X0306 4 2009-12-29 0 0001452575 Mead Johnson Nutrition Co MJN 0001202294 SIGAL ELLIOT 2701 PATRIOT BLVD GLENVIEW IL 60026 1 0 0 0 Common Stock 2009-12-29 4 P 0 8.715 44.58 A 1048.48 I By BMS 401(k) Plan Common Stock 2010-01-15 4 P 0 4.442 46.81 A 1052.922 I By BMS 401(k) Plan Common Stock 2010-04-01 4 P 0 4.554 52.90 A 1057.476 I By BMS 401(k) Plan Common Stock 2010-07-01 4 P 0 4.768 50.53 A 1062.244 I By BMS 401(k) Plan Common Stock 2010-10-01 4 P 0 4.258 56.25 A 1066.502 I By BMS 401(k) Plan Common Stock 2011-01-03 4 P 0 3.824 62.30 A 1070.326 I By BMS 401(k) Plan Common Stock 2011-04-01 4 P 0 4.785 58.33 A 1075.111 I By BMS 401(k) Plan Common Stock 2011-07-01 4 P 0 4.09 69.04 A 1079.201 I By BMS 401(k) Plan Common Stock 2011-10-03 4 P 0 4.033 68.11 A 1083.234 I By BMS 401(k) Plan Common Stock 2011-12-20 4 J 0 1083.234 74.1859 D 0 I By BMS 401(k) Plan Common Stock 2012-01-03 4 P 0 3.947 71.35 A 3.947 I By BMS 401(k) Plan Common Stock 2012-01-03 4 J 0 3.947 71.35 D 0 I By BMS 401(k) Plan As previously reported, pursuant to the December 2009 exchange offer by Bristol-Myers Squibb Company ("BMS"), the reporting person received shares of common stock of Mead Johnson Nutrition Company ("MJN") in exchange for shares of BMS common stock that were validly tendered in the exchange offer and accepted for exchange by BMS. At the time of the exchange offer, BMS maintained (and continues to maintain) the Bristol-Myers Squibb Savings Plan (the "BMS Savings Plan"), a qualified plan. In connection with the exchange offer, participants in the BMS Savings Plan were given the opportunity to exchange a portion or all of their BMS Stock Fund balance within the BMS Savings Plan for shares of MJN common stock (to be held in a Mead Johnson Stock Fund within the BMS Savings Plan). The reporting person participated in the exchange and, as a result, invested in the Mead Johnson Stock Fund within the BMS Savings Plan. The acquisitons reported on this Form 4 were purchases of MJN common stock through dividend reinvestments in the Mead Johnson Stock Fund within the BMS Savings Plan. Prior to this transaction, the number of shares of MJN common stock held by the reporting person in the Mead Johnson Stock Fund was 1039.765 (previously reported as a whole share number (1039)). This Form 4 reflects both whole and fractional share ownership. Further, these shares were previously indicated to be invested through the MJN retirement savings plan. This Form 4 clarifies that these shares were held in the Mead Johnson Stock Fund within the BMS Savings Plan. In December 2011, BMS eliminated the Mead Johnson Stock Fund as an investment option and all shares of MJN common stock held in the Mead Johnson Stock Fund were liquidated. This mandatory liquidation caused each participant to have his Mead Johnson Stock Fund balance involuntarily sold as of December 20, 2011 at a price of $74.1859 per share. This transaction was the result of a fourth-quarter 2011 dividend paid on shares of MJN common stock, which dividend was allocated to the Mead Johnson Stock Fund in January 2012 and immediately liquidated. /s/ Eryk J. Spytek, Attorney-in-Fact 2012-09-14