Fundraising Fox

Arthur MacWaters

Founder

Founder at Legion Health

San Francisco, California, United States

FoundedLegion Health · YC

About

Arthur MacWaters co-founded Legion Health and holds a Princeton degree from 2018; he previously worked at McKinsey.

Founder at Legion HealthYC S21

Intro paths

YC

Arthur went through Y Combinator (Summer 2021) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Garry Tan, President & CEO of Y Combinator — the partner who ran Legion Health's batch and knows the company first-hand. YC profile ↗

→

In turn, Arthur can intro founders to Legion Health's investors below.

Legion Health's investors · 6

Acequia Capital (AceCap)Seattle · $100K – $5M checks · since 2024Alumni VenturesManchester · $100K – $10M checks · since 2024Next Coast VenturesAustin · $2M – $4M checksSoma CapitalSacramento · $100K – $300K checks · since 2024Stone Mountain VenturesDallas · $5M checksY CombinatorSan Francisco · $500K checks · since 2021

Co-founders at Legion Health

YPYash Patel
Yash PatelCo-Founder/CEO
DWDaniel Wilson
Daniel WilsonCo-Founder, CTO

Experience

  1. Legion HealthCo-Founder and Presidentcurrent2021 — presentAustin
  2. McKinsey & CompanySenior Business Analyst2019 — 2021Los Angeles, California

Skills & more

Public Speaking2Communication3Microsoft Word2PowerPointMicrosoft Excel1

Languages French

From Arthur's professional profile.

Frequently asked questions

Who is Arthur MacWaters?
Arthur MacWaters co-founded Legion Health and holds a Princeton degree from 2018; he previously worked at McKinsey.
Where does Arthur MacWaters work?
Arthur MacWaters is Founder of Legion Health.
What companies did Arthur MacWaters found?
Arthur MacWaters founded Legion Health.
Where did Arthur MacWaters go to school?
Arthur MacWaters studied at Princeton University (Bachelor of Arts); Y Combinator (S2021).

Founder mafias

Y Combinator mafia8,773

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Y Combinator mafia4,716

Also came through, then founded or led a company.

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McKinsey & Company mafia337

Also came through, then founded or led a company.

Elad GilConsultantFounded Brain Co.Tony XuBusiness AnalystFounded DoorDashAlexandre ProtAssociateFounded Smartven +1Inaki BerenguerAssociateFounded InfiniteWatch +2Ryan XueManagement ConsultantFounded Andco +2Max AhrensFellow InternFounded Maihem +2

+ 330 more

Princeton University mafia160

Also came through, then founded or led a company.

Ryan SheaBSEFounded StacksDario AmodeiPhDFounded AnthropicFei-Fei LiBachelor of Arts - BAFounded World LabsChristian SchadeBachelor of Arts - BAFounded Halda Therapeutics +2Emin Gun SirerB.S.E.Founded Avalanche +2Luke EvninBachelor’s DegreeFounded Mpmcapital +1

+ 153 more

Legion Health mafia3

Also came through, then founded or led a company.

Yash PatelCo-Founder/CEOFounded Legion HealthDaniel WilsonCo-Founder, CTOFounded Legion Health

Same school

Also attended Princeton University582

Fabrice GrindaCo-founder & Managing Partner at FJ LabsRyan SheaCo-founder of Blockstack (Stacks)Dario AmodeiCo-founder & CEO of AnthropicFei-Fei LiCo-founder & CEO of World Labs; Sequoia Professor of Computer Science at StanfordAndrewAdvisor at Clear VenturesChristal NgAssociate at Golden Gate Ventures

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Also attended Y Combinator2,000

Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyMaroof AhmedFounder at Octopus VenturesJustin SwartPartner at Bitkraft Esports VenturesCollin WallaceGeneral Partner at Lobby Capital

+ 1,994 more

Shared employers

Also worked at Legion Health3

Aabhas KhannaGeneral Partner at MyAsiaVCYash PatelCo-Founder/CEO at Legion HealthDaniel WilsonCo-Founder, CTO at Legion Health

Also worked at McKinsey & Company1,549

Elad GilSolo general partner investing through Gil CapitalJim BreyerFounder & CEO of Breyer CapitalAnn Miura-KoCo-founding Partner at FloodgateJeremy LiewPartner at Lightspeed Venture PartnersMike SpeiserManaging Director at Sutter Hill VenturesJeremy LevinePartner at Bessemer Venture Partners

+ 1,543 more