SEC Form 4 · accession 0001209191-16-152880
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 1, 2016
Accepted (ET)
Dec 2, 2016 · 1:40 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 StockF1 | Dec 1, 2016 | F | 122 | $7.40 | D | 29,773 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1These shares were withheld upon the vesting of restricted stock shares to pay tax withholding obligations.