FALLS CHURCH, Va. – May 28, 2013 – Northrop Grumman Corporation (NYSE:NOC) announced today that it has priced a $2.85 billion underwritten public offering of senior unsecured notes. The notes include:

$850 million of 1.75% senior notes due June 1, 2018

$1,050 million of 3.25% senior notes due August 1, 2023

$950 million of 4.75% senior notes due June 1, 2043

Northrop Grumman expects to use the net proceeds from the offering to fund the redemption of its then outstanding 3.70% senior notes due 2014 (the "2014 Notes") and its then outstanding 1.850% senior notes due 2015 (the "2015 Notes") and for general corporate purposes, including debt repayment, share repurchases, pension plan funding, acquisitions and working capital. As of the date of this press release, $350 million aggregate principal amount of the 2014 Notes and $500 million aggregate principal amount of the 2015 Notes were outstanding.

The offering is expected to close on May 31, 2013, subject to customary closing conditions. When available, copies of the prospectus supplement and the accompanying base prospectus related to the offering may be obtained by calling Citigroup Global Markets Inc. toll free at (800) 831-9146, J.P. Morgan Securities LLC collect at (212) 834-4533, RBS Securities Inc. toll free at (866) 884-2071 and Wells Fargo Securities, LLC toll free at (800) 326-5897. A copy of these documents may also be obtained by visiting EDGAR on the SEC website at www.sec.gov .

This press release shall not constitute an offer to sell or the solicitation of an offer to buy the securities described herein, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such jurisdiction.

The securities are being offered pursuant to an effective shelf registration statement previously filed with the Securities and Exchange Commission, and a prospectus supplement and accompanying prospectus filed with the Securities and Exchange Commission as part of the shelf registration statement.

Northrop Grumman is a leading global security company providing innovative systems, products and solutions in unmanned systems, cyber, C4ISR, and logistics and modernization to government and commercial customers worldwide. Please visit www.northropgrumman.com for more information.

Note: Statements in this press release, other than statements of historical fact, constitute "forward-looking" information within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as "anticipate," "expect," "intend," "plan," "believe," "estimate," "guidance," "goal" and similar expressions generally identify these forward-looking statements. These forward-looking statements speak only as of the date when made, and the Company undertakes no obligation to update or revise any forward-looking statements after the date of this press release. Forward-looking statements are not guarantees of future performance and inherently involve a wide range of risks and uncertainties that are difficult to predict. Actual results may differ materially from those described or implied in these statements based on a number of factors, including global economic conditions, economic conditions in our industry, government fiscal and budget policies, changes in interest rates and other market conditions. A discussion of these risks and uncertainties is contained in the Company's 2012 Annual Report on Form 10-K and the company's other filings with the Securities and Exchange Commission.

  CONTACT: Randy Belote (Media)
         Steve Movius (Investors)