4 | SEC Filings Hub

Filing metadata

Accession number: 0001209191-21-032349
Form type: Form 4
Filer: ION GEOPHYSICAL CORP
CIK: CIK 866609
Filed: May 13, 2021
Reporting period: May 11, 2020
Description: Insider transaction

Documents

0001209191-21-032349-index.htm

Complete submission

0001209191-21-032349.txt

directory listing

Filed by

ION GEOPHYSICAL CORP