ONEOK Elects Mark Helderman to Board of Directors

Mark W. Helderman Joins ONEOK Board of Directors

TULSA, Okla. — Feb. 21, 2019 — The board of directors of ONEOK, Inc. (NYSE: O.) has elected Mark W. Helderman to its board, effective Feb. 19, 2019.
With this election, the ONEOK board of directors now has 11 members, nine of whom are independent.
“Mark is a valuable addition to the ONEOK board of directors,” said John ‘W. Gibson, ONEOK chairman. “His experience and expertise will further strengthen our board and benefit our shareholders.”
Heldennan, 60, held positions of increasing responsibility at Sasco Capital Inc., an independent, institutional investment firm, focused primarily on corporate turnarounds, restructurings and transformations, where he was employed since 1997. Helderman retired from his position at Sasco Capital as managing director and co-portfolio manager on Jan. 31, 2019.
Heldennan has mom than 30 years of experience in the U.S. equities markets, including engagement with senior management teams to develop a deep understanding of their corporate vision, value creation philosophy, commitment to long-term sustainable value and shareholder alignment.
In addition to his portfolio management role, Helderman has been an analyst with broad experience in the commodity, energy, industrial and utility sectors for more than 20 years.

Analyst Contact: Megan Patterson 918-561-5325 Media Contact: Stephanie Higgins 918-591-5026