Sam Rosenblum
InvestorVice President of Operations at Phantom
Idaho
Writes $100K – $5M checks · typically $1.5M
Find your path to Sam
430 people in our graph share verified history with Sam — schools, employers, funds. One of them is your warm intro.
Paul FieldingunlockedSam: together at UCLA (2006–2008)
×7Sam: together at Coinbase
×2Sam: together at UCLA
×2Sam: together at Haun Ventures
Experience
- PhantomVice President of Operationscurrent2025 — presentSan Francisco Bay Area
- Haun VenturesPartner2022 — 2025San Francisco Bay Area
- Polychain CapitalPartner2019 — 2021San Francisco Bay Area
- CoinbaseDirector of Business Development2014 — 2019San Francisco Bay Area
- VisaGlobal Strategy Associate2013 — 2014San Francisco Bay Area
- Lake Partners Strategy ConsultantsAnalyst2011 — 2013Greater Seattle Area
- U.S. Department of JusticeM&A Specialist2010 — 2011Washington DC-Baltimore Area
Colleagues at Phantom
Network1
Investors connected to Sam in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Sam Rosenblum?
- Partner at Haun Ventures
- Where does Sam Rosenblum work?
- Sam Rosenblum is Vice President of Operations at Phantom.
- What check size does Sam Rosenblum write?
- Sam Rosenblum typically writes checks of $100K – $5M.
- Where did Sam Rosenblum go to school?
- Sam Rosenblum studied at UCLA (B.A.).
Same school
Also attended UCLA1,018
Ben HorowitzCo-founder & General Partner at Andreessen HorowitzKirsten GreenFounder and Managing Partner at Forerunner VenturesVlad TenevCo-founder & CEO of RobinhoodRyan KingCo-founder of ChimePaul FieldingFinance & Operations at General CatalystMelody MaExecutive Assistant and Lead Receptionist at Trinity Ventures
+ 1,012 more
Shared employers
Also worked at Haun Ventures11
Stephanie WatkinsOperations at 8VCBreck StodghillPartner at Haun VenturesChris AhnPartner at Haun VenturesDiogo MónicaCo-founder at Anchorage DigitalChris LehaneBoard Member at Coinbase VenturesMark BeylinPrincipal at Haun Ventures
+ 5 more
Also worked at Polychain Capital20
Bobby BeniersPrincipal at CoinFundJulian FernándezInvestment Associate at Bloccelerate VCWill KantarosResearch Advisor at ArchetypePeterVenture Partner at NascentRob WitoffChief Technology Officer at Coinbase VenturesNiraj PantVenture Partner at Hack VC
+ 14 more
Also worked at Coinbase189
Balaji SrinivasanAngel investor and founder of The Network SchoolFred EhrsamCo-founder and Senior Advisor at Paradigm; founder of NudgeBrian ArmstrongCo-founder & CEO of CoinbaseJanet WolpertInvestor at Index VenturesKatrina PagliaChief Legal Officer at Pantera CapitalSimon CantInvestor at Reinventure Group
+ 183 more
Also worked at Visa144
Chris BrittCo-founder & CEO of ChimeRajat TanejaInvestor at Foundation CapitalTodd ChaffeeInvestor at IVP (Institutional Venture Partners)Tony WellsVenture Partner at Copper Sky CapitalKaren SheffieldFounder & Managing Partner at Pachamama VenturesChris DegierePartner, Data Intelligence Group at TCV
+ 138 more