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.