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GREAT LAKES DREDGE & DOCK CO (GLDD) Stock Ownership and Short Interest

USA - NASDAQ:GLDD - US3906071093 - Common Stock

11.03 USD
-0.12 (-1.08%)
Last: 10/27/2025, 8:24:17 PM
11.03 USD
0 (0%)
After Hours: 10/27/2025, 8:24:17 PM
GLDD Ownership Chart.GLDD Ownership Chart: showing Insider, Institutional ownership and shares available to the public.GLDD Ownership.InsiderInstitutionalPublic



Shares Outstanding68.00M
Float66.17M
Float Short Interest Percentage1.06%
Owners (insider)2.45%
Owners (institutional)82.95%
Owners (insider) change3.64%
Owners (institutional) change0.43%
GLDD Institutional Ownership HistoryGLDD Institutional Ownership HistoryGLDD Institutional Ownership History Sep 2021 Mar 2022 Sep 2022 Mar 2023 Sep 2023 Mar 2024 Sep 2024 Mar 2025 Sep 2025 20M 40M 60M
GLDD Historical Insider Transactions ChartGLDD Historical Insider Buy and Sell Transactions ChartGLDD Historical Insider Transactions Nov 2024 Dec 2024 Jan 2025 Feb 2025 Mar 2025 Apr 2025 May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 0 100K 200K
Date Name Type Shares Price Amount
Sep 30, 2025 Armstrong Dana A Grant 2002 0.00 $ 0.00
Sep 30, 2025 Shipp Earl L Grant 2002 0.00 $ 0.00
Aug 11, 2025 Kornblau Scott Lee Open Market Sale 59805 11.48 $ 686,322.18
Jun 30, 2025 Shipp Earl L Grant 1969 0.00 $ 0.00
Jun 30, 2025 Armstrong Dana A Grant 1969 0.00 $ 0.00
Jun 3, 2025 Steger Ronald Open Market Sale 5000 11.59 $ 57,925.00
May 8, 2025 BEYKO ELENI Grant 15376 $ 0.00
May 8, 2025 BAYER RYAN Grant 10126 $ 0.00
May 8, 2025 Schiffer Vivienne Grant 18035 $ 0.00
May 8, 2025 GUNSTEN CHRISTOPHER Grant 13179 $ 0.00
May 8, 2025 JOHANSON DAVID Grant 13179 $ 0.00
May 8, 2025 HANSON WILLIAM H Grant 8237 $ 0.00
May 8, 2025 Petterson Lasse Grant 125145 $ 0.00
May 8, 2025 Kornblau Scott Lee Grant 25058 $ 0.00
May 8, 2025 BEYKO ELENI Grant 40000 $ 0.00
May 6, 2025 BEYKO ELENI Open Market Sale 22579 10.26 $ 231,599.58
May 5, 2025 BEYKO ELENI Option Excercise 1458 9.54 $ 13,909.32
May 5, 2025 JOHANSON DAVID Option Excercise 825 9.54 $ 7,870.50
May 5, 2025 Kornblau Scott Lee Option Excercise 2746 9.54 $ 26,196.84
May 5, 2025 HANSON WILLIAM H Option Excercise 600 9.54 $ 5,724.00
May 5, 2025 GUNSTEN CHRISTOPHER Option Excercise 922 9.54 $ 8,795.88
May 5, 2025 Petterson Lasse Option Excercise 4541 9.54 $ 43,321.14
May 5, 2025 Schiffer Vivienne Option Excercise 1753 9.54 $ 16,723.62
Apr 24, 2025 BEYKO ELENI Option Excercise 8088 9.06 $ 73,277.28
Mar 31, 2025 Shipp Earl L Grant 5057 0.00 $ 0.00
Mar 31, 2025 STEUERT D MICHAEL Grant 5057 0.00 $ 0.00
Mar 31, 2025 Armstrong Dana A Grant 4833 0.00 $ 0.00
Mar 17, 2025 BAYER RYAN Option Excercise 1938 8.70 $ 16,860.60
Mar 17, 2025 BAYER RYAN Grant 2159 $ 0.00
Mar 17, 2025 GUNSTEN CHRISTOPHER Option Excercise 8734 8.70 $ 75,985.80
Mar 17, 2025 GUNSTEN CHRISTOPHER Grant 20897 $ 0.00
Mar 17, 2025 BEYKO ELENI Option Excercise 12052 8.70 $ 104,852.40
Mar 17, 2025 BEYKO ELENI Grant 24380 $ 0.00
Mar 17, 2025 JOHANSON DAVID Option Excercise 7776 8.70 $ 67,651.20
Mar 17, 2025 JOHANSON DAVID Grant 20897 $ 0.00
Mar 17, 2025 HANSON WILLIAM H Option Excercise 4829 8.70 $ 42,012.30
Mar 17, 2025 HANSON WILLIAM H Grant 12971 $ 0.00
Mar 17, 2025 Schiffer Vivienne Option Excercise 9091 8.70 $ 79,091.70
Mar 17, 2025 Schiffer Vivienne Grant 24445 $ 0.00
Mar 17, 2025 Petterson Lasse Grant 171943 $ 0.00
Mar 17, 2025 Petterson Lasse Option Excercise 35562 8.70 $ 309,389.40
Mar 17, 2025 Kornblau Scott Lee Option Excercise 33928 8.70 $ 295,173.60
Mar 17, 2025 Kornblau Scott Lee Grant 66794 $ 0.00
Mar 4, 2025 GUNSTEN CHRISTOPHER Open Market Purchase 3875 7.75 $ 30,031.25
Jan 15, 2025 Shanahan Kathleen M Option Excercise 2849 0.00 $ 0.00
Dec 31, 2024 DICKERSON LAWRENCE R Grant 4069 0.00 $ 0.00
Dec 31, 2024 Shipp Earl L Grant 1771 0.00 $ 0.00
Dec 31, 2024 STEUERT D MICHAEL Grant 1772 0.00 $ 0.00
Nov 14, 2024 DICKERSON LAWRENCE R Open Market Sale 15936 12.04 $ 191,799.32
Nov 12, 2024 DICKERSON LAWRENCE R Open Market Sale 5323 12.61 $ 67,117.71
Nov 11, 2024 Steger Ronald Open Market Sale 12000 12.76 $ 153,120.00