X0306 4 2021-02-22 0 0000107263 WILLIAMS COMPANIES, INC. WMB 0001799286 Porter John Dean ONE WILLIAMS CENTER TULSA OK 74172 0 1 0 0 VP, Controller & CAO Common Stock 2021-02-22 4 M 0 3418 22.91 A 21982.06 D Common Stock 2021-02-22 4 F 0 1185 22.91 D 20797.06 D Common Stock 2021-02-22 4 F 0 710 22.91 D 20087.06 D Restcted Stock Units 0.00 2021-02-22 4 M 0 3418 0.00 D 2021-02-20 2021-02-20 Common Stock 3418 0 D Payout in shares of common stock of restricted stock units (RSUs), in a transaction exempt under Rules 16b-3(d) and 16b-6(b), as awarded under The Williams Companies, Inc. 2007 Incentive Plan. Payout in shares of common stock of RSUs awarded pursuant to a 2018 performance-based RSU grant agreement between the Reporting Person and the Issuer and including an adjustment for performance at greater than target as certified by the Issuer's Compensation and Management Development Committee. Adjustment of the common stock from the amount reported on prior Form 4 to correct an administrative error. A portion of the RSUs in footnote (2) above were withheld for taxes. A portion of a 2018 grant of time-based RSUs previously reported on an as-owned basis in Table I were withheld for taxes. Cheryl L. Mahon, Attorney-in-Fact 2021-02-24