Our leadership team.

Mr. Krogmeier joined American Refining Group in April of 2024. He is responsible for planning and directing all aspects of organizational strategy, policy, objectives and initiatives, as well as attainment of short- and long-term financial and operational goals. Prior to joining us, he served as Senior Vice President of Parkland Fuel Corporation in Calgary, Alberta Canada where he was responsible for refining, supply, trading, wholesale marketing, refining, and HS&E.  Much of his early career was devoted to multiple roles across the Downstream value chain in at Chevron in both domestic and international arenas.  With a Bachelor of Science degree in Business Administration from University of Iowa, he went on to complete his Master’s Degree in Business Administration at the University of California, Berkeley.

Mr. Zolkos joined American Refining Group in 2011. His overall responsibilities include accounting, crude disbursements, and information technology. Mr. Zolkos is also responsible for maintaining banking relationships and preparing financial statements, budgeting, and heading the daily operations of the accounting department. He also lends his expertise on all federal and state tax compliance and reporting. He earned a bachelor of science degree in finance from Penn State University and a master of business administration and finance degree from Carnegie Mellon University. Prior to joining us, Mr. Zolkos was vice president of finance at PLS Logistics Services in Cranberry Township, Pennsylvania.

Mr. Brewer joined American Refining Group in 2019. Prior to that, he held a number of technical and manufacturing management roles in refining. He brings 30+ years of industry experience, primarily in Petrochemical and Refining operations. Mr. Brewer is responsible for the overall operation of American Refining Group’s Bradford refinery and its blending and packaging facilities. He holds a bachelor’s degree in chemical engineering from the Missouri University of Science and Technology and went on to complete a master of business administration from St. Bonaventure University.

Mr. Kozminski rejoined American Refining Group in 2007. He has overall responsibility for the Research and Development Laboratory, the Quality Control Laboratory, the Technical Service Department, the New Product Development Department, and the ISO quality-management system. With nearly 30 years of industry experience, Mr. Kozminski has co-/authored several technical papers published in peer-reviewed journals. He graduated summa cum laude from the University of Pittsburgh at Bradford with a bachelor’s degree in chemistry.

Mr. Griffin joined American Refining Group on Aug. 8, 2022, as Vice President, Refined Product Sales. Mr. Griffin brings with him more than 20 years of senior leadership roles in the specialty chemical space including industrial process fluids, metalworking lubricants, coatings and polymer materials. Most recently he served as director of sales and technical service at Diversified Chemical Technologies Inc. (DCT). Prior to DCT, Mr. Griffin held senior leadership positions at Avient, Quaker Houghton and Henkel Corp.  Mr. Griffin’s experience includes leading domestic and international teams in business development, key account development, post-merger integration and portfolio management. Mr. Griffin holds a bachelor’s degree in business administration from the State University of New York at Oswego.

Mr. Murray joined American Refining Group in 2004 as manager of crude oil operations for our western division, and in 2008 he was named vice president of crude oil acquisition. After being promoted to his current position in 2011, Mr. Murray took over directing the organization’s purchasing and logistical activities. He is responsible for all crude-supply and acquisition activities, including the company’s crude-terminal and -gathering operations in Ohio. Prior to joining ARG, Mr. Murray served as vice president of exploration and production at Belden & Blake Corp. Mr. Murray earned a bachelor of science degree in petroleum engineering from Marietta College in Ohio.

Mr. Simpson has been with ARG since June 2017, when he assumed leadership of our Blending and Packaging Plants, as well as Planning and Logistics. He was named Director – Supply Chain on Jan. 3, 2022 and most recently promoted to VP – Supply Chain on October 1, 2023. Mr. Simpson oversees all aspects of supply chain management, including (but not limited to) logistics, warehousing, inventory management, material forecasting, capacity planning and sourcing, master scheduling, inventory control and financial costing in order to sustain production goals. This spans from the development of forecast replenishment needs, to product acquisition, to finished goods inventory and on-time delivery. Mr. Simpson completed a bachelor’s degree in ceramic engineering at Alfred University. He also earned the Association for Operations Management’s Certification in Production and Inventory Management (CPIM) and is an ISO-certified Internal Auditor.

Ms. Boser joined American Refining Group in 2008 as a human resources generalist. Promoted into her current role, she is responsible for developing integrated approaches to human capital strategies, policies, procedures, programs, and solutions that are aligned with strategic business objectives, as well as the company’s vision, mission, and core values. Ms. Boser earned her bachelor’s degree in business administration from the University of Mount Union in Alliance, Ohio. She is a member of the Society for Human Resource Management and holds the Professional Human Resource (PHR) certification.

Mr. Smith joined American Refining Group in 2008. Previously, he was a partner in the Philadelphia-based law firm Duane Morris, where he practiced corporate law and represented American Refining Group as outside counsel for more than 20 years. Mr. Smith earned his law degree at Boston University in 1980 and is a 1973 graduate of Dartmouth College.