X0306 4 2022-08-09 0001140536 WILLIS TOWERS WATSON PLC WTW 0001435988 Hess Carl Aaron C/O WILLIS GROUP LIMITED 51 LIME STREET LONDON X0 EC3M 7DQ UNITED KINGDOM 1 1 Chief Executive Officer Ordinary Shares, nominal value $0.000304635 per share 2022-08-09 4 M 0 6519 110.58 A 66177.083 D Ordinary Shares, nominal value $0.000304635 per share 2022-08-09 4 F 0 5129 211.71 D 61048.083 D Stock Option (right to buy) 110.58 2022-08-09 4 M 0 6519 0 D 2018-07-01 2022-09-10 Ordinary Shares, nominal value $0.000304635 per share 6519 0 D The stock option was exercised on a net share settlement basis. Represents the number of shares withheld by the Issuer to satisfy (i) withholding taxes related to such exercise and (ii) the aggregate exercise price for the stock option. 100% of the shares underlying the option vested and were exercisable on July 1, 2018. The reporting person is exercising the options in light of the upcoming expiration date of those options. /s/ Carl A. Hess by Elaine Wiggins, Attorney-in-Fact (power of attorney previously filed) 2022-08-10