Advantages:

• Purchases are made without the assistance of a broker.
• No commissions are charged on purchases.
• Minimum initial investment of at least $250.
• Investments can be made as a lump sum or through automatic monthly withdrawals from an existing bank account.
• Current shareholders can invest a minimum of $25 and a maximum of $10,000 at any time.
• Cash dividends can be automatically reinvested or you can receive cash dividends on all or a portion of the shares registered in your name - by check or by electronic transfer directly to your bank account.
• Traditional, Roth or Education Individual Retirement Accounts that invest in ONEOK Common Stock can be established through the Plan.
• Shares can be transferred or given as gifts.

For more information or to enroll in the Plan, call 1-866-235-0232 (within the U.S. and Canada) or 1-781-575-4709 (outside the U.S. and Canada), or write:

Computershare Trust Company, N.A.

For standard U.S. postal mail: P.O. Box 43078 Providence, RI 02940-3078

For overnight/express delivery: ATTN: Priority Processing 250 Royall Street Canton, MA 02021

The information on this Web site is a summary of the ONEOK, Inc. Direct Stock Purchase and Dividend Reinvestment Plan. This information does not constitute an offer to sell or a solicitation of an offer to buy, nor shall there be any sale of these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state.