How Much Did Castelion Raise? Funding & Key Investors

Date August 18, 2025
C

Castelion

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.

How Much Did Castelion Corporation Raise? Funding & Rounds and Investors

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.

Funding Rounds

Series B - $350M - July 2025

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.

Series A - $70M - January 29, 2025

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.

Debt Financing - $30M - January 29, 2025

Venture Debt financing provided operational capital to support ongoing growth, development, and production activities across Castelion’s expanding facility footprint.

Seed Round - $14.2M - October 2023

Seed funding was aimed at accelerating product development and facilitating Castelion Corporation's initial market entry with new hypersonic and advanced strike systems.

Pre-Seed Round - $5.4M - April 2023

This initial round secured funds necessary for launching the company and supporting early-stage research and development efforts.

Key Investors

Lightspeed Venture Partners

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

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

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

Lavrock Ventures led the Pre-Seed Round, helping catalyze Castelion Corporation’s launch with their initial investment into defense-oriented startups.

Altimeter Capital

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

7percent Ventures participated in investment rounds, supporting Castelion Corporation’s innovative defense manufacturing mission.

Cantos Ventures

Cantos Ventures contributed as one of the Castelion Corporation investors, backing early and growth-stage financing efforts.

Interlagos Capital

Interlagos Capital joined the roster of Castelion Corporation investors, helping to accelerate growth initiatives.

IPO CLUB

IPO CLUB rounded out the list of key Castelion Corporation investors, offering strategic capital for continued expansion.

Find funding data on any company with Websets!

Websets is a powerful natural language search and data enrichment tool that helps you discover comprehensive funding information for any company. Whether you're researching Castelion Corporation funding rounds or exploring investment data for other companies, Websets provides detailed insights into funding history, investors, and financial milestones.

With Websets, you can access detailed funding profiles, investor information, and financial data through intuitive natural language queries. Sign up now to enhance your funding research capabilities.