Company: AOS
Filing Date: 2025-06-30
Form Type: 11-K
Source: 0000091142-25-000086
Chunk: 3

Company: SMITH A O CORP
Filing Date: 2025-06-30
Form: 11-K
Chunk 3
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 20,135,376 |     |      |  17,144,607 |
| Net assets available for benefits                                  |     | $    | 617,703,307 |     | $    | 582,729,048 |

<div align='center'>The accompanying notes to the financial statements

are an integral part of this statement

6</div>

#### A. O. SMITH

### RETIREMENT SECURITY PLAN
<div align='center'>Statements of Changes in Net Assets Available for Benefits</div>

#### Years Ended December 31, 2024 and 2023
| Increases (Decreases):                                                  |     | 2024 |             |             |     | 2023 |             |             |
|:------------------------------------------------------------------------|:----|:-----|------------:|------------:|:----|:-----|------------:|------------:|
| Change in plan interest in A.O. Smith Corporation Master Trust (Note 2) |     | $    |             |  55,850,152 |     | $    |             |  75,453,214 |
| Net appreciation in fair value of investments                           |     |      |             |      76,127 |     |      |             |      61,787 |
| Interest and dividends                                                  |     |      |             |      85,959 |     |      |             |      45,674 |
| Interest income from participant loans                                  |     |      |             |     645,023 |     |      |             |     470,757 |
| Net income                                                              |     |      |  56,657,261 |             |     |      |  76,031,432 |             |
| Contributions:                                                          |     |      |             |             |     |      |             |             |
| Company                                                                 |     |      |             |  18,702,406 |     |      |             |  16,687,574 |
| Participants                                                            |     |      |             |  24,919,997 |     |      |             |  23,425,774 |
| Rollovers                                                               |     |      |   1,900,050 |             |     |      |   3,748,857 |             |
| Total contributions                                                     |     |      |             |  45,522,453 |     |      |             |  43,862,205 |
| Total