CarlyleAndreessen HorowitzU.S. NavyCastelion

Castelion raises over $1 billion to expand production of Blackbeard hypersonic missile and develop new weapons.

Castelion has raised over $1 billion in funding to enhance production of its Blackbeard hypersonic missile and develop new weapons, including a larger hypersonic strike weapon and air-defense systems. The investment reflects growing interest in the defense sector, valuing the startup at $13 billion.

wsj.com wsj.com+1 source20 August 2026 · 01:27 UTC
CuriousCats Full Story

Castelion has successfully closed a funding round exceeding $1 billion, co-led by Carlyle and Andreessen Horowitz, to enhance the production of its Blackbeard hypersonic missile and develop new weaponry. The financing includes $800 million in equity and a $250 million revolving credit facility, valuing the startup at $13 billion.1234

The funds will primarily be allocated to ramp up production at Castelion's facility in Sandoval County, New Mexico, with the initial fielding of Blackbeard targeted for 2027. The U.S. Navy has emerged as a key customer, awarding Castelion approximately $50 million in February to advance Blackbeard's operational capabilities, followed by a $105 million contract in April for integration and testing on the F/A-18E/F Super Hornet.567

In June, the Navy placed a $23.4 million order for 50 pre-production Blackbeard missiles, which are expected to cost around $384,000 each, significantly lower than existing U.S. hypersonic weapons. The fresh capital will also support the development of a larger hypersonic strike weapon and mass-produced air-defense missiles, reflecting the growing demand for advanced defense technologies.89

Key Insight
“The funding values Castelion at $13 billion and will support the production of its Blackbeard missile at its New Mexico facility. The U.S. Navy has emerged as a key customer, awarding Castelion approximately $155 million in contracts to advance the missile's operational capabilities.”
CuriousCats studied:
1
wsj.comwsj.com
“Castelion closed a more than $1 billion funding round co-led by private-equity giant Group, reflecting blue-chip firms’ growing interest in a booming corner of the defense industry.”
wsj.com →
2
SpaceNewsSpaceNews
“Castelion, a defense-tech startup seeking to mass produce lower-cost hypersonic weapons, has raised more than $1 billion in new financing as it moves to expand missile production and develop a broader portfolio of offensive and defensive weapons.”
SpaceNews →
Ask CuriousCats
What does Castelion produce?
Who are Castelion's key customers?
Why is hypersonic missile production important?
Are other companies investing in hypersonic technologies?
How does U.S. Navy's funding compare to other military contracts?
Get your CIA-level briefing,
in real time.
CuriousCats monitors the internet every minute for you and brings you the most personalized brief of videos, social media posts, news and more.
Download the App
Liked the depth here?
Get the full internet briefed for you any time of the day.
Get CuriousCats