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

Rhea-AI Filing Summary

Huntington Ingalls Industries, Inc. director Augustus L. Collins reported a transaction dated 10/01/2025 showing 10,499.775 shares of common stock were acquired and recorded as stock units under the company’s 2022 Long-Term Incentive Stock Plan. The filing lists a per-share price of $286.01 and identifies the transaction as exempt under Rule 16b-3 because the shares were deferred into a stock unit account pursuant to the LTIP. The Form 4 was signed by an attorney-in-fact on 10/02/2025. The report indicates direct beneficial ownership of 10,499.775 shares following the transaction and that the reporting person is a director of the issuer (ticker: HII).

Positive

• 10,499.775 shares were deferred into the 2022 Long-Term Incentive Stock Plan, indicating continued alignment with shareholder equity incentives
• Transaction is exempt under Rule 16b-3, reflecting a plan-based, compliant compensation deferral

Negative

• None.

Insights

Corporate Governance Analyst

Director deferred 10,499.775 shares into LTIP stock units at $286.01.

This Form 4 documents a non-derivative acquisition by director Augustus L. Collins on 10/01/2025, recorded as a deferral into the 2022 Long-Term Incentive Stock Plan and treated as an exempt transaction under Rule 16b-3. The filing shows 10,499.775 shares beneficially owned after the transaction, reflecting compensation deferral rather than an open-market purchase.

The exemption and plan-based deferral mean the transaction is a routine executive compensation event rather than a market signal; it confirms continued alignment with shareholder interests through deferred equity.

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

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

1. Name and Address of Reporting Person^*

Collins Augustus L

(Last) (First) (Middle)

4101 WASHINGTON AVENUE

(Street)

NEWPORT NEWS VA 236074

(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
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2025

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 (SUA)	10/01/2025		A		144(1)	A	$286.01	10,499.775	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. Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan in an exempt transaction pursuant to Rule 16b-3.

Remarks:

	/s/ Tiffany M. King, Attorney-in-Fact	10/02/2025
	** 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 the Form 4 for HII filed by Augustus L. Collins report?

The Form 4 reported acquisition of 10,499.775 common shares deferred into a stock unit account under the 2022 Long-Term Incentive Stock Plan on 10/01/2025 at a stated price of $286.01.

Was the transaction on the Form 4 an open-market purchase for HII (ticker: HII)?

No. The filing states the shares were deferred into a stock unit account pursuant to the company’s LTIP and treated as an exempt transaction under Rule 16b-3.

How many HII shares does the reporting person beneficially own after the transaction?

The Form 4 shows beneficial ownership of 10,499.775 shares following the reported transaction.

Who signed the Form 4 and when was it signed?

The Form 4 was signed by Tiffany M. King, Attorney-in-Fact on 10/02/2025.

What relationship does the reporting person have to HII?

The reporting person, Augustus L. Collins, is listed as a Director of Huntington Ingalls Industries.