Mr. Stewart retired from Devon Energy Corporation in June 2012 after 35 years of service. During a portion of his tenure, he served as Devon's Chief Engineer responsible for the development and integration of company-wide best practices for horizontal drilling, frac design, and well control. During his last five years at Devon, Mr. Stewart served as the Vice President of Well Engineering for the Offshore Division. Beginning in June 2012 following his retirement from Devon, Mr. Stewart served as President and Chief Executive Officer of U.S. Well Services ("USWS"), a provider of fracturing services in the Appalachian Basin (Marcellus and Utica Shales). Mr. Stewart retired from the day to day operations of USWS on December 31, 2015 but remained on USWS's Board of Directors until it was recapitalized in February 2017.
Mr. Stewart received a BS degree in Petroleum Engineering from Louisiana State University and a MS degree in Engineering Management from the University of Southwestern Louisiana (now UL-Lafayette).
Alexander NickolatosDirector, Interim Chief Executive Officer and Chief Financial Officer
Mr. Nickolatos has served as the Company's Chief Financial Officer since December 2013. Prior to EcoStim, Mr. Nickolatos served as the Director of Financial Planning and Analysis at Neos GeoSolutions, a Silicon Valley backed oilfield technology company ("Neos"). During his time at Neos, he also served as Controller and Treasurer, and oversaw oil and gas accounting and finance operations in seven countries, including Argentina.
Prior to joining Neos, he worked for PricewaterhouseCoopers and Arthur Andersen. Mr. Nickolatos is a Certified Public Accountant and holds an accounting degree, summa cum laude, from Walla Walla University.
Mr. Krummel joined our Board in January, 2014. Chris Krummel has served as the Vice President of Finance and Chief Accounting Officer at McDermott International, Inc. since October, 2016. Prior to joining McDermott, Mr. Krummel was a consultant for American Industrial Partners, and served as the Chief Financial Officer of EnTrans International, LLC. Before joining EnTrans, Mr. Krummel was Chief Accounting Officer, Vice President and Corporate Controller, and Vice President of Finance of Cameron International Corporation. He has also served as the Chief Financial Officer of Enventure Global Technology LLC and as Vice President and Financial Controller at Petroleum Geo-Services ASA. Mr. Krummel has also held various finance leadership positions at Keystone International, Inc. and Price Waterhouse LLP. He holds a Bachelor of Science in Business Administration from Creighton University and an MBA in finance and strategic management from The Wharton School at the University of Pennsylvania.
For the past 10 years, Mr. Hageman has been a Managing Director and owner of The Carnrite Group, LLC, a Houston-based business consulting firm. Prior to joining The Carnrite Group, Mr. Hageman served as the senior vice president, chief legal officer and secretary of two publicly traded companies; Physician Corporation of America of Miami, Florida, and Metals USA, Inc. based in Houston, Texas.