026-04-01
Schiffer Vivienne
SVP, CLO, CCO & Corp Secretary
2026-04-01
Armstrong Dana A 2026-04-01
BEYKO ELENI
SVP - Offshore Energy
2026-04-01
GUNSTEN CHRISTOPHER
SVP-Proj Svcs & Fleet Engineer
2026-04-01
JOHANSON DAVID
SVP-Project Acquisition & Ops
2026-04-01
BAYER RYAN
VP & CAO
2026-04-01