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

Rhea-AI Filing Summary

Huntington Ingalls Industries director/officer Thomas E. Stiehle received 21.183 dividend-equivalent Restricted Stock Rights (RSRs) on 09/12/2025 under the company's 2022 Long-Term Incentive Stock Plan. The RSRs are contingent rights that convert to the equivalent number of common shares, cash, or a mix at the Compensation Committee's discretion and vest in three equal annual installments beginning on the grant date. The newly credited dividend-equivalent RSRs were valued at $0 per unit for this report and increase Stiehle's total beneficial ownership to 4,331.584 shares of common stock following the transaction. The Form 4 was signed by an attorney-in-fact on 09/15/2025.

Insights

Corporate Governance Expert

TL;DR Officer received dividend-equivalent RSRs that modestly increase disclosed beneficial ownership without immediate cash cost.

The filing documents a grant of dividend-equivalent Restricted Stock Rights credited after a dividend payment, which is an administrative adjustment under the 2022 LTISP rather than a new cash compensation event. The RSRs remain subject to vesting in three equal installments and to the Compensation Committee's settlement discretion (shares, cash, or combination). This is routine executive compensation disclosure and does not indicate change in governance or control. The impact on outstanding equity is immaterial based on quantities disclosed.

Executive Compensation Analyst

TL;DR Dividend-equivalent RSRs were credited, reflecting standard post-dividend adjustments under the LTISP.

The report shows 21.183 RSRs credited as dividend equivalents, calculated by dividing the dividend on RSRs by the closing stock price on the dividend date as described in the plan. The RSRs carry $0 price in the Form 4 because they are dividend credits, not purchases. The aggregate beneficial ownership of 4,331.584 shares provides context on the officer's holdings; the RSRs will vest over the next three years per plan terms and remain subject to settlement rules.

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).

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^*

Stiehle Thomas E.

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Ex. VP and CFO

3. Date of Earliest Transaction (Month/Day/Year)
09/12/2025

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

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
Restricted Stock Rights	(1)	09/12/2025		A		21.183(2)		(1)	(1)	Common Stock	21.183	$0	4,331.584	D

Explanation of Responses:

1. Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan ("LTISP") and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

2. The amount acquired represents dividend equivalent rights on the RSRs, which are credited following payment of the Company's quarterly cash dividend. Pursuant to the LTISP, the number of dividend equivalent rights acquired is calculated by dividing the aggregate amount of the dividend paid on the total number of RSRs 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	09/15/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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