Fundraising Fox

Hooman Radfar

Investor

Partner at Expansive Ventures

San Francisco, California

Writes $25K – $50K checks Β· typically $25K

FoundedCollective

About

Hooman Radfar is a computer scientist and founder who serves as co-founder, CEO, and chairman of Collective, a platform for solopreneurs. He is a venture partner at Expa, where he works with founders from Uber, Foursquare, and Twitter, and operates 10e9, a personal investment platform with stakes in companies including Stripe, OpenAI, and SpaceX. He previously founded AddThis, a web publishing platform acquired by Oracle in 2016, which at the time of acquisition served 15 million publishers and reached nearly 2 billion unique viewers.

LinkedIn β†—X / Twitter β†—Website β†—
Latest on 𝕏

Hooman @hoomanradfar

Memos or decks for Series C AI companies? Thoughts appreciated.

Apr 27, 2026 Β· β™₯ 1

Hooman @hoomanradfar

Big ups to @garrytan for calling this out. AI is real. Many companies are doing incredible things not just from a tech POV, but also on revenue growth. That said, the misrepresentation of the business health is something that I've noticed an unfortunate uptick in. It's not https://t.co/lSfKxubyAN

Apr 26, 2026 Β· β™₯ 3

Hooman @hoomanradfar

@naveen @GradientVC @HustleFundVC @SigniaVC @levie @samyamiam @aplusk

Apr 22, 2026 Β· β™₯ 4

Experience

  1. CollectiveCo-Founder, CEO and Chairmancurrent2020 β€” presentSan Francisco Bay Area
  2. ExpaVenture Partnercurrent2020 β€” presentSan Francisco Bay Area
  3. ExpaFounding Partner2014 β€” 2020San Francisco Bay Area
  4. 10e9Founder & Managing Partnercurrent2013 β€” presentSan Francisco
  5. AddThisExecutive Chairman of the Board2012 β€” 2015
  6. AddThisCo-Founder & CEO2006 β€” 2012McLean, Virginia

Education

  1. Carnegie Mellon UniversityMaster of Science - MS, Electrical & Computer Engineering - Information Networking2002 β€” 2004
  2. University of PennsylvaniaBachelor of Science & Engineering - BSE, Computer Science & Engineering
  3. University of PennsylvaniaBachelor of Arts - BA, Economics
  4. Upper St. Clair High School

Skills & more

CRM5Publishing7Video5User Experience Design3Venture Financing10Product Design3Data Monetization1Online Advertising65Market Entry1Social Media69Social Networking33Executive Management11
+12 moreProduct DevelopmentAngel InvestingEarly-stage StartupsMarketingEntrepreneurshipStart-upsMergersChange ManagementStrategic PlanningPublic SpeakingLeadershipStrategy

Languages Farsi Β· Spanish

From Hooman's professional profile.

Founder mafias

Carnegie Mellon University mafia214

Also came through, then founded or led a company.

William GuttmanDistinguished Service Professor of Economics & Special Advisor to ProvostFounded CurvePoint +3Rodney BrooksResearch ScientistFounded Rethink Robotics +2Dr. Manu KumarMSFounded Hi Hello +1Blake SchollBSFounded Boom +1Venkat ViswanathanAssociate ProfessorFounded Aionics +1Sheel MohnotBachelor of Science - BSFounded Thistle +1

+ 207 more

University of Pennsylvania mafia186

Also came through, then founded or led a company.

Scott Wolf, MDBAFounded Cardiac Dimensions +3Trevor PriceB.A.Founded Docent Health +2Ben LererBSFounded Thrillist +1Eric HeilBSEFounded Ladderbio +1Lyle BerkowitzBSEFounded Apollo Health +1Hari SundramDoctor of Medicine (MD)Founded Write Wise +1

+ 179 more

Expa mafia8

Also came through, then founded or led a company.

Russ d'SaEmployee 1Founded Meetyu +2Robin ChanAdvisorFounded Operator +1Garrett CampFounding PartnerFounded Aero +1Luke GroesbeckBuilding ThingsFounded Foundation +1Jake SeipOperator in ResidenceFounded Aero +1Naveen SelvaduraiVenture PartnerFounded Foursquare

+ 1 more

Expansive Ventures mafia2

Also came through, then founded or led a company.

Garrett CampFounded Aero +1

Same school

Also attended Carnegie Mellon University384

Javier SolteroSenior Venture Partner at Felicis VenturesAvi BharadwajInvestment Director at Intel CapitalOren EtzioniVenture Partner at Madrona Venture GroupDiana HuGeneral Partner at Y CombinatorVlad LoktevInvestor at Index VenturesJon ChuInvestor at Khosla Ventures

+ 378 more

Also attended University of Pennsylvania773

Dasha MaggioPartner at Felicis Ventures, writer on venture capital and founder psychologyNancy WangInvestor at Felicis VenturesLeah von SiemensPartner at Manta Ray VenturesEghosa OmoiguiFounder and Managing General Partner at EchoVC PartnersAkshat GoenkaInvestor at Moonfire VenturesJames KuklinskiInvestor at Spark Capital

+ 767 more

Also attended Upper St. Clair High School1

Jane LippencottGeneral Partner at VOLT CAPITAL

Shared employers

Also worked at Collective8

Jake FuchsPrincipal at Fin CapitalS.K. LeeExecutive Coach at Roble VenturesJake FuchsInvestor at BankTech VenturesFrost PrioleauCo-Founder & Chair, Simpli.fi at The 98Kamran AnsariVenture Partner at Infinity VenturesHagi SchwartzLP Advisory Board at Fusion VC

+ 2 more

Also worked at Expa20

Arjun AroraInvestor at Streamlined VenturesJenny HeFounder & General Partner at Position VenturesRobin ChanInvestor at Goat CapitalSteve JangManaging Partner at Kindred VenturesGeorge RadfordPrincipal at Frontline VenturesGarrett CampFounding Partner at Expa

+ 14 more

Also worked at AddThis3

Maurice BoissiereChief Customer Officer, DataTribe at University System of Maryland Momentum FundKent WakefordInvestor at Gen.GKey ComptonManaging Director at GPO Fund

Colleagues at Expansive Ventures

Dave Clark
Partner at Expansive Ventures
Garrett Camp
Founding Partner at Expa

Network2

Dave Clark
Partner at Expansive Ventures
Garrett Camp
Founding Partner at Expa

Investors connected to Hooman in public investor directories β€” a warm-intro map.

Frequently asked questions

Where does Hooman Radfar work?
Hooman Radfar is Partner at Expansive Ventures.
What check size does Hooman Radfar write?
Hooman Radfar typically writes checks of $25K – $50K.
What companies did Hooman Radfar found?
Hooman Radfar founded Collective.