Company: AOS
Filing Date: 2025-03-12
Form Type: DEFA14A
Source: 0000091142-25-000049
Chunk: 1

Company: SMITH A O CORP
Filing Date: 2025-03-12
Form: DEFA14A
Chunk 1
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 as a director at the Annual Meeting that the Proxy Statement identified. Mr. Peace has withdrawn as a nominee, and the Board of Directors has chosen not to replace him with another nominee. Except as supplemented by the information contained in this Supplement, this Supplement does not revise or update any of the information set forth in the Proxy Statement. This Supplement should be read in conjunction with the Proxy Statement. From and after the date of this Supplement, any references to the “Proxy Statement” are to the Proxy Statement as supplemented hereby.

Withdrawal of Director Nominee and Related Matters

On March 7, 2025, Adrian I. Peace withdrew as a nominee for election by holders of Common Stock as a director at the Annual Meeting, and the Board of Directors has chosen not to replace him with another nominee. Accordingly, Mr. Peace will not stand for election as a director at the Annual Meeting.

Following Mr. Peace’s withdrawal as a Common Stock director nominee, the Board acted to reduce the size of the Board to nine members effective at the Annual Meeting. Owners of Common Stock are entitled to elect three directors at the Annual Meeting, and owners of Class A Common Stock are entitled to elect six directors. The other director nominees to be elected by holders of Common Stock as well as the Class A Common Stock director nominees named in the 2025 Proxy Statement will continue to stand for re-election as directors at the Annual Meeting. Although Mr. Peace has withdrawn as a Common Stock director nominee, the proxy card that we made available with the 2025 Proxy Statement remains valid. However, we will disregard any instructions from stockholders to vote for the election of Mr. Peace to the Board.

The Company had intended that, if elected as a director, Mr. Peace would serve as a member of the Audit Committee of the Board after the Annual Meeting. The Company now intends that Christopher L. Mapes, a current director and a current member of the Audit Committee, will continue to serve on the Audit Committee assuming that he is re-elected as a director at the Annual Meeting rather than serving as a member of the Personnel & Compensation Committee and the Nominating & Governance Committee as the Company had intended.

#### Additional Information Regarding Voting
We will not prepare a new proxy card or voting instruction form to omit Mr. Peace. If you have already returned your proxy or provided voting instructions, you do not need to take any action unless you wish to change your vote. Proxies received with instructions to vote for the election of Mr. Peace to the Board will not be voted