SC 13G | SEC Filings Hub

Filing metadata

Accession number: 0000914208-13-000265
Form type: SC 13G
Filer: ION GEOPHYSICAL CORP
CIK: CIK 866609
Filed: Feb 13, 2013
Reporting period: Dec 31, 2012
Description: Passive 5%+ stake

Documents

0000914208-13-000265-index.htm

Complete submission

0000914208-13-000265.txt

directory listing

Filed by

ION GEOPHYSICAL CORP