X0305 4 2012-05-03 0000032604 EMERSON ELECTRIC CO EMR 0001185213 BUSCH AUGUST A III 1 MID RIVERS MALL DRIVE SUITE 210 ST. PETERS MO 63376 1 0 0 0 Common Stock 2012-05-03 4 P 0 10100 49.2999 A 245187 D Common Stock 600 I Trust Common Stock 600 I Trust The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $49.28 to $49.3150. The reporting person undertakes to provide Emerson Electric Co., any security holder of Emerson Electric Co., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote. Co-Trustee and beneficiary of Trust U/W Elizabeth O. Busch dated 11/23/55 F/B/O August A. Busch III. Trustee of Trust U/W Elizabeth O. Busch dated 11/23/55 F/B/O Elizabeth B. Burke. Beneficial ownership of these shares is disclaimed. /s/ Timothy G. Westman, Attorney-in-Fact for August A. Busch III 2012-05-07