Transaction Details

Footnotes

Held in the Northrop Grumman Savings Plan (the "Plan"), a qualified defined contribution plan, as of February 11, 2026. Share totals with respect to the Plan are based upon unit accounting and therefore may reflect a change in units attributable to an individual though no acquisition or disposition occurred. | Each Restricted Performance Stock Right ("RPSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d). | The RPSRs acquired include (i) 2,100.48 vested RPSRs with respect to the measurement period ended 12/31/25 acquired due to settlement of the RPSRs granted under the 2011 Long-Term Incentive Stock Plan ("2011 LTISP") on 2/16/23 that resulted in settlement at 148% of the target award; and (ii) 3,686 unvested RPSRs granted under the 2024 Long-Term Incentive Stock Plan (the "2024 LTISP") on 2/11/26 with a measurement period ending on 12/31/28. A total of 6,476.48 shares were issued in settlement of the 2023 RPSRs with a measurement period that ended 12/31/25, and the target award amount of 4,376 RPSRs was previously reported in connection with the grant of the 2023 RPSRs. | Total amount includes (i) 6,476.48 vested RPSRs granted under the 2011 LTISP on 2/16/23 with a measurement period ended on 12/31/25; (ii) 5,133 RPSRs granted under the 2011 LTISP on 2/14/24 with a measurement period ending on 12/31/26; (iii) 5,355 RPSRs granted under the 2024 LTISP on 2/18/25 with a measurement period ending on 12/31/27; and (iv) 3,686 RPSRs granted under the 2024 LTISP on 2/11/26 with a measurement period ending on 12/31/28. | Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares in Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. | The RSRs were granted under the 2024 LTISP on 2/11/26 and will vest on 2/12/29. | Total amount includes (i) 2,017 RSRs granted under the 2011 LTISP on 2/16/23 that will vest on 2/17/26; (ii) 2,356 RSRs granted under the 2011 LTISP on 2/14/24 that will vest on 2/16/27; (iii) 2,456 RSRs granted under the 2024 LTISP on 2/18/25 that will vest on 2/18/28; and (iv) 1,701 RSRs granted under 2024 LTISP on 2/11/26 that will vest on 2/12/29. | Total amount includes (i) 5,133 RPSRs granted under the 2011 LTISP on 2/14/24 with a measurement period ending on 12/31/26; (ii) 5,355 RPSRs granted under the 2024 LTISP on 2/18/25 with a measurement period ending on 12/31/27; and (iii) 3,686 RPSRs granted under the 2024 LTISP on 2/11/26 with a measurement period ending 12/31/28.