Sean Mahsoul
InvestorPartner at Polymath Capital Partners
San Francisco, California
Writes $10K – $100K checks · typically $50K
About
Sean Mahsoul is a founding partner at Presidio Legal, a corporate law firm focused on startups and venture-backed companies, where he serves as outside general counsel and has negotiated venture capital financings with firms including Sequoia, General Catalyst, and Accel. He previously practiced at Wilson Sonsini and is a co-founder of Polymath Capital, a pre-seed and seed-stage venture capital firm. His practice encompasses venture financings, M&A transactions, and strategic guidance to founders and investors.
Experience
- Presidio Legal LLPPartnercurrent2021 — present
- Polymath CapitalFounding Partner and Investorcurrent2021 — present
- Wilson Sonsini Goodrich & RosatiCorporate Attorney2017 — 2021San Francisco Bay Area
- BrexCorporate Counsel - Secondment2019 — 2020San Francisco Bay Area
- Hogan LovellsCorporate Attorney2015 — 2017Menlo Park, CA
Skills & more
Corporate Law12Venture Capital5Start-ups5Mergers & Acquisitions7Investments5Securities4Investment Management1Entrepreneurship1
Languages Farsi (Persian) · Spanish
From Sean's professional profile.
Colleagues at Polymath Capital Partners
Network1
Investors connected to Sean in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Sean Mahsoul?
- Sean Mahsoul is a founding partner at Presidio Legal, a corporate law firm focused on startups and venture-backed companies, where he serves as outside general counsel and has negotiated venture capital financings with firms including Sequoia, General Catalyst, and Accel. He previously practiced at Wilson Sonsini and is a co-founder of Polymath Capital, a pre-seed and seed-stage venture capital firm. His practice encompasses venture financings, M&A transactions, and strategic guidance to founders and investors.
- Where does Sean Mahsoul work?
- Sean Mahsoul is Partner at Polymath Capital Partners.
- What check size does Sean Mahsoul write?
- Sean Mahsoul typically writes checks of $10K – $100K.
- Where did Sean Mahsoul go to school?
- Sean Mahsoul studied at University of California, College of the Law, San Francisco (formerly UC Hastings) (Doctor of Law (J.D.)); UCLA (Bachelor of Arts, Philosophy).
Same school
Also attended University of California, College of the Law, San Francisco (formerly UC Hastings)21
Greg RudinBoard Partner at Menlo VenturesStephan EberleGeneral Counsel & Head of Limited Partner Relations at Scale Venture PartnersMyles GutenkunstInvestor at Index VenturesBen HinshawDeputy General Counsel at ParadigmJennifer KercherGeneral Counsel at Westlake Village BioPartnersEmily ChanExecutive Assistant at BA Capital
+ 15 more
Also attended UCLA499
Ben HorowitzCo-founder & General Partner at Andreessen HorowitzRon ConwayFounder of SV AngelKirsten GreenFounder and Managing Partner at Forerunner VenturesVlad TenevCo-founder & CEO of RobinhoodRyan KingCo-founder of ChimePaul FieldingFinance & Operations at General Catalyst
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Shared employers
Also worked at Polymath Capital3
Also worked at Wilson Sonsini Goodrich & Rosati49
Michelle FernandesInvestor at Index VenturesErika NashInvestor at Next Frontier CapitalUri GreenwaldInvestor at Khosla VenturesDaniel GlazerUS Expansion, Fundraising and IPO/M&A Exit Expert at Notion CapitalLeslie StolperInvestor at IVP (Institutional Venture Partners)Zachary BogueCo-Founder and Managing Partner at DCVC (Data Collective)
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Also worked at Brex57
Henrique DubugrasCo-founder & former chairman of BrexPedro FranceschiCo-founder & CEO of BrexKatie BiberChief Operating Officer at ParadigmAyesha AroraVenture Partner at S32Jake SeidGeneral Partner at Ballistic VenturesMatt MocharyInvestor at Fortius Ventures
+ 51 more
Also worked at Hogan Lovells23
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+ 17 more