$美国石绵(USG)$ 8-K - Current report Filed: 2018-11-13 AccNo: 0000757011-18-000109 Size: 99 KBItem 3.03: Material Modifications to Rights of Security HoldersItem 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangement 网页链接