ONEOK Names Mareburger Chief Information Officer

June 26, 2007

TULSA, Okla., June 26, 2007 /PRNewswire-FirstCall via COMTEX News Network/ -- ONEOK, Inc. (NYSE: OKE) announced today that Robert S. Mareburger, 45, will become chief information officer, effective July 1, 2007.

In his new position, he will report to David Roth, ONEOK senior vice president, administrative services, and will be responsible for leading the company's information technology strategy and execution, including software, applications and systems. Previously, ONEOK's information technology function was managed by Roth.

"Bob's experience and expertise will be valuable as we continue to optimize the use of information technology to improve our business processes and support growth at ONEOK and ONEOK Partners," said Roth.

Mareburger most recently served as general manager, information technology and chief information officer, for CITGO Petroleum Corp. in Tulsa from 1999-2006. Prior to joining CITGO, he spent several years at Andersen Consulting, now Accenture, where he managed the design and development of a new generation of software for upstream oil and gas operations.

Active in community affairs, he currently serves on the city of Tulsa's Technology Board and is a second-term member of the University of Tulsa's College of Business Executive Advisory Board. He has also held leadership roles in United Way and Muscular Dystrophy Association corporate campaigns.

Mareburger received a Bachelor of Science degree in petroleum engineering and a master's degree in business administration from the University of Oklahoma.

To obtain an electronic photo file of Mareburger, visit the ONEOK Web site: http://www.oneok.com/bob_mareburger.jpg.

ONEOK, Inc. (NYSE: OKE) is a diversified energy company. We are the general partner and own 45.7 percent of ONEOK Partners, L.P. (NYSE: OKS), one of the largest publicly traded limited partnerships, which is a leader in the gathering, processing, storage and transportation of natural gas in the U.S. and owns one of the nation's premier natural gas liquids (NGL) systems, connecting much of the natural gas and NGL supply in the Mid-Continent with key market centers. ONEOK is among the largest natural gas distributors in the United States, serving more than 2 million customers in Oklahoma, Kansas and Texas. Our energy services operation focuses primarily on marketing natural gas and related services throughout the U.S. ONEOK is a Fortune 500 company.

For information about ONEOK, Inc., visit the Web site: http://www.oneok.com.

    Analyst Contact: Dan Harrison
                     918-588-7950
    Media Contact:   Megan Washbourne
                     918-588-7572

OKE-G


SOURCE ONEOK, Inc.

Analysts, Dan Harrison, +1-918-588-7950, or Media, Megan Washbourne, +1-918-588-7572,
both of ONEOK, Inc.
http://www.oneok.com