Company

Boston Metal

Rocket Ship Rating

Rocket Ship Rating: 99 out of 100

A new approach to metals production

Also known as Boston Electrometallurgical Corporation

Advanced manufacturing
Sustainable materials & circular economy
Climate positive
Deeptech
Hardware

Status: Operatingas of 2026-09-17
Business model: B2B
Headquarters: Woburn, Massachusetts, United States
Founded: 2013
Legal name: Boston Electrometallurgical Corporation

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Record updated 28 September 2026

About

Boston Metal is redefining global metals production with its patented Molten Oxide Electrolysis (MOE) platform technology.

Funding snapshot

Total raised: $493MSum of rounds, as of 2026-09-17Source (opens in a new tab)
Latest round: Undisclosed, $75M2026-05-20

Funding rounds

Round, 2026: $75M2026-05-20, Company stated
Round, 2026: 2026-03-03
Round, 2025: $51M2025-06-27, SEC form D sold, 5 investors
Convertible note: $51M2025, Company stated
Series C: $20M2024, Company stated
Round, 2023: $121M2023-01-26, SEC form D sold, 13 investors
Series C: $262M2023, Company stated
Series B: $60M2021, Company stated
Round, 2020: $50.1M2020-12-21, SEC form D sold, 8 investors
Round, 2018: $19.1M2018-12-18, SEC form D sold, 6 investors
Series A: $25M2018, Company stated

Products

Hardware: MOE Critical Metals
Web: MOE Critical Metals
Hardware: MOE Steel
Web: MOE Steel
Web: Molten Oxide Electrolysis (MOE)