Company: NOC
Filing Date: 2025-05-27
Form Type: 424B5
Source: 0001193125-25-126289
Chunk: 11

Company: NORTHROP GRUMMAN CORP /DE/
Filing Date: 2025-05-27
Form: 424B5
Chunk 11
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 senior notes due 2026), share repurchases and working capital.

S-10

Description of notes

The following description of the notes offered by this prospectus supplement is intended to supplement and to the extent inconsistent to replace, the more general terms and provisions of the senior debt securities described in the accompanying prospectus, to which we refer you. This description of the notes is only a summary and may not include all the information that is important to you. You should read the indenture we refer to below and the notes for more details regarding our obligations and your rights with respect to the notes.

For purposes of this section entitled “Description of notes,” references to “we,” “our,” “us” or similar references are to Northrop Grumman only, and not to any of its subsidiaries.

General

We will issue our % Senior Notes due
20 (the “20 notes”) and % Senior Notes due 20 (the “20 notes”) under the indenture, dated as of November 21, 2001 (the “base indenture”), by and between Northrop Grumman and The
Bank of New York Mellon, as successor to JPMorgan Chase Bank, as trustee, as supplemented by the first supplemental indenture, dated as of July 30, 2009, the third supplemental indenture dated as of March 30, 2011, the fourth supplemental
indenture, dated as of March 30, 2011, and a thirteenth supplemental indenture to be entered into between Northrop Grumman and the trustee (the supplemental indentures, together with the base indenture, the “indenture”).

The notes will be issued in separate series of securities under the indenture in an initial aggregate principal amount of
$ , consisting of an initial aggregate principal amount of $ of the 20 notes and an initial aggregate principal amount of $ of the 20 notes.

Payment of the full principal amount of the 20 notes will be due on , 20 , and payment of the full principal amount
of the 20 notes will be due on , 20 , in each case unless the notes are redeemed in whole or in part as described below under “—Optional redemption.”

The 20 notes will bear interest at the rate of % per annum, and the 20 notes will bear interest at the rate of % per annum. We
will pay interest on the 20 notes and the 20 notes semi-annually in arrears on and of each year,