Re:Build Manufacturing, the Massachusetts-based manufacturing accelerator that spun out EV startup Slate Auto in 2023, announced October 27, 2026 that it has raised $2.1 billion. The article does not label the round stage (e.g., Series A/B) and did not disclose revenue, client, pipeline, or employee count metrics. The round was led by General Catalyst and JPMorganChase's Strategic Investment Group, with other investors undisclosed. The company said it will use the funding to expand its capacity to manufacture hard tech products and launch new industrial startups.