Exhibit 4
10 September 2015
WPP plc (“WPP”)
Purchase of Own Securities
WPP announces that on 10 September 2015 it purchased 150,000 of its ordinary shares at a price of 1365.3283 pence per ordinary share. All of these shares will be held as treasury shares.
Following the above purchase, WPP holds 32,939,722 ordinary shares as treasury shares. The total number of WPP shares in issue is 1,294,046,111 (excluding shares to be held in treasury).