HII / Huntington Ingalls Industries, Inc. - SEC Filings, Annual Report, Proxy Statement

Huntington Ingalls Industries, Inc.
US ˙ NYSE ˙ US4464131063

Basic Stats
LEI 5TZLZ6WJTBVJ0QWBG121
CIK 1501585
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Huntington Ingalls Industries, Inc.
SEC Filings (Chronological Order)
This page provides a complete, chronological list of SEC Filings, excluding ownership filings which we provide elsewhere.
July 31, 2025 EX-99.2

Q2 2025 Earnings Call Chris Kastner President and CEO Tom Stiehle EVP and CFO July 31, 2025 Recently launched Virginia-class submarine Arkansas (SSN 800) Exhibit 99.2 Q2 2025 EARNINGS Cautionary Statement Regarding Forward-looking Statements Statemen

hiiq22025earningspresent Q2 2025 Earnings Call Chris Kastner President and CEO Tom Stiehle EVP and CFO July 31, 2025 Recently launched Virginia-class submarine Arkansas (SSN 800) Exhibit 99.

July 31, 2025 EX-99.1

HII Reports Second Quarter 2025 Results

Exhibit 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Christie Thomas (Investors) [email protected] 757-380-2104 HII Reports Second Quarter 2025 Results NEWPORT NEWS, Va. (July 31, 2025) - HII (NYSE: HII) today reported results for the second quarter of fiscal 2025. Highlights •Second quarter revenues were $3.1 billion •Second quarter net earnings wer

July 31, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ______________________________________________________________ ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34910 HUNT

July 31, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 31, 2025 HUNTINGTON INGALLS I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 31, 2025 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (C

July 29, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 29, 2025 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (C

July 29, 2025 EX-99.1

Nick Stanage Joins HII Board of Directors

Exhibit 99.1 NEWS RELEASE Contacts: Danny Hernandez [email protected] (202) 264-7143 Nick Stanage Joins HII Board of Directors NEWPORT NEWS, Va., (July 29, 2025) — HII (NYSE: HII), announced today that former chairman, CEO and president of Hexcel Corporation Nick Stanage was elected to the company’s board of directors. “We are pleased to welcome Nick to the board of HII,” said Kirk Dona

June 13, 2025 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 1

June 13, 2025 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 1

May 30, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of the registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of the registrant as specified in its charter) Delaware 1-34910 90-0607005 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S. Employer Identification Number) 4101 Washington Avenue Newport News, Virginia 23607 (Ad

May 30, 2025 EX-1.01

lict Minerals Report of Huntington Ingalls Industries, Inc.

Exhibit 1.01 CONFLICT MINERALS REPORT This Conflict Minerals Report (“CMR”) for the reporting period of January 1 to December 31, 2024, is provided in accordance with Rule 13p-1 (the "Rule") under the Securities Exchange Act of 1934, as amended. COMPANY BACKGROUND Huntington Ingalls Industries, Inc. (“HII,” the “Company,” “we,” “us,” or “our”) is a global, all-domain defense partner, building and

May 5, 2025 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 5, 2025 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (Com

May 5, 2025 EX-3.1

Restated Certificate of Incorporation of Huntington Ingalls Industries, Inc.,

Exhibit 3.1 RESTATED CERTIFICATE OF INCORPORATION OF HUNTINGTON INGALLS INDUSTRIES, INC. Huntington Ingalls Industries, Inc. (the “Corporation”), a corporation organized and existing under the General Corporation Law of the State of Delaware (the “DGCL”), does hereby certify as follows: 1.The name of the Corporation is Huntington Ingalls Industries, Inc. The Corporation was originally incorporated

May 5, 2025 EX-3.2

ed April 30, 2025 (incorporated by reference to Exhibit 3.2 to the Company's Current Report on Form 8-K filed on May 5, 2025, File No. 001-34910).

Exhibit 3.2 RESTATED BYLAWS OF HUNTINGTON INGALLS INDUSTRIES, INC. (A Delaware Corporation) ARTICLE I OFFICES Section 1.01 Registered Office. The registered office of Huntington Ingalls Industries, Inc. (the “Corporation”) shall be fixed in the Certificate of Incorporation of the Corporation. Section 1.02 Principal Executive Office. The principal executive office of the Corporation shall be locate

May 1, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ______________________________________________________________ ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34910 HUN

May 1, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 1, 2025 HUNTINGTON INGALLS IND

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 1, 2025 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (Com

May 1, 2025 EX-99.1

HII Reports First Quarter 2025 Results

Exhibit 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Christie Thomas (Investors) [email protected] 757-380-2104 HII Reports First Quarter 2025 Results NEWPORT NEWS, Va. (May 1, 2025) - HII (NYSE: HII) today reported results for the first quarter of fiscal 2025. Highlights •First quarter revenues were $2.7 billion •First quarter net earnings were $149

May 1, 2025 EX-99.2

Q1 2025 Earnings Call Chris Kastner President and CEO Tom Stiehle EVP and CFO May 1, 2025 Q1 2025 EARNINGS Cautionary Statement Regarding Forward-looking Statements Statements in this presentation and in our other filings with the SEC, as well as oth

Q1 2025 Earnings Call Chris Kastner President and CEO Tom Stiehle EVP and CFO May 1, 2025 Q1 2025 EARNINGS Cautionary Statement Regarding Forward-looking Statements Statements in this presentation and in our other filings with the SEC, as well as other statements we may make from time to time, other than statements of historical fact, constitute "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995.

March 31, 2025 POSASR

As filed with the Securities and Exchange Commission on March 31, 2025

As filed with the Securities and Exchange Commission on March 31, 2025 Registration No.

March 21, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

March 21, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

March 3, 2025 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: x Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

February 6, 2025 EX-4.10

Description of Securities

Exhibit 4.10 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE EXCHANGE ACT Description of Common Stock General The Restated Certificate of Incorporation (the “Restated Certificate”) of Huntington Ingalls Industries, Inc. (the “Company,” “us,” “we,” or “our”), as amended, authorizes the issuance of up to 150,000,000 shares of common stock, par value $0.01 per share (“Common Stock”), and

February 6, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 6, 2025 HUNTINGTON INGALL

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 6, 2025 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation)

February 6, 2025 EX-99.1

HII Reports Fourth Quarter and Full Year 2024 Results

Exhibit 99.1 News Release Contacts: Brooke Hart (Media) [email protected] (202) 264-7108 Christie Thomas (Investors) [email protected] (757) 380-2104 HII Reports Fourth Quarter and Full Year 2024 Results •Revenues were $3.0 billion in the fourth quarter, $11.5 billion in 2024 •Diluted earnings per share was $3.15 in the fourth quarter, $13.96 in 2024 •Backlog of $48.7 billion at year

February 6, 2025 EX-19

Insider Trading Policy.

Exhibit 19 CP NO. A11 PAGE 1 of 11 CORPORATE POLICY DATE 08/24/23 Subject: Insider Trading Process Owner Primary Responsibility – President and Chief Executive Officer Functional Responsibility – Corporate Vice President, Associate General Counsel and Secretary Authorization This document is authorized by the President and Chief Executive Officer (“CEO”) for a period of three years. At the end of

February 6, 2025 EX-21.1

List of subsidiaries of Huntington Ingalls Industries, Inc.

Exhibit 21.1 SUBSIDIARIES OF HUNTINGTON INGALLS INDUSTRIES, INC. Name of Subsidiary Jurisdiction of Organization Avondale Engineering & Construction Company Delaware CEMC Enterprise, LLC Delaware Enlighten IT Consulting LLC Maryland Fleet Services Holding Corp. Delaware Gray Research, Inc. Alabama H&B Defence Pty Ltd Australia HII (AUS) Holding Company Pty Ltd Australia HII Energy Inc. Virginia HI

February 6, 2025 EX-22

List of Subsidiary Guarantors (incorporated by reference herein by reference to Exhibit 22 to the Company’s Annual Report on Form 10-K filed on February 6, 2025)

Exhibit 22 List of Subsidiary Guarantors of Registered Securities of Huntington Ingalls Industries, Inc.

February 6, 2025 EX-99.2

Q4 2024 Earnings Call Chris Kastner President and CEO Tom Stiehle EVP and CFO February 6, 2025 Exhibit 99.2 Q4 2024 EARNINGS Cautionary Statement Regarding Forward-looking Statements Statements in this presentation and in our other filings with the S

hiiq42024earningspresent Q4 2024 Earnings Call Chris Kastner President and CEO Tom Stiehle EVP and CFO February 6, 2025 Exhibit 99.

February 6, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SE

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-34910 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact

November 18, 2024 EX-1.1

Underwriting Agreement, dated as of November 13, 2024, among Huntington Ingalls Industries, Inc., the guarantors named therein and J.P. Morgan Securities LLC, BofA Securities, Inc., Mizuho Securities USA LLC, Scotia Capital (USA) Inc., U.S. Bancorp Investments, Inc., and Wells Fargo Securities, LLC, as representatives of the underwriters named therein

Exhibit 1.1 Execution Version $1,000,000,000 Huntington Ingalls Industries, Inc. 5.353% Senior Notes due 2030 5.749% Senior Notes due 2035 Underwriting Agreement November 13, 2024 J.P. Morgan Securities LLC BofA Securities, Inc. Mizuho Securities USA LLC Scotia Capital (USA) Inc. U.S. Bancorp Investments, Inc. Wells Fargo Securities, LLC As Representatives of the several Underwriters listed in Sch

November 18, 2024 EX-4.1

Indenture, dated as November 18, 2024, among Huntington Ingalls Industries, Inc., the guarantors named therein and U.S. Bank Trust Company, National Association, as trustee (incorporated by reference to Exhibit 4.1 to Form 8-K filed November 18, 2024

Exhibit 4.1 Execution Version HUNTINGTON INGALLS INDUSTRIES, INC. THE GUARANTORS LISTED ON SCHEDULE I and U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION INDENTURE Dated as of November 18, 2024 SENIOR DEBT SECURITIES CROSS-REFERENCE TABLE1 Section of Trust Indenture Act of 1939, as amended Section of Indenture 310(a) 6.09 310(b) 6.08 6.10 310(c) Inapplicable 311(a) 6.13 311(b) 6.13 311(c) Inapplicab

November 18, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 18, 2024 HUNTINGTON INGAL

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 18, 2024 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation

November 18, 2024 EX-5.3

Opinion of Ballard Spahr LLP

EX-5.3 Exhibit 5.3 111 S. Calvert Street, 27th Floor Baltimore, MD 21202-6174 TEL 410.528.5600 FAX 410.528.5650 www. ballardspahr.com November 18, 2024 Enlighten IT Consulting LLC c/o Huntington Ingalls Industries, Inc. 4101 Washington Avenue Newport News, Virginia 23607 Re: Enlighten IT Consulting LLC, a Maryland limited liability company (the “Company”) — Issuance by Huntington Ingalls Industrie

November 18, 2024 EX-4.2

First Supplemental Indenture, dated as of November 18, 2024, among Huntington Ingalls Industries, Inc., the guarantors named therein and U.S. Bank Trust Company, National Association, as trustee, relating to 5.353% Senior Notes due 2030 and 5.749% Senior Notes due 2035

Exhibit 4.2 Execution Version 5.353% SENIOR NOTES DUE 2030 5.749% SENIOR NOTES DUE 2035 FIRST SUPPLEMENTAL INDENTURE Dated as of November 18, 2024 among HUNTINGTON INGALLS INDUSTRIES, INC., as the Issuer, THE GUARANTORS PARTY HERETO, and U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, as Trustee TABLE OF CONTENTS PAGE ARTICLE 1 DEFINITIONS AND INCORPORATION BY REFERENCE 1 Section 1.01. Definitions

November 14, 2024 424B5

$1,000,000,000 Huntington Ingalls Industries, Inc. 5.353% Senior Notes due 2030 5.749% Senior Notes due 2035

Table of Contents Filed Pursuant to Rule 424(b)(5) Registration Statement No. 333-281250 PROSPECTUS SUPPLEMENT (To Prospectus dated August 5, 2024) $1,000,000,000 Huntington Ingalls Industries, Inc. 5.353% Senior Notes due 2030 5.749% Senior Notes due 2035 We are offering $500,000,000 aggregate principal amount of our senior notes due 2030 (the “2030 notes”) and $500,000,000 aggregate principal am

November 14, 2024 EX-FILING FEES

Calculation of Filing Fee Tables (Form Type) Huntington Ingalls Industries, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Tables 424(b)(5) (Form Type) Huntington Ingalls Industries, Inc.

November 13, 2024 SC 13G/A

HII / Huntington Ingalls Industries, Inc. / Capital World Investors - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2 )* Huntington Ingalls Industries, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 446413106 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of this Statement) Check the a

November 13, 2024 424B5

Subject to Completion Preliminary Prospectus Supplement dated November 13, 2024

Table of Contents Filed Pursuant to Rule 424(b)(5) Registration Statement No. 333-281250 The information in this preliminary prospectus supplement and accompanying prospectus is not complete and may be changed. This prospectus supplement and the accompanying prospectus are not an offer to sell these securities and are not soliciting an offer to buy these securities in any jurisdiction where the of

November 13, 2024 FWP

PRICING TERM SHEET Huntington Ingalls Industries, Inc. Pricing Term Sheet November 13, 2024 5.353% Senior Notes due 2030 5.749% Senior Notes due 2035

FWP 1 d814149dfwp.htm FWP Issuer Free Writing Prospectus dated November 13, 2024 Filed Pursuant to Rule 433 Registration Statement No. 333-281250 PRICING TERM SHEET Huntington Ingalls Industries, Inc. Pricing Term Sheet November 13, 2024 5.353% Senior Notes due 2030 5.749% Senior Notes due 2035 This pricing term sheet (the “Pricing Term Sheet”) supplements the prospectus supplement issued by Hunti

November 7, 2024 EX-99.1

HII Names Kari Wilkinson to Lead Newport News Shipbuilding Jennifer Boykin to Retire; Brian Blanchette to Lead Ingalls Shipbuilding

Exhibit 99.1 NEWS RELEASE Contacts: Danny Hernandez [email protected] (202) 264-7143 HII Names Kari Wilkinson to Lead Newport News Shipbuilding Jennifer Boykin to Retire; Brian Blanchette to Lead Ingalls Shipbuilding NEWPORT NEWS, Va., (Nov 6, 2024) — HII (NYSE: HII), the nation’s largest military shipbuilder, announced today that its Board of Directors has elected Kari Wilkinson to ser

November 7, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 5, 2024 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation)

October 31, 2024 EX-99.2

HII Q3 2024 Earnings October 31, 2024 Chris Kastner President & CEO Tom Stiehle Executive Vice President & CFO Exhibit 99.2 Cautionary Statement Regarding Forward-looking Statements 2 Statements in this presentation, other than statements of historic

hiiq32024earningspresent HII Q3 2024 Earnings October 31, 2024 Chris Kastner President & CEO Tom Stiehle Executive Vice President & CFO Exhibit 99.

October 31, 2024 EX-99.1

HII Reports Third Quarter 2024 Results and Provides Updated Outlook

Exhibit 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Christie Thomas (Investors) [email protected] 757-380-2104 HII Reports Third Quarter 2024 Results and Provides Updated Outlook NEWPORT NEWS, Va. (October 31, 2024) - HII (NYSE: HII) today reported results for the third quarter of fiscal 2024 and provided an update on its outlook. Highlights •Third

October 31, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ______________________________________________________________ ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34910

October 31, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 31, 2024 HUNTINGTON INGALL

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 31, 2024 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation)

September 17, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 17, 2024 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporatio

September 17, 2024 EX-10.1

Second Amended and Restated Credit Agreement, dated September 17, 2024, among the Company, the lenders party thereto, JPMorgan Chase Bank, N.A., as administrative agent and an issuing bank, and certain other issuing banks.

Exhibit 10.1 Execution Version SECOND AMENDED AND RESTATED CREDIT AGREEMENT dated as of September 17, 2024 among HUNTINGTON INGALLS INDUSTRIES, INC., The Lenders Party Hereto, JPMORGAN CHASE BANK, N.A., as Administrative Agent and Issuing Bank, and JPMORGAN CHASE BANK, N.A., BANK OF AMERICA, N.A., MIZUHO BANK, LTD., PNC BANK, NATIONAL ASSOCIATION, TD BANK, N.A. THE BANK OF NOVA SCOTIA, TRUIST BANK

August 5, 2024 EX-4.1

Form of Senior Indenture (including form of Guarantee)

Exhibit 4.1 HUNTINGTON INGALLS INDUSTRIES, INC. THE GUARANTORS LISTED ON SCHEDULE I and Trustee INDENTURE Dated as of     SENIOR DEBT SECURITIES CROSS-REFERENCE TABLE1 Section of Trust Indenture Act of 1939, as amended Section of Indenture 310(a) 6.09 310(b) 6.08 6.10 310(c) Inapplicable 311(a) 6.13 311(b) 6.13 311(c) Inapplicable 312(a) 4.01 4.04 312(b) 4.04(c) 312(c) 4.04(c) 313(a) 4.03 313(b) 4

August 5, 2024 EX-4.3

Form of Subordinated Indenture (including form of Guarantee)

Exhibit 4.3 HUNTINGTON INGALLS INDUSTRIES, INC. THE GUARANTORS LISTED ON SCHEDULE I and Trustee INDENTURE Dated as of      SUBORDINATED DEBT SECURITIES CROSS-REFERENCE TABLE 1 Section of Trust Indenture Act of 1939, as amended Section of Indenture 310(a) 6.09 310(b) 6.08 6.10 310(c) Inapplicable 311(a) 6.13 311(b) 6.13 311(c) Inapplicable 312(a) 4.01 4.04 312(b) 4.04(c) 312(c) 4.04(c) 313(a) 4.03

August 5, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Huntington Ingalls Industries, Inc.

August 5, 2024 EX-5.3

Consent of Ballard Spahr LLP (included in Exhibit 5.3)

EX-5.3 Exhibit 5.3 111 S. Calvert Street 27th Floor Baltimore, MD 21202-6174 Tel 410.528.5600 Fax 410.528.5650 www.ballardspahr.com August 5, 2024 Enlighten IT Consulting LLC c/o Huntington Ingalls Industries, Inc. 4101 Washington Avenue Newport News, Virginia 23607    Re: Enlighten IT Consulting LLC, a Maryland limited liability company (the “Company”) – Registration Statement on Form S-3 pertain

August 5, 2024 EX-3.44

Amended and Restated Bylaws of HII Mission Technologies Corp. (f/k/a Alion Science & Technology Corporation), dated January 1, 2023

Exhibit 3.44 AMENDED AND RESTATED BYLAWS of HII MISSION TECHNOLOGIES CORP. a Delaware corporation (hereinafter referred to as the “Company”) ARTICLE I - OFFICES Section 1.1 Location. The address of the registered office of the Company in the State of Delaware and the name of the registered agent at such address shall be as specified in the Certificate of Incorporation or, if subsequently changed,

August 5, 2024 S-3ASR

As filed with the Securities and Exchange Commission on August 5, 2024

As filed with the Securities and Exchange Commission on August 5, 2024 Registration No.

August 5, 2024 EX-3.45

Sixth Amended and Restated Certificate of Incorporation of HII Mission Technologies Corporation (f/k/a Alion Science & Technology Corporation), dated December 21, 2022, as amended

Exhibit 3.45 SIXTH AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF ALION SCIENCE AND TECHNOLOGY CORPORATION FIRST. The name of the corporation is: Alion Science and Technology Corporation (the “Corporation”). The name under which the Corporation was formed was “Beagle Holdings, Inc.” The original Certificate of Incorporation of the Corporation was filed with the Secretary of State of the Stat

August 5, 2024 EX-3.43

Amended and Restated Limited Liability Company Agreement of Enlighten IT Consulting LLC, dated June 29, 2023

Exhibit 3.43 Enlighten IT Consulting LLC a Maryland Limited Liability Company AMENDED AND RESTATED LIMITED LIABILITY COMPANY AGREEMENT Dated as of June 29, 2023 THE MEMBERSHIP INTERESTS REPRESENTED BY THIS AMENDED AND RESTATED LIMITED LIABILITY COMPANY AGREEMENT HAVE NOT BEEN REGISTERED UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED, OR UNDER ANY OTHER APPLICABLE SECURITIES LAWS. SUCH

August 1, 2024 EX-99.2

HII Q2 2024 Earnings August 1, 2024 Chris Kastner President & CEO Tom Stiehle Executive Vice President & CFO Exhibit 99.2 Cautionary Statement Regarding Forward-looking Statements 2 Statements in this presentation, other than statements of historical

HII Q2 2024 Earnings August 1, 2024 Chris Kastner President & CEO Tom Stiehle Executive Vice President & CFO Exhibit 99.

August 1, 2024 EX-99.1

HII Reports Second Quarter 2024 Results

Exhibit 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Christie Thomas (Investors) [email protected] 757-380-2104 HII Reports Second Quarter 2024 Results •Record second quarter revenues of $3.0 billion, up 6.8% compared to second quarter 2023 •Operating income of $189 million, up 21.2% compared to second quarter 2023 •Net earnings of $173 million or $4

August 1, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 1, 2024 HUNTINGTON INGALLS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 1, 2024 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (

August 1, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ______________________________________________________________ ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34910 HUNT

July 31, 2024 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 1, 2024 HUNTINGTON INGALLS I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 1, 2024 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (C

June 11, 2024 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 1

June 11, 2024 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 1

May 31, 2024 EX-1.01

CONFLICT MINERALS REPORT

Exhibit 1.01 CONFLICT MINERALS REPORT This Conflict Minerals Report (“CMR”) for the reporting period of January 1 to December 31, 2023, is provided in accordance with Rule 13p-1 under the Securities Exchange Act of 1934 (the “Rule”). COMPANY BACKGROUND Huntington Ingalls Industries, Inc. (“HII,” the “Company,” “we,” “us,” or “our”) is a global, all-domain defense partner, building and delivering t

May 31, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of the registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of the registrant as specified in its charter) DELAWARE 1-34910 (State or other jurisdiction of incorporation) (Commission File Number) 4101 WASHINGTON AVENUE, NEWPORT NEWS, VIRGINIA 23607 (Address of principal executive offices) (Zip code) T

May 6, 2024 EX-99.4

Third Amendment to the July 1, 2021 Restatement of the Huntington Ingalls Industries Savings Plan

Exhibit 99.4 THIRD AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES SAVINGS PLAN This amendment to the July 1, 2021 restatement of the Huntington Ingalls Industries Savings Plan (“Plan”) incorporates changes to reflect (i) the reorganization of the Company’s Mission Technologies division, and (ii) participating employers as of January 1, 2023. Effective January 1, 2023, the Plan is hereby amended as

May 6, 2024 EX-99.12

Sixth Amendment to the October 1, 2015 Restatement of the Huntington Ingalls Industries Financial Security and Savings Program

Exhibit 99.12 SIXTH AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES FINANCIAL SECURITY AND SAVINGS PROGRAM This amendment to the October 1, 2015 restatement of the Huntington Ingalls Industries Financial Security and Savings Program (the “Plan”) is intended to (A) retroactively amend the Plan as of the Spin-Off date to conform to administrative practice as permitted under Revenue Procedure 2021-30

May 6, 2024 EX-99.11

Fifth Amendment to the October 1, 2015 Restatement of the Huntington Ingalls Industries Financial Security and Savings Program

Exhibit 99.11 FIFTH AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES FINANCIAL SECURITY AND SAVINGS PROGRAM This amendment to the October 1, 2015 restatement of the Huntington Ingalls Industries Financial Security and Savings Program (the “Plan”) is intended to clarify certain changes to the definition of Compensation for a defined period and to make any related changes as necessary. I. Effective as

May 6, 2024 S-8

As filed with the Securities and Exchange Commission on May 6, 2024

As filed with the Securities and Exchange Commission on May 6, 2024 Registration No.

May 6, 2024 EX-99.9

Third Amendment to the October 1, 2015 Restatement of the Huntington Ingalls Industries Financial Security and Savings Program

Exhibit 99.9 THIRD AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES, INC. FINANCIAL SECURITY AND SAVINGS PROGRAM This amendment to the October 1, 2015 restatement of the Huntington Ingalls Industries, Inc. Financial Security and Savings Program (the “Plan”) is intended to update certain hardship withdrawal procedures, as required by law, and to make certain other clarifying changes. The Plan is amen

May 6, 2024 EX-99.10

Fourth Amendment to the October 1, 2015 Restatement of the Huntington Ingalls Industries Financial Security and Savings Program

Exhibit 99.10 FOURTH AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES FINANCIAL SECURITY AND SAVINGS PROGRAM This amendment to the October 1, 2015 restatement of the Huntington Ingalls Industries Financial Security and Savings Program (the “Plan”) is intended to make certain clarifying changes. The Plan is amended as follows: I.  Effective as of January 1, 2020, the first sentence of Section 8.03 of

May 6, 2024 EX-99.5

Fourth Amendment to the July 1, 2021 Restatement of the Huntington Ingalls Industries Savings Plan

Exhibit 99.5 FOURTH AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES SAVINGS PLAN This amendment to the July 1, 2021 restatement of the Huntington Ingalls Industries Savings Plan (“Plan”) incorporates changes to reflect (i) benefit changes in light of the reorganization of the Company’s Mission Technologies division, and (ii) participating employers as of July 1, 2023. Effective July 1, 2023, the Pl

May 6, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Huntington Ingalls Industries, Inc.

May 2, 2024 EX-99.2

HII Q1 2024 Earnings Chris Kastner HII President & CEO Tom Stiehle HII Executive Vice President & CFO May 2, 2024 Exhibit 99.2 Cautionary Statement Regarding Forward-looking Statements 2 Statements in this presentation and in our other filings with t

HII Q1 2024 Earnings Chris Kastner HII President & CEO Tom Stiehle HII Executive Vice President & CFO May 2, 2024 Exhibit 99.

May 2, 2024 EX-99.1

HII Reports First Quarter 2024 Results

Exhibit 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Christie Thomas (Investors) [email protected] 757-380-2104 HII Reports First Quarter 2024 Results •Record first quarter revenues of $2.8 billion, up 4.9% compared to first quarter 2023 •Operating income of $154 million, up 9.2% compared to first quarter 2023 •Net earnings of $153 million or $3.87 d

May 2, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ______________________________________________________________ ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34910 HUN

May 2, 2024 8-K

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 1, 2024 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (Com

May 2, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 2, 2024 HUNTINGTON INGALLS IND

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 2, 2024 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (Com

March 21, 2024 PX14A6G

Vote “Yes” on Shareholder Proposal No. 5

Huntington Ingalls Industries (HII) Shareholder Alert Voluntary submission by John Chevedden, POB 2673, Redondo Beach, CA 90278 Huntington Ingalls shareholder since 2013.

March 19, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒       Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐  Confidential, for Use of the Commission Only (as permitted by Rule 1

March 19, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant  ☒        Filed by a Party other than the Registrant  ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐   Confidential, for Use of the Commission Only (

February 13, 2024 SC 13G/A

HII / Huntington Ingalls Industries, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01149-huntingtoningallsind.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 12)* Name of issuer: Huntington Ingalls Industries Inc Title of Class of Securities: Common Stock CUSIP Number: 446413106 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropr

February 9, 2024 SC 13G/A

HII / Huntington Ingalls Industries, Inc. / Capital World Investors - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1 )* Huntington Ingalls Industries, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 446413106 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant

February 1, 2024 EX-21.1

List of subsidiaries of Huntington Ingalls Industries, Inc.

Exhibit 21.1 SUBSIDIARIES OF HUNTINGTON INGALLS INDUSTRIES, INC. Name of Subsidiary Jurisdiction of Organization Ownership Percentage Avondale Engineering & Construction Company Delaware 100% CEMC Enterprise, LLC Delaware 100% Commonwealth Technology Innovation LLC Virginia 100% Enlighten IT Consulting LLC Maryland 100% Fleet Services Holding Corp. Delaware 100% Gray Research, Inc. Alabama 100% H&

February 1, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-34910 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registran

February 1, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 1, 2024 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation)

February 1, 2024 EX-99.1

HII Reports Fourth Quarter and Full Year 2023 Results

Exhibit 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Christie Thomas (Investors) [email protected] 757-380-2104 HII Reports Fourth Quarter and Full Year 2023 Results •Fourth quarter revenues grew 13% year over year, to a record $3.2 billion •Record 2023 revenues of $11.5 billion, grew 7.3% year over year •Diluted earnings per share was $6.90 for the

February 1, 2024 EX-97

Huntington Ingalls Industries, Inc. Compensation Recovery Policy.

EXHIBIT 97 Huntington Ingalls Industries, Inc. Dodd-Frank Compensation Recovery Policy This Compensation Recovery Policy (this “Policy”) is adopted by Huntington Ingalls Industries, Inc. (the “Company”) in accordance with Section 303A.14 of the New York Stock Exchange (“NYSE”) Listed Company Manual (“Section 303A.14”), which implements Rule 10D-1 under the Securities Exchange Act of 1934, as amend

February 1, 2024 EX-99.2

HII Q4 2023 Earnings February 1, 2024 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Exhibit 99.2 Cautionary Statement Regarding Forward-looking Statements 2 Statements in this pre

HII Q4 2023 Earnings February 1, 2024 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Exhibit 99.

February 1, 2024 EX-4.10

Exhibit 4.10

Exhibit 4.10 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE EXCHANGE ACT Description of Common Stock General The Restated Certificate of Incorporation (the “Restated Certificate”) of Huntington Ingalls Industries, Inc. (the “Company,” “us,” “we,” or “our”), as amended, authorizes the issuance of up to 150,000,000 shares of common stock, par value $0.01 per share (“Common Stock”), and

February 1, 2024 EX-10.36

Terms and Conditions Applicable to Restricted Performance Stock Rights Granted Under the 2022 Long-Term Incentive Stock Plan, as amended

EXHIBIT 10.36 HUNTINGTON INGALLS INDUSTRIES, INC. TERMS AND CONDITIONS APPLICABLE TO 20 RESTRICTED PERFORMANCE STOCK RIGHTS GRANTED UNDER THE 2022 LONG-TERM INCENTIVE STOCK PLAN (“PLAN”) These Terms and Conditions (“Terms”) apply to certain “Restricted Performance Stock Rights” (“RPSRs”) granted by Huntington Ingalls Industries, Inc. (the “Company”) in 20. If you were granted an RPSR award by the

February 1, 2024 EX-10.41

Huntington Ingalls Industries, Inc. Amended and Restated Directors' Compensation Policy

EXHIBIT 10.41 HUNTINGTON INGALLS INDUSTRIES, INC. AMENDED AND RESTATED DIRECTORS' COMPENSATION POLICY Directors of Huntington Ingalls Industries, Inc., a Delaware corporation (the "Company"), who are not employed by the Company or one of its subsidiaries (''non-employee directors") are entitled to the compensation set forth below for their service as a member of the Board of Directors (the "Board"

February 1, 2024 EX-22

List of Subsidiary Guarantors (incorporated by reference herein by reference to Exhibit 22 to the Company’s Annual Report on Form 10-K filed on February 1, 2024)

Exhibit 22 List of Subsidiary Guarantors of Registered Securities of Huntington Ingalls Industries, Inc.

February 1, 2024 EX-10.38

Terms and Conditions Applicable to Cliff Vesting Restricted Stock Rights Granted Under the 2022 Long-Term Incentive Stock Plan

EXHIBIT 10.38 HUNTINGTON INGALLS INDUSTRIES, INC. TERMS AND CONDITIONS APPLICABLE TO 20 CLIFF VESTING RESTRICTED STOCK RIGHTS GRANTED UNDER THE 2022 LONG-TERM INCENTIVE STOCK PLAN (“PLAN”) These Terms and Conditions (“Terms”) apply to certain “Restricted Stock Rights” (“RSRs”) granted by Huntington Ingalls Industries, Inc. (the “Company”) in 20. If you were granted an RSR award by the Company in 2

February 1, 2024 EX-10.37

Terms and Conditions Applicable to Ratable Vesting Restricted Stock Rights Granted Under the 2022 Long-Term Incentive Stock Plan.

EXHIBIT 10.37 HUNTINGTON INGALLS INDUSTRIES, INC. TERMS AND CONDITIONS APPLICABLE TO 20 RATABLE VESTING RESTRICTED STOCK RIGHTS GRANTED UNDER THE 2022 LONG-TERM INCENTIVE STOCK PLAN (“PLAN”) These Terms and Conditions (“Terms”) apply to certain “Restricted Stock Rights” (“RSRs”) granted by Huntington Ingalls Industries, Inc. (the “Company”) in 20. If you were granted an RSR award by the Company in

December 19, 2023 8-K

Amendment to Registrant's Code of Ethics, or Waiver of a Provision of the Code of Ethics, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 15, 2023 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) DELAWARE 1-34910 90-0607005 (State or other jurisdiction of incorporation)

November 2, 2023 EX-99.1

HII Reports Third Quarter 2023 Results

Exhibit 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Christie Thomas (Investors) [email protected] 757-380-2104 HII Reports Third Quarter 2023 Results •Record third quarter revenues of $2.8 billion, up 7.2% compared to third quarter 2022 •Net earnings of $148 million or $3.70 diluted earnings per share •Third quarter free cash flow1 of $293 million •

November 2, 2023 EX-10.2

Terms and Conditions Applicable to Non-Employee Director Stock Units Granted Under the 2022 Long-Term Incentive Stock Plan.

Exhibit 10.2 HUNTINGTON INGALLS INDUSTRIES, INC. TERMS AND CONDITIONS APPLICABLE TO NON-EMPLOYEE DIRECTOR STOCK UNITS GRANTED UNDER THE 2022 LONG-TERM INCENTIVE STOCK PLAN (“Plan”) These Terms and Conditions (“Terms”) apply to stock units (“Stock Units”) granted by Huntington Ingalls Industries, Inc. (the “Company”) to its directors who are not employed by the Company or one of its subsidiaries. T

November 2, 2023 EX-99.2

HII Q3 2023 Earnings November 2, 2023 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Exhibit 99.2 Cautionary Statement Regarding Forward-looking Statements 2 Statements in this pre

hiiq32023earningspresent HII Q3 2023 Earnings November 2, 2023 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Exhibit 99.

November 2, 2023 EX-10.1

Terms and Conditions Applicable to Non-Employee Director Stock Grants Under the 2022 Long-Term Incentive Stock Plan, as amended.

Exhibit 10.1 HUNTINGTON INGALLS INDUSTRIES, INC. TERMS AND CONDITIONS APPLICABLE TO NON-EMPLOYEE DIRECTOR STOCK GRANT UNDER THE 2022 LONG-TERM INCENTIVE STOCK PLAN (“Plan”) These Terms and Conditions (“Terms”) apply to Shares of the Company’s common stock granted by Huntington Ingalls Industries, Inc. (the “Company”) to its directors who are not employed by the Company or one of its subsidiaries.

November 2, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ______________________________________________________________ ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34910

November 2, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 2, 2023 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation)

October 5, 2023 EX-99.1

HII Elects Craig Faller to Board of Directors

Exhibit 99.1 NEWS RELEASE Contact: Danny Hernandez 202-264-7143 [email protected] HII Elects Craig Faller to Board of Directors NEWPORT NEWS, Va., (Oct. 5, 2023) — HII (NYSE: HII) announced today that Adm. Craig S. Faller (U.S. Navy, Ret.) was elected to the company’s board of directors, effective Oct. 3, 2023. Faller retired from the Navy in 2021 following 38 years of service. Serving

October 5, 2023 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 2, 2023 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) DELAWARE 1-34910 90-0607005 (State or other jurisdiction of incorporation) (C

August 3, 2023 EX-99.1

HII Reports Second Quarter 2023 Results

Exhibit 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Christie Thomas (Investors) [email protected] 757-380-2104 HII Reports Second Quarter 2023 Results •Record second quarter revenues of $2.8 billion, up 4.7% compared to second quarter 2022 •Net earnings of $130 million or $3.27 diluted earnings per share •Company reaffirms shipbuilding and Mission T

August 3, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 3, 2023 HUNTINGTON INGALLS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 3, 2023 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (

August 3, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ______________________________________________________________ ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34910 HUNT

August 3, 2023 EX-99.2

HII Q2 2023 Earnings August 3, 2023 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Exhibit 99.2 Cautionary Statement Regarding Forward-looking Statements 2 Statements in this prese

HII Q2 2023 Earnings August 3, 2023 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Exhibit 99.

June 16, 2023 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 1

June 16, 2023 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 1

May 31, 2023 EX-1.01

CONFLICT MINERALS REPORT

EX-1.01 Exhibit 1.01 CONFLICT MINERALS REPORT This Conflict Minerals Report (“CMR”) for the reporting period of January 1 to December 31, 2022, is provided in accordance with Rule 13p-1 under the Securities Exchange Act of 1934 (the “Rule”). COMPANY BACKGROUND Huntington Ingalls Industries, Inc. (“HII”, the “Company”, “we”, “us”, or “our”) is a global, all-domain defense partner, building and deli

May 31, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of the registrant as specified in its charter) DELAWARE 1-34910 (State or other jurisdiction

SD OMB APPROVAL OMB Number: 3235-0697 Expires: July 31, 2024 Estimated average burden hours per response 477.

May 5, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 2, 2023 HUNTINGTON INGALLS IND

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 2, 2023 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (Com

May 4, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ______________________________________________________________ ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34910 HUN

May 4, 2023 EX-99.1

HII Reports First Quarter 2023 Results

Exhibit 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Christie Thomas (Investors) [email protected] 757-380-2104 HII Reports First Quarter 2023 Results •Record first quarter revenues of $2.7 billion, up 3.8% compared to first quarter 2022 •Net earnings of $129 million or $3.23 diluted earnings per share •Awarded $1.3 billion contract for amphibious tr

May 4, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 4, 2023 HUNTINGTON INGALLS IND

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 4, 2023 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (Com

May 4, 2023 EX-99.2

HII Q1 2023 Earnings May 4, 2023 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Exhibit 99.2 Cautionary Statement Regarding Forward-looking Statements 2 Statements in this presenta

hiiq12023earningspresent HII Q1 2023 Earnings May 4, 2023 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Exhibit 99.

April 28, 2023 EX-10.1

Amended and Restated Revolving Credit Agreement, dated as of April 24, 2023, among Huntington Ingalls Industries, Inc., the lenders party thereto and JPMorgan Chase Bank, N.A., as Administrative Agent and an Issuing Bank (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on April 28, 2023).

EX-10.1 Exhibit 10.1 Execution Version AMENDMENT NO. 1 THIS AMENDMENT NO. 1 (this “Amendment”), dated as of April 24, 2023, is entered into among HUNTINGTON INGALLS INDUSTRIES, INC., a Delaware corporation (the “Borrower”), JPMORGAN CHASE BANK, N.A., as administrative agent (in such capacity, the “Administrative Agent”) and the lenders party to the Credit Agreement (as defined below) (the “Lenders

April 28, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 24, 2023 HUNTINGTON INGALLS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 24, 2023 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (

April 28, 2023 EX-10.2

Amended and Restated Credit Agreement, dated as of April 24, 2023, among Huntington Ingalls Industries, Inc., the lenders party thereto and JPMorgan Chase Bank, N.A., as Administrative Agent (incorporated by reference to Exhibit 10.2 to the Company's Current Report on Form 8-K filed on April 28, 2023).

EX-10.2 Exhibit 10.2 Execution Version AMENDMENT NO. 1 THIS AMENDMENT NO. 1 (this “Amendment”), dated as of April 24, 2023, is entered into among HUNTINGTON INGALLS INDUSTRIES, INC., a Delaware corporation (the “Borrower”), JPMORGAN CHASE BANK, N.A., as administrative agent (in such capacity, the “Administrative Agent”) and the lenders party to the Credit Agreement (as defined below) (the “Lenders

March 20, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitte

March 20, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule

February 13, 2023 SC 13G

HII / Huntington Ingalls Industries Inc / Capital World Investors - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Huntington Ingalls Industries, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 446413106 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

February 9, 2023 SC 13G/A

HII / Huntington Ingalls Industries Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01113-huntingtoningallsind.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: Huntington Ingalls Industries Inc. Title of Class of Securities: Common Stock CUSIP Number: 446413106 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the approp

February 9, 2023 EX-99.1

HII Reports Fourth Quarter and Full Year 2022 Results

Exhibit 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Christie Thomas (Investors) [email protected] 757-380-2104 HII Reports Fourth Quarter and Full Year 2022 Results •Revenues were $2.8 billion in the fourth quarter, $10.7 billion in 2022 •Diluted earnings per share was $3.07 in the fourth quarter, $14.44 in 2022 •Cash from operations was $766 millio

February 9, 2023 EX-10.41

Huntington Ingalls Industries, Inc. Amended and Restated Directors' Compensation Policy.

EXHIBIT 10.41 HUNTINGTON INGALLS INDUSTRIES, INC. AMENDED AND RESTATED DIRECTORS' COMPENSATION POLICY Directors of Huntington Ingalls Industries, Inc., a Delaware corporation (the "Company"), who are not employed by the Company or one of its subsidiaries (''non-employee directors") are entitled to the compensation set forth below for their service as a member of the Board of Directors (the "Board"

February 9, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 9, 2023 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation)

February 9, 2023 EX-21.1

List of subsidiaries of Huntington Ingalls Industries, Inc.

Exhibit 21.1 SUBSIDIARIES OF HUNTINGTON INGALLS INDUSTRIES, INC. Name of Subsidiary Jurisdiction of Organization Ownership Percentage Avondale Engineering & Construction Company Delaware 100% CEMC Enterprise, LLC Delaware 100% Commonwealth Technology Innovation LLC Virginia 100% Enlighten IT Consulting LLC Maryland 100% Fleet Services Holding Corp. Delaware 100% Gray Research, Inc. Alabama 100% HI

February 9, 2023 EX-99.2

HII Q4 2022 Earnings February 9, 2023 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Exhibit 99.2 Cautionary Statement Regarding Forward-looking Statements 2 Statements in this pre

HII Q4 2022 Earnings February 9, 2023 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Exhibit 99.

February 9, 2023 EX-4.10

Description of Securities

Exhibit 4.10 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE EXCHANGE ACT Description of Common Stock General The Restated Certificate of Incorporation (the “Restated Certificate”) of Huntington Ingalls Industries, Inc. (the “Company,” “us,” “we,” or “our”), as amended, authorizes the issuance of up to 150,000,000 shares of common stock, par value $0.01 per share (“Common Stock”), and

February 9, 2023 EX-22

List of subsidiary guarantors of registered securities of Huntington Ingalls Industries, Inc.

Exhibit 22 List of Subsidiary Guarantors of Registered Securities of Huntington Ingalls Industries, Inc.

February 9, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-34910 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registran

February 9, 2023 EX-10.42

Huntington Ingalls Industries, Inc. Directors Compensation Policy--Amended and Restated Board Deferred Compensation Policy.

EXHIBIT 10.42 HUNTINGTON INGALLS INDUSTRIES, INC. DIRECTOR COMPENSATION POLICY AMENDED AND RESTATED BOARD DEFERRED COMPENSATION POLICY Stock Retainer Elections by Directors. A Director who has met his or her Ownership Guideline under the Directors’ Compensation Policy may elect (the “Stock Retainer Election”) by the date that the Administrator prescribes (the “Election Deadline”) to receive one hu

December 20, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 16, 2022 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation

December 9, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 5, 2022 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) DELAWARE 1-34910 90-0607005 (State or other jurisdiction of incorporation) (

December 9, 2022 EX-99.1

HII ELECTS LEO DENAULT TO BOARD OF DIRECTORS

Exhibit 99.1 Contact: Danny Hernandez (202) 580-9086 [email protected] HII ELECTS LEO DENAULT TO BOARD OF DIRECTORS NEWPORT NEWS, Va., (Dec. 9, 2022) ? HII (NYSE:HII) announced today that current executive chairman and former chief executive officer of Entergy Corporation Leo Denault was elected to the company?s board of directors, effective December 5, 2022. Denault has 40-years of exp

November 9, 2022 EX-99.10

Sixth Amendment to the October 1, 2015 Restatement of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees.

Exhibit 99.10 SIXTH AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES, INC. NEWPORT NEWS OPERATIONS SAVINGS (401(k)) PLAN FOR UNION ELIGIBLE EMPLOYEES This amendment to the October 1, 2015 restatement of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees, including the Huntington Ingalls Industries, Inc. Newport News Operations Employee

November 9, 2022 EX-99.9

Fifth Amendment to the October 1, 2015 Restatement of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees.

Exhibit 99.9 FIFTH AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES, INC. NEWPORT NEWS OPERATIONS SAVINGS (401(k)) PLAN FOR UNION ELIGIBLE EMPLOYEES This amendment to the October 1, 2015 restatement of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees (the ?Plan?) is intended to update certain hardship withdrawal procedures, as require

November 9, 2022 EX-99.3

Second Amendment to the July 1, 2021 Restatement of the Huntington Ingalls Industries Savings Plan.

Exhibit 99.3 SECOND AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES SAVINGS PLAN This amendment to the July 1, 2021 restatement of the Huntington Ingalls Industries Savings Plan (?Plan?) incorporates changes to (i) add an after-tax match feature for eligible employees of HII?s Mission Technologies division (formerly known as Technical Solutions division), (ii) provide a new match and non-discretion

November 9, 2022 EX-99.2

First Amendment to the July 1, 2021 Restatement of the Huntington Ingalls Industries Savings Plan.

Exhibit 99.2 FIRST AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES SAVINGS PLAN This amendment to the July 1, 2021 restatement of the Huntington Ingalls Industries Savings Plan (?Plan?) incorporates changes to reflect (i) the merger of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees, including the Huntington Ingalls Industries, Inc.

November 9, 2022 EX-99.1

Huntington Ingalls Industries Savings Plan, as amended and restated effective July 1, 2021.

Exhibit 99.1 HUNTINGTON INGALLS INDUSTRIES SAVINGS PLAN Amendment and Restatement Effective as of July 1, 2021 TABLE OF CONTENTS Page ARTICLE 1 INTRODUCTION 1 Section 1.01 Introduction 1 Section 1.02 Spin-Off 1 Section 1.03 Transfer of Assets and Liabilities, Service Credit 2 Section 1.04 Plan Mergers 2 ARTICLE 2 DEFINITIONS 6 Section 2.01 Account 6 Section 2.02 Active Participant 6 Section 2.03 A

November 9, 2022 EX-99.3

Second Amendment to the July 1, 2021 Restatement of the Huntington Ingalls Industries Savings Plan.

Exhibit 99.3 SECOND AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES SAVINGS PLAN This amendment to the July 1, 2021 restatement of the Huntington Ingalls Industries Savings Plan (?Plan?) incorporates changes to (i) add an after-tax match feature for eligible employees of HII?s Mission Technologies division (formerly known as Technical Solutions division), (ii) provide a new match and non-discretion

November 9, 2022 S-8 POS

As filed with the Securities and Exchange Commission on November 9, 2022

As filed with the Securities and Exchange Commission on November 9, 2022 Registration No.

November 9, 2022 EX-99.3

Second Amendment to the July 1, 2021 Restatement of the Huntington Ingalls Industries Savings Plan.

Exhibit 99.3 SECOND AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES SAVINGS PLAN This amendment to the July 1, 2021 restatement of the Huntington Ingalls Industries Savings Plan (?Plan?) incorporates changes to (i) add an after-tax match feature for eligible employees of HII?s Mission Technologies division (formerly known as Technical Solutions division), (ii) provide a new match and non-discretion

November 9, 2022 EX-99.2

First Amendment to the July 1, 2021 Restatement of the Huntington Ingalls Industries Savings Plan.

Exhibit 99.2 FIRST AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES SAVINGS PLAN This amendment to the July 1, 2021 restatement of the Huntington Ingalls Industries Savings Plan (?Plan?) incorporates changes to reflect (i) the merger of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees, including the Huntington Ingalls Industries, Inc.

November 9, 2022 EX-99.10

Sixth Amendment to the October 1, 2015 Restatement of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees.

Exhibit 99.10 SIXTH AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES, INC. NEWPORT NEWS OPERATIONS SAVINGS (401(k)) PLAN FOR UNION ELIGIBLE EMPLOYEES This amendment to the October 1, 2015 restatement of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees, including the Huntington Ingalls Industries, Inc. Newport News Operations Employee

November 9, 2022 S-8 POS

As filed with the Securities and Exchange Commission on November 9, 2022

As filed with the Securities and Exchange Commission on November 9, 2022 Registration No.

November 9, 2022 S-8 POS

As filed with the Securities and Exchange Commission on November 9, 2022

As filed with the Securities and Exchange Commission on November 9, 2022 Registration No.

November 9, 2022 EX-99.1

Huntington Ingalls Industries Savings Plan, as amended and restated effective July 1, 2021.

Exhibit 99.1 HUNTINGTON INGALLS INDUSTRIES SAVINGS PLAN Amendment and Restatement Effective as of July 1, 2021 TABLE OF CONTENTS Page ARTICLE 1 INTRODUCTION 1 Section 1.01 Introduction 1 Section 1.02 Spin-Off 1 Section 1.03 Transfer of Assets and Liabilities, Service Credit 2 Section 1.04 Plan Mergers 2 ARTICLE 2 DEFINITIONS 6 Section 2.01 Account 6 Section 2.02 Active Participant 6 Section 2.03 A

November 9, 2022 EX-99.9

Fifth Amendment to the October 1, 2015 Restatement of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees.

Exhibit 99.9 FIFTH AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES, INC. NEWPORT NEWS OPERATIONS SAVINGS (401(k)) PLAN FOR UNION ELIGIBLE EMPLOYEES This amendment to the October 1, 2015 restatement of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees (the ?Plan?) is intended to update certain hardship withdrawal procedures, as require

November 9, 2022 EX-99.1

Huntington Ingalls Industries Savings Plan, as amended and restated effective July 1, 2021.

Exhibit 99.1 HUNTINGTON INGALLS INDUSTRIES SAVINGS PLAN Amendment and Restatement Effective as of July 1, 2021 TABLE OF CONTENTS Page ARTICLE 1 INTRODUCTION 1 Section 1.01 Introduction 1 Section 1.02 Spin-Off 1 Section 1.03 Transfer of Assets and Liabilities, Service Credit 2 Section 1.04 Plan Mergers 2 ARTICLE 2 DEFINITIONS 6 Section 2.01 Account 6 Section 2.02 Active Participant 6 Section 2.03 A

November 9, 2022 EX-99.9

Fifth Amendment to the October 1, 2015 Restatement of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees.

Exhibit 99.9 FIFTH AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES, INC. NEWPORT NEWS OPERATIONS SAVINGS (401(k)) PLAN FOR UNION ELIGIBLE EMPLOYEES This amendment to the October 1, 2015 restatement of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees (the ?Plan?) is intended to update certain hardship withdrawal procedures, as require

November 9, 2022 EX-99.10

Sixth Amendment to the October 1, 2015 Restatement of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees.

Exhibit 99.10 SIXTH AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES, INC. NEWPORT NEWS OPERATIONS SAVINGS (401(k)) PLAN FOR UNION ELIGIBLE EMPLOYEES This amendment to the October 1, 2015 restatement of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees, including the Huntington Ingalls Industries, Inc. Newport News Operations Employee

November 9, 2022 EX-99.2

First Amendment to the July 1, 2021 Restatement of the Huntington Ingalls Industries Savings Plan.

EX-99.2 5 d677777dex992.htm EX-99.2 Exhibit 99.2 FIRST AMENDMENT TO THE HUNTINGTON INGALLS INDUSTRIES SAVINGS PLAN This amendment to the July 1, 2021 restatement of the Huntington Ingalls Industries Savings Plan (“Plan”) incorporates changes to reflect (i) the merger of the Huntington Ingalls Industries, Inc. Newport News Operations Savings (401(k)) Plan for Union Eligible Employees, including the

November 8, 2022 EX-3.1

Restated Bylaws of Huntington Ingalls Industries, Inc. (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed on November 8, 2022).

Exhibit 3.1 RESTATED BYLAWS OF HUNTINGTON INGALLS INDUSTRIES, INC. (A Delaware Corporation) ARTICLE I OFFICES Section 1.01 Registered Office. The registered office of Huntington Ingalls Industries, Inc. (the ?Corporation?) shall be fixed in the Certificate of Incorporation of the Corporation. Section 1.02 Principal Executive Office. The principal executive office of the Corporation shall be locate

November 8, 2022 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Material Modification to Rights of Security Holders, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 2, 2022 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) DELAWARE 1-34910 90-0607005 (State or other jurisdiction of incorporation) (

November 3, 2022 EX-99.2

HII Q3 2022 Earnings November 3, 2022 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Cautionary Statement Regarding Forward-looking Statements 2 Statements in this presentation, ot

HII Q3 2022 Earnings November 3, 2022 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Cautionary Statement Regarding Forward-looking Statements 2 Statements in this presentation, other than statements of historical fact, constitute "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995.

November 3, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ______________________________________________________________ ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34910

November 3, 2022 EX-99.1

HII Reports Third Quarter 2022 Results

Exhibit 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Christie Thomas (Investors) [email protected] 757-380-2104 HII Reports Third Quarter 2022 Results ?Revenues were $2.6 billion in the quarter ?Net earnings of $138 million or $3.44 diluted earnings per share ?Narrows FY22 revenue guidance ranges ?Reaffirms shipbuilding operating margin1 guidance, re

November 3, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 3, 2022 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation)

August 4, 2022 EX-99.2

HII Q2 2022 Earnings August 4, 2022 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Exhibit 99.2 Cautionary Statement Regarding Forward-looking Statements Statements in this present

HII Q2 2022 Earnings August 4, 2022 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Exhibit 99.

August 4, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ______________________________________________________________ ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34910 HUNT

August 4, 2022 EX-10.5

Terms and Conditions Applicable to Restricted Stock Rights (3-year vesting) Granted Under the 2022 Long-Term Incentive Stock Plan.

Exhibit 10.5 HUNTINGTON INGALLS INDUSTRIES, INC. TERMS AND CONDITIONS APPLICABLE TO 20 RESTRICTED STOCK RIGHTS GRANTED UNDER THE 2022 LONG-TERM INCENTIVE STOCK PLAN ("PLAN") These Terms and Conditions (''Terms") apply to certain "Restricted Stock Rights" ("RSRs") granted by Huntington Ingalls Industries, Inc. (the "Company") in 20 . If you were granted an RSR award by the Company in 20 ? the date

August 4, 2022 EX-99.1

HII Reports Second Quarter 2022 Results

Exhibit 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Christie Thomas (Investors) [email protected] 757-380-2104 HII Reports Second Quarter 2022 Results ?Revenues were $2.7 billion in the quarter ?Net earnings of $178 million or $4.44 diluted earnings per share ?Free cash flow1 of $208 million in the quarter ?Reaffirms FY22 shipbuilding revenue1 and s

August 4, 2022 EX-10.2

Terms and Conditions Applicable to Restricted Performance Stock Rights Granted Under the 2022 Long-Term Incentive Stock Plan.

Exhibit 10.2 HUNTINGTON INGALLS INDUSTRIES, INC. TERMS AND CONDITIONS APPLICABLE TO 20 RESTRICTED PERFORMANCE STOCK RIGHTS GRANTED UNDER THE 2022 LONG-TERM INCENTIVE STOCK PLAN ("PLAN") These Terms and Conditions ("Terms") apply to certain "Restricted Performance Stock Rights" ("RPSRs") granted by Huntington Ingalls Industries, Inc. (the "Company") in 20 . If you were granted an RPSR award by the

August 4, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 4, 2022 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (

August 4, 2022 EX-10.4

Terms and Conditions Applicable to Restricted Stock Rights (2-year vesting) Granted Under the 2022 Long-Term Incentive Stock Plan.

Exhibit 10.4 HUNTINGTON INGALLS INDUSTRIES, INC. TERMS AND CONDITIONS APPLICABLE TO 20 RESTRICTED STOCK RIGHTS GRANTED UNDER THE 2022 LONG-TERM INCENTIVE STOCK PLAN ("PLAN") These Terms and Conditions ("Terms") apply to certain "Restricted Stock rughts" ("RSRs") granted by Huntington Ingalls Industries, Inc. (the "Company") in 20 . If you were granted an RSR award by the Company in 20 ? the date o

August 4, 2022 EX-10.3

Terms and Conditions Applicable to Restricted Stock Rights (1-year vesting) Granted Under the 2022 Long-Term Incentive Stock Plan.

Exhibit 10.3 HUNTINGTON INGALLS INDUSTRIES, INC. TERMS AND CONDITIONS APPLICABLE TO 20 RESTRICTED STOCK RIGHTS GRANTED UNDER THE 2022 LONG-TERM INCENTIVE STOCK PLAN ("PLAN") These Terms and Conditions ("Terms") apply to certain "Restricted Stock Rights" ("RSRs") granted by Huntington Ingalls Industries, Inc. (the "Company") in 20 . If you were granted an RSR award by the Company in 20 ? the date o

August 4, 2022 EX-10.6

Terms and Conditions Applicable to Non-Employee Director Stock Grants Under the 2022 Long-Term Incentive Stock Plan.

Exhibit 10.6 HUNTINGTON INGALLS INDUSTRIES, INC. TERMS AND CONDITIONS APPLICABLE TO NON-EMPLOYEE DIRECTOR STOCK GRANT UNDER THE 2022 LONG-TERM INCENTIVE STOCK PLAN ("Plan") These Terms and Conditions ("Terms") apply to Shares of the Company's common stock granted by Huntington Ingalls Industries, Inc. (the "Company'') to its directors who are not employed by the Company or one of its subsidiaries.

July 22, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 20, 2022 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (C

June 24, 2022 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 1

June 24, 2022 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 1

June 24, 2022 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 1

June 13, 2022 S-8

As filed with the Securities and Exchange Commission on June 13, 2022

As filed with the Securities and Exchange Commission on June 13, 2022 Registration No.

June 13, 2022 S-8 POS

As filed with the Securities and Exchange Commission on June 13, 2022

S-8 POS 1 d286082ds8pos.htm S-8 POS As filed with the Securities and Exchange Commission on June 13, 2022 Registration No. 333-183326 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Post-Effective Amendment No. 1 to Form S-8 Registration Statement No. 333-183326 Huntington Ingalls Industries, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 90-0607005 (S

June 13, 2022 EX-FILING FEES

Filing Fee Table.

EX-FILING FEES 4 d286080dexfilingfees.htm EX-FILING FEES Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Huntington Ingalls Industries, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1—Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price

May 31, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of the registrant as specified in its charter) DELAWARE 1-34910 (State or other jurisdiction

OMB APPROVAL OMB Number: 3235-0697 Expires: July 31, 2024 Estimated average burden hours per response 477.

May 31, 2022 EX-1.01

CONFLICT MINERALS REPORT

EX-1.01 2 d335225dex101.htm EX-1.01 Exhibit 1.01 CONFLICT MINERALS REPORT This Conflict Minerals Report (“CMR”) for the reporting period of January 1 to December 31, 2021, is provided in accordance with Rule 13p-1 under the Securities Exchange Act of 1934 (the “Rule”). COMPANY BACKGROUND Huntington Ingalls Industries, Inc. (“HII”, the “Company”, “we”, “us”, or “our”) is America’s largest military

May 23, 2022 424B3

Huntington Ingalls Industries, Inc. Offer to Exchange up to $600,000,000 2.043% Senior Notes due 2028 that have been registered under the Securities Act of 1933, as amended (the “Securities Act”), for any and all of our outstanding unregistered 2.043

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-264833 PROSPECTUS Huntington Ingalls Industries, Inc. Offer to Exchange up to $600,000,000 2.043% Senior Notes due 2028 that have been registered under the Securities Act of 1933, as amended (the ?Securities Act?), for any and all of our outstanding unregistered 2.043% Senior Notes due 2028 and up to $400,000,000 0.670% Senior

May 18, 2022 CORRESP

Huntington Ingalls Industries, Inc. 4101 Washington Avenue Newport News, VA 23607 May 18, 2022

CORRESP 1 filename1.htm Huntington Ingalls Industries, Inc. 4101 Washington Avenue Newport News, VA 23607 May 18, 2022 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: Huntington Ingalls Industries, Inc. Registration Statement on Form S-4 File No. 333-264833 Request for Acceleration Ladies and Gentlemen: Pursuant to Rule 461

May 11, 2022 CORRESP

Huntington Ingalls Industries, Inc. 4101 Washington Avenue Newport News, VA 23607

Huntington Ingalls Industries, Inc. 4101 Washington Avenue Newport News, VA 23607 May 11, 2022 Via EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: Huntington Ingalls Industries, Inc. (the “Company”) Registration Statement on Form S-4 Registration No. 333-264833. Ladies and Gentlemen: This letter is sent on behalf of Huntington

May 10, 2022 EX-3.90

Articles of Conversion of Commonwealth Technology, Incorporated into Commonwealth Technology Innovation LLC, dated, August 22, 2018

Exhibit 3.90 COMMONWEALTH OF VIRGINIA STATE CORPORATION COMMISSION Office of the Clerk August 23, 2018 BETH EPSTEIN UCC RETRIEVALS, INC. 7288 HANOVER GREEN DR MECHANICSVILLE, VA 23111 RECEIPT RE: Commonwealth Technology LLC ID: S772171 - 7 DCN: 18-08-22-1208 Dear Customer: This is your receipt for $100.00 covering the fees for filing articles of entity conversion with this office. This is also you

May 10, 2022 EX-3.95

Articles of Conversion of Enlighten IT Consulting Inc. into Enlighten IT Consulting LLC, dated December 21, 2016

Exhibit 3.95 ARTICLES OF CONVERSION OF ENLIGHTEN IT CONSULTING INC. A MARYLAND CORPORATION INTO ENLIGHTEN IT CONSULTING LLC A MARYLAND LIMITED LIABILITY COMPANY (Pursuant to the Section 3-901 et seq. of the Maryland General Corporation Code) The undersigned corporation DOES HEREBY CERTIFY THAT: 1. The name of the Maryland corporation is Enlighten IT Consulting Inc. 2. The date of the filing of the

May 10, 2022 EX-99.2

Form of Letter to Registered Holders and The Depository Trust Company Participants

Exhibit 99.2 LETTER TO REGISTERED HOLDERS AND THE DEPOSITORY TRUST COMPANY PARTICIPANTS Relating to HUNTINGTON INGALLS INDUSTRIES, INC. Offer to Exchange up to $600,000,000 2.043% Senior Notes due 2028 that have been registered under the Securities Act of 1933, as amended (the ?Securities Act?), for any and all of our outstanding unregistered 2.043% Senior Notes due 2028 and up to $400,000,000 0.6

May 10, 2022 EX-3.82

Certificate of Merger of Dysart Sub, Inc. with and into Alion Science and Technology Corporation, dated August 19, 2015

Exhibit 3.82 State of Delaware Secretary of State Division of Corporations Delivered 09:26 AM 08/19/2015 FILED 09:22 AM 08/19/2015 SRV 151189120 ? 3444444 FILE CERTIFICATE OF MERGER MERGING DYSART MERGER SUB, INC., a Delaware corporation WITH AND INTO ALION SCIENCE AND TECHNOLOGY CORPORATION, a Delaware corporation August 19, 2015 Pursuant to Section 251 of the Delaware General Corporation Law (th

May 10, 2022 EX-3.85

Certificate of Merger of Alion-CATI Corporation with and into Alion Science and Technology Corporation, dated January 3, 2017

Exhibit 3.85 State of Delaware Secretary of State Division of Corporations Delivered 06:30 PM 01/03/2017 FILED 06:30 PM 01/03/2017 SR 20170026997 - File Number 3444444 STATE OF DELAWARE CERTIFICATE OF MERGER OF FOREIGN CORPORATION INTO A DOMESTIC CORPORATION Pursuant to Title 8, Section 252 of the Delaware General Corporation Law, the undersigned corporation executed the following Certificate of M

May 10, 2022 EX-3.88

Certificate of Merger of Washington Consulting, Inc. with and into Alion Science and Technology Corporation, dated January 3, 2017

EX-3.88 14 d315086dex388.htm EX-3.88 Exhibit 3.88 State of Delaware Secretary of State Division of Corporations Delivered 06:40 PM 01/03/2017 FILED 06:40 PM 01/03/2017 SR 20170027008 - File Number 3444444 STATE OF DELAWARE CERTIFICATE OF MERGER OF FOREIGN CORPORATION INTO A DOMESTIC CORPORATION Pursuant to Title 8, Section 252 of the Delaware General Corporation Law, the undersigned corporation ex

May 10, 2022 S-4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-4 REGISTRATION STATEMENT THE SECURITIES ACT OF 1933 HUNTINGTON INGALLS INDUSTRIES, INC.* (Exact name of registrant as specified in its charter) * The co-registrants listed

Table of Contents Registration No. 333? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-4 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 HUNTINGTON INGALLS INDUSTRIES, INC.* (Exact name of registrant as specified in its charter) * The co-registrants listed on the next page are also included in this registration statement as additional registrants. Delaware 3

May 10, 2022 EX-5.3

Consent of Ballard Spahr LLP (included in Exhibit 5.3)

Exhibit 5.3 300 East Lombard Street, 18th Floor Baltimore, MD 21202-3268 TEL 410.528.5600 FAX 410.528.5650 www.ballardspahr.com May 10, 2022 Enlighten IT Consulting LLC c/o Huntington Ingalls Industries, Inc. 4101 Washington Avenue Newport News, Virginia 23607 Re: Enlighten IT Consulting LLC, a Maryland limited liability company (the ?Company?) ? Offer by Huntington Ingalls Industries, Inc., a Del

May 10, 2022 EX-3.91

Articles of Organization of Commonwealth Technology LLC, dated August 23, 2018.

Exhibit 3.91 AMENDED AND RESTATED ARTICLES OF INCORPORATION OF COMMONWEALTH TECHNOLOGY, INCORPORATED ARTICLE 1 NAME The name of the corporation is Commonwealth Technology, Incorporated (the ?Corporation?). ARTICLE 2 PURPOSES The purposes for which the Corporation is formed are: (a) To carry on a business of performing mechanical, electro-mechanical, and electronic research and development and the

May 10, 2022 EX-3.94

Amended and Restated Articles of Organization of Enlighten IT Consulting LLC, dated December 21, 2016

Exhibit 3.94 Articles of Incorporation 11/1/2007 ARTICLES OF INCORPORATION FOR A STOCK CORPORATION FIRST: The undersigned Daniela Balan whose address is c/o LegalZoom, 7083 Hollywood Blvd., Suite 180, Los Angeles, CA 90028 , being at least eighteen years of age, do(es) hereby form a corporation under the laws of the State of Maryland. SECOND: The name of the corporation is Enlighten IT Consulting

May 10, 2022 EX-3.96

Articles of Incorporation of MacAulay-Brown, Inc., dated May 7, 1979

EX-3.96 22 d315086dex396.htm EX-3.96 Exhibit 3.96

May 10, 2022 EX-3.102

Operating Agreement of Enlighten IT Consulting LLC, dated December 21, 2016

Exhibit 3.102 Enlighten IT Consulting LLC a Maryland Limited Liability Company LIMITED LIABILITY COMPANY AGREEMENT Dated as of December 21 2016 THE MEMBERSHIP INTERESTS REPRESENTED BY THIS LIMITED LIABILITY COMPANY AGREEMENT HAVE NOT BEEN REGISTERED UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED, OR UNDER ANY OTHER APPLICABLE SECURITIES LAWS. SUCH INTERESTS MAY NOT BE SOLD, ASSIGNED, P

May 10, 2022 EX-3.59

Certificate of Merger of HII Unmanned Systems Inc. with and into Hydroid, Inc., dated December 17, 2020.

Exhibit 3.59 State of Delaware Secretary of State Division of Corporations Delivered 01:55 PM 12/17/2020 FILED 01:55 PM 12/17/2020 SR 20208685284 - File Number 4470338 CERTIFICATE OF MERGER MERGING HII UNMANNED MARITIME SYSTEMS INC., a Delaware corporation WITH AND INTO HYDROID, INC., a Delaware corporation (Pursuant to Section 251 of the General Corporation Law of the State of Delaware) Hydroid,

May 10, 2022 EX-3.92

Articles of Amendment of Commonwealth Technology LLC which changes its name to Commonwealth Technology Innovation LLC and dated, March 27, 2019.

Exhibit 3.92 COMMONWEALTH OF VIRGINIA STATE CORPORATION COMMISSION ARTICLES OF AMENDMENT CHANGING THE NAME OF A VIRGINIA LIMITED LIABILITY COMPANY By the Members The undersigned, on behalf of the limited liability company set forth below, pursuant to ? 13.1-1014 of the Code of Virginia, states as follows: 1. The current name of the limited liability company, as it appears on the records of the Sta

May 10, 2022 EX-3.93

Operating Agreement of Commonwealth Technology Innovation LLC, dated July 20, 2020.

Exhibit 3.93 LIMITED LIABILITY COMPANY OPERATING AGREEMENT OF COMMONWEALTH TECHNOLOGY INNOVATION LLC This Limited Liability Company Operating Agreement (this ?Agreement?) of Commonwealth Technology Innovation LLC, a Virginia limited liability company (the ?Company?), is made and entered into as of July 20, 2020, by MacAulay-Brown, Incorporated, an Ohio corporation, as the sole member (the ?Member?

May 10, 2022 EX-99.1

Form of Letter of Transmittal

Exhibit 99.1 THIS DOCUMENT IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION. If you are in any doubt as to the action to be taken, you should immediately consult your broker, bank manager, lawyer, accountant, investment advisor or other professional adviser. LETTER OF TRANSMITTAL Relating to HUNTINGTON INGALLS INDUSTRIES, INC. Offer to Exchange up to $600,000,000 2.043% Senior Notes due 2028 tha

May 10, 2022 EX-99.3

Form of Letter to Clients

Exhibit 99.3 LETTER TO CLIENTS Relating to HUNTINGTON INGALLS INDUSTRIES, INC. Offer to Exchange up to $600,000,000 2.043% Senior Notes due 2028 that have been registered under the Securities Act of 1933, as amended (the ?Securities Act?), for any and all of our outstanding unregistered 2.043% Senior Notes due 2028 and up to 400,000,000 0.670% Senior Notes due 2023 that have been registered under

May 10, 2022 EX-3.100

Merger of MacB Enterprise Solutions, Inc. with and into MacAulay-Brown, Inc., dated June 29, 2016

Exhibit 3.100

May 10, 2022 EX-3.83

Certificate of Merger of Alion-JJMA Corporation with and into Alion Science and Technology Corporation, dated July 18, 2016

Exhibit 3.83 State of Delaware Secretary of State Division of Corporations Delivered 10:46 AM 07/18/2016 FILED 10:46 AM 07/18/2016 SR 20164947161 - File Number 3444444 STATE OF DELAWARE CERTIFICATE OF MERGER OF FOREIGN CORPORATION INTO A DOMESTIC CORPORATION Pursuant to Title 8, Section 252 of the Delaware General Corporation Law, the undersigned corporation executed the following Certificate of M

May 10, 2022 EX-3.101

Bylaws of Alion Science and Technology Corporation, dated November 19, 2018

Exhibit 3.101 BYLAWS of ALION SCIENCE AND TECHNOLOGY CORPORATION Revised: November 2019 BYLAWS of ALION SCIENCE AND TECHNOLOGY CORPORATION a Delaware corporation (hereinafter referred to as the ?Company?) ARTICLE I - OFFICES Section 1.1. Location. The address of the registered office of the Company in the State of Delaware and the name of the registered agent at such address shall be as specified

May 10, 2022 EX-3.89

Certificate of Merger of AlionMETI Corporation with and into Alion Science and Technology Corporation, dated January 3, 2017

Exhibit 3.89 State of Delaware Secretary of State Division of Corporations Delivered 06:43 PM 01/03/2017 FILED 06:43 PM 01/03/2017 SR 20170027012 - File Number 3444444 STATE OF DELAWARE CERTIFICATE OF MERGER OF FOREIGN CORPORATION INTO A DOMESTIC CORPORATION Pursuant to Title 8, Section 252 of the Delaware General Corporation Law, the undersigned corporation executed the following Certificate of M

May 10, 2022 EX-25.1

Statement of Eligibility on Form T-1 under the Trust Indenture Act of the Trustee under the Indenture

Exhibit 25.1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ? CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(B)(2) U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 91-1821036 I.R.S. E

May 10, 2022 EX-3.103

Certificate of Merger of Washington Consulting Government Services, Inc. with and into Alion Science and Technology Corporation, dated January 3, 2017

Exhibit 3.103 State of Delaware Secretary of State Division of Corporations Delivered 06:34 PM 01/03/2017 FILED 06:34 PM 01/03/2017 STATE OF DELAWARE SR 20170027001 - File Number 3444444 CERTIFICATE OF MERGER OF FOREIGN CORPORATION INTO A DOMESTIC CORPORATION Pursuant to Title 8, Section 252 of the Delaware General Corporation Law, the undersigned corporation executed the following Certificate of

May 10, 2022 EX-3.21

Certificate of Ownership and Merger merging Novonics Corporation, with and into HII Defense and Federal Solutions, Inc., dated January 1, 2021.

Exhibit 3.21 State of Delaware Secretary of State Division of Corporations Delivered 12:25 PM 12/17/2020 FILED 12:25 PM 12/17/2020 SR 20208683426 - File Number 2058433 CERTIFICATE OF OWNERSHIP AND MERGER MERGING NOVONICS CORPORATION, a California corporation WITH AND INTO HII DEFENSE AND FEDERAL SOLUTIONS, INC., a Delaware corporation (Pursuant to Section 253 of the General Corporation Law of the

May 10, 2022 EX-3.81

Amended and Restated Certificate of Incorporation of Alion Science and Technology Corporation, dated August 19, 2015

Exhibit 3.81 FIFTH AMENDED AND RESTATED CERTIFICATE OF INCORPORATION of ALION SCIENCE AND TECHNOLOGY CORPORATION (Pursuant to Section 102 of the General Corporation Law of the State of Delaware) FIRST: The name of the corporation is: Alion Science and Technology Corporation (the ?Corporation?). SECOND: The address of the registered office of the Corporation in the State of Delaware is 615 South Du

May 10, 2022 EX-3.87

Certificate of Merger of Innovative Technology Solutions Corporation with and into Alion Science and Technology Corporation, dated January 3, 2017

Exhibit 3.87 State of Delaware Secretary of State Division of Corporations Delivered 06:38 PM 01/03/2017 FILED 06:38 PM 01/03/2017 SR 20170027003 - File Number 3444444 STATE OF DELAWARE CERTIFICATE OF MERGER OF FOREIGN CORPORATION INTO A DOMESTIC CORPORATION Pursuant to Title 8, Section 252 of the Delaware General Corporation Law, the undersigned corporation executed the following Certificate of M

May 10, 2022 EX-5.4

Consent of Hahn Loeser & Parks LLP (included in Exhibit 5.4)

Exhibit 5.4 May 10, 2022 MacAulay-Brown, Inc. c/o Huntington Ingalls Industries, Inc. 4101 Washington Avenue Newport News, VA 23607 Re: Exchange Offer of $600,000,000 aggregate principal amount of new 2.043% Senior Notes due 2028 (the ?New 2028 Notes?) in exchange for an equal amount of outstanding 2.043% Senior Notes due 2028 (the ?Old 2028 Notes? and, together with the New 2028 Notes, the ?2028

May 10, 2022 EX-FILING FEES

Filing Fee Table

EX-FILING FEES 40 d315086dexfilingfees.htm EX-FILING FEES Calculation of Filing Fee Tables Form S-4 (Form Type) Huntington Ingalls Industries, Inc. (Issuer) Alion Holding Corp. (Guarantor) Alion Science and Technology Corporation (Guarantor) Commonwealth Technology Innovation LLC (Guarantor) Enlighten IT Consulting LLC (Guarantor) Fleet Services Holding Corp. (Guarantor) HII Defense and Federal So

May 10, 2022 EX-3.84

Certificate of Merger of Alion-BMH Corporation with and into Alion Science and Technology Corporation, dated January 3, 2017

EX-3.84 10 d315086dex384.htm EX-3.84 Exhibit 3.84 State of Delaware Secretary of State Division of Corporations Delivered 06:28 PM 01/03/2017 FILED 06:28 PM 01/03/2017 SR 20170026995 - File number 3444444 STATE OF DELAWARE CERTIFICATE OF MERGER OF FOREIGN CORPORATION INTO A DOMESTIC CORPORATION Pursuant to Title 8, Section 252 of the Delaware General Corporation Law, the undersigned corporation ex

May 10, 2022 EX-3.86

Certificate of Merger of MA&D Corporation with and into Alion Science and Technology Corporation, dated January 3, 2017

Exhibit 3.86 State of Delaware Secretary of State Division of Corporations Delivered 06:32 PM 01/03/2017 FILED 06:32 PM 01/03/2017 SR 20170026998 - File Number 3444444 STATE OF DELAWARE CERTIFICATE OF MERGER OF FOREIGN CORPORATION INTO A DOMESTIC CORPORATION Pursuant to Title 8, Section 252 of the Delaware General Corporation Law, the undersigned corporation executed the following Certificate of M

May 10, 2022 EX-99.4

Form of Notice of Guaranteed Delivery

Exhibit 99.4 NOTICE OF GUARANTEED DELIVERY Relating to HUNTINGTON INGALLS INDUSTRIES, INC. Offer to Exchange up to $600,000,000 2.043% Senior Notes due 2028 that have been registered under the Securities Act of 1933, as amended (the ?Securities Act?), for any and all of our outstanding unregistered 2.043% Senior Notes due 2028 and up to $400,000,000 0.670% Senior Notes due 2023 that have been regi

May 10, 2022 EX-3.99

Third Amended and Restated Bylaws of MacAulay-Brown, Inc., dated December 5, 2001

Exhibit 3.99 THIRD AMENDED REGULATIONS OF MACAULAY-BROWN, INC. ARTICLE I Principal Office The principal office of the Corporation shall be at such place within the city, village, or township specified in the Amended Articles of Incorporation as may be determined and designated from time to time by the Board of Directors. ARTICLE II Meetings of Shareholders Section 1. Annual Meeting. The annual mee

May 10, 2022 EX-3.98

Amended and Restated Articles of Incorporation of MacAulay-Brown, Inc., dated May 10, 1991

Exhibit 3.98

May 10, 2022 EX-3.97

Certificate of Amendment to the Articles of Incorporation of MacAulay-Brown, Inc., dated January 29, 1982

Exhibit 3.97

May 10, 2022 EX-3.20

Certificate of Merger, merging Fulcrum IT Services, LLC, G2, Inc., Cybercents Solutions, LLC, HII Mission Driven Innovative Technical Services LLC and HII Mission Driven Innovation Government Solutions Inc. and HII Systems Innovations Inc. with and into HII Defense and Federal Solutions, Inc., dated December 17, 2020.

Exhibit 3.20 State of Delaware Secretary of State Division of Corporations Delivered 01:51 PM 12/17/2020 FILED 01:51 PM 12/17/2020 SR 20208685185 - File Number 2058433 CERTIFICATE OF MERGER MERGING FULCRUM IT SERVICES, LLC, a Virginia limited liability company, G2, INC., a Maryland corporation, CYBERCENTS SOLUTIONS, LLC, a Delaware limited liability company, HII MISSION DRIVEN INNOVATIVE TECHNICAL

May 10, 2022 EX-3.80

Bylaws of Alion Holding Corp.

Exhibit 3.80 BYLAWS of ALION HOLDING CORP. BYLAWS of ALION HOLDING CORP. a Delaware corporation (hereinafter referred to as the ?Company?) ARTICLE I - OFFICES Section 1.1. Location. The address of the registered office of the Company in the State of Delaware and the name of the registered agent at such address shall be as specified in the Certificate of Incorporation or, if subsequently changed, a

May 10, 2022 EX-3.79

Certificate of Incorporation of Alion Holding Corp., dated July 17, 2015.

Exhibit 3.79 I, JEFFREY W. BULLOCK, SECRETARY OF STATE OF THE STATE OF DELAWARE, DO HEREBY CERTIFY THE ATTACHED IS A TRUE AND CORRECT COPY OF THE CERTIFICATE OF AMENDMENT OF ?DYSART ACQUISITION CORP. ?, CHANGING ITS NAME FROM ?DYSART ACQUISITION CORP. ? TO ?ALION HOLDING CORP. ?, FILED IN THIS OFFICE ON THE FOURTH DAY OF AUGUST, A.D. 2015, AT 8:08 O?CLOCK P.M. A FILED COPY OF THIS CERTIFICATE HAS

May 9, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 3, 2022 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (Com

May 6, 2022 8-K

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 3, 2022 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (Com

May 5, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 5, 2022 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (Com

May 5, 2022 EX-99.2

HII Q1 2022 Earnings May 5, 2022 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Cautionary Statement Regarding Forward-looking Statements Statements in this presentation, other tha

HII Q1 2022 Earnings May 5, 2022 Chris Kastner President and Chief Executive Officer Tom Stiehle Executive Vice President and Chief Financial Officer Cautionary Statement Regarding Forward-looking Statements Statements in this presentation, other than statements of historical fact, constitute "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995.

May 5, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ______________________________________________________________ ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34910 HUN

May 5, 2022 EX-99.1

HII Reports First Quarter 2022 Results

EXHIBIT 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Christie Thomas (Investors) [email protected] 757-380-2104 HII Reports First Quarter 2022 Results ?Revenues were $2.6 billion in the quarter ?Net earnings of $140 million, $3.50 diluted earnings per share ?Delivered Virginia-class submarine Montana (SSN 794) ?Delivered amphibious transport dock For

March 21, 2022 DEF 14A

Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan (incorporated by reference to Appendix B to the registrant’s definitive proxy statement on Schedule 14A, as filed with the Securities and Exchange Commission on March 21, 2022).

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitte

March 21, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

March 4, 2022 8-K/A

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No.1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) January 27, 2022 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdictio

March 4, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 1, 2022 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation) (C

February 10, 2022 EX-99.1

Huntington Ingalls Industries Reports Fourth Quarter and Full Year 2021 Results

EX-99.1 2 hii2021q4earningsrelease.htm EX-99.1 EXHIBIT 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Christie Thomas (Investors) [email protected] 757-380-2104 Huntington Ingalls Industries Reports Fourth Quarter and Full Year 2021 Results •Revenues were $2.7 billion in the fourth quarter, $9.5 billion in 2021 •Operating margin was 4.5% in the fourth

February 10, 2022 EX-4.9

First Supplemental Indenture, dated as of December 14, 2021, to the Indenture, dated as of August 16, 2021, by and among Huntington Ingalls Industries, Inc., certain subsidiaries of Huntington Ingalls Industries, Inc. and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.9 to the Company's Annual Report on Form 10-K filed on February 10, 2022).

Exhibit 4.9 FIRST SUPPLEMENTAL INDENTURE dated as of December 14, 2021 among Huntington Ingalls Industries, Inc., The Guarantors Party Hereto and U.S. Bank National Association, as Trustee 0.670% Senior Notes due 2023 2.043% Senior Notes due 2028 Exhibit 4.9 THIS FIRST SUPPLEMENTAL INDENTURE (this ?Supplemental Indenture?), entered into as of December 14, 2021, among Huntington Ingalls Industries,

February 10, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-34910 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registran

February 10, 2022 EX-22

List of subsidiary guarantors of registered securities of Huntington Ingalls Industries, Inc.

Exhibit 22 List of Subsidiary Guarantors of Registered Securities of Huntington Ingalls Industries, Inc.

February 10, 2022 EX-4.11

Description of Securities

Exhibit 4.11 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE EXCHANGE ACT Description of Common Stock General The Restated Certificate of Incorporation (the “Restated Certificate”) of Huntington Ingalls Industries, Inc. (the “Company,” “us,” “we,” or “our”), as amended, authorizes the issuance of up to 150,000,000 shares of common stock, par value $0.01 per share (“Common Stock”), and

February 10, 2022 SC 13G/A

HII / Huntington Ingalls Industries Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01120-huntingtoningallsind.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)* Name of issuer: Huntington Ingalls Industries Inc. Title of Class of Securities: Common Stock CUSIP Number: 446413106 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the approp

February 10, 2022 EX-4.4

Third Supplemental Indenture, dated as of December 14, 2021, to the Indenture, dated as of December 1, 2017, among Huntington Ingalls Industries, Inc., the guarantors party thereto, and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.4 to the Company's Annual Report on Form 10-K filed on February 10, 2022).

EX-4.4 2 hii-ex44202110xk.htm EX-4.4 Exhibit 4.4 THIRD SUPPLEMENTAL INDENTURE dated as of December 14, 2021 among Huntington Ingalls Industries, Inc., The Guarantors Party Hereto and Wells Fargo Bank, National Association, as Trustee 3.483% Senior Notes due 2027 Exhibit 4.4 THIS THIRD SUPPLEMENTAL INDENTURE (this “Third Supplemental Indenture”), entered into as of December 14, 2021, among Huntingt

February 10, 2022 EX-99.2

Q4 2021 Earnings Presentation February 10, 2022 Mike Petters President and Chief Executive Officer Chris Kastner Executive Vice President and Chief Operating Officer Tom Stiehle Executive Vice President and Chief Financial Officer HARD STUFF DONE RIG

Q4 2021 Earnings Presentation February 10, 2022 Mike Petters President and Chief Executive Officer Chris Kastner Executive Vice President and Chief Operating Officer Tom Stiehle Executive Vice President and Chief Financial Officer HARD STUFF DONE RIGHT Cautionary Statement Regarding Forward-Looking Statements 2 HUNTINGTON INGALLS INDUSTRIES Statements in this presentation, other than statements of historical fact, constitute "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995.

February 10, 2022 EX-4.7

Second Supplemental Indenture, dated as of December 14, 2021, to the Indenture, dated as of March 30, 2020, among Huntington Ingalls Industries, Inc., the guarantors party thereto, and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.7 to the Company's Annual Report on Form 10-K filed on February 10, 2022).

Exhibit 4.7 SECOND SUPPLEMENTAL INDENTURE dated as of December 14, 2021 among Huntington Ingalls Industries, Inc., The Guarantors Party Hereto and Wells Fargo Bank, National Association, as Trustee 3.844% Senior Notes due 2025 4.200% Senior Notes due 2030 Exhibit 4.7 THIS SECOND SUPPLEMENTAL INDENTURE (this ?Second Supplemental Indenture?), entered into as of December 14, 2021, among Huntington In

February 10, 2022 EX-10.35

Huntington Ingalls Industries, Inc. Amended and Restated Directors' Compensation Policy.

EX-10.35 6 hii-ex1035202110xk.htm EX-10.35 EXHIBIT 10.35 HUNTINGTON INGALLS INDUSTRIES, INC. AMENDED AND RESTATED DIRECTORS' COMPENSATION POLICY Directors of Huntington Ingalls Industries, Inc., a Delaware corporation (the "Company"), who are not employed by the Company or one of its subsidiaries (''non-employee directors") are entitled to the compensation set forth below for their service as a me

February 10, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 10, 2022 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation

February 10, 2022 EX-21.1

List of subsidiaries of Huntington Ingalls Industries, Inc.

Exhibit 21.1 SUBSIDIARIES OF HUNTINGTON INGALLS INDUSTRIES, INC. Name of Subsidiary Jurisdiction of Organization Ownership Percentage Alion Asia Corporation Delaware 100% Alion Holding Corp. Delaware 100% Alion International Corporation Delaware 100% Alion Offshore Services, Inc. Delaware 100% Alion Maritime India Private Limited Delaware 100% Alion Science and Technology Corporation Delaware 100%

February 1, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) January 27, 2022 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation)

February 1, 2022 EX-99.1

HII Names Chris Kastner President & CEO; Mike Petters to Become Executive Vice Chairman of the Board

Exhibit 99.1 NEWS RELEASE Contact: Brooke Hart [email protected] (202) 329-5285 HII Names Chris Kastner President & CEO; Mike Petters to Become Executive Vice Chairman of the Board NEWPORT NEWS, Va. (Jan. 28, 2022) ? Huntington Ingalls Industries (NYSE:HII) announced Thursday its board of directors elected Chief Operating Officer Chris Kastner to become HII president and chief executive offic

February 1, 2022 EX-99.1

HII Elects Frank R. Jimenez to Board of Directors

EX-99.1 2 d82681dex991.htm EX-99.1 Exhibit 99.1 NEWS RELEASE Contact: Brooke Hart [email protected] (202) 329-5285 HII Elects Frank R. Jimenez to Board of Directors NEWPORT NEWS, Va. (Feb. 1, 2022) HII (NYSE:HII) announced today that former General Counsel of the U.S. Department of the Navy Frank R. Jimenez has been elected to the company’s board of directors, effective Jan. 27, 2022. Most re

February 1, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) January 27, 2022 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) DELAWARE 1-34910 90-0607005 (State or other jurisdiction of incorporation) (

November 4, 2021 8-K/A

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No.1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 19, 2021 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction

November 4, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 4, 2021 HUNTINGTON INGALLS INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-34910 90-0607005 (State or other jurisdiction of incorporation)

November 4, 2021 EX-99.1

Huntington Ingalls Industries Reports Third Quarter 2021 Results

Exhibit 99.1 News Release Contacts: Brooke Hart (Media) [email protected] 202-264-7108 Dwayne Blake (Investors) [email protected] 757-380-2104 Huntington Ingalls Industries Reports Third Quarter 2021 Results ?Revenues were $2.3 billion in the quarter ?Operating margin was 5.0% and segment operating margin1 was 7.0% ?Diluted earnings per share was $3.65 ?Pension adjusted diluted earnings

November 4, 2021 EX-99.1

CONSOLIDATED FINANCIAL STATEMENTS FOR THE YEARS ENDED SEPTEMBER 30, 2020 AND 2019 Alion Science and Technology Corporation 8350 Broad Street, Suite 1400 McLean, VA 22102 (703) 918-4480

Exhibit 99.1 CONSOLIDATED FINANCIAL STATEMENTS FOR THE YEARS ENDED SEPTEMBER 30, 2020 AND 2019 Alion Science and Technology Corporation 8350 Broad Street, Suite 1400 McLean, VA 22102 (703) 918-4480 ALION SCIENCE AND TECHNOLOGY CORPORATION Audited Consolidated Financial Statements of Alion Science and Technology Corporation Report of Independent Auditors 3 Consolidated Financial Statements Balance

November 4, 2021 EX-10.1

Amended and Restated Revolving Credit Agreement, dated as of August 2, 2021, among Huntington Ingalls Industries, Inc., the lenders party thereto and JPMorgan Chase Bank, N.A., as Administrative Agent and an Issuing Bank

EX-10.1 2 exhibit101amendedandrestat.htm EX-10.1 EXHIBIT 10.1 Execution Version AMENDED AND RESTATED CREDIT AGREEMENT dated as of August [2], 2021 among HUNTINGTON INGALLS INDUSTRIES, INC., The Lenders Party Hereto, JPMORGAN CHASE BANK, N.A., as Administrative Agent and Issuing Bank, and JPMORGAN CHASE BANK, N.A., BANK OF AMERICA, N.A., MIZUHO BANK, LTD., MUFG BANK, LTD., THE BANK OF NOVA SCOTIA,

November 4, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ______________________________________________________________ ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34910

November 4, 2021 EX-10.2

Credit Agreement, dated as of August 2, 2021, among Huntington Ingalls Industries, Inc., the lenders party thereto and JPMorgan Chase Bank, N.A., as Administrative Agent.

EXHIBIT 10.2 Execution Version CREDIT AGREEMENT dated as of August [2], 2021 among HUNTINGTON INGALLS INDUSTRIES, INC., The Lenders Party Hereto, JPMORGAN CHASE BANK, N.A., as Administrative Agent, JPMORGAN CHASE BANK, N.A., as Sole Lead Arranger and Sole Bookrunner, and BANK OF AMERICA, N.A., MUFG BANK, LTD., MIZUHO BANK, LTD., THE BANK OF NOVA SCOTIA, U.S. BANK NATIONAL ASSOCIATION and WELLS FAR

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