X0407 4 2023-04-01 0001140536 WILLIS TOWERS WATSON PLC WTW 0001477865 Gebauer Julie Jarecke C/O WILLIS GROUP LIMITED 51 LIME STREET LONDON X0 EC3M 7DQ UNITED KINGDOM 1 Head of Health, Wealth &Career 0 Ordinary Shares, nominal value $0.000304635 per share 2023-04-01 4 A 0 1398 0 A 83948 D Ordinary Shares, nominal value $0.000304635 per share 2023-04-01 4 X 0 4 0 A 83952 D Ordinary Shares, nominal value $0.000304635 per share 2023-04-01 4 A 0 860 0 A 84812 D Ordinary Shares, nominal value $0.000304635 per share 2023-04-03 4 S 0 2500 232.3763 D 82312 D Ordinary Shares, nominal value $0.000304635 per share 534 I Dane Adam Gebauer Management Trust UA Feb 18, 2012 Ordinary Shares, nominal value $0.000304635 per share 534 I Jeffrey Austin Gebauer Management Trust UA Feb 18, 2012 Dividend Equivalent Rights 2023-04-01 4 X 0 4 0 D Ordinary Shares, nominal value $0.000304635 per share 4 9.146 D Comprised of 1,398 time-based restricted share units ("RSUs"), which represent the right to receive ordinary shares, par value $0.000304635 per share, of the Issuer. The RSUs shall vest ratably over a three-year period as of the first, second and third anniversaries of the grant date. Comprised of 860 time-based RSUs which represent the right to receive ordinary shares, par value $0.000304635 per share, of the Issuer. The RSUs shall vest ratably over a two-year period as of the first and second anniversaries of the grant date. The sales reported in this Form 4 were pursuant to a Rule 10b5-1 trading plan adopted by the reporting person during an open trading window in a prior quarter. This transaction was executed in multiple trades at prices ranging from $232.09 to $232.8845. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected. The dividend equivalent rights accrued on the reporting person's RSU award and were credited in the form of additional RSUs that vested and were payable at the same time as the underlying RSUs. Each dividend equivalent right is the economic equivalent of one WTW Ordinary Share. /s/ Julie J. Gebauer by Elaine Wiggins, Attorney-in-Fact (power of attorney previously filed) 2023-04-04