X0306 4 2013-01-29 0001018399 ENTERPRISE BANCORP INC /MA/ EBTC 0001501922 BARONI GINO J C/O ENTERPRISE BANCORP, INC. 222 MERRIMACK STREET LOWELL MA 01852 1 Common Stock 2013-01-29 4 P 0 120 17.285 A 2285 D /s/ John P. Clancy, Jr. as attorney-in-fact for Gino J. Baroni 2013-02-11