Robert Kostelnik

Mr. Kostelnik has been a principal in GlenRock Recovery Partners, LLC since February 2012. GlenRock Recovery Partners facilitates the sale of non-fungible hydrocarbons in the United States. Prior to this, he was President & Chief Executive Officer of Cinatra Clean Technologies, Inc. from 2008 to May 2011. Mr. Kostelnik held the position of Vice President of Refining for CITGO Petroleum Corporation ("CITGO") from July 2006 until his retirement in 2007. He held a number of senior positions during his 16 years with CITGO.

Mr. Kostelnik holds a Bachelor of Science (Mechanical Engineering) from the University of Missouri and is a Registered Professional Engineer. Mr. Kostelnik also serves as a director of HF Sinclair Corporation.