Karen A. Twitchell by Edward Cates December 22, 2019 December 22, 2019 705 Karen A. TwitchellFormer Executive Vice President & Chief Financial OfficerLandmark AviationServes on Board of Directors for: Kraton Corporation, Trecora Resources 0 FacebookTwitterPinterestEmail Edward Cates previous post Irma L. Tuder next post Laura S. Unger