SMITH A O CORP - Director's Dealing 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SMITH A O CORP (AOS)
CIK: 0000091142
Period of Report: 2011-02-10

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

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-02-10	Common Stock	S	1000	$41.97	Disposed	30936	Direct
2011-02-10	Common Stock	S	700	$41.98	Disposed	30236	Direct
2011-02-10	Common Stock	S	600	$41.99	Disposed	29636	Direct
2011-02-10	Common Stock	S	300	$42.00	Disposed	29336	Direct
2011-02-10	Common Stock	S	2692	$42.01	Disposed	26644	Direct
2011-02-10	Common Stock	S	500	$42.02	Disposed	26144	Direct
2011-02-10	Common Stock	S	1350	$42.03	Disposed	24794	Direct
2011-02-10	Common Stock	S	1150	$42.04	Disposed	23644	Direct
2011-02-10	Common Stock	S	1360	$42.05	Disposed	22284	Direct
2011-02-10	Common Stock	S	200	$42.055	Disposed	22084	Direct
2011-02-10	Common Stock	S	1600	$42.06	Disposed	20484	Direct
2011-02-10	Common Stock	S	600	$42.07	Disposed	19884	Direct
2011-02-10	Common Stock	S	600	$42.08	Disposed	19284	Direct
2011-02-10	Common Stock	S	500	$42.09	Disposed	18784	Direct
2011-02-10	Common Stock	S	300	$42.10	Disposed	18484	Direct
2011-02-10	Common Stock	S	1100	$42.11	Disposed	17384	Direct
2011-02-10	Common Stock	S	204	$42.12	Disposed	17180	Direct
2011-02-10	Common Stock	S	700	$42.13	Disposed	16480	Direct
2011-02-10	Common Stock	S	800	$42.14	Disposed	15680	Direct
2011-02-10	Common Stock	S	200	$42.16	Disposed	15480	Direct
2011-02-10	Common Stock	S	100	$42.17	Disposed	15380	Direct
2011-02-10	Common Stock	S	200	$42.18	Disposed	15180	Direct
2011-02-10	Common Stock	S	100	$42.19	Disposed	15080	Direct
2011-02-10	Common Stock	S	100	$42.20	Disposed	14980	Direct
2011-02-10	Common Stock	S	200	$42.21	Disposed	14780	Direct
2011-02-10	Common Stock	S	200	$42.22	Disposed	14580	Direct