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Sam Bhagwat

InvestorFounder

CEO at Mastra

San Francisco Bay Area

FoundedMastra · YC

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About

Sam Bhagwat was a cofounder of Gatsby.js, an open-source React framework, for approximately eight years before its acquisition by Netlify. He previously held early engineering roles at Zenefits and Plangrid, and holds a degree from Stanford University.

Likely emails· guessed from name + firm domain, not firm-published

CEO at MastraYC W25

Intro paths

YC

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

GP

Their group partner at YC was Gustaf Alstromer, General Partner at Y Combinator — the partner who ran Mastra's batch and knows the company first-hand. YC profile ↗

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In turn, Sam can intro founders to Mastra's investors below.

Mastra's investors · 28

Amjad Masadsince 2025Balaji Srinivasan$10K – $500K checks · since 2025Base Case CapitalSan Francisco · $1M – $5M checksBatch VenturesBroom VenturesSan Francisco · since 2025Clever CapitalDefy PartnersWoodside · $3M – $10M checks · since 2025Founders NetworkSan Francisco · since 2025Garuda VenturesSan Francisco · $500K – $1.5M checks · since 2025Gradient VenturesSan Francisco · $100K – $10M checks · since 2025Kleiner PerkinsMenlo Park · $500K – $15M checksLiquid VenturesSan Francisco · $250K – $5M checksLombardstreet VenturesWoodside · $500K checks · since 2025Moonfire VenturesLondon · since 2025Orange CollectiveDanville · since 2025Picks and Shovels (Picks & Shovels)Santa Monica · $100K checksPioneerToronto, OntarioRide HomeLynnwood · $100K – $5M checksRitual CapitalMenlo Park · $100K – $500K checks · since 2025Runa CapitalLuxembourg · $500K – $5M checks · since 2025SAV (Scale Asia Ventures)Palo AltoScript CapitalSan Francisco · $250K – $500K checks · since 2025Spark CapitalSan Francisco · $500K – $25M checks · since 2026SV AngelSan Francisco · $150K – $20M checks · since 2025Transpose Platform ManagementSan FranciscoVarion VenturesSan FranciscoY CombinatorSan Francisco · $500K checks · since 2025Zero Index

Co-founders at Mastra

AAAbhi Aiyer
Abhi AiyerCTO
STShane Thomas
Shane ThomasFounder

Investments

Per curated public sources.

Frequently asked questions

Who is Sam Bhagwat?
Sam Bhagwat was a cofounder of Gatsby.js, an open-source React framework, for approximately eight years before its acquisition by Netlify. He previously held early engineering roles at Zenefits and Plangrid, and holds a degree from Stanford University.
Where does Sam Bhagwat work?
Sam Bhagwat is CEO of Mastra.
What companies did Sam Bhagwat found?
Sam Bhagwat founded Mastra.
What companies has Sam Bhagwat invested in?
Investments tracked here include InsForge (InstaCloud), Lucent, SubImage, SuperTokens, Yummy.

Founder mafias

About this profile. Compiled from public sources — Mastra's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights