# Mastra funding: rounds and investors > Mastra has raised $13M across 2 rounds since 2025. Investors include Y Combinator, Pioneer Fund and SV Angel. Every round with its source. Source: https://millionrounds.com/company/mastra (Millionrounds; every figure on the page links to its filing or article) United States · [Venture startup](https://millionrounds.com/companies) # Who invested in *Mastra* 2 rounds we have observed, with the 5 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. AI Raised 7 months ago Funding summary Updated 26 Oct 2026 **$13M** raised across 2 rounds since 2025, from 2 sources - **Latest round:** Venture Apr 2026 - **Biggest round:** $13M Pre-seed · Mar 2025 - **Investors:** 5 See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2026 **$13M** Pre-seed **?** Venture - **First round:** Pre-seed, $13M - **Biggest round:** $13M - **Between rounds:** 13 months ## The rounds - **Apr 2026** Venture **Amount undisclosed** *3 new* *2 returning* [Y Combinator](https://millionrounds.com/fund/y-combinator) [SV Angel](https://millionrounds.com/fund/sv-angel) [Liquid 2 Ventures](https://millionrounds.com/fund/liquid-2-ventures) [Pioneer Fund](https://millionrounds.com/fund/pioneer-fund-2) [Spark Capital](https://millionrounds.com/fund/spark-capital) Source recorded - **Mar 2025** Pre-seed **$13M** *2 new* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Pioneer Fund](https://millionrounds.com/fund/pioneer-fund-2) Also list them on their own site [Picks and Shovels](https://millionrounds.com/fund/picks-and-shovels) Source recorded ## Founders and team From Mastra's own website: 3 founders, 20 on the team. **Sam Bhagwat** Founder & CEO **Abhi Aiyer** Co-founder & CTO **Shane Thomas** Co-founder & Chief Product Officer - **Joshua Schlisserman** Chief of Staff - **Aron Schuhmann** Head of Demand Generation - **Joel Smith** Head of Platform - **Caleb Barnes** Senior Software Engineer - **Damien Schneider** Design Engineer - **Daniel Lew** Senior Software Engineer - **Devanshu Sharma** Intern - **Ehindero Israel** Product Engineer - **Francis Labi** Customer Engineer - **Grayson Hicks** Customer Engineer - **Lennart Jörgens** Senior Software Engineer - **Leo Orel** Intern - **Marvin Frachet** Senior Software Engineer - **Max Katz** Design Engineer - **Ose Dania** Staff Backend Engineer - **Patrycja Jenkner-Sar** Product Marketer & Content Engineer - **Romain Rouart** Customer Engineer - **Ryan Hansen** Principal Software Engineer And 2 more on the team. ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Pre-seed** 2025 **Venture** 2026 [Y Combinator](https://millionrounds.com/fund/y-combinator) [Pioneer Fund](https://millionrounds.com/fund/pioneer-fund-2) [SV Angel](https://millionrounds.com/fund/sv-angel) [Liquid 2 Ventures](https://millionrounds.com/fund/liquid-2-ventures) [Spark Capital](https://millionrounds.com/fund/spark-capital) ## Everyone who backed them [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **2** rounds [Pioneer Fund](https://millionrounds.com/fund/pioneer-fund-2) Private equity **2** rounds [SV Angel](https://millionrounds.com/fund/sv-angel) VC firm **1** round [Liquid 2 Ventures](https://millionrounds.com/fund/liquid-2-ventures) VC firm **1** round [Spark Capital](https://millionrounds.com/fund/spark-capital) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=mastra). ## Also claim to have backed them These 6 firms list Mastra as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above. [Gradient](https://millionrounds.com/fund/gradient-ventures) VC firm Per its own site [Lombardstreet Ventures](https://millionrounds.com/fund/lombardstreet-ventures) VC firm Per its own site [Phosphor Capital](https://millionrounds.com/fund/phosphor-capital) VC firm Per its own site [Picks and Shovels](https://millionrounds.com/fund/picks-and-shovels) VC firm Pre-seed, per its site [SAV (Scale Asia Ventures)](https://millionrounds.com/fund/sav-scale-asia-ventures) VC firm Per its own site [Zero Index](https://millionrounds.com/fund/zero-index) VC firm Per its own site ## Quick answers about Mastra ### Who invested in Mastra? Mastra's investors include Y Combinator, Pioneer Fund, SV Angel, Liquid 2 Ventures and Spark Capital. ### How much has Mastra raised? Mastra has raised $13M across 2 rounds since 2025. One round did not disclose an amount, so the total is a floor. ### When did Mastra last raise? Mastra's most recent round was a Venture in Apr 2026. ### What was Mastra's biggest round? Mastra's largest round on record is $13M (Pre-seed), in Mar 2025. ### Who backed Mastra first? Mastra's first round on record, in Mar 2025, was backed by Y Combinator and Pioneer Fund. ### What stage is Mastra at? Mastra's latest named round is a Venture, in Apr 2026. ### Where is Mastra based? Mastra is based in the United States. ## Companies like Mastra In the same sector, and raised in the last eighteen months. [**SpaceX** $42B · Oct 2026](https://millionrounds.com/company/spacex)[**xPay** $1.5M · Oct 2026](https://millionrounds.com/company/xpay)[**Albert Invent** $20M · Oct 2026](https://millionrounds.com/company/albert-invent)[**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**Pika** $216M · Oct 2026](https://millionrounds.com/company/pika)[**Vertical Semiconductor** $84M · Oct 2026](https://millionrounds.com/company/vertical-semiconductor) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app