NORTHROP GRUMMAN CORP /DE/ (NOC) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-20 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: NORTHROP GRUMMAN CORP /DE/ (NOC) CIK: 0001133421 --- Reporting Owner --- Name: WELSH MARK A III CIK: 0001692554 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-05-20 | Code: A (Grant or award) Shares: +349 | Price: $552.17 Total Value: $192,707.33 Shares Owned After: 4,470 | Ownership: D (Direct) Footnotes: [F1] Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3. [F1] Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3. [F2] Amount includes (i) 488 shares of common stock; and (ii) 3,982 shares of common stock, including dividends, held in a stock unit account pursuant to the Plan and the Northrop Grumman 2011 Long-Term Incentive Stock Plan. Dividends earned on shares held in the stock unit account were exempt from Section 16 and not reportable under Rule 16a-11. --- Footnotes (Complete Index) --- F1: Represents shares of common stock deferred into a stock unit account pursuant to the Northrop Grumman 2024 Long-Term Incentive Stock Plan (the "Plan") in a transaction exempt pursuant to Rule 16b-3. F2: Amount includes (i) 488 shares of common stock; and (ii) 3,982 shares of common stock, including dividends, held in a stock unit account pursuant to the Plan and the Northrop Grumman 2011 Long-Term Incentive Stock Plan. Dividends earned on shares held in the stock unit account were exempt from Section 16 and not reportable under Rule 16a-11. --- Signature --- /s/ /s/ Jennifer C. McGarey, Attorney-in-Fact (2026-05-21)