SMITH A O CORP — Director's Dealing 2010

Apr 14, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SMITH A O CORP (AOS)
CIK: 0000091142
Period of Report: 2010-04-12

Reporting Person: SMITH BRUCE M (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-04-12	Phantom Stock	$54.52	A	1651	Acquired		Common Stock (1651)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2649	Direct
Common Stock	13511	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class A Common Stock	$0		Common Stock (0)	78108	Indirect

Footnotes

F1: Shares deferred under the A. O. Smith Corporation Directors' Deferred Compensation Plan.

F2: The reporting person beneficially owns these shares as settlor of a revocable family trust.

F3: Payment of portion of retainer in phantom stock under the A. O. Smith Corporation Directors' Deferred Compensation Plan.

F4: The Plan permits the participant/recipient to defer receipt of the award, and Mr. Smith has made a deferral.

F5: 1 for 1

F6: Convertible at any time.

F7: None.