ARLINGTON, Va., Feb.

LONDON, Nov.

LONDON and WASHINGTON, Aug.

SAO PAULO and NEW YORK, May 17, 2011 /PRNewswire/ -- Thomson Reuters, the world's leading source of intelligent information for businesses and professionals, today announced it has acquired Mastersaf, a top provider of tax and accounting solutions for companies operating in Brazil.

NEW YORK and LONDON, May 16, 2011 /PRNewswire/ -- Thomson Reuters, the world's leading source of intelligent information for businesses and professionals, has announced the acquisition of London-based World-Check, a leading global provider of financial crime and corruption prevention information.