Mark A. Caylor - 15 Feb 2022 Form 4 Insider Report for NORTHROP GRUMMAN CORP /DE/ (NOC)

Footnote F1

Held in the Northrop Grumman Savings Plan (the Plan), a qualified defined contribution plan, as of February 15, 2022. 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.

Footnote F2

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 Long-Term Incentive Stock Plan ("LTISP") on 2/15/22 and will vest on 2/18/25.

Footnote F3

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).

Footnote F4

The RPSRs acquired include (i) 1,988 vested RPSRs with respect to the measurement period ended 12/31/21 acquired due to settlement of the RPSRs granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/13/19 that resulted in settlement at 122% of the target award; and (ii) 5,381 unvested RPSRs granted under the LTISP on 2/15/22 with a measurement period ending on 12/31/24. A total of 11,026 shares were issued in settlement of the 2019 RPSRs with a measurement period that ended 12/31/21, and the target award amount of 9,038 RPSRs was previously reported in connection with the grant of the 2019 RPSRs.