[Form 4] HUNTINGTON INGALLS INDUSTRIES, INC. Insider Trading Activity

Rhea-AI Filing Summary

Huntington Ingalls Industries (HII) reported an insider transaction by its Director, President & CEO on 11/12/2025. The executive sold 15,000 shares of common stock at a weighted average price of $321.06, with individual sale prices ranging from $317.83 to $325.24, under a Rule 10b5-1 trading plan adopted on August 14, 2025.

Following the sale, beneficial holdings were reported as 68,139.087 shares held indirectly in the Kastner Family Trust, 100.25 shares held indirectly via a 401(k) plan, and 2,263.818 shares held directly.

Insights

Securities law analyst

Pre-planned insider sale disclosed; routine and neutral.

HII disclosed a Form 4 showing its Director, President & CEO sold 15,000 common shares on 11/12/2025 at a weighted average of $321.06, executed pursuant to a Rule 10b5-1 plan adopted on August 14, 2025. 10b5-1 plans automate trades to reduce discretion.

The filing lists post-transaction beneficial ownership as 68,139.087 shares indirectly via the Kastner Family Trust, 100.25 shares indirectly via a 401(k), and 2,263.818 shares directly. The disclosure does not address proceeds use; impact depends on future filings.

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).

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^*

Kastner Christopher D

(Last) (First) (Middle)

4101 WASHINGTON AVENUE

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Director, President & CEO

3. Date of Earliest Transaction (Month/Day/Year)
11/12/2025

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	11/12/2025		S		15,000(1)	D	$321.06(2)	68,139.087	I	Held in the Kastner Family Trust
Common Stock								100.25	I	By 401(k) Plan
Common Stock								2,263.818	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. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 14, 2025.

2. Represents the weighted average sale price of $321.06 rounded to the nearest hundredth. The highest price at which the shares were sold was $325.24 and the lowest price at which the shares were sold was $317.83. 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/ Tiffany M. King, Attorney-in-Fact	11/13/2025
	** 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.

FAQ

What did HII disclose on Form 4?

An insider sale of 15,000 shares of common stock on 11/12/2025 at a weighted average price of $321.06.

Was the HII insider sale under a 10b5-1 plan?

Yes. The sales were effected pursuant to a Rule 10b5-1 trading plan adopted on August 14, 2025.

What price range did the HII shares sell for?

The highest sale price was $325.24 and the lowest was $317.83.

How many HII shares does the insider report owning after the sale?

Reported holdings: 68,139.087 shares indirectly via the Kastner Family Trust, 100.25 indirectly via a 401(k), and 2,263.818 shares directly.

What is the insider’s role at HII (ticker: HII)?

The reporting person is a Director, President & CEO of Huntington Ingalls Industries.