$Geospace技术(GEOS)$ 8-K - Current report Filed: 2019-02-08 AccNo: 0001193125-19-032376 Size: 1 MBItem 5.05: Amendments to the Registrant's Code of Ethics, or Waiver of a Provision of the Code of EthicsItem 5.07: Submission of Matters to a Vote of Security HoldersItem 9.01: Financial Statements and Exhibits 网页链接