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Marlborough, MA, USA · Shut down (2026, exact date unconfirmed) · ambri.com
Liquid-metal (calcium-antimony) batteries; relaunched after 2024 Chapter 11
Open roles
—
no public job board
Federal awards
—
none found
Last private raise
$144M
Form D · 2021-08-09
SEC filings
4
latest 2021-08-24
Coming up
POLICY45Y / 48E: all other clean power and storage
Full credit for projects beginning construction through 2033; 75% for 2034 starts, 50% for 2035, none from 2036. Affects Long-duration storage.
+ THESISRead from SEC 8-Ks (bankruptcy, default, delisting, restatement, impairment, restructuring), cash runway in annual reports, Form D raises and the 30-day hiring trend. A prompt to look closer, not a credit rating.
No public job board on Greenhouse, Lever or Ashby, so hiring isn't tracked for this company yet.
Companies file a Form D within 15 days of selling shares privately. “Sold” is the amount raised so far in that offering; amended notices (D/A) update earlier ones.
| First sale | Notice | Offered | Sold |
|---|---|---|---|
| 2021-08-09 | D · filed 2021-08-24 | $149M | $144M |
| 2018-12-18 | D · filed 2018-12-28 | $17M |
Sources: company job boards (daily), SEC EDGAR, USAspending.gov, and the reviewed technology spreadsheets. Public records only cover US entities, so foreign companies and private firms that don't file will show gaps.
| $17M |
| 2014-04-23 | D · filed 2014-05-02 | $35M | $35M |
| 2012-05-15 | D · filed 2012-05-25 | $15M | $15M |
No federal grants, contracts or loans found on USAspending.gov under this company's US entity name.
Policy that applies
No minerals, policies or partners linked yet. Add them in the review spreadsheet.
2026-11-05 · closed
Ambri: Shut down (2026, exact date unconfirmed)Ambri, the liquid metal battery developer, is reported to be shutting down, with its assets going to auction, per a Boston Business Journal headline. Earlier it had filed for Chapter 11 in 2024, sold its assets to lenders, and emerged from bankruptcy. Commentary dated Nov 2026 says the liquid metal battery has reached the end of its cycle. The exact 2026 wind-down date was not confirmed in the sources.2026-11-05 · Status updated
Shut down (2026, exact date unconfirmed)was: PrivateOnly Form D notices on file (shown at left).