Management Team

Director of HR

Ms. Siemens joined Hathaway LLC in 2007 and currently holds the position of Director of Human Resources & Administration. She is responsible for management of employee benefit programs, personnel policies and procedures, and administrative services. She previously served as the business manager of Payzone Directional Services, Inc., a related oilfield services company specializing in directional drilling. While at Payzone, she helped to establish and manage three locations including the headquarters in Bakersfield, CA and operations in Utah and Colorado. Shelley has a Certificate of HR Management from California State University, Bakersfield.


Mr. Knight joined Hathaway LLC as the company’s Controller in May of 2017. Previously, Knight was an Operations Specialist for Chevron’s Supply and Trading division on the West Coast. In this role, he was responsible for blending and shipping products between various refineries, as well as bunkering marine vessels. Additionally, Mr. Knight has held roles as Decision Analyst Advisor for Chevron’s SJVBU, Project Controls Analyst for Occidental Petroleum, and various positions in banking. Mr. Knight earned a Bachelor’s degree in Financial Economics from California State University, Bakersfield in 2011 and a Master’s in Finance and Economics from Durham University, England in 2015.


Mr. McLoughlin joined Hathaway LLC in January of 2017. He previously worked for Bonanza Creek Energy, Inc. and as a contract Landman in the Rocky Mountain region. Mr. McLoughlin has a Bachelor of Business Administration in Land/Energy Management from Colorado Mesa University, where he attended on a baseball Scholarship.

Accounts Payable Specialist

Ms. Philley joined the Hathaway team in November of 2018. She previously worked at C&J Energy Services for three years and Advanced Industrial Services for four years. Ms. Philley obtained an Associate of Science degree in Court Reporting and an Associate of Science in Liberal Arts for Business & Technology at Taft College.

Senior Tax Accountant

Mr. Gilligan joined Hathaway in 2016, bringing with him over 15 years of experience in financial reporting and tax compliance services. He is a Certified Public Accountant and holds a Bachelor of Science Degree in Business Administration with a double major in accounting and finance, graduating magna cum laude from California State University, Bakersfield. Previously, Mr. Gilligan held a management position at Brown Armstrong, overseeing numerous oil related businesses both domestic and abroad. Matthew’s experience in oil and gas accounting led him to become the acting treasurer of the Petroleum Accountant’s Society of California, a professional organization comprised of the oil and gas industry’s most knowledgeable and influential accounting professionals.

Engineering Technician

Mr. Sabalza Joined Hathaway LLC as a Petroleum Engineering Intern in 2019 and has progressed into an Engineering Technician Role. He holds a Bachelor of Science Degree in Engineering Sciences with an emphasis in Petroleum Engineering and a minor in Psychology from California State University, Bakersfield. Previously, Mr. Sabalza held Student Assistant roles for the Information and Technology Services Department and Student Recreation Center at California State University, Bakersfield. While at California State University, Bakersfield, Mr. Sabalza also held the positions of Treasurer for both the student chapter of the Society of Petroleum Engineers and the SRC Collegiate Climbing Club.