Distribution And Impact Of Discovery Communications Inc. Distribution On The NASDAQ OMX Indexes

On May 16, 2014, Discovery Communications, Inc. (Nasdaq:DISCA) announced a distribution of Class C shares to its stockholders.

NASDAQ OMX is providing the information below to clarify the effect of this distribution on Discovery Communications, Inc. Class A shares in the NASDAQ OMX indexes.

As a result of this transaction, upon distribution, the Discovery Communications, Inc. Class C shares will be added to all NASDAQ OMX indexes that contain Discovery Communications, Inc. Class A shares, including, but not limited to, the NASDAQ-100 Index and the NASDAQ Global Index Family.

This is effective prior to market open on August 7, 2014, the ex-date of the distribution.

In order to best reflect our evolving market, both the Class A shares and the Class C shares of Discovery Communications, Inc. will remain in the Indexes. This action is being taken to provide for seamless distribution of the new securities, and ensure Index continuity.

Projected Index Timeline

August 7 Ex Date:

Prior to market open on Thursday, August 7, 2014, Discovery Communications, Inc. Class C shares will be added to pertinent NASDAQ OMX indexes, including, but not limited to, the NASDAQ-100 and NASDAQ Global Index Family.

In addition, adjustments will be made to the previous closing price of the Discovery Communications, Inc. Class A shares, to reflect the pro rata distribution of the Class C shares.