Justin Butler
InvestorPartner at Eclipse Ventures
San Francisco Bay Area
Writes $200K – $5M checks · typically $2.5M
Contact· self-published, not guessed
Experience
- StealthBuildingcurrent2026 — present
- American Cancer SocietyBoard Membercurrent2026 — present
- Capstan MedicalBoard Membercurrent2023 — presentSanta Cruz, California, United States
- Nucleus RadiopharmaBoard Member, Foundercurrent2022 — present
- Kathryn Butler FoundationFoundercurrent2017 — present
- Watchmaker GenomicsBoard Observer2022 — 2025
- Rune LabsBoard Member2021 — 2025
- SafelyYouBoard Member2021 — 2025
- CellaresBoard Member2019 — 2025
- EclipsePartner2015 — 2025Palo Alto, California
- SpellBoard Member2018 — 2022
- Misfit WearablesVP, Commercial Development2013 — 2015San Francisco Bay Area
- Synthetic GenomicsDirector of Business Development2011 — 2013La Jolla, CA
- DuPontProcess Engineer2007 — 2009
- Gas Reaction TechnologiesChemical Engineer2007
Skills & more
Product Development76Research24Business Development73Entrepreneurship99Strategic Planning50
From Justin's professional profile.
Colleagues at Eclipse Ventures
Aidan Madigan-Curtis
Partner at Eclipse Ventures
Allyson Johnson
Partner at Eclipse Ventures
Amir Frenkel
Venture Partner at Eclipse Ventures
Angela Hayward
Partner and Head of Strategy at Eclipse Ventures
Charly Mwangi
Partner at Eclipse Ventures
Erin Greenwood
Senior Executive Assistant and Events Coordinator at Eclipse Ventures
Esther Kim
Director of Community Operations at Eclipse Ventures
Greg Lyon
VP of Marketing at Eclipse Ventures
Network1
Investors connected to Justin in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Justin Butler?
- Partner at Eclipse Ventures
- Where does Justin Butler work?
- Justin Butler is Partner at Eclipse Ventures.
- What check size does Justin Butler write?
- Justin Butler typically writes checks of $200K – $5M.
- Where did Justin Butler go to school?
- Justin Butler studied at MIT Sloan School of Management (MBA); UC Santa Barbara (Bachelor of Science, Chemical Engineering).
Founder mafias
MIT Sloan School of Management mafia91
Also came through, then founded or led a company.
Carmichael RobertsMaster of Business Administration (MBA)Founded Lyratherapeutics +1Vicky BindraMBAFounded Pine Labs +1Julián MeloInnovate the future - Executive programFounded Ubits +1Gleb ChuvpiloFinancial Technology Option (FTO)Founded Authy +1Ben BrittMaster of Business Administration (MBA)Founded Sundayhealth +1Surojit ChatterjeeMBAFounded Ema +1
+ 84 more
UC Santa Barbara mafia61
Also came through, then founded or led a company.
Logan GreenBAFounded Lyft +1Nils ReggeBAFounded Developx +2Michael WitzbaFounded Mob Science +2Brett GibsonBAFounded Slinkset +1Ivan BercovichPhDFounded Unwrap +1Zheng XuPh.D.Founded SolarCity +1
+ 54 more
Safely You mafia3
Also came through, then founded or led a company.
Same school
Also attended MIT Sloan School of Management518
Doug LeonePartner at Sequoia Capital; former Global Managing PartnerHemant TanejaCEO & Managing Director of General CatalystBrad FeldCo-founder of Foundry and TechstarsChris MorrisProcess Specialist, Exit Readiness at Mayfair Equity PartnersBirgitteInvestor at InvestinorOlaInvestor at Investinor
+ 512 more
Also attended UC Santa Barbara235
Logan GreenCo-founder of LyftArturo LitvinHead of Global Portfolio Development at Intel CapitalKevin ThauInvestor at Spark CapitalErica DelamareInvestor at DaphniTiffany ChandraVice President, Head of Talent Network at Sapphire VenturesStephanie DuranInvestor at True Ventures
+ 229 more
Shared employers
Also worked at Rune Labs3
Also worked at SafelyYou8
Joanne ChenInvestor at Foundation CapitalEvan WijayaPrincipal at Touring CapitalKelly ChenPartner at NATO Innovation FundScott BarclayManaging Director, Healthcare at Insight PartnersKelly ChenPartner at DCVC (Data Collective)Geordie GrahamFounder at Ruta Health
+ 2 more
