Security Snapshot

Great Lakes Dredge & Dock CORP - Common Stock (GLDD) Institutional Ownership

CUSIP: 390607109

13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026

Latest Period

Q4 2025

Institutions Reporting

221

Shares (Excl. Options)

55,969,807

Price

$13.12

Type / Class
Equity / Common Stock
Symbol
GLDD on Nasdaq
Shares outstanding
67,018,110
Price per share
$17.00
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
55,969,807
Total reported value
$734,799,553
% of total 13F portfolios
0%
Share change
+832,672
Value change
+$12,325,912
Number of holders
221
Price from insider filings
$17.00
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

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Quick Takeaways

  • GLDD - Great Lakes Dredge & Dock CORP - Common Stock is tracked under CUSIP 390607109.
  • 221 institutions reported positions in Q4 2025.
  • 4 significant owners is listed from Schedule 13D/13G reporting.

What Changed

  • Holder count moved from 221 to 2 between Q4 2025 and Q1 2026.
  • Reported value moved from $734,799,553 to $80,563.

Why This Matters

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Official SEC Source

Backed by Form 13F

Ownership context comes from SEC Form 13F and, when available, Schedule 13D/13G filings.

See Original Filing

Investment Quick Answers

What is CUSIP 390607109?
CUSIP 390607109 identifies GLDD - Great Lakes Dredge & Dock CORP - Common Stock in SEC 13F datasets.

Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.

Significant Owners of Great Lakes Dredge & Dock CORP - Common Stock (GLDD) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BlackRock, Inc. 10% +0.5% $99,186,803 -$95,297 6,701,811 -0.1% BlackRock, Inc. 28 Feb 2026
PRUDENTIAL FINANCIAL INC 6.3% -20% $51,484,209 -$12,403,319 4,293,929 -19% PRUDENTIAL FINANCIAL INC 30 Sep 2025
JENNISON ASSOCIATES LLC 6.3% -20% $51,248,473 -$12,429,146 4,274,268 -20% Jennison Associates LLC 30 Sep 2025
ALLIANCEBERNSTEIN L.P. 4.3% -25% $26,253,687 -$9,369,141 2,866,123 -26% AllianceBernstein L.P. 31 Dec 2024

As of 31 Dec 2025, 221 institutional investors reported holding 55,969,807 shares of Great Lakes Dredge & Dock CORP - Common Stock (GLDD). This represents 84% of the company’s total 67,018,110 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Great Lakes Dredge & Dock CORP - Common Stock (GLDD) together control 63% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 10% 6,897,215 -0.58% 0% $90,491,461
DIMENSIONAL FUND ADVISORS LP 6.4% 4,300,112 -0.54% 0.01% $56,417,781
VANGUARD GROUP INC 5.9% 3,987,334 +2.8% 0% $52,313,822
JENNISON ASSOCIATES LLC 5.7% 3,806,504 -11% 0.03% $49,941,331
Harvey Partners, LLC 5.5% 3,703,215 +0.07% 4.4% $48,586,181
AMERICAN CENTURY COMPANIES INC 3.9% 2,584,604 +7.1% 0.02% $33,910,004
TCW GROUP INC 2.8% 1,874,234 0% 0.18% $24,589,950
GEODE CAPITAL MANAGEMENT, LLC 2.4% 1,630,411 -0.25% 0% $21,394,690
MILLENNIUM MANAGEMENT LLC 2.4% 1,597,481 +39% 0.02% $20,958,951
STATE STREET CORP 2.4% 1,589,380 -1.7% 0% $20,852,666
Minerva Advisors LLC 2.1% 1,389,807 0% 12% $18,234,267
MORGAN STANLEY 1.5% 1,019,618 +28% 0% $13,377,389
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 1.2% 796,209 -0.92% 0.01% $10,446,262
JPMORGAN CHASE & CO 1% 668,280 -25% 0% $8,767,834
NORTHERN TRUST CORP 0.95% 636,980 -8.4% 0% $8,357,178
GOLDMAN SACHS GROUP INC 0.95% 634,720 +121% 0% $8,327,526
Qube Research & Technologies Ltd 0.94% 630,098 +65% 0.01% $8,266,886
BNP PARIBAS FINANCIAL MARKETS 0.88% 589,172 0% 0% $7,729,937
LONDON CO OF VIRGINIA 0.87% 584,424 0% 0.04% $7,667,643
Prescott Group Capital Management, L.L.C. 0.86% 576,870 0% 0.7% $7,568,534
TWO SIGMA INVESTMENTS, LP 0.85% 570,682 +36% 0.01% $7,487,348
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.83% 554,348 -1.3% 0% $7,273,046
BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.76% 508,266 +15% 0.14% $6,668,450
Connor, Clark & Lunn Investment Management Ltd. 0.68% 453,539 +8.9% 0.02% $5,950,432
Allspring Global Investments Holdings, LLC 0.64% 430,762 -13% 0.01% $5,711,904

Institutional Holders of Great Lakes Dredge & Dock CORP - Common Stock (GLDD) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q1 4,739 $80,563 +$11,101 $17.00 2
2025 Q4 55,969,807 $734,799,553 +$12,325,912 $13.12 221
2025 Q3 54,867,176 $657,811,593 +$92,425 $11.99 211
2025 Q2 54,577,452 $665,209,845 -$6,488,667 $12.19 188
2025 Q1 55,352,230 $481,638,963 +$1,594,398 $8.70 188
2024 Q4 55,648,749 $628,220,932 +$4,908,777 $11.29 190
2024 Q3 54,708,548 $576,207,284 +$6,824,359 $10.53 179
2024 Q2 54,196,204 $475,459,698 +$7,255,252 $8.78 168
2024 Q1 53,411,514 $467,342,102 -$18,608,390 $8.75 155
2023 Q4 55,563,972 $426,728,886 +$2,857,537 $7.68 141
2023 Q3 55,821,683 $444,809,416 -$2,038,683 $7.97 146
2023 Q2 54,625,138 $445,716,562 -$6,670,318 $8.16 131
2023 Q1 55,911,308 $303,541,924 -$6,206,652 $5.43 138
2022 Q4 57,617,400 $342,817,395 -$8,113,503 $5.95 143
2022 Q3 58,419,876 $442,881,389 +$5,783,208 $7.58 133
2022 Q2 56,736,367 $743,854,024 -$6,654,705 $13.11 129
2022 Q1 57,219,956 $802,966,432 -$7,544,605 $14.03 135
2021 Q4 57,600,857 $905,489,476 -$15,113,519 $15.72 127
2021 Q3 57,917,217 $873,966,202 +$59,386,326 $15.09 122
2021 Q2 57,194,029 $835,581,752 +$23,961,306 $14.61 131
2021 Q1 55,578,762 $810,681,893 +$10,042,797 $14.58 141
2020 Q4 55,334,010 $728,871,426 +$14,392,117 $13.17 140
2020 Q3 54,430,102 $517,728,625 -$15,655,132 $9.51 148
2020 Q2 56,085,851 $519,140,597 -$6,496,675 $9.26 149
2020 Q1 57,051,624 $473,387,962 +$614,979 $8.30 154
2019 Q4 56,700,584 $642,434,486 +$12,541,518 $11.33 162
2019 Q3 55,963,970 $584,812,650 +$14,041,263 $10.45 168
2019 Q2 54,509,692 $601,402,366 +$33,346,963 $11.04 164
2019 Q1 51,841,990 $461,892,300 +$32,260,126 $8.91 146
2018 Q4 48,470,603 $320,886,768 +$2,924,041 $6.62 122
2018 Q3 47,582,318 $294,922,390 +$4,249,212 $6.20 94
2018 Q2 44,747,532 $234,915,740 -$8,276,466 $5.25 95
2018 Q1 48,559,259 $223,314,104 +$6,170,833 $4.60 93
2017 Q4 46,993,765 $253,769,146 +$16,059,374 $5.40 98
2017 Q3 44,343,916 $215,122,339 +$3,359,473 $4.85 96
2017 Q2 44,053,725 $189,376,558 +$2,126,040 $4.30 93
2017 Q1 43,571,555 $174,321,292 +$12,079,193 $4.00 90
2016 Q4 44,343,496 $186,346,386 -$14,091,217 $4.20 99
2016 Q3 47,378,954 $165,803,544 -$7,192,756 $3.50 85
2016 Q2 49,026,814 $213,757,338 -$1,477,186 $4.36 90
2016 Q1 49,417,026 $220,546,061 -$6,725,401 $4.46 91
2015 Q4 50,947,756 $201,803,782 -$2,758,611 $3.96 96
2015 Q3 50,797,223 $256,026,194 -$6,179,998 $5.04 92
2015 Q2 51,808,490 $308,782,909 -$1,669,109 $5.96 91
2015 Q1 51,682,746 $310,606,558 +$616,681 $6.01 104
2014 Q4 52,901,241 $452,622,950 +$24,245,470 $8.56 108
2014 Q3 50,510,234 $312,158,769 -$2,690,286 $6.18 116
2014 Q2 50,352,829 $402,205,633 -$27,874,251 $7.99 109
2014 Q1 51,732,111 $472,233,706 -$16,024,738 $9.13 110

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