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Companies / Castelion

Castelion

Torrance, United States

Castelion designs, tests, and manufactures next-generation military systems rapidly and at massive scale to deter future wars.

AI & Machine Learning

Castelion, based in Torrance, United States, has 23 investors on file, among them 7percent Ventures, Altimeter and Ambition Capital. Its latest round on record is Series C+, 19 Aug 2026, of 3 rounds. Its site was last checked 13 Nov 2026: site answers.

castelion.com

Funding

3 rounds on record
Latest roundSeries C+19 Aug 2026
Since that round3 monthsno later round on record
Time between rounds1 year 5 monthson average, over 3 rounds
Investors in its rounds158 with a VCinfo profile
Aug 2026Series C+Led by Andreessen Horowitz, The Carlyle Group, JPMorgan Chase, with Lightspeed Venture Partners, Altimeter, General Catalyst, Lavrock Ventures and 2 others
Jul 2025Series BLed by Lightspeed Venture Partners, with Altimeter, Battery Ventures and 1 other
Oct 2023SeedLed by Andreessen Horowitz, with BlueYard Capital, Champion Hill Ventures, Lavrock Ventures and 1 other

Round sizes and total raised are on Fundup AI, our sister product for funding data.

Investors

23 investors on file
InvestorEvidenceType
7percent VenturesPortfolio pageVenture capital
AltimeterPortfolio pageVenture capital
Ambition CapitalPortfolio pageVenture capital
Andreessen HorowitzPage + roundVenture capital
Angel Collective Opportunity FundPortfolio pageVenture capital
AvenirPortfolio pageVenture capital
Battery VenturesPortfolio pageVenture capital
BlueYard CapitalPage + roundVenture capital
CantosPortfolio pageVenture capital
Champion Hill VenturesPage + roundVenture capital
DataPower VenturesPortfolio pageVenture capital
FDVCPortfolio pageVenture capital
First InPortfolio pageVenture capital
Flux CapitalPortfolio pageVenture capital
General CatalystPage + roundVenture capital
IceNinePortfolio pageVenture capital
Koru CapitalPortfolio pageVenture capital
Lavrock VenturesPortfolio pageVenture capital
Lightspeed Venture PartnersPage + roundVenture capital
New VistaPortfolio pageVenture capital
Nomi CapitalPortfolio pageVenture capital
Silent VenturesPortfolio pageVenture capital
Traction FundPortfolio pageVenture capital

A company is shown only after its own site answers and carries its name. Sites are checked again on a schedule, because domains lapse and get bought. Round stages and dates come from Fundup AI; investor links come from portfolio pages and rounds; other facts name their source when you point at them. How we grade the data

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VCinfo API
$ curl -H "X-API-Key: YOUR_KEY" \
  https://api.vcinfo.io/v1/companies/castelion.com/investors

# also
GET /v1/companies/castelion.com
GET /v1/companies/castelion.com/news
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