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  4. [Form 4] NORTHROP GRUMMAN CORP /DE/ Insider Trading Activity

Northrop Grumman (NYSE: NOC) director sells 95 shares under plan

Filing Impact
(Neutral)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Northrop Grumman director Mark A. Welsh III sold 95 shares of common stock in pre-planned transactions. On May 4, 2026, he executed 11 open-market sales at prices between $566.60 and $577.05 per share under a Rule 10b5-1 trading plan adopted on August 23, 2025. After these sales, he directly owned 4,121 Northrop Grumman shares.

Positive

  • None.

Negative

  • None.
Insider WELSH MARK A III
Role null
Sold 95 shs ($54K)
Type Security Shares Price Value
Sale Common Stock 1 $566.60 $566.60
Sale Common Stock 5 $568.75 $3K
Sale Common Stock 9 $569.49 $5K
Sale Common Stock 43 $570.47 $25K
Sale Common Stock 3 $571.74 $2K
Sale Common Stock 6 $572.72 $3K
Sale Common Stock 14 $573.51 $8K
Sale Common Stock 2 $574.51 $1K
Sale Common Stock 4 $575.59 $2K
Sale Common Stock 7 $576.38 $4K
Sale Common Stock 1 $577.05 $577.05
Holdings After Transaction: Common Stock — 4,215 shares (Direct, null)
Footnotes (1)
  1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 23, 2025. Represents the weighted average sale price of $568.75 rounded to the nearest hundredth. The highest price at which the shares were sold was $568.92 and the lowest price at which the shares were sold was $568.49. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4. Represents the weighted average sale price of $569.49 rounded to the nearest hundredth. The highest price at which the shares were sold was $569.97 and the lowest price at which the shares were sold was $569.01. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4. Represents the weighted average sale price of $570.47 rounded to the nearest hundredth. The highest price at which the shares were sold was $570.84 and the lowest price at which the shares were sold was $570.25. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4. Represents the weighted average sale price of $571.74 rounded to the nearest hundredth. The highest price at which the shares were sold was $571.98 and the lowest price at which the shares were sold was $571.32. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4. Represents the weighted average sale price of $572.72 rounded to the nearest hundredth. The highest price at which the shares were sold was $572.98 and the lowest price at which the shares were sold was $572.51. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4. Represents the weighted average sale price of $573.51 rounded to the nearest hundredth. The highest price at which the shares were sold was $573.80 and the lowest price at which the shares were sold was $573.14. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4. Represents the weighted average sale price of $574.51 rounded to the nearest hundredth. The highest price at which the shares were sold was $574.66 and the lowest price at which the shares were sold was $574.35. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4. Represents the weighted average sale price of $575.59 rounded to the nearest hundredth. The highest price at which the shares were sold was $575.99 and the lowest price at which the shares were sold was $575.38. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4. Represents the weighted average sale price of $576.38 rounded to the nearest hundredth. The highest price at which the shares were sold was $576.87 and the lowest price at which the shares were sold was $576.03. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.
Shares sold 95 shares Total common stock sold on May 4, 2026 across 11 trades
Sale price range $566.60–$577.05 per share Lowest and highest reported transaction prices on May 4, 2026
Post-transaction holdings 4,121 shares Direct Northrop Grumman common stock owned after reported sales
Number of sale transactions 11 transactions Open-market sales of common stock reported in this Form 4
Trading plan adoption date August 23, 2025 Adoption date of Rule 10b5-1 trading plan used for these sales
Rule 10b5-1 trading plan regulatory
"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average sale price financial
"Represents the weighted average sale price of $568.75 rounded to the nearest hundredth"
open-market sale financial
"transaction_action": "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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).
X
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*
WELSH MARK A III
(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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/04/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock05/04/2026S1(1)D$566.64,215D
Common Stock05/04/2026S5(1)D$568.75(2)4,210D
Common Stock05/04/2026S9(1)D$569.49(3)4,201D
Common Stock05/04/2026S43(1)D$570.47(4)4,158D
Common Stock05/04/2026S3(1)D$571.74(5)4,155D
Common Stock05/04/2026S6(1)D$572.72(6)4,149D
Common Stock05/04/2026S14(1)D$573.51(7)4,135D
Common Stock05/04/2026S2(1)D$574.51(8)4,133D
Common Stock05/04/2026S4(1)D$575.59(9)4,129D
Common Stock05/04/2026S7(1)D$576.38(10)4,122D
Common Stock05/04/2026S1(1)D$577.054,121D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 23, 2025.
2. Represents the weighted average sale price of $568.75 rounded to the nearest hundredth. The highest price at which the shares were sold was $568.92 and the lowest price at which the shares were sold was $568.49. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.
3. Represents the weighted average sale price of $569.49 rounded to the nearest hundredth. The highest price at which the shares were sold was $569.97 and the lowest price at which the shares were sold was $569.01. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.
4. Represents the weighted average sale price of $570.47 rounded to the nearest hundredth. The highest price at which the shares were sold was $570.84 and the lowest price at which the shares were sold was $570.25. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.
5. Represents the weighted average sale price of $571.74 rounded to the nearest hundredth. The highest price at which the shares were sold was $571.98 and the lowest price at which the shares were sold was $571.32. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.
6. Represents the weighted average sale price of $572.72 rounded to the nearest hundredth. The highest price at which the shares were sold was $572.98 and the lowest price at which the shares were sold was $572.51. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.
7. Represents the weighted average sale price of $573.51 rounded to the nearest hundredth. The highest price at which the shares were sold was $573.80 and the lowest price at which the shares were sold was $573.14. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.
8. Represents the weighted average sale price of $574.51 rounded to the nearest hundredth. The highest price at which the shares were sold was $574.66 and the lowest price at which the shares were sold was $574.35. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.
9. Represents the weighted average sale price of $575.59 rounded to the nearest hundredth. The highest price at which the shares were sold was $575.99 and the lowest price at which the shares were sold was $575.38. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.
10. Represents the weighted average sale price of $576.38 rounded to the nearest hundredth. The highest price at which the shares were sold was $576.87 and the lowest price at which the shares were sold was $576.03. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.
Remarks:
/s/ Jennifer C. McGarey, Attorney-in-Fact05/05/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR

FAQ

What did Northrop Grumman (NOC) director Mark A. Welsh III report on this Form 4?

He reported selling 95 shares of Northrop Grumman common stock. The filing shows 11 open-market sale transactions on May 4, 2026, executed under a Rule 10b5-1 trading plan, with prices ranging from about $566.60 to $577.05 per share.

How many Northrop Grumman (NOC) shares does Mark A. Welsh III hold after the reported sales?

He directly holds 4,121 Northrop Grumman shares after the trades. The Form 4 lists this post-transaction ownership figure, giving investors a view of his remaining direct stake following the 95-share open-market sales.

At what prices did Mark A. Welsh III sell his Northrop Grumman (NOC) shares?

The reported sales occurred between roughly $566.60 and $577.05 per share. Individual transactions on May 4, 2026 show specific sale prices within this range for the 95 shares of common stock sold.

Was the Northrop Grumman (NOC) insider sale made under a Rule 10b5-1 plan?

Yes. The filing states the sales were made under a Rule 10b5-1 trading plan. A footnote explains that Mark A. Welsh III adopted this pre-arranged trading plan on August 23, 2025, indicating the timing of the sales was set in advance.

How many separate transactions did the Northrop Grumman (NOC) director execute in this Form 4?

The Form 4 reports 11 separate open-market sale transactions. All involved Northrop Grumman common stock on May 4, 2026, collectively totaling 95 shares sold and leaving Mark A. Welsh III with 4,121 shares held directly.

Does this Northrop Grumman (NOC) Form 4 show any option exercises or derivative transactions?

No, this Form 4 only reports non-derivative common stock sales. The derivativeSummary section is empty and the transactionSummary indicates zero exercises or derivative transactions, focusing solely on open-market sales of existing common shares.