X0306 4 2021-08-30 0001350593 Mueller Water Products, Inc. MWA 0001191471 ZAKAS MARIETTA EDMUNDS 1200 ABERNATHY ROAD SUITE 1200 ATLANTA GA 30328 1 EVP and CFO Common Stock 2021-08-30 4 M 0 25260.0000 2.0300 A 324197.8508 D Common Stock 2021-08-30 4 S 0 25260.0000 16.6630 D 298937.8508 D Common Stock 28101.8600 I By Spouse Stock Option (Right to Buy) 2.0300 2021-08-30 4 M 0 25260.0000 0.0000 D 2021-11-29 Common Stock 25260.0000 0.0000 D This transaction was an exercise of vested stock options granted in November 2011 that would have expired in November 2021. The price reported in Column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $16.605 to $16.735, inclusive. The reporting person undertakes to provide to Mueller Water Products, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. Includes 1,761.051 shares acquired under the Mueller Water Products, Inc. Employee Stock Purchase Plan. The stock options vested in three equal annual installments beginning on the first anniversary of the grant date, November 29, 2011. /s/ Barbara A. Smucygz, Attorney-in-Fact 2021-08-31