Companies / Great Lakes Dredge & Dock Corp

Great Lakes Dredge & Dock Corp

GLDDCIK 1372020HOUSTON, TX

Financials · FY2025

Revenue$888.28M
Net income$73.47M
Total debt$378.28M
Cash$13.36M
Diluted EPS$1.08
Shares outstanding66.8M

Ownership

66.8M shares outstanding · as of Feb 13, 2026
16.6%10%+ / strategic
Ownership
10%+ / strategic16.60%11,087,398
Institutions83.16%55,532,521
Public float0.24%160,879

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 13

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Insider% of sharesShares
Armstrong Dana ADirector
0.00%0
Bayer RyanVP & CAO
0.00%0
Beyko EleniSVP - Offshore Energy
0.00%0
Dickerson Lawrence RDirector
0.00%0
Gunsten ChristopherSVP-Proj Svcs & Fleet Engineer
0.00%0
Hanson William HSVP, Market Development
0.00%0
Johanson DavidSVP-Project Acquisition & Ops
0.00%0
Kornblau Scott LeeSVP & CFO
0.00%0
Petterson LasseCEOCEO & President · Director
0.00%0
Schiffer VivienneSVP, CLO, CCO & Corp Secretary
0.00%0

Institutional holders 239

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HolderValue% of shares
BlackRock, Inc.$90.49M10.33%
Dimensional Fund Advisors LP$56.42M6.44%
Vanguard Group Inc$52.31M5.97%
Jennison Associates LLC$49.94M5.70%
Harvey Partners, LLC$48.59M5.55%
American Century Companies Inc$33.91M3.87%
Two Sigma Investments, LP$33.82M2.98%
Geode Capital Management, LLC$28.53M2.51%
Balyasny Asset Management L.P.$27.66M2.44%
The TCW Group, Inc., on behalf of the TCW Business Unit$24.59M2.81%

Activity

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InsidersInstitutions
What insiders are doing in this stock (Form 4).
DateActorActionSecurityValueShares ΔPosition afterImpact
Mar 16, 2026Petterson Lasse
CEO
OtherCommon Stock$629.8K-37K
-2.68%
1,349,540
2.02% of shares
low
Mar 16, 2026Petterson Lasse
CEO
OtherCommon Stock$525.8K-31K
-2.23%
1,361,845
2.04% of shares
low
Mar 16, 2026Petterson Lasse
CEO
OtherCommon Stock$339.2K-20K
-1.48%
1,329,507
1.99% of shares
low
Mar 16, 2026Petterson Lasse
CEO
OtherCommon Stock$262.9K-16K
-1.17%
1,313,978
1.97% of shares
low
Mar 16, 2026Kornblau Scott Lee
Executive
OtherCommon Stock$148.3K-9K
-5.61%
147,517
0.22% of shares
low
Dec 31, 2025Beyko Eleni
Executive
OtherCommon Stock$106.1K-8K
-6.04%
125,807
0.19% of shares
low
Mar 16, 2026Kornblau Scott Lee
Executive
OtherCommon Stock$99.1K-6K
-3.67%
153,608
0.23% of shares
low
Mar 16, 2026Beyko Eleni
Executive
OtherCommon Stock$80.8K-5K
-3.56%
129,170
0.19% of shares
low

5%+ ownership events

Schedule 13D / 13G
FilerStance% of classSharesDate
Vanguard Group IncPassive13G/A—0—
BlackRock, Inc.Passive13G/A—6,701,811—
Dimensional Fund Advisors LPPassive13G/A———
BlackRock, Inc.Passive13G/A—5,467,592—
Jennison Associates LLCPassive13G/A—1,029,264—
Vanguard Capital ManagementPassive13G—3,356,323—

Securities

via CUSIP / OpenFIGI
SymbolTypeMarketCUSIPFIGI
GLDD——390607109—