Re:Build, a Massachusetts company that designs and manufactures hardware for other businesses, raised $2.1 billion in new funding to expand U.S. factory capacity and launch more industrial startups, one of the largest private financings tied to American reshoring.
General Catalyst and JPMorganChase’s Strategic Investment Group led the investment. The JPMorgan unit, run by Todd Combs, makes direct equity investments under the bank’s Security and Resiliency Initiative, a multiyear program aimed at industries considered critical to national security and supply chains. Re:Build did not disclose a valuation or name other investors. General Catalyst first backed the company in 2024.
From design to the factory floor
Founded in 2020, Re:Build works with industrial companies from early product design through volume production, using an internal process it calls manufacturing-constrained design to shorten the path to scale. It also incubates startups in markets it views as underserved. Electric-truck maker Slate Auto, which has drawn backing from Amazon founder Jeff Bezos, spun out of Re:Build in 2023, as did aviation startup Neon Aero.
The company and its affiliated businesses employ more than 2,100 people in the U.S. and operate more than 2.4 million square feet of manufacturing space. Its founding team has raised more than $4 billion to date, and Re:Build said the new money gives its holding company enough capital to pursue growth plans across aerospace and defense, electrification, medical, energy and environmental products, and robotics and automation.
Capital chases hard tech
The raise lands as investors pour money into companies that build physical products in the U.S., driven by tariffs, defense spending and efforts to reduce dependence on Chinese supply chains. Re:Build said it expects to create tens of thousands of domestic manufacturing jobs over the next decade and aims to grow its workforce tenfold and eventually a hundredfold.



