X0306 4 2017-02-28 0 0001130310 CENTERPOINT ENERGY INC CNP 0001134707 O'Brien Dana C. 1111 LOUISIANA HOUSTON TX 77002 0 1 0 0 SVP, Gen Counsel, Corp Sec Common Stock 2017-02-28 4 A 0 5548 0.00 A 33914 D Common Stock 2017-02-28 4 F 0 1514 27.32 D 32400 D Vesting of performance shares awarded in 2014 under the Issuer's Long-term Incentive Plan Shares withheld for taxes upon vesting of performance shares. Total includes (i) 4,910 time-based restricted stock units previously awarded under the Issuer's Long-term Incentive Plan and vesting in February 2017, (ii) 6,460 time-based restricted stock units previously awarded under the Issuer's Long-term Incentive Plan and vesting in February 2018, and (iii) 9,719 time-based restricted stock units previously awarded under the Issuer's Long-term Incentive Plan and vesting in February 2020. Each award shall vest if the Reporting Person continues to be an employee of Issuer from the grant date through the vesting date and on a pro-rata basis in the event of her earlier retirement, disability or death. Vincent A. Mercaldi, Attorney-in-Fact 2017-03-02