Ambri
Ambri developed liquid metal battery systems for long-duration, grid-scale energy storage, using molten metal electrodes separated by a molten salt electrolyte at roughly 500°C. Founded in 2010 as Liquid Metal Battery Corporation by MIT researchers including Donald Sadoway, it was backed by Bill Gates, Khosla Ventures, Paulson & Co and Reliance New Energy Solar. Ambri filed for Chapter 11 in May 2024, was bought out of bankruptcy by its own lenders, then wound down in 2025 after failing to raise the capital to build a factory. Its equipment and patents were liquidated in an assignment for the benefit of creditors.
Acquired
Ambri has been acquired
This company is no longer available on our private secondary market.
Overview
Company data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Founded
2010
Total Funding
$229.33M
7 rounds
Secondary Signals (Note: SetterVC does not verify the accuracy of these)
1 signalAssigned its assets to Ambri ABC for the benefit of creditors on Aug 21, 2025; IP and equipment then liquidated.
Liquidation rather than restructuring: no going concern remains and equity is extinguished.
Funding
Funding data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Rounds in grey italics are unconfirmed.
Total raised $229.33M across 7 rounds
Last updated 10-01-2026
| Date | Round | Amount Raised | Valuation | Lead Investors |
|---|---|---|---|---|
| Aug 1, 2024 | Post-reorganization recapitalization | $11.1M | — | Gates Frontier, Paulson & Co, Fortistar |
| Series F (rumored - failed) | Not disclosed | — | Not disclosed | |
| Aug 2021 | Series D / E | $144M | — | Reliance New Energy Solar |
Prominent Investors
Leadership
David Bradwell
Chief Executive Officer and Co-Founder
Donald Sadoway
Co-Founder
Luis Ortiz
Co-Founder
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