Castelion

Torrance, United States

Castelion is a defense tech company that applies modern hardware development and manufacturing processes to national security challenges.

$350.0M raised

Dec 2025

Series B

Top Investors

Andreessen HorowitzGeneral CatalystLightspeed Venture PartnersValor Equity PartnersCantos

19,000+ verified contacts

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How much funding has Castelion raised?

Castelion has raised $350.0M in total funding. The most recent round was Series B. The last funding was announced in December 2025.

Who are Castelion's investors?

Castelion's investors include Andreessen Horowitz, General Catalyst, Lightspeed Venture Partners, Valor Equity Partners, Cantos.

Where is Castelion headquartered?

Castelion is headquartered in Torrance, United States.

What does Castelion do?

Castelion is a defense tech company that applies modern hardware development and manufacturing processes to national security challenges.

What stage is Castelion at?

Castelion is at the Series B stage.

Cite this page

Free to use in articles, research, and reference works. Stable URL — will not change. Data on this page last updated December 5, 2025.

MLA

"Castelion — Funding & Investors." VCBacked, December 5, 2025, https://www.vcbacked.co/company/castelion. Accessed June 8, 2026.

APA

VCBacked. (2025). Castelion — Funding & Investors. Retrieved June 8, 2026, from https://www.vcbacked.co/company/castelion

Wikipedia (cite web)

{{cite web |title=Castelion — Funding & Investors |url=https://www.vcbacked.co/company/castelion |website=VCBacked |access-date=June 8, 2026}}

Profile data sourced and verified per the VCBacked methodology. Last funding round dated December 5, 2025.