FALLS CHURCH, Va. – Nov. 29, 2017 – Northrop Grumman Corporation (NYSE: NOC) is pleased that the shareholders of Orbital ATK (NYSE: OA) have approved the company’s proposed acquisition of Orbital ATK.

“We are delighted to see that Orbital ATK’s shareholders have approved the proposed acquisition,” said Wes Bush, chairman, chief executive officer and president, Northrop Grumman.“Bringing together these two great companies will benefit our customers, shareholders and employees.The combination will provide increased competition, greater innovation and a broader set of capabilities, to help our customers solve their toughest challenges.”

Northrop Grumman continues to expect the acquisition to close in the first half of 2018, after receiving regulatory approvals.

Northrop Grumman is a leading global security company providing innovative systems, products and solutions in autonomous systems, cyber, C4ISR, strike, and logistics and modernization to customers worldwide. Please visit news.northropgrumman.com and follow us on Twitter, @NGCNews, 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 “will,” “anticipate,” “expect,” “intend,” “plan,” “believe,” “estimate,” and similar expressions generally identify these forward-looking statements. Forward-looking statements include, among other things, statements regarding the benefits and implications of the proposed Orbital ATK acquisition and the timing and circumstances of the proposed acquisition. 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 except as required by applicable law. Forward-looking statements are not guarantees of future performance and inherently involve a wide range of risks and uncertainties that are difficult to predict. A discussion of these risks and uncertainties is contained in the Company’s filings with the Securities and Exchange Commission.