TORRANCE, Calif. - Castelion, a defense technology company, announced that it raised $350 million in Series B financing, positioning the company to directly advance hypersonic munitions production at scale.
The capital raise supports critical technical and manufacturing milestones — integrating Castelion's first hypersonic weapon, Blackbeard, with U.S. Army and U.S. Navy operational platforms, building its Project Ragner production and final-assembly facility and multi-service platform testing in 2026.
"Blackbeard helps close America's hypersonic capability gap against China and Russia," Castelion CEO and Co-Founder Bryon Hargis said. "This funding lets us build fast, test often and produce at volumes that matter in the real world."
The company's latest investment round enables Castelion to expand manufacturing and workforce development across the U.S.:
- Project Ranger (Sandoval County, New Mexico): Tooling, commissioning and production ramp at the 1,000-acre solid rocket motor manufacturing campus announced in November. The facility will be capable of producing thousands of Blackbeard missiles per year and support hundreds of industrial high-skilled jobs in the region.
- Test Cadence and Platform Integration: Continuing high-tempo test cadence in 2026 with increasingly complex capability demonstrations and integration with operational launch platforms.
- Follow-on System Development: Parallel maturation of a second hypersonic product line, leveraging shared low-cost subsystem infrastructure.
In 2025, Castelion conducted more than 20 development flight tests, validating weapon-critical subsystems including internally manufactured solid rocket motors, control actuation systems, flight computers, seekers, thermal protection materials and mission software. Each campaign focuses on low-cost, mass-producible architectures, which replace designs historically built in low volumes, at extreme cost or only on multi-year timelines.
Castelion's approach reportedly compresses design-to-launch cycles from years to months and establishes the industrial base required for high-rate missile production, not boutique inventory.
