Company: AOS
Filing Date: 2025-02-27
Form Type: DEF 14A
Source: 0001193125-25-037641
Chunk: 1

Company: SMITH A O CORP
Filing Date: 2025-02-27
Form: DEF 14A
Chunk 1
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 West Park Place, Milwaukee, Wisconsin, as of March 28, 2025, for examination by stockholders. All stockholders must pre-registerto attend the Annual Meeting of Stockholders of A. O. Smith Corporation. To pre-register,please contact us by email at jstern@aosmith.com or by telephone at 414-359-4000and provide your name, address, telephone number and indicate that you plan to attend the Annual Meeting. We will respond to all pre-registrationrequests and will maintain a list of verified stockholders at the Annual Meeting. In addition to ownership confirmation, you mustalso present a government-issued photo identification showing your name, address and signature for admission. Annual Meeting pre-registrationrequests must be received by the end of business on Friday, April 4, 2025. By Order of the Board of Directors, James F. Stern Executive Vice President, General Counsel and Secretary A. O. Smith Corporation 11270 West Park Place Milwaukee, WI 53224

| Meeting Information |     | Date: Tuesday, April 8, 2025                                                                |
|:--------------------|:----|:--------------------------------------------------------------------------------------------|
|                     |     | Time: 8:00 a.m. (EDT)                                                                       |
|                     |     | Place: National Association of Manufacturers 733 10th Street NW, Suite 700 Washington, D.C. |

Whether or not you plan to attend the meeting, we encourage you to vote your shares. You may vote your shares over the Internet, as we describe in the accompanying materials and the Important Notice Regarding the Availability of Proxy Materials. As an alternative, if you received a paper copy of the Proxy Card by mail, you may sign, date and mail the Proxy Card in the envelope provided or use the toll-free telephone number on the Proxy Card. No postage is necessary if mailed in the United States. Voting over the Internet, voting via the toll-free telephone number or mailing a Proxy Card will not limit your right to attend and vote at the Annual Meeting. IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE STOCKHOLDERS’ MEETING TO BE HELD ON APRIL 8, 2025: The Notice of 2025 Annual Meeting of Stockholders, this Proxy Statement and our 2024 Annual Report are also available at www.proxydocs.com/aos.

PROXY STATEMENT FOR 2025 ANNUAL MEETING TABLE OF CONTENTS

| GENERAL INFORMATION                                           |     |