SMITH A O CORP — Director's Dealing 2011

Feb 11, 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: KITA JOHN J (Senior V.P., Corp. Fin. & Cont)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-02-10	Common Stock	M	16050	$19.133	Acquired	32600	Direct
2011-02-10	Common Stock	M	6750	$16.427	Acquired	39350	Direct
2011-02-10	Common Stock	S	400	$41.50	Disposed	38950	Direct
2011-02-10	Common Stock	S	100	$41.51	Disposed	38850	Direct
2011-02-10	Common Stock	S	1100	$41.54	Disposed	37750	Direct
2011-02-10	Common Stock	S	300	$41.58	Disposed	37450	Direct
2011-02-10	Common Stock	S	300	$41.59	Disposed	37150	Direct
2011-02-10	Common Stock	S	100	$41.61	Disposed	37050	Direct
2011-02-10	Common Stock	S	100	$41.63	Disposed	36950	Direct
2011-02-10	Common Stock	S	1000	$41.65	Disposed	35950	Direct
2011-02-10	Common Stock	S	400	$41.66	Disposed	35550	Direct
2011-02-10	Common Stock	S	400	$41.67	Disposed	35150	Direct
2011-02-10	Common Stock	S	1300	$41.68	Disposed	33850	Direct
2011-02-10	Common Stock	S	800	$41.69	Disposed	33050	Direct
2011-02-10	Common Stock	S	2000	$41.70	Disposed	31050	Direct
2011-02-10	Common Stock	S	1100	$41.71	Disposed	29950	Direct
2011-02-10	Common Stock	S	400	$41.72	Disposed	29550	Direct
2011-02-10	Common Stock	S	500	$41.74	Disposed	29050	Direct
2011-02-10	Common Stock	S	500	$41.75	Disposed	28550	Direct
2011-02-10	Common Stock	S	700	$41.76	Disposed	27850	Direct
2011-02-10	Common Stock	S	600	$41.77	Disposed	27250	Direct
2011-02-10	Common Stock	S	800	$41.78	Disposed	26450	Direct
2011-02-10	Common Stock	S	100	$41.79	Disposed	26350	Direct
2011-02-10	Common Stock	S	600	$41.80	Disposed	25750	Direct
2011-02-10	Common Stock	S	300	$41.81	Disposed	25450	Direct
2011-02-10	Common Stock	S	900	$41.82	Disposed	24550	Direct
2011-02-10	Common Stock	S	300	$41.83	Disposed	24250	Direct
2011-02-10	Common Stock	S	200	$41.84	Disposed	24050	Direct
2011-02-10	Common Stock	S	600	$41.85	Disposed	23450	Direct
2011-02-10	Common Stock	S	500	$41.86	Disposed	22950	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-02-10	Employee Stock Options (Right to Buy)	$19.133	M	16050	Disposed	2013-10-07	Common Stock (16050)	Direct
2011-02-10	Employee Stock Options (Right to Buy)	$16.427	M	6750	Disposed	2014-10-12	Common Stock (6750)	Direct

Footnotes

F1: The employee stock options were granted on 10/07/2003, under the A. O. Smith Combined Executive Incentive Compensation Plan, a transaction exempt under rule 16b-3.

F2: The employee stock options were granted on 10/12/2004, under the A. O. Smith Combined Executive Incentive Compensation Plan, a transaction exempt under rule 16b-3.