Kratos Defense & Security Solutions Acquires 5-D Systems, Inc.

Sigma Defense Systems Acquires Aries Defense

October 13, 2025

Aerospace & Defense

Sigma Defense Systems has acquired Aries Defense to expand its tactical-edge ISR and CJADC2 capabilities by integrating Aries' field-proven video and sensor integration products into Sigma's Olympus DevSecOps ecosystem. The deal strengthens real-time ISR capture, networking, and distribution for scalable UAV and unattended sensor operations, improving situational awareness for U.S. defense customers.

DHI Group Acquires AgileATS

August 6, 2025

Cloud & SaaS

DHI Group, Inc. (NYSE: DHX) has acquired AgileATS, an applicant tracking system purpose-built for government contractors and employers hiring security-cleared professionals, for an estimated $2.0 million (up-front $1.5M plus $0.5M contingent on performance). The acquisition integrates AgileATS into DHI's ClearanceJobs brand to deliver an end-to-end, AI-powered recruiting solution and expand the company's addressable market in the GovTech/cleared talent space.

Sigma Defense Acquires Sub U Systems

May 17, 2022

Aerospace & Defense

Sigma Defense Systems LLC, a portfolio company of Sagewind Capital, has acquired Sub U Systems to expand its C5ISR, JADC2 and tactical SATCOM communications capabilities. The deal brings Sub U's ruggedized routers, switches and edge computing hardware into Sigma Defense's portfolio to accelerate delivery of ISR relay, edge compute, AI/ML and analytics solutions for defense and public-safety customers.

HelpSystems (Fortra) Acquires Digital Defense

February 3, 2021

Cybersecurity

HelpSystems (now rebranded as Fortra) acquired Digital Defense, a provider of vulnerability management and threat assessment solutions, to broaden its cybersecurity and security-assessment product suite. The acquisition adds Digital Defense's cloud-native vulnerability scanning engine and US-based penetration-testing services to HelpSystems' existing portfolio, strengthening capability coverage across healthcare, legal, financial services and other industries.

McKean Defense Group Acquires Mikros Systems Corporation

November 12, 2020

Aerospace & Defense

McKean Defense Group agreed to acquire Mikros Systems Corporation for approximately $4.6 million in cash, purchasing all outstanding common stock in a merger. The acquisition strengthens McKean's U.S. Navy portfolio by adding Mikros' electronic systems, combat-systems monitoring and diagnostic analytics capabilities to support Littoral Combat Ship programs and other naval sustainment work.

C3 Integrated Solutions Acquires Ingalls Information Security

November 14, 2023

Cybersecurity

C3 Integrated Solutions and Ingalls Information Security announced a merger in which C3 will integrate Ingalls' cybersecurity capabilities—including SOC, MDR/MXDR, and DFIR—into its compliance-focused managed services for the U.S. Defense Industrial Base. The deal brings Ingalls' DoD and defense-focused cyber expertise and leadership (Jason Ingalls becomes C3's Chief Cybersecurity Officer) to strengthen C3's IT, cybersecurity, and CMMC compliance offerings.