ONEOK, Inc. (NYSE: OKE) ("ONEOK") and Magellan Midstream Partners, L.P. (NYSE: MMP) ("Magellan") today announced that they have executed a definitive merger agreement under which ONEOK will acquire all outstanding units of Magellan in a cash-and-stock transaction valued at approximately $18.8 billion including assumed debt, resulting in a combined company with a total enterprise value of $60.0 billion. The consideration will consist of $25.00 in cash and 0.6670 shares of ONEOK common stock for each outstanding Magellan common unit, representing a current implied value to each Magellan unitholder of $67.50 per unit, for a 22% premium, based on May 12, 2023 closing prices.