Engineered Support Systems Inc. said it has entered into a binding, definitive agreement to purchase the membership interests of Spacelink International LLC, a firm involved in the design, integration, operation and maintenance of deployed satellite and wireless networks for the U.S. Defense Department, the U.S. intelligence community and other forward deployed federal agencies and multinational organizations worldwide.

According to the terms of the agreement, the initial purchase price totals $150.5 million, consisting of $138.5 million in cash and $12 million unregistered shares of Engineered Support common stock. The purchase price is subject to certain adjustments to be finalized after closing, including an element of contingent consideration based on Spacelink’s future financial performance.