What Is Castelion’s Valuation in 2026? $13B After $1B

Castelion is worth $13 billion after a $1 billion Series C on August 19, 2026. That package is $800 million of equity plus a $250 million committed revolver. JPMorganChase’s Strategic Investment Group, Andreessen Horowitz, and Carlyle co-led.

Unexpected truth: Google still ranks the December 2025 $350 million Series B and The Information’s ~$12 billion target. The live company mark is $13 billion. Revenue was not disclosed.

This page is for people deciding whether Castelion (or this hypersonic-manufacturing lane) is worth another hour. Last verified August 20, 2026. Fact vs our read is labeled below.

Five-minute decision

Investigate further when: you believe the scarce asset is magazine depth at commercial unit cost, and $13B is a factory print, not a software mark.

Wait or pass when: your bar is disclosed units/year, or you think Anduril already occupies the defense-tech allocation that would fund a hypersonic specialist.

What happened

Do not treat $1 billion as all equity. The company splits $800 million stock and $250 million credit.

What Castelion actually does

Product (company): Blackbeard, described as the first American hypersonic missile engineered from the start for industrial-rate output and commercial unit cost. Manufacturing includes mixing its own propellant in New Mexico (Lightspeed quote).

Job: give the U.S. and allies hypersonic strike in quantity, not a handful of exquisite rounds.

Three spend lines in the PR:

1. More Blackbeard at and beyond the 1,000-acre Project Ranger campus (Sandoval County, NM). Company: largest dedicated hypersonic missile plant in the U.S.; >$250 million already spent privately; “hundreds of millions more” now.
2. Longer-range precision strike that reuses Blackbeard tech — a cheaper complement to large exquisite systems.
3. Air and missile defense products using the same manufacturing model (magazine depth).

Saronic overlap (June 11, 2026 company note): Saronic and Castelion said they will demonstrate maritime hypersonic launch from Saronic autonomous surface vessels, targeting 2027. That is a demo plan, not a disclosed offtake.

How big is Castelion actually?

Contracts in aggregate, not a P&L. That is the most useful number on this page besides $13 billion.

Worked numbers (indicative)

1. Setup: Dec 5, 2025 — $350M Series B to mass-produce Blackbeard.
2. Move: Aug 19, 2026 — $800M equity at $13B, plus $250M credit for a production company.
3. Punch: If $800M is new primary at $13B post, implied dilution is about 6.2% ($800M / $13B). That is headline arithmetic, not a disclosed option pool or preference stack. The revolver does not dilute.

Same-month defense tape (not Castelion’s P&L): Neros printed $2.5B on August 11. Heaviside printed $600M on August 12. Anduril is $61B after May’s $5B Series H. Castelion sits between Neros and Anduril on price, and next to Heaviside on Southern California munitions.

Castelion vs Anduril — what differs

Choose Castelion when you are underwriting hypersonic production. Choose Anduril when you are underwriting a software-defined defense conglomerate. Do not mash the two $B marks.

Castelion vs Neros: both Torrance-area manufacturers raising in August 2026. Neros is attritable drones at $2.5B. Castelion is hypersonic missiles at $13B. Same week, different payloads.

Why investors likely wrote $800M

Known evidence (company + named quotes)

• >$500M in U.S. military contracts over 18 months (company).
• Program of record in under four years; 2027 fielding target.
• Project Ranger already took >$250M of private infrastructure spend.
• Katherine Boyle (a16z): factory in New Mexico and a production agreement with the department named in her quote.
• Ravi Mhatre (Lightspeed): led Series A before a complete system had flown; now “shipping hardware to the services.”
• Bank + PE + venture in one syndicate (JPM, Carlyle, a16z) — credit sits next to equity because this is a plant.

Our interpretation (not an IC memo)

What we cannot claim: a revenue multiple, units/year, or that Interlagos’s “thousands a year” is current run-rate.

What has to be true for Castelion to win

1. 2027 fielding happens with enough rounds to matter, not a ceremony.
2. Project Ranger’s extra “hundreds of millions” actually raise output.
3. The longer-range and defensive products do not dilute Blackbeard execution.
4. The >$500M contract total converts on schedule.
5. JPM/Carlyle credit stays available if working capital spikes.

What could break the thesis

• Hypersonic test or production slips past the 2027 language.
• Primes match cost at a volume Castelion cannot finance.
• The $13B mark was a scarcity print that later public comps will not pay.
• Mixing $800M equity and $250M debt in Slack as “$1B of dilution.”

When not to use this page

• Do not treat $13B as the December 2025 figure. December was the $350M B.
• Do not treat The Information’s ~$12B target as the live mark.
• Carlyle, JPM, Lavrock, Interlagos, and T. Rowe are not in our fund directory.
• Do not use Interlagos’s “thousands a year” as a company unit disclosure.
• Do not confuse this ALSO-week physical AI tape with ALSO the Rivian spinout.

Where to go next

Month tape: August 2026 VC news. Same-day mobility: ALSO $150M Series D. Defense stack: Anduril $61B, Neros $2.5B, Heaviside $600M, Saronic $9.25B. Entity: Castelion. a16z map: hot portfolio.