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Form 8-K

sec.gov

8-K — HUNTINGTON INGALLS INDUSTRIES, INC.

Accession: 0001501585-26-000027

Filed: 2026-05-05

Period: 2026-05-05

CIK: 0001501585

SIC: 3730 (SHIP & BOAT BUILDING & REPAIRING)

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — hii-20260505.htm (Primary)

EX-99.1 (hii2026q1earningsrelease.htm)

EX-99.2 (hiiq12026earningspresent.htm)

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8-K

8-K (Primary)

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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, 2026

_____________________________________

HUNTINGTON INGALLS INDUSTRIES, INC.

(Exact name of registrant as specified in its charter)

_____________________________________

Delaware 001-34910 90-0607005

(State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.)

4101 Washington Avenue

Newport News Virginia 23607

(Address of principal executive offices)  (Zip Code)

(757) 380-2000

(Registrant’s telephone number, including area code)

(Former name or former address, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock HII New York Stock Exchange

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition.

On May 5, 2026, Huntington Ingalls Industries, Inc. issued a press release announcing its financial results for the quarter ended March 31, 2026. A copy of the press release is furnished as Exhibit 99.1 hereto. Also furnished as Exhibit 99.2 is the corporation’s earnings presentation for the first quarter 2026 earnings release conference call.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.    Description

99.1

Press Release dated May 5, 2026.

99.2

Earnings Presentation dated May 5, 2026.

104  Cover Page Interactive Data File (embedded within Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

HUNTINGTON INGALLS INDUSTRIES, INC.

May 5, 2026

By:   /s/ Thomas E. Stiehle

Thomas E. Stiehle

Executive Vice President and Chief Financial Officer

EX-99.1

EX-99.1

Filename: hii2026q1earningsrelease.htm · Sequence: 2

Document

Exhibit 99.1

News Release

Contacts:

Brooke Hart (Media)

brooke.hart@hii-co.com

202-264-7108

Christie Thomas (Investors)

christie.thomas@hii-co.com

757-380-2104

HII Reports First Quarter 2026 Results

NEWPORT NEWS, Va. (May 5, 2026) - HII (NYSE: HII) today reported results for the first quarter of fiscal 2026.

Highlights

•First quarter revenues were $3.1 billion

•First quarter net earnings were $149 million or $3.79 diluted earnings per share

•Completed builder’s sea trials for aircraft carrier John F. Kennedy (CVN 79)

•New collective bargaining agreements ratified at Ingalls Shipbuilding that extend through 2031

•Company reaffirms previously issued FY26 financial guidance1

First Quarter Results

First quarter 2026 revenues of $3.1 billion were up 13.4% from the first quarter of 2025, driven by growth at Newport News Shipbuilding, Ingalls Shipbuilding and Mission Technologies.

Operating income in the first quarter of 2026 was $155 million and operating margin was 5.0%, compared to $161 million and 5.9%, respectively, in the first quarter of 2025.

Segment operating income2 in the first quarter of 2026 was $172 million and segment operating margin2 was 5.6%, compared to $171 million and 6.3%, respectively, in the first quarter of 2025.

Net earnings in the first quarter of 2026 were $149 million, compared to $149 million in the first quarter of 2025. Diluted earnings per share in the quarter was $3.79, compared to $3.79 in the first quarter of 2025.

Net cash used in operating activities in the quarter was $390 million and free cash flow2 was negative $461 million, compared to net cash used in operating activities of $395 million and free cash flow2 of negative $462 million in the first quarter of 2025.

New contract awards in the first quarter of 2026 were $4.0 billion, bringing total backlog to 54.0 billion as of March 31, 2026.

“We made good progress on our 2026 operational initiatives in the first quarter. Shipbuilding throughput has continued to improve with meaningful year over year growth in the first quarter as our team remains focused on driving efficiency and expanding the industrial base network," said Chris Kastner, HII’s president and CEO.

1The financial outlook, expectations and other forward looking statements provided by the company for 2026 and beyond reflect the company's judgment based on information available at the time of this release. Please see the "Forward-looking Statements" section in this release and our Form 10-Q for factors that may impact the company's ability to meet expectations.

2Non-GAAP measures. See Exhibit B for definitions and reconciliations.

HII

4101 Washington Ave. • Newport News, VA 23607

www.HII.com

Page 1 of 12

Results of Operations

Three Months Ended

March 31

($ in millions, except per share amounts) 2026 2025 $ Change % Change

Sales and service revenues $ 3,099  $ 2,734  $ 365  13.4  %

Operating income 155  161  (6) (3.7) %

Operating margin % 5.0  % 5.9  % (89) bps

Segment operating income1

172  171  1  0.6  %

Segment operating margin %1

5.6  % 6.3  % (70) bps

Net earnings 149  149  —  —  %

Diluted earnings per share $ 3.79  $ 3.79  $ —  —  %

1 Non-GAAP measures that exclude non-segment factors affecting operating income. See Exhibit B for definitions and reconciliations.

Segment Operating Results

Ingalls Shipbuilding

Three Months Ended

March 31

($ in millions) 2026 2025 $ Change % Change

Revenues $ 725  $ 637  $ 88  13.8  %

Segment operating income 49  46  3  6.5  %

Segment operating margin % 6.8  % 7.2  % (46) bps

Ingalls Shipbuilding revenues for the first quarter of 2026 were $725 million, an increase of $88 million, or 13.8%, from the same period in 2025, primarily driven by higher volumes in surface combatants.

Ingalls Shipbuilding segment operating income for the first quarter of 2026 was $49 million, an increase of $3 million from the same period in 2025. Segment operating margin in the first quarter of 2026 was 6.8%, compared to 7.2% in the same period last year. The increase in segment operating income was driven by higher volumes in surface combatants, partially offset by lower performance in amphibious assault ships.

Key Ingalls Shipbuilding milestone for the quarter:

•Completed builder’s sea trials for USS Zumwalt (DDG 1000)

•Authenticated the keel of amphibious transport dock Philadelphia (LPD 32)

•Ratified new collective bargaining agreements that extend through 2031

HII

4101 Washington Ave. • Newport News, VA 23607

www.HII.com

Page 2 of 12

Newport News Shipbuilding

Three Months Ended

March 31

($ in millions) 2026 2025 $ Change % Change

Revenues $ 1,665  $ 1,396  $ 269  19.3  %

Segment operating income 88  85  3  3.5  %

Segment operating margin % 5.3  % 6.1  % (80) bps

Newport News Shipbuilding revenues for the first quarter of 2026 were $1.7 billion, an increase of $269 million, or 19.3%, from the same period in 2025. The increase was primarily driven by higher volumes in aircraft carriers, submarines and naval nuclear support services.

Newport News Shipbuilding segment operating income for the first quarter of 2026 was $88 million, an increase of $3 million from the same period in 2025. Segment operating margin in the first quarter of 2026 was 5.3% compared to 6.1% in the same period last year. The increase in segment operating income was primarily driven by the higher volumes described above, partially offset by contract adjustments and incentives in the first quarter of 2025 on the Virginia-class submarine program, as well as lower performance in aircraft carrier construction.

Key Newport News Shipbuilding milestones for the quarter:

•Completed builder’s sea trials for aircraft carrier John F. Kennedy (CVN 79)

Mission Technologies

Three Months Ended

March 31

($ in millions) 2026 2025 $ Change % Change

Revenues $ 748  $ 735  $ 13  1.8  %

Segment operating income 35  40  (5) (12.5) %

Segment operating margin % 4.7  % 5.4  % (76) bps

Mission Technologies revenues for the first quarter of 2026 were $748 million, an increase of $13 million, or 1.8%, from the same period in 2025. The increases were primarily due to higher volumes in All-Domain Operations, Unmanned Systems, and Global Security, partially offset by lower volumes in Warfare Systems.

Mission Technologies segment operating income for the first quarter of 2026 was $35 million, a decrease of $5 million from the same period in 2025. Segment operating margin in the first quarter of 2026 was 4.7%, compared to 5.4% in the same period last year. The decrease in segment operating income was primarily due to lower equity income from nuclear and environmental joint ventures, partially offset by higher performance in Warfare Systems.

Mission Technologies results included approximately $18 million of amortization of purchased intangible assets in the first quarter of 2026, compared to approximately $22 million in the same period last year.

Mission Technologies EBITDA margin1 in the first quarter of 2026 was 7.8%, compared to 9.1% in the first quarter of 2025.

Key Mission Technologies milestones for the quarter:

•Completed the expansion of our U.K. unmanned operations facility, which significantly enhances and strengthens the company’s presence in the U.K. and increases capacity and support for the U.K. Royal Navy and European partners

•Selected to compete on $25.4 billion Advanced Technology Support Program V (ATSP5) microelectronics multi-award contract

1Non-GAAP measures. See Exhibit B for definitions and reconciliations.

HII

4101 Washington Ave. • Newport News, VA 23607

www.HII.com

Page 3 of 12

HII Financial Outlook1

•Reaffirming FY26 and medium term outlook

•Medium term2 HII revenue growth of approximately 6%

•Medium term2 shipbuilding revenue growth of approximately 6%

•Medium term2 Mission Technologies revenue growth of approximately 5%

•FY26 shipbuilding revenue between $9.7 and $9.9 billion; expect shipbuilding operating margin3 between 5.5% and 6.5%

•FY26 Mission Technologies revenue between $3.0 and $3.2 billion,

•FY26 Mission Technologies segment operating margin of approximately 5%; and Mission Technologies EBITDA margin3 between 8.4% and 8.6%

•FY26 free cash flow3 between $500 and $600 million

FY26 Outlook1

Shipbuilding Revenue $9.7B - $9.9B

Shipbuilding Operating Margin3

5.5% - 6.5%

Mission Technologies Revenue

$3.0B - $3.2B

Mission Technologies Segment Operating Margin

~5%

Mission Technologies EBITDA Margin3

8.4% - 8.6%

Operating FAS/CAS Adjustment ($44M)

Non-current State Income Tax Expense4

~($20M)

Interest Expense ($105M)

Non-operating Retirement Benefit $213M

Effective Tax Rate ~17%

Depreciation & Amortization ~$330M

Capital Expenditures 4% - 5% of Sales

Free Cash Flow3

$500M - $600M

1The financial outlook, expectations, and other forward-looking statements provided by the company for 2026 and beyond reflect the company's

judgment based on the information available at the time of this release. Please see the "Forward-looking Statements" section in this release and

our Form 10-Q for factors that may impact the company's ability to meet expectations.

2Medium term growth represents our expected compound annual growth rate over the next three to five years.

3Non-GAAP measures. See Exhibit B for definitions. In reliance upon Item 10(e)(1)(i)(B) of Regulation S-K, reconciliations of forward–looking

GAAP and non–GAAP measures are not provided because of the unreasonable effort associated with providing such reconciliations due to the

variability in the occurrence and the amounts of certain components of GAAP and non-GAAP measures. For the same reasons, we are unable

to address the significance of the unavailable information, which could be material to future results.

4Outlook is based on current tax law. Variability exists based on how and when individual states conform to recent federal tax law changes.

HII

4101 Washington Ave. • Newport News, VA 23607

www.HII.com

Page 4 of 12

About HII

HII is America’s largest shipbuilder, delivering the world’s most powerful ships and all-domain mission technologies, including unmanned systems, to U.S. and allied defense customers. HII is the largest producer of unmanned underwater vehicles for the U.S. Navy and the world.

With a more than 140-year history of advancing U.S. national security, HII builds and integrates defense capabilities extending from the core fleet to C6ISR, AI/ML, EW and synthetic training. Headquartered in Virginia, HII’s workforce is 44,000 strong. For more information, visit www.HII.com.

Conference Call Information

HII will webcast its earnings conference call at 9 a.m. Eastern time today. A live audio broadcast of the conference call and supplemental presentation will be available on the investor relations page of the company’s website: www.HII.com. A replay of the call will be available on the website for a limited time.

HII

4101 Washington Ave. • Newport News, VA 23607

www.HII.com

Page 5 of 12

Cautionary Statement Regarding Forward-Looking Statements and Projections

Statements in this earnings release 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. In some cases, you can identify forward-looking statements by words such as "may," "will," "should," "expects," "intends," "plans," "anticipates," "believes," "estimates," "guidance," "outlook," "predicts," "potential," "continue," and similar words or phrases or the negative of these words or phrases. These statements relate to future events or our future financial performance and involve known and unknown risks, uncertainties, and other factors that may cause our actual results, levels of activity, performance, or achievements to be materially different from any future results, levels of activity, performance, or achievements expressed or implied by these forward-looking statements. Although we believe the expectations reflected in the forward-looking statements are reasonable when made, we cannot guarantee future results, levels of activity, performance, or achievements. There are a number of important factors that could cause our actual results to differ materially from the results anticipated by our forward-looking statements, which include, but are not limited to:

•our dependence on the U.S. Government for substantially all of our business;

•significant delays or reductions in appropriations for our programs and/or changes in customer priorities and requirements (including government budgetary constraints, government shutdowns, shifts in defense spending, and changes in customer short-range and long-range plans);

•our ability to estimate our future contract costs, including cost increases due to inflation, labor challenges, changes in trade policy, or other factors and our efforts to recover or offset such costs and/or changes in estimated contract costs, and perform our contracts effectively;

•changes in business practices, procurement processes and government regulations, including changes through executive orders, contract terms, or other policies or practices applicable to our industry, and our ability to comply with such requirements;

•adverse economic conditions in the United States and globally;

•our level of indebtedness and ability to service our indebtedness;

•our ability to deliver our products and services at an affordable life cycle cost and compete within our markets;

•our ability to attract, retain, and train a qualified workforce;

•subcontractor and supplier performance and the availability and pricing of raw materials and components;

•our ability to execute our strategic plan, including with respect to share repurchases, dividends, capital expenditures, and strategic acquisitions;

•investigations, claims, disputes, enforcement actions, litigation (including criminal, civil, and administrative), and/or other legal proceedings, and improper conduct of employees, agents, subcontractors, suppliers, business partners, or joint ventures in which we participate, including the impact on our reputation or ability to do business;

•changes in key estimates and assumptions regarding our pension and retiree health care costs;

•security threats, including cyber security threats, and related disruptions;

•natural and environmental disasters and political instability;

•health epidemics, pandemics and similar outbreaks; and

•other risk factors discussed herein and in our other filings with the SEC.

There may be other risks and uncertainties that we are unable to predict at this time or that we currently do not expect to have a material adverse effect on our business, and we undertake no obligation to update or revise any forward-looking statements. You should not place undue reliance on any forward-looking statements that we may make.

This release also contains non-GAAP financial measures and includes a GAAP reconciliation of these financial measures. Non-GAAP financial measures should not be construed as being more important than comparable GAAP measures.

HII

4101 Washington Ave. • Newport News, VA 23607

www.HII.com

Page 6 of 12

Exhibit A: Financial Statements

HUNTINGTON INGALLS INDUSTRIES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (UNAUDITED)

Three Months Ended March 31

(in millions, except per share amounts) 2026 2025

Sales and service revenues

Product sales $ 2,004  $ 1,713

Service revenues 1,095  1,021

Sales and service revenues 3,099  2,734

Cost of sales and service revenues

Cost of product sales 1,741  1,451

Cost of service revenues 950  889

Income from operating investments, net 5  13

General and administrative expenses 258  246

Operating income 155  161

Other income (expense)

Interest expense (22) (28)

Non-operating retirement benefit 53  48

Other, net 2  6

Earnings before income taxes 188  187

Federal and foreign income tax expense 39  38

Net earnings $ 149  $ 149

Basic earnings per share $ 3.79  $ 3.79

Weighted-average common shares outstanding 39.3  39.3

Diluted earnings per share $ 3.79  $ 3.79

Weighted-average diluted shares outstanding 39.3  39.3

Dividends declared per share $ 1.38  $ 1.35

Net earnings from above $ 149  $ 149

Other comprehensive income

Change in unamortized benefit plan costs 2  1

Tax expense for items of other comprehensive income (1) —

Other comprehensive income, net of tax 1  1

Comprehensive income $ 150  $ 150

HII

4101 Washington Ave. • Newport News, VA 23607

www.HII.com

Page 7 of 12

HUNTINGTON INGALLS INDUSTRIES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (UNAUDITED)

($ in millions) March 31, 2026 December 31, 2025

Assets

Current Assets

Cash and cash equivalents $ 216  $ 774

Accounts receivable, net of allowance for expected credit losses of $3 million as of 2026 and $2 million as of 2025

406  339

Contract assets 1,989  1,758

Inventoried costs 230  219

Income taxes receivable 278  284

Prepaid expenses and other current assets 98  77

Total current assets 3,217  3,451

Property, Plant, and Equipment, net of accumulated depreciation of $2,799 million as of 2026 and $2,754 million as of 2025

3,742  3,726

Operating lease assets 274  267

Goodwill 2,650  2,650

Other intangible assets, net of accumulated amortization of $1,243 million as of 2026 and $1,222 million as of 2025

673  694

Pension plan assets 1,586  1,544

Miscellaneous other assets 391  417

Total assets $ 12,533  $ 12,749

Liabilities and Stockholders' Equity

Current Liabilities

Trade accounts payable 692  556

Accrued employees’ compensation 345  443

Current portion of postretirement plan liabilities 119  119

Current portion of workers’ compensation liabilities 219  217

Contract liabilities 822  1,220

Other current liabilities 505  490

Total current liabilities 2,702  3,045

Long-term debt 2,701  2,700

Pension plan liabilities 155  155

Other postretirement plan liabilities 195  200

Workers’ compensation liabilities 446  442

Long-term operating lease liabilities 230  223

Deferred tax liabilities 615  572

Other long-term liabilities 342  339

Total liabilities 7,386  7,676

Commitments and Contingencies

Stockholders’ Equity

Common stock, $0.01 par value; 150,000,000 shares authorized; 53,962,478 shares issued and 39,377,769 shares outstanding as of 2026, and 53,826,236 shares issued and 39,241,527 shares outstanding as of 2025

1  1

Additional paid-in capital 2,070  2,087

Retained earnings 5,577  5,487

Treasury stock (2,449) (2,449)

Accumulated other comprehensive loss (52) (53)

Total stockholders’ equity 5,147  5,073

Total liabilities and stockholders’ equity $ 12,533  $ 12,749

HII

4101 Washington Ave. • Newport News, VA 23607

www.HII.com

Page 8 of 12

HUNTINGTON INGALLS INDUSTRIES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

Three Months Ended March 31

($ in millions) 2026 2025

Operating Activities

Net earnings $ 149  $ 149

Adjustments to reconcile net cash used in operating activities:

Depreciation 55  54

Amortization of purchased intangibles 21  25

Stock-based compensation 21  24

Deferred income taxes 43  (11)

Loss (gain) on investments in marketable securities 3  (3)

Other non-cash transactions, net 3  3

Change in

Accounts receivable (67) (175)

Contract assets (231) (334)

Inventoried costs (11) (7)

Prepaid expenses and other assets 7  44

Accounts payable and accruals (338) (126)

Retiree benefits (45) (38)

Net cash used in operating activities (390) (395)

Investing Activities:

Capital expenditures

Capital expenditure additions (74) (67)

Grant proceeds for capital expenditures 3  —

Acquisitions of businesses —  (133)

Proceeds from disposition of assets —  1

Net cash used in investing activities (71) (199)

Financing Activities:

Proceeds from line of credit borrowings 15  —

Repayment of line of credit borrowings (15) —

Dividends paid (54) (53)

Employee taxes on certain share-based payment arrangements (43) (14)

Other financing activities, net —  (3)

Net cash used in financing activities (97) (70)

Change in cash and cash equivalents (558) (664)

Cash and cash equivalents, beginning of period 774  831

Cash and cash equivalents, end of period $ 216  $ 167

Supplemental Cash Flow Disclosure

Cash paid for interest $ 35  $ 8

Non-Cash Investing and Financing Activities

Capital expenditures accrued in accounts payable $ 13  $ 16

HII

4101 Washington Ave. • Newport News, VA 23607

www.HII.com

Page 9 of 12

Exhibit B: Non-GAAP Measures Definitions & Reconciliations

This earnings release contains non-GAAP (accounting principles generally accepted in the United States of America) financial measures as defined by SEC Regulation G and indicated by a footnote in the text of this release. Definitions for the non-GAAP measures, and related reconciliations, are provided below. Because not all companies use identical definitions or calculations, our presentation of these measures may not be comparable to similarly titled measures of other companies.

Segment Operating Income and Segment Operating Margin. We internally manage our operations by reference to segment operating income and segment operating margin and use these measures to evaluate our core operating performance. We believe that segment operating income and segment operating margin reflect additional ways of viewing aspects of our operations that, when viewed with our GAAP results, provide a more complete understanding of factors and trends affecting our business. These measures should be considered in addition to, and not as alternatives for, operating income and operating margin or any other performance measure presented in accordance with GAAP.

Segment operating income is defined as operating income for the relevant segment(s) before the Operating FAS/CAS Adjustment and non-current state income taxes.

Segment operating margin is defined as segment operating income as a percentage of sales and service revenues.

Shipbuilding operating margin, Mission Technologies EBITDA and Mission Technologies EBITDA margin. We use shipbuilding operating margin, Mission Technologies EBITDA and Mission Technologies EBITDA margin to evaluate our core operating performance. We believe these measures reflect additional ways of viewing aspects of our operations that, when viewed with our GAAP results, provide a more complete understanding of factors and trends affecting our business. These measures should be considered in addition to, and not as alternatives for, operating income and operating margin or any other performance measure presented in accordance with GAAP.

Shipbuilding operating margin is defined as the combined segment operating income of our Newport News Shipbuilding segment and Ingalls Shipbuilding segment as a percentage of shipbuilding revenue. Shipbuilding revenue is the sum of revenues of our Newport News Shipbuilding segment and Ingalls Shipbuilding segment.

Mission Technologies EBITDA is defined as Mission Technologies segment operating income before interest expense, income taxes, depreciation, and amortization.

Mission Technologies EBITDA margin is defined as Mission Technologies EBITDA as a percentage of Mission Technologies revenues.

Free cash flow. We use free cash flow as a key operating metric in assessing the performance of our business and as a key performance measure in evaluating management performance and determining incentive compensation. We believe free cash flow is an important measure that may be useful to investors and other users of our financial statements because it provides insight into our current and period-to-period performance and our ability to generate cash from continuing operations. Free cash flow has limitations as an analytical tool and should not be considered in isolation from, or as a substitute for, net income as a measure of our performance or net cash provided by operating activities as a measure of our liquidity.

Free cash flow is defined as net cash provided by (used in) operating activities less capital expenditures net of related grant proceeds.

In reliance upon Item 10(e)(1)(i)(B) of Regulation S-K, reconciliations of forward-looking GAAP and non-GAAP measures are not provided because of the unreasonable effort associated with providing such reconciliations due to the variability in the occurrence and the amounts of certain components of GAAP and non-GAAP measures. For the same reasons, we are unable to address the significance of the unavailable information, which could be material to future results.

HII

4101 Washington Ave. • Newport News, VA 23607

www.HII.com

Page 10 of 12

Reconciliations of Segment Operating Income and Segment Operating Margin

Three Months Ended

March 31

($ in millions) 2026 2025

Ingalls revenues $ 725  $ 637

Newport News revenues 1,665  1,396

Mission Technologies revenues 748  735

Intersegment eliminations (39) (34)

Sales and Service Revenues 3,099  2,734

Operating Income 155  161

Operating FAS/CAS Adjustment 9  10

Non-current state income taxes 8  —

Segment Operating Income 172  171

As a percentage of sales and service revenues 5.6  % 6.3  %

Ingalls segment operating income 49  46

As a percentage of Ingalls revenues 6.8  % 7.2  %

Newport News segment operating income 88  85

As a percentage of Newport News revenues 5.3  % 6.1  %

Mission Technologies segment operating income 35  40

As a percentage of Mission Technologies revenues 4.7  % 5.4  %

Reconciliation of Free Cash Flow

Three Months Ended

March 31

($ in millions) 2026 2025

Net cash used in operating activities $ (390) $ (395)

Less capital expenditures:

Capital expenditure additions (74) (67)

Grant proceeds for capital expenditures 3  —

Free cash flow $ (461) $ (462)

HII

4101 Washington Ave. • Newport News, VA 23607

www.HII.com

Page 11 of 12

Reconciliation of Mission Technologies EBITDA and EBITDA Margin

Three Months Ended

March 31

($ in millions) 2026 2025

Mission Technologies sales and service revenues $ 748  $ 735

Mission Technologies segment operating income $ 35  $ 40

Mission Technologies depreciation expense 3  3

Mission Technologies amortization expense 18  22

Mission Technologies state tax expense 2  2

Mission Technologies EBITDA $ 58  $ 67

Mission Technologies EBITDA margin 7.8  % 9.1  %

HII

4101 Washington Ave. • Newport News, VA 23607

www.HII.com

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hiiq12026earningspresent

Q1 2026 Earnings Call Chris Kastner President and CEO Tom Stiehle EVP and CFO Kari Wilkinson EVP and President, Newport News Shipbuilding May 5, 2026

Q1 2026 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. In some cases, you can identify forward-looking statements by words such as "may," "will," "should," "expects," "intends," "plans," "anticipates," "believes," "estimates," "guidance," "outlook," "predicts," "potential," "continue," and similar words or phrases or the negative of these words or phrases. These statements relate to future events or our future financial performance and involve known and unknown risks, uncertainties, and other factors that may cause our actual results, levels of activity, performance, or achievements to be materially different from any future results, levels of activity, performance, or achievements expressed or implied by these forward-looking statements. Although we believe the expectations reflected in the forward-looking statements are reasonable when made, we cannot guarantee future results, levels of activity, performance, or achievements. There are a number of important factors that could cause our actual results to differ materially from the results anticipated by our forward-looking statements, which include, but are not limited to: our dependence on the U.S. Government for substantially all of our business; significant delays or reductions in appropriations for our programs and/or changes in customer priorities and requirements (including government budgetary constraints, government shutdowns, shifts in defense spending, and changes in customer short-range and long-range plans); our ability to estimate our future contract costs, including cost increases due to inflation, labor challenges, changes in trade policy, or other factors and our efforts to recover or offset such costs and/or changes in estimated contract costs, and perform our contracts effectively; changes in business practices, procurement processes and government regulations, including changes through executive orders, contract terms, or other policies or practices applicable to our industry, and our ability to comply with such requirements; adverse economic conditions in the United States and globally; our level of indebtedness and ability to service our indebtedness; our ability to deliver our products and services at an affordable life cycle cost and compete within our markets; our ability to attract, retain, and train a qualified workforce; subcontractor and supplier performance and the availability and pricing of raw materials and components; our ability to execute our strategic plan, including with respect to share repurchases, dividends, capital expenditures, and strategic acquisitions; investigations, claims, disputes, enforcement actions, litigation (including criminal, civil, and administrative), and/or other legal proceedings, and improper conduct of employees, agents, subcontractors, suppliers, business partners, or joint ventures in which we participate, including the impact on our reputation or ability to do business; changes in key estimates and assumptions regarding our pension and retiree health care costs; security threats, including cybersecurity threats, and related disruptions; natural and environmental disasters and political instability; health epidemics, pandemics and similar outbreaks; and other risk factors discussed herein and in our other filings with the SEC. There may be other risks and uncertainties that we are unable to predict at this time or that we currently do not expect to have a material adverse effect on our business, and we undertake no obligation to update or revise any forward-looking statements. You should not place undue reliance on any forward-looking statements that we may make. 2

Q1 2026 EARNINGS 1 The financial outlook, expectations and other forward looking statements provided by the company for 2026 and beyond reflect the company's judgment based on the information available at the time of this presentation. Please see the "Forward-looking Statements" section in this presentation and our Form 10-Q for factors that may impact the company's ability to meet expectations. 2 Non-GAAP measure. See appendix for definition and reconciliation. 3 HII INVESTMENT THESIS Largest U.S. military seapower provider with leading all-domain, integrated defense technologies Margin expansion opportunity driven by operational execution and new post-COVID contracts Free cash flow2 growth enabling disciplined capital allocation and increasing total shareholder value Working through the majority of challenged pre-COVID contracts, focused on enhancing throughput and reducing cost – Top priority to get these ships delivered to the Navy Expect significant contract awards that establish balanced risk equation and have margins more consistent with historical norms Over the course of 2026 & 2027: Medium Term Opportunity1: Top line CAGR of ~6%; $16B+ enterprise revenue by 2030

Q1 2026 EARNINGS Enhancing Shipbuilding Throughput » Throughput improvement target of 15% YoY » Building on ~14% improvement achieved in 2025 » Multiple workforce improvement initiatives » Continue to expand new Charleston facility » Utilize contract labor to address critical gaps Rapidly Growing Trusted Industrial Base Network » Building on significant momentum » Doubled outsourced hours in 2025 » Continue to rapidly grow outsourced hours in 2026 New Contract Awards » Ensuring contract awards reflect current operating environment 2026 Operational Initiatives Update 4 Pursuing Multiple Throughput and Growth Drivers » Achieved 18% YoY throughput improvement in Q1 2026 » Collective bargaining agreement with meaningful wage enhancements ratified at Ingalls Shipbuilding » Newport News and Ingalls Shipbuilding apprentice schools collectively graduated ~200 future shipbuilding leaders

Q1 2026 EARNINGS HII Q1 2026 Revenue 6.1% 9.8% 3.7% Three Months Ended March 31 ($M) 2025 2026 % Change Ingalls Shipbuilding 637 725 13.8% Newport News Shipbuilding 1,396 1,665 19.3% Mission Technologies 735 748 1.8% Eliminations (34) (39) - Total 2,734 3,099 13.4% YoY variance driven primarily by higher aircraft carrier, submarine and naval nuclear support services volume at Newport News Shipbuilding, and higher surface combatant volume at Ingalls Shipbuilding. 5 $2,734 $3,099 Q125 Q126 CONSOLIDATED REVENUE ($M)

Q1 2026 EARNINGS HII Q1 2026 Segment Operating Income1 6.1% 9.8% 3.7% Three Months Ended March 31 ($M) 2025 2026 % Change Ingalls Shipbuilding 46 49 6.5% Newport News Shipbuilding 85 88 3.5% Mission Technologies 40 35 (12.5)% Total 171 172 0.6% Ingalls Segment Operating Income growth was driven by higher surface combatant volumes, partially offset by amphibious assault ship performance. Newport News Segment Operating Income growth was driven by higher volumes, partially offset by contract adjustments and incentives received in Q125, as well as aircraft carrier performance. Mission Technologies Operating Income declined due to lower equity income from nuclear and environmental joint ventures. 61 Non-GAAP measure. See appendix for definition and reconciliation. $171 $172 Q125 Q126 SEGMENT OPERATING INCOME1 ($M) & MARGIN1% 5.6%6.3% SEGMENT OPERATING INCOME1 ($M) & MARGIN1%

Q1 2026 EARNINGS ($395) ($390) ($67) ($71) ($462) ($461)($500) ($400) ($300) ($200) ($100) $0 Cash Used In Ops. CAPEX Free Cash Flow HII Q1 2026 Capital Deployment 1 Non-GAAP measure. See appendix for definition and reconciliation. 7 FREE CASH FLOW1 ($M) Q126Q125 1 • Cash balance of $216 million and liquidity of $1.9 billion at quarter end • Net capital expenditures of $71 million were 2.3% of revenues in Q1 2026 • Q1 2026 dividend totaled $54 million • Did not repurchase shares in the quarter

Q1 2026 EARNINGS HII Outlook1 FY26 OUTLOOK1 1 The financial outlook, expectations and other forward looking statements provided by the company for 2026 and beyond reflect the company's judgment based on the information available at the time of this presentation. Please see the "Forward-looking Statements" section in this presentation and our Form 10-Q for factors that may impact the company's ability to meet expectations. 2 Medium term growth represents our expected compounded annual growth rate over the next three to five years. 3 Non-GAAP measures. See appendix for definitions. In reliance upon Item 10(e)(1)(i)(B) of Regulation S-K, reconciliations of forward–looking GAAP and non–GAAP measures are not provided because of the unreasonable effort associated with providing such reconciliations due to the variability in the occurrence and the amounts of certain components of GAAP and non-GAAP measures. For the same reasons, we are unable to address the significance of the unavailable information, which could be material to future results. 4 Outlook is based on current tax law. Variability exists based on how and when individual states conform to recent federal tax law changes. 8 FY26 Outlook1 Shipbuilding Revenue $9.7B - $9.9B Shipbuilding Operating Margin3 5.5% - 6.5% Mission Technologies Revenue $3.0B - $3.2B Mission Technologies Segment Operating Margin ~5% Mission Technologies EBITDA Margin3 8.4% - 8.6% Operating FAS/CAS Adjustment ($44M) Non-current State Income Tax Expense4 ~($20M) Interest Expense ($105M) Non-operating Retirement Benefit $213M Effective Tax Rate ~17% Depreciation & Amortization ~$330M Capital Expenditures 4%-5% of Sales Free Cash Flow3 $500M - $600M HII Medium Term2 Revenue Growth of ~6% • Shipbuilding medium term2 revenue growth of ~6% • Additional upside from recently announced frigate and battleship • Mission Technologies medium term2 revenue growth of ~5% 2026 Expectations • Shipbuilding revenue of $9.7B to $9.9B • Shipbuilding operating margin3 of 5.5% to 6.5% • Includes throughput and contract award assumptions • Mission Technologies revenue of $3.0B to $3.2B • Mission Technologies operating margin of 4% to 5% Q2 2026 Look Ahead • Shipbuilding revenue of ~$2.4B, op. margin3 of 5.7% to 6.0% • Mission Technologies revenue of ~$750M, op. margin of ~4% • Free cash flow3 of ($100M) to $100M • Effective tax rate of ~21%

Q1 2026 EARNINGS Appendix 9

Q1 2026 EARNINGS Non-GAAP Information This earnings presentation contains non-GAAP (accounting principles generally accepted in the United States of America) financial measures as defined by SEC Regulation G and indicated by a footnote in the text of this presentation. Definitions for the non-GAAP measures, and related reconciliations, are provided below. Because not all companies use identical definitions or calculations, our presentation of these measures may not be comparable to similarly titled measures of other companies. Segment Operating Income and Segment Operating Margin. We internally manage our operations by reference to segment operating income and segment operating margin and use these measures to evaluate our core operating performance. We believe that segment operating income and segment operating margin reflect additional ways of viewing aspects of our operations that, when viewed with our GAAP results, provide a more complete understanding of factors and trends affecting our business. These measures should be considered in addition to, and not as alternatives for, operating income and operating margin or any other performance measure presented in accordance with GAAP. Segment operating income is defined as operating income for the relevant segment(s) before the Operating FAS/CAS Adjustment and non-current state income taxes. Segment operating margin is defined as segment operating income as a percentage of sales and service revenues. Shipbuilding operating margin, Mission Technologies EBITDA and Mission Technologies EBITDA margin. We use shipbuilding operating margin, Mission Technologies EBITDA and Mission Technologies EBITDA margin to evaluate our core operating performance. We believe these measures reflect additional ways of viewing aspects of our operations that, when viewed with our GAAP results, provide a more complete understanding of factors and trends affecting our business. These measures should be considered in addition to, and not as alternatives for, operating income and operating margin or any other performance measure presented in accordance with GAAP. Shipbuilding operating margin is defined as the combined segment operating income of our Newport News Shipbuilding segment and Ingalls Shipbuilding segment as a percentage of shipbuilding revenue. Shipbuilding revenue is the sum of revenues of our Newport News Shipbuilding segment and Ingalls Shipbuilding segment. Mission Technologies EBITDA is defined as Mission Technologies segment operating income before interest expense, income taxes, depreciation, and amortization. Mission Technologies EBITDA margin is defined as Mission Technologies EBITDA as a percentage of Mission Technologies revenues. Free cash flow. We use free cash flow as a key operating metric in assessing the performance of our business and as a key performance measure in evaluating management performance and determining incentive compensation. We believe free cash flow is an important measure that may be useful to investors and other users of our financial statements because it provides insight into our current and period-to- period performance and our ability to generate cash from continuing operations. Free cash flow has limitations as an analytical tool and should not be considered in isolation from, or as a substitute for, net income as a measure of our performance or net cash provided by operating activities as a measure of our liquidity. Free cash flow is defined as net cash provided by (used in) operating activities less capital expenditures net of related grant proceeds. In reliance upon Item 10(e)(1)(i)(B) of Regulation S-K, reconciliations of forward-looking GAAP and non-GAAP measures are not provided because of the unreasonable effort associated with providing such reconciliations due to the variability in the occurrence and the amounts of certain components of GAAP and non-GAAP measures. For the same reasons, we are unable to address the significance of the unavailable information, which could be material to future results. 10

Q1 2026 EARNINGS Non-GAAP Reconciliations Segment Operating Income & Segment Operating Margin 11 ($ in millions) 2026 2025 Ingalls revenues 725 637 Newport News revenues 1,665 1,396 Mission Technologies revenues 748 735 Intersegment eliminations (39) (34) Sales and Service Revenues 3,099 2,734 Operating Income 155 161 Operating FAS/CAS Adjustment 9 10 Non-current state income taxes 8 — Segment Operating Income 172 171 As a percentage of sales and service revenues 5.6 % 6.3 % Ingalls segment operating income 49 46 As a percentage of Ingalls revenues 6.8 % 7.2 % Newport News segment operating income 88 85 As a percentage of Newport News revenues 5.3 % 6.1 % Mission Technologies segment operating income 35 40 As a percentage of Mission Technologies revenues 4.7 % 5.4 % March 31 Three Months Ended

Q1 2026 EARNINGS Non-GAAP Reconciliations Shipbuilding Operating Margin 12 ($ in millions) 2026 2025 Sales and service revenues 3,099 2,734 Mission Technologies (748) (735) Intersegment eliminations 39 34 Shipbuilding Revenues 2,390 2,033 Operating Income 155 161 Operating FAS/CAS Adjustment 9 10 Non-current state income taxes 8 — Segment Operating Income 172 171 Mission Technologies operating income (35) (40) Shipbuilding operating income 137 131 As a percentage of shipbuilding revenues 5.7 % 6.4 % March 31 Three Months Ended

Q1 2026 EARNINGS Non-GAAP Reconciliations Free Cash Flow 13 ($ in millions) 2026 2025 Net cash used in operating activities (390) (395) Less capital expenditures: Capital expenditure additions (74) (67) Grant proceeds for capital expenditures 3 — Free cash flow (461) (462) March 31 Three Months Ended

Q1 2026 EARNINGS Non-GAAP Reconciliations Mission Technologies EBITDA & EBITDA Margin 14 ($ in millions) 2026 2025 Mission Technologies sales and service revenues 748 735 Mission Technologies segment operating income 35 40 Mission Technologies depreciation expense 3 3 Mission Technologies amortization expense 18 22 Mission Technologies state tax expense 2 2 Mission Technologies EBITDA 58 67 Mission Technologies EBITDA margin 7.8 % 9.1 % March 31 Three Months Ended

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