X0303 4 2009-06-11 0 0000911177 CASELLA WASTE SYSTEMS INC CWST 0001055352 CASELLA JOHN W C/O CASELLA WASTE SYSTEMS 25 GREENS HILL LANE RUTLAND VT 05701 1 1 0 0 Chief Executive Officer Restricted Stock Unit 2009-06-11 4 A 0 53591 0 A Class A Common Stock 53591 53591 D Represents the award of Restricted Stock Units ("RSUs") under the Casella Waste Systems, Inc. ("Casella") 2006 Stock Incentive Plan. Each RSU represents a contingent right to receive one share of Casella's Class A Common Stock. RSUs reported on this Form 4 shall vest in three equal annual installments beginning on the first anniversary of the Grant Date. The grant to the Reporting Person reported on this Form 4 also includes RSUs that vest upon achievement by Casella of specified performance measures. These RSUs will be reported upon vesting pursuant to Section 16(a) of the Securities Exchange Act of 1934 and applicable regulations thereunder. Upon vesting, the Reporting Person is entitled to receive one share of Casella's Class A Common Stock per vested Restricted Stock Unit. /s/ John W. Casella 2009-07-06