Company: NOC
Filing Date: 2025-05-28
Form Type: 424B5
Source: 0001193125-25-129530
Chunk: 53

Company: NORTHROP GRUMMAN CORP /DE/
Filing Date: 2025-05-28
Form: 424B5
Chunk 53
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 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 securities solely from the trust fund established pursuant to the indenture and the obligations to exchange or register the transfer of the securities, to replace 
 temporary or mutilated, destroyed, lost or stolen securities, to maintain an office or agency with respect to the securities and to hold moneys for payment in trust, which we refer to as a defeasance; or                                      |

| • |     | to be released from our obligations with respect to those debt securities to comply with the restrictive                                                                                                                                               
 covenants which are subject to covenant defeasance, and the occurrence of certain events of default with respect to those restrictive covenants shall no longer be an event of default, which we refer to as a covenant defeasance. (Sections 1302 and 
 1303)                                                                                                                                                                                                                                                  |

To invoke defeasance or covenant defeasance with respect to any series of debt securities, we must irrevocably deposit with a trustee, in trust, money or U.S. Government obligations, or both, which will provide money in an amount sufficient to pay all sums due on that series. (Section 1304) As a condition to defeasance or covenant defeasance, we must deliver to the trustee an opinion of counsel stating that holders of the applicable debt securities will not recognize gain or loss for federal income tax purposes as a result of the defeasance or covenant defeasance and will be subject to federal income tax on the same amounts, in the same manner and at the same times as would have been the case if we did not elect the defeasance or covenant defeasance. We may exercise our defeasance option with respect to the securities notwithstanding our prior exercise of our covenant defeasance option