SC 13G/A | SEC Filings Hub

Filing metadata

Accession number: 0000072971-14-000185
Form type: SC 13G
Filer: ION GEOPHYSICAL CORP
CIK: CIK 866609
Filed: Jan 28, 2014
Reporting period: Dec 31, 2013
Description: Passive 5%+ stake

Documents

0000072971-14-000185-index.htm

Complete submission

0000072971-14-000185.txt

directory listing

Filed by

ION GEOPHYSICAL CORP