SMITH A O CORP — Director's Dealing 2012

Jul 23, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SMITH A O CORP (AOS)
CIK: 0000091142
Period of Report: 2012-07-20

Reporting Person: Petrarca Mark A (Senior Vice Pres. - H.R. & P.A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-07-20	Common Stock	M	22050	$19.003	Acquired	46172	Direct
2012-07-20	Common Stock	S	5500	$51.00	Disposed	40672	Direct
2012-07-20	Common Stock	S	4612	$51.01	Disposed	36060	Direct
2012-07-20	Common Stock	S	2638	$51.02	Disposed	33422	Direct
2012-07-20	Common Stock	S	1200	$51.03	Disposed	32222	Direct
2012-07-20	Common Stock	S	1400	$51.04	Disposed	30822	Direct
2012-07-20	Common Stock	S	1500	$51.05	Disposed	29322	Direct
2012-07-20	Common Stock	S	700	$51.06	Disposed	28622	Direct
2012-07-20	Common Stock	S	800	$51.07	Disposed	27822	Direct
2012-07-20	Common Stock	S	100	$51.08	Disposed	27722	Direct
2012-07-20	Common Stock	S	300	$51.09	Disposed	27422	Direct
2012-07-20	Common Stock	S	100	$51.0902	Disposed	27322	Direct
2012-07-20	Common Stock	S	200	$51.10	Disposed	27122	Direct
2012-07-20	Common Stock	S	500	$51.11	Disposed	26622	Direct
2012-07-20	Common Stock	S	300	$51.12	Disposed	26322	Direct
2012-07-20	Common Stock	S	500	$51.13	Disposed	25822	Direct
2012-07-20	Common Stock	S	100	$51.14	Disposed	25722	Direct
2012-07-20	Common Stock	S	100	$51.15	Disposed	25622	Direct
2012-07-20	Common Stock	S	100	$51.18	Disposed	25522	Direct
2012-07-20	Common Stock	S	100	$51.20	Disposed	25422	Direct
2012-07-20	Common Stock	S	300	$51.21	Disposed	25122	Direct
2012-07-20	Common Stock	S	100	$51.22	Disposed	25022	Direct
2012-07-20	Common Stock	S	200	$51.24	Disposed	24822	Direct
2012-07-20	Common Stock	S	100	$51.25	Disposed	24722	Direct
2012-07-20	Common Stock	S	100	$51.31	Disposed	24622	Direct
2012-07-20	Common Stock	S	300	$51.32	Disposed	24322	Direct
2012-07-20	Common Stock	S	200	$51.33	Disposed	24122	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-07-20	Employee Stock Options (Right to Buy)	$19.003	M	22050	Disposed	2019-02-09	Common Stock (22050)	Direct

Footnotes

F1: The employee stock options wre granted on 02/09/2009 under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. The options become exerciable in three annual installments of 1/3 of the award starting on 02/09/2010.