Furientis, a Los Angeles-based defense technology startup, has stepped out of stealth with a plan to address what it describes as a growing shortage of affordable U.S. interceptor missiles. The company announced a $5 million pre-seed financing round led by Silent Ventures, with participation from Bessemer Venture Partners, SV Angel and additional investors tied to the defense technology ecosystem. The announcement positions Furientis in a fast-moving segment of national security technology focused on replenishing defensive munitions at lower cost and higher volume.
Funding and Strategic Context
The company is entering the market at a time when recent conflicts have highlighted the economic strain of using expensive interceptors against lower-cost drones and missiles. Furientis has pointed to the 2024 Red Sea crisis as an example of the challenge, saying the U.S. Navy used more than 200 interceptor missiles while facing threats that can cost far less to produce. Investor commentary on LinkedIn echoed that theme, framing the company’s opportunity around depleted stockpiles, slow replenishment cycles and the need for manufacturable defensive systems.
Product Development
Furientis is developing ship-based interceptor systems designed around scalable manufacturing rather than limited-volume production. The company says it is already flight-testing demonstrator platforms and has completed six flight tests and 10 static-fire tests over the past six months. Its approach centers on rapid design, testing and iteration, with the goal of narrowing the gap between the cost and availability of defensive systems and the threats they are intended to defeat.
Team and Facilities
Founded in 2025, Furientis is led by co-founders Brody Franzen and Aris Simsarian, both of whom bring experience in rocket engineering, propulsion and testing. Simsarian previously worked in propulsion and rocket engine testing at Virgin Orbit, while Franzen held engineering roles at Virgin Galactic and later worked at Castelion, a defense startup focused on hypersonic missiles. Furientis operates from a 9,000-square-foot Los Angeles facility and plans to use the new capital to expand early production, accelerate testing and hire across engineering, manufacturing and operations.
Defense Partnerships
The company has also begun building relationships with U.S. defense stakeholders, including partnerships with the U.S. Navy and U.S. Army. Earlier this year, Furientis was named one of five finalists in the Tactical Missile Innovation Challenge run by the Naval Postgraduate School and the Office of Naval Research, alongside companies including Anduril and Kratos. The Navy’s account of the challenge described it as a program seeking more affordable, adaptable and production-ready approaches to tactical missile development.
Furientis’ emergence reflects a broader shift in defense technology toward systems that can be built quickly, produced at scale and matched economically against lower-cost threats. While the company remains early-stage, its funding, testing cadence and government-facing partnerships give it a foothold in a market where procurement speed and manufacturing capacity are becoming central concerns. Its next test will be whether it can translate prototype progress and investor backing into reliable interceptor production at the scale U.S. defense planners increasingly require.