Northrop Grumman director Brown acquires 96 shares

The reported stock-unit balance includes dividends earned on shares held in the account.

Rhea-AI Filing Summary

Northrop Grumman director Marianne Catherine Brown acquired 96 shares of common stock on September 30, 2026, deferred into a stock unit account under the Northrop Grumman 2024 Long-Term Incentive Stock Plan. The transaction lists a reported per-share amount of $483.48. Her reported holdings after the transaction were 11,706 shares, including dividends held in the stock unit account.

Insider Trade Summary

Grant/Award: 96 shares

Grant/Award 1 txn

Insider Brown Marianne Catherine

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1, F2	96	$483.48	$46K

Holdings After Transaction: Common Stock — 11,706 shares (Direct)

Footnotes (2)

1. 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.
2. F2. Represents shares of common stock, including dividends, held in a stock unit account pursuant to the Plan. Dividends earned on shares held in the stock unit account were exempt from Section 16 and not reportable under rule 16a-11.

Key Figures

Shares acquired: 96 shares Reported per-share price: $483.48 per share Shares held after transaction: 11,706 shares

3 metrics

Shares acquired 96 shares Common stock deferred into a stock unit account on September 30, 2026

Reported per-share price $483.48 per share For the September 30, 2026 transaction

Shares held after transaction 11,706 shares Common stock held in a stock unit account, including dividends

Key Terms

stock unit account, Rule 16b-3, Rule 16a-11

3 terms

stock unit account financial

"shares of common stock deferred into a stock unit account"

Rule 16b-3 regulatory

"in a transaction exempt pursuant to Rule 16b-3"

Rule 16b-3 is a Securities and Exchange Commission regulation that exempts certain routine, pre-approved transactions by company insiders from automatic liability for short-term trading profits. It acts like a safe harbor: if an insider follows a formal plan or the board approves specific transactions in advance, profits from buying and selling company stock within six months are not automatically reclaimed. Investors care because the rule clarifies when insider trades are permissible and reduces uncertainty about potential clawbacks.

Rule 16a-11 regulatory

"not reportable under rule 16a-11"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What plan covered Marianne Catherine Brown’s NOC stock deferral?

The 96 shares were deferred into a stock unit account pursuant to Northrop Grumman’s 2024 Long-Term Incentive Stock Plan; the transaction was exempt pursuant to Rule 16b-3.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/01/2026 - 11:05 AM Accepted by SEC EDGAR 10/01/2026 - 11:04 AM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Brown Marianne Catherine

(Last) (First) (Middle)

2980 FAIRVIEW PARK DRIVE

(Street)

FALLS CHURCH VIRGINIA 22042

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
NORTHROP GRUMMAN CORP /DE/ [ NOC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/30/2026		A		96(1)	A	$483.48	11,706(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

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

Remarks:

	/s/ Jennifer C. McGarey, Attorney-in-Fact	10/01/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)