Company: AOS
Filing Date: 2025-02-27
Form Type: DEF 14A
Source: 0001193125-25-037641
Chunk: 59

Company: SMITH A O CORP
Filing Date: 2025-02-27
Form: DEF 14A
Chunk 59
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’Brien |     |                                           |      0 |     |                   |       0 |     |                                          |  3,455 |     |                                |   276,314 |
| Mark A. Petrarca   |     |                                           |      0 |     |                   |       0 |     |                                          |  3,420 |     |                                |   274,541 |

| 1 | Based on NYSE closing price of the Common Stock on the vesting date. |

Pension Benefits

| Name             |     | Plan Name                           |     | Number of Years Credited Service 
                              (#) |     | Present Value of Accumulated Benefit ($) |            |     | Payments During Last Fiscal Year ($) |
| James F. Stern   |     | Executive Supplemental Pension Plan |     |                            16.59 |     |                                          | $3,258,485 |     |                                   $0 |
| Mark A. Petrarca |     | Executive Supplemental Pension Plan |     |                            24.57 |     |                                          |  4,021,305 |     |                                    0 |

Executive retirement benefits are provided in one of two ways, depending on when the executive became eligible. Executives hired or promoted to a qualifying position after July 2010 participate in the defined contribution component under the A. O. Smith Non-qualifiedDeferred Compensation Plan that provides an annual contribution of 3% of pay (base salary plus annual bonus) based on compensation above the Internal Revenue Code limit that applies to qualified retirement plans. Messrs. Wheeler, Lauber, Shafer and O’Brien participate in this defined contribution restoration component. Executives hired or promoted into a qualifying executive position prior to July 2010, are covered by the A. O. Smith Corporation Executive Supplemental Pension Plan, a non-qualifiedsupplemental executive retirement plan. This plan was intended to supplement a defined benefit plan that was closed to new entrants in 2010, stopped accruing benefits in 2014, and terminated in 2021. Mr. Stern is the only remaining active participant in the Executive Supplemental Pension Plan. Mr. Petraca retired in September 2024 and will receive his benefit in March 2025. 46 A. O. Smith Corporation

Executive Compensation The Executive Supplemental Pension Plan provides a benefit equivalent to 1.65% of the executive’s five-year final average pay times years of credited service up to a 40-yearmaximum