NOC / Northrop Grumman Corporation - SEC-arkivering, Årsberetning, Fuldmagtserklæring

Northrop Grumman Corporation
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LEI RIMU48P07456QXSO0R61
CIK 1133421
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Northrop Grumman Corporation
SEC Filings (Chronological Order)
Denne side giver en komplet, kronologisk liste over SEC-arkiveringer, eksklusive ejerskabsregistreringer, som vi leverer andre steder.
May 28, 2026 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT NORTHROP GRUMMAN CORPORATION (Exact name of the registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT NORTHROP GRUMMAN CORPORATION (Exact name of the registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organization) (Commission File Number) (I.R.S. Employer Identification No.) 2980 Fairview Park Drive, Falls Church, VA 22042

May 28, 2026 EX-1.01

Conflict Minerals Report Northrop Grumman Corporation For the Year Ended December 31, 2025

Exhibit 1.01 Conflict Minerals Report Conflict Minerals Report of Northrop Grumman Corporation For the Year Ended December 31, 2025 Section 1: Introduction This Conflict Minerals Report (“Report”) of Northrop Grumman Corporation (herein referred to as “Northrop Grumman,” the “company,” “we,” “us,” or “our”) has been prepared pursuant to Rule 13p-1 (the “Rule”) and Form SD promulgated under the Sec

May 21, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 20, 2026 NORTHROP GRUMMAN CORP

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 20, 2026 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organizati

May 13, 2026 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement Defin

April 21, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 21, 2026 NORTHROP GRUMMAN C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 21, 2026 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organiz

April 21, 2026 EX-15

Deloitte & Touche LLP

EX-15 Exhibit 15 Deloitte & Touche LLP Suite 800 7900 Tysons One Place McLean, VA 22102 USA www.

April 21, 2026 EX-10.1

NORTHROP GRUMMAN CORPORATION 2026 RESTRICTED STOCK RIGHTS GRANT AGREEMENT

Exhibit 10.1 NORTHROP GRUMMAN CORPORATION 2026 RESTRICTED STOCK RIGHTS GRANT AGREEMENT This 2026 Restricted Stock Rights Grant Agreement (“Agreement”) applies to certain “Restricted Stock Rights” (“RSRs”) granted by Northrop Grumman Corporation (the “Company”) in 2026 under its 2024 Long-Term Incentive Stock Plan. If you were granted an RSR award by the Company in 2026, the date of grant of your R

April 21, 2026 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Katie Young (Media) 908-520-9948 [email protected] Todd Ernst (Investors) 703-280-4535 [email protected] Northrop Grumman Reports First Quarter 2026 Financial Results •Reached agreements with the U.S. Air Force to increase B-21 production capacity and accelerate Sentinel initial operating capability •Continued strong demand with net awards of $9.8 billion an

April 21, 2026 EX-5.(A)

Client: 66093-00300

EX-5.(a) Exhibit 5(a) Client: 66093-00300 April 21, 2026 Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 Re: Northrop Grumman Corporation Registration Statement on Form S-3 Ladies and Gentlemen: We have acted as counsel to Northrop Grumman Corporation, a Delaware corporation (the “Company”), in connection with the preparation and filing with the Securities and Ex

April 21, 2026 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 NORTHROP GRUMMAN CORP /DE/ Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Debt Debt Securities 457(r) 0.

April 21, 2026 S-3ASR

As filed with the Securities and Exchange Commission on April 21, 2026

S-3ASR Table of Contents As filed with the Securities and Exchange Commission on April 21, 2026 Registration No.

April 21, 2026 EX-10.7

FORM OF [AMENDED AND RESTATED] INDEMNIFICATION AGREEMENT

Exhibit 10.7 FORM OF [AMENDED AND RESTATED] INDEMNIFICATION AGREEMENT This Agreement, dated as of the day of , 20 between Northrop Grumman Corporation, a Delaware corporation (the “Corporation”), and (“Indemnitee”). WHEREAS, it has come to the attention of the Board of Directors of the Corporation (the “Board”) that in certain circumstances highly competent persons have become more reluctant to se

April 21, 2026 EX-10.3

NORTHROP GRUMMAN CORPORATION 2026 RESTRICTED STOCK RIGHTS GRANT AGREEMENT

Exhibit 10.3 NORTHROP GRUMMAN CORPORATION 2026 RESTRICTED STOCK RIGHTS GRANT AGREEMENT This 2026 Restricted Stock Rights Grant Agreement (“Agreement”) applies to certain “Restricted Stock Rights” (“RSRs”) granted by Northrop Grumman Corporation (the “Company”) in 2026 under its 2024 Long-Term Incentive Stock Plan. If you were granted an RSR award by the Company in 2026, the date of grant of your R

April 21, 2026 EX-10.6

GROUP PERSONAL EXCESS LIABILITY POLICY

Exhibit 10.6 GROUP PERSONAL EXCESS LIABILITY POLICY INTRODUCTION This is your Chubb Group Personal Excess Liability Policy. Together with your Coverage Summary Certificate, it explains your coverages and other conditions of your insurance in detail. This policy is a contract between you and us. READ YOUR POLICY CAREFULLY and keep it in a safe place. Agreement We agree to provide the insurance desc

April 21, 2026 EX-10.4

NORTHROP GRUMMAN CORPORATION 2026 RESTRICTED PERFORMANCE STOCK RIGHTS GRANT AGREEMENT

Exhibit 10.4 NORTHROP GRUMMAN CORPORATION 2026 RESTRICTED PERFORMANCE STOCK RIGHTS GRANT AGREEMENT This 2026 Restricted Performance Stock Rights Grant Agreement (“Agreement”) applies to certain “Restricted Performance Stock Rights” (“RPSRs”) granted by Northrop Grumman Corporation (the “Company”) in 2026 under its 2024 Long-Term Incentive Stock Plan. If you were granted an RPSR award by the Compan

April 21, 2026 EX-10.2

NORTHROP GRUMMAN CORPORATION 2026 RESTRICTED PERFORMANCE STOCK RIGHTS GRANT AGREEMENT

Exhibit 10.2 NORTHROP GRUMMAN CORPORATION 2026 RESTRICTED PERFORMANCE STOCK RIGHTS GRANT AGREEMENT This 2026 Restricted Performance Stock Rights Grant Agreement (“Agreement”) applies to certain “Restricted Performance Stock Rights” (“RPSRs”) granted by Northrop Grumman Corporation (the “Company”) in 2026 under its 2024 Long-Term Incentive Stock Plan. If you were granted an RPSR award by the Compan

April 21, 2026 EX-15

NORTHROP GRUMMAN CORPORATION

NORTHROP GRUMMAN CORPORATION EXHIBIT 15 LETTER FROM INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM April 20, 2026 The Board of Directors and Shareholders of Northrop Grumman Corporation Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 We are aware that our report dated April 20, 2026, on our review of the interim financial information of Northrop Grumman Corporation and subsidiaries appearing in this Quarterly Report on Form 10-Q for the quarter ended March 31, 2026, is incorporated by reference in Registration Statement Nos.

April 21, 2026 EX-25.(A)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE

EX-25.(a) Exhibit 25(a) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON (Exact name of trustee as specified in its charter) New York 13-

April 21, 2026 EX-10.5

NORTHROP GRUMMAN CORPORATION 2026 RESTRICTED STOCK RIGHTS GRANT AGREEMENT

Exhibit 10.5 NORTHROP GRUMMAN CORPORATION 2026 RESTRICTED STOCK RIGHTS GRANT AGREEMENT This 2026 Restricted Stock Rights Grant Agreement (“Agreement”) applies to certain “Restricted Stock Rights” (“RSRs”) granted by Northrop Grumman Corporation (the “Company”) in 2026 under its 2024 Long-Term Incentive Stock Plan. The date of grant of your Special RSR award (the “Grant Date”) and the number of RSR

April 21, 2026 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2026 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-16411 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as

April 21, 2026 EX-23.(A)

Deloitte & Touche LLP

EX-23.(a) Exhibit 23(a) Deloitte & Touche LLP Suite 800 7900 Tysons One Place McLean, VA 22102 USA www.deloitte.com CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form S-3 of our reports dated January 26, 2026, relating to the consolidated financial statements of Northrop Grumman Corporation and subsidiaries,

April 3, 2026 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement Defin

April 3, 2026 ARS

ARS

About Us Northrop Grumman is a leading global aerospace and defense technology company.

February 13, 2026 EX-99.1

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99.1 News Release Contact: News Bureau [email protected] Christopher Grady Joins Northrop Grumman Board of Directors FALLS CHURCH, Va. – Feb. 13, 2026 – Northrop Grumman (NYSE: NOC) announced it has elected Admiral Christopher Grady, former vice chairman of the Joint Chiefs of Staff, to its board of directors. “With his storied military service and leadership, Admiral Grady will provide v

February 13, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 11, 2026 NORTHROP GRUMMAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 11, 2026 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organ

January 27, 2026 EX-21

NORTHROP GRUMMAN CORPORATION SUBSIDIARIES Address for all subsidiaries is: c/o NORTHROP GRUMMAN CORPORATION Office of the Secretary 2980 Fairview Park Drive Falls Church, Virginia 22042

Exhibit 21 NORTHROP GRUMMAN CORPORATION SUBSIDIARIES Address for all subsidiaries is: c/o NORTHROP GRUMMAN CORPORATION Office of the Secretary 2980 Fairview Park Drive Falls Church, Virginia 22042 Name of Subsidiary Jurisdiction of Incorporation Ownership Percentage Northrop Grumman Systems Corporation Delaware 100% Northrop Grumman Overseas Holdings, Inc.

January 27, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 27, 2026 NORTHROP GRUMMAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 27, 2026 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organ

January 27, 2026 EX-10.U

from Northrop Grumman Corporation to

Exhibit 10(u) 11/03/2025 John Greene [address] Dear John, Congratulations! We are delighted to extend you an offer for the position of Corporate Vice President, Chief Financial Officer, located in Falls Church, Virginia reporting to Kathy Warden.

January 27, 2026 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-16411 NORTHROP GRUMMAN CORPORATION

January 27, 2026 EX-97

Northrop Grumman Policy Regarding the Recoupment of Certain Incentive Compensation Payments

Exhibit 97 Northrop Grumman Policy Regarding the Recoupment of Certain Incentive Compensation Payments This policy of Northrop Grumman Corporation (“Northrop Grumman” or the “Company”) sets forth the Company’s policy regarding the recoupment of certain incentive compensation payments.

January 27, 2026 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Katie Young (Media) 908-520-9948 [email protected] Todd Ernst (Investors) 703-280-4535 [email protected] Northrop Grumman Reports Fourth Quarter and Full-Year 2025 Financial Results •Backlog grows to new company record of $95.7 billion driven by full year book to bill of 1.10 •Q4 sales increase 10 percent to $11.7 billion; 2025 sales of $42.0 billion •Q4 ope

January 27, 2026 EX-24

Power of Attorney

Exhibit 24 POWER OF ATTORNEY IN CONNECTION WITH THE 2025 ANNUAL REPORT ON FORM 10-K KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of NORTHROP GRUMMAN CORPORATION, a Delaware corporation, does hereby appoint KATHRYN G.

November 6, 2025 EX-99.1

Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, VA 22042-4511

Exhibit 99.1 News Release Contact: News Bureau [email protected] Todd Ernst (Investors) [email protected] Northrop Grumman Announces CFO Transition FALLS CHURCH, Va. – Nov. 6, 2025 – Northrop Grumman Corporation (NYSE: NOC) announces that its board of directors has elected John Greene corporate vice president and chief financial officer (CFO), effective Jan. 7, 2026. He will report to Kathy Ward

November 6, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 3, 2025 NORTHROP GRUMMAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 3, 2025 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organi

October 21, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 21, 2025 NORTHROP GRUMMAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 21, 2025 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organ

October 21, 2025 EX-15

NORTHROP GRUMMAN CORPORATION

NORTHROP GRUMMAN CORPORATION EXHIBIT 15 LETTER FROM INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM October 20, 2025 The Board of Directors and Shareholders of Northrop Grumman Corporation Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 We are aware that our report dated October 20, 2025, on our review of the interim financial information of Northrop Grumman Corporation and subsidiaries appearing in this Quarterly Report on Form 10-Q for the quarter ended September 30, 2025, is incorporated by reference in Registration Statement Nos.

October 21, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-16411 NORTHROP GRUMMAN CORPORATION (Exact name of registran

October 21, 2025 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Kate Mauss (Media) 410-832-6792 [email protected] Todd Ernst (Investors) 703-280-4535 [email protected] Northrop Grumman Reports Third Quarter 2025 Financial Results •Net awards increase to $12.2 billion; book to bill ratio of 1.17 •Sales increase 4 percent to $10.4 billion, organic sales1 increase 5 percent •Operating margin rate of 11.9 percent; segment op

September 2, 2025 EX-10.1

CREDIT AGREEMENT dated as of September 2, 2025, NORTHROP GRUMMAN CORPORATION, The LENDERS Party Hereto JPMORGAN CHASE BANK, N.A., as Administrative Agent JPMORGAN CHASE BANK, N.A., BOFA SECURITIES, INC., MIZUHO BANK, LTD. WELLS FARGO SECURITIES, LLC,

EX-10.1 Exhibit 10.1 Execution Version CREDIT AGREEMENT dated as of September 2, 2025, among NORTHROP GRUMMAN CORPORATION, The LENDERS Party Hereto and JPMORGAN CHASE BANK, N.A., as Administrative Agent JPMORGAN CHASE BANK, N.A., BOFA SECURITIES, INC., MIZUHO BANK, LTD. and WELLS FARGO SECURITIES, LLC, as Joint Lead Arrangers and Joint Bookrunners BANK OF AMERICA, N.A., MIZUHO BANK, LTD. and WELLS

September 2, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 2, 2025 NORTHROP GRUMMA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 2, 2025 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or other jurisdiction of incorporation) (Commi

July 22, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 22, 2025 NORTHROP GRUMMAN COR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 22, 2025 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organizat

July 22, 2025 EX-15

Letter from Independent Registered Public Accounting Firm

NORTHROP GRUMMAN CORPORATION EXHIBIT 15 LETTER FROM INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM July 21, 2025 The Board of Directors and Shareholders of Northrop Grumman Corporation Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 We are aware that our report dated July 21, 2025, on our review of the interim financial information of Northrop Grumman Corporation and subsidiaries appearing in this Quarterly Report on Form 10-Q for the quarter ended June 30, 2025, is incorporated by reference in Registration Statement Nos.

July 22, 2025 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Kate Mauss (Media) 410-832-6792 [email protected] Todd Ernst (Investors) 703-280-4535 [email protected] Northrop Grumman Reports Second Quarter 2025 Financial Results •Sales increase 9 percent sequentially to $10.4 billion •Operating margin rate of 13.8 percent; segment operating margin rate1 of 11.8 percent •Diluted earnings per share (EPS) of $8.15, inclus

July 22, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-16411 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as

July 22, 2025 EX-10.1

Non-Employee Director Compensation Term Sheet, effective May

Exhibit 10.1 Fees and Expenses (effective as of May 21, 2025) Retainer: Retainer fees are paid quarterly, at the end of each quarter. Fees are as follows: Annual cash retainer: Additional retainer for: Lead Independent Director: Audit and Risk Committee: Audit and Risk Committee chair: Compensation and Human Capital Committee chair: Nominating and Governance Committee chair: Policy Committee chair

June 10, 2025 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission file number: 1-16411 A. Full title of the plan and address of

June 10, 2025 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year ended December 31, 2024 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the transition period from to . Commission file number: 1-16411 A. Full title of the plan and address of t

May 29, 2025 EX-4.1

, between Northrop Grumman Corporation and The Bank of New York Mellon, as successor to JPMorgan Chase Bank, Trustee, to Indenture dated as of November 21, 2001 (incorporated by reference to Exhibit 4.1 to Form 8-K filed

EX-4.1 Exhibit 4.1 EXECUTION VERSION NORTHROP GRUMMAN CORPORATION AND THE BANK OF NEW YORK MELLON, TRUSTEE THIRTEENTH SUPPLEMENTAL INDENTURE Dated as of May 29, 2025 to INDENTURE Dated as of November 21, 2001 as amended and supplemented by the FIRST SUPPLEMENTAL INDENTURE Dated as of July 30, 2009 THIRD SUPPLEMENTAL INDENTURE Dated as of March 30, 2011 FOURTH SUPPLEMENTAL INDENTURE Dated as of Mar

May 29, 2025 8-K

Entry into a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 27, 2025 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or other jurisdiction of incorporation) (Commission

May 29, 2025 EX-1.1

Underwriting Agreement, dated May 27, 2025, among Northrop Grumman Corporation and Mizuho Securities USA LLC, Goldman Sachs & Co. LLC and Morgan Stanley & Co. LLC, as representatives of the several underwriters named therein

EX-1.1 Exhibit 1.1 $1,000,000,000 Northrop Grumman Corporation $500,000,000 4.650% Senior Notes due 2030 $500,000,000 5.250% Senior Notes due 2035 UNDERWRITING AGREEMENT May 27, 2025 Mizuho Securities USA LLC 1271 Avenue of the Americas New York, New York 10020 Goldman Sachs & Co. LLC 200 West Street New York, New York 10282 Morgan Stanley & Co. LLC 1585 Broadway, 29th Floor New York, New York 100

May 28, 2025 424B5

Northrop Grumman Corporation $500,000,000 4.650% Senior Notes due 2030 $500,000,000 5.250% Senior Notes due 2035

Filed Pursuant to Rule 424(b)(5) Registration No. 333-270497 Prospectus supplement (To prospectus dated March 13, 2023) Northrop Grumman Corporation $500,000,000 4.650% Senior Notes due 2030 $500,000,000 5.250% Senior Notes due 2035 We are offering $500,000,000 of our 4.650% Senior Notes due 2030 (the “2030 notes”) and $500,000,000 of our 5.250% Senior Notes due 2035 (the “2035 notes” and, togethe

May 28, 2025 8-K

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 27, 2025 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or other jurisdiction of incorporation) (Commission

May 28, 2025 FWP

Senior Notes Offering Pricing Term Sheet May 27, 2025 4.650% Senior Notes due 2030 5.250% Senior Notes due 2035 Issuer: Northrop Grumman Corporation Northrop Grumman Corporation Expected Ratings:(1) Moody’s Investors Service, Inc.: Baa1 (Outlook: Pos

FWP Filed Pursuant to Rule 433 Registration No. 333-270497 Issuer Free Writing Prospectus dated May 27, 2025 Relating to Prospectus dated March 13, 2023 and Preliminary Prospectus Supplement dated May 27, 2025 $1,000,000,000 Senior Notes Offering Pricing Term Sheet May 27, 2025 4.650% Senior Notes due 2030 5.250% Senior Notes due 2035 Issuer: Northrop Grumman Corporation Northrop Grumman Corporati

May 28, 2025 EX-99.1

###

Exhibit 99.1 News Release Contact: Kate Mauss (Media)  410-832-6792 (office)  [email protected]  Todd Ernst (Investors)  703-280-4535 (office)  [email protected] Northrop Grumman Prices $1.0 Billion Debt Offering FALLS CHURCH, Va. – May 27, 2025 – Northrop Grumman Corporation (NYSE: NOC) (“Northrop Grumman”) announced today that it has priced a $1.0 billion underwritten public offering of s

May 28, 2025 EX-FILING FEES

Fee or Carry

Exhibit 107.1 Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Regist

May 27, 2025 424B5

Subject to completion, dated May 27, 2025

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-270497 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell these securities and they are not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is

May 23, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 21, 2025 NORTHROP GRUMMAN CORP

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 21, 2025 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organizati

May 16, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT NORTHROP GRUMMAN CORPORATION (Exact name of the registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT NORTHROP GRUMMAN CORPORATION (Exact name of the registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organization) (Commission File Number) (I.R.S. Employer Identification No.) 2980 Fairview Park Drive, Falls Church VA 22042 (

May 16, 2025 EX-1.01

Conflict Minerals Report of Northrop Grumman Corporation

Exhibit 1.01 Conflict Minerals Report Conflict Minerals Report of Northrop Grumman Corporation For the Year Ended December 31, 2024 Section 1: Introduction This Conflict Minerals Report (“Report”) of Northrop Grumman Corporation (herein referred to as “Northrop Grumman,” the “company,” “we,” “us,” or “our”) has been prepared pursuant to Rule 13p-1 (the “Rule”) and Form SD promulgated under the Sec

May 14, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement Defin

April 22, 2025 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Kate Mauss (Media) 410-832-6792 [email protected] Todd Ernst (Investors) 703-280-4535 [email protected] Northrop Grumman Reports First Quarter 2025 Financial Results •Net awards of $10.8 billion; new record backlog of $92.8 billion •Sales of $9.5 billion •Diluted EPS of $3.32, including impact of B-21 LRIP loss provision of $2.74 •Repaid $1.5 billion of long

April 22, 2025 EX-10.2

Restricted Performance Stock Rights Grant Agreement Specifying Terms and Conditions Applicable to 202

Exhibit 10.2 NORTHROP GRUMMAN CORPORATION 2025 RESTRICTED PERFORMANCE STOCK RIGHTS GRANT AGREEMENT This 2025 Restricted Performance Stock Rights Grant Agreement (“Agreement”) applies to certain “Restricted Performance Stock Rights” (“RPSRs”) granted by Northrop Grumman Corporation (the “Company”) in 2025 under its 2024 Long-Term Incentive Stock Plan. If you were granted an RPSR award by the Compan

April 22, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-16411 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as

April 22, 2025 EX-15

Letter from Independent Registered Public Accounting Firm

NORTHROP GRUMMAN CORPORATION EXHIBIT 15 LETTER FROM INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM April 21, 2025 The Board of Directors and Shareholders of Northrop Grumman Corporation Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 We are aware that our report dated April 21, 2025, on our review of the interim financial information of Northrop Grumman Corporation and subsidiaries appearing in this Quarterly Report on Form 10-Q for the quarter ended March 31, 2025, is incorporated by reference in Registration Statement Nos.

April 22, 2025 EX-10.4

up Personal Excess Liability Policy, effective as of January 1, 2025

Exhibit 10.4 GROUP PERSONAL EXCESS LIABILITY POLICY INTRODUCTION This is your Chubb Group Personal Excess Liability Policy. Together with your Coverage Summary Certificate, it explains your coverages and other conditions of your insurance in detail. This policy is a contract between you and us. READ YOUR POLICY CAREFULLY and keep it in a safe place. Agreement We agree to provide the insurance desc

April 22, 2025 EX-10.1

Restricted Stock Rights Grant Agreement Specifying Terms and Conditions Applicable to 202

Exhibit 10.1 NORTHROP GRUMMAN CORPORATION 2025 RESTRICTED STOCK RIGHTS GRANT AGREEMENT This 2025 Restricted Stock Rights Grant Agreement (“Agreement”) applies to certain “Restricted Stock Rights” (“RSRs”) granted by Northrop Grumman Corporation (the “Company”) in 2025 under its 2024 Long-Term Incentive Stock Plan. If you were granted an RSR award by the Company in 2025, the date of grant of your R

April 22, 2025 EX-10.3

Appointed Officers of Northrop Grumman Corporation, as amended and

Exhibit 10.3 Severance Plan for Elected and Appointed Officers of Northrop Grumman Corporation As amended and restated effective February 18, 2025 1.Purpose of Plan. The purpose of the Plan is to provide severance benefits for eligible elected and appointed officers of Northrop Grumman Corporation who reside and work in the United States. The terms of this amended and restated Plan are applicable

April 22, 2025 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 22, 2025 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organiza

April 11, 2025 PX14A6G

Notice of Exempt Solicitation Pursuant to Rule 14a-103

Notice of Exempt Solicitation Pursuant to Rule 14a-103 Name of Registrant: Northrop Grumman (NOC) Name of person relying on exemption: John Chevedden, Northrop Grumman Shareholder since 2010 Address of persons relying on exemption: POB 2673, Redondo Beach, CA 90278 These written materials are submitted pursuant to Rule 14a-6(g)(1) promulgated under the Securities Exchange Act of 1934.

April 4, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement Defin

April 4, 2025 ARS

ARS ANNUAL REPORT

About Us Northrop Grumman is a leading global aerospace and defense technology company.

February 19, 2025 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 17, 2025 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organ

January 30, 2025 EX-10.T

Group Personal Excess Liability Policy effective as of January 1, 2024

Exhibit 10(t) GROUP PERSONAL EXCESS LIABILITY POLICY INTRODUCTION This is your Chubb Group Personal Excess Liability Policy.

January 30, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) January 30, 2025 NORTHROP GRUMMAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) January 30, 2025 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organi

January 30, 2025 EX-24

Power of Attorney

Exhibit 24 POWER OF ATTORNEY IN CONNECTION WITH THE 2024 ANNUAL REPORT ON FORM 10-K KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of NORTHROP GRUMMAN CORPORATION, a Delaware corporation, does hereby appoint KATHRYN G.

January 30, 2025 EX-21

NORTHROP GRUMMAN CORPORATION SUBSIDIARIES Address for all subsidiaries is: c/o NORTHROP GRUMMAN CORPORATION Office of the Secretary 2980 Fairview Park Drive Falls Church, Virginia 22042

Exhibit 21 NORTHROP GRUMMAN CORPORATION SUBSIDIARIES Address for all subsidiaries is: c/o NORTHROP GRUMMAN CORPORATION Office of the Secretary 2980 Fairview Park Drive Falls Church, Virginia 22042 Name of Subsidiary Jurisdiction of Incorporation Ownership Percentage Northrop Grumman Systems Corporation Delaware 100% Northrop Grumman Overseas Holdings, Inc.

January 30, 2025 EX-10.S

Executive Supplemental Individual Disability Insurance Plan dated June 10, 2022

Exhibit 10(s) Supplemental Individual Disability Insurance Plan Coverage underwritten by the following subsidiary of Unum Provident Life and Accident Insurance Company 1 Fountain Square Chattanooga, TN 37402 Unum Life Insurance Company of America 2211 Congress Street Portland, ME 04122 Provident Life and Casualty Insurance Company 1 Fountain Square Chattanooga, TN 37402 www.

January 30, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-16411 NORTHROP GRUMMAN CORPORATION

January 30, 2025 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Kate Mauss (Media) 410-832-6792 [email protected] Todd Ernst (Investors) 703-280-4535 [email protected] Northrop Grumman Reports Fourth Quarter and Full-Year 2024 Financial Results •Strong 2024 financial results that met or exceeded company-level financial guidance: ◦Book to bill ratio of 1.23; backlog rises to new record of $91.5 billion ◦Sales increase 4.4

January 30, 2025 EX-19

Insider Trading Policy and Procedure regarding Securities Trading for Designated Persons

Exhibit 19 Company Policy Policy Number CP L4 Subject Insider Trading Policy Effective Date 4/2/2024 Page 1 of 3 Process Owner Corporate Vice President and General Counsel Supersedes CP L4, Insider Trading Policy, dated 11/14/2023 Policy It is the policy of Northrop Grumman Corporation that all officers, directors, and employees of Northrop Grumman Corporation and its subsidiaries (collectively, “Covered Persons”) will act in full compliance with all applicable securities laws and avoid even the appearance of improper trading.

November 13, 2024 SC 13G/A

NOC / Northrop Grumman Corporation / Capital International Investors - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 7 )* Northrop Grumman Corp. (Name of Issuer) Common Stock (Title of Class of Securities) 666807102 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of this Statement) Check the appropriate bo

November 12, 2024 SC 13G/A

NOC / Northrop Grumman Corporation / BlackRock, Inc. Passive Investment

SC 13G/A 1 us6668071029111224.txt us6668071029111224.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 15) NORTHROP GRUMMAN CORP - (Name of Issuer) Common Stock - (Title of Class of Securities) 666807102 - (CUSIP Number) September 30, 2024 - (Date of Event Which Requires Filing of this Statement) Check the appropriat

October 24, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 24, 2024 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organi

October 24, 2024 EX-15

Letter from Independent Registered Public Accounting Firm

NORTHROP GRUMMAN CORPORATION EXHIBIT 15 LETTER FROM INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM October 23, 2024 The Board of Directors and Shareholders of Northrop Grumman Corporation Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 We are aware that our report dated October 23, 2024, on our review of the interim financial information of Northrop Grumman Corporation and subsidiaries appearing in this Quarterly Report on Form 10-Q for the quarter ended September 30, 2024, is incorporated by reference in Registration Statement Nos.

October 24, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-16411 NORTHROP GRUMMAN CORPORATION (Exact name of registran

October 24, 2024 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Cindy Anderson (Media) 571-550-1814 [email protected] Todd Ernst (Investors) 703-280-4535 [email protected] Northrop Grumman Reports Third Quarter 2024 Financial Results •Net awards of $11.7 billion; record backlog of $85 billion •Q3 sales of $10.0 billion; year to date sales up 6 percent •Operating margin rate of 11.2 percent; segment operating margin rate1

October 22, 2024 SC 13G/A

NOC / Northrop Grumman Corporation / BlackRock, Inc. Passive Investment

SC 13G/A 1 us6668071029102224.txt us6668071029102224.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 15) NORTHROP GRUMMAN CORP - (Name of Issuer) Common Stock - (Title of Class of Securities) 666807102 - (CUSIP Number) September 30, 2024 - (Date of Event Which Requires Filing of this Statement) Check the appropriat

September 19, 2024 8-K/A

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 14, 2024 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorpo

July 25, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-16411 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as

July 25, 2024 EX-10.3

Non-Employee Director Compensation Term Sheet, effective May 15, 2024 (incorporated by reference to Exhibit 10.3 to Form 10-Q for the quarter ended June 30, 2024, filed July 25, 2024, File No. 001-16411)

Exhibit 10.3 Fees and Expenses (effective as of May 15, 2024) Retainer: Retainer fees are paid quarterly, at the end of each quarter. Fees are as follows: Annual cash retainer: Additional retainer for: Lead Independent Director: Audit and Risk Committee: Audit and Risk Committee chair: Compensation and Human Capital Committee chair: Nominating and Governance Committee chair: Policy Committee chair

July 25, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Northrop Grumman Corporation (Exact Name of Registrant as Specified in its Charter) Table 1—Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, $1.

July 25, 2024 EX-10.2

Northrop Grumman Corporation Equity Grant Program for Non-Employee Directors under the Northrop Grumman 2024 Long-Term Incentive Stock Plan, Amended and Restated effective May 15, 2024 (incorporated by reference to Exhibit 10.2 to Form 10-Q for the quarter ended June 30, 2024, filed July 25, 2024, File No. 001-16411)

Exhibit 10.2 NORTHROP GRUMMAN CORPORATION EQUITY GRANT PROGRAM FOR NON-EMPLOYEE DIRECTORS UNDER THE NORTHROP GRUMMAN 2024 LONG-TERM INCENTIVE STOCK PLAN Amended and Restated Effective as of May 15, 2024 1.Purpose (a)The purpose of the Northrop Grumman Corporation Equity Grant Program for Non-Employee Directors (the “Program”) is to promote the long-term growth and financial success of Northrop Gru

July 25, 2024 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Cindy Anderson (Media) 571-550-1814 [email protected] Todd Ernst (Investors) 703-280-4535 [email protected] Northrop Grumman Reports Second Quarter 2024 Financial Results •Net awards of $15.1 billion; book to bill of 1.5x •Sales increase 7 percent to $10.2 billion •Operating income increases 13 percent driven by strong performance and cost efficiencies •Dilut

July 25, 2024 S-8

As filed with the Securities and Exchange Commission on July 25, 2024

As filed with the Securities and Exchange Commission on July 25, 2024 Registration No.

July 25, 2024 EX-15

Letter from Deloitte & Touche LLP, independent registered public accounting firm

Exhibit 15 Deloitte & Touche LLP Suite 800 7900 Tysons One Place McLean, VA 22102 USA www.

July 25, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 25, 2024 NORTHROP GRUMMAN COR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 25, 2024 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organizat

July 25, 2024 EX-15

Letter from Independent Registered Public Accounting Firm

NORTHROP GRUMMAN CORPORATION EXHIBIT 15 LETTER FROM INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM July 24, 2024 The Board of Directors and Shareholders of Northrop Grumman Corporation Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 We are aware that our report dated July 24, 2024, on our review of the interim financial information of Northrop Grumman Corporation and subsidiaries appearing in this Quarterly Report on Form 10-Q for the quarter ended June 30, 2024, is incorporated by reference in Registration Statement Nos.

June 14, 2024 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission file number: 1-16411 A. Full title of the plan and address of

June 14, 2024 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission file number: 1-16411 A. Full title of the plan and address of

May 24, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT NORTHROP GRUMMAN CORPORATION (Exact name of the registrant as specified in its charter) Delaware 1-16411 (State or Other Jurisdiction of Inc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT NORTHROP GRUMMAN CORPORATION (Exact name of the registrant as specified in its charter) Delaware 1-16411 (State or Other Jurisdiction of Incorporation) (Commission File Number) 2980 Fairview Park Drive, Falls Church VA 22042 (Address of Principal Executive Offices) (Zip Code) Michael A. Ha

May 24, 2024 EX-1.01

Conflict Minerals Report of Northrop Grumman Corporation

Exhibit 1.01 Conflict Minerals Report Conflict Minerals Report of Northrop Grumman Corporation For the Year Ended December 31, 2023 Section 1: Introduction This Conflict Minerals Report ("Report") of Northrop Grumman Corporation (herein referred to as "Northrop Grumman," the "company," "we," "us," or "our") has been prepared pursuant to Rule 13p-1 (the "Rule") and Form SD promulgated under the Sec

May 16, 2024 EX-99.1

Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, VA 22042-4511

Exhibit 99.1 News Release Contact: Jessica Kershaw 410-271-0540 [email protected] Northrop Grumman Announces Leadership Changes FALLS CHURCH, Va. – May 14, 2024 – Northrop Grumman Corporation (NYSE: NOC) announces that Dave Keffer, corporate vice president and chief financial officer, has announced his intent to retire, effective February 21, 2025, to spend more time with family. In addition

May 16, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 14, 2024 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organizati

May 16, 2024 EX-10.1

Northrop Grumman 2024 Long-Term Incentive Stock Plan (incorporated by reference to Exhibit 10.1 to Form 8-K filed May 16, 2024, File No. 001-16411)

Exhibit 10.1 NORTHROP GRUMMAN 2024 LONG-TERM INCENTIVE STOCK PLAN 1.Purpose The purpose of the Northrop Grumman 2024 Long-Term Incentive Stock Plan (the “Plan”) is to promote the long-term success of Northrop Grumman Corporation (the “Company”) and to increase shareholder value by providing its directors, officers and selected employees with incentives to create excellent performance and to contin

May 16, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 15, 2024 NORTHROP GRUMMAN CORP

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 15, 2024 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organizati

May 16, 2024 EX-3.1

estated Certificate of Incorporation of Northrop Grumman Corporation, dated May 15, 2024 (incorporated by reference to Exhibit 3.1 to Form 8-K

Exhibit 3.1 RESTATED CERTIFICATE OF INCORPORATION OF NORTHROP GRUMMAN CORPORATION (Originally incorporated on August 4, 2010 under the name New P, Inc.) FIRST: The name of the corporation is Northrop Grumman Corporation (the “Corporation”). SECOND: The address of the registered office of the Corporation in the State of Delaware is Corporation Trust Center, 1209 Orange Street, in the City of Wilmin

May 8, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement Defin

April 25, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-16411 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as

April 25, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 25, 2024 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organiza

April 25, 2024 EX-10.3

Northrop Grumman 2006 Annual Incentive Plan and Incentive Compensation Plan, as amended and restated effective January 1, 2024

Exhibit 10.3 NORTHROP GRUMMAN 2006 ANNUAL INCENTIVE PLAN AND INCENTIVE COMPENSATION PLAN As amended and restated effective January 1, 2024 SECTION I PURPOSE Northrop Grumman has an annual incentive program to promote the success of the Company and render its operations profitable to the maximum extent by providing incentives to key employees. Participating employees have varying degrees of impact

April 25, 2024 EX-15

Letter from Independent Registered Public Accounting Firm

NORTHROP GRUMMAN CORPORATION EXHIBIT 15 LETTER FROM INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM April 24, 2024 The Board of Directors and Shareholders of Northrop Grumman Corporation Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 We are aware that our report dated April 24, 2024, on our review of the interim financial information of Northrop Grumman Corporation and subsidiaries appearing in this Quarterly Report on Form 10-Q for the quarter ended March 31, 2024, is incorporated by reference in Registration Statement Nos.

April 25, 2024 EX-10.2

2024 Restricted Performance Stock Rights Grant Agreement Granted Under the 2011 Long-Term Incentive Stock Plan (incorporated by reference to Exhibit 10.2 to Form 10-Q for the quarter ended March 31, 2024, filed April 25, 2024, File No. 001-16411)

Exhibit 10.2 NORTHROP GRUMMAN CORPORATION 2024 RESTRICTED PERFORMANCE STOCK RIGHTS GRANT AGREEMENT This 2024 Restricted Performance Stock Rights Grant Agreement (“Agreement”) applies to certain “Restricted Performance Stock Rights” (“RPSRs”) granted by Northrop Grumman Corporation (the “Company”) in 2024 under its 2011 Long-Term Incentive Stock Plan. If you were granted an RPSR award by the Compan

April 25, 2024 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Vic Beck (Media) 703-280-4456 (office) [email protected] Todd Ernst (Investors) 703-280-4535 (office) [email protected] Northrop Grumman Reports First Quarter 2024 Financial Results •Sales increase 9 percent to $10.1 billion •Operating income increases 13 percent driven by strong performance and cost efficiencies •Diluted earnings per share increase 15 percent to $

April 25, 2024 EX-10.1

2024 Restricted Stock Rights Grant Agreement Granted Under the 2011 Long-Term Incentive Stock Plan (incorporated by reference to Exhibit 10.1 to Form 10-Q for the quarter ended March 31, 2024, filed April 25, 2024, File No. 001-16411)

Exhibit 10.1 NORTHROP GRUMMAN CORPORATION 2024 RESTRICTED STOCK RIGHTS GRANT AGREEMENT This 2024 Restricted Stock Rights Grant Agreement (“Agreement”) applies to certain “Restricted Stock Rights” (“RSRs”) granted by Northrop Grumman Corporation (the “Company”) in 2024 under its 2011 Long-Term Incentive Stock Plan. If you were granted an RSR award by the Company in 2024, the date of grant of your R

April 3, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement Defin

March 21, 2024 PRE 14A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement Defin

February 20, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 14, 2024 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organ

February 13, 2024 SC 13G/A

NOC / Northrop Grumman Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)* Name of issuer: Northrop Grumman Corp Title of Class of Securities: Common Stock CUSIP Number: 666807102 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designate the rule pursuant to which this Schedule is filed

February 9, 2024 SC 13G/A

NOC / Northrop Grumman Corporation / Capital International Investors - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6 )* Northrop Grumman Corp. (Name of Issuer) Common Stock (Title of Class of Securities) 666807102 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box

January 31, 2024 EX-4.1

Twelfth Supplemental Indenture, dated as of January 31, 2024, between Northrop Grumman Corporation and The Bank of New York Mellon, as successor to JPMorgan Chase Bank, Trustee, to Indenture dated as of November 21, 2001

Exhibit 4.1 EXECUTION VERSION NORTHROP GRUMMAN CORPORATION AND THE BANK OF NEW YORK MELLON, TRUSTEE TWELFTH SUPPLEMENTAL INDENTURE Dated as of January 31, 2024 to INDENTURE Dated as of November 21, 2001 as amended and supplemented by the FIRST SUPPLEMENTAL INDENTURE Dated as of July 30, 2009 THIRD SUPPLEMENTAL INDENTURE Dated as of March 30, 2011 FOURTH SUPPLEMENTAL INDENTURE Dated as of March 30,

January 31, 2024 424B5

Northrop Grumman Corporation $500,000,000 4.600% Senior Notes due 2029 $850,000,000 4.900% Senior Notes due 2034 $1,150,000,000 5.200% Senior Notes due 2054

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No 333-270497 Northrop Grumman Corporation $500,000,000 4.

January 31, 2024 8-K

Entry into a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 29, 2024 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or other jurisdiction of incorporation) (Commis

January 31, 2024 EX-FILING FEES

Maximum Aggregate Offering Price

Exhibit 107.1 Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Regist

January 31, 2024 EX-1.1

Underwriting Agreement, dated January 29, 2024, among Northrop Grumman Corporation and J.P. Morgan Securities LLC, Mizuho Securities USA LLC and Wells Fargo Securities, LLC, as representatives of the several underwriters named therein

Exhibit 1.1 Execution Version $2,500,000,000 Northrop Grumman Corporation $500,000,000 4.600% Senior Notes due 2029 $850,000,000 4.900% Senior Notes due 2034 $1,150,000,000 5.200% Senior Notes due 2054 UNDERWRITING AGREEMENT January 29, 2024 J.P. Morgan Securities LLC 383 Madison Avenue New York, New York 10179 Mizuho Securities USA LLC 1271 Avenue of the Americas New York, New York 10020 Wells Fa

January 30, 2024 8-K

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 29, 2024 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or other jurisdiction of incorporation) (Commis

January 30, 2024 EX-99.1

###

Exhibit 99.1 News Release Contact: Vic Beck (Media) 703-280-4456 (office) [email protected] Todd Ernst (Investors) 703-280-4535 (office) [email protected] Northrop Grumman Prices $2.5 Billion Debt Offering FALLS CHURCH, Va. – January 29, 2024 – Northrop Grumman Corporation (NYSE: NOC) (“Northrop Grumman”) announced today that it has priced a $2.5 billion underwritten public offering of senior unse

January 30, 2024 SC 13G/A

NOC / Northrop Grumman Corporation / STATE STREET CORP Passive Investment

SC 13G/A 1 NorthropGrummanCorp.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 AMENDED FILING NORTHROP GRUMMAN CORP (NAME OF ISSUER) COMMON STOCK (TITLE OF CLASS OF SECURITIES) 666807102 (CUSIP NUMBER) 12/31/2023 (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT) CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE

January 30, 2024 FWP

Senior Notes Offering Pricing Term Sheet January 29, 2024 4.600% Senior Notes due 2029 4.900% Senior Notes due 2034 5.200% Senior Notes due 2054 Issuer: Northrop Grumman Corporation Northrop Grumman Corporation Northrop Grumman Corporation Expected R

Filed Pursuant to Rule 433 Registration No. 333-270497 Issuer Free Writing Prospectus dated January 29, 2024 Relating to Prospectus dated March 13, 2023 and Preliminary Prospectus Supplement dated January 29, 2024 $2,500,000,000 Senior Notes Offering Pricing Term Sheet January 29, 2024 4.600% Senior Notes due 2029 4.900% Senior Notes due 2034 5.200% Senior Notes due 2054 Issuer: Northrop Grumman C

January 29, 2024 424B5

Subject to completion, dated January 29, 2024 Prospectus supplement (To prospectus dated March 13, 2023) Northrop Grumman Corporation $    % Senior Notes due 20   $    % Senior Notes due 20   $    % Senior Notes due 20  

Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No 333-270497 The information in this preliminary prospectus supplement is not complete and may be changed.

January 29, 2024 SC 13G/A

NOC / Northrop Grumman Corporation / BlackRock Inc. Passive Investment

SC 13G/A 1 us6668071029012924.txt us6668071029012924.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 14) NORTHROP GRUMMAN CORP - (Name of Issuer) Common Stock - (Title of Class of Securities) 666807102 - (CUSIP Number) December 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropriate

January 25, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-16411 NORTHROP GRUMMAN CORPORATION

January 25, 2024 EX-24

Power of Attorney

Exhibit 24 POWER OF ATTORNEY IN CONNECTION WITH THE 2023 ANNUAL REPORT ON FORM 10-K KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of NORTHROP GRUMMAN CORPORATION, a Delaware corporation, does hereby appoint KATHRYN G.

January 25, 2024 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Vic Beck (Media) 703-280-4456 (office) [email protected] Todd Ernst (Investors) 703-280-4535 (office) [email protected] Northrop Grumman Reports Fourth Quarter and Full-Year 2023 Financial Results •Total backlog rises to record $84.2 billion driven by full year book to bill of 1.14 •Q4 Sales increase 6 percent to $10.6 billion; 2023 sales increase 7 percent to $39.

January 25, 2024 EX-97

Northrop Grumman Policy Regarding the Recoupment of Certain Incentive Compensation Payments

Exhibit 97 Northrop Grumman Policy Regarding the Recoupment of Certain Incentive Compensation Payments This policy of Northrop Grumman Corporation (“Northrop Grumman” or the “Company”) sets forth the Company’s policy regarding the recoupment of certain incentive compensation payments.

January 25, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) January 25, 2024 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organi

January 25, 2024 EX-10.FVII

Special 2023 Restricted Stock Rights Grant Agreement Granted to Roshan Roeder Under the 2011 Long-Term Incentive Stock Plan (incorporated by reference to Exhibit 10(f)(viii) to Form 10-K for the year ended December 31, 2023, filed January 25, 2024, File No. 001-16411)

Exhibit 10(f)(viii) NORTHROP GRUMMAN CORPORATION 2023 RESTRICTED STOCK RIGHTS GRANT AGREEMENT This 2023 Restricted Stock Rights Grant Agreement (“Agreement”) applies to certain “Restricted Stock Rights” (“RSRs”) granted by Northrop Grumman Corporation (the “Company”) in 2023 under its 2011 Long-Term Incentive Stock Plan.

January 25, 2024 EX-21

NORTHROP GRUMMAN CORPORATION SUBSIDIARIES Address for all subsidiaries is: c/o NORTHROP GRUMMAN CORPORATION Office of the Secretary 2980 Fairview Park Drive Falls Church, Virginia 22042

Exhibit 21 NORTHROP GRUMMAN CORPORATION SUBSIDIARIES Address for all subsidiaries is: c/o NORTHROP GRUMMAN CORPORATION Office of the Secretary 2980 Fairview Park Drive Falls Church, Virginia 22042 Name of Subsidiary Jurisdiction of Incorporation Ownership Percentage Northrop Grumman Systems Corporation Delaware 100% Northrop Grumman Overseas Holdings, Inc.

October 26, 2023 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Vic Beck (Media) 703-280-4456 (office) [email protected] Todd Ernst (Investors) 703-280-4535 (office) [email protected] Northrop Grumman Reports Third Quarter 2023 Financial Results •Net awards of $15 billion; book to bill of 1.53 •Total backlog rises to record $84 billion •Sales increased 9 percent to $9.8 billion •Operating income increased 20 percent; segment op

October 26, 2023 EX-15

Letter from Independent Registered Public Accounting Firm

NORTHROP GRUMMAN CORPORATION EXHIBIT 15 LETTER FROM INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM October 25, 2023 The Board of Directors and Shareholders of Northrop Grumman Corporation Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 We are aware that our report dated October 25, 2023, on our review of the interim financial information of Northrop Grumman Corporation and subsidiaries appearing in this Quarterly Report on Form 10-Q for the quarter ended September 30, 2023, is incorporated by reference in Registration Statement Nos.

October 26, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-16411 NORTHROP GRUMMAN CORPORATION (Exact name of registran

October 26, 2023 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 26, 2023 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organi

September 22, 2023 EX-99.1

Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, VA 22042-4511

Exhibit 99.1 News Release Contact: Vic Beck 703-280-4456 [email protected] Northrop Grumman Elects Robert Fleming Corporate Vice President and President, Space Systems FALLS CHURCH, Va. – Sept. 21, 2023 – Northrop Grumman Corporation (NYSE: NOC) announces that its board of directors has elected Robert Fleming corporate vice president and president, Space Systems sector, effective October 9, 2023. F

September 22, 2023 8-K

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 18, 2023 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Orga

July 27, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-16411 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as

July 27, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 27, 2023 NORTHROP GRUMMAN COR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 27, 2023 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organizat

July 27, 2023 S-8

As filed with the Securities and Exchange Commission on July 27, 2023

As filed with the Securities and Exchange Commission on July 27, 2023 Registration No.

July 27, 2023 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Vic Beck (Media) 703-280-4456 (office) [email protected] Todd Ernst (Investors) 703-280-4535 (office) [email protected] Northrop Grumman Reports Second Quarter 2023 Financial Results •Net Awards of $10.9 billion; book to bill of 1.14 •Sales increased 9 percent to $9.6 billion •Diluted earnings per share of $5.34 •Operating cash flow of $919 million •Company increas

July 27, 2023 EX-FILING FEES

Filing Fee Table

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Northrop Grumman Corporation (Exact Name of Registrant as Specified in its Charter) Table 1—Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, $1.

July 27, 2023 EX-10.1

(incorporated by reference to Exhibit 10.1 to Form 10-Q for the quarter ended June 30, 202

Fees and Expenses (effective as of May 17, 2023) Retainer: Retainer fees are paid quarterly, at the end of each quarter.

July 27, 2023 EX-15

Letter from Deloitte & Touche LLP, independent registered public accounting firm

Exhibit 15 Deloitte & Touche LLP Suite 800 7900 Tysons One Place McLean, VA 22102 USA www.

July 27, 2023 EX-15

Letter from Independent Registered Public Accounting Firm

NORTHROP GRUMMAN CORPORATION EXHIBIT 15 LETTER FROM INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM July 26, 2023 The Board of Directors and Shareholders of Northrop Grumman Corporation Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 We are aware that our report dated July 26, 2023, on our review of the interim financial information of Northrop Grumman Corporation and subsidiaries appearing in this Quarterly Report on Form 10-Q for the quarter ended June 30, 2023, is incorporated by reference in Registration Statement Nos.

July 27, 2023 EX-10.2

(incorporated by reference to Exhibit 10.2 to Form 10-Q for the quarter ended June 30, 2023, filed July 26, 2023, File No. 001-16411)

NORTHROP GRUMMAN SAVINGS EXCESS PLAN (Amended and Restated Effective as of July 1, 2023) TABLE OF CONTENTS INTRODUCTION 1 ARTICLE I DEFINITIONS 1 1.

July 12, 2023 EX-99.1

Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, VA 22042-4511

Exhibit 99.1 News Release Contact: Vic Beck 703-280-4456 [email protected] Northrop Grumman Elects Kathryn Simpson Corporate Vice President and General Counsel; Sheila Cheston to Retire FALLS CHURCH, Va. – July 12, 2023 – Northrop Grumman Corporation (NYSE: NOC) announces that its board of directors has elected Kathryn Simpson corporate vice president and general counsel, effective October 30, 2023

July 12, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 7, 2023 NORTHROP GRUMMAN CORP

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 7, 2023 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organizati

June 15, 2023 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year ended December 31, 2022 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the transition period from to . Commission file number: 1-16411 A. Full title of the plan and address of t

June 15, 2023 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the transition period from to . Commission file number: 1-16411 A. Full title of the plan and address of

May 22, 2023 EX-1.01

Conflict Minerals Report of Northrop Grumman Corporation

Exhibit 1.01 Conflict Minerals Report Conflict Minerals Report of Northrop Grumman Corporation For the Year Ended December 31, 2022 Section 1: Introduction This Conflict Minerals Report ("Report") of Northrop Grumman Corporation (herein referred to as "Northrop Grumman," the "company," "we," "us," or "our") has been prepared pursuant to Rule 13p-1 (the "Rule") and Form SD promulgated under the Sec

May 22, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT NORTHROP GRUMMAN CORPORATION (Exact name of the registrant as specified in its charter) Delaware 1-16411 (State or Other Jurisdiction of Inc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT NORTHROP GRUMMAN CORPORATION (Exact name of the registrant as specified in its charter) Delaware 1-16411 (State or Other Jurisdiction of Incorporation) (Commission File Number) 2980 Fairview Park Drive, Falls Church VA 22042 (Address of Principal Executive Offices) (Zip Code) Michael A. Ha

May 19, 2023 EX-3.1

17, 2023 (incorporated by reference to Exhibit 3.1 to Form 8-K, filed May 19, 2023, File No. 001-16411)

Exhibit 3.1 AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF NORTHROP GRUMMAN CORPORATION (Originally incorporated on August 4, 2010 under the name New P, Inc.) FIRST: The name of the corporation is Northrop Grumman Corporation (the “Corporation”). SECOND: The address of the registered office of the Corporation in the State of Delaware is Corporation Trust Center, 1209 Orange Street, in the Ci

May 19, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 17, 2023 NORTHROP GRUMMAN CORP

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 17, 2023 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organizati

May 19, 2023 EX-3.2

Amended and Restated Bylaws of Northrop Grumman Corporation dated May 17, 2023 (incorporated by reference to Exhibit 3.2 to Form 8-K filed May 19, 2023, File No. 001-16411)

Exhibit 3.2 AMENDED AND RESTATED BYLAWS OF NORTHROP GRUMMAN CORPORATION (A Delaware Corporation) ARTICLE I OFFICES Section 1.01. Registered Office. The registered office of Northrop Grumman Corporation (the “Corporation”) in the State of Delaware shall be at Corporation Trust Center, 1209 Orange Street, City of Wilmington, County of New Castle, and the name of the registered agent at that address

May 10, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement Defin

April 27, 2023 EX-10.3

Group Personal Excess Liability Policy effective as of January 1, 202

Exhibit 10.3 GROUP PERSONAL EXCESS LIABILITY POLICY INTRODUCTION This is your Chubb Group Personal Excess Liability Policy. Together with your Coverage Summary, it explains your coverages and other conditions of your insurance in detail. This policy is a contract between you and us. READ YOUR POLICY CAREFULLY and keep it in a safe place. Agreement We agree to provide the insurance described in thi

April 27, 2023 EX-10.2

2023 Restricted Performance Stock Rights Grant Agreement Granted Under the 2011 Long-Term Incentive Stock Plan (incorporated by reference to Exhibit 10.2 to Form 10-Q for the quarter ended March 31, 2023, filed April 26, 2023, File No. 001-16411)

Exhibit 10.2 NORTHROP GRUMMAN CORPORATION 2023 RESTRICTED PERFORMANCE STOCK RIGHTS GRANT AGREEMENT This 2023 Restricted Performance Stock Rights Grant Agreement (“Agreement”) applies to certain “Restricted Performance Stock Rights” (“RPSRs”) granted by Northrop Grumman Corporation (the “Company”) in 2023 under its 2011 Long-Term Incentive Stock Plan. If you were granted an RPSR award by the Compan

April 27, 2023 EX-10.1

2022 Restricted Performance Stock Rights Grant Agreement Granted Under the 2011 Long-Term Incentive Stock Plan (incorporated by reference to Exhibit 10.3 to Form 10-Q for the quarter ended March 31, 2022, filed April 28, 2022, File No. 001-16411)

Exhibit 10.1 NORTHROP GRUMMAN CORPORATION 2023 RESTRICTED STOCK RIGHTS GRANT AGREEMENT This 2023 Restricted Stock Rights Grant Agreement (“Agreement”) applies to certain “Restricted Stock Rights” (“RSRs”) granted by Northrop Grumman Corporation (the “Company”) in 2023 under its 2011 Long-Term Incentive Stock Plan. If you were granted an RSR award by the Company in 2023, the date of grant of your R

April 27, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-16411 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as

April 27, 2023 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Vic Beck (Media) 703-280-4456 (office) [email protected] Todd Ernst (Investors) 703-280-4535 (office) [email protected] Northrop Grumman Reports First Quarter 2023 Financial Results •Sales increased 6 percent to $9.3 billion •Operating income increased 6 percent to $947 million •Diluted earnings per share of $5.50 •$1.0 billion returned to shareholders through divi

April 27, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 27, 2023 NORTHROP GRUMMAN CO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 27, 2023 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organiza

April 27, 2023 EX-15

Letter from Independent Registered Public Accounting Firm

NORTHROP GRUMMAN CORPORATION EXHIBIT 15 LETTER FROM INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM April 26, 2023 The Board of Directors and Shareholders of Northrop Grumman Corporation Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 We are aware that our report dated April 26, 2023, on our review of the interim financial information of Northrop Grumman Corporation and subsidiaries appearing in this Quarterly Report on Form 10-Q for the quarter ended March 31, 2023, is incorporated by reference in Registration Statement Nos.

April 24, 2023 PX14A6G

United States Securities and Exchange Commission Washington, D.C. 20549 Notice of Exempt Solicitation Pursuant to Rule 14a-103

United States Securities and Exchange Commission Washington, D.C. 20549 Notice of Exempt Solicitation Pursuant to Rule 14a-103 Name of the Registrant: Northrop Grumman Corporation Name of persons relying on exemption: The School Sisters of Notre Dame Cooperative Investment Fund Address of persons relying on exemption: Investor Advocates for Social Justice, 40 S Fullerton Ave Montclair, NJ 07042. W

March 31, 2023 ARS

ARS

2022 A nnual R epor t NORTHROP GRUMMAN 2022 ANNUAL REPORTNORTHROP GRUMMAN 2022 ANNUAL REPORT *Non-GAAP financial metric.

March 31, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement Defin

March 16, 2023 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement Defin

March 15, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 15, 2023 NORTHROP GRUMMAN CO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 15, 2023 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organiza

March 15, 2023 EX-99.1

Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, VA 22042-4511

Exhibit 99.1 News Release Contact: Vic Beck (Media) 703-280-4456 (office) [email protected] Kimberly Ross and Mary Winston Join Northrop Grumman Board of Directors FALLS CHURCH, Va. – March 15, 2023 – Northrop Grumman Corporation (NYSE: NOC) has elected Kimberly A. Ross and Mary A. Winston to its board of directors. “Kimberly and Mary are proven global business leaders, and we’re thrilled to have t

March 13, 2023 S-3ASR

Power of Attorney – Northrop Grumman Corporation Directors

S-3ASR As filed with the Securities and Exchange Commission on March 13, 2023 Registration No.

March 13, 2023 EX-FILING FEES

Filing Fee Table

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Northrop Grumman Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to Be Carried Forward Newly Registered Securities Fees to Be Paid Debt Senior Debt Securities 457(r) (1) (1) (1) (2) (2) Fees to Be Paid Equity Common Stock, par value $1.

March 13, 2023 EX-23.A

Consent of Deloitte & Touche LLP, an independent registered public accounting firm

EX-23.A Exhibit 23(a) Deloitte & Touche LLP Suite 800 7900 Tysons One Place McLean, VA 22102 USA www.deloitte.com CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form S-3 of our reports dated January 25, 2023, relating to the consolidated financial statements of Northrop Grumman Corporation and subsidiaries, an

March 13, 2023 EX-5.A

Opinion of Wilmer Cutler Pickering Hale and Dorr LLP

EX-5.A Exhibit 5(a) +1 202 663 6000 (t) +1 202 663 6363 (f) wilmerhale.com March 13, 2023 Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 Re: Registration Statement on Form S-3 Ladies and Gentlemen: This opinion is furnished to you in connection with a Registration Statement on Form S-3 (the “Registration Statement”) filed by Northrop Grumman Corporation, a Delaw

March 13, 2023 EX-25.A

Statement of Eligibility on Form T-1 of The Bank of New York Mellon to act as trustee under the Northrop Grumman Corporation Indenture

EX-25.A 4 d437510dex25a.htm EX-25.A Exhibit 25(a) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON (Exact name of trustee as specified in

February 17, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 15, 2023 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organ

February 13, 2023 SC 13G/A

NOC / Northrop Grumman Corporation / Capital International Investors - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5 )* Northrop Grumman Corp. (Name of Issuer) Common Stock (Title of Class of Securities) 666807102 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box

February 10, 2023 SC 13G/A

NOC / Northrop Grumman Corporation / STATE STREET CORP Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 AMENDED FILING* NORTHROP GRUMMAN CORP (NAME OF ISSUER) COMMON STOCK (TITLE OF CLASS OF SECURITIES) 666807102 (CUSIP NUMBER) 12/31/2022 (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT) CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE PURSUANT TO WHICH THIS SCHEDULE IS

February 9, 2023 SC 13G/A

NOC / Northrop Grumman Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 9)* Name of issuer: Northrop Grumman Corp. Title of Class of Securities: Common Stock CUSIP Number: 666807102 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule pursuant to which this Schedule is filed

February 8, 2023 EX-1.1

Underwriting Agreement, dated February 6, 2023, among Northrop Grumman Corporation and Wells Fargo Securities, LLC, J.P. Morgan Securities LLC and Mizuho Securities USA LLC, as representatives of the several underwriters named therein

Exhibit 1.1 Execution Version $2,000,000,000 Northrop Grumman Corporation $1,000,000,000 4.700% Senior Notes due 2033 $1,000,000,000 4.950% Senior Notes due 2053 UNDERWRITING AGREEMENT February 6, 2023 Wells Fargo Securities, LLC 550 South Tryon Street, 5th Floor Charlotte, North Carolina 28202 J.P. Morgan Securities LLC 383 Madison Avenue New York, New York 10179 Mizuho Securities USA LLC 1271 Av

February 8, 2023 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 6, 2023 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or other jurisdiction of incorporation) (Commis

February 8, 2023 EX-4.1

Eleventh Supplemental Indenture, dated as of February 8, 2023, between Northrop Grumman Corporation and The Bank of New York Mellon, as successor to JPMorgan Chase Bank, Trustee, to Indenture dated as of November 21, 2001 (incorporated by reference to Exhibit 4.1 to Form 8-K filed February 8, 2023, File No. 001-16411)

Exhibit 4.1 Execution Version NORTHROP GRUMMAN CORPORATION AND THE BANK OF NEW YORK MELLON, TRUSTEE ELEVENTH SUPPLEMENTAL INDENTURE Dated as of February 8, 2023 to INDENTURE Dated as of November 21, 2001 as amended and supplemented by the FIRST SUPPLEMENTAL INDENTURE Dated as of July 30, 2009 THIRD SUPPLEMENTAL INDENTURE Dated as of March 30, 2011 FOURTH SUPPLEMENTAL INDENTURE Dated as of March 30

February 7, 2023 FWP

Senior Notes Offering Pricing Term Sheet February 6, 2023 4.700% Senior Notes due 2033 4.950% Senior Notes due 2053 Issuer: Northrop Grumman Corporation Northrop Grumman Corporation Expected Ratings:(1) Moody’s Investors Service, Inc.: Baa1 (Outlook:

Filed Pursuant to Rule 433 Registration No. 333-237504 Issuer Free Writing Prospectus dated February 6, 2023 Relating to Prospectus dated March 31, 2020 and Preliminary Prospectus Supplement dated February 6, 2023 $2,000,000,000 Senior Notes Offering Pricing Term Sheet February 6, 2023 4.700% Senior Notes due 2033 4.950% Senior Notes due 2053 Issuer: Northrop Grumman Corporation Northrop Grumman C

February 7, 2023 EX-FILING FEES

Fees to Be

Exhibit 107.1 Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Regist

February 7, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 6, 2023 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or other jurisdiction of incorporation) (Commis

February 7, 2023 EX-99.1

###

Exhibit 99.1 News Release Contact: Vic Beck (Media) 703-280-4456 (office) [email protected] Todd Ernst (Investors) 703-280-4535 (office) [email protected] Northrop Grumman Prices $2.0 Billion Debt Offering FALLS CHURCH, Va. – February 6, 2023 – Northrop Grumman Corporation (NYSE: NOC) (“Northrop Grumman”) announced today that it has priced a $2.0 billion underwritten public offering of senior unse

February 7, 2023 424B5

Northrop Grumman Corporation $1,000,000,000 4.700% Senior Notes due 2033 $1,000,000,000 4.950% Senior Notes due 2053

Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No 333-237504 Prospectus supplement (To prospectus dated March 31, 2020) Northrop Grumman Corporation $1,000,000,000 4.

February 6, 2023 SC 13G/A

NOC / Northrop Grumman Corporation / WELLINGTON MANAGEMENT GROUP LLP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2 )* Northrop Grumman Corporation (Name of Issuer) Common Stock (Title of Class of Securities) 666807102 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to whic

February 6, 2023 424B2

Northrop Grumman Corporation $ % Senior Notes due 20 $ % Senior Notes due 20

Table of Contents The information in this preliminary prospectus supplement is not complete and may be changed.

February 1, 2023 SC 13G/A

NOC / Northrop Grumman Corporation / BlackRock Inc. Passive Investment

SC 13G/A 1 us6668071029020123.txt us6668071029020123.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 13) NORTHROP GRUMMAN CORP - (Name of Issuer) Common Stock - (Title of Class of Securities) 666807102 - (CUSIP Number) December 31, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriate

January 26, 2023 EX-24

Power of Attorney

Exhibit 24 POWER OF ATTORNEY IN CONNECTION WITH THE 2022 ANNUAL REPORT ON FORM 10-K KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of NORTHROP GRUMMAN CORPORATION, a Delaware corporation, does hereby appoint SHEILA C.

January 26, 2023 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Vic Beck (Media) 703-280-4456 (office) [email protected] Todd Ernst (Investors) 703-280-4535 (office) [email protected] Northrop Grumman Reports Fourth Quarter and Full-Year 2022 Financial Results •Q4 Sales increase 16 percent to $10.0 billion •2022 Sales of $36.6 billion; 2022 Organic Sales1 increase 3 percent •Q4 Diluted EPS of $13.46 including per share MTM bene

January 26, 2023 EX-21

NORTHROP GRUMMAN CORPORATION SUBSIDIARIES Address for all subsidiaries is: c/o NORTHROP GRUMMAN CORPORATION Office of the Secretary 2980 Fairview Park Drive Falls Church, Virginia 22042

Exhibit 21 NORTHROP GRUMMAN CORPORATION SUBSIDIARIES Address for all subsidiaries is: c/o NORTHROP GRUMMAN CORPORATION Office of the Secretary 2980 Fairview Park Drive Falls Church, Virginia 22042 Name of Subsidiary Jurisdiction of Incorporation Ownership Percentage Northrop Grumman Systems Corporation Delaware 100% Northrop Grumman Overseas Holdings, Inc.

January 26, 2023 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) January 26, 2023 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organi

January 26, 2023 EX-10.DD

Transition and Retirement Agreement dated as of September 9, 2022, as revised, by and between Northrop Grumman Systems Corporation and Mary D. Petryszyn

EX-10.DD 2 noc-12312022xex10dd.htm TRANSITION AND RETIREMENT AGREEMENT REVISED BETWEEN NGSC AND M. PETRYSZYN Exhibit 10(dd) TRANSITION AND RETIREMENT AGREEMENT 1.PARTIES: The parties to this Transition and Retirement Agreement (“Agreement”) are MARY D. PETRYSZYN (“Ms. Petryszyn”) and NORTHROP GRUMMAN SYSTEMS CORPORATION (“Northrop Grumman” or “the Company”). 2.RECITALS: 2.1 Ms. Petryszyn has decid

January 26, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-16411 NORTHROP GRUMMAN CORPORATION

November 17, 2022 EX-99.1

Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, VA 22042-4511

Exhibit 99.1 News Release Contact: Vic Beck (Media) 703-280-4456 (office) 571-395-0180 (mobile) [email protected] Arvind Krishna Joins Northrop Grumman Board of Directors FALLS CHURCH, Va. ? Nov. 16, 2022 ? Northrop Grumman Corporation (NYSE: NOC) announced it has elected Arvind Krishna to its board of directors. Krishna is the chairman and chief executive officer of IBM. ?Arvind is a proven busine

November 17, 2022 8-K

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 16, 2022 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organ

October 27, 2022 EX-15

Letter from Independent Registered Public Accounting Firm

NORTHROP GRUMMAN CORPORATION EXHIBIT 15 LETTER FROM INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM October 26, 2022 The Board of Directors and Stockholders of Northrop Grumman Corporation Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 We are aware that our report dated October 26, 2022, on our review of the interim financial information of Northrop Grumman Corporation and subsidiaries appearing in this Quarterly Report on Form 10-Q for the quarter ended September 30, 2022, is incorporated by reference in Registration Statement Nos.

October 27, 2022 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

Exhibit 99 News Release Contact: Vic Beck (Media) 703-280-4456 (office) [email protected] Todd Ernst (Investors) 703-280-4535 (office) [email protected] Northrop Grumman Reports Third Quarter 2022 Financial Results •Awards of $8.7 Billion, Book to Bill of 0.97, YTD Book to Bill of 1.14 •Sales Increased 3 percent to $9.0 Billion •Diluted EPS of $5.89 including $0.18 unfavorable impact from marketab

October 27, 2022 EX-10.2

Transition and Retirement Agreement dated as of September 9, 2022 by and between Northrop Grumman Systems Corporation and Mary D. Petryszyn

Exhibit 10.2 TRANSITION AND RETIREMENT AGREEMENT 1.PARTIES: The parties to this Transition and Retirement Agreement (“Agreement”) are MARY D. PETRYSZYN (“Ms. Petryszyn”) and NORTHROP GRUMMAN SYSTEMS CORPORATION (“Northrop Grumman” or “the Company”). 2.RECITALS: 2.1Ms. Petryszyn has decided to retire effective February 1, 2023, and to transition out of her current position on October 15, 2022, to e

October 27, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 27, 2022 NORTHROP GRUMMAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 27, 2022 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organi

October 27, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-16411 NORTHROP GRUMMAN CORPORATION (Exact name of registran

October 7, 2022 LETTER

LETTER

United States securities and exchange commission logo October 7, 2022 David F. Keffer Chief Financial Officer Northrop Grumman Corp. 2980 Fairview Park Drive Falls Church, VA 22042 Re: Northrop Grumman Corp. Definitive Proxy Statement on Schedule 14A Filed April 1, 2022 File No. 001-16411 Dear David F. Keffer: We have completed our review of your filing. We remind you that the company and its mana

October 5, 2022 CORRESP

2980 Fairview Park Drive

Northrop Grumman 2980 Fairview Park Drive Falls Church, Virginia 22042-4511 northropgrumman.

September 22, 2022 8-K

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 19, 2022 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Orga

September 22, 2022 EX-99.1

Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, VA 22042-4511

Exhibit 99.1 News Release Contact: Vic Beck (Media) 703-280-4456 (office) [email protected] Northrop Grumman Elects Roshan Roeder Corporate Vice President and President, Defense Systems; Mary Petryszyn to Retire FALLS CHURCH, Va. ? Sept. 22, 2022 ? Northrop Grumman Corporation (NYSE: NOC) announces that its board of directors has elected Roshan Roeder corporate vice president and president, Defense

September 21, 2022 LETTER

LETTER

United States securities and exchange commission logo September 21, 2022 David F. Keffer Chief Financial Officer Northrop Grumman Corp. 2980 Fairview Park Drive Falls Church, VA 22042 Re: Northrop Grumman Corp. Definitive Proxy Statement on Schedule 14A Filed April 1, 2022 File No. 001-16411 Dear Mr. Keffer: We have limited our review of your most recent definitive proxy statement to those issues

August 23, 2022 EX-10.1

Credit Agreement, dated as of August 23, 2022, among Northrop Grumman Corporation, as Borrower; Northrop Grumman Systems Corporation, as Guarantor; the lenders party thereto and JPMorgan Chase Bank, N.A., as Administrative Agent (incorporated by reference to Exhibit 10.1 to Form 8-K filed August 23, 2022, File No. 001-16411)

Exhibit 10.1 EXECUTION VERSION CREDIT AGREEMENT dated as of August 23, 2022, among NORTHROP GRUMMAN CORPORATION, NORTHROP GRUMMAN SYSTEMS CORPORATION, The LENDERS Party Hereto and JPMORGAN CHASE BANK, N.A., as Administrative Agent WELLS FARGO SECURITIES, LLC, JPMORGAN CHASE BANK, N.A. and MIZUHO BANK, LTD., as Joint Lead Arrangers and Joint Bookrunners WELLS FARGO BANK, NATIONAL ASSOCIATION and MI

August 23, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 23, 2022 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or other jurisdiction of incorporation) (Commiss

July 28, 2022 EX-15

Letter from Independent Registered Public Accounting Firm

NORTHROP GRUMMAN CORPORATION EXHIBIT 15 LETTER FROM INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM July 27, 2022 The Board of Directors and Stockholders of Northrop Grumman Corporation Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 We are aware that our report dated July 27, 2022, on our review of the interim financial information of Northrop Grumman Corporation and subsidiaries appearing in this Quarterly Report on Form 10-Q for the quarter ended June 30, 2022, is incorporated by reference in Registration Statement Nos.

July 28, 2022 EX-10.1

Non-Employee Director Compensation Term Sheet, effective May 18, 2022 (incorporated by reference to Exhibit 10.1 to Form 10-Q for the quarter ended June 30, 2022, filed July 28, 2022, File No. 001-16411)

Exhibit 10.1 Fees and Expenses (effective as of May 18, 2022) Retainer: Retainer fees are paid quarterly, at the end of each quarter. Fees are as follows: Annual cash retainer: $140,000 Additional retainer for Lead Independent Director: $50,000 Additional retainer for Audit Committee: $15,000 Additional retainer for Audit Committee chair: $25,000 Additional retainer for Comp Committee chair: $25,0

July 28, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-16411 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as

July 28, 2022 EX-10.2

Consultant Contract dated as of April 11, 2022 by and

Exhibit 10.2 CONSULTANT CONTRACT BLAKE E. LARSON This agreement for consulting services ("Agreement") is between Northrop Grumman Systems Corporation, a Delaware corporation whose principal place of business is located at 2980 Fairview Park Drive, Falls Church, VA ("NGSC" or "the Company") and Blake E. Larson of Naples, FL ("Consultant" or "Mr. Larson") (each "a party", collectively "the parties")

July 28, 2022 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 28, 2022 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organizat

July 28, 2022 EX-99

Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511

EX-99 2 noc-06302022xearningsrelea.htm EARNINGS RELEASE Exhibit 99 News Release Contact: Vic Beck (Media) 703-280-4456 (office) [email protected] Todd Ernst (Investors) 703-280-4535 (office) [email protected] Northrop Grumman Reports Second Quarter 2022 Financial Results •Awards of $13.0 Billion, Book to Bill of 1.48 •Backlog Increases 6% to $80 Billion During the Second Quarter •Sales of $8.8 Bil

June 16, 2022 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission file number: 1-16411 A. Full title of the plan and address of

June 16, 2022 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission file number: 1-16411 A. Full title of the plan and address of

May 23, 2022 EX-1.01

Conflict Minerals Report of Northrop Grumman Corporation

Exhibit 1.01 Conflict Minerals Report Conflict Minerals Report of Northrop Grumman Corporation For the Year Ended December 31, 2021 Section 1: Introduction This Conflict Minerals Report ("Report") of Northrop Grumman Corporation (herein referred to as "Northrop Grumman," the "company," "we," "us," or "our") has been prepared pursuant to Rule 13p-1 (the "Rule") and Form SD promulgated under the Sec

May 23, 2022 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 18, 2022 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organizati

May 23, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT NORTHROP GRUMMAN CORPORATION (Exact name of the registrant as specified in its charter) Delaware 1-16411 (State or Other Jurisdiction of Inc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT NORTHROP GRUMMAN CORPORATION (Exact name of the registrant as specified in its charter) Delaware 1-16411 (State or Other Jurisdiction of Incorporation) (Commission File Number) 2980 Fairview Park Drive, Falls Church VA 22042 (Address of Principal Executive Offices) (Zip Code) Michael A. Ha

May 12, 2022 424B3

NORTHROP GRUMMAN CORPORATION Offer to Exchange

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No 333-264549 PROSPECTUS NORTHROP GRUMMAN CORPORATION Offer to Exchange This is an offer by Northrop Grumman Corporation, a Delaware corporation (?Northrop Grumman?), to exchange: (1) up to $76,490,000 7.

May 11, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement Defin

May 10, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement Defin

May 10, 2022 CORRESP

NORTHROP GRUMMAN CORPORATION 2980 Fairview Park Drive Falls Church, Virginia 22042 (703) 280–2900

NORTHROP GRUMMAN CORPORATION 2980 Fairview Park Drive Falls Church, Virginia 22042 (703) 280?2900 Via EDGAR United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

May 4, 2022 LETTER

LETTER

United States securities and exchange commission logo May 4, 2022 Kathy Warden Chief Executive Officer Northrop Grumman Corp.

April 28, 2022 EX-10.2

2022 Restricted Stock Rights Grant Agreement Granted Under the 2011 Long-Term Incentive Stock Plan (incorporated by reference to Exhibit 10.2 to Form 10-Q for the quarter ended March 31, 2022, filed April 28, 2022, File No. 001-16411)

Exhibit 10.2 NORTHROP GRUMMAN CORPORATION 2022 RESTRICTED STOCK RIGHTS GRANT AGREEMENT This 2022 Restricted Stock Rights Grant Agreement (?Agreement?) applies to certain ?Restricted Stock Rights? (?RSRs?) granted by Northrop Grumman Corporation (the ?Company?) in 2022 under its 2011 Long-Term Incentive Stock Plan. If you were granted an RSR award by the Company in 2022, the date of grant of your R

April 28, 2022 EX-10.3

2022 Restricted Performance Stock Rights Grant Agreement Specifying Terms and Conditions Applicable to 2022 Restricted Performance Stock Rights Granted under the 2011 Long-Term Incentive Stock Plan

Exhibit 10.3 NORTHROP GRUMMAN CORPORATION 2022 RESTRICTED PERFORMANCE STOCK RIGHTS GRANT AGREEMENT This 2022 Restricted Performance Stock Rights Grant Agreement (?Agreement?) applies to certain ?Restricted Performance Stock Rights? (?RPSRs?) granted by Northrop Grumman Corporation (the ?Company?) in 2022 under its 2011 Long-Term Incentive Stock Plan. If you were granted an RPSR award by the Compan

April 28, 2022 EX-15

Letter from Independent Registered Public Accounting Firm

NORTHROP GRUMMAN CORPORATION EXHIBIT 15 LETTER FROM INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM April 27, 2022 The Board of Directors and Stockholders of Northrop Grumman Corporation Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 We are aware that our report dated April 27, 2022, on our review of the interim financial information of Northrop Grumman Corporation and subsidiaries appearing in this Quarterly Report on Form 10-Q for the quarter ended March 31, 2022, is incorporated by reference in Registration Statement Nos.

April 28, 2022 EX-25.1

Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939, as amended, of the Bank if New York Mellon, as trustee under the Indenture dated as of November 21, 2001.

Exhibit 25.1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ? CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON (Exact name of trustee as specified in its charter) New York 13-5160382 (Ju

April 28, 2022 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule(1) Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate(2) Amount of Registration Fee Carry Forward Form Type Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid Debt 7.

April 28, 2022 EX-10.1

Group Personal Excess Liability Policy effective January 1, 2022

Exhibit 10.1 GROUP PERSONAL EXCESS LIABILITY POLICY INTRODUCTION This is your Chubb Group Personal Excess Liability Policy. Together with your Coverage Summary, it explains your coverages and other conditions of your insurance in detail. This policy is a contract between you and us. READ YOUR POLICY CAREFULLY and keep it in a safe place. Agreement We agree to provide the insurance described in thi

April 28, 2022 EX-99

1 Non-GAAP measure - see definitions at the end of this earnings release. Northrop Grumman Corporation 2980 Fairview Park Drive • Falls Church, VA 22042-4511 news.northropgrumman.com

Exhibit 99 News Release Contact: Vic Beck (Media) 703-280-4456 (office) [email protected] Todd Ernst (Investors) 703-280-4535 (office) [email protected] Northrop Grumman Reports First Quarter 2022 Financial Results ?Sales of $8.8 billion; Organic Sales1 Decrease 2 Percent ?Operating Margin Rate of 10.2 Percent, Segment Operating Margin Rate1 of 11.8 Percent ?Diluted Earnings per Share of $6.10 ?20

April 28, 2022 EX-99.2

Form of Letter to Clients.

Exhibit 99.2 NORTHROP GRUMMAN CORPORATION OFFER TO EXCHANGE Up to $76,490,000 aggregate principal amount of 7.875% Senior Notes due 2026, $47,828,000 aggregate principal amount of 7.750% Senior Notes due 2026, $38,859,000 aggregate principal amount of 6.650% Senior Notes due 2028, $79,323,000 aggregate principal amount of 7.750% Senior Notes due 2029, $166,864,000 aggregate principal amount of 7.7

April 28, 2022 EX-15.1

Awareness Letter of Deloitte & Touche LLP, an independent registered public accounting firm.

Exhibit 15.1 April 27, 2022 The Board of Directors and Stockholders of Northrop Grumman Corporation Northrop Grumman Corporation 2980 Fairview Park Drive Falls Church, Virginia 22042 We are aware that our report dated April 27, 2022, on our review of interim financial information of Northrop Grumman Corporation and subsidiaries appearing in Northrop Grumman Corporation?s Quarterly Report on Form 1

April 28, 2022 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 28, 2022 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organiza

April 28, 2022 EX-99.3

Form of Letter to Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees.

Exhibit 99.3 NORTHROP GRUMMAN CORPORATION OFFER TO EXCHANGE Up to $76,490,000 aggregate principal amount of 7.875% Senior Notes due 2026, $47,828,000 aggregate principal amount of 7.750% Senior Notes due 2026, $38,859,000 aggregate principal amount of 6.650% Senior Notes due 2028, $79,323,000 aggregate principal amount of 7.750% Senior Notes due 2029, $166,864,000 aggregate principal amount of 7.7

April 28, 2022 S-4

As filed with the Securities and Exchange Commission on April 28, 2022

Table of Contents As filed with the Securities and Exchange Commission on April 28, 2022 Registration No.

April 28, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-16411 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as

April 28, 2022 EX-99.1

Form of Letter of Transmittal.

Exhibit 99.1 LETTER OF TRANSMITTAL NORTHROP GRUMMAN CORPORATION OFFER TO EXCHANGE Up to $76,490,000 aggregate principal amount of 7.875% Senior Notes due 2026, $47,828,000 aggregate principal amount of 7.750% Senior Notes due 2026, $38,859,000 aggregate principal amount of 6.650% Senior Notes due 2028, $79,323,000 aggregate principal amount of 7.750% Senior Notes due 2029, $166,864,000 aggregate p

April 1, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement Defin

February 18, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 15, 2022 NORTHROP GRUMMAN CORPORATION (Exact name of registrant as specified in its charter) Delaware 1-16411 80-0640649 (State or Other Jurisdiction of Incorporation or Organ

February 14, 2022 SC 13G/A

NOC / Northrop Grumman Corporation / STATE STREET CORP Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 AMENDED FILING NORTHROP GRUMMAN CORP (NAME OF ISSUER) COMMON STOCK (TITLE OF CLASS OF SECURITIES) 666807102 (CUSIP NUMBER) 12/31/2021 (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT) CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE PURSUANT TO WHICH THIS SCHEDULE IS

February 11, 2022 SC 13G/A

NOC / Northrop Grumman Corporation / Capital International Investors - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4 )* Northrop Grumman Corp. (Name of Issuer) Common Stock (Title of Class of Securities) 666807102 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this

February 10, 2022 SC 13G/A

NOC / Northrop Grumman Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)* Name of issuer: Northrop Grumman Corp. Title of Class of Securities: Common Stock CUSIP Number: 666807102 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed

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