About
Arvid Lunnemark co-founded Anysphere, the company behind the AI code editor Cursor, in 2022 with three MIT classmates, and became a billionaire on its $29.3 billion Series D — then left in October 2025, months before SpaceX's record $60 billion acquisition, to found Integrous Research, an AI-safety lab. A Swede from Malmö who won IOI gold for Sweden in 2018, he studied mathematics and computer science at MIT and writes about cryptography and surveillance risk at arvid.xyz.
Beyond investing
- Founded
- Lunnemark co-founded Anysphere in 2022 with Michael Truell, Sualeh Asif, and Aman Sanger, developing the AI-assisted code editor Cursor. Co-founded Anysphere/Cursor in 2022; the only co-founder to leave before the SpaceX acquisition, departing October 2025. Founded Integrous Research in October 2025, an AI-safety research lab.
- Education
- Studied at Massachusetts Institute of Technology
- Awards
- Lunnemark won a gold medal at the 2018 International Mathematical Olympiad, representing Sweden. Lunnemark won a silver medal at the 2017 International Olympiad in Informatics, representing Sweden. IOI silver medalist (2017) and gold medalist (2018) for Sweden.
- Hobbies
- Writes essays, principles, and a commonplace book at arvid.xyz; deeply interested in cryptography and data-surveillance risks.
- Family
- Grew up in Malmö, Sweden.
- More
- Lunnemark is from Malmö, Sweden, and attended school in Sweden before moving to the United States for university. After leaving Cursor in October 2025, Lunnemark stated he intended to focus on AI safety and research work outside the company.
Mentioned above: the Massachusetts Institute of Technology mafia →
From Arvid's own website — common ground for a warm intro.
Co-founder at Cursor
Intro paths
→
In turn, Arvid can intro founders to Cursor's investors below.
Cursor's investors · 16
AccelPalo Alto · $1.6M – $70M checks · since 2026Andreessen HorowitzMenlo Park · $500K – $50M checks · since 2026Aviso VenturesSeattleBoxGroupNew York · $1M checksCoatue ManagementNew York · $1M – $20M checks · since 2025CRV (Charles River Ventures)San Francisco · $250K – $5M checksDorm RoomBrooklyn · $90K – $250K checksDST GlobalGeorge Town, Grand Cayman · $100K – $200M checks · since 2025Duke Capital PartnersDurhamLauder PartnersLos AltosNext Legacy PartnersPortola ValleyNVIDIASanta Clara · since 2026Preston-Werner VenturesSan Francisco Bay Area · $500K – $3M checksSoundproof VenturesPalo Alto · $500K – $25M checksThrive CapitalNew York · $500K – $25M checks · since 2026WealthUnion$10K checks
Co-founders at Cursor
MT
Michael TruellCo-founder & CEO
SA
Sualeh AsifCofounder
AS
Aman SangerCofounder
MT
Micheal TruellCofounder
Experience
- AnysphereCo-Founder2022 — 2025San Francisco, California, United States
- Jane StreetQuantitative Trading2021New York, New York, United States
- StripeSoftware Engineering2020
- QuantCoSoftware Engineering2019Cologne Bonn Region
Education
- Massachusetts Institute of TechnologyBachelor of Science - BS, Mathematics (18) and Computer Science (6-3)2018 — 2022
- Malmö Borgarskola High School2015 — 2018
Podcasts & interviews
featuring Arvid LunnemarkFrequently asked questions
- Where does Arvid Lunnemark work?
- Arvid Lunnemark is Co-founder at Cursor.
- What companies did Arvid Lunnemark found?
- Arvid Lunnemark founded Cursor.
Paths to reach Arvid
People who overlapped with Arvid at the same organization — a shared school or employer with one of them is a warm way in.
Together at CursorArvid: Co-founder
Michael Truell2022–2025Co-founder & CEO of CursorMassachusetts Institute of TechnologyBen Lang2025Builder, former founder, and community guyRamaz SchoolMari Luukkainen2025Principal at Identity.vcHaaga-Helia University of Applied Sciences · University of Helsinki · University of JyväskyläAlex Bangash2023–2025Managing Director and General Partner at Transpose Platform ManagementCornell University · The Wharton SchoolMiles Grimshaw2024–2025General Partner at BenchmarkPeking University · Yale UniversitySamantha Whitmore2025Investor at South Park CommonsStuyvesant High School · University of Cambridge
Together at StripeArvid: Software Engineering
Patrick Collison2020Co-founder & CEO of StripeMassachusetts Institute of TechnologyJohn Collison2020Co-founder & President of StripeHarvard UniversityHemant Taneja2020CEO & Managing Director of General CatalystMassachusetts Institute of Technology · MIT Sloan School of ManagementJanet Wolpert2020Investor at Index VenturesUniversity of AberdeenAdam2020Advisor at Clear VenturesCentral High School · Drexel UniversityVinnie Lauria2020Founding Partner at Golden Gate VenturesBoston University · Tsinghua University
Founder mafias
Massachusetts Institute of Technology mafia540
Also came through, then founded or led a company.
Elad GilPhDFounded Brain Co.Nat FriedmanBachelor of ScienceFounded XamarinMatt HuangB.S.Founded HotspotsDelian AsparouhovDropoutFounded Nightingale +1Drew HoustonBSFounded Dropbox +1Arash FerdowsiComputer ScienceFounded Dropbox
+ 533 more
Stripe mafia90
Also came through, then founded or led a company.
Matt HuangBoard MemberFounded HotspotsPatrick CollisonCo-founder & CEOFounded AuctomaticGreg BrockmanFounding Engineer, then first CTOFounded OpenAIDaniela AmodeiEarly employee — Risk ManagerFounded AnthropicParker ConradMember Board of DirectorsFounded Zenefits +1Stefano BernardiGTMFounded Unrulycap +1
+ 83 more
Same school
Also attended Massachusetts Institute of Technology1,291
Fred WilsonCo-founder & Partner at Union Square VenturesElad GilSolo general partner investing through Gil CapitalAileen LeeFounder & Managing Partner of Cowboy VenturesHemant TanejaCEO & Managing Director of General CatalystNat FriedmanCo-lead of Meta Superintelligence Labs; co-founder of NFDGBrad FeldCo-founder of Foundry and Techstars
+ 1,285 more
Shared employers
Also worked at Anysphere6
Also worked at Jane Street54
Leigh Marie BraswellPartner at KPCBIvory TangInvestor at ChemistryChang XuPartner at Basis Set VenturesAlexander GuInvestor at E14 FundChris ClarkInvestor at FalconX Credit / Pareto VaultMina NguyenInvestor at FalconX Credit / Pareto Vault
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+ 48 more
Also worked at Stripe174
Hemant TanejaCEO & Managing Director of General CatalystMatt HuangCo-founder and Managing Partner at ParadigmLuciana LixandruPartner at Sequoia CapitalPatrick CollisonCo-founder & CEO of StripeJohn CollisonCo-founder & President of StripeGreg BrockmanCo-founder & President of OpenAI
+ 168 more
