SC 13G/A

Amended Statement of Ownership

GEOSPACE TECHNOLOGIES CORP Filed 2018-01-19 Acc 0000215457-18-001441

Documents 1

SC 13G/A Amended Statement of Ownership , us37364x1090_011718.txt

Around this filing

2018-02-13 SC 13G/A Amended Statement of Ownership
2018-01-19 SC 13G/A Amended Statement of Ownership
2017-02-09 SC 13G/A Amended Statement of Ownership

Link to a passage

External

SEC EDGAR (opens in new tab)