| Larry C. Larsen |
Larry C. Larsen currently works at The Williams Cos., Inc., as Chief Operating Officer & Executive Vice President from 2025. Mr. Larsen received his undergraduate degree in 1998 from the University of Utah. |
| Robyn L. Ewing |
Robyn L. Ewing is currently the Director at the Tulsa Performing Arts Center Trust, Tulsa Public Schools Foundation, Tulsa Community Foundation, The Child Abuse Network, Southwestern Regional Medical Center, Inc., Foundation for Tulsa Schools, River Park Foundation, Tulsa Educare, and The Williams Cos., Inc. She is also a Member of the HR Policy Association, National Association of Corporate Directors (Virginia), Society for Human Resource Management, The Human Resource Planning Society, Roundtable Group, Southwest Benefits Association, EWF International, and a Trustee at Oklahoma State University-Tulsa. In the past, Ms. Ewing served as the Chairman at Tulsa Area United Way, Director-Workforce Planning at MAPCO, Inc., Director at Domestic Violence Intervention Services, American Heart Association, Inc., Leadership Oklahoma, Cancer Treatment Centers of America, Inc., Oklahoma Arts Institute, The Parent Child Center of Tulsa, Inc., Chief Administrative Officer at WPX Energy, Inc., and Programmer at Cities Service Co.. She obtained her undergraduate degree from The University of Tulsa in 1976. |
| John D. Porter |
Mr. John D. Porter, CPA, is a Chief Financial Officer & Senior Vice President at The Williams Cos., Inc. He is on the Board of Directors at Energy Infrastructure Council. Mr. Porter was previously employed as a Chief Accounting Officer & Vice President by Transcontinental Gas Pipe Line Co. LLC and a Vice President-Investor Relations by Williams Partners LP. He received his undergraduate degree from Oklahoma State University. |
| Stephen W. Bergstrom |
Mr. Stephen W. Bergstrom is a Lead Independent Director at The Williams Cos., Inc. and an Executive Chairman, Co-President & CEO at Magnolia Infrastructure Partners LLC. He is on the Board of Directors at The Williams Cos., Inc. and Third Coast Midstream Holdings LLC. Mr. Bergstrom was previously employed as a Chairman by Williams Partners LP, a President, CEO & General Partner by American Midstream LLC, and a President & Chief Operating Officer by Dynegy, Inc. He also served on the board at American Midstream Partners LP. He received his undergraduate degree from Iowa State University. |
| Terrance Lane Wilson |
Terrance Lane Wilson currently works at Tulsa Community Foundation, as Director, River Park Foundation, as Director, Tulsa Friends of Finance University of, as Director, Tulsa Area United Way, as Director, The Williams Cos., Inc., as Senior Vice President & General Counsel from 2017, Williams Pipeline GP LLC, as General Counsel & Senior Vice President, and Women's Energy Network, as Member-National Advisory Council. Mr. Wilson also formerly worked at Hall, Estill, Hardwick, Gable, Golden & Nelson PC, as Director & Partner, The University of Tulsa Lettermen's Association, as Director & Vice President, Tulsa Habitat for Humanity, as Director, Eisenhower Foundation, as President, Crosstown Learning Center, as President, and Williams Partners LP, as Senior Vice President & General Counsel. Mr. Wilson received his undergraduate degree in 1989 from The University of Tulsa and graduate degree in 1994 from The University of Tulsa College of Law. |
| Debbie Cowan |
Debbie Cowan currently works at The Williams Cos., Inc., as Chief Human Resources Officer & Senior VP from 2018, Tulsa Area Human Resources Association, as Member, and Society Of Human Resources Management, as Member. Ms. Cowan also formerly worked at John Zink Co. LLC, as Global Director-Human Resources from 2005 to 2013, Robert Half, Inc., as Staffing Manager from 2000 to 2001, Koch Chemical Technology Group LLC, as Global Vice President-Human Resources from 2013 to 2018, and Aircraft Fueling Systems, Inc., as Manager-Human Resources from 2002 to 2005. Ms. Cowan received her undergraduate degree from The University of Arkansas and graduate degree from the University of Oklahoma. |
| Mary A. Hausman |
Ms. Mary A. Hausman, CPA, is a Chief Accounting Officer, VP & Controller at The Williams Cos., Inc., a Chief Accounting Officer & Vice President at Northwest Pipeline LLC and a Chief Accounting Officer & Vice President at Transcontinental Gas Pipe Line Co. LLC. Ms. Hausman was previously employed as a Vice President & Chief Accounting Officer by NV Energy, Inc. She received her undergraduate degree from Kansas State University. |
| Chad J. Zamarin |
Chad J. Zamarin currently works at The Williams Cos., Inc., as President, Chief Executive Officer & Director from 2025, Williams Pipeline GP LLC, as Director, Interstate Natural Gas Association of America, as Director, WPZ GP LLC, as Director & Senior Vice President-Corporate from 2018, and Caiman Energy II LLC, as Director. Mr. Zamarin also formerly worked at Williams Partners LP, as Director & SVP-Corporate Strategic Development from 2017 to 2018, Cheniere Energy, Inc., as President & Senior Vice President-Pipeline from 2014 to 2017, NiSource, Inc., as Chief Operating Officer from 2012 to 2014, Columbia Pipeline Group, Inc., as Vice President-Engineering, Nevco, Inc., as Chief Operations Officer from 2011 to 2014, Pennant Midstream LLC, as President, and Columbia Midstream & Minerals Group LLC, as Chief Operating Officer from 2011 to 2014. Mr. Zamarin received his undergraduate degree from Purdue University and Masters Business Admin degree from the University of Houston. |
| Alan S. Armstrong |
Alan S. Armstrong currently works at WPZ GP LLC, as Chairman & Chief Executive Officer from 2018, The Williams Cos., Inc., as Executive Chairman from 2025, BOK Financial Corp., as Independent Director from 2013, American Petroleum Institute, Inc., as Director, The Philbrook Museum of Art, as Director, American Exploration & Production Council, as Director, Tulsa Metro Chamber, as Director, The Gilcrease Museum National Board, as Director, The Williams Foundation, as Director, Junior Achievement of Oklahoma, Inc., as Director from 2013, Junior Achievement USA, as Director, Energy Infrastructure Council, as Director, the University of Oklahoma, as Member-Distinguished Graduates Society, The Business Roundtable, as Member, The University of Oklahoma Foundation, Inc., as Trustee, and Gallogly College of Engineering, as Member-Distinguished Graduates Society. Mr. Armstrong also formerly worked at Williams Partners LP, as Chief Executive Officer in 2011, WPX Energy, Inc., as Chairman in 2011, Tulsa Area United Way, as Chairman-Energy Division, Junior Achievement, Inc., as Vice Chairman, Tulsa Regional Chamber of Commerce, as Chairman, The National Petroleum Council, as Vice Chairman, Goodwill Industries of Tulsa, as Director, Oklahoma Business & Education Coalition, Inc., as Director, Third Coast Midstream LLC, as Director, Williams Partners LP, as Chief Operating Officer & Director from 2005 to 2010, Williams Partners GP LLC, as Senior Vice President from 2010 to 2011, The Natural Gas Supply Association, as Vice President, and Gas Processors Association, as President-Elect from 2009 to 2011. Mr. Armstrong received his undergraduate degree in 1985 from the University of Oklahoma. |
| Peter A. Ragauss |
Peter A. Ragauss currently works at The Williams Cos., Inc., as Independent Director from 2016, Alley Theatre, as Director, Baltic-American Freedom Foundation, as Director, JSC Skulte LNG Terminal, as Director, and APA Corp., as Independent Director from 2014. Mr. Ragauss also formerly worked at BP Products North America, Inc., as Chief Executive Officer from 2000 to 2003, Baker Hughes Holdings LLC, as Chief Financial Officer & Senior Vice President from 2006 to 2014, BP Plc, as Controller-Refining & Marketing from 2003 to 2006, El Paso Energy International Co., as Vice President-Finance from 1996 to 1998, Tenneco Energy, as Vice President-Corporate Development, Amoco Energy International, as Vice President-Finance & Portfolio Management, and Baker Hughes Co., as Chief Financial Officer & Senior Vice President from 2006 to 2014. Mr. Ragauss received his undergraduate degree from Michigan State University and Masters Business Admin degree from Harvard Business School. |
| Richard E. Muncrief |
Richard E. Muncrief currently works at The Williams Cos., Inc., as Independent Director from 2022, American Petroleum Institute, Inc., as Director, American Exploration & Production Council, as Director, Indian Nations Council-Boy Scouts of America, as Director, and Metropolitan Tulsa Chamber of Commerce, as Member. Mr. Muncrief also formerly worked at WPX Energy, Inc., as Chairman, President & Chief Executive Officer in 2017, Devon Energy Corp., as President, Chief Executive Officer & Director from 2021 to 2025, Apco Oil & Gas International, Inc., as Chairman from 2014 to 2015, Quest Midstream Partners LP, as President, Chief Operating Officer & Director from 2007 to 2008, Burlington Resources, Inc., as General Manager-Operations, Continental Resources, Inc., as Senior VP-Operations & Resource Development from 2009 to 2014, ConocoPhillips, as Operations Manager-San Juan Basin Unit in 2007, and Resource Production Co., as Business Manager from 2008 to 2009. Mr. Muncrief received his undergraduate degree in 1980 from Oklahoma State University. |
| Scott Douglas Sheffield |
Scott Douglas Sheffield was the founder of Pioneer Natural Resources Co., founded in 1997, where the title held was Director from 2023 to 2024. Current jobs include Chairman & Chief Executive Officer at Pioneer Natural Resources GPC, Inc. since 2007, Independent Director at The Williams Cos., Inc. since 2016, Director at SMU-Cox School of Business, and Non-Executive Director at Tamboran Resources Corp. starting in 2025. Former jobs include Chairman & Chief Executive Officer at Parker & Parsley Petroleum Co. from 1989 to 1997, Chief Executive Officer at Pioneer Southwest Energy Partners LP from 2007 to 2009, Chairman & Chief Executive Officer at Parker & Parsley Development Co. from 1979 to 1989, Chairman & Chief Executive Officer at Pioneer Natural Resources Gp LLC from 2008 to 2013, Director at Evergreen Resources, Inc. from 1996 to 2004, Independent Non-Executive Director at Santos Ltd. from 2014 to 2017, Director at America's Natural Gas Alliance, Director at The National Petroleum Council, Director at Maguire Energy Institute, and Production & Reservoir Engineer at Amoco Production Co. Education includes undergraduate studies at The University of Texas at Austin. |
| Michael A. Creel |
Mr. Michael A. Creel, CPA, is an Independent Director at The Williams Cos., Inc., a Director & Manager at Lucid Energy Group II LLC, a Member at Financial Executives International, a Member at Texas Society of Certified Public Accountants and a Member at The American Institute of Certified Public Accountants. He is on the Board of Directors at The Williams Cos., Inc. and Lucid Energy Group II LLC. Mr. Creel was previously employed as a Chief Executive Officer & Director by EPE Holdings LLC, a President, Chief Executive Officer & Director by Enterprise GP Holdings LP, a Chief Executive Officer & Director by Enterprise Products Partners LP, a Chief Financial Officer & Executive Vice President by Duncan Energy Partners LP, a President, Chief Executive Officer & Director by EPE Holdings LLC, a President & Chief Executive Officer by Enterprise Products GP LLC, a President, Chief Executive Officer & Director by Enterprise Products Operating LLC, and a Group Vice Chairman by EPCO, Inc. He also served on the board at Suncor Energy, Inc., EPE Holdings LLC, DEP Holdings LLC, Edge Petroleum Corp., Enterprise Products Operating LP and TEPPCO Partners LP. He received his undergraduate degree from McNeese State University. |
| William Harold Spence |
William Harold Spence currently works at Corporate Leadership Council, as Chairman, Arizona Public Service Co., as Director from 2021, Pinnacle West Capital Corp., as Independent Director from 2021, The Williams Cos., Inc., as Independent Director from 2016, Lafayette College, as Director, Central Networks West Plc, as Non-Executive Director from 2015, Lehigh Valley Partnership, as Director, Allentown Symphony Association, Inc., as Director, Valley Youth House of Allentown, as Director, Lehigh Valley Health Network, Inc., as Trustee from 2018, and The Pennsylvania Society, as Council Member. Mr. Spence also formerly worked at PPL Corp., as Non-Executive Chairman from 2020 to 2021, Kentucky Utilities Co., as Director, Louisville Gas & Electric Co., as Director, PPL Electric Utilities Corp., as Director, Talen Energy Supply LLC, as Director, PPL UK Distribution Holdings Ltd., as Director, National Grid Electricity Distribution Midlands Ltd., as Director from 2015 to 2017, National Grid Electricity Distribution Network Holdings Ltd., as Director, Electric Power Research Institute, Inc., as Director, Edison Electric Institute, Inc., as Director, LG&E & KU Energy LLC, as Director, Institute of Nuclear Power Operations, Inc., as Director, Nuclear Energy Institute, as Director, United Way of the Greater Lehigh Valley, as Director, WPD WEM Ltd., as Director, Conectiv Power Delivery, as Senior Vice President from 2000 to 2006, Delmarva Power & Light Co., as Vice President-Trading, Pepco Holdings LLC, as President from 2002 to 2006, Pepco Energy Services, Inc., as President, and Talen Generation LLC, as President. Mr. Spence received his Masters Business Admin degree from Bentley University and undergraduate degree from The Pennsylvania State University. |
| Carri Ann Lockhart |
Carri Ann Lockhart currently serves as Chief Executive Officer, Director & MD at Karoon Energy Ltd. since 2025. She is an Independent Director at The Williams Cos., Inc. since 2023. She holds Director positions at Offshore Rig Museum, Inc. and Ascent Resources LLC. She is also an Independent Director at Innovex International, Inc. since 2022. Former roles include Managing Director & Director at Marathon Oil U.K. LLC, Independent Director at Dril-Quip, Inc., Executive VP-Technology, Digital & Innovation at Equinor ASA from 2020 to 2022, and Regional Vice President-Eagle Ford at Marathon Oil Co. Education includes undergraduate studies at Montana Technological University (Montana). |
| Stacey H. Doré |
Ms. Stacey H. Doré is a Chief Strategy & Sustainability Officer at Vistra Corp., an Independent Director at The Williams Cos., Inc., a Member at The Dallas Assembly, a Member at The International Women's Forum and a Member at Women of Tocqueville. She is on the Board of Directors at The Williams Cos., Inc., Texas Women's Foundation, National Association of Corporate Directors and Trinity Christian Academy (Texas). Ms. Doré was previously employed as a Senior Vice President & General Counsel by InfraREIT, Inc., a Vice President & General Counsel by Luminant Holding Co. LLC, an Executive Vice President & General Counsel by Energy Future Holdings Corp., an Attorney by Vinson & Elkins LLP, a SVP-Utility & Power Operations by Hunt Energy Corp., a President by Hunt Utility Services LLC, a President & Chief Executive Officer by Sharyland Utilities LLC, and a President & Chief Executive Officer by Sharyland Utilities LP. She also served on the board at Girls, Inc. She received her undergraduate degree from the University of Louisiana at Lafayette and a graduate degree from Harvard Law School. |
| Jesse J. Tyson |
Jesse J. Tyson currently works at The Williams Cos., Inc., as Independent Director from 2022, Benedict College, as Trustee, and Lane College, as Trustee. Mr. Tyson also formerly worked at National Black MBA Association, Inc., as President, Chief Executive Officer & Director from 2012 to 2018, United Way of Miami-Dade, Inc., as Director, and Exxonmobil Inter-America, Inc., as Director-Global Aviation from 2008 to 2011. Mr. Tyson received his undergraduate degree from Lane College and Masters Business Admin degree from The Ohio State University. |
| Rose M. Robeson |
Rose M. Robeson currently works at NPK International, Inc., as Independent Chairman from 2023, The Williams Cos., Inc., as Independent Director from 2020, SM Energy Co., as Independent Director from 2014, Juvenile Diabetes Research Foundation (Rocky Mountain), as Director, The American Institute of Certified Public Accountants, as Member, The Financial Executives Institute, as Member, and Colorado Society of Certified Public Accountants, Inc., as Member. Ms. Robeson also formerly worked at Tesco Corp., as Director from 2015 to 2017, Third Coast Midstream Holdings LLC, as Independent Director from 2014 to 2016, Third Coast Midstream LLC, as Independent Director from 2014 to 2016, Antero Midstream Corp., as Independent Director from 2017 to 2022, AMGP GP LLC, as Director from 2017 to 2019, Ernst & Young LLP, as Principal, Duke Energy Field Services LLC, as Chief Financial Officer & Vice President, DCP Midstream LP, as Chief Financial Officer & Senior Vice President from 2012 to 2014, Total Petroleum North America Ltd., as Assistant Treasurer in 1996, Kinder Morgan, Inc., as Treasurer & Vice President from 1996 to 2000, DCP Midstream GP LLC, as Chief Financial Officer & Senior Vice President from 2012 to 2014, DCP Midstream Partners LP, as Chief Financial Officer & Senior Vice President from 2012 to 2014, and DCP Midstream LLC (Old), as Chief Financial Officer & Group Vice President from 2009 to 2012. Ms. Robeson received her undergraduate degree from Northwest Missouri State University. |
