HII EVP sells 1,700 shares in open-market trade

Huntington Ingalls Industries executive Eric D. Chewning, EVP, Maritime Systems & Corporate Strategy, sold 1,700 shares of common stock in an open-market transaction on March 4, 2026 at a price of $433.44 per share.

Rhea-AI Filing Summary

Huntington Ingalls Industries executive Eric D. Chewning, EVP, Maritime Systems & Corporate Strategy, sold 1,700 shares of common stock in an open-market transaction on March 4, 2026 at a price of $433.44 per share. After this sale, he directly owns 1,949.488 shares of Huntington Ingalls Industries common stock.

Insider Trade Summary

Net Seller: 1,700 shares

Net Sell 1 txn

Insider Chewning Eric D.

Role EVP, Maritime Sys & Corp STR

Sold 1,700 shs ($737K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,700	$433.44	$737K

Holdings After Transaction: Common Stock — 1,949.488 shares (Direct)

FAQ

What insider transaction did HII executive Eric D. Chewning report?

Eric D. Chewning reported selling 1,700 shares of Huntington Ingalls Industries common stock. The transaction was an open-market sale of non-derivative securities, recorded on March 4, 2026, as shown in the Form 4 insider filing data.

At what price did Eric D. Chewning sell HII common stock shares?

Eric D. Chewning sold his Huntington Ingalls Industries common stock at $433.44 per share. This price per share is explicitly listed for the 1,700-share open-market sale dated March 4, 2026, in the Form 4 transaction details.

How many HII shares does Eric D. Chewning own after the reported sale?

After the sale, Eric D. Chewning directly owns 1,949.488 shares of Huntington Ingalls Industries common stock. This post-transaction holding amount is reported as the total shares following the transaction in the Form 4 data.

What type of transaction did HII executive Eric D. Chewning execute?

Eric D. Chewning executed an open-market sale of non-derivative common stock. The Form 4 classifies the transaction under code “S,” described as a sale in open market or private transaction, with a transaction direction labeled as sell.

Does Eric D. Chewning hold HII shares directly or indirectly after this Form 4?

Eric D. Chewning holds his Huntington Ingalls Industries common stock directly after this transaction. The ownership type is reported as direct, with the direct_or_indirect field marked “D” and no additional indirect ownership footnotes disclosed.

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Accepted by SEC EDGAR 03/05/2026 - 04:27 PM 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^*

Chewning Eric D.

(Last) (First) (Middle)

C/O HUNTINGTON INGALLS INDUSTRIES, INC.

4101 WASHINGTON AVE.

(Street)

NEWPORT NEWS VA 23607

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
HUNTINGTON INGALLS INDUSTRIES, INC. [ HII ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Maritime Sys & Corp STR

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

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

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

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

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	03/04/2026		S		1,700	D	$433.44	1,949.488	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:

Remarks:

	/s/ Tiffany M. King, Attorney-in-Fact	03/05/2026
	** 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.