WASTE MANAGEMENT INC — Director's Dealing 2013

Jan 30, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WASTE MANAGEMENT INC (WM)
CIK: 0000823768
Period of Report: 2013-01-28

Reporting Person: CALDWELL BARRY H (Senior Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-01-28	Common Stock	M	15000.0000	$29.2400	Acquired	45132.5919	Direct
2013-01-28	Common Stock	S	13031.0000	$37.0000	Disposed	32101.5919	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-01-28	Stock Option (Right to Buy)	$29.2400	M	15000.0000	Disposed	2014-03-04	Common Stock (15000.0000)	Direct

Footnotes

F1: Stock option exercise and shares sold pursant to a stock trading plan.

F2: 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.