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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
1203697	R Arthur Block	One Comcast Center Philadelphia PA 19103	Svp, Gc And Secretary	No	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
Class A Common Stock	Acquisiton	2013-05-06	30,900	$25.02	59,736	No	4	M	Direct
Class A Common Stock	Acquisiton	2013-05-06	21,270	$18.34	81,006	No	4	M	Direct
Class A Common Stock	Acquisiton	2013-05-06	21,150	$14.54	102,156	No	4	M	Direct
Class A Common Stock	Acquisiton	2013-05-06	14,850	$18.98	117,006	No	4	M	Direct
Class A Common Stock	Acquisiton	2013-05-06	7,500	$19.92	124,506	No	4	M	Direct
Class A Common Stock	Acquisiton	2013-05-06	4,650	$17.50	129,156	No	4	M	Direct
Class A Common Stock	Acquisiton	2013-05-06	3,675	$22.66	132,831	No	4	M	Direct
Class A Common Stock	Acquisiton	2013-05-06	3,370	$25.44	136,201	No	4	M	Direct
Class A Common Stock	Disposition	2013-05-06	31,113	$42.42	105,088	No	4	S	Direct
Class A Common Stock	Disposition	2013-05-06	76,252	$42.52	28,836	No	4	F	Direct

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

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Class A Common Stock	Option to Purchase	Disposition	2013-05-06	7,500	$0.00	7,500	$19.92
Class A Common Stock	Option to Purchase	Disposition	2013-05-06	3,675	$0.00	3,675	$22.66
Class A Common Stock	Option to Purchase	Disposition	2013-05-06	30,900	$0.00	30,900	$25.02
Class A Common Stock	Option to Purchase	Disposition	2013-05-06	21,270	$0.00	21,270	$18.34
Class A Common Stock	Option to Purchase	Disposition	2013-05-06	4,650	$0.00	4,650	$17.50
Class A Common Stock	Option to Purchase	Disposition	2013-05-06	3,370	$0.00	3,370	$25.44
Class A Common Stock	Option to Purchase	Disposition	2013-05-06	21,150	$0.00	21,150	$14.54
Class A Common Stock	Option to Purchase	Disposition	2013-05-06	14,850	$0.00	14,850	$18.98

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
7,500		2014-03-07	No	4	M	Direct
7,350		2015-03-13	No	4	M	Direct
72,100		2021-03-24	No	4	M	Direct
77,990		2020-03-25	No	4	M	Direct
13,950	2007-03-10	2016-03-09	No	4	M	Direct
13,480	2008-03-16	2017-03-15	No	4	M	Direct
56,400	2010-03-27	2019-03-26	No	4	M	Direct
24,750	2009-03-28	2018-03-27	No	4	M	Direct

Footnotes

This transaction was executed in multiple trades at prices ranging from $42.35 to $42.51. 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.
With respect to the number of shares set forth in Column 7, this option is immediately exercisable.