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- Castelion
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
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
Website
Status
Privately held
Customer focus
B2G
Revenue model
Product sales
Valuation
$13B (Aug 2026)
Sectors
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
| Date | Stage | Valuation |
|---|---|---|
| Aug 2026 | Series C | $13B |
| Dec 2025 | Series 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
| Date | Stage | Investors | Raised | Valuation | Deal Summary |
|---|---|---|---|---|---|
| Aug 2026 | Series C | Andreessen Horowitz (lead); JPMorgan Chase (lead); Carlyle Group (lead); General Catalyst; Interlagos Capital; Lavrock Ventures; T. Rowe Price; Altimeter Capital; Lightspeed Venture Partners | $800M | $13B | Castelion 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 2025 | Series B | Altimeter 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 | $2.8B | Castelion 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 2025 | Series A | Lightspeed Venture Partners (lead); Interlagos Capital; BlueYard Capital; Lavrock Ventures; Silent Ventures; Andreessen Horowitz; First In; Cantos | $70M | - | - |
| Oct 2023 | Seed | Andreessen Horowitz (lead); BlueYard Capital; Lavrock Ventures; Angel Collective Opportunity Fund; First In; Champion Hill Ventures; Jackson Moses | $14M | - | - |
| Apr 2023 | Pre-seed | Lavrock 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
| Investor | HQ | Rounds | Role | First check |
|---|---|---|---|---|
| 5 | Lead | Apr 2023 | ||
| 4 | Participant | Apr 2023 | ||
| 3 | Participant | Jan 2025 | ||
| 3 | Lead | Oct 2023 | ||
| 3 | Lead | Jan 2025 | ||
| 3 | Participant | Oct 2023 | ||
| 3 | Participant | Apr 2023 | ||
| 2 | Participant | Dec 2025 | ||
| 2 | Participant | Apr 2023 | ||
| 2 | Lead | Dec 2025 | ||
| 2 | Participant | Jan 2025 | ||
| 2 | Participant | Apr 2023 | ||
| -- | 1 | Participant | Apr 2023 | |
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Start Free TrialCastelion Competitors
Castelion competitors include listed companies like Embraer, Indra Sistemas, BWX Technologies and LIG Defense&Aerospace, and private ones like Shield AI and Helsing.
| Company | HQ | Status | Revenue | EBITDA | Valuation | Revenue Multiple |
|---|---|---|---|---|---|---|
| Publicly listed | $7.6B | $604M | $13B | 1.7x | ||
| Private | $540M | - | $13B | 23.5x | ||
| Publicly listed | $6.3B | $695M | $13B | 1.6x | ||
| Publicly listed | $3.2B | $548M | $13B | 4.1x | ||
| Publicly listed | $3.1B | $299M | $11B | 3.6x | ||
| Private | $502M | - | $18B | 35.9x |
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 FY | EV/Revenue | EV/EBITDA | ||||||
|---|---|---|---|---|---|---|---|---|
| Revenue | EBITDA | Last FY | LTM | 2027E | Last FY | LTM | 2027E | |
| $7.6B | $604M | 1.8x | 1.7x | 23.2x | 13.4x | |||
| $6.3B | $695M | 2.0x | 1.6x | 17.7x | 12.1x | |||
| $3.2B | $548M | 4.6x | 4.1x | 27.1x | 23.3x | |||
| $3.9B | $488M | 3.1x | 2.8x | 24.8x | 18.5x | |||
| $3.1B | $299M | 4.0x | 3.6x | 41.9x | 30.6x | |||
| $12B | $1.2B | 1.1x | 1.1x | 11.4x | 13.1x | |||
| $2.7B | $233M | 4.4x | 3.9x | 50.8x | 39.3x | |||
| $2.8B | $449M | 4.1x | 3.7x | 25.9x | 19.9x | |||
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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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