SMITH A O CORP — Director's Dealing 2007

Jan 29, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SMITH A O CORP (AOS)
CIK: 0000091142
Period of Report: 2007-01-25

Reporting Person: ROMOSER W DAVID (Senior VP, Gen. Counsel & Sec)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-01-25	Common Stock	M	2625	$29.0313	Acquired	59162	Direct
2007-01-25	Common Stock	M	8725	$13.563	Acquired	67887	Direct
2007-01-25	Common Stock	M	8050	$15.135	Acquired	75937	Direct
2007-01-25	Common Stock	M	4675	$26.88	Acquired	80612	Direct
2007-01-25	Common Stock	M	4475	$28.70	Acquired	85087	Direct
2007-01-25	Common Stock	S	200	$38.05	Disposed	84887	Direct
2007-01-25	Common Stock	S	100	$38.06	Disposed	84787	Direct
2007-01-25	Common Stock	S	600	$38.07	Disposed	84187	Direct
2007-01-25	Common Stock	S	2400	$38.08	Disposed	81787	Direct
2007-01-25	Common Stock	S	300	$38.09	Disposed	81487	Direct
2007-01-25	Common Stock	S	2500	$38.10	Disposed	78987	Direct
2007-01-25	Common Stock	S	3100	$38.12	Disposed	75887	Direct
2007-01-25	Common Stock	S	100	$38.13	Disposed	75787	Direct
2007-01-25	Common Stock	S	800	$38.14	Disposed	74987	Direct
2007-01-25	Common Stock	S	5000	$38.15	Disposed	69987	Direct
2007-01-25	Common Stock	S	1800	$38.16	Disposed	68187	Direct
2007-01-25	Common Stock	S	400	$38.17	Disposed	67787	Direct
2007-01-25	Common Stock	S	800	$38.18	Disposed	66987	Direct
2007-01-25	Common Stock	S	300	$38.19	Disposed	66687	Direct
2007-01-25	Common Stock	S	3400	$38.20	Disposed	63287	Direct
2007-01-25	Common Stock	S	800	$38.21	Disposed	62487	Direct
2007-01-25	Common Stock	S	500	$38.23	Disposed	61987	Direct
2007-01-25	Common Stock	S	400	$38.231	Disposed	61587	Direct
2007-01-25	Common Stock	S	100	$38.24	Disposed	61487	Direct
2007-01-25	Common Stock	S	1730	$38.25	Disposed	59757	Direct
2007-01-25	Common Stock	S	870	$38.26	Disposed	58887	Direct
2007-01-25	Common Stock	S	700	$38.27	Disposed	58187	Direct
2007-01-25	Common Stock	S	1100	$38.28	Disposed	57087	Direct
2007-01-25	Common Stock	S	100	$38.30	Disposed	56987	Direct
2007-01-25	Common Stock	S	300	$38.31	Disposed	56687	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2007-01-25	Employee Stock Options (Right to Buy)	$29.0313	M	2625	Disposed	2009-10-13	Common Stock (2625)	Direct
2007-01-25	Employee Stock Options (Right to Buy)	$13.563	M	8725	Disposed	2010-10-10	Common Stock (8725)	Direct
2007-01-25	Employee Stock Options (Right to Buy)	$15.135	M	8050	Disposed	2011-10-09	Common Stock (8050)	Direct
2007-01-25	Employee Stock Options (Right to Buy)	$26.88	M	4675	Disposed	2012-10-11	Common Stock (4675)	Direct
2007-01-25	Employee Stock Options (Right to Buy)	$28.70	M	4475	Disposed	2013-10-07	Common Stock (4475)	Direct

Footnotes

F1: The exercises reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 10, 2006.

F2: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 10, 2006.

F3: Granted on October 13, 1999, under the A. O. Smith Corporation Long-Term Executive Incentive Compensation Plan, a Rule 16b-3 Plan.

F4: Granted on October 10, 2000, under the A. O. Smith Corporation Long-Term Executive Incentive Compensation Plan, a Rule 16b-3 Plan.

F5: Granted on October 9, 2001, under the A. O. Smith Corporation Long-Term Executive Incentive Compensation Plan, a Rule 16b-3 Plan.

F6: Granted on October 11, 2002, under the A. O. Smith Combined Executive Incentive Compensation Plan, a Rule 16b-3 Plan.

F7: Granted on October 7, 2003, under the A. O. Smith Combined Executive Incentive Compensation Plan, a Rule 16b-3 Plan.