SMITH A O CORP — Director's Dealing 2011

May 3, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SMITH A O CORP (AOS)
CIK: 0000091142
Period of Report: 2011-05-01

Reporting Person: KITA JOHN J (Executive Vice President & CFO)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-01	Employee Stock Options (Right to Buy)	$44.115	A	12000	Acquired	2021-05-01	Common Stock (12000)	Direct

Footnotes

F1: The employee stock options were granted on 05/01/2011, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under rule 16b-3. The options become exercisable in three annual installments of 1/3 of the award starting 05/01/2012.