Erik Kriessmann(@ekriessmann):Castelion has earned trust and credibility by demonstrating technology that creates an asymmetric advantage and can be built at speed, cost, and scale. They’ve turned ambitious promises into flight-tested hardware and real production capacity for critical national security priorities. We believe they’re building one of the most important defense companies of this generation. Pumped to double down and proud to keep backing this exceptional team. 🇺🇸

Erik Kriessmann

@ekriessmann

Partner at @Altimetercap. Prev. @indexventures @khoslaventures Views are my own. Curiosity is key. Embrace the climb.

Joined August 2010

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Erik Kriessmann@ekriessmann

2026.08.19 22:20

Castelion has earned trust and credibility by demonstrating technology that creates an asymmetric advantage and can be built at speed, cost, and scale. They’ve turned ambitious promises into flight-tested hardware and real production capacity for critical national security priorities. We believe they’re building one of the most important defense companies of this generation. Pumped to double down and proud to keep backing this exceptional team. 🇺🇸