Who invested in Sigma Lithium

3 rounds we have observed, with the 2 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Manufacturing

Funding summaryUpdated 26 Oct 2026

$87Mraised across 3 rounds since 2022, from 3 sources

$229KRound$87MDebt$339KRound

Latest round: Round, $339KJul 2025
Biggest round: $87MDebt · Aug 2024
Investors: 2

See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

202320242025

$229KRound$87MDebt$339KRound

First round: Round, $229K
Biggest round: $87M
Usual gap between rounds: 23 months

The rounds

Jul 2025
Round$339K
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet
Aug 2024
Debt$87M2 new
- Citibank
- Santander
Source recorded
Sept 2022
Round$229K
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet

Funding filed with regulators

Sigma Lithium filed 2 raises, $568K in all. Filings say how much was sold and to how many investors; they never name the investors.

Jul 2025$339KUK share allotment
Sept 2022$229KUK share allotment

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Round2022Debt2024Round2025

Citibank

Santander

Everyone who backed them

CitibankGrowth equity1round

SantanderVC firm1round

Missing a round, or an investor who was in one? Tell us.

Also claim to have backed them

This firm lists Sigma Lithium as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.