# R-Zero funding: rounds and investors

> R-Zero has raised $105M across 1 round since 2023. Investors include SOSV, Upfront Ventures and Qualcomm Ventures. Every round with its source.

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

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

# Who invested in *R-Zero*

One round we have observed, with the 6 investors 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

Funding summary Updated 26 Oct 2026

**$105M** raised across 1 round since 2023, from 1 source

- **Latest round:** Series C, $105M Feb 2023
- **Investors:** 6

See who backed them

## The rounds

- **Feb 2023** Series C **$105M** [SOSV](https://millionrounds.com/fund/sosv) [Upfront Ventures](https://millionrounds.com/fund/upfront-ventures) [Qualcomm Ventures](https://millionrounds.com/fund/qualcomm-ventures) [Mayo Clinic](https://millionrounds.com/fund/mayo-clinic) [World Innovation Lab Wil](https://millionrounds.com/fund/wil-world-innovation-lab) [La Caisse](https://millionrounds.com/fund/la-caisse) Source recorded

## Everyone who backed them

[SOSV](https://millionrounds.com/fund/sosv) VC firm **1** round

[Upfront Ventures](https://millionrounds.com/fund/upfront-ventures) VC firm **1** round

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

[Mayo Clinic](https://millionrounds.com/fund/mayo-clinic) Investment firm **1** round

[World Innovation Lab Wil](https://millionrounds.com/fund/wil-world-innovation-lab) VC firm **1** round

[La Caisse](https://millionrounds.com/fund/la-caisse) Investment firm **1** round

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

## Also claim to have backed them

These 2 firms list R-Zero as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.

[Civilization Ventures](https://millionrounds.com/fund/civilization-ventures) VC firm Per its own site

[Leadout Capital](https://millionrounds.com/fund/leadout-capital) VC firm Per its own site

## Quick answers about R-Zero

### Who invested in R-Zero?

R-Zero's investors include SOSV, Upfront Ventures, Qualcomm Ventures, Mayo Clinic and World Innovation Lab Wil, and 1 more on record.

### How much has R-Zero raised?

R-Zero has raised $105M across 1 round since 2023.

### When did R-Zero last raise?

R-Zero's most recent round was a Series C of $105M in Feb 2023.

### What was R-Zero's biggest round?

Its most recent round, $105M in Feb 2023, is also its largest on record.

### Who backed R-Zero first?

R-Zero's first round on record, in Feb 2023, was backed by SOSV, Upfront Ventures and Qualcomm Ventures and 3 others.

### What stage is R-Zero at?

R-Zero's latest named round is a Series C, in Feb 2023.

### Where is R-Zero based?

R-Zero is based in the United States.

## Companies like R-Zero

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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