X0306 4 2017-02-18 0 0001130310 CENTERPOINT ENERGY INC CNP 0001526699 Prochazka Scott M 1111 LOUISIANA HOUSTON TX 77002 1 1 0 0 President & CEO Common Stock 2017-02-18 4 F 0 9325 26.51 D 177861 D Common Stock 6538 I By Savings Plan Shares withheld for taxes upon vesting of time-based restricted stock units. Total includes (i) 37,480 time-based restricted stock units previously awarded under the Issuer's Long-term Incentive Plan and vesting in February 2018, and (ii) 63,258 time-based restricted stock units previously awarded under the Issuer's Long-term Incentive Plan and vesting in February 2019. 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 his earlier retirement, disability or death. Equivalent shares held in CenterPoint Energy, Inc. Savings Plan. Vincent A. Mercaldi, Attorney-in-Fact 2017-02-22