X0304 4 2011-11-08 0 0001437107 Discovery Communications, Inc. DISCA 0001259263 HENDRICKS JOHN S ONE DISCOVERY PLACE SILVER SPRING MD 20910 1 1 0 0 Founder Series A Common Stock 2011-11-08 5 G 0 4575 0 D 1743375 D Series A Common Stock 2011-11-09 4 S 0 218400 42.14 D 1524975 D Series A Common Stock 2011-11-09 4 S 0 81600 42.99 D 1443375 D Series A Common Stock 2011-11-10 4 S 0 200000 41.59 D 1243375 D The price reported represents the weighted average sales price of shares of Series A common stock sold in multiple transactions at prices ranging from $41.76 to $42.75 per share. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The price reported represents the weighted average sales price of shares of Series A common stock sold in multiple transactions at prices ranging from $42.76 to $43.32 per share. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The price reported represents the weighted average sales price of shares of Series A common stock sold in multiple transactions at prices ranging from $41.49 to $41.79. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The trading symbols for the Issuer's Series A, Series B and Series C common stock are, respectively, DISCA, DISCB and DISCK. /s/ Bruce Campbell, by power of attorney 2011-11-14