Oct 202619
Arlington Capital Partners takes Gooch & Housego private
UK-based designer and manufacturer of photonic and optical components and subsystems for aerospace & defense, industrial and life sciences markets.
UndisclosedClosed
Tracker · Private equity
Arlington Capital Partners: Defense Investment History
50 defense buys: 17 by the firm and 33 add-ons by companies it backs. It sold 7 businesses in that time.
Arlington Capital Partners and the companies it backs made the most defense buys in 2024: 10
Buys by the firm and add-ons by companies it backs, by year announced.
Bought by the firmAdd-ons by companies it backs
2020 1 + 78
2021 4 + 59
2022 0 + 44
2023 3 + 69
2024 5 + 510
2025 0 + 44
2026 4 + 26
Source: company, investor and government releases and SEC filings.
TGOs tgos.io
Bought by the firm 17
Apr 202629
Arlington Capital Partners buys ENERCON
Seller: Oaktree Capital Management
A specialized engineering firm with a focus on nuclear and other highly regulated power end markets; merged with Arlington's Pond & Company
UndisclosedClosed
Mar 202623
Arlington Capital Partners buys Eptec Defence
Seller: Eptec Group
Related platform: Highwater
A remediation and new build preservation services provider for Australian naval defense vessels
UndisclosedClosed
Jan 202612
Arlington Capital Partners buys Pond & Company
Seller: DC Capital Partners
A full-service design and engineering firm providing regulatory-driven, high-precision services to the federal government and customers across the energy, infrastructure and life sciences industries
UndisclosedClosed Jan 12, 2026
Jan 202425
Arlington Capital Partners buys Metal Trades
Related platform: Keel
Acquired alongside Merrill Technologies Group and merged with Pegasus Steel to form Keel, a manufacturer of complex structures for Navy, Army and Air Force programs
UndisclosedClosed
Jan 202425
Arlington Capital Partners buys Merrill Technologies Group
Related platform: Keel
Acquired alongside Metal Trades and merged with Pegasus Steel to form Keel, a manufacturer of complex structures for Navy, Army and Air Force programs
UndisclosedClosed
Jan 202404
Arlington Capital Partners buys Walbar
Related platform: Kinetic Engine Systems
Acquired to form Kinetic Engine Systems, a platform for precision aerospace and defense engine components
UndisclosedClosed
Jan 202404
Arlington Capital Partners buys AeroCision
Related platform: Kinetic Engine Systems
Acquired to form Kinetic Engine Systems, a platform for precision aerospace and defense engine components
UndisclosedClosed
Jan 202404
Arlington Capital Partners buys Numet
Related platform: Kinetic Engine Systems
Acquired to form Kinetic Engine Systems, a platform for precision aerospace and defense engine components
UndisclosedClosed
Sep 202326
Arlington Capital Partners buys Exostar
Seller: Thoma Bravo
A company focused on trusted, secure business collaboration in highly regulated industries including aerospace and defense, healthcare and life sciences
UndisclosedClosed Nov 20, 2023
Aug 202302
Arlington Capital Partners buys Integrated Data Services
Also known as: IDS
Provider of software and technology-enabled support and development for federal government customers; flagship software is Comprehensive Cost and Requirement (CCaR)
UndisclosedClosed Aug 2, 2023
Jun 202314
Arlington Capital Partners buys Pegasus Steel
Related platform: Keel
Provider of complex fabricated steel structures used for the construction of submarines, aircraft carriers and other naval and industrial systems
UndisclosedClosed
Oct 202106
Arlington Capital Partners buys Systems Planning & Analysis
Provider of systems engineering, modeling and simulation, advanced analytics, strategic advisory, industrial policy and program management to government and defense customers; to be combined with Arlington portfolio company MCR, LLC
UndisclosedClosed
Aug 202124
Arlington Capital Partners buys MCR
A provider of cost analysis and engineering and software development expertise to customers in defense, intelligence and critical civilian governmental agencies
UndisclosedClosed
Aug 202103
L3Harris sells Electron Devices and Narda Microwave-West divisions to Affiliate of Arlington Capital Partners
Buyer: Affiliate of Arlington Capital Partners
A provider of RF amplification products for the space, electronic warfare, radar, medical and industrial end markets
$185 millionClosed Oct 1, 2021
May 202110
Triumph Group sells Qarbon Aerospace to Arlington Capital Partners
Buyer: Arlington Capital Partners
A provider of large, complex structural components and assemblies such as fuselages, wings, flight control surfaces, and engine nacelles
UndisclosedClosed May 10, 2021
Jul 202008
Arlington Capital Partners buys J&J Worldwide Services
A provider of mission-essential, preventative maintenance activities to critical U.S. Federal Government sites
UndisclosedClosed Jul 8, 2020
Add-ons by companies it backs 33
Jul 202607
Highwater agrees to buy AMP United
Related platform: Highwater
A U.S. provider of naval preservation, structural and scaffolding services
UndisclosedAnnounced
Jun 202609
Tyto Athene buys Ready Support Services
Backed by Arlington Capital Partners
Buyer now known as: Quantum Sky
A provider of mission-tailored enterprise service management and cloud migration for U.S. intelligence agencies
UndisclosedClosed Jun 9, 2026
Oct 202509
Systems Planning & Analysis buys Group W
Backed by Arlington Capital Partners
A data science and defense analytics company focused on modeling and simulation and wargaming
UndisclosedClosed Oct 9, 2025
May 202508
Tyto Athene buys stackArmor
Backed by Arlington Capital Partners
Buyer now known as: Quantum Sky
A provider of FedRAMP, FISMA/RMF and CMMC/DFARS compliance acceleration, cloud and security automation solutions for government agencies and the industrial base
UndisclosedClosed May 8, 2025
Mar 202519
Systems Planning & Analysis buys Intrepid
Backed by Arlington Capital Partners
An engineering company with prime positions in the missiles and space, enterprise modernization, and aviation and mission support domains
UndisclosedClosed Mar 19, 2025
Mar 202504
Systems Planning & Analysis buys Proximity Advisory Services
Backed by Arlington Capital Partners
UndisclosedClosed Mar 4, 2025
Nov 202417
Spirit AeroSystems sells Fiber Materials to Tex-Tech Industries
Buyer: Tex-Tech Industries · Backed by Arlington Capital Partners
Related platform: FMI Industries
Multidirectional reinforced composites for high-temperature uses such as thermal protection systems, re-entry vehicle nose tips, and rocket motor throats and nozzles
$165 millionClosed Jan 13, 2025
Nov 202413
Tyto Athene buys Key Solutions
Backed by Arlington Capital Partners
Buyer now known as: Quantum Sky
A Washington, D.C. area firm providing expert bid and proposal development consulting and support
UndisclosedClosed Nov 13, 2024
Jun 202404
Tyto Athene buys MindPoint Group
Backed by Arlington Capital Partners
Buyer now known as: Quantum Sky
A provider of end-to-end managed cybersecurity services to U.S. federal agencies and organizations
UndisclosedClosed Jun 30, 2024
Apr 202408
Tyto Athene buys Microtel
Backed by Arlington Capital Partners
Buyer now known as: Quantum Sky
A software development and systems engineering firm deeply embedded in long-term, space missions for NASA and international space programs
UndisclosedClosed Apr 8, 2024
Mar 202407
Systems Planning & Analysis buys ManTech technical advisory services programs
Seller: ManTech · Backed by Arlington Capital Partners
ManTech's DARPA, Office of the Secretary of Defense Strategic Capabilities Office and select National Reconnaissance Office technical advisory services programs
UndisclosedClosed Mar 7, 2024
Nov 202329
BlueHalo buys Ipsolon Research
Backed by Arlington Capital Partners
A designer and manufacturer of high-performance, ultra-small form factor Software Defined Radios
UndisclosedClosed Nov 29, 2023
Nov 202301
Eqlipse Technologies buys SR Technologies
Backed by Arlington Capital Partners
A provider of signals intelligence and electronic warfare technologies
UndisclosedClosed
Oct 202312
Stellant Systems buys Power Systems Technology product line
Seller: Comtech Telecommunications · Backed by Arlington Capital Partners
Comtech's solid-state power amplification (PST) product line
Up to $40 millionClosed Nov 7, 2023
Sep 202306
Systems Planning & Analysis buys PRKK
Backed by Arlington Capital Partners
A firm focused on Space Domain Awareness and Space Superiority, doing large cross-domain studies and analyses
UndisclosedClosed Sep 6, 2023
Apr 202303
BlueHalo buys Verus Technology Group
Backed by Arlington Capital Partners
A designer and integrator of counter-unmanned aerial systems products using radio frequency and digital signal processing technologies
UndisclosedClosed Apr 3, 2023
Feb 202316
Tex Tech Industries buys SGL Carbon Gardena site
Seller: SGL Carbon · Backed by Arlington Capital Partners
Related platform: FMI Industries
The operating assets of SGL Carbon's Gardena, California site, a developer and manufacturer of high-temperature composite materials and components
UndisclosedClosed Feb 16, 2023
Dec 202209
Forged Solutions Group buys Continental Forge
Backed by Arlington Capital Partners
A provider of precision near-net shape forged and machined solutions to the military and commercial aerospace industries
UndisclosedClosed
Nov 202217
Forged Solutions Group buys Steel Industries
Backed by Arlington Capital Partners
A vertically integrated manufacturer of open die forgings and seamless rolled rings for aerospace and defense, space, and industrial markets
UndisclosedClosed
Sep 202206
Systems Planning & Analysis buys ORCA unit of Metron
Seller: Metron · Backed by Arlington Capital Partners
Metron's Operations Research & Cyber Analysis division, specializing in operations research, systems of systems engineering, model-based system engineering, and digital engineering
UndisclosedClosed Sep 6, 2022
Jan 202210
Tyto Athene buys Qbase
Backed by Arlington Capital Partners
Buyer now known as: Quantum Sky
A pure-play provider of network modernization solutions and IT digital transformation services
UndisclosedClosed Jan 10, 2022
Nov 202123
BlueHalo buys Asymmetrik
Backed by Arlington Capital Partners
A developer of software solutions and technology tools for Intelligence Community programs, including Open Source Intelligence
UndisclosedClosed Nov 23, 2021
Nov 202108
BlueHalo buys Citadel Defense
Backed by Arlington Capital Partners
A San Diego developer of counter unmanned aerial systems technology
UndisclosedClosed Nov 8, 2021
Aug 202119
BlueHalo buys Intelligent Automation
Backed by Arlington Capital Partners
A Rockville, MD provider of advanced technology development and productized solutions in AI/ML, cybersecurity, hypersonics, space, 5G, data analytics, and RF/communications
UndisclosedClosed
Jul 202106
BlueHalo agrees to buy DDES
Backed by Arlington Capital Partners
An Albuquerque, NM designer and manufacturer of space-qualified electronic systems for spacecraft
UndisclosedAnnounced
Mar 202103
Tyto Athene buys AT&T Government Solutions
Seller: AT&T · Backed by Arlington Capital Partners
Buyer now known as: Quantum Sky
AT&T's Department of Defense IT professional services business and select other contracts
UndisclosedClosed Apr 2021
Dec 202021
BlueHalo buys Fortego
Backed by Arlington Capital Partners
A Maryland-based provider of advanced SIGINT and cyber operations solutions, including cyber analytics, vulnerability research, and CNO engineering
UndisclosedClosed Dec 21, 2020
Dec 202021
BlueHalo buys Base2
Backed by Arlington Capital Partners
A Maryland-based provider of cyber solutions across Computer Network Operations, Signals Intelligence and Quick Reaction Capability
UndisclosedClosed Dec 21, 2020
Dec 202015
Octo merges with Sevatec
Backed by Arlington Capital Partners
A Fairfax-based provider of mission-critical software development solutions and digital modernization services to the Federal Government
UndisclosedClosed
Oct 202029
AEgis Technologies buys Brilligent Solutions
Backed by Arlington Capital Partners
Acquired and combined with AEgis and Applied Technology Associates to form BlueHalo, a provider of advanced engineering solutions and technology to the national security community
UndisclosedClosed
Oct 202029
AEgis Technologies buys Applied Technology Associates
Backed by Arlington Capital Partners
Acquired and combined with AEgis and Brilligent to form BlueHalo, a provider of advanced engineering solutions and technology to the national security community
UndisclosedClosed Oct 29, 2020
Apr 202007
AEgis Technologies buys Excivity
Backed by Arlington Capital Partners
A developer of mission-enabling technologies, including specialized security applications and situational awareness toolsets
UndisclosedClosed Apr 7, 2020
Feb 202018
Cadence Aerospace buys Premier Processing
Backed by Arlington Capital Partners
A provider of surface finishing and special processing capabilities for aerospace and defense customers
UndisclosedClosed
Sold 7
Mar 202602
Arlington Capital Partners sells Forged Solutions Group to J.F. Lehman & Company
Buyer: J.F. Lehman & Company
A global provider of complex, precision forgings to aerospace, defense and space customers
UndisclosedClosed Mar 2, 2026
Jan 202602
Arlington Capital Partners sells Tex-Tech Industries to Michelin
Buyer: Michelin
A developer and manufacturer of proprietary, highly-engineered solutions serving aerospace, space & defense, and specialty industrial end markets
UndisclosedClosed
Nov 202419
AeroVironment merges with BlueHalo
Seller: BlueHalo Holdings Parent · Backed by Arlington Capital Partners
Provider of capabilities in Space, C-UAS and Autonomous Systems, Electronic Warfare and Cyber, and AI/ML.
$4.1 billionClosed May 1, 2025
Feb 202405
Arlington Capital Partners sells J&J Worldwide Services to CBRE Group
Buyer: CBRE Group
A provider of preventative maintenance, base support operations and facilities maintenance for the U.S. federal government
Up to $1.05 billionClosed Feb 27, 2024
Dec 202207
Arlington Capital Partners sells Octo to IBM
Buyer: IBM
A pure-play digital modernization solutions provider to the federal government
UndisclosedClosed
Jun 202107
Arlington Capital Partners sells Molecular Products to Filtration Group
Buyer: Filtration Group
A global provider of pure air technologies and manufacturer of advanced chemistry-based products for the treatment of breathable gases
UndisclosedClosed Jun 7, 2021
Aug 202019
KBR buys Centauri
Seller: Arlington Capital Partners
Provides high-end engineering and development solutions for national security missions associated with space, intelligence, cyber, and emerging technologies such as directed energy and missile defense
$827 millionClosed Oct 1, 2020
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