SC 13G/A | SEC Filings Hub

Filing metadata

Accession number: 0001193125-13-006797
Form type: SC 13G
Filer: ION GEOPHYSICAL CORP
CIK: CIK 866609
Filed: Jan 08, 2013
Reporting period: —
Description: Passive 5%+ stake

Documents

0001193125-13-006797-index.htm

Complete submission

0001193125-13-006797.txt

directory listing

Filed by

ION GEOPHYSICAL CORP