X0306 4 2019-02-08 0000091142 SMITH A O CORP AOS 0001566416 Wheeler Kevin J. A. O. SMITH CORPORATION 11270 WEST PARK PLACE MILWAUKEE WI 53224 0 1 0 0 President and CEO Common Stock 2019-02-08 4 A 0 5520 48.72 A 34225 D Common Stock 2019-02-08 4 F 0 2612 48.72 D 31613 D Restricted Stock Units 48.72 2019-02-08 4 M 0 5520 0 D Common Stock 5520 13610 D Restricted Stock Units 49.42 2019-02-11 4 A 0 17360 0 A Common Stock 17360 30970 D Employee Stock Options (Right to Buy) 49.42 2019-02-11 4 A 0 79240 0 A 2029-02-11 Common Stock 79240 196425 D 5,520 Restricted Stock Units were granted on 02/08/2016, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 5,520 Restricted Stock Units vested on 02/08/2019. As a result of vesting, the Company is obligated to deliver 5,520 shares of Common Stock to the reporting person. Mr. Wheeler is a participant in the A. O. Smith Dividend Reinvestment Plan ('Plan") and receives a quarterly dividend pursuant to the Plan. The total amount of dividends received was 139 shares of Common Stock. The restricted stock units were granted on 02/11/2019 under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. The restricted stock units become payable in Common Stock on the vesting date of 02/11/2022. The employee stock options were granted on 02/11/2019 under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. The options become exercisable in three annual installments of 1/3 of the award starting on 02/11/2020. James F. Stern, Attorney-in-Fact for Kevin J. Wheeler 2019-02-12