Management

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Robert S. McAnnally, President and Chief Executive Officer

Sid McAnnally is president and chief executive officer of ONE Gas and a member of the ONE Gas Board of Directors.

McAnnally joined the company in 2015 as senior vice president of operations responsible for the operation of its three natural gas utilities – Oklahoma Natural Gas Company, Kansas Gas Service and Texas Gas Service. He was promoted to chief operating officer in 2020, assuming additional responsibilities for the company’s administrative functions, including human resources and information technology.

Before joining ONE Gas, McAnnally was an officer of Energen Corporation, serving first as vice president of external affairs and strategic planning, then as senior vice president of customer service and marketing for its utility subsidiary, Alagasco. Before joining Energen, McAnnally practiced law, representing clients in the utility, financial and corporate sectors.

McAnnally serves on the Board of Directors of the American Gas Association. He served as the Chair of the Board of Trustees of the American Gas Foundation and remains an active trustee. McAnnally is also involved in several other industry associations and charitable organizations.  

McAnnally holds a Juris Doctorate from the University of Alabama and a Bachelor of Arts degree from Auburn University. He has also attended the Executive Education Program at the Harvard Business School. 

Updated September 2021

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Caron A. Lawhorn, Senior Vice President, Chief Financial Officer

Caron Lawhorn is senior vice president, chief financial officer, of ONE Gas.

At ONE Gas’s separation from ONEOK, Inc. into a standalone, publicly traded company, Lawhorn was named senior vice president, commercial, responsible for commercial activities of ONE Gas’s three natural gas distribution utilities – Oklahoma Natural Gas Company, Kansas Gas Service and Texas Gas Service. In early 2014, Lawhorn served in the same role at ONEOK, Inc., prior to ONE Gas becoming a stand-alone, publicly traded company. Prior to that, she was president of ONEOK’s natural gas distribution segment. From July 2009 until March 2011, she was senior vice president, corporate planning and development of ONEOK and ONEOK Partners, responsible for business development, strategic and long-range planning and capital investment.

She became senior vice president and chief accounting officer of ONEOK in 2007, adding responsibility for ONEOK Partners in 2008. Prior to that, she was senior vice president of financial services and treasurer of ONEOK. She joined ONEOK in 1998, after serving as a senior manager at KPMG and chief financial officer of Emergency Medical Services Authority in Tulsa.

In January 2019, Lawhorn was appointed to the board of directors of AAON (NASDAQ-AAON), a manufacturer of heating and air conditioning equipment headquartered in Tulsa. She is a member of the board of regents of Tulsa Community College, a member of the board of directors of the Tulsa Area United Way and served as immediate past chair of the board of directors for the Southern Gas Association. She is a graduate of Leadership Oklahoma – Class 21 and Leadership Tulsa – Class 32.

Lawhorn earned her Bachelor of Science degree in business administration from the University of Tulsa, where she was named a Distinguished Alumna of the university and an Outstanding Alumna in the College of Business. She also is a graduate of the Harvard Business School’s Advanced Management Program.

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Curtis L. Dinan, Senior Vice President and Chief Operating Officer

Curtis L. Dinan is senior vice president and chief operating officer of ONE Gas.

He is responsible for operations of the company’s three natural gas distribution utilities – Oklahoma Natural Gas Company, Kansas Gas Service and Texas Gas Service  – as well as the company’s commercial activities, safety functions, rates and regulatory, government and community affairs and customer service.

In 2014, at ONE Gas’s separation from ONEOK, Inc. into a standalone, publicly traded company, Dinan was named senior vice president and chief financial officer. He was promoted to senior vice president and chief commercial officer in 2020.

Prior to the separation from ONEOK, he served as president, natural gas, of ONEOK Partners, responsible for the commercial activities in its natural gas gathering and processing and natural gas pipelines segments. Before that, Dinan was senior vice president, chief financial officer and treasurer of ONEOK and ONEOK Partners from 2007-2011. He served on the ONEOK Partners Board of Directors from October 2007 to March 2011.

He joined ONEOK in 2004 as vice president and chief accounting officer, after being an audit partner with both Arthur Andersen LLP and Grant Thornton LLP.

Dinan is a member of the board of directors and chair of the audit committee of Paul Mueller Company (OTC-MUEL), a manufacturer of equipment and components for the food, dairy, beverage, chemical and pharmaceutical industries headquartered in Springfield, Missouri. He is a member of the board of trustees for Drury University, and the boards of directors of Tulsa Community College Foundation, Tulsa Regional Chamber and Downtown Tulsa Partnership. He is also a past chair of the finance committee for the American Gas Association and has served on the boards of directors for the Interstate Natural Gas Association of America and the Texas Pipeline Association. He is a graduate of Leadership Oklahoma Class 20 and Leadership Tulsa Class 24.

Dinan earned Bachelor of Arts degrees in accounting and business administration in 1989 from Drury University, where he was named a Distinguished Alumnus for Career Achievement. He also is a graduate of Harvard Business School’s Advanced Management Program.

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Joe McCormick, Senior Vice President, General Counsel and Assistant Secretary

Joe McCormick is senior vice president, general counsel and assistant secretary of ONE Gas, responsible for legal matters of its three natural gas distribution utilities – Oklahoma Natural Gas, Kansas Gas Service and Texas Gas Service.

Prior to ONE Gas becoming a standalone publicly traded company separate from ONEOK Inc., he served as vice president and associate general counsel of ONEOK in a similar capacity.

McCormick joined ONEOK in 2003 as the managing attorney of Oklahoma Natural Gas. Prior to that, he served as an assistant attorney general with the Oklahoma attorney general’s office and as an assistant general counsel with the Oklahoma Insurance Department.

McCormick is a graduate of Leadership Tulsa – Class 46. He also has served as a board member of the Oklahoma Individual Self-Insured Guaranty Fund, the Oklahoma Academy, the Urban League of Greater Oklahoma City, Oklahoma Lawyers for Children, the Lyric Theatre and the Oklahoma Huntington Disease Society. McCormick is a member of the Oklahoma Bar Association, the Association of Corporate Counsel, Metropolitan Tulsa Urban League and the Oklahoma Chapter of the American Association of Blacks in Energy.

A native of California, McCormick earned a Bachelor of Arts degree in public administration in 1984 from the University of Central Oklahoma in Edmond and a Juris Doctorate in 1987 from the University of Oklahoma College of Law in Norman.

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Mark Bender, Senior Vice President, Administration and Chief Information Officer

Mark Bender is senior vice president, administration and chief information officer, of ONE Gas. Bender joined ONE Gas in 2014 as vice president and chief information officer.

Prior to ONE Gas, Bender was vice president of business systems for Chesapeake Energy in Oklahoma City, where he also served as vice president of information technology operations. There, he was responsible for managing traditional infrastructure services and creating innovative technology solutions. Bender also has been chief information officer at both Oral Roberts University and Williams Communications.

He began his career in the natural gas industry in 1987 in the information technology group for Source Gas, a natural gas distribution company in Fayetteville, Arkansas. He then joined Ernst & Young as a management consultant specializing in the energy and insurance markets before returning to his hometown of Tulsa to join The Williams Companies in 1993.

Bender currently serves on the University of Oklahoma’s Computer Science Board of Advisors. Additionally, he recently joined the Board of Directors for A New Leaf, a non-profit organization. He previously served on the Hewlett Board of Advisors and the City of Tulsa Information Technology Advisory Council.

A Tulsa native, Bender earned a Bachelor of Science degree in management information systems in 1987 from the University of Tulsa.

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Julie White, Vice President Communications, Inclusion & Diversity

Julie White is vice president of Communications, Public Affairs and Inclusion and Diversity. White is responsible for internal and external communications as well as for ONE Gas’ inclusion and diversity program

Before joining ONE Gas in 2018, she served as vice president, corporate communications for Berkshire Hathaway Energy, an Iowa-based company consisting of several locally managed energy businesses with more than 21,000 employees. In that position, she reported to the president and CEO and directed the communications strategy, provided counsel to the top leaders and was responsible for developing all internal and external communications activities that drove stakeholder understanding, acceptance, perception and trust.

She was a member of the Senior Energy Communicators Group and a committee member of Edison Electric Institute Executive Advisory, USTelecom Public Affairs and Iowa Telecommunications Association Marketing.

White holds a bachelor’s degree in business administration with an emphasis in marketing from Iowa State University, where she graduated with distinction.