Executive Officers

Michael J. Aaronson currently serves as Senior Vice President (“Senior VP”), Business Development and has served in such capacity since 2016.  He served as Vice President (“VP”), Crude Oil Business Development from 2015 to 2016.  From 2014 through 2015, Mr. Aaronson served as VP, Crude Oil Transportation and Storage, from 2012 through 2013, he served as Director, Crude Oil Transportation and Storage and, from 2011 through 2012, he served as Director, Business Development.  Prior to joining Magellan, he served as VP and Chief Financial Officer (“CFO”) for Exterran GP LLC from 2010 through 2011.  Prior to that, Mr. Aaronson served as Managing Partner of Boulder OAK Investment Fund, a private investment company, from 2009 to 2010.  From 1997 to 2009, he served in positions of increasing responsibility with the Global Energy & Power Investment Banking Group of Merrill Lynch & Co., a financial management and advisory firm, including as VP beginning in 2004 and as Director beginning in 2007.



Robert L. Barnes currently serves as Senior VP, Commercial - Crude Oil and has served in such capacity since 2014. He previously served as VP, Commercial – Crude Oil and Marine Terminals from 2011 to 2014. From 2007 through 2011, Mr. Barnes served as VP, Terminals and from 2004 through 2007, as Director, Marine Terminal Services. Prior to joining Magellan in 2004, he worked in various staff and management positions within marketing, business and commercial development, operations and environmental since joining The Williams Companies, Inc. (“Williams”) in 1987.




Jeff L. Holman currently serves as Senior VP, CFO and Treasurer and has served in such capacities since 2019. He previously served as VP, Finance and Treasurer from 2018 to 2019. From 2016 through 2018, Mr. Holman served as VP, Finance, Treasurer and Controller, from 2010 through 2016, as VP, Finance and Treasurer, from 2007 through 2010, as VP, Finance and Assistant Treasurer and various other treasury positions. Prior to joining Magellan in 2004, he held various accounting and treasury positions with Williams and MAPCO Inc. (“MAPCO”) since beginning his career in 1994.




Lisa J. Korner currently serves as Senior VP, Human Resources and Administration and has served in such capacity since 2007.  She was previously VP, Human Resources and Administration from 2006 to 2007, and she served as Director, Human Resources from 2004 to 2006.  Prior to joining Magellan in 2004, Ms. Korner served as Executive Director of Human Resources Strategy and Human Resources — Information Systems for Williams from 2001 to 2002 and served as Director of Human Resources for Williams from 1999 to 2001.  She also worked in various human resources management positions with Williams and MAPCO since 1989.



Melanie A. Little currently serves as Senior VP, Operations and has served in such capacity since 2017. She served in VP-level positions from 2011 to 2017 in Crude Oil Commercial and Operations. From 2007 to 2011, Ms. Little was Director of Transportation Services for Refined Products and Marine. From 2004 to 2007, she served in environmental, health and safety management roles at Magellan. Prior to joining Magellan in 2004, Ms. Little worked for Williams as Manager of Environmental Compliance. Prior to joining Williams, she held project management positions in the areas of civil construction and environmental remediation projects on behalf of the U.S. Army. Ms. Little currently serves on the board of directors of Diversified Gas & Oil PLC and has served in such capacity since 2019.



Douglas J. May currently serves as Senior VP, General Counsel, Compliance and Ethics Officer and Assistant Secretary and has served in such capacities since 2012.  He served as VP and Assistant General Counsel from 2011 until 2012.  Prior to joining Magellan in 2011, Mr. May was a shareholder at the Tulsa, Oklahoma office of GableGotwals law firm.  He was elected a GableGotwals shareholder in 2003 and served on the firm's board of directors from 2008 until 2011.  Prior to joining GableGotwals in 2001, Mr. May held various legal positions with Williams and served as an associate attorney at Skadden, Arps, Slate, Meagher & Flom.



Aaron L. Milford currently serves as President and CEO of Magellan and has served in such capacity since May 1, 2022.  He served COO from 2019 to 2022 and as Senior VP and CFO from 2015 to 2019. Mr. Milford served as VP, Crude Oil Business Development from 2014 to 2015. From 2013 through 2014, he served as Director, Crude Oil Business Development, from 2011 through 2012, as Director, Commercial Development, and from 2007 through 2010, as Director, Business Development. Prior to joining Magellan in 2004, Mr. Milford worked for Williams since 1995 in various staff and management positions including the areas of financial planning, business development and mergers and acquisitions.  He is qualified to serve on our board because of his extensive experience in the energy industry, including his familiarity with our business as a result of his management positions at Magellan.  Mr. Milford earned a B.S. in accounting and M.B.A. from the University of Tulsa and is a chartered financial analyst.



Michael C. Pearson currently serves as Senior VP, Technical Services and has served in such capacity since 2019. He was previously VP, Asset Integrity from 2017 through 2019. From 2010 through 2017, Mr. Pearson served in various other VP-level positions in asset integrity, technical services and operations and, from 2003 through 2010, served in management roles in asset integrity, technical services and operations at Magellan. Prior to joining Magellan in 2004, he worked in leadership roles in technical services and engineering with Williams and MAPCO since 1989.




Mark B. Roles currently serves as Senior VP, Commercial – Refined Products and has served in such capacity since 2021.  He served as VP, Business Optimization from 2020 to 2021.  From 2017 to 2020, Mr. Roles served as VP, Commercial - Crude Oil and from 2014 to 2017, he was VP, Commercial – Marine, Independent Terminals and Commodities. He was Director, Transportation, Marketing and Development from 2013 to 2014, Director, Commercial Operations from 2011 to 2013 and held the position of Manager, Commercial Development from 2007 to 2011.  Prior to 2007, Mr. Roles held supervisory and project management roles in operations and commercial.  Prior to joining Magellan in 2004, he worked for Williams in various positions since 1998.




Code of Ethics for Senior Officers










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