Mathew Martoma, a former portfolio manager for Steven Cohen’s SAC Capital, is asking the U.S. Court of Appeals for the Second Circuit for a rehearing en banc of his 2014 insider trading conviction at the hands of the U.S. Attorney’s Office for the Southern District of New York.

The petition comes after a split appellate panel that included Chief Judge Robert Katzmann issued an affirmative amended order that the minority opinion said still fundamentally muddied the already complicated circuit law on the securities violation.