Company: MWA
Filing Date: 2025-12-19
Form Type: DEF 14A
Source: 0001350593-25-000069
Chunk: 1

Company: Mueller Water Products, Inc.
Filing Date: 2025-12-19
Form: DEF 14A
Chunk 1
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 or postponements thereof.

We use United States Securities and Exchange Commission (“SEC”) rules allowing issuers to furnish proxy materials to their stockholders over the Internet. A Notice of Internet Availability of Proxy Materials or this Proxy Statement will first be mailed to our stockholders on or about December 19, 2025. Please refer to the Notice of Internet Availability of Proxy Materials, proxy materials email or proxy card you received for information on how to vote your shares and to ensure your shares will be represented and voted at the Annual Meeting.

By Order of the Board of Directors.

#### CHASON A. CARROLL
Corporate Secretary

Atlanta, Georgia

December 19, 2025

#### PROXY STATEMENT FOR 2026 ANNUAL MEETING1

### LETTER TO STOCKHOLDERS

#### DEAR FELLOW STOCKHOLDERS,
As we look ahead to our 2026 Annual Meeting of Stockholders (“Annual Meeting”) of Mueller Water Products (“Mueller”), we can each take pride in our fiscal 2025 – keynoted by record setting financial results and an outstanding management team leading an entire organization committed to delivering long-term value to all of our stakeholders.

Fiscal 2025 marked another year of exceptional performance for Mueller, including strong net sales growth and more than a 100 basis points increase in our adjusted EBITDA margin. Our achievements in transforming our business over the past two years have expanded our gross margin by more than 600 basis points. Our team’s unwavering commitment and relentless focus on operational excellence and customer service enabled us to grow volumes and drive meaningful margin expansion, even as they navigated a complex external operating environment. These accomplishments demonstrate the soundness of our strategies – both long and near term, the strength and depth of our leadership team, and the dedication of our talented employees who drive our success every day – building on yesterday and looking forward to tomorrow.

In keeping with the Board’s thoughtful succession planning process, Mr. Thomas Hansen will retire from the Board at the conclusion of our Annual Meeting on February 9, 2026. Tom has been a Board member for almost 15 years, and, throughout his tenure, his valued insights, strategic guidance, and deep experience have been instrumental to Mueller’s success. On behalf of the entire Board, I thank Tom for his dedicated service and his many contributions to Mueller and its stockholders.

We are pleased to announce that Mr. Gregg Sengstack has been nominated for election to the Board at the upcoming Annual Meeting. Gregg joined us as a