# ArkeaBio funding: rounds and investors

> ArkeaBio has raised $22M across 2 rounds since 2025. Investors include Breakthrough Energy and AgriZeroNZ. Every round with its source.

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

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

# Who invested in *ArkeaBio*

2 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.

Agtech Biotech Climate Tech

Raised 1 month ago

Funding summary Updated 26 Oct 2026

**$22M** raised across 2 rounds since 2025, from 2 sources

**$7.0M** Series A **$15M** Series A

- **Latest round:** Series A, $15M Sept 2026
- **Led by:** AgriZeroNZ
- **Step-up i:** 2.1×
- **Investors:** 2 (1 led)

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.

2026

**$7.0M** Series A

**$15M** Series A

- **First round:** Series A, $7.0M
- **Biggest round:** $15M
- **Between rounds:** 13 months

## The rounds

- **Sept 2026** Series A **$15M** *1 new* *1 returning* [AgriZeroNZ](https://millionrounds.com/fund/agrizeronz) Lead [Breakthrough Energy](https://millionrounds.com/fund/breakthrough-energy) Reported by AgFunderNews
- **Sept 2025** Series A **$7.0M** *1 new* [Breakthrough Energy](https://millionrounds.com/fund/breakthrough-energy) Source recorded SEC filing: $7.0M sold, first sale Sept 2025

## 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.

**Series A** 2025 **Series A** 2026 [Breakthrough Energy](https://millionrounds.com/fund/breakthrough-energy) [AgriZeroNZ](https://millionrounds.com/fund/agrizeronz) L

## Everyone who backed them

[Breakthrough Energy](https://millionrounds.com/fund/breakthrough-energy) VC firm **2** rounds

[AgriZeroNZ](https://millionrounds.com/fund/agrizeronz) VC firm **1** round, led 1

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

## Quick answers about ArkeaBio

### Who invested in ArkeaBio?

ArkeaBio's investors include Breakthrough Energy and AgriZeroNZ. AgriZeroNZ led its latest round.

### How much has ArkeaBio raised?

ArkeaBio has raised $22M across 2 rounds since 2025.

### When did ArkeaBio last raise?

ArkeaBio's most recent round was a Series A of $15M in Sept 2026, led by AgriZeroNZ.

### What was ArkeaBio's biggest round?

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

### Who backed ArkeaBio first?

ArkeaBio's first round on record, in Sept 2025, was backed by Breakthrough Energy.

### What stage is ArkeaBio at?

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

### Where is ArkeaBio based?

ArkeaBio is based in the United States.

### Who led ArkeaBio's rounds?

AgriZeroNZ led the Series A in 2026.

## Companies like ArkeaBio

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)[**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**ZwitterCo** $58M · Oct 2026](https://millionrounds.com/company/zwitterco)[**Pennsylvania American Water** $43M · Oct 2026](https://millionrounds.com/company/pennsylvania-american-water)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)

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