NORTHROP GRUMMAN CORP /DE/

Basis of Presentation

The company is aligned in four operating sectors, which also comprise our reportable segments: Aeronautics Systems, Defense Systems, Mission Systems and Space Systems.

Effective January 1, 2025, the company realigned the Strike and Surveillance Aircraft Solutions (SSAS) business unit from Defense Systems to Aeronautics Systems. This realignment is reflected in the financial information contained in this report.

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For a more complete description of each segment’s products and services, see “Business.”

Segment Operating Income and Margin Rate

Segment operating income, as reconciled in the table below, and segment operating margin rate (segment operating income divided by sales) are non-GAAP measures that reflect the combined operating income of our four segments less the operating income associated with intersegment sales. Segment operating income includes pension expense allocated to our sectors under FAR and CAS and excludes FAS pension service expense and unallocated corporate items (certain corporate-level expenses, which are not considered allowable or allocable under applicable FAR and CAS requirements, and costs not considered part of management’s evaluation of segment operating performance). These non-GAAP measures may be useful to investors and other users of our financial statements as supplemental measures in evaluating the financial performance and operational trends of our sectors. These measures may not be defined and calculated by other companies in the same manner and should not be considered in isolation or as alternatives to operating results presented in accordance with GAAP.

(1)Represents the deferred state tax expense (benefit) associated with MTM benefit (expense) and the B-21 loss provisions, which are recorded in Unallocated corporate expense consistent with other changes in deferred state taxes.

Segment Operating Income and Margin Rate

2025 segment operating income decreased $167 million, or 4 percent, primarily due to $423 million of lower operating income at Aeronautics Systems reflecting the first quarter B-21 loss provision and $71 million of lower operating income at Space Systems, partially offset by higher operating income of $229 million at Mission Systems and $155 million at Defense Systems. Segment operating margin rate decreased to 10.4 percent primarily due to the B-21 loss provision at Aeronautics Systems, partially offset by higher operating margin rates at Defense Systems, Mission Systems and Space Systems.

FAS/CAS Operating Adjustment

The 2025 FAS/CAS operating adjustment reflects higher CAS pension expense largely driven by plan asset returns in prior years and changes in certain CAS actuarial assumptions as of December 31, 2024.

Unallocated Corporate Expense

The decrease in 2025 unallocated corporate expense is primarily due to a $231 million gain on the sale of our training services business. Non-divestiture-related unallocated corporate expense increased primarily due to higher deferred state tax expense largely related to the repeal of mandatory capitalization of research and development expenditures under IRC Section 174.

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Net EAC Adjustments -We record changes in estimated contract earnings at completion (net EAC adjustments) using the cumulative catch-up method of accounting. Net EAC adjustments can have a significant effect on reported sales, operating income and margin rate.

The aggregate favorable and unfavorable EAC adjustments are presented in the table below:

Net EAC adjustments by segment are presented in the table below:

AERONAUTICS SYSTEMS

Aeronautics Systems is a leader in the design, development, production, integration, sustainment and modernization of military aircraft systems for the U.S. Air Force, the U.S. Navy, other U.S. government agencies, and international customers. Major products include strategic long-range strike aircraft; tactical fighter and air dominance aircraft; airborne battle management and command and control systems; and uncrewed autonomous aircraft systems, including high-altitude long-endurance (HALE) strategic intelligence, surveillance and reconnaissance (ISR) systems.

Sales

2025 sales increased $596 million, or 5 percent, primarily due to a $385 million increase on F-35 largely driven by material volume, a $379 million increase on TACAMO as that program ramps, and higher volume on the E-2 and B-21 programs. These increases were partially offset by lower sales on other restricted programs and a $106 million decrease on F/A-18 as final production deliveries were completed.

2025 operating income decreased $423 million and operating margin rate decreased to 6.3 percent primarily due to a $477 million loss provision recorded on the LRIP phase of the B-21 program in the first quarter of 2025. This was partially offset by higher net EAC adjustments across the portfolio.

DEFENSE SYSTEMS

Defense Systems is a leader in the design, engineering, development, integration and production of strategic deterrent systems, advanced tactical weapons, and missile defense solutions for the U.S. military and a broad range of international customers. Major products and services include strategic missiles; integrated, all-domain command and control (C2) systems; precision strike weapons; advanced propulsion, including tactical solid rocket motors and high speed air-breathing and hypersonic systems; high-performance gun systems, ammunition, precision munitions and advanced fuzes; and weapons integration, modernization, and sustainment.

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Sales

2025 sales increased $603 million, or 8 percent, primarily due to a $224 million increase on Sentinel as that program continues to ramp, a $185 million increase on armament programs, including military ammunition programs, a $153 million increase in sales from new awards across the IBCS program portfolio, and higher volume due to material timing on the GMLRS program. These increases were partially offset by a $192 million reduction in sales related to the divested training services business.

2025 operating income increased $155 million, or 22 percent, due to a higher operating margin rate and higher sales. Operating margin rate increased to 10.9 percent from 9.7 percent primarily due to higher net EAC adjustments, including a $76 million favorable EAC adjustment on the Sentinel program during the second quarter of 2025.

MISSION SYSTEMS

Mission Systems is a leader in advanced mission solutions and multifunction systems, primarily for the U.S. defense and intelligence community, and international customers. Major products and services include radar, electro-optical/infrared (EO/IR) and acoustic sensors; command, control, communications and computers, intelligence, surveillance and reconnaissance (C4ISR) systems; electronic warfare systems; advanced communications and network systems; advanced microelectronics; navigation and positioning sensors; maritime power, propulsion and payload launch systems; full spectrum cyber solutions; and intelligence processing systems.

Sales

2025 sales increased $1.1 billion, or 10 percent, primarily due to continued ramp-up on restricted airborne radar programs, as well as higher sales of $161 million on marine systems programs, $141 million on international ground-based radar programs and $105 million on communications programs, as several programs ramp up following new awards.

2025 operating income increased $229 million, or 14 percent, due to higher sales and a higher operating margin rate. Operating margin rate increased to 14.6 percent from 14.0 percent primarily due to higher net EAC adjustments, including a $68 million favorable EAC adjustment recorded in the third quarter of 2025 in the restricted advanced microelectronics portfolio, partially offset by investments made by the sector in connection with restricted business opportunities during the first quarter of 2025.

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SPACE SYSTEMS

Space Systems is a leader in delivering end-to-end mission solutions through the design, development, integration, production and operation of space, missile defense, and launch systems for national security, civil government, commercial and international customers. Major products include satellites and spacecraft systems, subsystems, sensors and payloads; ground systems; missile defense systems and interceptors; and launch vehicles and related propulsion systems.

Sales

2025 sales decreased $960 million, or 8 percent, primarily due to wind-down of work on the restricted space and NGI programs, which reduced sales by $738 million, as well as a $172 million decrease for the SDA satellite programs due to the timing of materials and a $102 million decrease driven by lower volume on the SLS Booster program. These decreases were partially offset by a $168 million increase on GEM 63 and higher volume on HALO as those programs continue to ramp.

2025 operating income decreased $71 million, or 6 percent, due to lower sales, partially offset by a higher operating margin rate. Operating margin rate increased to 11.0 percent from 10.7 percent principally due to more favorable contract mix.

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