X0306 4 2016-01-11 0 0001091862 Chemtura CORP CHMT 0001454798 Swiech Alan M 199 BENSON ROAD MIDDLEBURY CT 06749 0 1 0 0 See Remarks Common Stock 2016-01-11 4 M 0 5146 A 75556 D Common Stock 2016-01-11 4 F 0 1999 24.76 D 73557 D Performance Shares 2016-01-11 4 M 0 7317 D 2016-03-01 Common Stock 5146 0 D Each performance share was granted in 2013 and represented a contingent right to receive between 0 and 2 shares of Chemtura Corporation common stock based on Chemtura Corporation's total shareholder return against the companies comprising the Russell 3000 Index (the "TSR Metric"). 7,317 shares of common stock represented the target amount of the award granted in 2013. The performance shares vested at 70.3% of the target amount based on the TSR Metric, for a total payout of 5,146 shares of common stock. EVP, Organometallics Specialties & Support Services /s/ Alan Schutzman by Power of Attorney 2016-01-13