Company: NOC
Filing Date: 2025-05-28
Form Type: 424B5
Source: 0001193125-25-129530
Chunk: 57

Company: NORTHROP GRUMMAN CORP /DE/
Filing Date: 2025-05-28
Form: 424B5
Chunk 57
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 as a dividend or distribution or in a subscription rights offering to our existing security holders. This prospectus may be used in connection with any offering of our securities through any of these methods or other methods described in the applicable prospectus supplement. We may effect the distribution of the securities from time to time in one or more transactions either:

| • |     | at a fixed price or prices which may be changed from time to time; |

| • |     | at market prices prevailing at the time of sale; |

| • |     | at prices relating to such prevailing market prices; or |

| • |     | at negotiated prices. |

Each prospectus supplement will describe the method of distribution of the securities and any applicable restrictions. The prospectus supplement relating to an offering of offered securities will set forth the terms of such offering, including:

| • |     | the name or names of any underwriters, dealers or agents; |

| • |     | the purchase price of the offered securities and the proceeds we will receive from the sale; |

| • |     | any underwriting discounts and commissions or agency fees and other items constituting underwriters’ or 
 agents’ compensation; and                                                                               |

| • |     | any initial public offering price, any discounts or concessions allowed or reallowed or paid to dealers and any 
 securities exchanges on which such offered securities may be listed.                                            |

Any initial public offering prices, discounts or concessions allowed or reallowed or paid to dealers may be changed from time to time. If underwriters are used in the sale, the underwriters will acquire the offered securities for their own account and may resell them from time to time in one or more transactions, including negotiated transactions, at a fixed public offering price or at varying prices determined at the time of sale. The offered securities may be offered either to the public through underwriting syndicates represented by one or more managing underwriters or by one or more underwriters without a syndicate. Unless otherwise set forth in a prospectus supplement, the obligations of the underwriters to purchase any series of securities will be subject to certain conditions precedent, and the underwriters will be obligated to purchase all of such series of securities, if any are purchased. In connection with underwritten offerings of the offered securities and in accordance with applicable law and industry practice, underwriters may over-allot or effect transactions that stabilize, maintain or otherwise affect the market price of the offered securities at levels above those that might otherwise prevail in the open market, including by entering stabilizing bids,