Company: AOS
Filing Date: 2025-02-27
Form Type: DEF 14A
Source: 0001193125-25-037641
Chunk: 86

Company: SMITH A O CORP
Filing Date: 2025-02-27
Form: DEF 14A
Chunk 86
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 the 12th Street exit. Once on 12th Street proceed 1.5 miles (across the National Mall) and take a right turn on to H Street, NW. Once on H Street proceed two blocks and take a right turn onto 10th Street, NW. Proceed half a block and National Association of Manufacturers building will be on your left. |

|                                        | Shareowner Services |     |                                                                                                                                                        |
| P.O. Box 64945 St. Paul, MN 55164-0945 |                     |     |                                                                                                                                                        |
|                                        |                     |     | Vote by Internet, Telephone or Mail 24 Hours a Day, 7 Days a Week                                                                                      |
|                                        |                     |     | Please have available the Control Number located at the top of this page.                                                                              |
|                                        |                     |     | Your phone or Internet vote authorizes the named proxies to vote your shares in the same manner as if you marked, signed and returned your Proxy Card. |

| INTERNET/MOBILE – www.proxypush.com/aos Use the Internet to vote your proxy until 11:59 p.m. (EDT) on April 7, 2025.                                                                                                                                    
 PHONE – 1-866-883-3382 Use a touch-tone telephone to vote your proxy until 11:59 p.m. (EDT) on April 7, 2025.                                                                                                                                           |
|:--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| MAIL – Mark, sign and date your Proxy Card and return it in the postage-paid envelope provided or return it to A. O. SMITH CORPORATION, c/o Shareowner Services, P.O. Box 64873, St. Paul, MN 55164-0873. Your proxy must be received by April 7, 2025. |

<div align='center'>**IF YOU VOTE BY INTERNET OR TELEPHONE, PLEASE DO NOT MAIL YOUR PROXY CARD.

Detach here**</div>

#### A. O. SMITH CORPORATION 2025 ANNUAL MEETING

### PROXY - COMMON STOCK
This proxy when properly executed will be voted in the manner directed herein by the undersigned. If no direction is made, this proxy will be voted FOR proposals 1, 2 and 3, and AGAINST proposal 4.

| 1.                                                                                                                                               |     | Election of directors:                                                                                                                                            |     | 01 |     | Todd W. Fister    |     | 03 |