$美国石绵(USG)$ 8-K - Current report Filed: 2018-07-20 AccNo: 0000757011-18-000060 Size: 42 KBItem 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain OfficersItem 8.01: Other Events 网页链接