Company: NOC
Filing Date: 2025-05-28
Form Type: 424B5
Source: 0001193125-25-129530
Chunk: 58

Company: NORTHROP GRUMMAN CORP /DE/
Filing Date: 2025-05-28
Form: 424B5
Chunk 58
---
 effecting syndicate covering transactions or imposing penalty bids, each of which is described below.

| • |     | A stabilizing bid means the placing of any bid, or the effecting of any purchase, for the purpose of pegging, 
 fixing or maintaining the price of a security.                                                                |

| • |     | A syndicate covering transaction means the placing of any bid on behalf of the underwriting syndicate or the 
 effecting of any purchase to reduce a short position created in connection with the offering.                |

| • |     | A penalty bid means an arrangement that permits the managing underwriter to reclaim a selling concession from a                                                    
 syndicate member in connection with the offering when offered securities originally sold by the syndicate member are purchased in syndicate covering transactions. |

These transactions may be effected on the NYSE, in the over-the-countermarket, or otherwise. Underwriters are not required to engage in any of these activities, or to continue such activities if commenced. 12

If a dealer is used in the sale, we will sell such offered securities to the dealer, as principal. The dealer may then resell the offered securities to the public at varying prices to be determined by that dealer at the time for resale. The names of the dealers and the terms of the transaction will be set forth in the prospectus supplement relating to that transaction. Offered securities may be sold directly by us to one or more institutional purchasers, or through agents designated by us from time to time, at a fixed price or prices, which may be changed, or at varying prices determined at the time of sale. Any agent involved in the offer or sale of the offered securities in respect of which this prospectus is delivered will be named, and any commission payable by us to such agent will be set forth, in the prospectus supplement relating to that offering. Unless otherwise indicated in such prospectus supplement, any such agent will be acting on a best efforts basis for the period of its appointment. If we offer securities in a subscription rights offering to our existing security holders, we may enter into a standby underwriting agreement with dealers, acting as standby underwriters. We may pay the standby underwriters a commitment fee for the securities they commit to purchase on a standby basis. If we do not enter into a standby underwriting arrangement, we may retain a dealer-manager to manage a subscription rights offering for us. Remarketing firms, underwriters, dealers, agents and other persons may be entitled under agreements entered into with us to indemnification by