Sean Mahsoul
Founding Partner and Investor at Polymath Capital
San Francisco, California
Sean Mahsoul, Founding Partner and Investor at Polymath Capital is an active investor based in San Francisco, California. This profile covers what Sean Mahsoul backs, at which stage, and how founders can reach out in 2026.
Sean Mahsoul is a Founding Partner and Investor at Polymath Capital and a Partner at Presidio Legal, specializing in startups and venture-backed companies.
- Investor type
- VC
- Stages
- Early Stage Venture
- Invests in
- SaaS & EnterpriseLegalTech
- Location
- San Francisco, California
- Typical check
- $500K
How to reach Sean Mahsoul
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About this profile
This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise.
Frequently Asked Questions
What does Sean Mahsoul invest in?
Sean Mahsoul invests in SaaS & Enterprise and LegalTech, typically at Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Sean Mahsoul invest at?
Sean Mahsoul typically invests at Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is Sean Mahsoul's typical check size?
Sean Mahsoul typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.
How do I contact Sean Mahsoul?
Unlock Sean Mahsoul's verified email on Round Funded and send a personalized pitch. We surface only deliverable contacts so your outreach lands.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.