$Ultra Petroleum(UPL)$ 8-K - Current report Filed: 2016-03-02 AccNo: 0001144204-16-085548 Size: 196 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 7.01: Regulatio 网页链接