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Castelion
Torrance, US · Founded 2022 · Delaware corporation · 21 known investors
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Castelion designs and manufactures low-cost, mass-producible hypersonic strike weapons and defensive systems for U.S. national security and defense customers such as the U.S. Navy. The company vertically integrates core technologies with an emphasis on manufacturability, rapid iteration, and high-volume production.
Founders & leadership
Castelion was founded in 2022 by Bryon Hargis, Sean Pitt, Andrew Kreitz, and Charles Bryon Hargis.
Board
Investors · 21
How we know: 7percent Ventures's portfolio page · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: a16z's portfolio · a partner's Signal profile · Not right? Tell us
How we know: Avenir Growth Capital's portfolio page · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: BlueYard Capital's portfolio page · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Cantos Ventures's portfolio page · Not right? Tell us
How we know: Champion Hill Ventures's portfolio page · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
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How we know: General Catalyst's portfolio page · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Lavrock Ventures's portfolio page · a partner's Signal profile · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Lightspeed Venture Partners's portfolio page · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Silent Capital's portfolio page · Not right? Tell us
How we know: SpaceVC's portfolio page · Not right? Tell us
How we know: Sparq Capital (SFO)'s portfolio page · Not right? Tell us
How we know: open dataset · 5k.vc investor directory · Not right? Tell us
How we know: the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: open dataset · 5k.vc investor directory · Not right? Tell us
How we know: a partner's Signal profile · Not right? Tell us
How we know: the VCSheet dataset · Not right? Tell us
Reported raises · per SEC filings
Form D private placements$1.1B disclosed across 5 rounds · 2023–2026
▶$647MraisedAug 2026 · 17 investors · Other TechnologyRule 506(b)
- Charles Bryon HargisExecutive Officer, Director, Promoter
- Sean Tucker Orion PittExecutive Officer, Director, Promoter
- Andrew Jonathan KreitzExecutive Officer, Director, Promoter
- Alex PoulinDirector
- Offering amount
- $800M
- Amount sold
- $647M
- First sale
- Aug 2026
- Incorporated
- Corporation, Delaware, 2022
- Federal exemptions
- 06b
▶$60MraisedNov 2025 · 8 investors · Other TechnologyRule 506(b)
- Sean Tucker Orion PittExecutive Officer, Director, Promoter
- Andrew Jonathan KreitzExecutive Officer, Director, Promoter
- Alex PoulinDirector
- Charles Bryon HargisExecutive Officer, Director, Promoter
- Offering amount
- $60M
- Amount sold
- $60M
- First sale
- Nov 2024
- Incorporated
- Corporation, Delaware, 2022
- Federal exemptions
- 06b
▶$360MraisedNov 2025 · 30 investors · Other TechnologyRule 506(b)
- Charles Bryon HargisExecutive Officer, Director, Promoter
- Andrew Jonathan KreitzExecutive Officer, Director, Promoter
- Sean Tucker Orion PittExecutive Officer, Director, Promoter
- Alex PoulinDirector
- Offering amount
- $360M
- Amount sold
- $360M
- First sale
- Aug 2025
- Incorporated
- Corporation, Delaware, 2022
- Federal exemptions
- 06b
▶$8.6MraisedOct 2023 · 17 investors · Other TechnologyRule 506(b)
- Charles Bryon HargisExecutive Officer, Director, Promoter
- Andrew Jonathan KreitzExecutive Officer, Director, Promoter
- Sean Tucker Orion PittExecutive Officer, Director, Promoter
- Alex PoulinDirector
- Offering amount
- $8.6M
- Amount sold
- $8.6M
- First sale
- Sep 2023
- Incorporated
- Corporation, Delaware, 2022
- Federal exemptions
- 06b
▶$5.4MraisedApr 2023 · 20 investors · Other TechnologyRule 506(b)
- Sean Tucker Orion PittExecutive Officer, Director, Promoter
- Alex PoulinDirector
- Charles Bryon HargisExecutive Officer, Director, Promoter
- Andrew Jonathan KreitzExecutive Officer, Director, Promoter
- Offering amount
- $5.5M
- Amount sold
- $5.4M
- First sale
- Apr 2023
- Incorporated
- Corporation, Delaware, 2022
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Founder mafia
3 people who came through Castelion went on to found or lead other companies.
Related companies · 3
Companies working in the same space as Castelion.
Non-dilutive funding · 2 SBIR/STTR awards
Federal grants — no equity taken| Agency | Phase | Year | Amount |
|---|---|---|---|
| U.S. Air ForceAir Force | Phase II | 2023 | $1.8M |
| U.S. Air ForceAir Force | Phase II | 2023 | $1.7M |
Source: SBIR.gov award data (U.S. Small Business Administration). SBIR/STTR awards are competitive federal R&D grants and contracts — non-dilutive capital alongside any venture rounds above.
In the news
Frequently asked questions
- What does Castelion do?
- Castelion designs and manufactures low-cost, mass-producible hypersonic strike weapons and defensive systems for U.S. national security and defense customers such as the U.S. Navy. The company vertically integrates core technologies with an emphasis on manufacturability, rapid iteration, and high-volume production.
- Who founded Castelion?
- Castelion was founded by Bryon Hargis, Sean Pitt, Andrew Kreitz, Charles Bryon Hargis in 2022.
- Who are Castelion's investors?
- Castelion's investors include 7percent Ventures, Andreessen Horowitz, Angel Collective Opportunity Fund, Avenir Growth Capital, BlueYard Capital, Cantos Ventures, Champion Hill Ventures, General Catalyst and 13 more.
- How much funding has Castelion raised?
- Castelion has disclosed $1.1B raised across 5 rounds.
- Where is Castelion headquartered?
- Castelion is headquartered in Torrance, US.