HII director granted 13.815 stock units

Huntington Ingalls Industries director receives dividend-based stock units Huntington Ingalls Industries, Inc. director Leo P. Denault acquired 13.815 director stock units (SUAs) of common stock on March 13, 2026.

Rhea-AI Filing Summary

Huntington Ingalls Industries director receives dividend-based stock units

Huntington Ingalls Industries, Inc. director Leo P. Denault acquired 13.815 director stock units (SUAs) of common stock on March 13, 2026. These were granted at no cash cost as dividend equivalents under the company’s long-term incentive stock plans.

Each SUA represents the right to receive one share of common stock, generally payable within 30 days after the director leaves the board. Following this grant, Denault directly holds a total of 4,175.344 SUAs, reflecting a modest, routine increase in his equity-based compensation.

Insider Trade Summary

Grant/Award: 13.815 shares

Grant/Award 1 txn

Insider DENAULT LEO P

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock (SUA)	13.815	$0.00	$0.00

Holdings After Transaction: Common Stock (SUA) — 4,175.344 shares (Direct)

Footnotes (1)

1. F1. Pursuant to the Huntington Ingalls Industries, Inc. 2012 and 2022 Long-Term Incentive Stock Plan (together, the "LTISPs"), dividend equivalents are credited on each director stock unit ("SUA") held by the Reporting Person following the payment of the Company's quarterly cash dividend. Each SUA represents a right to receive one share of Company common stock, which will generally become payable within 30 days following the date a non-employee director ceases to provide services as a member of the board of directors. The number of dividend equivalents acquired by the Reporting Person under the LTISPs is calculated by dividing the aggregate amount of the dividend paid on the total number of SUAs held by the Reporting Person by the closing price of a share of Company common stock on the dividend payment date.

FAQ

What did HII director Leo P. Denault report in this Form 4 filing?

Leo P. Denault reported receiving 13.815 director stock units (SUAs) of Huntington Ingalls Industries common stock as a grant at no cash cost, increasing his direct holdings to 4,175.344 SUAs under the company’s long-term incentive stock plans.

How were the 13.815 SUAs for HII’s Leo P. Denault calculated?

The 13.815 SUAs represent dividend equivalents. They are calculated by dividing the total cash dividend paid on all SUAs Denault already held by the closing price of Huntington Ingalls Industries common stock on the dividend payment date, then credited as additional SUAs.

What does each SUA reported by HII’s director Leo P. Denault represent?

Each SUA reported by Leo P. Denault represents the right to receive one share of Huntington Ingalls Industries common stock. These shares generally become payable within 30 days after a non-employee director stops serving on the board of directors, according to the company’s incentive plans.

When will Leo P. Denault receive Huntington Ingalls Industries shares for his SUAs?

Leo P. Denault’s SUAs will generally convert into Huntington Ingalls Industries common shares within 30 days after he ceases serving as a non-employee director. Until then, they remain as stock units that accumulate dividend equivalents over time under the long-term incentive plans.

How many Huntington Ingalls Industries SUAs does Leo P. Denault hold after this transaction?

After acquiring 13.815 additional SUAs, Leo P. Denault directly holds 4,175.344 SUAs tied to Huntington Ingalls Industries common stock. This total reflects his accumulated director stock units, including the most recent dividend-equivalent grant under the 2012 and 2022 long-term incentive stock plans.

Did Leo P. Denault buy or sell HII shares on the open market in this Form 4?

No open-market purchase or sale occurred. Leo P. Denault received 13.815 SUAs as a grant of dividend equivalents at a reported price of $0.00 per unit, under Huntington Ingalls Industries’ long-term incentive stock plans, rather than through a market trade.

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Accepted by SEC EDGAR 03/16/2026 - 04:15 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^*

DENAULT LEO P

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

3. Date of Earliest Transaction (Month/Day/Year)
03/13/2026

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 (SUA)	03/13/2026		A		13.815(1)	A	$0	4,175.344	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. Pursuant to the Huntington Ingalls Industries, Inc. 2012 and 2022 Long-Term Incentive Stock Plan (together, the "LTISPs"), dividend equivalents are credited on each director stock unit ("SUA") held by the Reporting Person following the payment of the Company's quarterly cash dividend. Each SUA represents a right to receive one share of Company common stock, which will generally become payable within 30 days following the date a non-employee director ceases to provide services as a member of the board of directors. The number of dividend equivalents acquired by the Reporting Person under the LTISPs is calculated by dividing the aggregate amount of the dividend paid on the total number of SUAs held by the Reporting Person by the closing price of a share of Company common stock on the dividend payment date.

Remarks:

	/s/ Tiffany M. King, Attorney-in-Fact	03/16/2026
	** 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.