$Trinseo(TSE)$ 8-K - Current report Filed: 2019-04-30 AccNo: 0001558370-19-003514 Size: 312 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 Exhibits 网页链接