X0306 4 2021-05-18 0001350593 Mueller Water Products, Inc. MWA 0001729377 Helms Todd P 1200 ABERNATHY ROAD SUITE 1200 ATLANTA GA 30328 1 SVP and CHRO Common Stock 2021-05-18 4 L 0 37.4150 14.5300 A 9921.4150 D Common Stock 2021-08-18 4 L 0 35.1500 15.5200 A 9956.5650 D Common Stock 2021-11-18 4 L 0 40.5270 14.2500 A 10703.8532 D Common Stock 2022-02-24 4 F 0 1028.0000 12.3600 D 33069.0107 D Common Stock 2022-02-24 4 F 0 6439.0000 12.3600 D 26630.0107 D The reporting person is voluntarily early reporting beneficial ownership of 40.527 shares of common stock. Shares were withheld to cover the tax liability on the lapse of the restrictions on restricted stock units. Includes 1,448.92 shares acquired under the Mueller Water Products, Inc. Employee Stock Purchase Plan. /s/ Barbara A. Smucygz, Attorney-in-Fact 2022-03-01