X0306 4 2022-07-11 0000795403 WATTS WATER TECHNOLOGIES INC WTS 0001235976 HORNE TIMOTHY P 815 CHESTNUT STREET NORTH ANDOVER MA 01845 1 Class A Common Stock 2022-07-11 4 C 0 16000.0000 0 A 16000.0000 I By Trust Class B Common Stock 2022-07-11 4 C 0 16000.0000 0.0000 D Class A Common Stock 16000.0000 4988290.0000 I By Trust Class B Common Stock Class A Common Stock 1000000.0000 1000000.0000 I By Revocable Trust Shares of Class B Common Stock are convertible into shares of Class A Common Stock on a 1-for-1 basis. On November 2, 2021, the Reporting Person resigned as co-trustee of a trust for the benefit of Tara V. Horne, the Reporting Person's daughter. The Reporting Person ceased to beneficially own any shares held by this trust as of such date and any such shares are not included in this total. The shares are held in a trust for the benefit of Tiffany Horne Noonan. The Reporting Person 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. Consists of the following shares of Class B Common Stock which are subject to The Amended and Restated George B. Horne Voting Trust Agreement - 1997 for which the Reporting Person serves as trustee: (i) 1,666,970 shares held in a trust for the benefit of Daniel W. Horne, (ii) 1,666,970 shares held in a trust for the benefit of Deborah Horne, (iii) 1,495,010 shares held in a trust for the benefit of Peter W. Horne, (iv) 22,600 shares held in a trust for the benefit of Tiffany Horne Noonan, (v) 113,924 shares held in a trust for the benefit of Tiffany Horne Noonan, (vi) 4,000 shares held in a trust for the benefit of Tiffany Horne Noonan, (vii) 6,447 shares held in a trust for the benefit of Kiera R. Noonan, (viii) 6,447 shares held in a trust for the benefit of Tessa R. Noonan, and (ix) 5,922 shares held in a trust for the benefit of Liv R. Noonan. These shares of Class B Common Stock are held in a revocable trust of which the Reporting Person is the sole trustee and the sole beneficiary. /s/ Seth M. Kipp, Attorney-in-Fact 2022-07-12