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Castelion - Careers & Company Profile | BuildList

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Castelion

Scales modern defense manufacturing.

DefenseSeries B

HQ

El Segundo, CA

Founded

2022

Employees

51-200

Total Raised

$479.6M

Last Round

Series B

Last Round Date

Aug 2025

Founders

Andrew Kreitz, Sean Pitt, Bryon Hargis

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