COMCAST CORP — Director's Dealing 2013

May 8, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COMCAST CORP (CMCSA)
CIK: 0001166691
Period of Report: 2013-05-06

Reporting Person: BLOCK ARTHUR R (SVP, GC and Secretary)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-06	Class A Common Stock	M	30900.0000	$25.0200	Acquired	59736.0000	Direct
2013-05-06	Class A Common Stock	M	21270.0000	$18.3400	Acquired	81006.0000	Direct
2013-05-06	Class A Common Stock	M	21150.0000	$14.5400	Acquired	102156.0000	Direct
2013-05-06	Class A Common Stock	M	14850.0000	$18.9800	Acquired	117006.0000	Direct
2013-05-06	Class A Common Stock	M	7500.0000	$19.9200	Acquired	124506.0000	Direct
2013-05-06	Class A Common Stock	M	4650.0000	$17.5000	Acquired	129156.0000	Direct
2013-05-06	Class A Common Stock	M	3675.0000	$22.6600	Acquired	132831.0000	Direct
2013-05-06	Class A Common Stock	M	3370.0000	$25.4400	Acquired	136201.0000	Direct
2013-05-06	Class A Common Stock	S	31113.0000	$42.4219	Disposed	105088.0000	Direct
2013-05-06	Class A Common Stock	F	76252.0000	$42.5200	Disposed	28836.0000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-05-06	Option to Purchase	$19.9200	M	7500.0000	Disposed	2014-03-07	Class A Common Stock (7500.0000)	Direct
2013-05-06	Option to Purchase	$22.6600	M	3675.0000	Disposed	2015-03-13	Class A Common Stock (3675.0000)	Direct
2013-05-06	Option to Purchase	$25.0200	M	30900.0000	Disposed	2021-03-24	Class A Common Stock (30900.0000)	Direct
2013-05-06	Option to Purchase	$18.3400	M	21270.0000	Disposed	2020-03-25	Class A Common Stock (21270.0000)	Direct
2013-05-06	Option to Purchase	$17.5000	M	4650.0000	Disposed	2016-03-09	Class A Common Stock (4650.0000)	Direct
2013-05-06	Option to Purchase	$25.4400	M	3370.0000	Disposed	2017-03-15	Class A Common Stock (3370.0000)	Direct
2013-05-06	Option to Purchase	$14.5400	M	21150.0000	Disposed	2019-03-26	Class A Common Stock (21150.0000)	Direct
2013-05-06	Option to Purchase	$18.9800	M	14850.0000	Disposed	2018-03-27	Class A Common Stock (14850.0000)	Direct

Footnotes

F1: 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.

F2: With respect to the number of shares set forth in Column 7, this option is immediately exercisable.