NORTHROP GRUMMAN CORP /DE/

For purposes of the operating results discussion below, we assess our performance using certain financial measures that are not calculated in accordance with GAAP. Organic sales is defined as total sales excluding sales attributable to the company's former training services business. This measure may be useful to investors and other users of our financial statements as a supplemental measure in evaluating the company’s underlying sales growth as well as in understanding our ongoing business and future sales trends by presenting the company’s sales adjusted for the impact of the divestiture.

We reconcile this non-GAAP financial measure to its most directly comparable GAAP financial measure below. This non-GAAP measure may not be defined and calculated by other companies in the same manner and should not be considered in isolation or as an alternative to operating results presented in accordance with GAAP.

Selected financial highlights are presented in the table below:

-25-

Sales

The table below reconciles sales to organic sales:

Third quarter 2025 sales increased $427 million, or 4 percent, primarily driven by higher sales at Mission Systems, Defense Systems and Aeronautics Systems, partially offset by lower sales at Space Systems due, in part, to the wind-down of work on certain Space programs, as discussed in our segment operating results below.

Year to date 2025 sales were comparable with the prior year period and reflect higher sales at Mission Systems and Defense Systems, partially offset by lower sales at Space Systems due, in part, to the wind-down of work on certain Space programs.

See “Segment Operating Results” below for further information by segment and “Product and Service Analysis” for product and service detail. See Note 10 to the financial statements for information regarding the company’s sales by customer type, contract type and geographic region for each of our segments.

Operating Income and Margin Rate

Third quarter 2025 operating income increased $122 million, or 11 percent, primarily due to a $131 million increase in segment operating income. Operating margin rate increased to 11.9 percent from 11.2 percent principally due to a higher segment operating margin rate.

Third quarter 2025 general and administrative (G&A) costs as a percentage of sales decreased to 9.5 percent from 9.9 percent in the prior year period primarily due to higher sales.

Year to date 2025 operating income decreased $41 million, or 1 percent, due to a $287 million decrease in segment operating income, primarily driven by a $477 million loss provision recorded on the B-21 program at Aeronautics Systems in the first quarter of 2025, and a $128 million increase in non-divestiture-related unallocated corporate expense. These decreases were partially offset by higher operating income due to a $231 million pre-tax gain on sale for the training services divestiture and a $161 million increase in the FAS/CAS operating adjustment. Operating margin rate declined to 10.7 percent from 10.8 percent reflecting the items above.

Year to date 2025 G&A costs as a percentage of sales decreased to 9.9 percent from 10.4 percent in the prior year period primarily due to cost management.

See “Segment Operating Results” below for further information by segment. For information regarding product and service operating costs and expenses, see “Product and Service Analysis” below.

Federal and Foreign Income Taxes

On July 4, 2025, the One Big Beautiful Bill Act (OBBBA) was enacted. Key income tax-related provisions of the OBBBA include the repeal of mandatory capitalization of research and development expenditures under IRC Section 174 (reinstating full expensing beginning in 2025), extension of bonus depreciation, and revisions to international tax regimes. The company recognized the income tax effects of the OBBBA in its third quarter 2025 financial statements.

Third quarter 2025 income tax expense increased $61 million, or 38 percent, due to a higher ETR and higher earnings before income taxes. The third quarter 2025 ETR increased to 16.9 percent from 13.6 percent primarily due to the prior year ETR reflecting a net reduction in tax reserves largely due to a federal court decision in 2024 as well as a reduction in research credits in the current year due to enactment of the OBBBA, partially offset by lower interest expense on unrecognized tax benefits.

-26-

Year to date 2025 income tax expense increased $18 million, or 3 percent, due to a higher ETR, which more than offset lower earnings before income taxes. The year to date 2025 ETR increased to 17.2 percent from 16.0 percent primarily due to the prior year ETR reflecting a net reduction in tax reserves largely due to a federal court decision in 2024 as well as additional income tax expense in the current year related to nondeductible goodwill in the divested training services business, partially offset by lower interest expense on unrecognized tax benefits.

See Note 4 to the financial statements for additional information.

Net Earnings

Third quarter 2025 net earnings increased $74 million, or 7 percent, primarily due to the $122 million increase in operating income described above as well as a $62 million increase in returns on marketable securities, partially offset by a $61 million increase in income tax expense and a $32 million reduction in the non-operating FAS pension benefit.

Year to date 2025 net earnings decreased $155 million, or 5 percent, primarily due to a $100 million reduction in the non-operating FAS pension benefit, lower interest income on short-term investments, and the $41 million decrease in operating income described above, partially offset by a $78 million increase in returns on marketable securities.

Diluted Earnings Per Share

Third quarter 2025 diluted earnings per share increased 10 percent, reflecting a 7 percent increase in net earnings and a 2 percent reduction in weighted-average diluted shares outstanding.

Year to date 2025 diluted earnings per share decreased 3 percent, reflecting a 5 percent decrease in net earnings and a 3 percent reduction in weighted-average diluted shares outstanding.