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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1166691	Comcast Corp	CMCSA	Cable & Other Pay Television Services (4841)	270000798

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1203700	M Sheldon Bonovitz	One Comcast Center Philadelphia PA 19103		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Class A Special Common Stock	Disposition	2012-02-29	3,573	$0.00	15,837	No	5	G	Direct
Class A Common Stock	Acquisiton	2012-05-11	11,250	$16.67	32,824	No	4	M	Direct
Class A Common Stock	Disposition	2012-05-11	4,932	$29.72	27,892	No	4	S	Direct
Class A Common Stock	Disposition	2012-05-11	6,318	$29.72	21,574	No	4	F	Direct
Class A Special Common Stock	Disposition	2012-05-11	7,500	$29.32	8,337	No	4	S	Direct
Class A Special Common Stock	Disposition	2012-05-11	10,000	$29.32	123,062	No	4	S	Indirect	By Family Partnerships
Class A Special Common Stock	Disposition	2012-05-11	10,000	$29.32	113,062	No	4	S	Indirect	By Family Partnerships

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	5	G	Direct
No	4	M	Direct
No	4	S	Direct
No	4	F	Direct
No	4	S	Direct
No	4	S	Indirect	By Family Partnerships
No	4	S	Indirect	By Family Partnerships

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Class A Common Stock	Option to Purchase	Disposition	2012-05-11	11,250	$0.00	11,250	$16.67

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0		2012-11-20	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Class A Common Stock	5,899	Indirect	By Family Partnerships
Class A Common Stock	72	Indirect	By Trust

Footnotes

This transaction was executed in multiple trades at prices ranging from $29.28 to $29.35. The price reported above reflects the weighted-average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.
This transaction was executed in multiple trades at prices ranging from $29.63 to $29.69. The price reported above reflects the weighted-average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.
This option is immediately exercisable.