X0508 4 2024-09-03 0001013871 NRG ENERGY, INC. NRG 0001734640 Curci Brian 804 CARNEGIE CENTER PRINCETON NJ 08540 1 Exec VP & General Counsel 0 Common Stock, par value $.01 per share 2024-09-03 4 M 0 5990.0000 0.0000 A 96770.0000 D Common Stock, par value $.01 per share 2024-09-03 4 M 0 646.0000 0.0000 A 97416.0000 D Common Stock, par value $.01 per share 2024-09-03 4 F 0 285.0000 0.0000 D 97131.0000 D Common Stock, par value $.01 per share 2024-09-03 4 F 0 2815.0000 0.0000 D 94316.0000 D Dividend Equivalent Rights 2024-09-03 4 M 0 646.0000 0.0000 D 2024-09-03 2024-09-03 Common Stock, par value $.01 per share 646.0000 0.0000 D Relative Performance Stock Units 0.0000 2024-09-03 4 M 0 5990.0000 79.7500 D 2024-09-03 2024-09-03 Common Stock, par value $.01 per share 5990.0000 0.0000 D The Reporting Person was issued 5,990 Relative Performance Stock Units (RPSUs) by NRG Energy, Inc. (NRG) under NRG's Amended and Restated Long-Term Incentive Plan (LTIP) that vested subject to certain performance conditions on September 3, 2024. In connection with the vesting of the RPSUs described above, an incremental 646 Dividend Equivalent Rights (DERs) vested. Each DER is the economic equivalent of one share of Common Stock. On September 3, 2021, the Reporting Person was issued 1,816 Restricted Stock Units ("RSUs") by NRG Energy, Inc. under NRG Energy, Inc.'s Amended and Restated Long Term Incentive Plan. Each RSU is equivalent in value to one share of NRG's common stock, par value $.01. On September 3, 2024, 607 shares vested. The Reporting Person elected to satisfy their tax obligation upon the exchange of common stock for RSUs having a value on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 285 shares of common stock to satisfy the grantee's tax withholding obligation. In connection with the vesting of the RSUs described above, 65 DERs vested, resulting in the Reporting Person holding 1,298 dividend equivalent rights in the aggregate. Dividend equivalent rights accrue on the Reporting Person's restricted stock units or relative performance stock units, which become exercisable proportionately with the restricted stock units or relative performance stock units. The Reporting Person elected to satisfy their tax withholding obligation upon the exchange of Common Stock for Relative Performance Stock Units (RPSUs) having a value on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 2,815 shares of Common Stock to satisfy the Reporting Person's tax withholding obligation. Conversion price not applicable. Christine Zoino, by Power of Attorney 2024-09-05