ONEOK (OKE) will raise its quarterly dividend by 2.5 percent to $0.605 per share. The new annual dividend payment of $2.42 per share gives ONEOK an indicated dividend yield of 5.7% based on Wednesday's closing price of $42.32 per share.

"As the pure-play general partner of ONEOK Partners, we are committed to delivering sustainable, long-term value to our shareholders," said Terry K. Spencer, president and chief executive officer of ONEOK. "Since 2006, the partnership has completed more than $8 billion in capital-growth projects and acquisitions, and it has another $3 billion in capital-growth projects in various stages of construction. Even in this volatile commodity pricing environment, ONEOK remains well positioned to benefit from ONEOK Partners' increased earnings and distributable cash flow as a result of completed capital-growth projects."

This dividend increase is ONEOK's fourth since becoming the pure-play general partner of ONEOK Partners in February 2014 and represents a 51 percent increase during that period.

ONEOK, Inc. is an energy midstream service provider in the United States. The company connects NGL (natural gas liquids supply) in the Mid-Continent, Permian and Rocky Mountain regions with key market centers and an extensive network of natural gas gathering, processing, storage and transportation assets.