X0305 4 2012-05-16 0001452575 Mead Johnson Nutrition Co MJN 0001455752 P'Pool William 2701 PATRIOT BOULEVARD GLENVIEW IL 60026-8039 1 Sr.VP, Gen Counsel & Secretary Common Stock 2012-05-16 4 M 0 25214.0000 26.5800 A 42685.0000 D Common Stock 2012-05-16 4 M 0 11314.0000 46.3000 A 53999.0000 D Common Stock 2012-05-16 4 M 0 4931.0000 58.8600 A 58930.0000 D Common Stock 2012-05-16 4 S 0 27500.0000 84.6021 D 31430.0000 D Common Stock 20.1890 I By MJN 401(k) Plan Stock Option (Right to Buy) 46.3000 2012-05-16 4 M 0 11314.0000 0.0000 D 2020-02-24 Common Stock 11314.0000 5659.0000 D Stock Option (Right to Buy) 2012-05-16 4 M 0 4931.0000 0.0000 D 2021-03-02 Common Stock 4931.0000 9865.0000 D Stock Option (Right to Buy) 26.5800 2012-05-16 4 M 0 25214.0000 0.0000 D 2019-03-10 Common Stock 25214.0000 8405.0000 D The price reported is a weighted average exercise price. The shares were sold in multiple same-way transactions on May 16, 2012 at prices ranging from $84.49 to $84.75 per share of common stock. If requested by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, the reporting person will provide full information regarding the number of shares of common stock sold at each separate price. This portion of the option is fully vested and exercisable. The option was granted to the reporting person, and was not sold to the reporting person. As such, the reporting person did not pay any consideration for the option. This option was granted with an exercise price of $58.86. /s/ Eryk J. Spytek, Attorney-in-Fact 2012-05-17