COMPANY INFO
Castelion Corporation, founded in 2022 by Bryon Hargis, Sean Pitt, and Andrew Kreitz, is a private aerospace and defense company headquartered in El Segundo, California. With about 50 employees, Castelion specializes in modern defense production, focusing on rapid iteration and scalable manufacturing to develop affordable, high-performance hypersonic strike systems that strengthen national security and outpace evolving threats. Their website is https://www.castelion.com.
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Castelion Corporation is a leading private aerospace and defense company founded in 2022 and headquartered in El Segundo, California. With approximately 50 employees, Castelion Corporation operates in the Defense and Space Manufacturing sector. The company focuses on rapid iteration and scalable manufacturing to create cost-effective, high-performance hypersonic strike systems that enhance national security and outpace emerging threats.
Castelion Corporation funding has propelled the company to the forefront of the modern defense sector. Since its founding, Castelion Corporation has raised about $469.6 million across five funding rounds, demonstrating a robust and strategic approach to venture capital and operational financing. Key funding milestones include an initial Pre-Seed round in April 2023, followed by substantial Seed and Series A rounds, as well as a large Series B in July 2025. Castelion's funding strategy has prioritized scaling production capabilities and expanding its hypersonic missile business, with targeted partnerships with prestigious venture capital firms and investors.
This round was designed to support the scaling of Castelion Corporation’s hypersonic missile business, enabling mass production and significant growth in advanced defense technologies.
The Series A round focused on scaling production and expanding Castelion Corporation's market reach, securing equity investment to further accelerate the company's growth trajectory.
Venture Debt financing provided operational capital to support ongoing growth, development, and production activities across Castelion’s expanding facility footprint.
Seed funding was aimed at accelerating product development and facilitating Castelion Corporation's initial market entry with new hypersonic and advanced strike systems.
This initial round secured funds necessary for launching the company and supporting early-stage research and development efforts.
Lightspeed Venture Partners is a leading global venture capital firm that led Castelion Corporation funding in both the Series A and the massive Series B rounds. Their support has been instrumental in helping Castelion scale and achieve critical milestones.
Andreessen Horowitz, a top Silicon Valley venture capital fund, led the Seed Round, fueling Castelion Corporation’s early-stage product development and market entry.
Silicon Valley Bank provided $30 million in venture debt financing during the Series A period, enabling Castelion Corporation to enhance operational capacity and manage capital requirements.
Lavrock Ventures led the Pre-Seed Round, helping catalyze Castelion Corporation’s launch with their initial investment into defense-oriented startups.
Altimeter Capital played a key role in Castelion Corporation’s Series B, providing significant capital for mass production and long-term scaling of hypersonic missile technologies.
7percent Ventures participated in investment rounds, supporting Castelion Corporation’s innovative defense manufacturing mission.
Cantos Ventures contributed as one of the Castelion Corporation investors, backing early and growth-stage financing efforts.
Interlagos Capital joined the roster of Castelion Corporation investors, helping to accelerate growth initiatives.
IPO CLUB rounded out the list of key Castelion Corporation investors, offering strategic capital for continued expansion.
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This page is built with Exa, a web search API for AI agents. It is updated every 24 hours.
Exa searches the web, extracts relevant source content, and returns structured outputs with citations.
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"totalRaised": "Castelion has raised a total of approximately $469.6 million over 5 funding rounds. The detailed breakdown is as follows:\n\n1. Pre-Seed Round (April 2023): $5.4M raised, led by Lavrock Ventures. Purpose: Initial launch and early development.\n2. Seed Round (October 2023): $14.2M raised, led by Andreessen Horowitz. Purpose: Product development and market entry.\n3. Series A (January 2025): $70M raised in equity, led by Lightspeed Venture Partners. Purpose: Scaling operations and advanced product development.\n4. Debt Financing (January 2025): $30M raised, led by Silicon Valley Bank. Purpose: Supporting growth and operational expenses.\n5. Series B (July 2025): $350M raised, led by Lightspeed Venture Partners and Altimeter Capital. Purpose: Scaling hypersonic missile business and mass production.\n\nLatest funding date: July 2025.\nKey investors include Lightspeed Venture Partners, Andreessen Horowitz, Silicon Valley Bank, Lavrock Ventures, and Altimeter Capital.\n\nThis funding summary combines the latest and most comprehensive data from multiple reliable sources including TechCrunch, Clay.com, Tracxn, and Pitchbook."
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