Great Lakes Dredge Dock CORP is an SEC registrant, filing under CIK 0001372020, classified as heavy construction other than bldg const - contractors. It is grouped with Industrials companies on this site.
Footnote F1 (price, shares): Pursuant to the Merger Agreement (as defined in footnote 2 below), at the Effective Time (as defined in footnote 2 below), these performance-based restricted stock units fully vested, with the number earned or deemed earned as set forth in the Merger Agreement.
Footnote F2 (price, shares): Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated February 10, 2026, by and among Saltchuk Resources, Inc. ("Parent"), Huron MergeCo, Inc. ("Merger Sub"), and Great Lakes Dredge & Dock Corporation ("Issuer") on April 1, 2026 (the "Effective Time")… Full note on SEC EDGAR
Footnote F3 (shares): Includes 71,357 restricted stock units ("RSUs"). At the Effective Time, 52,855 outstanding RSUs were canceled and converted into the right to receive an amount in cash equal to the product of the aggregate number of shares of Common Stock underlying such RSUs immediately prior… Full note on SEC EDGAR
Footnote F1 (price, shares): Pursuant to the Merger Agreement (as defined in footnote 2 below), at the Effective Time (as defined in footnote 2 below), these performance-based restricted stock units fully vested, with the number earned or deemed earned as set forth in the Merger Agreement.
Footnote F2 (price, shares): Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated February 10, 2026, by and among Saltchuk Resources, Inc. ("Parent"), Huron MergeCo, Inc. ("Merger Sub"), and Great Lakes Dredge & Dock Corporation ("Issuer") on April 1, 2026 (the "Effective Time")… Full note on SEC EDGAR
Footnote F3 (shares): Includes 503,878 restricted stock units ("RSUs"). At the Effective Time, 375,541 outstanding RSUs were canceled and converted into the right to receive an amount in cash equal to the product of the aggregate number of shares of Common Stock underlying such RSUs immediately prior… Full note on SEC EDGAR
Footnote F1 (price, shares): Pursuant to the Merger Agreement (as defined in footnote 2 below), at the Effective Time (as defined in footnote 2 below), these performance-based restricted stock units fully vested, with the number earned or deemed earned as set forth in the Merger Agreement.
Footnote F2 (price, shares): Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated February 10, 2026, by and among Saltchuk Resources, Inc. ("Parent"), Huron MergeCo, Inc. ("Merger Sub"), and Great Lakes Dredge & Dock Corporation ("Issuer") on April 1, 2026 (the "Effective Time")… Full note on SEC EDGAR
Footnote F3 (shares): Includes 149,614 restricted stock units ("RSUs"). At the Effective Time, 123,910 outstanding RSUs were canceled and converted into the right to receive an amount in cash equal to the product of the aggregate number of shares of Common Stock underlying such RSUs immediately prior… Full note on SEC EDGAR
Footnote F2 (price): In accordance with the ESPP, these shares were purchased at a price equal to 85% of the closing price of the Issuer's common stock on December 1, 2025.
Footnote F3 (price, shares): Pursuant to the Merger Agreement (as defined in footnote 2 below), at the Effective Time (as defined in footnote 2 below), these performance-based restricted stock units fully vested, with the number earned or deemed earned as set forth in the Merger Agreement.
Footnote F4 (price, shares): Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated February 10, 2026, by and among Saltchuk Resources, Inc. ("Parent"), Huron MergeCo, Inc. ("Merger Sub"), and Great Lakes Dredge & Dock Corporation ("Issuer") on April 1, 2026 (the "Effective Time")… Full note on SEC EDGAR
Footnote F5 (shares): Includes 103,250 restricted stock units ("RSUs"). At the Effective Time, 89,375 outstanding RSUs were canceled and converted into the right to receive an amount in cash equal to the product of the aggregate number of shares of Common Stock underlying such RSUs immediately prior… Full note on SEC EDGAR
Footnote F1 (price, shares): Pursuant to the Merger Agreement (as defined in footnote 2 below), at the Effective Time (as defined in footnote 2 below), these performance-based restricted stock units fully vested, with the number earned or deemed earned as set forth in the Merger Agreement.
Footnote F2 (price, shares): Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated February 10, 2026, by and among Saltchuk Resources, Inc. ("Parent"), Huron MergeCo, Inc. ("Merger Sub"), and Great Lakes Dredge & Dock Corporation ("Issuer") on April 1, 2026 (the "Effective Time")… Full note on SEC EDGAR
Footnote F3 (shares): Includes 33,233 restricted stock units ("RSUs"). At the Effective Time, 24,785 outstanding RSUs were canceled and converted into the right to receive an amount in cash equal to the product of the aggregate number of shares of Common Stock underlying such RSUs immediately prior… Full note on SEC EDGAR
Footnote F1 (price, shares): Pursuant to the Merger Agreement (as defined in footnote 2 below), at the Effective Time (as defined in footnote 2 below), these performance-based restricted stock units fully vested, with the number earned or deemed earned as set forth in the Merger Agreement.
Footnote F2 (price, shares): Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated February 10, 2026, by and among Saltchuk Resources, Inc. ("Parent"), Huron MergeCo, Inc. ("Merger Sub"), and Great Lakes Dredge & Dock Corporation ("Issuer") on April 1, 2026 (the "Effective Time")… Full note on SEC EDGAR
Footnote F3 (shares): Includes 103,250 restricted stock units ("RSUs"). At the Effective Time, 89,735 outstanding RSUs were canceled and converted into the right to receive an amount in cash equal to the product of the aggregate number of shares of Common Stock underlying such RSUs immediately prior… Full note on SEC EDGAR
Footnote F1 (price, shares): Pursuant to the Merger Agreement (as defined in footnote 2 below), at the Effective Time (as defined in footnote 2 below), these performance-based restricted stock units fully vested, with the number earned or deemed earned as set forth in the Merger Agreement.
Footnote F2 (price, shares): Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated February 10, 2026, by and among Saltchuk Resources, Inc. ("Parent"), Huron MergeCo, Inc. ("Merger Sub"), and Great Lakes Dredge & Dock Corporation ("Issuer") on April 1, 2026 (the "Effective Time")… Full note on SEC EDGAR
Footnote F3 (shares): Includes 77,128 restricted stock units ("RSUs"). At the Effective Time, 61,359 outstanding RSUs were canceled and converted into the right to receive an amount in cash equal to the product of the aggregate number of shares of Common Stock underlying such RSUs immediately prior… Full note on SEC EDGAR
Footnote F1 (price, shares): Pursuant to the Merger Agreement (as defined in footnote 2 below), at the Effective Time (as defined in footnote 2 below), these performance-based restricted stock units fully vested, with the number earned or deemed earned as set forth in the Merger Agreement.
Footnote F2 (price, shares): Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated February 10, 2026, by and among Saltchuk Resources, Inc. ("Parent"), Huron MergeCo, Inc. ("Merger Sub"), and Great Lakes Dredge & Dock Corporation ("Issuer") on April 1, 2026 (the "Effective Time")… Full note on SEC EDGAR
Footnote F3 (shares): Includes 27,822 restricted stock units ("RSUs"). At the Effective Time, 20,899 outstanding RSUs were canceled and converted into the right to receive an amount in cash equal to the product of the aggregate number of shares of Common Stock underlying such RSUs immediately prior… Full note on SEC EDGAR
Footnote F1 (price): Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated February 10, 2026, by and among Saltchuk Resources, Inc. ("Parent"), Huron MergeCo, Inc. ("Merger Sub"), and Great Lakes Dredge & Dock Corporation ("Issuer") on April 1, 2026 (the "Effective Time")… Full note on SEC EDGAR
Footnote F3 (price): Includes 45,068 DSUs. At the Effective Time, each outstanding award of DSUs was canceled and converted into the right to receive an amount in cash equal to the product of the aggregate number of shares of Common Stock underlying such DSU immediately prior to the Effective Time… Full note on SEC EDGAR
Footnote F1 (price): Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated February 10, 2026, by and among Saltchuk Resources, Inc. ("Parent"), Huron MergeCo, Inc. ("Merger Sub"), and Great Lakes Dredge & Dock Corporation ("Issuer") on April 1, 2026 (the "Effective Time")… Full note on SEC EDGAR
Footnote F1 (price): Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated February 10, 2026, by and among Saltchuk Resources, Inc. ("Parent"), Huron MergeCo, Inc. ("Merger Sub"), and Great Lakes Dredge & Dock Corporation ("Issuer") on April 1, 2026 (the "Effective Time")… Full note on SEC EDGAR
Footnote F3 (price): Includes 10,336 DSUs. At the Effective Time, each outstanding award of DSUs was canceled and converted into the right to receive an amount in cash equal to the product of the aggregate number of shares of Common Stock underlying such DSU immediately prior to the Effective Time… Full note on SEC EDGAR
Footnote F1 (price): Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated February 10, 2026, by and among Saltchuk Resources, Inc. ("Parent"), Huron MergeCo, Inc. ("Merger Sub"), and Great Lakes Dredge & Dock Corporation ("Issuer") on April 1, 2026 (the "Effective Time")… Full note on SEC EDGAR
Footnote F3 (price): Includes 76,962 DSUs. At the Effective Time, each outstanding award of DSUs was canceled and converted into the right to receive an amount in cash equal to the product of the aggregate number of shares of Common Stock underlying such DSU immediately prior to the Effective Time… Full note on SEC EDGAR
Footnote F1 (price): Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated February 10, 2026, by and among Saltchuk Resources, Inc. ("Parent"), Huron MergeCo, Inc. ("Merger Sub"), and Great Lakes Dredge & Dock Corporation ("Issuer") on April 1, 2026 (the "Effective Time")… Full note on SEC EDGAR
Footnote F1 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Ms. Schiffer's performance-based restricted stock units granted on March 15, 2023.
Footnote F2 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Ms. Schiffer's performance-based restricted stock units granted on March 15, 2024.
Footnote F1 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Mr. Petterson's performance-based restricted stock units granted on March 15, 2023.
Footnote F2 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Mr. Petterson's performance-based restricted stock units granted on March 15, 2024.
Footnote F1 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Mr. Kornblau's performance-based restricted stock units granted on March 15, 2023.
Footnote F2 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Mr. Kornblau's performance-based restricted stock units granted on March 15, 2024.
Footnote F1 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Mr. Johanson's performance-based restricted stock units granted on March 15, 2023.
Footnote F2 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Mr. Johanson's performance-based restricted stock units granted on March 15, 2024.
Footnote F1 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Mr. Hanson's performance-based restricted stock units granted on March 15, 2023.
Footnote F2 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Mr. Hanson's performance-based restricted stock units granted on March 15, 2024.
Footnote F1 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Mr. Gunsten's performance-based restricted stock units granted on March 15, 2023.
Footnote F2 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Mr. Gunsten's performance-based restricted stock units granted on March 15, 2024.
Footnote F1 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Ms. Beyko's performance-based restricted stock units granted on March 15, 2023.
Footnote F2 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Ms. Beyko's performance-based restricted stock units granted on March 15, 2024.
Footnote F1 (price): Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Mr. Bayer's performance-based restricted stock units granted on March 15, 2024.
Great Lakes Dredge Dock CORP (GLDD) has filed no insider reports in the last 90 days. The most recent on record is dated 2026-04-01. The full record for GLDD runs to 68 Form 4 filings, the earliest from 2024-10-02. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying GLDD stock?
No insider purchases of GLDD were filed in the last 90 days.
How many insiders are selling GLDD stock?
No insider sales of GLDD were filed in the last 90 days. 7 sales are on record for this company.
Where can I see GLDD SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects GLDD Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
Scott Lee Kornblau - Officer
Eleni Beyko - Officer
Earl L. Shipp
