Groupon tanks as lockup for insiders ends Groupon’s first six months on the stock market have been nightmarish — and the drama continued Friday, the first day that some company insiders were allowed to dump their shares. Share on FacebookPost on XFollow us By Stingray Branding|2012-06-01T16:31:28-04:00June 1st, 2012|Job openings|Comments Off on Groupon tanks as lockup for insiders ends Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail