$塞纳(CERN)$ 8-K/A [Amend] - Current report Filed: 2017-08-17 AccNo: 0000804753-17-000033 Size: 161 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 Exhib 网页链接