WASTE MANAGEMENT INC — Director's Dealing 2013

May 16, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WASTE MANAGEMENT INC (WM)
CIK: 0000823768
Period of Report: 2013-05-15

Reporting Person: STEINER DAVID P (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-15	Common Stock	M	90000.0000	$29.2400	Acquired	341772.7650	Direct
2013-05-15	Common Stock	F	72916.0000	$41.9500	Disposed	268856.7650	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-05-15	Stock Option (Right to Buy)	$29.2400	M	90000.0000	Disposed	2014-03-04	Common Stock (90000.0000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	11116.1906	Indirect
Common Stock	343294.4020	Indirect

Footnotes

F1: Stock option granted pursuant to Waste Management, Inc. 2000 Stock Incentive Plan. The stock option originally vested in 25% annual increments commencing on the first anniversary of the date of the grant. The Compensation Committee of the Board of Directors accelerated the vesting of the Company's outstanding options effective December 28, 2005.