RNS Number : 8117U

Thomson Reuters PLC

19 May 2008

Transaction in Thomson Reuters shares

NEW YORK, NY, May 19, 2008 - Thomson Reuters (NYSE: TRI; TSX: TRI; LSE: TRIL: NASDAQ: TRIN), the world's leading source of intelligent information for businesses and professionals in the financial, legal, tax and accounting, scientific, healthcare, and media markets, today announced the re-purchase of 150,000 Thomson Reuters PLC ordinary shares on May 19, 2008. The average price paid was 1666.3448 pence per share. The highest price per share paid was 1689 pence and the lowest price per share paid was 1642 pence.

As of May 19, 2008, Thomson Reuters PLC had 189,074,507 ordinary shares outstanding. The re-purchased shares of Thomson Reuters PLC will be cancelled.

This information is provided by RNS

The company news service from the London Stock Exchange

END

POSALMATMMABBIP