Comcast Results Presentation Deck

Cable Communications 2nd Quarter 2021 Overview Customer Relationships (M) Revenue Per CR* 32.1 Adjusted EBITDA 5 2Q20 $6.2 $68.35 +8.9% 2Q20 +5.2% 33.8 2Q21 +14.5% $7.1 $70.07 $14.4 2Q20 ($B) Net Cash Flow $4.4 +10.9% $16.0 2Q21 +14.6% $5.0 ($B) ($B) 2Q21 Commentary Customer relationships: +5.2% to 33.8M Total customer relationship net adds of 294K; the best 2Q on record Broadband customer net adds of 354K; the best 2Q on record Added 280K wireless lines, best quarterly result on record ● Revenue: +10.9% to $16.0B; +9.3% excluding accrued customer RSN fee adjustments in 2Q20** Broadband: +14.3% to $5.7B; +12.6% excluding accrued customer RSN fee adjustments in 2Q20** Wireless: +70.4% to $556M Video: +2.6% to $5.6B; +0.5% excluding accrued customer RSN fee adjustments in 2Q20** Business Services: +9.9% to $2.2B Advertising: +58.6% to $679M; +60.4% excl. political Adjusted EBITDA: +14.5% to $7.1B; +8.9% per customer relationship Programming expenses +12.1%; +5.0% excluding accrued customer RSN fee adjustments in 2Q20** Non-programming expenses +5.7%; +0.5% per customer relationship Wireless Adjusted EBITDA of +$68M compared to a loss of -$37M in 2Q20 Adjusted EBITDA margin improved +140bps y/y to 44.2%; +200bps excluding accrued customer RSN fee adjustments in 2Q20** 2Q20 2Q21 All percentages represent year/year growth rates, except Adjusted EBITDA margin and Capital Expenditures as a % of Revenue. *Represents average monthly results per customer relationship. **Cable Communications reported results for 2Q20 include the impacts of accrued customer RSN related fee adjustments. Refer to Notes page for further details. See Notes on Slide 11 Net Cash Flow: +14.6% to $5.0B; +15.1% in 1H21 Capital expenditures +16.8% to $1.7B; represents 10.6% of Cable revenue

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