How much funding has Castelion raised?

Castelion has raised $464.2M in total funding. Key investors include Altimeter Capital; Lightspeed Venture Partners; Lavrock Ventures; Andreessen Horowitz; General Catalyst; First In; Space VC; Cantos; BlueYard; Avenir; Champion Hill; Interlagos; Silicon Valley Bank.

Who is the CEO of Castelion?

Bryon Hargis is the CEO of Castelion. The company was founded in 2022.

Where is Castelion located?

Castelion is headquartered in Torrance, CA, USA.

What products does Castelion offer?

Castelion's key products include: Blackbeard hypersonic weapon system.

What funding stage is Castelion at?

Castelion is currently at the Growth Stage stage.

How many employees does Castelion have?

Castelion has approximately 51-200 employees.

Castelion

Name: AM Companies Database
Creator: AMPulse
License: https://creativecommons.org/licenses/by/4.0/

ApplicationTorrance, CA, USAFounded 2022· One of 381 Application companies tracked by AMPulse

Develops hypersonic strike weapons (e.g., Blackbeard) using additive manufacturing and automation for mass production, targeting defense applications with rapid iteration and vertical integration.

CEO / Founder: Bryon Hargis
Team Size: 51-200
Stage: Growth Stage
Total Funding: $464.2M
Latest Round: Series B
Key Investors: Altimeter Capital; Lightspeed Venture Partners; Lavrock Ventures; Andreessen Horowitz; General Catalyst; First In; Space VC; Cantos; BlueYard; Avenir; Champion Hill; Interlagos; Silicon Valley Bank

Technology & Products

Key Products

Blackbeard hypersonic weapon system

Technological Advantage

Proprietary AM processes for hypersonic components (claimed to reduce lead times and costs); defensible through trade secrets and government contracts; replicable by competitors but with high barriers due to scale and integration.

Differentiation

Value Proposition

Reduces hypersonic weapon production lead times and costs through AM-enabled scalable manufacturing, enabling over 1,000 missiles annually with iterative design cycles and high-cadence testing.

How They Differentiate

Focuses on AM-enabled hypersonic weapon production vs. traditional precision manufacturing; 3x faster iteration cycles through vertical integration and testing; targets mass production (1,000+ missiles/year) vs. niche ordnance.

Market & Competition

Target Customers

U.S. Department of Defense (Army, Navy, Air Force), allied defense agencies

Industry Verticals

Aerospace; Defense

Competitors

General Dynamics OTS Anniston; Action; Nammo Pocal; Greene Metal Products

Growth & Milestones

Growth Metrics

Revenue reported at $51.5M in 2025 with 97 employees; secured $50M U.S. Navy contract in 2026; Project Ranger campus expected to create 300+ jobs.

Major Milestones

Founded in November 2022; Raised $14.2M pre-seed in 2023; Secured $100M Series A in 2024; Closed $350M Series B in December 2025; Awarded $50M U.S. Navy contract in February 2026; Launched Project Ranger manufacturing campus in New Mexico

Notable Customers

U.S. Army, U.S. Navy

https://www.castelion.com

Recent coverage of Castelion

The U.S. Navy awarded Castelion a $50 million contract to advance the Blackbeard hypersonic system toward operational status by late 2027.Feb 28, 2026

Why this company matters

Castelion develops hypersonic strike weapons such as the Blackbeard system, using additive manufacturing and automation to shift defense production from low-volume, high-cost precision machining to scalable, iterative manufacturing. Founded in 2022 and based in Torrance, California, the company applies a vertically integrated model that combines metal AM, automated assembly, and rapid flight testing to compress development cycles and reduce per-unit costs.

The company's core technology centers on proprietary metal AM processes for hypersonic components, which it claims can cut lead times and costs compared to traditional forging and machining. Castelion targets production of over 1,000 missiles annually, a volume that requires repeatable AM workflows and automated post-processing. The company relies on trade secrets rather than patents to protect its process know-how, a defensible strategy given the high barriers to replicating its integrated production system.

Castelion's primary customer is the U.S. Department of Defense, with active contracts from the Army, Navy, and Air Force. A $50 million Navy contract awarded in February 2026 underscores early government confidence. The company also partners with Manufacturo for manufacturing execution software and is building the Project Ranger campus in New Mexico, expected to create over 300 jobs. Its team of roughly 100 employees, many from SpaceX and other aerospace primes, brings a commercial hardware development ethos to defense contracting.

The company has raised $464.2 million from investors including Altimeter Capital, Lightspeed Venture Partners, and Andreessen Horowitz. Revenue reached $51.5 million in 2025. Castelion competes with traditional ordnance manufacturers such as General Dynamics OTS Anniston and Nammo Pocal, differentiating through AM-enabled iteration cycles that it claims are three times faster than conventional methods. The open question is whether the company can sustain production reliability at scale and secure follow-on contracts beyond initial awards.