Type	Name	Date
Credit agreement	Second Amendment to Credit Agreement, by and among the Company, as borrower, certain subsidiary guarantors party thereto, the Lenders party thereto, KKR Credit Advisors (US) LLC, as arranger, and JPMorgan Chase Bank, N.A., as administrative agent	10/02/2015
Registration rights agreement	Registration Rights Agreement, by and among the Company and the Subscribers listed on the signature pages thereto	04/03/2015
Credit agreement	First Amendment to Credit Agreement, by and among the Company, as Borrower, certain subsidiary Guarantors party thereto, the Lenders party thereto, KKR Credit Advisors (US) LLC, as Arranger, and JPMorgan Chase Bank, N.A., as Administrative Agent	04/03/2015
Credit agreement	2014 Term Credit Agreement	12/19/2014
Credit agreement	Amendment No. 2 to Credit Agreement among Willbros United States Holdings, Inc., as borrower, Crédit Agricole, as Administrative Agent and Lender, and certain lenders party to the Credit Agreement	04/04/2012
Credit agreement	Amendment No. 1 to Credit Agreement, among Willbros United States Holdings, Inc., as borrower, Willbros Group, Inc. and certain of its subsidiaries, as guarantors, and certain lenders party to the Credit Agreement	03/09/2011
Credit agreement	Credit Agreement	07/07/2010

Type	Name	Date
By-Laws	Amended and Restated Bylaws of Willbros Group, Inc	06/06/2018

Type	Name	Date
Employment agreement	Employment Agreement, by and between Willbros United States Holdings, Inc. and Robert R. Harl	09/22/2010