Where does John Vrionis work?

John Vrionis is Co-founder of Unusual and Co-Founder & Managing Partner at Unusual Ventures and Co-founder/Partner, Unusual Ventures at Resolve AI and Board director at Rime and Board director at Rasgo Intelligence.

What check size does John Vrionis write?

John Vrionis typically writes checks of $100K – $15M.

What boards does John Vrionis sit on?

John Vrionis holds tracked board seats at Arrikto, CloudBees, DataStax, Rasgo Intelligence, Rime.

Where did John Vrionis go to school?

John Vrionis studied at Stanford University Graduate School of Business (MBA, General Management); University of Chicago (MS, Computer Science); Harvard University (BA, Economics).

John Vrionis

InvestorFounder

Co-Founder & Managing Partner at Unusual Ventures · Co-founder/Partner, Unusual Ventures at Resolve AI · Board director at Rime · Board director at Rasgo Intelligence

Menlo Park, California

Writes $100K – $15M checks · typically $250K

FoundedUnusual

Midas 2019 · #63 Midas 2018 · #99 Midas 2017 · #46

Find your path to John

1,765 people in our graph share verified history with John — schools, employers, funds. One of them is your warm intro.

Adam ValkinunlockedJohn: together at Harvard University (1993–1996)

John: together at ABN AMRO Venture Capital

John: together at University of Chicago

×9John: together at Stanford University Graduate School of Business

About

Co-founder of Unusual Ventures who was Jyoti Bansal's first investor at AppDynamics; has invested in over 30 startups reaching billion-dollar outcomes and teaches product-market fit at Stanford GSB.

Contact· self-published, not guessed

j•••@unusual.vcreveal

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

j•••@unusual.vcreveal100% confident
j•••@unusual.vcreveal70% confident

Invests in

AI & Machine LearningCybersecurityData & InfrastructureDeveloper ToolsEnterprise SoftwareFintechSaaS

Beyond investing

Founded: Vrionis founded Unusual Ventures, an early-stage venture capital firm.
Education: Studied at Stanford Graduate School of Business (MBA, 2006) Studied at University of Chicago (MS, Computer Science, 2001) Studied at Harvard University (AB, Economics, 1997)
Communities: Vrionis is a faculty affiliate at Stanford GSB's Center for Entrepreneurial Studies and a guest lecturer for CS 210 at Stanford University. Vrionis is an adjunct professor at the University of Notre Dame.
Hobbies: Vrionis played professional soccer in the USA and UK from 1997 to 1999.
More: Vrionis is originally from Georgia.

Mentioned above: the University of Chicago mafia → · the Unusual Ventures mafia → · the Unusual mafia →

From published sources — common ground for a warm intro.

Co-founder/Partner, Unusual Ventures at Resolve AI

Intro paths

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In turn, John can intro founders to Resolve AI's investors below.

Resolve AI's investors · 9

A*San Francisco · $500K – $3M checks Amjad Masad Artisanal VenturesTiburon DST GlobalGeorge Town, Grand Cayman · $100K – $200M checks · since 2026 Greylock PartnersSan Francisco · $100K – $200M checks Lightspeed Venture PartnersMenlo Park · $1.7M – $87M checks Salesforce VenturesSan Francisco · $5M – $50M checks · since 2026 Srinivas Narayanan Unusual VenturesMenlo Park · $1M – $15M checks

Co-founders at Resolve AI

Spiros XanthosFounder and CEO

Mayank AgarwalFounder and CTO

Board director at Rime

Intro paths

→

In turn, John can intro founders to Rime's investors below.

Rime's investors · 7

Corazon CapitalChicago · $150K – $500K checks · since 2026 M13New York · $4M – $7M checks · since 2026 M13 VenturesBeverly Hills · since 2026 Moth FundSan Francisco SEEDRA VenturesRiyadh · $120K – $35M checks · since 2026 Twilio Ventures$1M – $5M checks · since 2026 Unusual VenturesMenlo Park · $1M – $15M checks · since 2026

Co-founders at Rime

Lily CliffordCo-founder

Brooke LarsonCo-founder

Board director at Rasgo Intelligence

Intro paths

→

In turn, John can intro founders to Rasgo Intelligence's investors below.

Rasgo Intelligence's investors · 2

Insight PartnersNew York · $120M – $350M checks · since 2021 Unusual VenturesMenlo Park · $1M – $15M checks · since 2020

Co-founders at Rasgo Intelligence

Jared ParkerExecutive Officer, Director

Charles Patrick DoughertyExecutive Officer, Director

Experience

Stanford University Graduate School of BusinessLecture Faculty - Entrepreneurshipcurrent2024 — presentPalo Alto, CA
Unusual VenturesFounder and Managing Partnercurrent2018 — presentSan Francisco Bay Area
Lightspeed Venture PartnersGeneral Partner2006 — 2017Menlo Park, California
Determina, Inc. (acq VMware)Product Management2004 — 2005
AchieveDirector of Product Management2003 — 2005San Mateo, California, United States
ABN AMRO Venture CapitalSr. Associate2000 — 2003
Professional SoccerSoccer1997 — 1999US, England

Skills & more

SaaS10Enterprise Software33Product Management44Venture Capital26Entrepreneurship39Security7Data Center6Storage4Entrepreneur2Networking3Business Planning6Start-ups41

+9 more

Cloud ComputingE-commerceProduct MarketingMobile DevicesStrategic PartnershipsBusiness DevelopmentBusiness IntelligenceStrategic PlanningManagement

From John's professional profile.

Deals · 4

CloudBeesBoard seat

via Unusual Ventures · filed Jul 2024 · $966K raise

DataStaxBoard seat

via Unusual Ventures · filed May 2021 · $37.6M raise

ArriktoBoard seat

via Unusual Ventures · filed Aug 2020 · $10M raise

press ↗

Rasgo IntelligenceBoard seat

via Unusual Ventures · filed Jul 2020 · $5M raise

Attribution from SEC filings, press coverage, and firm rosters.

Other disclosed investments

Board seats

Rime

Investor

Alpha Vantage AppDynamics Arctic WolfArctic Wolf NetworksAscend.ioBanyan SecurityBarefoot NetworksBluBracketBoundary CartaChalkCitadel Defense CompanyClick SecurityCO2 AICoscreenDatos IoEmbraneFluidCloudHallowHarnessHireXperienceHumanSignal KespryLaunchableLiftoff.ioMemMulesoftNeonNiciraNimble StorageOliver AIPaxtonPinterestRelyance AIResolve AIResolve.aiRevel TouchRobinhoodRoboto AISocketStreamlioTraceableVivun

Sources: SEC Form D filings · curated public sources · the firm's website.

Colleagues at Unusual Ventures

Andy Youn

Director of Finance at Unusual Ventures

Bill Hodak

Investor at Unusual Ventures

Brett Teele

Chief Financial Officer & Partner at Unusual Ventures

Calvin Ling

VP of Finance at Unusual Ventures

Doug Regner

Investor at Unusual Ventures

Eric Peter

Venture Partner and AI Specialist at Blockchain Builders

Henry Buckingham

Vice President at Unusual Ventures

Jared Waxman

Operating Partner at Unusual Ventures

Network3

Andy Price

Founder, General Partner at Artisanal Ventures

Carlos Neto

Investor at Bright Pixel Capital

Eric Peter

Venture Partner and AI Specialist at Blockchain Builders

Investors connected to John in public investor directories — a warm-intro map.

Frequently asked questions

Who is John Vrionis?: Co-founder of Unusual Ventures who was Jyoti Bansal's first investor at AppDynamics; has invested in over 30 startups reaching billion-dollar outcomes and teaches product-market fit at Stanford GSB.
Where does John Vrionis work?: John Vrionis is Co-founder of Unusual and Co-Founder & Managing Partner at Unusual Ventures and Co-founder/Partner, Unusual Ventures at Resolve AI and Board director at Rime and Board director at Rasgo Intelligence.
What does John Vrionis invest in?: John Vrionis invests in AI & Machine Learning, Cybersecurity, Data & Infrastructure, Developer Tools, Enterprise Software, Fintech, SaaS.
What check size does John Vrionis write?: John Vrionis typically writes checks of $100K – $15M.
What companies did John Vrionis found?: John Vrionis founded Unusual.
What boards does John Vrionis sit on?: John Vrionis holds tracked board seats at Arrikto, CloudBees, DataStax, Rasgo Intelligence, Rime.
What companies has John Vrionis invested in?: Investments tracked here include Alpha Vantage, AppDynamics, Arctic Wolf, Arctic Wolf Networks, Ascend.io, Banyan Security, Barefoot Networks, BluBracket, Boundary, Carta, Chalk, Citadel Defense Company, and 33 more.
Where did John Vrionis go to school?: John Vrionis studied at Stanford University Graduate School of Business (MBA, General Management); University of Chicago (MS, Computer Science); Harvard University (BA, Economics).