X0304 4 2012-03-01 0 0001091862 Chemtura CORP CHMT 0001380009 Mahoney Kevin V 199 BENSON ROAD MIDDLEBURY CT 06749 0 1 0 0 SVP and Corporate Controller Common Stock 2012-03-01 4 A 0 8778 0 A 28147 D Common Stock 2012-03-01 4 A 0 11167 0 A 39314 D Common Stock 2012-03-01 4 F 0 3839 15.38 D 35475 D Employee Stock Option (right to buy) 15.38 2012-03-01 4 A 0 12141 0 A 2022-03-01 Common Stock 12141 12141 D Performance Shares 2012-03-01 4 A 0 4876 0 A 2015-03-01 Common Stock 4876 4876 D Grant of restricted stock units. The restricted stock units vest in three equal installments: March 1, 2013; March 1, 2014; and March 1, 2015. Grant of stock options. The stock options vest in three equal installments: March 1, 2013; March 1, 2014; and March 1, 2015. Each performance share represents a contingent right to receive one share of Chemtura Corporation common stock. The performance shares vest based on Chemtura Corporation's total shareholder return against the companies comprising the Russell 3000 Index. /s/ Alan Schutzman by Power of Attorney 2012-03-05