SEC Form 4 · accession 0001209191-17-066227
ION GEOPHYSICAL CORP · IO
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Ken Williamson
Officer — EVP&COO, E&P TECHNO & SERVICES
Period of report
Dec 14, 2017
Accepted (ET)
Dec 18, 2017 · 7:44 pm EST
Rule 10b5-1 plan
unknown — predates the checkbox
Issuer CIK
0000866609
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Dec 14, 2017 | P | 18,176 | $13.05 | A | 47,949 | D |
Table II — derivative securities
No Table II lines on this filing.