$Patterson-UTI Energy, Inc.(PTEN)$ 8-K - Current report Filed: 2018-04-03 AccNo: 0001564590-18-007550 Size: 41 KBItem 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain OfficersItem 9.01: Financial Statements and Exhibi 网页链接