Ken Williamson

All filings by Ken Williamson on record concern ION Geophysical Corp, in the capacity of chief executive. Between 1 March 2016 and 11 May 2022, the trades on record add up to 16 filings.

Purchases make up the whole of the open-market record (2 purchases, €501k). Unlike grants, an open-market purchase is paid for by the insider, at the market price. Outside the open market, there are 11 share grants and 1 option exercise.

The record was last updated on 13 May 2022 with a share grant (€2,334) in ION Geophysical Corp. The last insider purchase was made public on 19 December 2017, 3,230 days ago. Typically, a trade is published a median of 2 days after it takes place. The legal deadline for a Form 4 is two business days after the transaction. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.