X0508 4 2025-03-05 1 0001350593 Mueller Water Products, Inc. MWA 0001303624 Heinrichs Steven S 1200 ABERNATHY RD., NE SUITE 1200 ATLANTA GA 30328 1 Former EVP, CFO, CLO and CCO 1 Common Stock 2025-03-05 4 M 0 38109.0000 11.8600 A 118336.6510 D Common Stock 2025-03-05 4 M 0 37350.0000 13.6400 A 155686.6510 D Common Stock 2025-03-05 4 M 0 31470.0000 11.4100 A 187156.6510 D Common Stock 2025-03-05 4 M 0 19675.0000 13.2200 A 206831.6510 D Common Stock 2025-03-05 4 S 0 1710.0000 24.9300 D 205121.6510 D Common Stock 2025-03-05 4 S 0 2494.0000 24.9300 D 202627.6510 D Common Stock 2025-03-05 4 S 0 3220.0000 24.9300 D 199407.6510 D Common Stock 2025-03-05 4 S 0 8089.0000 24.9266 D 191318.6510 D Common Stock 2025-03-05 4 S 0 14799.0000 24.9265 D 176519.6510 D Common Stock 2025-03-05 4 S 0 19675.0000 24.9262 D 156844.6510 D Common Stock 2025-03-05 4 S 0 31470.0000 24.8823 D 125374.6510 D Common Stock 2025-03-05 4 S 0 37350.0000 24.8797 D 88024.6510 D Common Stock 2025-03-05 4 S 0 38109.0000 24.8778 D 49915.6510 D Common Stock 2025-03-05 4 S 0 38517.0000 24.8772 D 11398.6510 D Stock Option (Right to Buy) 13.2200 2025-03-05 4 M 0 19675.0000 13.2200 D 2033-11-28 Common Stock 19675.0000 39350.0000 D Stock Option (Right to Buy) 11.4100 2025-03-05 4 M 0 31470.0000 11.4100 D 2032-11-29 Common Stock 31470.0000 15735.0000 D Stock Option (Right to Buy) 13.6400 2025-03-05 4 M 0 37350.0000 13.6400 D 2031-11-30 Common Stock 37350.0000 0.0000 D Stock Option (Right to Buy) 11.8600 2025-03-05 4 M 0 38109.0000 11.8600 D 2030-12-02 Common Stock 38109.0000 0.0000 D The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 4, 2024. The price reported in Column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $24.785 to $25.000, 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. The price reported in Column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $24.800 to $25.000, 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. The price reported in Column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $24.780 to $25.000, 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. The price reported in Column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $24.635 to $25.000, 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. The price reported in Column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $24.645 to $25.000, 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 11,398.651025 shares acquired under the Employee Stock Purchase Plan ("ESPP"). The stock options vest in three equal annual installments beginning on the first anniversary of the grant date. The stock options vested in three equal annual installments beginning on the first anniversary of the grant date. /s/ Barbara A. Smucygz, Attorney-in-Fact 2025-03-07