X0303 4 2010-02-10 0 0000354190 GALLAGHER ARTHUR J & CO AJG 0001185998 CARY RICHARD C ARTHUR J. GALLAGHER & CO. TWO PIERCE PLACE ITASCA IL 60143 0 1 0 0 Controller, CAO Common Stock 2010-02-10 4 J 0 612 22.8602 A 22678 I by Trust Common Stock 23918 D Dividend reinvestment pursuant to the Arthur J. Gallagher & Co. Deferred Equity Participation Plan. The directly owned common stock holdings reflected in Table I of this form include shares purchased through Arthur J. Gallagher & Co.'s Employee Stock Purchase Plan, which satisfies the exemption requirements of Rule 16b-3. Richard C. Cary 2010-02-12