Companies
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Castelion
Aerospace & Defense
Castelion is an El Segundo, California-based defense technology company developing low-cost hypersonic missiles for the U.S. military, aiming to mass-produce weapons that have historically been extremely expensive.
$17.4B
+$701.11
63,666.29%
30 days ago
$1.10
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Castelion was founded in 2022 by Bryon Hargis and Sean Pitt, both with backgrounds at SpaceX, entering the hypersonic weapons category based on the observation that hypersonic missiles, weapons capable of traveling at more than five times the speed of sound and maneuvering unpredictably during flight, have historically been developed by traditional defense contractors at extremely high per-unit costs and low production volumes, despite growing U.S. military demand for these systems driven by concerns about the hypersonic weapons programs of geopolitical rivals including China and Russia. Castelion has applied a manufacturing philosophy drawing heavily on its founders' experience at SpaceX, emphasizing rapid iteration, vertical integration, and mass-manufacturability from the earliest stages of design, aiming to produce hypersonic missiles at a fraction of the cost and dramatically higher production volume than traditional defense contractors have achieved, a strategy consistent with the broader wave of venture-backed defense technology companies seeking to modernize military hardware procurement using more Silicon Valley-style engineering and manufacturing approaches. The company has conducted flight tests of its hypersonic strike weapon prototypes and secured contracts and interest from the U.S. Department of Defense as it works to demonstrate reliable performance at production scale. Castelion has raised substantial venture funding from investors including Founders Fund and Lockheed Martin, reaching a valuation in the billions of dollars, positioning itself alongside other venture-backed defense technology companies including Anduril and Saronic that are similarly seeking to challenge traditional defense contractors' dominance of major weapons categories.
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