X0306 4/A 2015-12-16 2015-12-18 1 0001082510 UIL HOLDINGS CORP UIL 0001408183 Favuzza Steven P 157 CHURCH STREET P. O. BOX 1564 NEW HAVEN CT 06517 0 1 0 0 VP & Controller Common Stock 2015-12-16 4 D 0 11211.1071 0.00 D 0 D Common Stock 2015-12-16 4 D 0 4425.516 0.00 D 0 I By UIL Employee Stock Ownership Plan (KSOP) Deferred Stock Units 2015-12-16 4 D 0 4533.41 0.00 D Common Stock 4533.41 0 D Disposed of pursuant to the merger of UIL Holdings Corporation (UIL) and Avangrid, Inc. (AGR) in exchange for a like number of shares of common stock of AGR plus $10.50 per share. This amendment is being filed to correct an administrative error that reported the ownership as direct and did not include the type of security on the Form 4 filed 12/18/2015. Deferred Stock Units represent shares granted to the recipient and deferred under UIL's Deferred Compensation Plan (DCP). Payment of the deferred stock underlying the deferred stock unit is made at the time elected by the recipient pursuant to the terms and provisions of the DCP. Each share disposed of pursuant to the merger of UIL and AGR in exchange for 1.28059748557929000 Deferred Stock Units of AGR. All securities listed on this amendment were incorrectly labelled as acquisitions on the Form 4 filed 12/18/2015. /s/ Patricia C. Cosgel, attorney-in-fact for Steven P. Favuzza 2016-01-06