X0306 4 2021-04-02 0001140536 WILLIS TOWERS WATSON PLC WLTW 0001657943 Davies Susan Dorrance C/O WILLIS GROUP LIMITED 51 LIME STREET LONDON X0 EC3M 7DQ UNITED KINGDOM 1 PAO and Controller Ordinary Shares, nominal value $0.000304635 per share 2021-04-02 4 M 0 646.176 A 2354.176 D Ordinary Shares, nominal value $0.000304635 per share 2021-04-02 4 D 0 646.176 224.98 D 1708 D Phantom Stock Unit 2021-04-02 4 M 0 646.176 D 2021-04-02 2021-04-02 Ordinary Shares, nominal value $0.000304635 per share 646.176 567 D Each share underlying the phantom stock unit award was the economic equivalent of one WLTW Ordinary Share. Dividend equivalent rights accrued under the phantom stock unit award in the form of additional phantom stock units that vested based on the same vesting schedule applicable to the underlying phantom stock unit award. Each dividend equivalent right that accrued in the form of phantom stock units was the economic equivalent of one WLTW Ordinary Share. The phantom stock units, including the dividend equivalents, were settled in cash delivered to the Reporting Person. /s/ Susan D. Davies by Elaine Wiggins, Attorney-in-Fact (power of attorney previously filed) 2021-04-06