X0306 5 2017-12-31 0 0 0000795403 WATTS WATER TECHNOLOGIES INC WTS 0001235976 HORNE TIMOTHY P 815 CHESTNUT STREET NORTH ANDOVER MA 01845 1 Class B Common Stock 2017-12-27 5 G 0 1050.0000 0.0000 A Class A Common Stock 1050.0000 5080340.0000 I By Trust Class B Common Stock 2017-12-27 5 G 0 1050.0000 0.0000 D Class A Common Stock 1050.0000 5079290.0000 I By Trust Class B Common Stock Class A Common Stock 1250000.0000 1250000.0000 D Shares of Class B Common Stock are convertible into shares of Class A Common Stock on a 1-for-1 basis. 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) 131,690 shares held in a trust for the benefit of Tiffany Horne Noonan, (vi) 55,000 shares held in a trust for the benefit of Tara V. Horne, (vii) 40,000 shares held in a trust for the benefit of Tiffany Horne Noonan, (viii) 525 shares held in a trust for the benefit of Kiera R. Noonan, and (ix) 525 shares held in a trust for the benefit of Tessa R. Noonan. On December 27, 2017, 1050 shares of Class B Common Stock were transferred by gift from a trust for the benefit of Tiffany Horne Noonan. Of this amount, 525 shares were transferred by gift to a new trust for the benefit of Kiera R. Noonan, and 525 shares were transferred to a new trust for the benefit of Tessa R. Noonan. The shares held by these new trusts are subject to the Amended and Restated George B. Horne Voting Trust Agreement - 1997 for which the Reporting Person serves as trustee (the "Voting Trust"). Following these transfers, 131,960 shares remain held by the trust for the benefit of Tiffany Horne Noonan and are subject to the Voting Trust. /s/ Amy B. Clark, Attorney-in-Fact 2018-02-01