SMITH A O CORP — Director's Dealing 2011

Feb 15, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SMITH A O CORP (AOS)
CIK: 0000091142
Period of Report: 2011-02-11

Reporting Person: JONES PAUL W (Director, Chair, Pres. and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-02-11	Common Stock	M	61200	$23.523	Acquired	172675	Direct
2011-02-11	Common Stock	S	200	$41.51	Disposed	172475	Direct
2011-02-11	Common Stock	S	700	$41.52	Disposed	171775	Direct
2011-02-11	Common Stock	S	200	$41.53	Disposed	171575	Direct
2011-02-11	Common Stock	S	1	$41.56	Disposed	171574	Direct
2011-02-11	Common Stock	S	200	$41.595	Disposed	171374	Direct
2011-02-11	Common Stock	S	2900	$41.60	Disposed	168474	Direct
2011-02-11	Common Stock	S	6200	$41.61	Disposed	162274	Direct
2011-02-11	Common Stock	S	3000	$41.62	Disposed	159274	Direct
2011-02-11	Common Stock	S	22	$41.625	Disposed	159252	Direct
2011-02-11	Common Stock	S	4481	$41.63	Disposed	154771	Direct
2011-02-11	Common Stock	S	95	$41.635	Disposed	154676	Direct
2011-02-11	Common Stock	S	102	$41.64	Disposed	154574	Direct
2011-02-11	Common Stock	S	4896	$41.65	Disposed	149678	Direct
2011-02-11	Common Stock	S	3404	$41.66	Disposed	146274	Direct
2011-02-11	Common Stock	S	3862	$41.67	Disposed	142412	Direct
2011-02-11	Common Stock	S	500	$41.68	Disposed	141912	Direct
2011-02-11	Common Stock	S	300	$41.69	Disposed	141612	Direct
2011-02-11	Common Stock	S	98	$41.70	Disposed	141514	Direct
2011-02-11	Common Stock	S	1	$41.705	Disposed	141513	Direct
2011-02-11	Common Stock	S	1000	$41.71	Disposed	140513	Direct
2011-02-11	Common Stock	S	200	$41.72	Disposed	140313	Direct
2011-02-11	Common Stock	S	101	$41.73	Disposed	140212	Direct
2011-02-11	Common Stock	S	75	$41.735	Disposed	140137	Direct
2011-02-11	Common Stock	S	25	$41.74	Disposed	140112	Direct
2011-02-11	Common Stock	S	1	$41.75	Disposed	140111	Direct
2011-02-11	Common Stock	S	100	$41.76	Disposed	140011	Direct
2011-02-11	Common Stock	S	200	$41.77	Disposed	139811	Direct
2011-02-11	Common Stock	S	100	$41.78	Disposed	139711	Direct
2011-02-11	Common Stock	S	100	$41.79	Disposed	139611	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-02-11	Employee Stock Options (Right to Buy)	$23.523	M	61200	Disposed	2014-01-02	Common Stock (61200)	Direct

Footnotes

F1: The employee stock options were granted on 01/02/2004, under the A. O. Smith Combined Executive Incentive Compensation Plan, a transaction exempt under rule 16b-3.