Find your path to Ernst
106 people in our graph share verified history with Ernst — schools, employers, funds. One of them is your warm intro.
Mark TerbeekunlockedErnst: together at Ocient (2024–2026)
×2Ernst: together at Everactive
Ernst: together at Raptor Maps, Inc.
Ernst: together at Ocient
About
Ernst Theodor Sack focuses on AI software that boosts performance of existing energy assets—solar, wind and industrial—favoring founders with deep operational experience and picks-and-shovels tools like predictive maintenance.
Contact· self-published, not guessed
Likely email· guessed from name + firm domain, not firm-published
- e•••@bluebearcap.comreveal70% confident
Invests in
AI & Machine LearningClimate TechEnergyLogistics & Supply ChainMobility & Transportation
Experience
- Blue Bear Capital, LLCPartnercurrent2016 — presentJackson, Wyoming // Los Angeles, CA
- NuclearnBoard Director, Investorcurrent2025 — present
- The Demex GroupBoard Director, Investorcurrent2021 — present
- Avalo, IncBoard Observer, Investorcurrent2025 — present
- Raptor Maps, Inc.Board Director, Investorcurrent2019 — present
- TransectBoard Observer, Investorcurrent2020 — present
- OmnidianBoard Observer, Investorcurrent2017 — present
- OcientBoard Observer, Investorcurrent2024 — present
- Pani EnergyBoard Director, Investorcurrent2021 — present
- Shoreline WindBoard Director, Investorcurrent2017 — present
- First ResonanceBoard Observer, Investorcurrent2020 — present
- DatchBoard Member, Investorcurrent2020 — present
- Axiom CloudBoard Director, Investorcurrent2022 — present
- Copper LabsInvestorcurrent2019 — present
- VoyagerBoard Observer, Investorcurrent2019 — present
- EveractiveBoard Observer, Investorcurrent2018 — present
- GoExpediBoard Member, Investorcurrent2018 — present
- FreeWire TechnologiesInvestorcurrent2018 — present
- ElementBoard Observer, Investorcurrent2017 — present
- Mission SecureBoard Observer, Investorcurrent2017 — present
- UrbintInvestor2020 — 2025
- TruckLabsBoard Director, Investor2022 — 2023
- MiraBoard Observer, Investor2020 — 2022
- MineralSoftBoard Observer, Investor2017 — 2018
- Riverstone HoldingsPrincipal2008 — 2017New York, NY // London, UK
- Citigroup M&AAnalyst2006 — 2008New York, NY
Deals · 1
Parametrix Group Holdings, Inc.Board seat
via Blue Bear Capital Partners · filed Sep 2024 · $10.3M raise
Attribution from SEC filings, press coverage, and firm rosters.
Other disclosed investments
Board seats
Per SEC Form D filings.
Colleagues at Blue Bear Capital Partners
Alex T. Krueger
Advisor at Blue Bear Capital Partners
Carolin Funk
Partner at Blue Bear Capital Partners
Ern Sack
Promoter at Blue Bear Capital Partners
Hank Hattemer
General Counsel & COO at Blue Bear Capital Partners
Hayley Nystrom
Investor at Blue Bear Capital Partners
Jacquelynn Craw
Advisor at Blue Bear Capital Partners
Jeff Fleming
Senior Operations Associate at Blue Bear Capital Partners
Joel Moxley
Advisor at Blue Bear Capital Partners
Frequently asked questions
- Who is Ernst Sack?
- Ernst Theodor Sack focuses on AI software that boosts performance of existing energy assets—solar, wind and industrial—favoring founders with deep operational experience and picks-and-shovels tools like predictive maintenance.
- Where does Ernst Sack work?
- Ernst Sack is Partner at Blue Bear Capital Partners.
- What does Ernst Sack invest in?
- Ernst Sack invests in AI & Machine Learning, Climate Tech, Energy, Logistics & Supply Chain, Mobility & Transportation.
- What boards does Ernst Sack sit on?
- Ernst Sack holds tracked board seats at Axiom Cloud, Datch, Nuclearn, Parametrix Group Holdings, Inc..
- Where did Ernst Sack go to school?
- Ernst Sack studied at Columbia Business School (Master of Business Administration (M.B.A.)); London Business School (Master of Business Administration (M.B.A.)); Georgetown University.
Same school
Also attended Columbia Business School1,173
Ryan PetersenFounder & CEO of FlexportAryo TehranianManaging Director at Mayfair Equity PartnersYibo NianInvestment Director at Intel CapitalKesha CashFounder & General Partner at Impact America FundMahati SridharPartner, Rise of the Rest at RevolutionGiuseppe IademarcoHead of Global Partnership at P101 Ventures
+ 1,167 more
Also attended London Business School911
Patrick ClaessenPartner at Cottonwood Technology FundDominic JacquessonInvestor at Index VenturesSandra SchwarzerInvestor at Index VenturesMatt CherianVenture Partner at Monta Vista CapitalAkshat GoenkaInvestor at Moonfire VenturesGiuseppe IademarcoHead of Global Partnership at P101 Ventures
+ 905 more
Also attended Georgetown University759
Trae StephensPartner at Founders Fund and co-founder of AndurilLuciana LixandruPartner at Sequoia CapitalKatherine BoyleGeneral Partner at Andreessen Horowitz (American Dynamism)Tobi CokerDeal Partner at Felicis VenturesAna AndreescuInvestor at Index VenturesDiana BerishaInvestor at Spark Capital
+ 753 more
Shared employers
Also worked at Raptor Maps, Inc.13
Abe YokellManaging Partner and Co-Founder at Congruent VenturesCarolin FunkPartner at Blue Bear Capital PartnersEmily KirschFounder and Managing Partner at PowerhouseJohn RuffoloFounder & Managing Partner at Maverix Private EquityMohit TalwarPartner, Investments at Maverix Private EquityEddie ObroptaFounder/CTO at Raptor Maps
+ 7 more
Also worked at Omnidian10
Abe YokellManaging Partner and Co-Founder at Congruent VenturesBrock SmithManaging Director at Evergy VenturesDrew RobinsonStrategic Partner, Principal at Evergy VenturesAmer SheikhPartner at Novo HoldingsJosh CohenPartner at City LightCassie BowePartner at Energy Impact Partners
+ 4 more
