NOC

SEC source: 0001628280-22-002862 · wf-form4_164504868255932.xml · nonDerivative · entry 2

Addison Ann M · CIK 0001682425 · Corp VP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,411.8

SEC source: 0001628280-22-002862 · wf-form4_164504868255932.xml · nonDerivative · entry 1

Addison Ann M · CIK 0001682425 · Corp VP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,944.8

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: 0001628280-22-002861 · wf-form4_164504851119296.xml · derivative · entry 4

Purvis Shawn N · CIK 0001725609 · CVP, Pres, Enterprise Svcs

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,497

Underlying: Common Stock · 1,970 shares

Expires not disclosed

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 · derivative.exercise_price: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F2 · derivative.exercise_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F3 · derivative.expiration_date: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the LTISP on 2/13/19 that vested on 2/14/22.

SEC source: 0001628280-22-002861 · wf-form4_164504851119296.xml · nonDerivative · entry 2

Purvis Shawn N · CIK 0001725609 · CVP, Pres, Enterprise Svcs

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,977.42

SEC source: 0001628280-22-002861 · wf-form4_164504851119296.xml · nonDerivative · entry 1

Purvis Shawn N · CIK 0001725609 · CVP, Pres, Enterprise Svcs

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,578.42

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: 0001628280-22-002859 · wf-form4_164504822511012.xml · derivative · entry 4

Jones Thomas H · CIK 0001834674 · CVP & Pres Aeronautics Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,643

Underlying: Common Stock · 410 shares

Expires not disclosed

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 · derivative.exercise_price: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F2 · derivative.exercise_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F3 · derivative.expiration_date: Shares issued upon vesting of RSRs granted under the Long-Term Incentive Stock Plan ("LTISP") on 2/13/19 that vested on 2/14/22.

SEC source: 0001628280-22-002859 · wf-form4_164504822511012.xml · nonDerivative · entry 3

Jones Thomas H · CIK 0001834674 · CVP & Pres Aeronautics Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,324.815

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001628280-22-002859 · wf-form4_164504822511012.xml · nonDerivative · entry 2

Jones Thomas H · CIK 0001834674 · CVP & Pres Aeronautics Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,441.815

SEC source: 0001628280-22-002859 · wf-form4_164504822511012.xml · nonDerivative · entry 1

Jones Thomas H · CIK 0001834674 · CVP & Pres Aeronautics Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,615.815

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: 0001628280-22-002855 · wf-form4_164504755977230.xml · derivative · entry 3

Ryan Lucy C · CIK 0001762551 · Corp VP, Communications

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,166

Underlying: Common Stock · 657 shares

Expires not disclosed

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: 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.

F1 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: Shares issued upon vesting of RSRs granted under the Long-Term Incentive Stock Plan ("LTISP") on 2/13/19 that vested on 2/14/22.

SEC source: 0001628280-22-002855 · wf-form4_164504755977230.xml · nonDerivative · entry 2

Ryan Lucy C · CIK 0001762551 · Corp VP, Communications

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,897.44

SEC source: 0001628280-22-002855 · wf-form4_164504755977230.xml · nonDerivative · entry 1

Ryan Lucy C · CIK 0001762551 · Corp VP, Communications

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,106.44

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: 0001628280-22-002854 · wf-form4_164504745519169.xml · derivative · entry 3

Petryszyn Mary D · CIK 0001791724 · CVP, Pres, Defense Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,829

Underlying: Common Stock · 487 shares

Expires not disclosed

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: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F1 · derivative.exercise_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F2 · derivative.expiration_date: Shares issued upon vesting of RSRs granted under the Long-Term Incentive Stock Plan ("LTISP") on 2/13/19 that vested on 2/14/22.

SEC source: 0001628280-22-002854 · wf-form4_164504745519169.xml · nonDerivative · entry 2

Petryszyn Mary D · CIK 0001791724 · CVP, Pres, Defense Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,823.3

SEC source: 0001628280-22-002854 · wf-form4_164504745519169.xml · nonDerivative · entry 1

Petryszyn Mary D · CIK 0001791724 · CVP, Pres, Defense Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,973.3

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: 0001628280-22-002852 · wf-form4_164504728010729.xml · derivative · entry 3

Wilson Thomas L Jr · CIK 0001901418 · CVP and Pres. Space Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 640

Underlying: Common Stock · 328 shares

Expires not disclosed

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: 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.

F1 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: Shares issued upon vesting of RSRs granted under the Long-Term Incentive Stock Plan ("LTISP") on 2/13/19 that vested on 2/14/22.

SEC source: 0001628280-22-002852 · wf-form4_164504728010729.xml · nonDerivative · entry 2

Wilson Thomas L Jr · CIK 0001901418 · CVP and Pres. Space Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,849.3

SEC source: 0001628280-22-002852 · wf-form4_164504728010729.xml · nonDerivative · entry 1

Wilson Thomas L Jr · CIK 0001901418 · CVP and Pres. Space Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,957.3

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: 0001628280-22-001783 · wf-form4_164392585630378.xml · nonDerivative · entry 1

Petryszyn Mary D · CIK 0001791724 · CVP, Pres, Defense Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,486.3

SEC source: 0001628280-22-000185 · wf-form4_164133110738064.xml · nonDerivative · entry 1

KRAPEK KARL J · CIK 0001238288 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,067

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F1 · shares: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F2 · balance_after: Amount includes (i) 1,645 shares of common stock; and (ii) 22,422 shares of common stock, including dividends, held in a stock unit account pursuant to the Plan. Dividends earned on shares held in the stock unit account were exempt from Section 16 and not reportable under Rule 16a-11.

SEC source: 0001628280-22-000177 · wf-form4_164133085831867.xml · nonDerivative · entry 1

Brown Marianne Catherine · CIK 0001804183 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,402

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F1 · shares: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F2 · balance_after: Represents shares of common stock, including dividends, held in a stock unit account pursuant to the Plan. Dividends earned on shares held in the stock unit account were exempt from Section 16 and not reportable under Rule 16a-11.

SEC source: 0001628280-22-000175 · wf-form4_164133062707591.xml · derivative · entry 3

Larson Blake E · CIK 0001313857 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,112

Underlying: Common Stock · 1,414 shares

Expires not disclosed

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 · derivative.exercise_price: Each 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.

F1 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the 2011 Long-Term Incentive Stock Plan on 2/12/2020 that vested on 12/31/2021.

F2 · derivative.exercise_date: Each 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.

F1 · derivative.expiration_date: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the 2011 Long-Term Incentive Stock Plan on 2/12/2020 that vested on 12/31/2021.

SEC source: 0001628280-22-000175 · wf-form4_164133062707591.xml · nonDerivative · entry 2

Larson Blake E · CIK 0001313857 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,843.1

SEC source: 0001628280-22-000175 · wf-form4_164133062707591.xml · nonDerivative · entry 1

Larson Blake E · CIK 0001313857 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,288.1

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 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the 2011 Long-Term Incentive Stock Plan on 2/12/2020 that vested on 12/31/2021.

SEC source: 0001628280-21-024771 · wf-form4_163908557510962.xml · nonDerivative · entry 1

Caylor Mark A · CIK 0001559097 · CVP & Pres, Mission Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,419.15

F1 · shares: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001628280-21-024704 · wf-form4_163900151476141.xml · derivative · entry 4

Caylor Mark A · CIK 0001559097 · CVP & Pres, Mission Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,659

Underlying: Common Stock · 1,655 shares

Expires not disclosed

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: Each RSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F2 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the LTISP on 12/4/2018 that vested on 12/6/2021.

F4 · derivative.exercise_date: Each RSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F2 · derivative.expiration_date: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the LTISP on 12/4/2018 that vested on 12/6/2021.

SEC source: 0001628280-21-024704 · wf-form4_163900151476141.xml · nonDerivative · entry 2

Caylor Mark A · CIK 0001559097 · CVP & Pres, Mission Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,846.15

F1 · date: In accordance with the terms of the 2011 Long-Term Incentive Stock Plan ("LTISP"), because the third anniversary of the grant (December 4, 2021) fell on a weekend, the award shares vested on December 6, 2021, the next business day. The vested award shares were valued based on the Company's closing stock price on December 6, 2021. The shares were distributed into the participant's account on December 7, 2021.

SEC source: 0001628280-21-024704 · wf-form4_163900151476141.xml · nonDerivative · entry 1

Caylor Mark A · CIK 0001559097 · CVP & Pres, Mission Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,646.15

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 · date: In accordance with the terms of the 2011 Long-Term Incentive Stock Plan ("LTISP"), because the third anniversary of the grant (December 4, 2021) fell on a weekend, the award shares vested on December 6, 2021, the next business day. The vested award shares were valued based on the Company's closing stock price on December 6, 2021. The shares were distributed into the participant's account on December 7, 2021.

F2 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the LTISP on 12/4/2018 that vested on 12/6/2021.

SEC source: 0001628280-21-023366 · wf-form4_163701053046109.xml · nonDerivative · entry 1

KRAPEK KARL J · CIK 0001238288 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,882

F1 · balance_after: Amount includes (i) 1,645 shares of common stock; and (ii) 22,237 shares of common stock held in a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan.

SEC source: 0001628280-21-021421 · wf-form4_163596791376295.xml · derivative · entry 3

Ryan Lucy C · CIK 0001762551 · Corp VP, Communications

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,823

Underlying: Common Stock · 303 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: Each 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.

F2 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the LTISP on 10/30/2018 that vested on 11/1/2021.

F3 · derivative.exercise_date: Each 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.

F2 · derivative.expiration_date: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the LTISP on 10/30/2018 that vested on 11/1/2021.

SEC source: 0001628280-21-021421 · wf-form4_163596791376295.xml · nonDerivative · entry 2

Ryan Lucy C · CIK 0001762551 · Corp VP, Communications

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,449.44

F1 · date: In accordance with the terms of the 2011 Long-Term Incentive Stock Plan ("LTISP"), because the third anniversary of the grant (October 30, 2021) fell on a weekend, the award shares vested on November 1, 2021, the next business day. The vested award shares were valued based on the Company's closing stock price on November 1, 2021. The shares will be distributed into the participant's account on November 2, 2021.

SEC source: 0001628280-21-021421 · wf-form4_163596791376295.xml · nonDerivative · entry 1

Ryan Lucy C · CIK 0001762551 · Corp VP, Communications

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,541.44

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 · date: In accordance with the terms of the 2011 Long-Term Incentive Stock Plan ("LTISP"), because the third anniversary of the grant (October 30, 2021) fell on a weekend, the award shares vested on November 1, 2021, the next business day. The vested award shares were valued based on the Company's closing stock price on November 1, 2021. The shares will be distributed into the participant's account on November 2, 2021.

F2 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the LTISP on 10/30/2018 that vested on 11/1/2021.

SEC source: 0001628280-21-021420 · wf-form4_163596783712720.xml · derivative · entry 4

Addison Ann M · CIK 0001682425 · Corp VP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,248

Underlying: Common Stock · 891 shares

Expires not disclosed

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: Each Restricted Stock Right (RSR) represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F2 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the LTISP on 10/31/2018 that vested on 11/1/2021.

F4 · derivative.exercise_date: Each Restricted Stock Right (RSR) represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F2 · derivative.expiration_date: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the LTISP on 10/31/2018 that vested on 11/1/2021.

SEC source: 0001628280-21-021420 · wf-form4_163596783712720.xml · nonDerivative · entry 2

Addison Ann M · CIK 0001682425 · Corp VP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,193.8

F1 · date: In accordance with the terms of the 2011 Long-Term Incentive Stock Plan ("LTISP"), because the third anniversary of the grant (October 30, 2021) fell on a weekend, the award shares vested on November 1, 2021, the next business day. The vested award shares were valued based on the Company's closing stock price on November 1, 2021. The shares will be distributed into the participant's account on November 2, 2021.

SEC source: 0001628280-21-021420 · wf-form4_163596783712720.xml · nonDerivative · entry 1

Addison Ann M · CIK 0001682425 · Corp VP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,595.8

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 · date: In accordance with the terms of the 2011 Long-Term Incentive Stock Plan ("LTISP"), because the third anniversary of the grant (October 30, 2021) fell on a weekend, the award shares vested on November 1, 2021, the next business day. The vested award shares were valued based on the Company's closing stock price on November 1, 2021. The shares will be distributed into the participant's account on November 2, 2021.

F2 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the LTISP on 10/31/2018 that vested on 11/1/2021.

SEC source: 0001628280-21-019570 · wf-form4_163337986322665.xml · derivative · entry 3

Larson Blake E · CIK 0001313857 · CVP & Pres, Space Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,526

Underlying: Common Stock · 1,824 shares

Expires not disclosed

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 · derivative.exercise_price: Each RSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F1 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the 2011 Long-Term Incentive Stock Plan on 2/16/2021 that vested on 9/30/2021.

F2 · derivative.exercise_date: Each RSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F1 · derivative.expiration_date: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the 2011 Long-Term Incentive Stock Plan on 2/16/2021 that vested on 9/30/2021.

SEC source: 0001628280-21-019570 · wf-form4_163337986322665.xml · nonDerivative · entry 2

Larson Blake E · CIK 0001313857 · CVP & Pres, Space Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,874.1

SEC source: 0001628280-21-019570 · wf-form4_163337986322665.xml · nonDerivative · entry 1

Larson Blake E · CIK 0001313857 · CVP & Pres, Space Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,697.1

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 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the 2011 Long-Term Incentive Stock Plan on 2/16/2021 that vested on 9/30/2021.

SEC source: 0001628280-21-019567 · wf-form4_163337979808914.xml · nonDerivative · entry 1

KRAPEK KARL J · CIK 0001238288 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,682

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F1 · shares: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F2 · balance_after: Amount includes (i) 4,445 shares of common stock; and (ii) 22,237 shares of common stock, including dividends, held in a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan. Dividends earned on shares held in the stock unit account were exempt from Section 16 and not reportable under Rule 16a-11.

SEC source: 0001628280-21-019564 · wf-form4_163337970809137.xml · nonDerivative · entry 1

Brown Marianne Catherine · CIK 0001804183 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,273

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F1 · shares: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F2 · balance_after: Represents shares of common stock, including dividends, held in a stock unit account pursuant to the Plan. Dividends earned on shares held in the stock unit account were exempt from Section 16 and not reportable under Rule 16a-11.

SEC source: 0001628280-21-019041 · wf-form4_163233467005348.xml · derivative · entry 3

Warden Kathy J · CIK 0001559112 · Director · Chairman, CEO and President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,456

Underlying: Common Stock · 4,943 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: Each RSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F2 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the LTISP on 9/19/2018 that vested on 9/20/2021.

F3 · derivative.exercise_date: Each RSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F2 · derivative.expiration_date: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the LTISP on 9/19/2018 that vested on 9/20/2021.

SEC source: 0001628280-21-019041 · wf-form4_163233467005348.xml · nonDerivative · entry 2

Warden Kathy J · CIK 0001559112 · Director · Chairman, CEO and President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 115,838.29

F1 · date: In accordance with the terms of the 2011 Long-Term Incentive Stock Plan ("LTISP"), because the third anniversary of the grant (September 19, 2021) fell on a weekend, the award shares vested on September 20, 2021, the next business day. The vested award shares were valued based on the Company's closing stock price on September 20, 2021. The shares will be distributed into the participant's account on September 21, 2021.

SEC source: 0001628280-21-019041 · wf-form4_163233467005348.xml · nonDerivative · entry 1

Warden Kathy J · CIK 0001559112 · Director · Chairman, CEO and President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 118,068.29

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 · date: In accordance with the terms of the 2011 Long-Term Incentive Stock Plan ("LTISP"), because the third anniversary of the grant (September 19, 2021) fell on a weekend, the award shares vested on September 20, 2021, the next business day. The vested award shares were valued based on the Company's closing stock price on September 20, 2021. The shares will be distributed into the participant's account on September 21, 2021.

F2 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the LTISP on 9/19/2018 that vested on 9/20/2021.

SEC source: 0001628280-21-017259 · wf-form4_162932360038914.xml · nonDerivative · entry 1

Jones Thomas H · CIK 0001834674 · CVP & Pres Aeronautics Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,267.91

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001628280-21-017009 · wf-form4_162888714111136.xml · nonDerivative · entry 1

Robinson Graham · CIK 0001810641 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 358

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F1 · shares: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F2 · balance_after: Represents shares of common stock held in a stock unit account pursuant to the Plan.

SEC source: 0001628280-21-016419 · wf-form4_162862704164712.xml · nonDerivative · entry 1

Warden Kathy J · CIK 0001559112 · Director · Chairman, CEO and President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 113,125.29

SEC source: 0001628280-21-016258 · wf-form4_162854103836435.xml · nonDerivative · entry 1

Petryszyn Mary D · CIK 0001791724 · CVP, Pres, Defense Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,847.3

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001628280-21-016257 · wf-form4_162854094676310.xml · nonDerivative · entry 1

Caylor Mark A · CIK 0001559097 · CVP & Pres, Mission Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,991.15

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001628280-21-015957 · wf-form4_162820362673867.xml · nonDerivative · entry 1

Jones Thomas H · CIK 0001834674 · CVP & Pres Aeronautics Systems

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,502.91

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001628280-21-013436 · wf-form4_162525602834125.xml · nonDerivative · entry 1

KRAPEK KARL J · CIK 0001238288 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,499

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F1 · shares: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F2 · balance_after: Amount includes (i) 4,445 shares of common stock; and (ii) 22,054 shares of common stock, including dividends, held in a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan. Dividends earned on shares held in the stock unit account were exempt from Section 16 and not reportable under Rule 16a-11.