Item 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Our common stock is listed on the NYSE under the trading symbol “OKE.” The corporate name ONEOK is used in stock listings.

At February 20, 2024, there were 13,034 holders of record of our 583,159,446 outstanding shares of common stock.

For information regarding our Employee Stock Award Program and other equity compensation plans, see Note K of the Notes to Consolidated Financial Statements and “Equity Compensation Plan Information” included in Part III, Item 12, Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters, in this Annual Report.

PERFORMANCE GRAPH

The following performance graph compares the performance of our common stock with the S&P 500 Index, the Alerian Midstream Energy Select Index, the S&P 500 Energy Index and a ONEOK Peer Group during the period beginning on December 31, 2018, and ending on December 31, 2023.

Value of a $100 Investment, Assuming Reinvestment of Distributions/Dividends,

at December 31, 2018, and at the End of Every Year Through December 31, 2023.

Table of Contents

(a) - The S&P 500 Energy Index is a subindex of the S&P 500 that includes those companies classified as members of the energy sector.

(b) - The Alerian Midstream Energy Select Index measures the composite performance of approximately 25 North American energy infrastructure companies that are engaged in midstream activities involving energy commodities. Beginning in 2024, we will replace the Alerian Midstream Energy Select Index with the S&P 500 Energy Index as it is more relevant to our business subsequent to the Magellan Acquisition.

(c) - The current ONEOK Peer Group is composed of the following companies: Energy Transfer LP; EnLink Midstream, LLC; Enterprise Products Partners L.P.; Kinder Morgan, Inc.; MPLX LP; NuStar Energy L.P.; Plains All American Pipeline, L.P.; Targa Resources Corp.; Western Midstream Partners, LP; and The Williams Companies, Inc.