Castelion Valuation, Funding & Investors

Castelion is valued at $13B as of August 2026.

Last Castelion valuation

$13B

Series C · Aug 2026

Last Castelion funding round

$800M

Series C · Aug 2026

Cumulative funding Castelion raised

$1.2B

across 5 funding rounds

Key investors in Castelion

  • Lavrock Ventures
  • BlueYard Capital
  • Andreessen Horowitz
  • Lightspeed Venture Partners
  • First In
  • Champion Hill Ventures

Castelion Overview

About Castelion

Castelion is a Los Angeles-based defense technology company developing modern hardware for national security applications. It focuses on affordability, scalability, and supply chain robustness in areas like hypersonic systems and missile defense, backed by venture capital.


Founded

2022

HQ

United StatesLos Angeles, CA

Status

Privately held

Customer focus

B2G

Revenue model

Product sales

Valuation

$13B (Aug 2026)

Castelion Valuation

Castelion is currently valued at $13B, based on its Series C in August 2026.

The $800M round was led by Andreessen Horowitz, JPMorgan Chase and Carlyle Group, with participation from General Catalyst, Interlagos Capital, Lavrock Ventures, T. Rowe Price, Altimeter Capital and 1 other investor.

Castelion's valuation has grown 4.6x from $2.8B at its Series B in December 2025 to $13B in August 2026, across 2 priced rounds.

Castelion valuation by funding round

Castelion valuation by funding round
DateStageValuation
Aug 2026Series C$13B
Dec 2025Series B$2.8B

Castelion Funding History

Castelion has raised a total of $1.2B across 5 funding rounds.

Castelion's first fundraising round was a $5M pre-seed round in April 2023. The most recent completed round was a $800M Series C in August 2026.

Castelion funding rounds

Castelion funding rounds
DateStageInvestorsRaisedValuationDeal Summary
Aug 2026Series CAndreessen Horowitz (lead); JPMorgan Chase (lead); Carlyle Group (lead); General Catalyst; Interlagos Capital; Lavrock Ventures; T. Rowe Price; Altimeter Capital; Lightspeed Venture Partners$800M$13BCastelion announced a $1 billion Series C on August 19, 2026, combining $800 million of equity financing with $250 million of committed revolving credit facility financing, and the round valued the company at $13 billion post-money. The equity financing was co-led by JPMorganChase’s Strategic Investment Group, Andreessen Horowitz, and funds managed by Carlyle, with participation from existing investors including Altimeter, Lightspeed Venture Partners, Lavrock Ventures, General Catalyst, and Interlagos, alongside new investor T. Rowe Price Associates. The capital is intended to accelerate scaled production of Blackbeard, Castelion’s first low-cost, mass-producible hypersonic strike missile, while expanding the product portfolio into longer-range strike weapons and defensive systems. The company said the financing will support production scale-up and the buildout of capabilities tied to America’s conventional deterrence and hypersonic munitions manufacturing capacity. Castelion is a defense technology company based in Torrance, California, focused on hypersonic weapons and strike systems. The company’s Series B had previously been led by Altimeter Capital and Lightspeed Venture Partners, and the new round extends support from several existing backers while bringing in additional institutional capital for manufacturing and product expansion.
Dec 2025Series BAltimeter Capital (lead); Lightspeed Venture Partners (lead); General Catalyst; Interlagos Capital; BlueYard Capital; Lavrock Ventures; Space.VC; First In; Valor Equity Partners; Cantos; Champion Hill Ventures; Avenir Group$350M$2.8BCastelion is a defense technology company founded in 2022 and headquartered in Torrance, California, specializing in advanced hypersonic weapons, strike systems, and solid rocket motors to restore U.S. conventional deterrence against adversaries like China and Russia. Its flagship product, Blackbeard, is a hypersonic weapon designed for mass production, integration with U.S. Army and Navy platforms, and rapid deployment through compressed design-to-launch cycles from years to months. On December 5, 2025, Castelion closed a $350 million Series B funding round led by Altimeter Capital and Lightspeed Venture Partners, with participation from Lavrock Ventures, Andreessen Horowitz, General Catalyst, First In, Space.VC, Cantos, BlueYard Capital, Avenir Group, Champion Hill Ventures, and Interlagos Capital. The capital will fund expansion of U.S. manufacturing, including Project Ranger—a 1,000-acre solid rocket motor facility in Sandoval County, New Mexico, capable of producing thousands of Blackbeard missiles annually and supporting hundreds of high-skilled jobs. It also supports workforce growth, integration testing, and multi-service platform demonstrations planned for 2026. In 2025, Castelion conducted over 20 development flight tests validating key subsystems like solid rocket motors, control systems, flight computers, seekers, thermal protection, and mission software, emphasizing low-cost, high-volume architectures over traditional expensive, low-volume designs. The company has secured contracts from the Air Force Research Laboratory and aims to address Pentagon priorities in hypersonic munitions production at scale. Prior rounds include a 2022 seed of $72 million and 2023 Series A of $72 million led by SVB and Altimeter, plus a January 2025 $100 million raise combining $70 million equity and $30 million debt.
Jan 2025Series ALightspeed Venture Partners (lead); Interlagos Capital; BlueYard Capital; Lavrock Ventures; Silent Ventures; Andreessen Horowitz; First In; Cantos$70M--
Oct 2023SeedAndreessen Horowitz (lead); BlueYard Capital; Lavrock Ventures; Angel Collective Opportunity Fund; First In; Champion Hill Ventures; Jackson Moses$14M--
Apr 2023Pre-seedLavrock Ventures (lead); BlueYard Capital; Jeff Crusey; Space.VC; Champion Hill Ventures; Jackson Moses$5M--

Who has invested in Castelion?

20 investors have backed Castelion across its funding rounds, including Lavrock Ventures, BlueYard Capital, Andreessen Horowitz, Lightspeed Venture Partners, First In and Champion Hill Ventures.

Lead investors include Andreessen Horowitz, JPMorgan Chase, Carlyle Group, Altimeter Capital, Lightspeed Venture Partners and 1 other investor.


Castelion Investors

Investors in Castelion by funding rounds participated
InvestorHQRoundsRoleFirst check
Lavrock VenturesUnited StatesWashington, DC5LeadApr 2023
BlueYard CapitalGermanyBerlin4ParticipantApr 2023
Interlagos CapitalUnited StatesLos Angeles, CA3ParticipantJan 2025
Andreessen HorowitzUnited StatesSan Francisco, CA3LeadOct 2023
Lightspeed Venture PartnersUnited StatesSan Francisco, CA3LeadJan 2025
First InUnited StatesWashington, DC3ParticipantOct 2023
Champion Hill VenturesUnited StatesRaleigh, NC3ParticipantApr 2023
General CatalystUnited StatesSan Francisco, CA2ParticipantDec 2025
Space.VCUnited StatesAustin, TX2ParticipantApr 2023
Altimeter CapitalUnited StatesSan Francisco, CA2LeadDec 2025
CantosUnited StatesSan Francisco, CA2ParticipantJan 2025
Jackson MosesUnited StatesDallas, TX2ParticipantApr 2023
Jeff Crusey--1ParticipantApr 2023

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Castelion Competitors

Castelion competitors include listed companies like Embraer, Indra Sistemas, BWX Technologies and LIG Defense&Aerospace, and private ones like Shield AI and Helsing.

Public and private companies comparable to Castelion
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
EmbraerBrazilBrazilPublicly listed$7.6B$604M$13B1.7x
Shield AIUnited StatesSan Diego, CAPrivate$540M-$13B23.5x
Indra SistemasSpainSpainPublicly listed$6.3B$695M$13B1.6x
BWX TechnologiesUnited StatesUnited StatesPublicly listed$3.2B$548M$13B4.1x
LIG Defense&AerospaceSouth KoreaSouth KoreaPublicly listed$3.1B$299M$11B3.6x
HelsingGermanyMunichPrivate$502M-$18B35.9x

Castelion Public Comps

Castelion is still privately-owned, but its public comps include Embraer, Indra Sistemas, BWX Technologies, Moog, LIG Defense&Aerospace, Huntington Ingalls Industries, Hanwha Systems, Hensoldt, Leonardo DRS and Korea Aerospace Industries.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Embraer$7.6B$604M1.8x1.7x23.2x13.4x
Indra Sistemas$6.3B$695M2.0x1.6x17.7x12.1x
BWX Technologies$3.2B$548M4.6x4.1x27.1x23.3x
Moog$3.9B$488M3.1x2.8x24.8x18.5x
LIG Defense&Aerospace$3.1B$299M4.0x3.6x41.9x30.6x
Huntington Ingalls Industries$12B$1.2B1.1x1.1x11.4x13.1x
Hanwha Systems$2.7B$233M4.4x3.9x50.8x39.3x
Hensoldt$2.8B$449M4.1x3.7x25.9x19.9x

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Common questions about Castelion

When was Castelion founded?Castelion was founded in 2022.
Where is Castelion headquartered?Castelion is headquartered in Los Angeles, CA, United States.
Is Castelion publicly listed?No, Castelion is a private, VC-backed company.
What is Castelion's valuation?Castelion was last valued at $13B in its Series C in August 2026.
How much funding has Castelion raised?Castelion has raised $1.2B across 5 funding rounds.
What was Castelion's last funding round?Castelion's last funding round was a $800M Series C in August 2026, led by Andreessen Horowitz, JPMorgan Chase and Carlyle Group.
Who are Castelion's investors?Castelion's investors include Lavrock Ventures, BlueYard Capital, Interlagos Capital, Andreessen Horowitz, Lightspeed Venture Partners, First In, Champion Hill Ventures, General Catalyst, Space.VC, Altimeter Capital and 10 others.
Which companies are comparable to Castelion?Companies comparable to Castelion include Embraer, Shield AI, Indra Sistemas, BWX Technologies, LIG Defense&Aerospace and Helsing.

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