Mass Magnetics (YC S26) — USA-made magnetics for robotics and defense
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.
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What it does USA-made magnetics for robotics and defense (source)
Example from a real report (our sample on Target): “In March 2026, Target announced a planned incremental $1 billion operating investment” Source: Target Corporation (press release)
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.
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Secure, domestic, high-performance magnets, made fast and made in America. Rapid sintering from recycled feedstocks. DFARS 252.225-7052 compliant.
The title and description the site itself served, answering 200. Not a cached copy and not the company's directory entry — what was live when we asked.
Eric Silver
Founder/CEO
Founder at Mass Magnetics. Worked in pilot cathode production for lithium-sulfur battery chemistries. Now I'm fixing American magnet supply chains.
Matthew Groll
Founder/CTO
Co-founder and CTO at Mass Magnetics. Former NASA/Columbia/MIT. Previously worked on thermal systems and guidance/navigation at NASA Johnson Space Center for ISS and Artemis lunar missions. Also previously worked as a Member of Technical Staff at Draper Laboratory. Studied Mechanical Engineering at Columbia, captaining the Formula SAE team and Robotics Club, then earned a Masters in Manufacturing from MIT.
Founders, titles and bios as the company published them. Photographs are our own copies of the ones on that record, so they do not break when the original link expires.
One of 25 companies held here in Industrials › Defense.
No investor is drawn from a Form D — the form states how many invested and never who. The one investor on this graph is named because a batch has exactly one.
Want the whole picture on Mass Magnetics?
Example from a real report (our sample on Target): “In March 2026, Target announced a planned incremental $1 billion operating investment” Source: Target Corporation (press release)
A Full Report on Mass Magnetics: verified, sourced, every claim cited, ready in a few minutes. See pricing.
What the Full Report on Mass Magnetics covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
6 cited sources found
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