Ernst Sack
InvestorPartner at Blue Bear Capital Partners · Board director at Nuclearn · Board director at Axiom Cloud · Board director at Datch
Jackson, Wyoming, United States
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
Board director at Nuclearn
Intro paths
→
In turn, Ernst can intro founders to Nuclearn's investors below.
Nuclearn's investors · 5
Co-founders at Nuclearn
JV
Jerrold VincentCo-Founder & CFO
BF
Bradley FoxCo-Founder & CEO
Board director at Axiom Cloud
Intro paths
→
In turn, Ernst can intro founders to Axiom Cloud's investors below.
Axiom Cloud's investors · 9
Blue Bear Capital PartnersJackson · since 2022Brighter CapitalCupertino · $25K – $100K checksFrontier Venture CapitalBoulder · $50K – $500K checksLeadout CapitalPortola Valley · $250K – $1.5M checksLorimer VenturesBrooklyn · $50K – $300K checksMomenta VenturesLucerneToshiba Tecsince 2024Ulu VenturesPalo Alto · $2M checksVela PartnersSan Francisco · $100K – $500K checks
Co-founders at Axiom Cloud
AR
AMRIT ROBBINSExecutive Officer, Director
Board director at Datch
Intro paths
→
In turn, Ernst can intro founders to Datch's investors below.
Datch's investors · 6
Co-founders at Datch
BP
Ben PurcellCTO
MF
Mark FosdikeCEO
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
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
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
Lord Browne of Madingley
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 and Board director at Nuclearn and Board director at Axiom Cloud and Board director at Datch.
- 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 School668
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
+ 662 more
Also attended London Business School541
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
+ 535 more
Also attended Georgetown University404
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 VenturesTed LeonsisFounder & Partner, Revolution Growth at Revolution
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+ 398 more
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