• Matthew D. Spicer

    Senior Vice President and General Manager

    Mr. Spicer serves as Senior Vice President and General Manager and has primary responsibility for the day-to-day management and operations of San Mateo Midstream. He also serves as Senior Vice President and General Manager of Midstream for Matador Resources Company. Mr. Spicer joined Matador Resources Company in March 2014 as Senior Representative of Business Development and was promoted to Manager of Business Development and then General Manager of Midstream later in 2014. In October 2015, Mr. Spicer was promoted to Vice President and General Manager of Midstream. More recently, in August 2018, Mr. Spicer was promoted to Senior Vice President and General Manager of Midstream.

    Prior to joining Matador Resources Company, Mr. Spicer served as the Director of Flight Operations for L-3 Unmanned Systems, also serving in various roles including as Program Manager and in Business Development during his tenure with L-3, which began in 2011. Mr. Spicer served in the United States Marine Corps from 1991 to 2014, both in active duty and as a reservist, before his retirement as a Lieutenant Colonel in 2014. He also served as a first officer with American Airlines from 2000 to 2003 following his active duty in the United States Marine Corps. Mr. Spicer received a Bachelor of Science degree in Manufacturing Engineering Technology from Central Michigan University in 1991.

  • Brian J. Willey

    Senior Vice President and General Counsel

    Mr. Willey serves as Senior Vice President and General Counsel of San Mateo Midstream. Mr. Willey also serves as Senior Vice President and Co-General Counsel of Matador Resources Company. Mr. Willey joined Matador Resources Company in February 2014 as its Deputy General Counsel and was promoted to Co-General Counsel in January 2016. In August 2016, Mr. Willey was promoted to Vice President and Co-General Counsel. Two years later in August 2018, Mr. Willey was named Senior Vice President and General Counsel.

    Prior to joining Matador Resources Company, Mr. Willey was an attorney with Dean Foods Company where he most recently served as Vice President, Chief Counsel – Corporate. Before Dean Foods, Mr. Willey served as a senior associate in the Dallas office of Baker Botts L.L.P. Mr. Willey received a Bachelor of Science degree in Accounting in 2002 from Brigham Young University. He received his law degree in 2005 from The University of Texas School of Law, where he graduated with High Honors and was a member of the Order of the Coif in addition to being named a Chancellor and an Associate Editor on the University of Texas Law Review. Mr. Willey also served a church mission in the Philippines from 1995 to 1997.

  • W. Corey Lothamer

    Vice President, Business Development

    Mr. Lothamer is the Vice President of Business Development for San Mateo Midstream and has primary responsibility for the commercial activities in and around the San Mateo crude, water, and gas gathering and processing assets. Mr. Lothamer joined Matador Resources Company in 2018.

    Prior to joining Matador Resources Company, Mr. Lothamer worked for Southcross Energy, LLC for 8 years having spent the majority of the his tenure serving as the Vice President of Gas Supply, Marketing, and Business Development. Mr. Lothamer began his career in the oil and gas industry in 2006 with Crosstex Energy working multiple engineering and commercial roles within in their gas treating and gas supply divisions. Upon completion of undergraduate work, Mr. Lothamer started working as a project engineer for Lockheed Martin Aeronautics Company and Raytheon Company. He earned a Bachelor of Science degree in Industrial Engineering from the University of Florida and a Master of Science in Engineering Management from Southern Methodist University.

  • Michael D. Frenzel

    Vice President and Treasurer

    Mr. Frenzel serves as Vice President and Treasurer of San Mateo Midstream. Mr. Frenzel also serves as Vice President and Treasurer of Matador Resources Company. Mr. Frenzel originally worked for Matador Resources Company from 2006 to 2010 as a Senior Financial Analyst before leaving to obtain his M.B.A. from Duke University’s Fuqua School of Business. Mr. Frenzel rejoined Matador Resources Company in 2013 as its Senior Strategy and Financial Analyst and Assistant Treasurer and was promoted to Finance Director and Assistant Treasurer in January 2017. Just over a year later in August 2018, Mr. Frenzel was promoted to Vice President and Treasurer.

    Before joining Matador Resources Company in 2013, Mr. Frenzel worked as an Investment Associate for Hamm Capital, LLC and as a Financial Analyst and Assistant to the CEO at Continental Resources. Mr. Frenzel also previously worked as a Business Analyst for Deloitte Consulting LLP. Mr. Frenzel graduated summa cum laude from Vanderbilt University in 2004, receiving a Bachelor of Arts degree in Economics and Mathematics, and earned the designation of Fuqua Scholar while receiving a Master of Business Administration degree from Duke University’s Fuqua School of Business in 2012.

  • James D. Meier

    Vice President, Operations

    Mr. Meier serves as Vice President of Operations for San Mateo Midstream and has primary responsibility for the daily operations and field construction of San Mateo’s crude, water, and gas gathering assets. Mr. Meier joined Matador Resources Company in August 2019.

    Prior to joining Matador Resources Company, Mr. Meier worked 17 years for Pioneer Natural Resources most recently as Vice President of Permian Gas & Power Infrastructure. In that role, he was responsible for managing Pioneer’s ownership interest in two non-operated gas gathering & processing systems as well as the construction and operation of Pioneer’s power distribution network. He was previously Vice President of Corporate Facilities where he led Pioneer’s Facilities and Gas Processing engineering teams during the initial growth phases of Pioneer’s Eagle Ford shale development, Permian horizontal Wolfcamp development, and the conceptual design phase of what would later become Pioneer Water Management. Mr. Meier also managed the Fain and Satanta Gas Plants before being divested by Pioneer and was part of the Investor Relations team at the time Pioneer’s upstream MLP, Pioneer Southwest Energy Partners, was being created. Prior to working for Pioneer Natural Resources, Mr. Meier also was a facility engineer for Grimm Engineering, Inc. and ARCO Technical & Operations Services upon graduation. He earned a Bachelor of Science degree in Chemical Engineering from Texas A&M University.