Castelion
Castelion designs and manufactures hypersonic strike weapons, like its Blackbeard system, using rapid testing and modern production strategies.
Secondary Market Price
Secondary Market Price
How Castelion Measures Up
To help you manage your Castelion equity, Prospect has run the company through our machine learning model.
Prospect Rating
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This rating reflects our belief in this company's potential to grow to that many times its current value in 4 years. For an employee with stock, this rating suggests a potential return on equity, but it also comes with some risk.
Exit Risk
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Our rating is a reflection of the likelihood of this company achieving a liquidity event for its employees based on the quality of investors, funding stage, founders, and more.
Funding Stage
Series B
A company’s funding stage reflects how established it is, how quickly it is scaling, and the average impact an employee may have when joining.
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Prospect Projected Future Castelion Prices
Prospect’s machine learning model has been trained on the same data top-tier investors use to project the likely range of outcomes for Castelion's equity. Create a free account to view 10th-90th percentile projections over 2, 4, and 6 years.
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Company Description
Castelion is a defense production company that designs, manufactures, and tests hypersonic strike weapons and related systems, including rocket motors and missile avionics. Founded in 2022 by Bryon Hargis, Sean Pitt, and Andrew Kreitz, the company was formerly known as Pallas Industries. Since its inception, Castelion has secured over $100 million in U.S. government contracts and has conducted more than 26 test flights in its first 2.5 years of operation. The company focuses on vertical integration and modern manufacturing strategies to produce systems at scale within the United States.
In late 2025, Castelion announced it had raised $350 million in a Series B funding round, which brought the company's valuation to $2.8 billion. The capital is intended to help scale production as the company moves from development into sustained flight testing. That same month, Castelion completed a major flight test at the Point Mugu Sea Range in collaboration with the Naval Air Warfare Center Weapons Division. Looking ahead, the company plans to begin manufacturing its Blackbeard hypersonic missiles at a new factory in New Mexico in 2026.
- Altimeter Capital
- Lightspeed Venture Partners
- Lavrock Ventures
- Andreessen Horowitz
- General Catalyst
- First In
- Space VC
- Cantos
- BlueYard
- Avenir
- Champion Hill
- Interlagos
- Co-Founder, Bryon Hargis
- Co-Founder, Sean Pitt
- Co-Founder, Andrew Kreitz
Peer Group Comparison
Vs Peer Group of >$4B Startups
Frequently Asked Questions
Joining Anduril as an employee is another way to acquire equity, typically through stock options included in compensation packages.
Is Castelion worth joining?
Deciding whether to join a company like Castelion depends on your personal career goals and how you evaluate the company's potential and its compensation package. Tools like Prospect can help you understand the potential future value of your equity offer to make a more informed decision.
What should I do with my Castelion stock?
Managing your Castelion stock effectively requires a personalized strategy that considers your financial goals and tax implications. Platforms like Prospect offer tools to help you create tax-optimized exercise strategies and decide when to sell your shares.
Can you sell Castelion stock?
Selling stock in a private company like Castelion is typically possible during specific events like tender offers or on secondary markets, though it's more restricted than with public companies. Resources such as Prospect provide tools and data, including secondary market prices, to help you navigate these selling opportunities.
How can I find the value of my Castelion stock?
The value of private stock is typically determined by the company's 409A valuation and prices from recent funding rounds or secondary market sales. To help you understand its potential future worth, Prospect uses predictive models trained on venture capital data to forecast your equity's value.
What is Castelion's equity worth?
The precise worth of Castelion's equity is based on its most recent company valuation, which can fluctuate with new funding rounds and business performance. You can use a platform like Prospect to model different scenarios and project the potential value of your specific holdings.
What is Castelion's stock ticker symbol?
As a private company, Castelion does not have a stock ticker symbol because its shares are not traded on a public stock exchange. A ticker symbol will only be assigned if and when the company completes an Initial Public Offering (IPO).
Can I buy or sell Castelion stock?
As a private company, opportunities to buy Castelion stock are generally limited to employees or accredited investors in specific funding rounds, while selling is often restricted to events like tender offers. If you are an employee, tools from Prospect can help you manage your equity and make informed decisions during selling opportunities.
What is the criteria to buy or invest in Castelion stock?
Investing in a private company like Castelion is usually reserved for accredited investors who meet certain financial criteria set by securities regulators. Employees may also receive equity as part of their compensation package, which is another primary way to acquire stock before a company goes public.
