Comcast Results Presentation Deck

Cable Communications 1st Quarter 2021 Overview Customer Relationships (M) Revenue Commentary Customer relationships: +5.0% to 33.5M Total customer relationship net adds of 380K; best 1Q result on record Broadband customer net adds of 461K Per CR* 31.9 Adjusted EBITDA 5 1Q20 $6.1 $63.88 +7.0% 1Q20 +5.0% 33.5 1Q21 +12.4% $6.8 $68.35 $14.9 1Q20 ($B) Net Cash Flow $4.5 +5.9% $15.8 1Q21 +15.6% $5.1 ($B) ($B) 1Q21 ● - Revenue: +5.9% to $15.8B - Added 278K wireless lines, best quarterly result on record; ending with 3.1M total lines - Broadband: +12.0% to $5.6B Wireless: +49.7% to $513M Business Services: +6.1% to $2.2B Advertising: +10.8% to $618M, +13.3% excl. political Video: -0.2% to $5.6B Adjusted EBITDA: +12.4% to $6.8B; +7.0% per customer relationship Programming expenses +5.5% Non-programming expenses -1.1%; -5.9% per customer relationship Adjusted EBITDA margin improved +250bps y/y to 43.2% in 1Q21 Wireless Adjusted EBITDA of +$6M compared to a loss of -$59M in 1Q20 1Q21 1Q20 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. See Notes on Slide 11 Net Cash Flow: +15.6% to $5.1B Capital expenditures +8.0% to $1.4B; represents 8.7% of Cable revenue

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