Story perspectives

Castelion Raises $1 Billion, Valued at $13 Billion

8/21/2026

Summary

Castelion Funding

Castelion raised $1 billion in Series C funding, valuing the company at $13 billion.
$800 million equity was included in the financing round.
$250 million revolving-credit facility was added, co-led by Andreessen Horowitz, Carlyle Group and JPMorgan Chase’s Strategic Investment Group.
Castelion will expand the 1,000-acre Project Ranger plant in New Mexico to boost Blackbeard missile output.
The firm aims to field the Blackbeard hypersonic strike missile by 2027 after securing over $500 million in U.S. military contracts.

Summary

Pentagon Hypersonics

Pentagon shifts to high-rate, lower-cost hypersonics to build large inventories against China and Russia.
Castelion reuses propulsion, guidance and manufacturing to cut costs and accelerate hypersonic rollout.
Project Ranger will operate 21 buildings and aim to produce several thousand missiles each year at full capacity.
By December 2025 Castelion completed more than 25 hypersonic flight tests.
Castelion and Saronic plan a 2027 Blackbeard launch from the autonomous Marauder surface vessel.

History

Historical Context

NASA’s Hyper-X program flew the X-43A scramjet in 2004, reaching Mach 9.6 for a brief interval and proving air-breathing hypersonic thrust. That breakthrough built on earlier milestones such as the 1949 Bumper rocket (Mach 6.7) and the 1961 X-15 flights (over Mach 6). Today, U.S. defense and private firms pursue similar mass-produced hypersonic missiles, echoing the 2004 test’s impact.

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Castelion Funding

Castelion raised $1 billion in Series C funding, valuing the company at $13 billion.
$800 million equity was included in the financing round.
$250 million revolving-credit facility was added, co-led by Andreessen Horowitz, Carlyle Group and JPMorgan Chase’s Strategic Investment Group.
Castelion will expand the 1,000-acre Project Ranger plant in New Mexico to boost Blackbeard missile output.
The firm aims to field the Blackbeard hypersonic strike missile by 2027 after securing over $500 million in U.S. military contracts.

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