Scott Schwausch, VP & Corporate Controller at ION GEOPHYSICAL CORP (IO), bought 1,212 shares at $13.05 ($16K) on 2017-12-14, disclosed to the SEC on 2017-12-18.
Seasonal purchase ($16k) by VP & Corporate Controller — this insider has traded IO in December in at least three consecutive prior years. Pattern-driven, low signal.
Something here stands out, but not much.