Mass Magnetics YC Application
Boston
Mass Magnetics went through Y Combinator in the Summer 2026 batch as a Industrials company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.
- YC batch
- Summer 2026
- Industry
- IndustrialsDefense
- Location
- Boston
- Team size
- 3
- Status
- Active
- Launched
- 2026
Founders
Eric SilverFounder/CEO
Matthew GrollFounder/CTO
What Mass Magnetics does
Mass Magnetics turns recycled rare-earth scrap into high-performance permanent magnets, made in America. The materials we supply are the backbone of electric motors, sensors, speakers, hard drives, and electronics. Our process enables DFARS-compliant magnets for defense, aerospace, and industrial manufacturers who demand domestic supply without compromising on quality. Operations in Greater Boston, MA (Greentown Labs) and Columbus, IN.
Mass Magnetics's YC application, reconstructed
Y Combinator application
Mass Magnetics, Summer 2026 batch. The real form questions, answered from public data.
- Founders2
- Company7
- Progress7
- Idea4
- Equity3
- Curious2
- Batch Preference1
Company
Mass Magnetics
USA-made magnetics for robotics and defense.
We manufacture high-performance permanent magnets in the USA using a process that recycles rare-earth scrap. Our magnets are used in electric motors, sensors, and electronics, with a focus on supplying defense, robotics, and aerospace industries that require domestic, DFARS-compliant materials.
We live and work in Greater Boston, MA, with operations also in Columbus, IN. The company will continue to be based in Boston after YC.
Boston is the center of US robotics and defense hardware. We're in Greentown Labs to access hardware resources and be close to our industrial partners and customers. Staying in Boston lets us scale production and hire the right team.
21 more answers in the full application
Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.
Frequently Asked Questions
Is this the real Mass Magnetics YC application?
No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from Mass Magnetics's public data (launch notes, founder backgrounds, product description). It shows how a company like Mass Magnetics would present itself to YC, not the text they submitted.
What YC batch was Mass Magnetics in?
Mass Magnetics was part of the Y Combinator Summer 2026 batch.
Who founded Mass Magnetics?
Mass Magnetics was founded by Eric Silver, Matthew Groll.
What does Mass Magnetics do?
USA-made magnetics for robotics and defense.
How do I read the full reconstructed application?
Create a free Round Funded account. The full 26-answer version of Mass Magnetics's application, and every other YC batch, is in YC Insights.
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