Thomas E. Stiehle - 06 Mar 2026 Form 4 Insider Report for HUNTINGTON INGALLS INDUSTRIES, INC. (HII)

Role: Ex. VP and CFO
Signature: /s/ Tiffany M. King, Attorney-in-Fact
Issuer symbol: HII
Transactions as of: 06 Mar 2026
Net transactions value: -$1,937,430
Form type: 4
Filing time: 09 Mar 2026, 16:13:48 UTC
Previous filing: 02 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Stiehle Thomas E.	Ex. VP and CFO	4101 WASHINGTON AVENUE, NEWPORT NEWS	/s/ Tiffany M. King, Attorney-in-Fact	09 Mar 2026	0001846302

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	HII	Common Stock	Sale	$1,937,430	-4,500	-15%	$430.54	24,954	06 Mar 2026	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the weighted average sale price of $430.54 rounded to the nearest hundredth. The highest price at which the shares were sold was $430.97 and the lowest price at which the shares were sold was $430.45. 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.

Content

Represents the weighted average sale price of $430.54 rounded to the nearest hundredth. The highest price at which the shares were sold was $430.97 and the lowest price at which the shares were sold was $430.45. 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.