NORTHROP GRUMMAN CORP /DE/ 10-Q

Item 5. Other Information During the quarter ended June 30, 2025 , none of our directors or officers (as defined in Rule 16a-1(f) of the Exchange Act) adopted or terminated a Rule 10b5-1 trading arrangement or non-Rule 10b5-1 trading arrangement, as those terms are defined in Item 408 of Regulation S-K. -38- Table of Contents NORTHROP GRUMMAN CORPORATION Item 6. Exhibits 4.1 Thirteenth Supplemental Indenture, dated as of May 29 , 202 5 , 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 May 29 , 202 5 , File No. 001-16411 ) 4.2 Form of 4.650 % Senior Note due 20 30 (included in Exhibit 4.1 ) (incorporated by reference to Exhibit 4.2 to Form 8-K filed May 29, 2025, File No. 001-16411 ) 4.3 Form of 5.250 % Senior Note due 20 35 (included in Exhibit 4.1) (incorporated by reference to Exhibit 4.3 to Form 8-K filed May 29, 2025, File No. 001-16411 ) *+10.1 Non-Employee Director Compensation Term Sheet, effective May 21 , 202 5 *15 Letter from Independent Registered Public Accounting Firm *31.1 Certification of Kathy J. Warden pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 *31.2 Certification of Kenneth B. Crews pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 **32.1 Certification of Kathy J. Warden pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 **32.2 Certification of Kenneth B. Crews pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 *101 Northrop Grumman Corporation Quarterly Report on Form 10-Q for the quarter ended June 30, 2025 , formatted as inline XBRL (Extensible Business Reporting Language): (i) the Cover Page, (ii) Condensed Consolidated Statements of Earnings and Comprehensive Income, (iii) Condensed Consolidated Statements of Financial Position, (iv) Condensed Consolidated Statements of Cash Flows, (v) Condensed Consolidated Statements of Changes in Shareholders’ Equity, (vi) Notes to Condensed Consolidated Financial Statements, and (vii) Other Information. The instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document. *104 Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101) + Management contract or compensatory plan or arrangement * Filed with this report ** Furnished with this report -39- Table of Contents NORTHROP GRUMMAN CORPORATION SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. NORTHROP GRUMMAN CORPORATION (Registrant) By: /s/ Michael A. Hardesty Michael A. Hardesty Corporate Vice President, Controller and Chief Accounting Officer (Principal Accounting Officer) Date: July 21, 2025 -40-