WASTE MANAGEMENT INC — Director's Dealing 2010

Oct 4, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WASTE MANAGEMENT INC (WM)
CIK: 0000823768
Period of Report: 2010-09-30

Reporting Person: WEIDMAN MARK A (President, Wheelabrator)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-09-30	Common Stock	M	25000.0000	$27.3800	Acquired	47803.4773	Direct
2010-09-30	Common Stock	F	20754.0000	$35.6000	Disposed	27049.4773	Direct
2010-10-01	Common Stock	S	100.0000	$35.9805	Disposed	26949.4773	Direct
2010-10-01	Common Stock	S	201.0000	$35.9800	Disposed	26748.4773	Direct
2010-10-01	Common Stock	S	272.0000	$35.9801	Disposed	26476.4773	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-09-30	Stock Option (Right to Buy)	$27.3800	M	25000.0000	Disposed	2011-06-12	Common Stock (25000.0000)	Direct

Footnotes

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

F2: Stock option granted pursuant to Waste Management, Inc. 1993 Stock Incentive Plan. The stock option originally vested in 25% annual increments commencing on the first anniversary of the date of grant. The Compensation committee of the Board of Directors accelerated the vesting of the Company's outstanding options effective December 28, 2005.