SMITH A O CORP — Director's Dealing 2007

Jul 23, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SMITH A O CORP (AOS)
CIK: 0000091142
Period of Report: 2007-07-20

Reporting Person: RETTLER STEVE W (Senior Vice President - CD)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-07-20	Common Stock	M	9650	$15.135	Acquired	16900	Direct
2007-07-20	Common Stock	S	100	$50.33	Disposed	16800	Direct
2007-07-20	Common Stock	S	100	$50.34	Disposed	16700	Direct
2007-07-20	Common Stock	S	100	$50.35	Disposed	16600	Direct
2007-07-20	Common Stock	S	100	$50.36	Disposed	16500	Direct
2007-07-20	Common Stock	S	300	$50.39	Disposed	16200	Direct
2007-07-20	Common Stock	S	100	$50.42	Disposed	16100	Direct
2007-07-20	Common Stock	S	200	$50.43	Disposed	15900	Direct
2007-07-20	Common Stock	S	300	$50.45	Disposed	15600	Direct
2007-07-20	Common Stock	S	200	$50.46	Disposed	15400	Direct
2007-07-20	Common Stock	S	500	$50.47	Disposed	14900	Direct
2007-07-20	Common Stock	S	100	$50.48	Disposed	14800	Direct
2007-07-20	Common Stock	S	100	$50.49	Disposed	14700	Direct
2007-07-20	Common Stock	S	1200	$50.50	Disposed	13500	Direct
2007-07-20	Common Stock	S	700	$50.51	Disposed	12800	Direct
2007-07-20	Common Stock	S	100	$50.52	Disposed	12700	Direct
2007-07-20	Common Stock	S	100	$50.57	Disposed	12600	Direct
2007-07-20	Common Stock	S	100	$50.62	Disposed	12500	Direct
2007-07-20	Common Stock	S	5000	$50.66	Disposed	7500	Direct
2007-07-20	Common Stock	S	50	$50.68	Disposed	7450	Direct
2007-07-20	Common Stock	S	200	$50.72	Disposed	7250	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2007-07-20	Employee Stock Options (Right to Buy)	$15.135	M	9650	Disposed	2011-10-09	Common Stock (9650)	Direct

Footnotes

F1: Granted on 10/09/2001 under the A. O. Smith Corporation Long-Term Executive Incentive Compensation Plan, a transaction exempt under Rule 16b-3.