Teno previously served as a director of Eco-Stim Energy Solutions from March 2017 to December 2018. Mr. Teno received an undergraduate business degree from the Wharton School at the University of Pennsylvania in 2007. About Southwest Gas Holdings, Inc. Southwest Gas Holdings, Inc., through its subsidiaries, engages in the business of purchasing, distributing and transporting natural gas, and providing comprehensive utility infrastructure services across North America. Southwest Gas Corporation, a wholly owned subsidiary, safely and reliably delivers natural gas to over two million customers in Arizona, California and Nevada.