X0303 4 2011-03-25 0001166691 COMCAST CORP CMCSA 0001203694 BURKE STEPHEN B ONE COMCAST CENTER PHILADELPHIA PA 19103 1 Executive Vice President Class A Common Stock 2011-03-27 4 M 0 47250.0000 0.0000 A 411270.2230 D Class A Common Stock 2011-03-27 4 F 0 21321.0000 0.0000 D 389949.2230 D Class A Common Stock 11650.3240 I By 401(k) Option to Purchase 25.0200 2011-03-25 4 A 0 676000.0000 0.0000 A 2021-03-24 Class A Common Stock 676000.0000 676000.0000 D Restricted Stock Units 0.0000 2011-03-25 4 A 0 188100.0000 0.0000 A Class A Common Stock 188100.0000 188100.0000 D Restricted Stock Units 0.0000 2011-03-27 4 M 0 47250.0000 0.0000 D Class A Common Stock 47250.0000 140850.0000 D The options were granted on March 25, 2011 and become exercisable as follows: 30% becomes exercisable on the 2nd anniversary of the date of grant; an additional 15% on each of the 3rd, 4th and 5th anniversaries of the date of grant; and an additional 5% on each of the 6th, 7th, 8th, 9th and 9.5th anniversaries of the date of grant. Each restricted stock unit represents a contigent right to receive one share of Class A Common Stock. The restricted stock units vest in installments of 15%, 15%, 15%, 15% and 40% on the 13th-month, 2nd, 3rd, 4th and 5th anniversaries of the date of grant (March 25, 2011), respectively. These restricted stock units vest on the transaction date. Arthur R. Block, Attorney-in-fact 2011-03-28