Castelion
Torrance, US · Founded 2022 · Delaware corporation · 16 known investors
Castelion develops advanced strike systems and defense hardware with a focus on rapid iteration and scalable manufacturing to reduce costs and development timelines for U.S. defense applications. The company aims to restore American industrial agility in weapons development and strengthen national security capabilities.
Advanced ManufacturingDefense TechHardware
Founders & leadership
Castelion was founded in 2022 by Bryon Hargis, Sean Pitt, and Andrew Kreitz.
Board
AP
Investors · 16
7percent VenturesLondon · $250K – $2M
Andreessen HorowitzMenlo Park · $500K – $50M
Angel Collective Opportunity FundSan Francisco
Avenir Growth CapitalNew York
BlueYard CapitalBerlin · $500K – $5M
Cantos VenturesSan Francisco · $400K – $1.5M
Champion Hill Ventures$500K – $1M
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General CatalystSan Francisco · $30M
IceNineLondonvia Jeff Crusey · inferred
Lavrock VenturesWashington
Lightspeed Venture PartnersMenlo Park · $1.7M – $87M
NEW VISTA CAPITALWashington
SpaceVCAustin · $1M – $5Mvia Jonathan Lacoste · inferred
Sparq Capital (SFO)Palo Alto
First InreportedWashington · $500K – $2M
Silent VenturesreportedDallas · $1.5M – $3Mvia Jackson Moses · inferred
Reported raises · per SEC filings
Form D private placements$434M disclosed across 4 rounds · 2023–2025
▶$60MraisedNov 2025 · 8 investors · Other TechnologyRule 506(b)
▶$60MraisedNov 2025 · 8 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- 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)
▶$360MraisedNov 2025 · 30 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- 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)
▶$8.6MraisedOct 2023 · 17 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- 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)
▶$5.4MraisedApr 2023 · 20 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- 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.
Competitors · 3
by search overlapLockheedmartin33 shared keywordsLockheed Martin is a defense and aerospace company that develops military aircraft and advanced technology systems for government and defense customers. Its work includes programs such as the F-35 fighter jet and experimental aircraft developed through its Skunk Works division.
Breakingdefense24 shared keywordsBreaking Defense is a digital news publication covering defense industry, military technology, and national security developments, serving defense professionals, policymakers, and industry stakeholders. It publishes reporting and analysis on topics such as naval systems, drones, air defense, and defense procurement across the US, Europe, and Asia.
Interestingengineering21 shared keywordsInteresting Engineering is an online media publication covering news and analysis on engineering, science, and technology topics including nuclear energy, semiconductors, robotics, quantum computing, and defense. It offers articles, columns, case studies, and research along with a subscription for ad-free access.
Companies competing with Castelion for the same Google search keywords, organic and paid, via search-intersection analysis.
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 develops advanced strike systems and defense hardware with a focus on rapid iteration and scalable manufacturing to reduce costs and development timelines for U.S. defense applications. The company aims to restore American industrial agility in weapons development and strengthen national security capabilities.
- Who founded Castelion?
- Castelion was founded by Bryon Hargis, Sean Pitt, Andrew Kreitz 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 8 more.
- How much funding has Castelion raised?
- Castelion has disclosed $434M raised across 4 rounds.
- Where is Castelion headquartered?
- Castelion is headquartered in Torrance, US.