X0306 4 2020-03-18 0 0001039684 ONEOK INC /NEW/ OKE 0001766621 HELDERMAN MARK W 100 W. FIFTH STREET TULSA OK 74103 1 0 0 0 Common Stock, par value $.0.01 2020-03-18 4 P 0 30000 13.0596 A 40000 D The price reported in column 4 is a weighted average price. These shares were purchased in two transactions at prices ranging from $13.00 to $13.1113. The reporting person undertakes to provide ONEOK, Inc., any security holder of ONEOK, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote to this Form 4. By: Eric Grimshaw, Attorney-in-Fact For: Mark W. Helderman 2020-03-19