Company: AOS
Filing Date: 2025-06-30
Form Type: 11-K
Source: 0000091142-25-000086
Chunk: 2

Company: SMITH A O CORP
Filing Date: 2025-06-30
Form: 11-K
Chunk 2
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#### Supplemental Information
The supplemental information contained in schedule of assets (held at end of year) has been subjected to audit procedures performed in conjunction with the audit of the Plan's financial statements. The supplemental information is the responsibility of the Plan's management. Our audit procedures included determining whether the supplemental information reconciles to the financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the information presented in the supplemental information. In forming our opinion on the supplemental information, we evaluated whether the supplemental information, including its form and content, is presented in conformity with the Department of Labor's Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. In our opinion, the supplemental information is fairly stated, in all material respects, in relation to the financial statements as a whole.

/s/ Reilly, Penner & Benton LLP

We have served as the Company’s auditor since 1993

June 30, 2025

Milwaukee, Wisconsin

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#### A. O. SMITH

### RETIREMENT SECURITY PLAN

#### Statements of Net Assets Available for Benefits

#### December 31, 2024 and 2023
| Assets:                                                            |     | 2024 |             |     | 2023 |             |
|:-------------------------------------------------------------------|:----|:-----|------------:|:----|:-----|------------:|
| Investments at Fair Value                                          |     | $    |   2,627,180 |     | $    |   2,465,094 |
| Plan interest in A.O. Smith Corporation Master Trust at Fair Value |     |      | 594,940,751 |     |      | 563,119,347 |
| Total investments                                                  |     |      | 597,567,931 |     |      | 565,584,441 |
| Receivables:                                                       |     |      |             |     |      |             |
| Notes receivable from participants                                 |     |      |  10,431,569 |     |      |   9,710,819 |
| Company contributions                                              |     |      |   9,232,039 |     |      |   7,433,788 |
| Participant contributions                                          |     |      |     471,768 |     |      |           — |
| Total receivables                                                  |     |      |