Q: What is the trading symbol for ONEOK Partners, L.P. and on which exchange are the units traded?
A: Trading symbol: OKS
    Exchange: New York Stock Exchange
    CUSIP number: 68268N

Q: Who is ONEOK Partners’ transfer agent and how does a registered unitholder contact the agent for account information?
A: Computershare Investor Services
    P.O. Box 43078
    Providence, RI 02940-3078
    800) 519-3111
    (781) 575-2726
    Visit Transfer Agent Web site.

Q: How can I buy ONEOK Partners units?
A: Any registered broker can buy or sell units for you.

Q: Can I purchase ONEOK Partners units directly from the company? Does ONEOK Partners have a DRIP plan?
A: No. However, any registered broker can assist you in purchasing OKS units and may be able to arrange for your distributions to be automatically reinvested.

Q: Does ONEOK Partners pay dividends?
A: No, ONEOK Partners does not pay a dividend like a corporation does. We pay a quarterly distribution since we are a publicly traded partnership. You may review ONEOK Partners' distribution history here.

Q: What is the difference between a distribution and a dividend?
A: A distribution is a return of capital to partners or unitholders, whereas a dividend is considered a payout of earnings to shareholders.

Q: How can I obtain the latest earnings information?
A: Earnings news releases are available on the News Releases page.Upcoming earnings release dates are on the Eventspage. You may wish to subscribe to our e-mail notification service to receive news releases and other financial information from ONEOK Partners.

Q: When did Northern Border Partners, L.P. change its name to ONEOK Partners, L.P.?
A: On May 17, 2006, Northern Border Partners, L.P. (NYSE: NBP) was renamed ONEOK Partners, L.P. Trading of the ONEOK Partners common units on the New York Stock Exchange under the symbol OKS was effective May 22, 2006.