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Great Lakes Dredge & Dock CORP

GLDDDelisted Apr 1, 2026
Industry
Heavy Construction Other Than Bldg Const - Contractors
SEC CIK
0001372020

Great Lakes Dredge & Dock CORP was delisted on Apr 1, 2026; its insiders filed their last Form 4 on Apr 1, 2026; 182 institutions reported holding it in 13F filings for Q1 2026, worth $931.0M in total; no superinvestor held it.

Holders of 5% or more of GLDD

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Great Lakes Dredge & Dock CORP, largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of GLDD
HolderLatest formStakeChangeFirst filedLatest filingFiling
BlackRock, Inc.13G/A8.20%5.47M shares−1.80 ppfrom 10.00%Apr 24, 20253 filingsApr 28, 2026SEC
Prudential Financial Inc13G/A6.30%4.29M shares−1.60 ppfrom 7.90%Feb 9, 20214 filingsNov 7, 2025SEC
Vanguard Capital Management LLC13G5.02%3.36M sharesNewApr 30, 20261 filingApr 30, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

28 Schedule 13D and 13G filings on Great Lakes Dredge & Dock CORP, newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on GLDD
Filed (ET)FilerFormStakeChangeEvent dateFiling
Jul 14, 20261:27 PM ETDimensional Fund Advisors LP13G/A0.00%0 shares−5.10 ppfrom 5.10%Below 5%Jun 30, 2026SEC
May 6, 20264:11 PM ETJennison Associates LLC13G/A1.50%1.03M shares−4.80 ppfrom 6.30%Below 5%Mar 31, 2026SEC
Apr 30, 202610:41 AM ETVanguard Capital Management LLC13G5.02%3.36M sharesNewMar 31, 2026SEC
Apr 28, 20264:34 PM ETBlackRock, Inc.13G/A8.20%5.47M shares−1.80 ppfrom 10.00%Mar 31, 2026SEC
Apr 9, 20261:42 PM ETDimensional Fund Advisors LP13G/A5.10%3.39M shares–Mar 31, 2026SEC
Mar 27, 20269:35 AM ETVanguard Group Inc13G/A0.00%0 shares–Below 5%Mar 13, 2026SEC
Mar 4, 20264:44 PM ETBlackRock, Inc.13G/A10.00%6.70M shares+0.05 ppfrom 9.95%Feb 28, 2026SEC
Nov 7, 20252:10 PM ETPrudential Financial Inc13G/A6.30%4.29M shares−1.60 ppfrom 7.90%Sep 30, 2025SEC
Nov 5, 20251:27 PM ETJennison Associates LLC13G/A6.30%4.27M shares−1.60 ppfrom 7.90%Sep 30, 2025SEC
May 15, 20255:48 PM ETPrudential Financial Inc13G/A7.90%5.33M shares–Mar 31, 2025SEC
May 9, 202512:14 PM ETJennison Associates LLC13G/A7.90%5.31M shares–Mar 31, 2025SEC
Apr 24, 20259:27 AM ETBlackRock, Inc.13G/A9.95%6.71M shares–Mar 31, 2025SEC
Feb 5, 20254:31 PM ETAlliancebernstein L.P.13G/A4.30%2.87M shares−1.50 ppfrom 5.80%Below 5%Dec 31, 2024SEC
Nov 15, 20241:44 PM ETAlliancebernstein L.P.13G/A5.80%3.89M shares–Sep 30, 2024SEC
Feb 14, 2022Prudential Financial Inc13G/AOld format–––SEC
Feb 14, 2022Ashford Capital Management Inc13G/AOld format–––SEC
Feb 11, 2022Russell Investments Group, Ltd.13G/AOld format–––SEC
Feb 10, 2022Vanguard Group Inc13G/AOld format–––SEC
Feb 10, 2022Jennison Associates LLC13G/AOld format–––SEC
Feb 8, 2022Dimensional Fund Advisors LP13G/AOld format–––SEC
Feb 2, 20227:11 PM ETBlackRock Inc.13G/AOld format–––SEC
Feb 1, 2022Franklin Mutual Advisers LLC13GOld format–New–SEC
Feb 16, 2021Ashford Capital Management Inc13GOld format–New–SEC
Feb 12, 2021Dimensional Fund Advisors LP13G/AOld format–––SEC
Feb 10, 2021Vanguard Group Inc13G/AOld format–––SEC
Feb 10, 2021Jennison Associates LLC13G/AOld format–––SEC
Feb 9, 2021Prudential Financial Inc13G/AOld format–––SEC
Jan 29, 20219:56 AM ETBlackRock Inc.13G/AOld format–––SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell Great Lakes Dredge & Dock CORP shares.

No Form 144 notices for Great Lakes Dredge & Dock CORP are on file.