CarlyleAndreessen HorowitzU.S. NavyCastelion

Carlyle leads $1 billion investment round in missile startup Castelion to expand hypersonic missile production.

Carlyle Group co-led a $1 billion funding round for defense startup Castelion, aimed at expanding production of its Blackbeard hypersonic missile. The investment reflects increasing interest in hypersonic technology, with plans for a new strike weapon and air-defense systems, valuing Castelion at $13 billion.

WSJ WSJ+1 source19 August 2026 · 23:25 UTC
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Carlyle Group has co-led a significant funding round of over $1 billion for Castelion, a California-based defense startup, to enhance its production capabilities for the Blackbeard hypersonic missile. This investment, which includes $800 million in equity and a $250 million revolving credit facility, underscores the growing interest from major firms in the hypersonic weapons sector.12345678912

Castelion aims to utilize the funds to not only ramp up production of the Blackbeard missile at its facility in Sandoval County, New Mexico, but also to accelerate the development of a longer-range precision strike weapon and advanced air-defense systems. The company, which has been valued at $13 billion, is targeting the initial fielding of the Blackbeard missile by 2027.

The U.S. Navy has emerged as a primary customer, awarding Castelion approximately $50 million in February to advance the missile's operational capabilities, followed by a $105 million contract in April for integration and testing on the F/A-18E/F Super Hornet. In June, the Navy placed a $23.4 million order for 50 pre-production units of the Blackbeard missile, which is expected to cost around $384,000 each, significantly lower than existing hypersonic weapons.1011

Key Insight
“Castelion plans to use the new funding to boost production of its Blackbeard hypersonic missile and develop a longer-range precision strike weapon. The U.S. Navy has emerged as its main customer, awarding Castelion approximately $50 million to advance Blackbeard toward operational capability.”
CuriousCats studied:
1
WSJWSJ
“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.”
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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 →
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