Company: NOC
Filing Date: 2025-05-27
Form Type: 424B5
Source: 0001193125-25-126289
Chunk: 51

Company: NORTHROP GRUMMAN CORP /DE/
Filing Date: 2025-05-27
Form: 424B5
Chunk 51
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 secured by the principal property at least equal in amount to the attributable debt with respect to the transaction, or the greater of the net proceeds of the sale or the attributable debt with respect to the transaction is used to prepay our long-term debt or the long-term debt of any restricted subsidiary (other than debt owed to us or another restricted subsidiary). Sale-leaseback transaction means, subject to some exceptions, an arrangement pursuant to which we, or a restricted subsidiary, transfers a principal property to a person and leases it back from 8

that person. Attributable debt for a sale-leaseback transaction means the lesser of the fair market value of the property, as determined by our board of directors, or the present value of the obligation of the lessee for net rental payments during the remaining term of the lease. (Section 1010) The indenture will not otherwise limit our ability to incur additional debt, except as otherwise described in a prospectus supplement. Certain Other Covenants The indenture contains certain other covenants, including among other things, maintenance of corporate existence and other properties and payment of taxes. Consolidation, Merger or Sale Under the indenture, we may not consolidate with or merge into another entity, transfer our assets substantially as an entirety to another entity, permit any entity to consolidate with or merge into us, or acquire the assets substantially as an entirety of another entity, unless:

| • |     | the successor entity is a U.S. entity that is a corporation, limited liability company, partnership or trust and 
 assumes all of our obligations, as applicable, under the outstanding debt securities and the indenture;          |

| • |     | immediately following the transaction, no event of default and no event that, after notice or lapse of time or 
 both, would become an event of default, has occurred and is continuing; and                                    |

| • |     | an officers’ certificate and a legal opinion have been delivered to the trustee confirming that the 
 transaction is being effected in compliance with the indenture. (Section 801)                       |

Defeasance and Covenant Defeasance Any series of issued debt securities may be subject to the defeasance and discharge provisions of the indenture. Under those provisions, the debt securities of any series may authorize us to elect:

| • |     | to defease and to discharge us from any and all of our obligations with respect to those debt securities, except                                                                                                                                 
 for the rights of holders of those debt securities to receive payments on the