Best Aerospace, Maritime and Defense Companies in Illinois, United States
The 55 best Aerospace, Maritime and Defense companies in Illinois, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Prescient Systems.
Our analysis of 50 Aerospace, Maritime and Defense companies
$6.7b in tracked funding; 89% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Aerospace, Maritime and Defense companies in Illinois
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Prescient Systems Limited information available | $3M | 316 mo ago | Series A | — | 1997 | — | — | — |
| 2 | Controlled Force Provider of security training and services for law enforcement, military, and commercial clients 57Innovation top 20%Product top 32%Growth top 35%Tech top 41% All 7 signals ▾Innovationtop 20% Producttop 32% Growthtop 35% Techtop 41% Fundingbottom 46% Marketbottom 30% Globalbottom 25% Innovation: 9 product lines Product: 9 distinct product lines · Company stage: Conventional Debt rank vs industry peers · Fliar Intelligence Index 57/100 | $2M | 15 mo ago | Funding Raised | — | 1997 | Cart FunctionalityWordPressMySQL+27 | — | — |
| 3 | Skyworks Aeronautics Manufacturer of electrical gyroplanes | — | 36 mo ago | Funding Raised | — | 1986 | — | — | — |
| 4 | Brunswick Manufacturer of marine propulsion systems, boats, parts, and related accessories | — | 67 mo ago | Public | David Foulkes Chief Executive Officer | 1845 | Apple iCloud MailMicrosoft 365Bootstrap+23 | 2,165 patents Electric marine propulsion systems, including drive shafts, thermal management, and isolation testing | — |
| 5 | J.A. Air Center Offers avionics installation, aircraft maintenance, interior refurbishment and detailing services | — | 68 mo ago | Funding Raised | Jody Dills CEO | 1965 | DudaReactstyled-components+16 | — | — |
| 6 | aircraft propeller service Aircraft Propeller Service offers to repair and overhauling of major propeller parts for the aviation and… | — | — | Acquired | Daniel Colbert President and CEO | 1953 | WebflowMicrosoft 365jsDelivr+8 | — | — |
| 7 | Airspares Unlimited Provider of aftermarket solutions for commercial aircraft landing gear, wheels, brakes | — | — | Unfunded | — | 2014 | — | — | — |
| 8 | AOG Aviation Spares Provider of aerospace repair and engineering services | — | — | Acquired | — | 2003 | — | — | — |
Top 5 Aerospace, Maritime and Defense companies in Illinois
#1
Funding Raised · Batavia, Illinois · founded 1997 · 53 employees$2.2Mraised▾
Provider of security training and services for law enforcement, military, and commercial clients. It offers a range of training programs, including military combatives, law enforcement arrest and control tactics, and homeland security instruction. The company also provides security services, encompassing consulting, site assessments, and personnel protection. Its training curriculum is designed to instill knowledge and skills for operating with control and confidence in critical environments. Instructor development programs are available, building expertise within the company's training methodologies. The company's services aim to improve safety for those protecting national security.
- Apr 2025Conventional Debt$2.2M
#2
Series A · Westchester, Illinois · founded 1997 · 39 employees$3Mraised▾
Developer of business software intended to provide subscription-based electronic supply chain and advanced commerce software. The company's platform is retailer-centric and collaborative commerce services are designed with the understanding that product demand and business processes are fluid, enabling retailers and suppliers to capture, manage, share and utilize point-of-sale information across the entire supply chain.
- Feb 2000Series A$3M
#3
Funding Raised · Chicago, Illinois · founded 1986 · 12 employees—raised▾
Manufacturer of electrical gyroplanes. It specializes in the design and development of high-performance gyroplanes.
- Jul 2023Unattributed—
#4
Public · Vernon Hills, Illinois · founded 1845 · 17300 employees—raised▾
Manufacturer of marine propulsion systems, boats, parts, and related accessories. It focuses on creating opportunities in marine leisure through sustained investment in consumer-focused technology and bold innovation. It reflects a continuous effort to innovate and broaden access to aquatic adventures, ensuring that their products and services enable boundless enjoyment on the water.The company innovates technologies and services across the boating ecosystem.
#5
Funding Raised · Aurora, Illinois · founded 1965 · 39 employees—raised▾
Offers avionics installation, aircraft maintenance, interior refurbishment and detailing services
- Nov 2020Conventional Debt—
Funding & investor landscape
Market landscape — 10 sub-themes by coverage
Share of Aerospace, Maritime and Defense coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Defense Technology is moving in the United States
A read on the academic research around Defense Technology — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 462 United States-affiliated papers.
- Pennsylvania State University19
- United States Air Force Research Laboratory15
- United States Naval Academy12
- U.S. Air Force Institute of Technology10
- Naval Postgraduate School9
- Photonics2→4
- Jamming6→7
- Electronic warfare55
- Radar36
- Missile32
- Missile defense18
- Jamming12
- Aerospace engineering2→4
- Cruise missile4→5
Where defense tech is researched across United States
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Who's filing defense tech patents in the United States
United States defense tech patent filing is accelerating — 57 filings from 65 assignees (2016–2025), led by Raytheon, BAE SYS INF & Elect SYS Integ, AAI; annual filings 3→6.
- Raytheon17
- BAE SYS INF & Elect SYS Integ15
- AAI10
- Leonardo Electronics US10
- Lockheed10
- Rocky Research7
- Huggett James M5
- Stroili Frank D5
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.