Justus Byok
Venture investor in Berlin
Berlin, Germany
Justus Byok, Venture investor in Berlin is an active investor based in Berlin, Germany. This profile covers what Justus Byok backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCInvestor
- Stages
- Pre SeedSeed
- Invests in
- GovTech & DefenseArtificial IntelligenceSpace & AerospaceFintechHardware & Deep TechCybersecurity
- Location
- Berlin, Germany
- Typical check
- $150K
- Past investments
- 12
Notable investments
Mercor
Plaid
Anduril IndustriesThinking Machines Lab
SpaceX
Crusoe
Commerzbank AG
LightmatterLambda
xai
Anthropic
Shield AIHow to reach Justus Byok
Angels and operators like Justus Byok 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.
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About this profile
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Cite this page
Round Funded. "Justus Byok." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/justus-byok
Frequently Asked Questions
What does Justus Byok invest in?
Justus Byok invests in GovTech & Defense, Artificial Intelligence, Space & Aerospace and Fintech, typically at Pre Seed and Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does Justus Byok invest at?
Justus Byok typically invests at Pre Seed and Seed. Lead with traction that fits the stage when you reach out.
What is Justus Byok's typical check size?
Justus Byok typically writes checks around $150K. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.