144 0002031930 XXXXXXXX LIVE 0001075124 Thomson Reuters Corporation 001-31349 19 Duncan Street Toronto A6 M5H 3H1 4163648700 Ragunath Ramanathan Officer Common Shares UBS Financial Services Inc

1000 Harbor Blvd 3rd Floor Weehawken NJ 07086

1250 163375 444842487 12/15/2025 Nasdaq Common Shares 12/10/2024 Vesting of Restricted Share Units Thomson Reuters Corporation N 1250 12/15/2025 NA Y The 444,842,487 Common Shares of Thomson Reuters Corporation outstanding are as of November 3, 2025, as indicated in Exhibit 99.1 to Thomson Reuters Corporation's Form 6-K dated November 5, 2025. 12/15/2025 /s/JOSEPH CASSIDY, for UBS Financial Services Inc, as attorney-in-fact for Ragunath Ramanathan