X0508 4 2024-03-12 0000795403 WATTS WATER TECHNOLOGIES INC WTS 0001661822 Halloran Virginia A 815 CHESTNUT STREET NORTH ANDOVER MA 01845 1 Chief Accounting Officer 0 Class A Common Stock 2024-03-12 4 F 0 53.0000 202.7700 D 16123.0000 D Class A Common Stock 2024-03-13 4 F 0 36.0000 203.7800 D 16087.0000 D Class A Common Stock 2024-03-14 4 A 0 251.0000 0.0000 A 16338.0000 D Represents shares disposed to cover taxes upon the vesting of a deferred stock award granted to the Reporting Person on March 12, 2021. The disposition of shares to cover tax withholding obligations is required by the terms of the Reporting Person's grant agreement and does not represent a discretionary transaction by the Reporting Person. Represents shares disposed to cover taxes upon the vesting of a deferred stock award granted to the Reporting Person on March 13, 2023. The disposition of shares to cover tax withholding obligations is required by the terms of the Reporting Person's grant agreement and does not represent a discretionary transaction by the Reporting Person. Consists of shares of deferred stock that vest in three equal annual installments beginning on the first anniversary of the date of grant. /s/ Seth M. Kipp, Attorney-in-Fact 2024-03-14