Where does Don Muir work?

Don Muir is Founder of Arc and Founder at F2.

Where did Don Muir go to school?

Don Muir studied at Stanford University Graduate School of Business (Master of Business Administration - MBA); Y Combinator (W22 (Arc) + S25 (F2)); Cornell University (Dyson School of Business, Strategy & Finance).

Don Muir

Founder

Founder at F2 · Founder at Arc

San Francisco Bay Area

FoundedArc · YC F2 · YC

Find your path to Don

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

Rina AtienzaunlockedDon: together at Onex (2018–2019)

×10Don: together at Onex

Don: together at F2

About

Don Muir is co-founder and CEO of F2 and co-founder of Arc. He previously worked as a private equity investor before transitioning to entrepreneurship, with focus on AI applications in financial services.

Founder at F2 YC S25

Intro paths

Don went through Y Combinator (Summer 2025) — any YC alum in your network can reach them through the YC community.

Their group partner at YC was Jared Friedman, YC Group Partner — the partner who ran F2's batch and knows the company first-hand. YC profile ↗

→

In turn, Don can intro founders to F2's investors below.

F2's investors · 9

Alumni VenturesManchester · $100K – $10M checks · since 2025 Angel Collective Opportunity FundSan Francisco HighlandXMenlo Park · since 2026 Left Lane CapitalNew York · $5M – $75M checks · since 2026 Next Legacy PartnersPortola Valley NFXSan Francisco · $250K – $5M checks · since 2026 Sarah SmithMenlo Park · $250K checks Torch CapitalNew York · $750K – $1.5M checks · since 2026 Y CombinatorSan Francisco · $500K checks · since 2025

Co-founders at F2

Emre KazdagliFounder

Founder at Arc YC W22

Intro paths

Don went through Y Combinator (Winter 2022) — any YC alum in your network can reach them through the YC community.

Their group partner at YC was Jared Friedman, YC Group Partner — the partner who ran Arc's batch and knows the company first-hand. YC profile ↗

→

In turn, Don can intro founders to Arc's investors below.

Arc's investors · 8

Andreessen HorowitzMenlo Park · $500K – $50M checks Carya Venture PartnersPalo Alto Clocktower VenturesSanta Monica · $100K – $20M checks Left Lane CapitalNew York · $5M – $75M checks Next Legacy PartnersPortola Valley NFXSan Francisco · $250K – $5M checks Torch CapitalNew York · $750K – $1.5M checks Y CombinatorSan Francisco · $500K checks · since 2022

Co-founders at Arc

Nick LombardoFounder

Experience

F2Co-Founder & CEOcurrent2025 — presentNew York, United States
ArcCo-Founder & Board Membercurrent2025 — presentNew York, United States
ArcCo-Founder & CEO2021 — 2025San Francisco, California, United States
Apollo Global Management Inc.Private Equity2020
OnexPrivate Equity2017 — 2019
Boston Consulting Group (BCG)Management Consulting2015 — 2017

Skills & more

Artificial Intelligence (AI)7Private Equity6Private Credit3Commercial Banking42Corporate Finance45Capital Markets32

Languages English · French

From Don's professional profile.

Frequently asked questions

Who is Don Muir?: Don Muir is co-founder and CEO of F2 and co-founder of Arc. He previously worked as a private equity investor before transitioning to entrepreneurship, with focus on AI applications in financial services.
Where does Don Muir work?: Don Muir is Founder of Arc and Founder at F2.
What companies did Don Muir found?: Don Muir founded Arc, F2.
Where did Don Muir go to school?: Don Muir studied at Stanford University Graduate School of Business (Master of Business Administration - MBA); Y Combinator (W22 (Arc) + S25 (F2)); Cornell University (Dyson School of Business, Strategy & Finance).

Founder mafias

Y Combinator mafia10,230

Also came through, then founded or led a company.

Sam AltmanPresidentFounded Tools for Humanity +3 Garry TanPresident & CEOFounded Y Combinator +1 Jessica LivingstonCo-founderFounded Y Combinator Alexis OhanianPartnerFounded Reddit Fred EhrsamYC Summer 2012Founded Nudge +1 Matt HuangYC Winter 2011Founded Paradigm +1

+ 10,223 more

Stanford University Graduate School of Business mafia748

Also came through, then founded or led a company.

Steve JurvetsonMaster of Business Administration (MBA)Founded Future Ventures +1 Theresia GouwMBAFounded Early Tony XuMBAFounded DoorDash David VélezMBAFounded Nubank +1 IanMaster of Business Administration (M.B.A.)Founded Apex Technology +3 Matt RouifStanford Ignite (Summer Institute for Entrepreneurship)Founded Photoroom +3

+ 741 more

Cornell mafia535

Also came through, then founded or led a company.

John ZimmerBSFounded Lyft David SteinbergBAFounded Restorbio +3 Hanson S. Gifford, IIIBSMEFounded Miramar Labs +3 Emin Gun SirerAssociate ProfessorFounded Ava Labs +3 Uri LopatinBAFounded Assemblybio +2 Aniq RahmanB.S.Founded Ucmdigitalhealth +2

+ 528 more

F2 mafia3

Also came through, then founded or led a company.

Nick LombardoBoard MemberFounded Arc Emre KazdagliFounderFounded ScoreBeyond

Same school

Also attended Stanford University Graduate School of Business2,000

Roelof BothaAdvisor & former Steward at Sequoia Capital; SpaceX board member David SzeAdvisory Partner at Greylock Katherine BoyleGeneral Partner at Andreessen Horowitz (American Dynamism)Hunter WalkCo-founder & Partner at Homebrew Scott SandellExecutive Chairman & Chief Investment Officer at NEA Laela SturdyManaging Partner at CapitalG

+ 1,994 more

Also attended Y Combinator2,000

Tarek MansourCo-founder & CEO of Kalshi Suhail DoshiFounder of Mixpanel; founder of Particle Subomi OluwalanaCo-founder & CEO of Convoy Arhaan A.Deeptech Fellow at Clear Ventures Collin WallaceGeneral Partner at Lobby Capital Victor SantosVictor Scout at One Way Ventures

+ 1,994 more

Also attended Cornell University1,397

Jenny LeeSenior Managing Partner at Granite Asia Neeraj AgrawalGeneral Partner at Battery Ventures John ZimmerCo-founder of Lyft Michelle FernandesInvestor at Index Ventures Mike ZakInvestor at CRV (Charles River Ventures)Micah RosenbloomGeneral Partner at Founder Collective

+ 1,391 more

Shared employers

+ 112 more

Also worked at Onex26

Michael AndersonPartner at Mainsail Partners Rina AtienzaOperations Manager at Radical Ventures Katelyn ElderSenior Director of Finance at Radical Ventures Brahm KlarManaging Partner at Round13 Capital Irfhan RawjiManaging Partner at Relay Ventures Anthony Ahwai-ChangAnalyst at Teachers' Venture Growth

+ 20 more

Find your path to Don

About

Founder at F2YC S25

Intro paths

F2's investors · 9

Co-founders at F2

Founder at ArcYC W22

Intro paths

Arc's investors · 8

Co-founders at Arc

Experience

Skills & more

Frequently asked questions

Founder mafias

Y Combinator mafia10,230

Stanford University Graduate School of Business mafia748

Cornell mafia535

F2 mafia3

Same school

Also attended Stanford University Graduate School of Business2,000

Also attended Y Combinator2,000

Also attended Cornell University1,397

Shared employers

Also worked at F25

Also worked at Arc4

Also worked at Apollo Global Management Inc.118

Also worked at Onex26

Founder at F2 YC S25

Founder at Arc YC W22