Groupon product chief Jeffrey Holden is leaving the daily deals site effective March 18, according to a SEC filing posted today. No reasons were given on why the former Amazon exec is stepping down from the role. Crain’s reports that Holden is leaving for an undisclosed company, one of which is not directly competitive with Groupon. Holden joined Groupon after his Seattle startup company, Pelago, was acquired in 2011.