Nrg Energy

=== SEC Form 3 — Statement of Changes in Beneficial Ownership === Document Type: 3 Period of Report: 2026-08-06 --- Issuer --- Name: NRG ENERGY, INC. (NRG) CIK: 0001013871 --- Reporting Owner --- Name: Pistner Matthew CIK: 0002149081 Role: Officer (EVP, Pres. of NRG Wholesale) --- Holdings --- [Holding #1] Security: Common Stock, par value $.01 per share Ownership: D (Direct) Footnotes: [F1] Includes 5,115 Restricted Stock Units (RSUs) issued by NRG Energy, Inc. under NRG Energy, Inc.'s Long Term Incentive Plan. Each RSU is equivalent in value to one share of NRG's Common Stock, par value $.01. Includes 118 Dividend Equivalent Rights (DERs). Each DER is the economic equivalent to one share of NRG Common Stock. [Holding #2] Security: Relative Performance Stock Units Ownership: D (Direct) Footnotes: [F2] On January 2, 2024, the Reporting Person was issued 7,725 RPSUs by NRG under the LTIP that vest on January 2, 2027, subject to certain performance conditions. [Holding #3] Security: Relative Performance Stock Units Ownership: D (Direct) Footnotes: [F3] On January 2, 2025, the Reporting Person was issued 4,421 RPSUs by NRG under the LTIP that vest on January 2, 2028, subject to certain performance conditions. [Holding #4] Security: Relative Performance Stock Units Ownership: D (Direct) Footnotes: [F4] On January 2, 2026, the Reporting Person was issued 2,996 RPSUs by NRG under the LTIP that vest on January 2, 2029, subject to certain performance conditions. [Holding #5] Security: Relative Performance Stock Units Ownership: D (Direct) Footnotes: [F5] On June 15, 2026, the Reporting Person was issued 3,952 RPSUs by NRG under the LTIP that vest on June 15, 2029, subject to certain performance conditions. --- Footnotes (Complete Index) --- F1: Includes 5,115 Restricted Stock Units (RSUs) issued by NRG Energy, Inc. under NRG Energy, Inc.'s Long Term Incentive Plan. Each RSU is equivalent in value to one share of NRG's Common Stock, par value $.01. Includes 118 Dividend Equivalent Rights (DERs). Each DER is the economic equivalent to one share of NRG Common Stock. F2: On January 2, 2024, the Reporting Person was issued 7,725 RPSUs by NRG under the LTIP that vest on January 2, 2027, subject to certain performance conditions. F3: On January 2, 2025, the Reporting Person was issued 4,421 RPSUs by NRG under the LTIP that vest on January 2, 2028, subject to certain performance conditions. F4: On January 2, 2026, the Reporting Person was issued 2,996 RPSUs by NRG under the LTIP that vest on January 2, 2029, subject to certain performance conditions. F5: On June 15, 2026, the Reporting Person was issued 3,952 RPSUs by NRG under the LTIP that vest on June 15, 2029, subject to certain performance conditions. --- Signature --- /s/ Christine Zoino, by Power of Attorney (2026-08-13)