X0609 4 2026-08-20 0000795403 WATTS WATER TECHNOLOGIES INC WTS 0001573151 Noonan Joseph T false 815 CHESTNUT STREET NORTH ANDOVER MA 01845 1 0 Class A Common Stock 2026-08-20 4 C 0 3650.0000 0 A 3650.0000 I By Trust Class A Common Stock 1650.0000 D Class B Common Stock 2026-08-20 5 G 0 3650.0000 0.0000 A Class A Common Stock 3650.0000 3650.0000 I By Trust Class B Common Stock 2026-08-20 4 C 0 3650.0000 0.0000 D Class A Common Stock 3650.0000 0.0000 I By Trust Class B Common Stock Class A Common Stock 6447.0000 6447.0000 I The Kiera R. Noonan Trust - 2017 Class B Common Stock Class A Common Stock 5922.0000 5922.0000 I The Liv R. Noonan Trust - 2017 Class B Common Stock Class A Common Stock 6447.0000 6447.0000 I The Tessa R. Noonan Trust - 2017 Shares of Class B Common Stock are convertible into shares of Class A Common Stock on a 1-for-1 basis. The shares are held in a trust for the benefit of Tiffany Horne Noonan, the Reporting Person's spouse, who also serves as co-trustee of this trust. All shares of Class B Common Stock were convertible into Class A Common Stock upon issuance and do not have an expiration date. The shares are held by the Kiera R. Noonan Trust - 2017, which was established for the benefit of the Reporting Person's daughter. The Reporting Person serves as trustee of this trust. The shares are held by the Liv R. Noonan Trust - 2017, which was established for the benefit of the Reporting Person's daughter. The Reporting Person serves as trustee of this trust. The shares are held by the Tessa R. Noonan Trust - 2017, which was established for the benefit of the Reporting Person's daughter. The Reporting Person serves as trustee of this trust. /s/ Seth M. Kipp, Attorney-in-Fact 2026-08-21