X0305 4 2012-05-11 0 0001410636 American Water Works Company, Inc. AWK 0001178460 DOBSON JULIE A 1025 LAUREL OAK ROAD VOORHEES NJ 08043 1 0 0 0 Common Stock 2012-05-11 2012-05-11 4 A 0 1748 0 A 9342 D Represents Stock Units that will be converted by the issuer into its common stock, on a one-for-one basis, generally within 30 days following the earlier of August 9, 2013 (subject to the right of the reporting person to defer payment in accordance with the terms of the grant), a separation from service or a change of control of the issuer. /s/ Karen K. Pettiford-Wilson by Power of Attorney previously filed 2012-05-14