SC 13G/A | SEC Filings Hub

Filing metadata

Accession number: 0000914208-13-000534
Form type: SC 13G
Filer: ION GEOPHYSICAL CORP
CIK: CIK 866609
Filed: Dec 09, 2013
Reporting period: Nov 30, 2013
Description: Passive 5%+ stake

Documents

0000914208-13-000534-index.htm

Complete submission

0000914208-13-000534.txt

directory listing

Filed by

ION GEOPHYSICAL CORP