X0306 4 2016-11-03 0 0001437107 Discovery Communications, Inc. DISCK 0001455381 ADVANCE LONG-TERM MANAGEMENT TRUST ONE WORLD TRADE CENTER NEW YORK NY 10007 0 0 1 0 0001455383 NEWHOUSE FAMILY HOLDINGS, L.P. ONE WORLD TRADE CENTER NEW YORK NY 10007 0 0 1 0 0000914546 ADVANCE PUBLICATIONS, INC 950 FINGERBOARD ROAD STATEN ISLAND NY 10305 0 0 1 0 0000914545 NEWHOUSE BROADCASTING CORP 5823 WIDEWATERS PARKWAY EAST SYRACUSE NY 13057 0 0 1 0 Series C participating preferred stock 2016-11-03 4 D 0 2223264 48.47 D Series C common stock 4446528 28603255 I See note Each share of Series C preferred stock is convertible pursuant to its terms into two shares of Series C common stock at any time (following a stock dividend that occurred on August 6, 2014). Through subsidiaries; each reporting person disclaims beneficial ownership except to the extent of its pecuniary interest. Sold to the issuer in an exempt transaction. Advance Long-Term Management Trust, By: /s/ Michael A. Newhouse, as Trustee on behalf of Advance Long-Term Management Trust 2016-11-03 Newhouse Family Holdings, L.P., By: Advance Long-Term Management Trust, as General Partner, By /s/ Michael A. Newhouse, as Trustee on behalf of Advance Long-Term Management Trust 2016-11-03 Advance Publications, Inc., By: /s/ Michael A. Newhouse, as Co-President, on behalf of Advance Publications, Inc. 2016-11-03 Newhouse Broadcasting Corporation, By: /s/ Michael A. Newhouse, as Executive Vice President, on behalf of Newhouse Broadcasting Corporation 2016-11-03