$Willbros Group, Inc. (DE)(WG)$ 8-K - Current report Filed: 2018-03-28 AccNo: 0001193125-18-099708 Size: 627 KBItem 1.01: Entry into a Material Definitive AgreementItem 2.03: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a RegistrantItem 3.01: Notice of 网页链接