ONEOK INC NEW

Solicitation of proxies will be primarily by mail and telephone. We have engaged Sodali & Co, 333 Ludlow St., 5th Floor, South Tower, Stamford,

Connecticut 06902, to solicit proxies for a fee of $11,000, plus out-of-pocket expenses. In addition, certain of our officers, directors and employees

may solicit proxies on our behalf in person or by mail, telephone, fax or email, for which such persons will receive no additional compensation. We

will pay all costs of soliciting proxies. We will also reimburse brokerage firms, banks and other custodians, nominees and fiduciaries for their

reasonable expenses in forwarding proxy materials to our shareholders.

In connection with our solicitation of proxies for our 2026 annual meeting, we intend to file a proxy statement and WHITE proxy card with the

Securities and Exchange Commission. Shareholders may obtain our proxy statement (and any amendments and supplements thereto) and other

documents as and when filed with the Securities and Exchange Commission without charge from the Securities and Exchange Commission’s

website at: www.sec.gov.