Castelion
Develops low-cost, mass-producible hypersonic strike weapons, led by the Blackbeard missile, with in-house solid rocket motor production in New Mexico.
X-51A WaveRider hypersonic test vehicle under a B-52 wing at Edwards Air Force Base. Photo: U.S. Air Force/Chad Bellay, Public domain (U.S. government work).
Funding history
| Date | Round | Amount |
|---|---|---|
| Aug 2026 | Series C | $1B |
Why it matters
Navy order for 50 Blackbeard prototypes ($23.4M, June 2026) and a May 2026 DoD framework for at least 500 missiles per year; building the 1,000-acre Project Ranger campus in Sandoval County, New Mexico.
Is Castelion publicly traded?
Castelion is privately held as of November 14, 2026: there is no ticker and no announced IPO. Shares are not available on public exchanges.
Information only, not investment advice.
Key figures confirmed by multiple sourcesLast verified November 14, 2026
Castelion: key questions
What does Castelion do?
Develops low-cost, mass-producible hypersonic strike weapons, led by the Blackbeard missile, with in-house solid rocket motor production in New Mexico.
What does Castelion make?
Products named by Castelion include Blackbeard.
Where is Castelion based?
Castelion is headquartered in Torrance, California. It was founded in 2022.
What is Castelion's valuation?
Castelion was valued at $13B as of Aug 2026, after a $1B Series C (Aug 2026).
How much funding has Castelion raised?
Total funding is ~$1.5B, based on announced and reported rounds. Latest round: Series C, $1B, Aug 2026.
Who are Castelion's investors?
Notable investors include JPMorgan Chase Strategic Investment Group, Andreessen Horowitz, The Carlyle Group, Lightspeed Venture Partners, Altimeter, General Catalyst.
Is Castelion publicly traded?
Castelion is privately held as of November 14, 2026: there is no ticker and no announced IPO. Shares are not available on public exchanges.
Can you buy Castelion stock?
Not on a public exchange: Castelion is a private company. Shares of private companies change hands only in private transactions open to accredited investors, when the company allows it. This is not investment advice.
Sources
- washingtontechnology.com/companies/2026/08/castelion-muon-space-complete-series-c-rounds/4
- govconwire.com/articles/castelion-raises-350m-series-b-funding
- thedefensepost.com/2026/08/24/us-castelion-hypersonic-funding/
Figures come from company announcements, government sources and press reports. Spot an error? Send a correction. Nothing here is investment advice.
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