X0202 4 2006-04-03 0000091142 SMITH A O CORP AOS 0001215484 WULF GENE C BEMIS COMPANY, INC. 134 E. WISCONSIN, ONE NEENAH CNTR 4TH FL MINNEAPOLIS MN 54402-4099 1 0 0 0 Common Stock 2006-04-03 4 A 0 373 53.64 A 2161 D Common Stock 50 I By Son Payment of portion of retainer in stock under the A. O. Smith Corporation Directors' Compensation Plan based on the market price of the Common Stock on April 3, 2006. The reporting person disclaims beneficial ownership of these secuirities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or any other purpose. W. David Romoser, Attorney-in-Fact for Gene C. Wulf 2006-04-04