Type	Name	Date
Indenture	Indenture, among Great Lakes Dredge & Dock Corporation, as Issuer, the guarantors party thereto, and Wells Fargo Bank, National Association, as Trustee, relating to the 2029 Notes	05/25/2021
Indenture	Indenture, by and among the Company, certain subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee	05/24/2017
Registration rights agreement	Registration Rights Agreement, by and among the Company, certain subsidiary guarantors named therein and Deutsche Bank Securities Inc., as representative of the initial purchasers named therein	05/24/2017
Credit agreement	Second Amendment to Amended and Restated Credit Agreement, by and among the Company, the subsidiaries of the Company named therein, and PNC Bank, N.A. as lender and agent, and certain other lenders named therein	05/24/2017
Credit agreement	Credit Agreement by and among Great Lakes Dredge & Dock Corporation, as Borrower, the other Credit Parties party thereto, the financial institutions from time to time party thereto as lenders, Wells Fargo Bank, National Association, as Administrative Agent, Swingline Lender and an Issuing Lender, Bank of America, N.A., as Syndication Agent and PNC Bank, National Association, BMO Harris Bank N.A. and Fifth Third Bank, as Co-Documentation Agents	06/07/2012
Credit agreement	Amendment No. 4 to Credit Agreement among Great Lakes Dredge & Dock Corporation, the other Loan Parties from time to time party to the Credit Agreement, the Lenders signatory thereto and Bank of America, N.A. (successor by merger to LaSalle Bank National Association) as Swing Line Lender, Issuing Lender and Administrative Agent	09/13/2011
Indenture	Supplemental Indenture, among NASDI, LLC, Great Lakes Dredge & Dock Corporation, certain subsidiary guarantors named therein and Wells Fargo Bank, National Association	05/09/2011
Indenture	Indenture, by and among the Company, certain subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee	01/28/2011
Registration rights agreement	Registration Rights Agreement, by and among the Company, certain subsidiary guarantors named therein and the initial purchasers named therein	01/28/2011

Type	Name	Date
Employment agreement	Employment Agreement between Great Lakes Dredge & Dock Corporation and Scott L. Kornblau	10/04/2021
Equity incentive plans	Great Lakes Dredge & Dock Corporation 2017 Long-Term Incentive Plan	05/17/2017
Employment agreement	Employment Agreement between Great Lakes Dredge & Dock Company, LLC and Kyle D. Johnson	05/02/2012
Employment agreement	Employment Agreement between Great Lakes Dredge & Dock Company, LLC and John F. Karas	05/02/2012
Employment agreement	Employment Agreement between Great Lakes Dredge & Dock Company, LLC and David E. Simonelli	04/13/2012
Employment agreement	Employment Agreement with Jonathan W. Berger	09/08/2010
Employment agreement	Employment Agreement with Bruce J. Biemeck	09/08/2010