Insider Trading Arrangements

3 Months Ended

Jun. 30, 2026

During the three months ended June 30, 2026, the following directors or officers of the Company adopted or terminated a ‘Rule 10b5-1 trading arrangement’ or ‘non-Rule 10b5-1 trading arrangement,’ as each term is defined in Item 408(a) of Regulation S-K, as described in the table below:

Name

Title

Date Adopted

Character of Trading Arrangement

Aggregate Number of Shares of Common Stock to be Purchased or Sold Pursuant to Trading Arrangement(a)

Duration

Date Terminated

Dak Liyanearachchi

Executive Vice President, Chief Technology Officer

6/1/2026

Rule 10b5-1 Trading Arrangement

Up to 26,156 shares to be Sold

1/4/2027-6/30/2027

N/A

G. Alfred Spencer

Senior Vice President, Chief Accounting Officer

6/5/2026

Rule 10b5-1 Trading Arrangement

Up to 14,900b) shares to be Sold

9/4/2026-5/31/2027

N/A

(a)Potential sales may be subject to certain price limitations set forth in the 10b5-1 plans and therefore actual number of shares sold could vary if certain minimum stock prices are not met

(b)Represents approximate number of shares to be sold based on outstanding awards expected to vest during the period, where certain underlying performance share awards are being calculated at target. Actual number of shares to be sold will depend on actual vesting, the number of shares withheld by NRG to satisfy tax withholding obligations and vesting of dividend equivalent rights

Non-Rule 10b5-1 Arrangement Adopted

false

Rule 10b5-1 Arrangement Terminated

false

Non-Rule 10b5-1 Arrangement Terminated

false

Dak Liyanearachchi [Member]

Trading Arrangements, by Individual

Name

Dak Liyanearachchi

Title

Executive Vice President, Chief Technology Officer