X0303 4 2009-04-25 0000020171 CHUBB CORP CB 0001036398 BAIRD ZOE THE CHUBB CORPORATION 15 MOUNTAIN VIEW ROAD WARREN NJ 07061-1615 1 Common 2009-04-25 4 M 0 445 41.11 A 6452 D STOCK UNITS 0 2009-04-25 4 M 0 445 41.11 D 2009-04-25 Common 445 0 D On April 25, 2006, the reporting person received a stock unit award in the amount of 445 shares with one stock unit being the equivalent of one share of common stock. This stock unit award was settled in shares of common stock on April 25, 2009. Patricia S. Tomczyk, POA 2009-04-27