Cy Sack

Active Investor

Head of ArsenalOS at Anduril Industries

North Bend, Washington

Cy Sack, Head of ArsenalOS at Anduril Industries is an active investor based in North Bend, Washington. This profile covers what Cy Sack backs, at which stage, and how founders can reach out in 2026.

Investor type: Angel
Stages: Pre SeedSeed
Invests in: Healthcare & BiotechSaaS & EnterpriseConsumer & RetailCybersecurityIoT & Connected DevicesManufacturing & IndustrialMobility & LogisticsSupply Chain & Logistics
Location: North Bend, Washington
Typical check: $150K
Past investments: 1

Notable investments

WeWork

How to reach Cy Sack

Angels and operators like Cy Sack reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.

Frequently Asked Questions

What does Cy Sack invest in?

Cy Sack invests in Healthcare & Biotech, SaaS & Enterprise, Consumer & Retail and Cybersecurity, typically at Pre Seed and Seed. Match your sector and stage, then reach out with a personalized pitch.