|  |  |  |
|--|--|--|
|  |

|                                                               |  |                                     |  |  |  |  |  |  |
|---------------------------------------------------------------|--|-------------------------------------|--|--|--|--|--|--|
| Delaware                                                      |  | 39-0619790                          |
| (State or other jurisdiction ofincorporation or organization) |  | (I.R.S. EmployerIdentification No.) |
|                                                               |  |                                     |
| 11270 West Park PlaceMilwaukee, Wisconsin                     |  | 53224-9508                          |
| (Address of principal executive offices)                      |  | (Zip Code)                          |

|                                                         |  |                            |  |  |  |  |  |  |
|---------------------------------------------------------|--|----------------------------|--|--|--|--|--|--|
| James F. Stern, Esq.                                    |  |                            |
| Executive Vice President, General Counsel and Secretary |  | Patrick G. Quick, Esq.     |
| A. O. Smith Corporation                                 |  | Foley & Lardner LLP    |
| 11270 West Park Place                                   |  | 777 East Wisconsin Avenue  |
| Milwaukee, Wisconsin 53224-9508                         |  | Milwaukee, Wisconsin 53202 |
| (414) 359-4000                                          |  | (414) 271-2400             |
| (Name, address and telephone number,                    |  |                            |
| including area code, of agent for service)              |  |                            |

|  |  |  |
|--|--|--|
|  |

----

----

|                |                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |  |  |  |
|----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--|--|--|--|
| Exhibit Number | Description                                                                                                                                                                                                                                                                                                                                                                                                                            |
| (4.1)          | A. O. Smith Combined Incentive Compensation Plan, incorporated by reference to Exhibit A of the Proxy Statement filed on March 6, 2020 for the 2020 Annual Meeting of Stockholders.                                                                                                                                                                                                                                               |
|                |                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| (4.2)          | Restated Certificate of Incorporation of A. O. Smith Corporation as amended through April 11, 2016, incorporated by reference to Exhibit 3i(b) in the quarterly report on Form 10-Q for the quarter ended March 31, 2016.                                                                                                                                                                                     |
|                |                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| (4.3)          | By-laws of A. O. Smith Corporation as amended October 10, 2019, incorporated by reference to Exhibit 3.1 in the current report on Form 8-K dated October 16, 2019.                                                                                                                                                                                                                                                           |
|                |                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| (4.5)          | Amended and Restated Credit Agreement, dated as of December 12, 2012, among A. O. Smith Corporation, A. O. Smith Enterprises Ltd., A. O. Smith International Holdings B.V., and the financial institutions and agents party thereto, incorporated by reference to Exhibit 4.1 in the current report on Form 8-K dated December 12, 2012.                                                                           |
|                |                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| (4.6)          | Amendment No. 1 dated as of December 15, 2016, to the Amended and Restated Credit Agreement, dated as of December 12, 2012, among A. O. Smith Corporation, A. O Smith Enterprises Ltd., A. O. Smith International Holdings B.V., and the financial institutions and agents party thereto, incorporated by reference to Exhibit 4(c) in the annual report on Form 10-K for the fiscal year ended December 31, 2016. |
|                |                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| (4.7)          | Amendment No. 2 dated as of April 1, 2021, to the Amended and Restated Credit Agreement, dated as of December 12, 2012, among A. O. Smith Corporation, A. O Smith Enterprises Ltd., A. O. Smith International Holdings B.V., and the financial institutions and agents party thereto, incorporated by reference to Exhibit 10.1 in the quarterly report on Form 10-Q for the quarter ended March 31, 2021.                             |
|                |                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| (4.8)          | Amendment No. 3 dated as of May 1, 2023, to the Amended and Restated Credit Agreement, dated as of December 12, 2012, among A. O. Smith Corporation, A. O Smith Enterprises Ltd., A. O. Smith International Holdings B.V., and the financial institutions and agents party thereto, incorporated by reference to Exhibit 10.1 in the quarterly report on Form 10-Q for the quarter ended September 30, 2023.                           |
|                |                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|                |                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| (4.9)          | A. O. Smith Corporation Executive Incentive Compensation Award Agreement (Acceptance Certificates and Terms and Conditions) incorporated by reference to exhibit 10(k) of the annual report on Form 10-K for the fiscal year ended December 31, 2022 (for grants after February 2023).                                                                                                                                                 |
|                |                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| (5)            | Opinion of James F. Stern                                                                                                                                                                                                                                                                                                                                                                                                              |
|                |                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| (23.1)         | Consent of Ernst & Young LLP.                                                                                                                                                                                                                                                                                                                                                                                                      |
|                |                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| (23.2)         | Consent of James F. Stern (contained in Exhibit (5)).                                                                                                                                                                                                                                                                                                                                                                                  |
|                |                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| (24)           | Power of Attorney (contained on the signature page hereto).                                                                                                                                                                                                                                                                                                                                                                            |
|                |                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| (107)          | Filing Fee Table.                                                                                                                                                                                                                                                                                                                                                                                                                      |

----

|  |         |  |                                                      |  |  |  |  |  |  |  |  |
|--|---------|--|------------------------------------------------------|--|--|--|--|--|--|--|--|
|  |         |  | A. O. SMITH CORPORATION                              |
|  |         |  |                                                      |
|  | By: |  | /s/ Kevin J. Wheeler                         |
|  |         |  | Kevin J. WheelerChairman and Chief Executive Officer |

----

|                                                      |  |                                  |  |  |  |  |  |  |
|------------------------------------------------------|--|----------------------------------|--|--|--|--|--|--|
| Name and Title                                       |  | Signature                        |
|                                                      |  |                                  |
|                                                      |  |                                  |
| KEVIN J. WHEELER                                     |  | /s/ Kevin J. Wheeler     |
| Director                                             |  | Kevin J. Wheeler                 |
| Chairman and Chief Executive Officer                 |  |                                  |
|                                                      |  |                                  |
| CHARLES T. LAUBER                                    |  | /s/ Charles T. Lauber    |
| Executive Vice President and Chief Financial Officer |  | Charles T. Lauber                |
|                                                      |  |                                  |
| BENJAMIN A. OTCHERE                                  |  | /s/ Benjamin A. Otchere  |
| Vice President and Controller                        |  | Benjamin A. Otchere              |
|                                                      |  |                                  |
| RONALD D. BROWN                                      |  | /s/ Ronald D. Brown      |
| Director                                             |  | Ronald D. Brown                  |
|                                                      |  |                                  |
| VICTORIA M. HOLT                                     |  | /s/ Victoria M. Holt     |
| Director                                             |  | Victoria M. Holt                 |
|                                                      |  |                                  |
| DR. ILHAM KADRI                                      |  | /s/ Dr. Ilham Kadri |
| Director                                             |  | Dr. Ilham Kadri             |
|                                                      |  |                                  |
| MICHAEL M. LARSEN                                    |  | /s/ Michael M. Larsen    |
| Director                                             |  | Michael M. Larsen                |
|                                                      |  |                                  |
| CHRISTOPHER L. MAPES                                 |  | /s/ Christopher L. Mapes |
| Director                                             |  | Christopher L. Mapes             |
|                                                      |  |                                  |
| AJITA G. RAJENDRA                                    |  | /s/ Ajita G. Rajendra    |
| Director                                             |  | Ajita G. Rajendra                |
|                                                      |  |                                  |
| MARK D. SMITH                                        |  | /s/ Mark D. Smith        |
| Director                                             |  | Mark D. Smith                    |
|                                                      |  |                                  |
| IDELLE K. WOLF                                       |  | /s/ Idelle K. Wolf       |
| Director                                             |  | Idelle K. Wolf                   |