X0306 4 2019-02-19 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 2019-02-19 4 A 0 274 68.2312 A 274 D Common Stock, par value $.0.01 2019-02-19 4 A 0 494 68.2312 A 768 D The reporting person was elected to the Issuer's Board of Directors on February 19, 2019. The 274 shares reported represent the reporting person's annual cash retainer, which the reporting person elected to receive in shares of Issuer's common stock, and which was prorated for the period of February 2019 through April 2019. The shares were issued under the Issuer's Equity Incentive Plan. The 494 shares reported represent the reporting person's annual stock retainer shares issued under the Issuer's Equity Incentive Plan and prorated for the period of February 2019 through April 2019. By: Eric Grimshaw, Attorney-in-Fact For: Mark W. Helderman 2019-02-20