X0508 4 2024-02-26 0 0000051644 INTERPUBLIC GROUP OF COMPANIES, INC. IPG 0001545711 Bonzani Andrew IPG 909 THIRD AVENUE NEW YORK NY 10022 0 1 0 0 EVP, General Counsel 0 Common Stock 2024-02-26 4 A 0 41338 32.41 A 153107 D Common Stock 2024-02-26 4 F 0 42208 32.41 D 110899 D Common Stock 2024-02-27 4 S 0 40468 32.2 D 70431 D Performance based shares, awarded to Mr. Bonzani on February 26, 2024 after achieving specific performance goals and vesting over the 2021-2024 period. Includes restricted shares that are subject to forfeiture under certain circumstances. This is not an open market sale; rather it represents a surrender of shares to the company to satisfy withholding tax obligations. Open market sale. Reflects average price of multiple sales on February 27, 2024 ranging from $32.06-$32.34. Mr. Bonzani undertakes to provide upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. /s/Robert Dobson POA for Andrew Bonzani 2024-02-28