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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
823768	Waste Management Inc	WM	Refuse Systems (4953)	731309529

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1197040	P David Steiner	1001 Fannin, Suite 4000 Houston TX 77002	President And Ceo	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2013-01-22	335,000	$21.08	468,504	No	4	M	Direct
Common Stock	Acquisiton	2013-01-22	56,593	$19.61	525,097	No	4	M	Direct
Common Stock	Disposition	2013-01-22	294,638	$35.28	230,459	No	4	F	Direct
Common Stock	Disposition	2013-01-23	37	$35.50	230,422	No	4	S	Direct
Common Stock	Disposition	2013-01-23	1,649	$35.51	228,773	No	4	S	Direct
Common Stock	Disposition	2013-01-23	2,434	$35.51	226,339	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	M	Direct
No	4	F	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (Right to Buy)	Disposition	2013-01-22	56,593	$19.61	56,593	$19.61
Common Stock	Stock Option (Right to Buy)	Disposition	2013-01-22	335,000	$21.08	335,000	$21.08

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0		2013-03-06	No	4	M	Direct
0	2004-04-03	2013-04-03	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	11,116	Indirect	By 401(k) Plan
Common Stock	343,294	Indirect	Steiner Family Holdings, LLC

Footnotes

Stock option exercise and shares withheld to pay option costs and taxes pursuant to a stock trading plan.
Sale of additional shares to cover personal federal income tax obligation.
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.