A national security firm plans to acquire a Danbury-based aerospace and defense technology company for $2.6 billion in an all-cash deal.
CACI International has agreed to acquire ARKA Group, a defense and space-technology contractor with deep roots in Connecticut’s aerospace sector, from funds managed by investment giant Blackstone.
The deal is expected to close in CACI’s fiscal 2026, pending regulatory approvals.
ARKA employs engineers and technical staff in Connecticut. The company develops space-based optical systems, sensors, communications equipment and software used in military and intelligence applications.
ARKA was formed through a series of mergers and acquisitions and has grown into a midsize defense contractor focused on classified and unclassified national security programs. Its legacy companies include Danbury Mission Technologies.
The company in 2024 landed a $136 million U.S. Army contract to supply laser detecting systems.
CACI said the acquisition will add space-related sensing and software capabilities to its existing portfolio, which serves the U.S. Department of Defense and intelligence agencies.
The company did not disclose whether the deal will result in changes to ARKA’s Connecticut operations, staffing levels or capital investment plans.
