Where does Hart Lambur work?

Hart Lambur is Founder of Across and Partner at Robot Ventures and Co-founder at Risk Labs and Founder at Uma.

What check size does Hart Lambur write?

Hart Lambur typically writes checks of $100K – $5M.

What companies did Hart Lambur found?

Hart Lambur founded Across, Risk Labs, Uma.

Where did Hart Lambur go to school?

Hart Lambur studied at Columbia University (Bachelor of Science (B.Sc.), Computer Science); Upper Canada College (High School).

Hart Lambur

InvestorFounder

Partner at Robot Ventures · Founder at Risk Labs · Founder at Across · Founder at Uma

Canada

Writes $100K – $5M checks · typically $1.5M

FoundedAcross Risk Labs Uma

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Likely email· guessed from name + firm domain, not firm-published

h•••@across.toreveal75% confident

Founder at Risk Labs

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Risk Labs's investors · 1

Placeholder VCNew York · since 2018

Founder at Across

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Across's investors · 7

Blockchain CapitalSan Francisco · $25K – $200K checks Coinbase VenturesSan Francisco · $100K – $10M checks Espresso Systems Hack VCPalo Alto · $3M checks ParadigmSan Francisco · $1M – $100M checks · since 2025 Sina Habibian YAP Capital$50K – $250K checks

Founder at Uma

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Uma's investors · 4

Blockchain CoinvestorsSan Francisco Collab+CurrencyNew York IOSG VenturesHong Kong · $10K – $100K checks Lvna CapitalMiami

Experience

Risk Labs FoundationDirectorcurrent2018 — present
Across ProtocolCo-Foundercurrent2021 — present
UMACo-Foundercurrent2018 — present
Robot VenturesVenture Partnercurrent2022 — present
Founders PledgePledgercurrent2018 — present
OpenfolioCEO and Founder2013 — 2017Greater New York City Area
Goldman SachsInterest Rate Trading2005 — 2013Greater New York City Area
Columbia University in the City of New YorkResearch Assistant—Columbia Robotics Laboratory2004 — 2005New York, NY
Columbia University in the City of New YorkTeaching Assistant—Computer Science Department2004New York, NY
Goldman SachsSummer Technical Analyst2004New York, NY

Colleagues at Robot Ventures

Andy Cho

Director of Business Development at Robot Ventures

Cesar

Senior Software Engineer at Robot Ventures

Jeremy Neilson

Executive Officer at Robot Ventures

Kevin Wang

Investor at Robot Ventures

Navin Vethanayagam

Chief Brain at Robot Ventures

Richard Thoms

Executive Officer at Robot Ventures

Robert Leshner

Partner at Robot Ventures

Roberto Dobrescu

Business Developer at Robot Ventures

Frequently asked questions

Who is Hart Lambur?: Partner at Robot Ventures
Where does Hart Lambur work?: Hart Lambur is Founder of Across and Partner at Robot Ventures and Co-founder at Risk Labs and Founder at Uma.
What check size does Hart Lambur write?: Hart Lambur typically writes checks of $100K – $5M.
What companies did Hart Lambur found?: Hart Lambur founded Across, Risk Labs, Uma.
Where did Hart Lambur go to school?: Hart Lambur studied at Columbia University (Bachelor of Science (B.Sc.), Computer Science); Upper Canada College (High School).