# R3 Lithium funding: rounds and investors

> R3 Lithium has raised $15M across 1 round since 2026. Investors include TDK Ventures. Every round with its source.

Source: https://millionrounds.com/company/r3-lithium (Millionrounds; every figure on the page links to its filing or article)

United States · [Series A startup](https://millionrounds.com/companies)

# Who invested in *R3 Lithium*

One round we have observed, with the one investor named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Energy

Raised 2 months ago

Funding summary Updated 26 Oct 2026

**$15M** raised across 1 round since 2026, from 1 source

- **Latest round:** Series A, $15M Sept 2026
- **Investors:** 1

See who backed them

## The rounds

- **Sept 2026** Series A **$15M** [TDK Ventures](https://millionrounds.com/fund/tdk-ventures) Source recorded SEC filing: $5.3M sold

## Founders and team

From R3 Lithium's own website: 6 on the team.

- **Linh Austin** President & CEO
- **Barbara Knight** Chief Administrative Officer
- **Heather Schwarm** Chief Financial Officer
- **Deacon Powell** General Counsel
- **Jacques Gerber** Director
- **Nicolas Sauvage** Director

## Everyone who backed them

[TDK Ventures](https://millionrounds.com/fund/tdk-ventures) Corporate VC **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=r3-lithium).

## Quick answers about R3 Lithium

### Who invested in R3 Lithium?

R3 Lithium's investors include TDK Ventures.

### How much has R3 Lithium raised?

R3 Lithium has raised $15M across 1 round since 2026.

### When did R3 Lithium last raise?

R3 Lithium's most recent round was a Series A of $15M in Sept 2026.

### What was R3 Lithium's biggest round?

Its most recent round, $15M in Sept 2026, is also its largest on record.

### Who backed R3 Lithium first?

R3 Lithium's first round on record, in Sept 2026, was backed by TDK Ventures.

### What stage is R3 Lithium at?

R3 Lithium's latest named round is a Series A, in Sept 2026.

### Where is R3 Lithium based?

R3 Lithium is based in the United States.

## Companies like R3 Lithium

In the same sector, and raised in the last eighteen months.

[**Amogy** $125M · Oct 2026](https://millionrounds.com/company/amogy)[**LanzaJet** $67M · Oct 2026](https://millionrounds.com/company/lanzajet)[**Pivot Energy** $500M · Oct 2026](https://millionrounds.com/company/pivot-energy)[**Peak Energy** $163M · Oct 2026](https://millionrounds.com/company/peak-energy)[**Pennsylvania American Water** $43M · Oct 2026](https://millionrounds.com/company/pennsylvania-american-water)[**Vertical Semiconductor** $84M · Oct 2026](https://millionrounds.com/company/vertical-semiconductor)

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