Ernst Theodor Sack works as a Partner at Blue Bear Capital. The firm's known portfolio counts 14 companies.
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Investment focus
- Focus
- AI InfrastructureAerospaceAnalyticsAsset ManagementBatteryClean EnergyClean TechClean and Renewable EnergyComputer VisionCybersecurityDataData AnalyticsElectric VehicleEnergy InfrastructureEnterprise SaaSGreenTechIndustrialInsurTechIoTMachine LearningMarine TechnologyNatural ResourcesRoboticsSolarSupply Chain ManagementTransportation
Contacts
Affiliated funds' portfolios
Partner at Blue Bear Capital, whose known portfolio counts 14 companies
- Ocient
- Hydrosat
- Unnatural Products
- Warp
- Topanga.io
- ImpriMed
- Splight Tech
- Energy Robotics
- First Resonance
- Raptor Maps
- Nuclearn
- ACCURE Battery Intelligence
- and 2 more
Investor Profile
Ernst Theodor Sack is listed against sectors AI, Climate, Commerce and FinTech, and focus areas AI Infrastructure, Aerospace, Analytics and Asset Management in the database.
Stage-wise, the deals at Blue Bear Capital cluster around Growth, Seed and Series A rounds.
The firm portfolio and the focus above give founders context on whether Ernst Theodor Sack matches their raise.
Colleagues at Blue Bear Capital
Martin Rajcan
Advisor
London, United Kingdom
Vaughn Blake
Partner
Los Angeles, United States
Peter Gutman
Investor
London, United Kingdom
Paige Carratturo
Investor
Mill Valley, United States
Hayley Nystrom
Investor
Los Angeles, United States
Carolin Funk
Investor
San Francisco, United States
Thomas Ferguson
Investor
Jackson, United States
Frequently asked questions
Who is Ernst Theodor Sack?
Ernst Theodor Sack is a venture capital investor based in Jackson, Wyoming, United States, listed as Partner at Blue Bear Capital. The known portfolio of that firm counts 14 companies. That portfolio belongs to the firm, not to Ernst Theodor Sack personally.
What does Ernst Theodor Sack invest in?
Listed sectors include AI, Climate, Commerce and FinTech; listed focus areas include AI Infrastructure, Aerospace, Analytics and Asset Management. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Ernst Theodor Sack invest at?
Blue Bear Capital appears in Growth, Seed and Series A rounds across its known deals, and Ernst Theodor Sack is listed there as Partner. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Ernst Theodor Sack listed at?
Ernst Theodor Sack is listed as Partner at Blue Bear Capital. 7 other people in the database share a firm with Ernst Theodor Sack.
How do I contact Ernst Theodor Sack?
An email address, a phone number and a LinkedIn page are on file for Ernst Theodor Sack. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal