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LONDON--(BUSINESS WIRE)-- Ap19 FORM 8.3 - Amendment to Purchase IRISH TAKEOVER PANEL DISCLOSURE UNDER RULE 8.3 OF THE IRISH TAKEOVER PANEL ACT, 1997, TAKEOVER RULES, 2013 DEALINGS BY PERSONS WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE 1. KEY INFORMATION 2. INTERESTS AND SHORT POSITIONS (a) Interests and short positions (following dealing) in the class of relevant security dealt in (Note 3) (1) 2,785,376 2.16% 680,874 0.53% (2) 354,221 0.27% 604,791 0.47% (3) 0 0.00% 0 0.00% 3,139,597 2.44% 1,285,665 1.00% (b) Interests and short positions in relevant securities of the company, other than the class dealt in (Note 3) Class of relevant security: Long Short Number (%) Number (%) (1) Relevant securities (2) Derivatives (other than options) (3) Options and agreements to purchase/sell Total Ap20 1. DEALINGS (Note 4) (a) Purchases and sales Purchase 12 203.1120 USD Purchase 31 199.8000 USD Purchase 45 202.9550 USD Purchase 74 199.5500 USD Purchase 100 199.5900 USD Purchase 100 203.5575 USD Purchase 100 203.1100 USD Purchase 100 203.0300 USD Purchase 100 202.8200 USD Purchase 100 200.3700 USD Purchase 100 199.7600 USD Purchase 116 203.6224 USD Purchase 120 200.5333 USD Purchase 200 200.5050 USD Purchase 200 199.5950 USD Purchase 202 199.8326 USD Purchase 209 203.5156 USD Purchase 228 200.5430 USD Purchase 328 200.3384 USD Purchase 351 199.7570 USD Purchase 390 199.9289 USD Purchase 457 199.9140 USD Purchase 485 203.4359 USD Purchase 520 200.0726 USD Purchase 625 200.0232 USD Purchase 700 203.5389 USD Purchase 1,000 199.7155 USD Purchase 1,010 199.7740 USD Purchase 1,218 200.1866 USD Purchase 3,212 199.2300 USD Purchase 4,134 200.0881 USD Purchase 4,242 200.1138 USD Purchase 6,567 200.1119 USD Purchase 6,922 200.0934 USD Purchase 7,137 201.7453 USD Purchase 8,422 199.8021 USD Purchase 12,974 201.2478 USD Purchase 18,337 202.4577 USD Purchase 32,305 201.3094 USD Purchase 39,748 203.1446 USD Sale 2 203.4300 USD Sale 11 202.6472 USD Sale 25 201.4100 USD Sale 45 202.9550 USD Sale 65 199.5500 USD Sale 100 202.8500 USD Sale 106 203.0177 USD Sale 122 202.9150 USD Sale 194 202.6825 USD Sale 198 203.5638 USD Sale 200 201.7950 USD Sale 200 203.3125 USD Sale 200 202.9800 USD Sale 259 202.8301 USD Sale 300 203.3650 USD Sale 425 202.8407 USD Sale 1,256 203.1103 USD Sale 1,927 203.1284 USD Sale 2,902 202.1232 USD Sale 4,242 200.1138 USD Sale 6,712 201.7083 USD Sale 6,717 201.6243 USD Sale 6,792 200.8114 USD Sale 7,229 199.2300 USD Sale 8,542 203.0101 USD Sale 9,136 203.2162 USD Sale 9,586 203.1582 USD Sale 9,822 203.2203 USD Sale 16,213 202.3648 USD Sale 29,693 201.5101 USD Sale 30,000 199.9878 USD (b) Derivatives transactions (other than options transactions) Product name, e.g. CFD Nature of transaction (Note 6) Number of relevant securities (Note 7) Price per unit (Note 5) (c) Options transactions in respect of existing relevant securities (i) Writing, selling, purchasing or varying Product name, e.g. call option Writing, selling, purchasing, varying etc. Number of securities to which the option relates (Note 7) Exercise price Type, e.g. American, European etc. Expiry date Option money paid/received per unit (Note 5) (ii) Exercising Product name, e.g. call option Number of securities Exercise price per unit (Note 5) (d) Other dealings (including transactions in respect of new securities) (Note 4) Nature of transaction (Note 8) Details Price per unit (if applicable) (Note 5) Ap21 2. OTHER INFORMATION Agreements, arrangements or understandings relating to options or derivatives 14 Jan 2021 Large Holdings Regulatory Operations 020 3134 7213

Answer: Form 8.3 - WILLIS TOWERS WATSON PLC - Amendment