NOC

SEC source: 0001628280-25-000717 · wk-form4_1736271472.xml · nonDerivative · entry 1

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,158

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

F2 · price: Represents the weighted average sale price of $454.26 rounded to the nearest hundredth. The highest price at which the shares were sold was $454.27 and the lowest price at which the shares were sold was $454.25 The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-25-000020 · wk-form4_1735841147.xml · nonDerivative · entry 1

Brown Marianne Catherine · CIK 0001804183 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,056

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F2 · shares: 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: 0001628280-25-000019 · wk-form4_1735841099.xml · nonDerivative · entry 1

KRISHNA ARVIND · CIK 0001629898 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,571

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F2 · shares: 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: 0001628280-25-000018 · wk-form4_1735841050.xml · nonDerivative · entry 1

Robinson Graham · CIK 0001810641 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,932

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F2 · shares: 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: 0001628280-24-050158 · wk-form4_1733501787.xml · nonDerivative · entry 6

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,155

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

F6 · price: Represents the weighted average sale price of $483.62 rounded to the nearest hundredth. The highest price at which the shares were sold was $483.83 and the lowest price at which the shares were sold was $483.32. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-050158 · wk-form4_1733501787.xml · nonDerivative · entry 5

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,158

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

F5 · price: Represents the weighted average sale price of $482.70 rounded to the nearest hundredth. The highest price at which the shares were sold was $482.88 and the lowest price at which the shares were sold was $482.53. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-050158 · wk-form4_1733501787.xml · nonDerivative · entry 4

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,160

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

F4 · price: Represents the weighted average sale price of $481.67 rounded to the nearest hundredth. The highest price at which the shares were sold was $481.83 and the lowest price at which the shares were sold was $481.00. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-050158 · wk-form4_1733501787.xml · nonDerivative · entry 3

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,178

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

F3 · price: Represents the weighted average sale price of $480.54 rounded to the nearest hundredth. The highest price at which the shares were sold was $480.64 and the lowest price at which the shares were sold was $480.39. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-050158 · wk-form4_1733501787.xml · nonDerivative · entry 2

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,183

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

F2 · price: Represents the weighted average sale price of $479.56 rounded to the nearest hundredth. The highest price at which the shares were sold was $479.77 and the lowest price at which the shares were sold was $479.34. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-050158 · wk-form4_1733501787.xml · nonDerivative · entry 1

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,187

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: 0001628280-24-047458 · wk-form4_1731509736.xml · nonDerivative · entry 1

Davies Benjamin R. · CIK 0002026085 · CVP & Pres. Defense Systems

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 536.92

F1 · shares: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 6, 2024.

SEC source: 0001628280-24-045502 · wk-form4_1730908111.xml · nonDerivative · entry 8

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,188

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: 0001628280-24-045502 · wk-form4_1730908111.xml · nonDerivative · entry 7

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,195

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: 0001628280-24-045502 · wk-form4_1730908111.xml · nonDerivative · entry 6

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,202

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: 0001628280-24-045502 · wk-form4_1730908111.xml · nonDerivative · entry 5

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,203

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

F4 · price: Represents the weighted average sale price of $509.57 rounded to the nearest hundredth. The highest price at which the shares were sold was $509.95 and the lowest price at which the shares were sold was $509.14. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-045502 · wk-form4_1730908111.xml · nonDerivative · entry 4

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,212

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

F3 · price: Represents the weighted average sale price of $508.70 rounded to the nearest hundredth. The highest price at which the shares were sold was $508.82 and the lowest price at which the shares were sold was $508.55. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-045502 · wk-form4_1730908111.xml · nonDerivative · entry 3

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,216

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

F2 · price: Represents the weighted average sale price of $507.48 rounded to the nearest hundredth. The highest price at which the shares were sold was $507.68 and the lowest price at which the shares were sold was $507.08. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-045502 · wk-form4_1730908111.xml · nonDerivative · entry 2

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,219

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: 0001628280-24-045502 · wk-form4_1730908111.xml · nonDerivative · entry 1

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,220

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: 0001628280-24-042548 · wk-form4_1728420820.xml · nonDerivative · entry 6

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,221

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

F6 · balance_after: Amount includes (i) 298 shares of common stock; and (ii) 3,923 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: 0001628280-24-042548 · wk-form4_1728420820.xml · nonDerivative · entry 5

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,222

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

F5 · balance_after: Represents the weighted average sale price of $536.18 rounded to the nearest hundredth. The highest price at which the shares were sold was $536.60 and the lowest price at which the shares were sold was $536.07. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-042548 · wk-form4_1728420820.xml · nonDerivative · entry 4

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,241

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

F4 · balance_after: Represents the weighted average sale price of $535.65 rounded to the nearest hundredth. The highest price at which the shares were sold was $535.97 and the lowest price at which the shares were sold was $535.16. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-042548 · wk-form4_1728420820.xml · nonDerivative · entry 3

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,246

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

F3 · balance_after: Represents the weighted average sale price of $534.45 rounded to the nearest hundredth. The highest price at which the shares were sold was $534.98 and the lowest price at which the shares were sold was $534.17. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-042548 · wk-form4_1728420820.xml · nonDerivative · entry 2

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,251

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

F2 · balance_after: Represents the weighted average sale price of $533.56 rounded to the nearest hundredth. The highest price at which the shares were sold was $533.70 and the lowest price at which the shares were sold was $533.41. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-042548 · wk-form4_1728420820.xml · nonDerivative · entry 1

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,253

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: 0001628280-24-041755 · wk-form4_1727816364.xml · nonDerivative · entry 1

Brown Marianne Catherine · CIK 0001804183 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,916

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 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 2024 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: 0001628280-24-041753 · wk-form4_1727816307.xml · nonDerivative · entry 1

KRISHNA ARVIND · CIK 0001629898 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,488

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 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 2024 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: 0001628280-24-041752 · wk-form4_1727816251.xml · nonDerivative · entry 1

Robinson Graham · CIK 0001810641 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,878

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 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 2024 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: 0001628280-24-039652 · wk-form4_1725645882.xml · nonDerivative · entry 9

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,239

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: 0001628280-24-039652 · wk-form4_1725645882.xml · nonDerivative · entry 8

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,241

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: 0001628280-24-039652 · wk-form4_1725645882.xml · nonDerivative · entry 7

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,242

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: 0001628280-24-039652 · wk-form4_1725645882.xml · nonDerivative · entry 6

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,243

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: 0001628280-24-039652 · wk-form4_1725645882.xml · nonDerivative · entry 5

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,244

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

F5 · price: Represents the weighted average sale price of $520.60 rounded to the nearest hundredth. The highest price at which the shares were sold was $520.75 and the lowest price at which the shares were sold was $520.28. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-039652 · wk-form4_1725645882.xml · nonDerivative · entry 4

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,249

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

F4 · price: Represents the weighted average sale price of $519.59 rounded to the nearest hundredth. The highest price at which the shares were sold was $519.83 and the lowest price at which the shares were sold was $519.20. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-039652 · wk-form4_1725645882.xml · nonDerivative · entry 3

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,258

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

F3 · price: Represents the weighted average sale price of $518.42 rounded to the nearest hundredth. The highest price at which the shares were sold was $518.92 and the lowest price at which the shares were sold was $518.04. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4

SEC source: 0001628280-24-039652 · wk-form4_1725645882.xml · nonDerivative · entry 2

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,268

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

F2 · price: Represents the weighted average sale price of $517.82 rounded to the nearest hundredth. The highest price at which the shares were sold was $517.96 and the lowest price at which the shares were sold was $517.54. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-039652 · wk-form4_1725645882.xml · nonDerivative · entry 1

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,271

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: 0001628280-24-039073 · wk-form4_1725384371.xml · nonDerivative · entry 6

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,272

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

F5 · price: Represents the weighted average sale price of $518.57 rounded to the nearest hundredth. The highest price at which the shares were sold was $518.82 and the lowest price at which the shares were sold was $518.25. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-039073 · wk-form4_1725384371.xml · nonDerivative · entry 5

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,280

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

F4 · price: Represents the weighted average sale price of $517.51 rounded to the nearest hundredth. The highest price at which the shares were sold was $517.68 and the lowest price at which the shares were sold was $517.15. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-039073 · wk-form4_1725384371.xml · nonDerivative · entry 4

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,285

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

F3 · price: Represents the weighted average sale price of $516.77 rounded to the nearest hundredth. The highest price at which the shares were sold was $516.98 and the lowest price at which the shares were sold was $516.41. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-039073 · wk-form4_1725384371.xml · nonDerivative · entry 3

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,293

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: 0001628280-24-039073 · wk-form4_1725384371.xml · nonDerivative · entry 2

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,295

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

F2 · price: Represents the weighted average sale price of $513.36 rounded to the nearest hundredth. The highest price at which the shares were sold was $513.94 and the lowest price at which the shares were sold was $513.13. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001628280-24-039073 · wk-form4_1725384371.xml · nonDerivative · entry 1

WELSH MARK A III · CIK 0001692554 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,304

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: 0001628280-24-034761 · wk-form4_1722889761.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,633.925

F1 · shares: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2024.

SEC source: 0001628280-24-034019 · wk-form4_1722532330.xml · nonDerivative · entry 1

Turley James S · CIK 0001580994 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,847

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 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 2024 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F2 · balance_after: Amount includes (i) 635 shares of common stock; and (ii) 5,212 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: 0001628280-24-034018 · wk-form4_1722532300.xml · nonDerivative · entry 1

SCHOEWE THOMAS M · CIK 0001161375 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,635

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 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 2024 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3.

F2 · balance_after: Amount includes (i) 3,160 shares of common stock; and (ii) 12,475 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: 0001628280-24-034017 · wk-form4_1722532273.xml · nonDerivative · entry 1

ROUGHEAD GARY · CIK 0001543052 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,146

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 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 2024 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: 0001628280-24-034016 · wk-form4_1722532243.xml · nonDerivative · entry 1

Ross Kimberly A. · CIK 0001536350 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 847

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 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 2024 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: 0001628280-24-034015 · wk-form4_1722532216.xml · nonDerivative · entry 2

Robinson Graham · CIK 0001810641 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,830

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 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 2024 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: 0001628280-24-034015 · wk-form4_1722532216.xml · nonDerivative · entry 1

Robinson Graham · CIK 0001810641 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,786

F1 · kind: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 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 2024 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.