<SEC-DOCUMENT>0001193125-15-134770-index.html : 20150417 <SEC-HEADER>0001193125-15-134770.hdr.sgml : 20150417 <ACCEPTANCE-DATETIME>20150417110659 ACCESSION NUMBER: 0001193125-15-134770 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 4 CONFORMED PERIOD OF REPORT: 20150416 ITEM INFORMATION: Entry into a Material Definitive Agreement ITEM INFORMATION: Material Modifications to Rights of Security Holders ITEM INFORMATION: Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year ITEM INFORMATION: Financial Statements and Exhibits FILED AS OF DATE: 20150417 DATE AS OF CHANGE: 20150417 FILER: COMPANY DATA: COMPANY CONFORMED NAME: GEOSPACE TECHNOLOGIES CORP CENTRAL INDEX KEY: 0001001115 STANDARD INDUSTRIAL CLASSIFICATION: MEASURING & CONTROLLING DEVICES, NEC [3829] IRS NUMBER: 760447780 STATE OF INCORPORATION: TX FISCAL YEAR END: 0930 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 001-13601 FILM NUMBER: 15776895 BUSINESS ADDRESS: STREET 1: 7007 PINEMONT DR. CITY: HOUSTON STATE: TX ZIP: 77040 BUSINESS PHONE: 7139864444 MAIL ADDRESS: STREET 1: 7007 PINEMONT DR. CITY: HOUSTON STATE: TX ZIP: 77040 FORMER COMPANY: FORMER CONFORMED NAME: OYO GEOSPACE CORP DATE OF NAME CHANGE: 19950919 </SEC-HEADER> <DOCUMENT> <TYPE>8-K <SEQUENCE>1 <FILENAME>d908545d8k.htm <DESCRIPTION>8-K <TEXT> Document 1 - file: d908545d8k.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-2.1 <SEQUENCE>2 <FILENAME>d908545dex21.htm <DESCRIPTION>EX-2.1 <TEXT> Document 2 - file: d908545dex21.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-3.1 <SEQUENCE>3 <FILENAME>d908545dex31.htm <DESCRIPTION>EX-3.1 <TEXT> Document 3 - file: d908545dex31.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-3.2 <SEQUENCE>4 <FILENAME>d908545dex32.htm <DESCRIPTION>EX-3.2 <TEXT> Document 4 - file: d908545dex32.htm
</DOCUMENT> </SEC-DOCUMENT>