Fundraising Fox
Find your path to William
10,168 people in our graph share verified history with William — schools, employers, funds. One of them is your warm intro.
Julien BekunlockedWilliam: together at Auctor (2026)
William: together at YC X25
×10William: together at Y Combinator
About
William Sun is co-founder and CEO of Auctor AI.
Founder at AuctorYC X25
Intro paths
YC
William went through Y Combinator (Spring 2025) — any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Pete Koomen, General Partner at Y Combinator — the partner who ran Auctor's batch and knows the company first-hand. YC profile ↗
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In turn, William can intro founders to Auctor's investors below.
Auctor's investors · 6
HubSpot VenturesCambridge · $500K – $5M checks · since 2026M12 (Microsoft's Venture Fund)Seattle · $100K – $10M checks · since 2026Sequoia CapitalMenlo Park · $4.4M – $214M checks · since 2026Venture Investment AssociatesPeapackWorkday VenturesSan Francisco · since 2026Y CombinatorSan Francisco · $150K checks · since 2025
Co-founders at Auctor
Experience
- AuctorCEO / Co-Foundercurrent2024 — presentNew York City
- FiOR MedicalCo-Founder2022 — 2023Baltimore
Skills & more
Python (Programming Language)15Java15Competitive Analysis21Machine Learning19Market Analysis20Teamwork16Interpersonal Communication16Analytical Skills14Computer Vision15Problem Solving16
From William's professional profile.
Frequently asked questions
- Who is William Sun?
- William Sun is co-founder and CEO of Auctor AI.
- Where does William Sun work?
- William Sun is Founder of Auctor.
- What companies did William Sun found?
- William Sun founded Auctor.
- Where did William Sun go to school?
- William Sun studied at The Johns Hopkins University; Y Combinator; The Ohio State University (High School Dual Enrollment Student, Computer Science).
Founder mafias
Y Combinator mafia10,522
Also came through, then founded or led a company.
The Johns Hopkins University mafia212
Also came through, then founded or led a company.
Dave JohnsonMaster's degreeFounded Dash BioC. Giovanni TraversoPhDFounded Teal Bio +5Paul GrossingerBachelor of ArtsFounded Zogcroer +4Christoph LengauerPostdocFounded Celsius Therapeutics +3Merrill AnovickB.A. with HonorsFounded Lynd Clinical +2Anne OsdoitMaster of Science (MS)Founded Moon Surgical +2
The Ohio State University mafia139
Also came through, then founded or led a company.
Same school
Also attended The Johns Hopkins University540
Dave JohnsonCo-founder & CEO of Dash BioNicole GaudelliEntrepreneur in Residence at GV (Google Ventures)Wes NicholsPartner at March Capital PartnersDemi ObayomiPrincipal at Sapphire VenturesNicole FraenkelInvestor at Khosla VenturesElena VibochManaging Director at General Catalyst
+ 534 more
Also attended Y Combinator2,000
Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyArhaan A.Deeptech Fellow at Clear VenturesCollin WallaceGeneral Partner at Lobby CapitalVictor SantosVictor Scout at One Way Ventures
+ 1,994 more
Also attended The Ohio State University304
Keatten SmithCapital Formation Coordinator at March Capital PartnersSara Risch, PhDAdvisor at CincyTechWill McKelveyPrincipal at Lerer HippeauLaura SebastianiVP of Finance at Scale Venture PartnersSuresh BalasubramanianInvestor at Storm VenturesJohn D. SimonExecutive Venture Partner at Caduceus Capital Partners
+ 298 more