RNS Number : 0112V

Thomson Reuters PLC

21 May 2008

Transaction in Thomson Reuters shares

NEW YORK, NY, May 21, 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

145,000 Thomson Reuters PLC ordinary shares on May 21, 2008. The average price

paid was 1628.4639 pence per share. The highest price per share paid was 1641

pence and the lowest price per share paid was 1614 pence.

As of May 21, 2008, Thomson Reuters PLC had 187,814,507 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

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