// PERSON
Bryon Hargis
ROLE CEOAT CASTELIONMENTIONS 1LAST SEEN SEPTEMBER 11, 2026
// BIO
Bryon Hargis is the co-founder and CEO of Castelion, a defense technology startup building low-cost hypersonic missiles designed for mass production. Prior to founding Castelion in November 2022, he spent nearly six years at SpaceX as a senior director of government sales, where he built the company's national security satellite sales pipeline. He also spent over a decade at the Johns Hopkins Applied Physics Laboratory earlier in his career. He holds an M.S. in Applied Physics from Johns Hopkins and a B.S. in Mechanical Engineering from Georgia Tech.
// RECENT MENTIONS
// SIGNALS
1 SIGNAL
01
mention·Sourcery Newsletter·SEPTEMBER 11, 2026
“Bryon Hargis is the CEO of Castelion. He & I just got on the phone...”
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