# EDGAR Filing Document

**Accession Number:** 0001986485
**File Stem:** 0001628280-26-008127
**Filing Date:** 2026-2
**Character Count:** 8824
**Document Hash:** d6046badb50bbbca7f0852ef9efc77e8
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-26-008127.hdr.sgml**: 20260213

**ACCESSION NUMBER**: 0001628280-26-008127

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260211

**FILED AS OF DATE**: 20260213

**DATE AS OF CHANGE**: 20260213

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Simpson Kathryn G
- **CENTRAL INDEX KEY:** 0001986485

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-16411
- **FILM NUMBER:** 26633100

**MAIL ADDRESS:**
- **STREET 1:** 2980 FAIRVIEW PARK DRIVE
- **CITY:** FALLS CHURCH
- **STATE:** VA
- **ZIP:** 22042
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NORTHROP GRUMMAN CORP /DE/
- **CENTRAL INDEX KEY:** 0001133421
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEARCH, DETECTION, NAVIGATION, GUIDANCE, AERONAUTICAL SYS [3812]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 800640649
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 2980 FAIRVIEW PARK DRIVE
- **STREET 2:** C/O NORTHROP GRUMMAN CORP
- **CITY:** FALLS CHURCH
- **STATE:** VA
- **ZIP:** 22042
- **BUSINESS PHONE:** 703-280-2900

**MAIL ADDRESS:**
- **STREET 1:** 2980 FAIRVIEW PARK DRIVE
- **STREET 2:** C/O NORTHROP GRUMMAN CORP
- **CITY:** FALLS CHURCH
- **STATE:** VA
- **ZIP:** 22042

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NNG INC
- **DATE OF NAME CHANGE:** 20010129

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>Simpson Kathryn G<br><sub>(Last) (First) (Middle)</sub><br>2980 FAIRVIEW PARK DRIVE<br><sub>(Street)</sub><br>FALLS CHURCH, VA 22042<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-11 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Corp VP & General Counsel_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>NORTHROP GRUMMAN CORP /DE/ [ NOC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2026-02-11 |  | M |  | 1334.96 | A | $0 | 2114.39 | D |  |
| Common Stock | 2026-02-11 |  | F |  | 461 | D | $678.83 | 1653.39 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Restricted Performance Stock Rights | <sup>(1)</sup> | 2026-02-11 |  | A |  | 3619.96<sup>(2)</sup> |  | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 3619.96 | $0 | 12579.96<sup>(3)</sup> | D |  |
| Restricted Stock Rights | <sup>(4)</sup> | 2026-02-11 |  | A |  | 1471 |  | <sup>(4)</sup> | <sup>(5)</sup> | Common Stock | 1471 | $0 | 5555<sup>(6)</sup> | D |  |
| Restricted Performance Stock Rights | <sup>(1)</sup> | 2026-02-11 |  | M |  |  | 1334.96 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 1334.96 | $0 | 11245<sup>(7)</sup> | D |  |

---

### Footnotes:

(1) Each Restricted Performance Stock Right ("RPSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock.  The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period.  Grants awarded pursuant to Rule 16b-3(d).

(2) The RPSRs acquired include (i) 432.96 vested RPSRs with respect to the measurement period ended 12/31/25 acquired due to settlement of the RPSRs granted under the 2011 Long-Term Incentive Stock Plan ("2011 LTISP") on 2/16/23 that resulted in settlement at 148% of the target award; and (ii) 3,187 unvested RPSRs granted under the 2024 Long-Term Incentive Stock Plan (the "2024 LTISP") on 2/11/26 with a measurement period ending on 12/31/28.  A total of 1,334.96 shares were issued in settlement of the 2023 RPSRs with a measurement period that ended 12/31/25, and the target award amount of 902 RPSRs was previously reported in connection with the grant of the 2023 RPSRs.

(3) Total amount includes (i) 1,334.96 vested RPSRs granted under the 2011 LTISP on 2/16/23 with a measurement period ended on 12/31/25; (ii) 3,774 RPSRs granted under the 2011 LTISP on 2/14/24 with a measurement period ending on 12/31/26; (iii) 4,284 RPSRs granted under the 2024 LTISP on 2/18/25 with a measurement period ending on 12/31/27; and (iv) 3,187 RPSRs granted under the 2024 LTISP on 2/11/26 with a measurement period ending on 12/31/28.

(4) Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares in Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

(5) The RSRs were granted under the 2024 LTISP on 2/11/26 and will vest on 2/12/29.

(6) Total amount includes (i) 387 RSRs granted under the 2011 LTISP on 2/16/23 that will vest on 2/17/26; (ii) 1,732 RSRs granted under the 2011 LTISP on 2/14/24 that will vest on 2/16/27; (iii) 1,965 RSRs granted under the 2024 LTISP on 2/18/25 that will vest on 2/18/28; and (iv) 1,471 RSRs granted under 2024 LTISP on 2/11/26 that will vest on 2/12/29.

(7) Total amount includes (i) 3,774 RPSRs granted under the 2011 LTISP on 2/14/24 with a measurement period ending on 12/31/26; (ii) 4,284 RPSRs granted under the 2024 LTISP on 2/18/25 with a measurement period ending on 12/31/27; and (iii) 3,187 RPSRs granted under the 2024 LTISP on 2/11/26 with a measurement period ending 12/31/28.

**Signature:** /s/ Jennifer C. McGarey, Attorney-in-Fact  
**Date:** 2026-02-13

### Remarks:

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.**