C
Castelion
Defence · Torrance, United States · Founded 2022
A modern defense production company building the next generation of military hypersonic, vehicle, and strike systems to deter future wars MoreLess
Castelion is a forward-thinking startup focused on enhancing global stability through advanced military technology. The company designs, tests, and manufactures next-generation military systems at a rapid pace and on a large scale. Their mission is to maintain a global technical edge for America and its allies, ensuring peace through deterrence.
Castelion's primary offerings include ultra-high-performance thermal protection systems and avionics, which are essential components of modern military vehicles and aircraft. These systems help protect and enhance the performance of military equipment, making them more effective in various operational scenarios.
The company primarily serves government clients, including the U.S. Department of Defense and allied nations' defense agencies. By providing cutting-edge technology, Castelion helps these clients maintain a strategic advantage in global defense.
Operating in the defense technology market, Castelion's business model revolves around research and development, followed by large-scale manufacturing. They invest heavily in innovation to stay ahead of potential threats and ensure their products meet the highest standards of performance and reliability.
Castelion makes money through government contracts and partnerships with defense agencies. These contracts often involve long-term agreements, providing a steady revenue stream. Additionally, the company may engage in collaborative projects with other defense contractors, further expanding its market reach and financial stability.
In summary, Castelion is a key player in the defense technology sector, dedicated to developing advanced military systems that support global stability and peace through deterrence.
Keywords: military technology, defense systems, thermal protection, avionics, rapid manufacturing, government contracts, defense market, innovation, global stability, deterrence.
Company overview
Castelion company information
The essential company record, classifications and operating signals in one place.
- Status
- Operational
- Founded
- 2022
- Headquarters
- Torrance, United States
- Employees
- 174
- Open positions
- 101
- Dealroom signal
- 95.8
Valuation & funding
Castelion funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SERIES BOther financing | Dec 2025 | $350M | $1.4B | General Catalyst · BlueYard Capital · Lavrock Ventures · First In Capital | ↗ |
| DEBTDebt | Jan 2025 | $30M | — | Silicon Valley Bank | ↗ |
| SERIES AOther financing | Jan 2025 | $70M | $280M | Andreessen Horowitz · Lavrock Ventures · First In Capital · Lightspeed Venture Partners | ↗ |
| EARLY VCOther financing | Oct 2023 | $14M | $57M | First In Capital · Andreessen Horowitz · Lavrock Ventures · BlueYard Capital | ↗ |
| GRANTOther financing | Sep 2023 | $1.8M | — | US Department of War · Small Business Innovation Research | ↗ |
| GRANTOther financing | Sep 2023 | US Department of War · Small Business Innovation Research | ↗ | ||
| EARLY VCOther financing | Apr 2023 | Undisclosed | ↗ |
Growth signals
Castelion website traffic
Latest recorded traffic for Castelion is 25K monthly website visits, up 78.6% over the last three months. Castelion's team grew 30.8% over the past year.
Hiring
Open positions at Castelion
Current openings linked to this company in Dealroom.
Comparisons
Castelion compared with similar companies
Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.
| Company | Headquarters | Status | Employees | Total funding | Valuation |
|---|---|---|---|---|---|
HermeusReusable hypersonic aircraft for defense and security missions. |
Atlanta, United States | Operational | 376 | $416M | $1B |
Long WallDeployable missile defense and hypersonic flight-test systems (formerly ABL Space Systems) |
El Segundo, United States | Operational | |||
StarkAI-enabled unmanned systems for European defence operations. |
Berlin, Germany | Operational | |||
True AnomalyAutonomous orbital defense systems for national space superiority |
Denver, United States | Operational | |||
HypersonicaOperator of an aviation company intended to ensure Europe's resilience and space sovereignty |
Weßling, Germany | Operational | |||
ApexSatellite buses enabling scalable commercial space missions |
Los Angeles, United States | Operational | |||
Polaris SpaceplanesDevelops a novel reusable space launch and hypersonic transport system |
Bremen, Germany | Operational | |||
Swarm AeroMass-produced autonomous drone swarms for defense operations. |
Oxnard, United States | Operational |
Talent graph
Castelion's talent
Source: Dealroom Talent Intelligence.
Global footprint
Where Castelion has talent and traffic
In the news
Latest news about Castelion
Recent press, funding announcements, and product moves mentioning Castelion — open to read from the original sources.
Market sentiment
What the market is saying about Castelion
An AI-synthesized read of the highest-engagement posts about Castelion on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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