SEC Form 4 · accession 0001209191-19-016483
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
Mar 1, 2019
Accepted (ET)
Mar 5, 2019 · 4:24 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 | Mar 1, 2019 | F | 2,296 | $13.16 | D | 164,641 | 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.