AOS

SEC source: 0000091142-18-000019 · edgar.xml · derivative · entry 3

STERN JAMES F · CIK 0001399737 · Exec VP, General Counsel & Sec

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,675

Underlying: Common Stock · 5,930 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 5,930 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 5,930 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 5,930 shares of Common Stock to the reporting person.

F1 · derivative.expiration_date: 5,930 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 5,930 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 5,930 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000019 · edgar.xml · nonDerivative · entry 2

STERN JAMES F · CIK 0001399737 · Exec VP, General Counsel & Sec

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 149,338

SEC source: 0000091142-18-000019 · edgar.xml · nonDerivative · entry 1

STERN JAMES F · CIK 0001399737 · Exec VP, General Counsel & Sec

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 152,187

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 5,930 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 5,930 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 5,930 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000018 · edgar.xml · nonDerivative · entry 3

Rajendra Ajita G · CIK 0001315989 · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 301,018

SEC source: 0000091142-18-000018 · edgar.xml · nonDerivative · entry 2

Rajendra Ajita G · CIK 0001315989 · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 314,904

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: 29,500 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction excempt under Rule 16b-3. 29,500 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 29,500 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000017 · edgar.xml · nonDerivative · entry 2

Petrarca Mark A · CIK 0001310176 · Senior Vice Pres. - H.R. & P.A

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,950

SEC source: 0000091142-18-000017 · edgar.xml · nonDerivative · entry 1

Petrarca Mark A · CIK 0001310176 · Senior Vice Pres. - H.R. & P.A

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,119

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 4,470 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 4,470 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 4,470 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000016 · edgar.xml · nonDerivative · entry 2

Martineau Peter R · CIK 0001667767 · Senior Vice President - CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,213

SEC source: 0000091142-18-000016 · edgar.xml · nonDerivative · entry 1

Martineau Peter R · CIK 0001667767 · Senior Vice President - CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,865

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0000091142-18-000015 · edgar.xml · derivative · entry 3

Lauber Charles T · CIK 0001566398 · SVP, Strategy & Corporate Dev.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,165

Underlying: Common Stock · 1,950 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 1,950 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 1,950 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 1,950 shares of Common Stock to the reporting person.

F1 · derivative.expiration_date: 1,950 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 1,950 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 1,950 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000015 · edgar.xml · nonDerivative · entry 2

Lauber Charles T · CIK 0001566398 · SVP, Strategy & Corporate Dev.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,927

SEC source: 0000091142-18-000015 · edgar.xml · nonDerivative · entry 1

Lauber Charles T · CIK 0001566398 · SVP, Strategy & Corporate Dev.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,928

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 1,950 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 1,950 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 1,950 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000014 · edgar.xml · derivative · entry 4

KITA JOHN J · CIK 0001236636 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,755

Underlying: Common Stock · 8,130 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: 8,130 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction excempt under Rule 16b-3. 8,130 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 8,130 shares of Common Stock to the reporting person.

F2 · derivative.exercise_date: 8,130 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction excempt under Rule 16b-3. 8,130 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 8,130 shares of Common Stock to the reporting person.

F2 · derivative.expiration_date: 8,130 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction excempt under Rule 16b-3. 8,130 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 8,130 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000014 · edgar.xml · nonDerivative · entry 3

KITA JOHN J · CIK 0001236636 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,917

SEC source: 0000091142-18-000014 · edgar.xml · nonDerivative · entry 2

KITA JOHN J · CIK 0001236636 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 79,797

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: 8,130 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction excempt under Rule 16b-3. 8,130 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 8,130 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000013 · edgar.xml · derivative · entry 3

Kempken Daniel L · CIK 0001522653 · Vice President and Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,965

Underlying: Common Stock · 1,870 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 1,870 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 1,870 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 1,870 shares of Common Stock to the reporting person.

F1 · derivative.expiration_date: 1,870 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 1,870 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 1,870 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000013 · edgar.xml · nonDerivative · entry 2

Kempken Daniel L · CIK 0001522653 · Vice President and Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,196

F2 · balance_after: Mr. Kempken 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 8 shares of Common Stock.

SEC source: 0000091142-18-000013 · edgar.xml · nonDerivative · entry 1

Kempken Daniel L · CIK 0001522653 · Vice President and Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,890

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 1,870 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 1,870 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 1,870 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000012 · edgar.xml · derivative · entry 3

Heideman Robert J · CIK 0001507959 · Senior VP, CTO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,390

Underlying: Common Stock · 4,630 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 4,630 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction excempt under Rule 16b-3. 4,630 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 4,630 shares of Common Stock to the reporting person.

F1 · derivative.expiration_date: 4,630 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction excempt under Rule 16b-3. 4,630 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 4,630 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000012 · edgar.xml · nonDerivative · entry 2

Heideman Robert J · CIK 0001507959 · Senior VP, CTO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,566

SEC source: 0000091142-18-000012 · edgar.xml · nonDerivative · entry 1

Heideman Robert J · CIK 0001507959 · Senior VP, CTO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,815

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 4,630 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction excempt under Rule 16b-3. 4,630 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 4,630 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000011 · edgar.xml · derivative · entry 3

Ding Wei · CIK 0001566652 · President - A. O. Smith China

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,475

Underlying: Common Stock · 4,710 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 4,710 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 4,710 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 4,710 shares of Common Stock to the reporting person.

F1 · derivative.expiration_date: 4,710 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 4,710 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 4,710 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000011 · edgar.xml · nonDerivative · entry 2

Ding Wei · CIK 0001566652 · President - A. O. Smith China

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,853

F2 · balance_after: Mr. Ding 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 22 shares of Common Stock.

SEC source: 0000091142-18-000011 · edgar.xml · nonDerivative · entry 1

Ding Wei · CIK 0001566652 · President - A. O. Smith China

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,771

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 4,710 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 4,710 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 4,710 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000010 · edgar.xml · derivative · entry 3

Dana Paul R · CIK 0001639644 · VP, Global Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,660

Underlying: Common Stock · 1,870 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 1,870 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation PLan, a transaction exempt under Rule 16b-3. 1,870 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 1,870 shares of Common Stock to the reporting person.

F1 · derivative.expiration_date: 1,870 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation PLan, a transaction exempt under Rule 16b-3. 1,870 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 1,870 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000010 · edgar.xml · nonDerivative · entry 2

Dana Paul R · CIK 0001639644 · VP, Global Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,811

SEC source: 0000091142-18-000010 · edgar.xml · nonDerivative · entry 1

Dana Paul R · CIK 0001639644 · VP, Global Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,630

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0000091142-18-000009 · edgar.xml · derivative · entry 3

BROUWER WILFRIDUS M · CIK 0001464950 · President - AOSHBSRL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,760

Underlying: Common Stock · 3,010 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 3,010 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 3,010 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 3,010 shares of Common Stock to the reporting person.

F1 · derivative.expiration_date: 3,010 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 3,010 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 3,010 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000009 · edgar.xml · nonDerivative · entry 2

BROUWER WILFRIDUS M · CIK 0001464950 · President - AOSHBSRL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,624

F2 · balance_after: Mr. Brouwer 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 16 shares of Common Stock.

SEC source: 0000091142-18-000009 · edgar.xml · nonDerivative · entry 1

BROUWER WILFRIDUS M · CIK 0001464950 · President - AOSHBSRL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,190

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 3,010 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 3,010 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 3,010 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000022 · edgar.xml · derivative · entry 3

Wheeler Kevin J. · CIK 0001566416 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,335

Underlying: Common Stock · 5,360 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: 5,360 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 5,360 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 5,360 shares of Common Stock to the reporting person.

F2 · derivative.expiration_date: 5,360 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 5,360 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 5,360 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000018 · edgar.xml · derivative · entry 5

Rajendra Ajita G · CIK 0001315989 · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,565

Underlying: Common Stock · 29,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: 29,500 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction excempt under Rule 16b-3. 29,500 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 29,500 shares of Common Stock to the reporting person.

F2 · derivative.expiration_date: 29,500 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction excempt under Rule 16b-3. 29,500 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 29,500 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000018 · edgar.xml · nonDerivative · entry 1

Rajendra Ajita G · CIK 0001315989 · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 285,404

F1 · price: Gift

SEC source: 0000091142-18-000017 · edgar.xml · derivative · entry 3

Petrarca Mark A · CIK 0001310176 · Senior Vice Pres. - H.R. & P.A

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,180

Underlying: Common Stock · 4,470 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 4,470 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 4,470 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 4,470 shares of Common Stock to the reporting person.

F1 · derivative.expiration_date: 4,470 Restricted Stock Units were granted on 02/09/2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 4,470 Restricted Stock Units vested on 02/09/2018. As a result of vesting, the Company is obligated to deliver 4,470 shares of Common Stock to the reporting person.

SEC source: 0000091142-18-000016 · edgar.xml · derivative · entry 3

Martineau Peter R · CIK 0001667767 · Senior Vice President - CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,135

Underlying: Common · 1,460 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 1,460 Restricted Stock Units were granted on February 9, 2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 1,460 Restricted Stock Units vested on February 9, 2018. As a result of vesting, the Company is obligated to deliver 1,460 shares of Common Stock to the reporting Person.

F1 · derivative.expiration_date: 1,460 Restricted Stock Units were granted on February 9, 2015, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 1,460 Restricted Stock Units vested on February 9, 2018. As a result of vesting, the Company is obligated to deliver 1,460 shares of Common Stock to the reporting Person.

SEC source: 0000091142-18-000030 · edgar.xml · derivative · entry 4

SMITH MARK D · CIK 0001236626 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · In trust.

Disclosed balance after: 234,327

Underlying: Common Stock · 490 shares

Expires not disclosed

F2 · derivative.exercise_price: Gift.

F3 · derivative.exercise_date: Convertible at any time.

F4 · derivative.expiration_date: None.

F1 · ownership.nature: The reporting person beneficially owns the shares as settlor of a revocable family trust.

SEC source: 0000091142-18-000002 · edgar.xml · nonDerivative · entry 1

GREUBEL WILLIAM P · CIK 0001244813 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · price: The price in Column 4 is a weighted average price. The prices actually received ranged from $66.50 to $66.61. The reporting person has provided to the issuer, and will provide to any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range for all transactions reported on this Form 4 utilizing an average weighted price.

SEC source: 0000091142-18-000001 · edgar.xml · derivative · entry 2

GREUBEL WILLIAM P · CIK 0001244813 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,684

Underlying: Common Stock · 17,856 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: The Plan permits the participant to defer the receipt of the award. Mr Greubel's elected a deferral until 01/01/2014 with a distribution over five years.

F1 · derivative.exercise_date: The Plan permits the participant to defer the receipt of the award. Mr Greubel's elected a deferral until 01/01/2014 with a distribution over five years.

F1 · derivative.expiration_date: The Plan permits the participant to defer the receipt of the award. Mr Greubel's elected a deferral until 01/01/2014 with a distribution over five years.

F1 · derivative.underlying_shares: The Plan permits the participant to defer the receipt of the award. Mr Greubel's elected a deferral until 01/01/2014 with a distribution over five years.

F2 · balance_after: The Restricted Stock Units that William P. Greubel has deferred receive a quarterly dividend pursuant to a dividend reinvestment feature of the A. O. Smith Nonqualified Deferred Compensation Plan. The total amount of dividends received was 379 Restricted Stock Units.

SEC source: 0000091142-18-000001 · edgar.xml · nonDerivative · entry 1

GREUBEL WILLIAM P · CIK 0001244813 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,856

SEC source: 0000091142-18-000014 · edgar.xml · nonDerivative · entry 1

KITA JOHN J · CIK 0001236636 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,667

F1 · price: Gift

SEC source: 0000091142-18-000003 · edgar.xml · derivative · entry 6

SMITH BRUCE M · CIK 0001236625 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · In trust

Disclosed balance after: 452,401

Underlying: Common Stock · 748 shares

Expires not disclosed

F5 · derivative.exercise_price: Gift

F6 · derivative.exercise_date: Convertible at any time into Common Stock.

F7 · derivative.expiration_date: None.

F2 · ownership.nature: The reporting person beneficially owns these shares as settlor of a revocable family trust.

SEC source: 0000091142-17-000080 · edgar.xml · derivative · entry 5

BROUWER WILFRIDUS M · CIK 0001464950 · President - AOSHBSRL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,685

Underlying: Common Stock · 3,910 shares

Expires 2026-02-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: The employee stock options were granted on 02/08/2016 under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. The options became exercisable in three annual installments of 1/3 of the award starting on 02/08/2017.

SEC source: 0000091142-17-000080 · edgar.xml · derivative · entry 4

BROUWER WILFRIDUS M · CIK 0001464950 · President - AOSHBSRL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,595

Underlying: Common Stock · 3,734 shares

Expires 2024-02-10

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: The employee stock options were granted on 02/10/2014 under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. The options became exercisable in three annual installments of 1/3 of the award starting on 02/10/2015.

SEC source: 0000091142-17-000080 · edgar.xml · nonDerivative · entry 3

BROUWER WILFRIDUS M · CIK 0001464950 · President - AOSHBSRL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,164

SEC source: 0000091142-17-000080 · edgar.xml · nonDerivative · entry 2

BROUWER WILFRIDUS M · CIK 0001464950 · President - AOSHBSRL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,808

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0000091142-17-000080 · edgar.xml · nonDerivative · entry 1

BROUWER WILFRIDUS M · CIK 0001464950 · President - AOSHBSRL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,878

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0000091142-17-000079 · edgar.xml · nonDerivative · entry 4

Wheeler Kevin J. · CIK 0001566416 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,748

SEC source: 0000091142-18-000003 · edgar.xml · derivative · entry 5

SMITH BRUCE M · CIK 0001236625 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · In trust

Disclosed balance after: 453,149

Underlying: Common Stock · 450 shares

Expires not disclosed

F5 · derivative.exercise_price: Gift

F6 · derivative.exercise_date: Convertible at any time into Common Stock.

F7 · derivative.expiration_date: None.

F2 · ownership.nature: The reporting person beneficially owns these shares as settlor of a revocable family trust.

SEC source: 0000091142-17-000079 · edgar.xml · derivative · entry 6

Wheeler Kevin J. · CIK 0001566416 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,995

Underlying: Common · 16,000 shares

Expires 2023-02-11

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: The employee stock options were granted on 02/11/2013 under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. The options bec1me exercisable in three annual installments of 1/3 of the award starting on 02/11/2014.

SEC source: 0000091142-17-000079 · edgar.xml · derivative · entry 5

Wheeler Kevin J. · CIK 0001566416 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,995

Underlying: Common · 14,000 shares

Expires 2022-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: The employee stock options were granted on 02/13/2012 under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. The options bec1me exercisable in three annual installments of 1/3 of the award starting on 02/13/2013.