NRG

SEC source: 0001225208-21-000519 · doc4.xml · nonDerivative · entry 3

Curci Brian · CIK 0001734640 · Sr VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,113

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · price: In connection with the vesting of the RPSUs described above, an incremental 414 DERs vested. 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 to which they relate and may only be settled in NRG common stock. Each dividend equivalent right is the economic equivalent of one share of NRG common stock.

SEC source: 0001225208-21-000519 · doc4.xml · nonDerivative · entry 2

Curci Brian · CIK 0001734640 · Sr VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 41,699

F2 · shares: Represents Restricted Stock Units issued to the Reporting Person under NRG Energy, Inc.'s Amended and Restated Long-Term Incentive Plan ("LTIP").

F3 · price: Each RSU is equivalent in value to one share of NRG's Common Stock, par value $.01 per share. The Reporting Person will receive from NRG one such share of Common Stock for each RSU that will vest ratably over a three year period beginning on the first anniversary of the date of grant.

SEC source: 0001225208-21-000519 · doc4.xml · nonDerivative · entry 1

Curci Brian · CIK 0001734640 · Sr VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,341

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The Reporting Person was issued 7,610 RPSUs by NRG under the LTIP on January 2, 2018 that vested on January 2, 2021. On the vesting date the Reporting Person was entitled to receive a maximum of 15,220 shares of Common Stock if the company achieved 100% increase in total shareholder return since the grant date (the "Maximum"), 7,610 shares of Common Stock if there is no change in total shareholder return since the grant date (the "Target") or 1,903 shares of Common Stock if there is a 25% decrease in total shareholder return since the grant date (the "Threshold"). The Reporting Person wouldnot have received any shares of Common Stock if total shareholder return had decreased by more than 25% since the grant date. The number of shares that the Reporting Person could have received in interpolated for total shareholder return fall between Threshold, Target and Maximum levels. On January 2, 2021 the reporting person vested in 9,589 shares.

SEC source: 0001225208-21-000440 · doc4.xml · derivative · entry 10

Moser Christopher · CIK 0001726304 · Exec VP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,271

Underlying: Common Stock, par value $.01 per share · 15,271 shares

Expires 2024-01-02

F14 · derivative.exercise_price: The Reporting Person was issued 15,271 Relative Performance Stock Units ("RPSUs") by NRG Energy, Inc. under the LTIP on January 2, 2021. The RPSUs will convert to shares of NRG Common Stockon January 2, 2024 only in the event the Company has achieved a certain level of total shareholder return ("TSR") relative to the Peer Group (defined below) over a three-year performance period. The numberof shares of Common Stock that the Reporting Person may receive is interpolated for TSR falling between Threshold, Target, and Maximum levels as described below.

F15 · shares: Reporting Person will receive(i) a maximum of 30,542 shares of Common Stock if Company's TSR is ranked at or above the 75th percentile relative to a peer group of companies approved by the Company's Compensation Committee (the "Peer Group") for the performance period (the "Maximum"); (ii) 15,271 shares of Common Stock if Company's TSR is ranked at the 55th percentile relative to the Peer Group for the performance period (the "Target"); provided, however, if TSR is less than negative fifteen percent (-15%), the Company's TSR must be ranked at the 65th percentile relative to the Peer Group for the performance period to receive the Target award; or (iii) 3,818 shares of Common Stock if Company's TSR is ranked at the 25th percentile relative to the Peer Group for the performance period(the "Threshold"). The Reporting Person will not receive any shares of Common Stock if Company's TSR is below the 25th percentile relative to the Peer Group for the performance period.

F16 · derivative.underlying_shares: The Maximum award that the Reporting Person will receive shall not exceed six (6) times the fair market value of the Target award, determined as of the date of grant.

SEC source: 0001225208-21-000440 · doc4.xml · derivative · entry 9

Moser Christopher · CIK 0001726304 · Exec VP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $.01 per share · 24,782 shares

Expires 2021-01-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F13 · derivative.exercise_price: The Reporting Person was issued 19,668 RPSUs by NRG under the LTIP on January 2, 2018 that vested on January 2, 2021. On the vesting date the Reporting Person was entitled to receive a maximum of 39,366 shares of Common Stock if the company achieved 100% increase in total shareholder return since the grant date (the "Maximum"), 19,668 shares of Common Stock if there is no change in total shareholder return since the grant date (the "Target") or 4,917 shares of Common Stock if there is a 25% decrease in total shareholder return since the grant date (the "Threshold"). The Reporting Person wouldnot have received any shares of Common Stock if total shareholder return had decreased by more than 25% since the grant date. The number of shares that the Reporting Person could have received in interpolated for total shareholder return fall between Threshold, Target and Maximum levels. On January 2, 2021 the reporting person vested in 24,782 shares.

SEC source: 0001225208-21-000440 · doc4.xml · derivative · entry 8

Moser Christopher · CIK 0001726304 · Exec VP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $.01 per share · 1,071 shares

Expires 2021-01-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F12 · derivative.exercise_price: In connection with the vesting of the RPSUs described above, an incremental 1,071 DERs vested. Dividend equivalent rights accrue on the Reporting Person's restricted stock units relative performance stock units, which become exercisable proportionately with the restricted stock units or relative performance stock units to which they relate and may only be settled inNRG common stock. Each dividend equivalent right is the economic equivalent of one share of NRG common stock.

SEC source: 0001225208-21-000440 · doc4.xml · nonDerivative · entry 7

Moser Christopher · CIK 0001726304 · Exec VP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 139,909

F11 · price: The Reporting Person elected to satisfy their tax withholding obligation upon the exchange of common stock for RPSUs having a value on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 8,588 shares of common stock to satisfy the grantee's tax withholding obligation

SEC source: 0001225208-21-000440 · doc4.xml · nonDerivative · entry 6

Moser Christopher · CIK 0001726304 · Exec VP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 148,497

F9 · price: On January 2, 2018, the Reporting Person was issued 11,990 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 January 2, 2021 4,005 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 1,344 shares of common stock to satisfy the grantee's tax withholding obligation.

F10 · balance_after: In connection with the vesting of the RSUs described above, 173 DERs vested, resulting in the Reporting Person holding 356 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.

SEC source: 0001225208-21-000440 · doc4.xml · nonDerivative · entry 5

Moser Christopher · CIK 0001726304 · Exec VP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 149,841

F7 · price: On January 2, 2020, the Reporting Person was issued 9,594 Restricted Stock Units ("RSUs") by NRG Energy, Inc. under NRG Energy, Inc.'s Amended and Restated Long Term Incentive Plan. Each RSU is equivalentin value to one share of NRG's common stock, par value $.01. On January 2, 2021 3,194 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 907 shares of common stock to satisfy the grantee's tax withholding obligation.

F8 · balance_after: In connection with the vesting of the RSUs described above, 114 DERs vested, resulting in the Reporting Person holding 652 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 units or relative performance stock units.

SEC source: 0001225208-21-000440 · doc4.xml · nonDerivative · entry 4

Moser Christopher · CIK 0001726304 · Exec VP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 150,748

F5 · price: On January 2, 2019, the Reporting Person was issued 9,483 Restricted Stock Units ("RSUs") by NRG Energy, Inc. under NRG Energy, Inc.'s Amended and Restated Long Term Incentive Plan. Each RSU is equivalentin value to one share of NRG's common stock, par value $.01. On January 2, 2021 3,158 shares vested. The Reporting Person elected to satisfy their tax obligation upon the exchange of common stock for RSUs having avalue on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 889 shares of common stock to satisfy the grantee's tax withholding obligation.

F6 · balance_after: In connection with the vesting of the RSUs described above, 123 DERs vested, resulting in the Reporting Person holding 529 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.

SEC source: 0001225208-21-000440 · doc4.xml · nonDerivative · entry 3

Moser Christopher · CIK 0001726304 · Exec VP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 151,637

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · price: In connection with the vesting of the RPSUs described above, an incremental 1,071 DERs vested. 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 to which they relate and may only be settled in NRG common stock. Each dividend equivalent right is the economic equivalent of one share of NRG common stock.

SEC source: 0001225208-21-000440 · doc4.xml · nonDerivative · entry 2

Moser Christopher · CIK 0001726304 · Exec VP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 150,566

F2 · shares: Represents Restricted Stock Units issued to the Reporting Person under NRG Energy, Inc.'s Amended and Restated Long-Term Incentive Plan ("LTIP").

F3 · price: Each RSU is equivalent in value to one share of NRG's Common Stock, par value $.01 per share. The Reporting Person will receive from NRG one such share of Common Stock for each RSU that will vest ratably over a three year period beginning on the first anniversary of the date of grant.

SEC source: 0001225208-21-000440 · doc4.xml · nonDerivative · entry 1

Moser Christopher · CIK 0001726304 · Exec VP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 140,653

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The Reporting Person was issued 19,668 RPSUs by NRG under the LTIP on January 2, 2018 that vested on January 2, 2021. On the vesting date the Reporting Person was entitled to receive a maximum of 39,336 shares of Common Stock if the company achieved 100% increase in total shareholder return since the grant date (the "Maximum"), 19,668 shares of Common Stock if there is no change in total shareholder return since the grant date (the "Target") or 4,917 shares of Common Stock if there is a 25% decrease in total shareholder return since the grant date (the "Threshold"). The Reporting Person wouldnot have received any shares of Common Stock if total shareholder return had decreased by more than 25% since the grant date. The number of shares that the Reporting Person could have received in interpolated for total shareholder return fall between Threshold, Target and Maximum levels. On January 2, 2021 the reporting person vested in 24,782 shares.

SEC source: 0001225208-21-000439 · doc4.xml · derivative · entry 16

Killinger Elizabeth R · CIK 0001662519 · Exec VP, Retail

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,271

Underlying: Common Stock, par value $.01 per share · 15,271 shares

Expires 2024-01-02

F15 · derivative.exercise_price: The Reporting Person was issued 15,271 Relative Performance Stock Units ("RPSUs") by NRG Energy, Inc. under the LTIP on January 2, 2021. The RPSUs will convert to shares of NRG Common Stockon January 2, 2024 only in the event the Company has achieved a certain level of total shareholder return ("TSR") relative to the Peer Group (defined below) over a three-year performance period. The numberof shares of Common Stock that the Reporting Person may receive is interpolated for TSR falling between Threshold, Target, and Maximum levels as described below.

F16 · shares: Reporting Person will receive(i) a maximum of 30,542 shares of Common Stock if Company's TSR is ranked at or above the 75th percentile relative to a peer group of companies approved by the Company's Compensation Committee (the "Peer Group") for the performance period (the "Maximum"); (ii) 15,271 shares of Common Stock if Company's TSR is ranked at the 55th percentile relative to the Peer Group for the performance period (the "Target"); provided, however, if TSR is less than negative fifteen percent (-15%), the Company's TSR must be ranked at the 65th percentile relative to the Peer Group for the performance period to receive the Target award; or (iii) 3,817 shares of Common Stock if Company's TSR is ranked at the 25th percentile relative to the Peer Group for the performance period(the "Threshold"). The Reporting Person will not receive any shares of Common Stock if Company's TSR is below the 25th percentile relative to the Peer Group for the performance period.

F17 · derivative.underlying_shares: The Maximum award that the Reporting Person will receive shall not exceed six (6) times the fair market value of the Target award, determined as of the date of grant.

SEC source: 0001225208-21-000439 · doc4.xml · derivative · entry 15

Killinger Elizabeth R · CIK 0001662519 · Exec VP, Retail

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $.01 per share · 25,046 shares

Expires 2021-01-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F14 · derivative.exercise_price: The Reporting Person was issued 19,878 RPSUs by NRG under the LTIP on January 2, 2018 that vested on January 2, 2021. On the vesting date the Reporting Person was entitled to receive a maximum of 39,756 shares of Common Stock if the company achieved 100% increase in total shareholder return since the grant date (the "Maximum"), 19,878 shares of Common Stock if there is no change in total shareholder return since the grant date (the "Target") or 4,970 shares of Common Stock if there is a 25% decrease in total shareholder return since the grant date (the "Threshold"). The Reporting Person would not have received any shares of Common Stock if total shareholder return had decreased by more than 25% since the grant date. The number of shares that the Reporting Person could have received in interpolated for total shareholder return fall between Threshold, Target and Maximum levels. On January 2, 2021 the reporting person vested in 25,046 shares.

SEC source: 0001225208-21-000439 · doc4.xml · derivative · entry 14

Killinger Elizabeth R · CIK 0001662519 · Exec VP, Retail

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $.01 per share · 1,082 shares

Expires 2021-01-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: In connection with the vesting of the RPSUs described above, an incremental 1,082 DERs vested. 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 to which they relate and may only be settled in NRG common stock. Each dividend equivalent right is the economic equivalent of one share of NRG common stock.

SEC source: 0001225208-21-000439 · doc4.xml · nonDerivative · entry 9

Killinger Elizabeth R · CIK 0001662519 · Exec VP, Retail

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 155,071

F12 · price: The Reporting Person elected to satisfy their tax withholding obligation upon the exchange of common stock for RPSUs having a value on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 7,909 shares of common stock to satisfy the grantee's tax withholding obligation

SEC source: 0001225208-21-000439 · doc4.xml · nonDerivative · entry 8

Killinger Elizabeth R · CIK 0001662519 · Exec VP, Retail

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 162,980

F10 · price: On January 2, 2018, the Reporting Person was issued 12,118 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 January 2, 2021 4,048 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 1,226 shares of common stock to satisfy the grantee's tax withholding obligation.

F11 · balance_after: In connection with the vesting of the RSUs described above, 174 DERs vested, resulting in the Reporting Person holding 356 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.

SEC source: 0001225208-21-000439 · doc4.xml · nonDerivative · entry 7

Killinger Elizabeth R · CIK 0001662519 · Exec VP, Retail

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 164,206

F8 · price: On January 2, 2020, the Reporting Person was issued 9,594 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 January 2, 2021 3,194 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 805 shares of common stock to satisfy the grantee's tax withholding obligation.

F9 · balance_after: In connection with the vesting of the RSUs described above, 114 DERs vested, resulting in the Reporting Person holding 530 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.

SEC source: 0001225208-21-000439 · doc4.xml · nonDerivative · entry 6

Killinger Elizabeth R · CIK 0001662519 · Exec VP, Retail

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 165,011

F6 · price: On January 2, 2019, the Reporting Person was issued 9,483 Restricted Stock Units ("RSUs") by NRG Energy, Inc. under NRG Energy, Inc.'s Amended and Restated Long Term Incentive Plan. Each RSU is equivalentin value to one share of NRG's common stock, par value $.01. On January 2, 2021 3,158 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 789 shares of common stock to satisfy the grantee's tax withholding obligation.

F7 · balance_after: In connection with the vesting of the RSUs described above, 123 DERs vested, resulting in the Reporting Person holding 644 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.

SEC source: 0001225208-21-000439 · doc4.xml · nonDerivative · entry 5

Killinger Elizabeth R · CIK 0001662519 · Exec VP, Retail

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 165,800

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · price: In connection with the vesting of the RPSUs described above, an incremental 1,082 DERs vested. 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 to which they relate and may only be settled in NRG common stock. Each dividend equivalent right is the economic equivalent of one share of NRG common stock.

SEC source: 0001225208-21-000439 · doc4.xml · nonDerivative · entry 4

Killinger Elizabeth R · CIK 0001662519 · Exec VP, Retail

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 164,718

F3 · shares: Represents Restricted Stock Units issued to the Reporting Person under NRG Energy, Inc.'s Amended and Restated Long-Term Incentive Plan ("LTIP").

F4 · price: Each RSU is equivalent in value to one share of NRG's Common Stock, par value $.01 per share. The Reporting Person will receive from NRG one such share of Common Stock for each RSU that will vest ratably over a three year period beginning on the first anniversary of the date of grant.

SEC source: 0001225208-21-000439 · doc4.xml · nonDerivative · entry 3

Killinger Elizabeth R · CIK 0001662519 · Exec VP, Retail

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,805

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: The Reporting Person was issued 19,878 RPSUs by NRG under the LTIP on January 2, 2018 that vested on January 2, 2021. On the vesting date the Reporting Person was entitled to receive a maximum of 39,756 shares of Common Stock if the company achieved 100% increase in total shareholder return since the grant date (the "Maximum"), 19,878 shares of Common Stock if there is no change in total shareholder return since the grant date (the "Target") or 4,970 shares of Common Stock if there is a 25% decrease in total shareholder return since the grant date (the "Threshold"). The Reporting Person wouldnot have received any shares of Common Stock if total shareholder return had decreased by more than 25% since the grant date. The number of shares that the Reporting Person could have received in interpolated for total shareholder return fall between Threshold, Target and Maximum levels. On January 2, 2021 the reporting person vested in 25,406 shares.

SEC source: 0001225208-21-000721 · doc4.xml · derivative · entry 10

Callen David · CIK 0001636160 · Sr VP & Chief Accounting Offic

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,056

Underlying: Common Stock, par value $.01 per share · 7,056 shares

Expires 2024-01-02

F12 · derivative.exercise_price: The Reporting Person was issued 7,056 Relative Performance Stock Units ("RPSUs") by NRG Energy, Inc. under the LTIP on January 2, 2021. The RPSUs will convert to shares of NRG Common Stockon January 2, 2024 only in the event the Company has achieved a certain level of total shareholder return ("TSR") relative to the Peer Group (defined below) over a three-year performance period. The numberof shares of Common Stock that the Reporting Person may receive is interpolated for TSR falling between Threshold, Target, and Maximum levels as described below.

F13 · shares: Reporting Person will receive(i) a maximum of 14,112 shares of Common Stock if Company's TSR is ranked at or above the 75th percentile relative to a peer group of companies approved by the Company's Compensation Committee (the "Peer Group") for the performance period (the "Maximum"); (ii) 7,056 shares of Common Stock if Company's TSR is ranked at the 55th percentile relative to the Peer Group for the performance period (the "Target"); provided, however, if TSR is less than negative fifteen percent (-15%), the Company's TSR must be ranked at the 65th percentile relative to the Peer Group for the performance period to receive the Target award; or (iii) 1,764 shares of Common Stock if Company's TSR is ranked at the 25th percentile relative to the Peer Group for the performance period(the "Threshold"). The Reporting Person will not receive any shares of Common Stock if Company's TSR is below the 25th percentile relative to the Peer Group for the performance period.

F14 · derivative.underlying_shares: The Maximum award that the Reporting Person will receive shall not exceed six (6) times the fair market value of the Target award, determined as of the date of grant.

SEC source: 0001225208-21-000721 · doc4.xml · derivative · entry 9

Callen David · CIK 0001636160 · Sr VP & Chief Accounting Offic

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $.01 per share · 11,451 shares

Expires 2021-01-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The Reporting Person was issued 9,088 RPSUs by NRG under the LTIP on January 2, 2018 that vested on January 2, 2021. On the vesting date the Reporting Person was entitled to receive a maximum of 18,176 shares of Common Stock if the company achieved 100% increase in total shareholder return since the grant date (the "Maximum"), 9,088 shares of Common Stock if there is no change in total shareholder return since the grant date (the "Target") or 2,272 shares of Common Stock if there is a 25% decrease in total shareholder return since the grant date (the "Threshold"). The Reporting Person wouldnot have received any shares of Common Stock if total shareholder return had decreased by more than 25% since the grant date. The number of shares that the Reporting Person could have received in interpolated for total shareholder return fall between Threshold, Target and Maximum levels. On January 2, 2021 the reporting person vested in 11,451 shares.

SEC source: 0001225208-21-000721 · doc4.xml · derivative · entry 8

Callen David · CIK 0001636160 · Sr VP & Chief Accounting Offic

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $.01 per share · 494 shares

Expires 2021-01-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: In connection with the vesting of the RPSUs described above, an incremental 494 DERs vested. 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 to which they relate and may only be settled in NRG common stock. Each dividend equivalent right is the economic equivalent of one share of NRG common stock.

SEC source: 0001225208-21-000721 · doc4.xml · nonDerivative · entry 7

Callen David · CIK 0001636160 · Sr VP & Chief Accounting Offic

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,357

F11 · price: The Reporting Person elected to satisfy their tax withholding obligation upon the exchange of common stock for RPSUs having a value on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 4,154 shares of common stock to satisfy the grantee's tax withholding obligation

SEC source: 0001225208-21-000721 · doc4.xml · nonDerivative · entry 6

Callen David · CIK 0001636160 · Sr VP & Chief Accounting Offic

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,511

F9 · price: On January 2, 2018, the Reporting Person was issued 5,540 Restricted Stock Units ("RSUs") by NRG Energy, Inc. under NRG Energy, Inc.'s Amended and Restated Long Term Incentive Plan. Each RSU is equivalentin value to one share of NRG's common stock, par value $.01. On January 2, 2021 1,851 shares vested. The Reporting Person elected to satisfy their tax obligation upon the exchange of common stock for RSUs having avalue on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 763 shares of common stock to satisfy the grantee's tax withholding obligation.

F10 · balance_after: In connection with the vesting of the RSUs described above, 79 DERs vested, resulting in the Reporting Person holding 161 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.

SEC source: 0001225208-21-000721 · doc4.xml · nonDerivative · entry 5

Callen David · CIK 0001636160 · Sr VP & Chief Accounting Offic

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,274

F7 · price: On January 2, 2019, the Reporting Person was issued 4,286 Restricted Stock Units ("RSUs") by NRG Energy, Inc. under NRG Energy, Inc.'s Amended and Restated Long Term Incentive Plan. Each RSU is equivalentin value to one share of NRG's common stock, par value $.01. On January 2, 2021 1,427 shares vested. The Reporting Person elected to satisfy their tax obligation upon the exchange of common stock for RSUs having avalue on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 586 shares of common stock to satisfy the grantee's tax withholding obligation.

F8 · balance_after: In connection with the vesting of the RSUs described above, 55 DERs vested, resulting in the Reporting Person holding 240 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.

SEC source: 0001225208-21-000721 · doc4.xml · nonDerivative · entry 4

Callen David · CIK 0001636160 · Sr VP & Chief Accounting Offic

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,860

F5 · price: On January 2, 2020, the Reporting Person was issued 4,304 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 January 2, 2021 1,433 shares vested. The Reporting Person elected to satisfy their tax obligation upon the exchange of common stock for RSUs having avalue on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 519 shares of common stock to satisfy the grantee's tax withholding obligation.

F6 · balance_after: In connection with the vesting of the RSUs described above, 51 DERs vested, resulting in the Reporting Person holding 295 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.

SEC source: 0001225208-21-000721 · doc4.xml · nonDerivative · entry 3

Callen David · CIK 0001636160 · Sr VP & Chief Accounting Offic

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,379

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · price: In connection with the vesting of the RPSUs described above, an incremental 494 DERs vested. 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 to which they relate and may only be settled in NRG common stock. Each dividend equivalent right is the economic equivalent of one share of NRG common stock.

SEC source: 0001225208-21-000721 · doc4.xml · nonDerivative · entry 2

Callen David · CIK 0001636160 · Sr VP & Chief Accounting Offic

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,885

F2 · shares: Represents Restricted Stock Units issued to the Reporting Person under NRG Energy, Inc.'s Amended and Restated Long-Term Incentive Plan ("LTIP").

F3 · price: Each RSU is equivalent in value to one share of NRG's Common Stock, par value $.01 per share. The Reporting Person will receive from NRG one such share of Common Stock for each RSU that will vest ratably over a three year period beginning on the first anniversary of the date of grant.

SEC source: 0001225208-21-000721 · doc4.xml · nonDerivative · entry 1

Callen David · CIK 0001636160 · Sr VP & Chief Accounting Offic

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 41,304

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The Reporting Person was issued 9,088 RPSUs by NRG under the LTIP on January 2, 2018 that vested on January 2, 2021. On the vesting date the Reporting Person was entitled to receive a maximum of 18,176 shares of Common Stock if the company achieved 100% increase in total shareholder return since the grant date (the "Maximum"), 9,088 shares of Common Stock if there is no change in total shareholder return since the grant date (the "Target") or 2,272 shares of Common Stock if there is a 25% decrease in total shareholder return since the grant date (the "Threshold"). The Reporting Person wouldnot have received any shares of Common Stock if total shareholder return had decreased by more than 25% since the grant date. The number of shares that the Reporting Person could have received in interpolated for total shareholder return fall between Threshold, Target and Maximum levels. On January 2, 2021 the reporting person vested in 11,451 shares.

SEC source: 0001225208-21-001548 · doc4a.xml · nonDerivative · entry 4

Gutierrez Mauricio · CIK 0001428578 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 990,296

F4 · price: The Reporting Person elected to satisfy their tax withholding obligation upon the exchange of common stock for RPSUs having a value on the date of the exchange equal to the withholding obligation. Thisform reflects the surrender of 65,833 shares of common stock to satisfy the grantee's tax withholding obligation

SEC source: 0001225208-21-001548 · doc4a.xml · nonDerivative · entry 3

Gutierrez Mauricio · CIK 0001428578 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,056,129

F3 · price: On January 2, 2020, the Reporting Person was issued 48,401 Restricted Stock Units ("RSUs") by NRG Energy, Inc. under NRG Energy, Inc.'s Amended and Restated Long Term Incentive Plan. Each RSU is equivalentin value to one share of NRG's common stock, par value $.01. On January 2, 2021 16,117 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 8,541 shares of common stock to satisfy the grantee's tax withholding obligation.

SEC source: 0001225208-21-001548 · doc4a.xml · nonDerivative · entry 2

Gutierrez Mauricio · CIK 0001428578 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,064,670

F2 · price: On January 2, 2019, the Reporting Person was issued 47,842 Restricted Stock Units ("RSUs") by NRG Energy, Inc. under NRG Energy, Inc.'s Amended and Restated Long Term Incentive Plan. Each RSU is equivalentin value to one share of NRG's common stock, par value $.01. On January 2, 2021 15,931 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 7,593 shares of common stock to satisfy the grantee's tax withholding obligation.

SEC source: 0001225208-21-001548 · doc4a.xml · nonDerivative · entry 1

Gutierrez Mauricio · CIK 0001428578 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,072,263

F1 · price: This Form 4/A is filed to correct the number of shares wittheld to cover for taxes as described in this and the footnotes below. On January 2, 2018, the Reporting Person was issued 59,692 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 January 2, 2021 19,938 shares vested. The Reporting Person elected to satisfy their tax obligation upon the exchange of common stock for RSUs having avalue on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 7,454 shares of common stock to satisfy the grantee's tax withholding obligation.

SEC source: 0001225208-21-001547 · doc4a.xml · nonDerivative · entry 4

Andrews Kirkland B · CIK 0001529284 · Exec VP & Chief Financial Offi

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 288,436

F4 · price: The Reporting Person elected to satisfy their tax withholding obligation upon the exchange of common stock for RPSUs having a value on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 15,072 shares of common stock to satisfy the grantee's tax withholding obligation

SEC source: 0001225208-21-001547 · doc4a.xml · nonDerivative · entry 3

Andrews Kirkland B · CIK 0001529284 · Exec VP & Chief Financial Offi

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 303,508

F3 · price: On January 2, 2018, the Reporting Person was issued 15,427 Restricted Stock Units ("RSUs") by NRG Energy, Inc. under NRG Energy, Inc.'s Amended and Restated Long Term Incentive Plan. Each RSU is equivalentin value to one share of NRG's common stock, par value $.01. On January 2, 2021 5,153 shares vested. The Reporting Person elected to satisfy their tax obligation upon the exchange of common stock for RSUs having avalue on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 2,029 shares of common stock to satisfy the grantee's tax withholding obligation.

SEC source: 0001225208-21-001547 · doc4a.xml · nonDerivative · entry 2

Andrews Kirkland B · CIK 0001529284 · Exec VP & Chief Financial Offi

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 305,537

F2 · price: On January 2, 2020, the Reporting Person was issued 12,102 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 January 2, 2021 4,029 shares vested. The Reporting Person elected to satisfy their tax obligation upon the exchange of common stock for RSUs having avalue on the date of the exchange equal to the withholding obligation. This form reflects the surrender of 1,437 shares of common stock to satisfy the grantee's tax withholding obligation.

SEC source: 0001225208-21-001547 · doc4a.xml · nonDerivative · entry 1

Andrews Kirkland B · CIK 0001529284 · Exec VP & Chief Financial Offi

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 306,974

F1 · price: This Form 4/A is filed to correct the number of shares withheld to cover for taxes as described in this and the footnotes below. On January 2, 2019, the Reporting Person was issued 11,962 Restricted Stock Units ("RSUs") by NRG Energy, Inc. under NRG Energy, Inc.'s Amended and Restated Long Term Incentive Plan. Each RSU is equivalentin value to one share of NRG's common stock, par value $.01. On January 2, 2021 3,983 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 1,418 shares of common stock to satisfy the grantee's tax withholding obligation.

SEC source: 0001225208-21-000439 · doc4.xml · derivative · entry 13

Killinger Elizabeth R · CIK 0001662519 · Exec VP, Retail

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $.01 per share · 4,278 shares

Expires 2021-01-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001225208-21-000439 · doc4.xml · nonDerivative · entry 2

Killinger Elizabeth R · CIK 0001662519 · Exec VP, Retail

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129,759

F1 · price: This transaction was executed in multiple trades at prices ranging from $36.36 to $36.85. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001225208-21-000439 · doc4.xml · nonDerivative · entry 1

Killinger Elizabeth R · CIK 0001662519 · Exec VP, Retail

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 134,037

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001225208-21-000073 · doc4.xml · nonDerivative · entry 1

Callen David · CIK 0001636160 · Sr VP & Chief Accounting Offic

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,853

F1 · price: This transaction was executed in multiple trades at prices ranging from $35.56 to $36.20. The price above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares at which the transaction was effected. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001225208-20-014832 · doc4.xml · nonDerivative · entry 1

Callen David · CIK 0001636160 · Sr VP & Chief Accounting Offic

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,853

SEC source: 0001225208-20-013066 · doc4.xml · nonDerivative · entry 1

Gaudette Robert J · CIK 0001505252 · Sr VP, Business Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,693

F1 · price: Represents dividend equivalent rights accrued on the Reporting Person's deferred stock units, which become exercisable proportionately with the deferred stock units to which they relate and may only be settled in NRG common stock. Each dividend equivalent right is the economic equivalent of one share of NRG common stock.

F2 · balance_after: Includes 437 dividend equivalent rights.

SEC source: 0001225208-20-013065 · doc4.xml · nonDerivative · entry 1

Callen David · CIK 0001636160 · Sr VP & Chief Accounting Offic

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,853

F1 · price: Represents dividend equivalent rights accrued on the Reporting Person's deferred stock units, which become exercisable proportionately with the deferred stock units to which they relate and may only be settled in NRG common stock. Each dividend equivalent right is the economic equivalent of one share of NRG common stock.

F2 · balance_after: Includes 346 dividend equivalent rights and 163 shares acquired under NRG Energy, Inc.'s Employee Stock Purchase Plan since the Reporting Person's last filing.

SEC source: 0001225208-20-013064 · doc4.xml · nonDerivative · entry 1

Killinger Elizabeth R · CIK 0001662519 · Exec VP, Retail

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129,759

F1 · price: Represents dividend equivalent rights accrued on the Reporting Person's deferred stock units, which become exercisable proportionately with the deferred stock units to which they relate and may only be settled in NRG common stock. Each dividend equivalent right is the economic equivalent of one share of NRG common stock.

F2 · balance_after: Includes 767 dividend equivalent rights and 111 shares acquired under NRG Energy, Inc.'s Employee Stock Purchase Plan since the Reporting Person's last filing.

SEC source: 0001225208-20-013063 · doc4.xml · nonDerivative · entry 1

Moser Christopher · CIK 0001726304 · Exec VP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 115,871

F1 · price: Represents dividend equivalent rights accrued on the Reporting Person's deferred stock units, which become exercisable proportionately with the deferred stock units to which they relate and may only be settled in NRG common stock. Each dividend equivalent right is the economic equivalent of one share of NRG common stock.

F2 · balance_after: Includes 766 dividend equivalent rights.