X0306 4 2016-02-11 0000091142 SMITH A O CORP AOS 0001236631 BEDNAR RANDALL S A. O. SMITH CORPORATION 11270 WEST PARK PLACE MILWAUKEE WI 53224 0 1 0 0 Senior Vice President - CIO Common Stock 2016-02-11 4 M 0 2400 63.335 A 43058 D Common Stock 2016-02-12 4 S 0 1148 65.7635 D 41910 D Restricted Stock Units 63.335 2016-02-11 4 M 0 2400 A Common Stock 2400 4585 D 2,400 Restricted Stock Units were granted on 02/11/2013, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 2.400 Restricted Stock Units vested on 02/11/2016. As a result of vesting, the Company is obligated to deliver 2,400 shares of Common Stock to the reporting person. The reporting person sold these shares to obtain funds to pay the withholding taxes due as a result of the vesting of the restricted stock units described in footnote (1). James F. Stern, Attorney-in-Fact for Randall S. Bednar 2016-02-16