# Avnos funding: rounds and investors

> Avnos has raised $53M across 2 rounds since 2024. Investors include Third Derivative and Mitsubishi Corporation. Every round with its source.

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

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

# Who invested in *Avnos*

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.

Climate Tech

Raised 12 months ago

Funding summary Updated 26 Oct 2026

**$53M** raised across 2 rounds since 2024, from 2 sources

**$36M** Series A **$17M** Debt

- **Latest round:** Debt, $17M Nov 2025
- **Biggest round:** $36M Series A · Feb 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.

2024 2025

**$36M** Series A

**$17M** Debt

- **First round:** Series A, $36M
- **Biggest round:** $36M
- **Between rounds:** 21 months

## The rounds

- **Nov 2025** Debt **$17M** *1 new* [Mitsubishi Corporation](https://millionrounds.com/fund/mitsubishi-corporation) Source recorded
- **Feb 2024** Series A **$36M** *1 new* [Third Derivative](https://millionrounds.com/fund/third-derivative) Source recorded

## Founders and team

From Avnos's own website: 1 founder.

**Will Kain** Founder & CEO

## 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** 2024 **Debt** 2025 [Third Derivative](https://millionrounds.com/fund/third-derivative) [Mitsubishi Corporation](https://millionrounds.com/fund/mitsubishi-corporation)

## Everyone who backed them

[Third Derivative](https://millionrounds.com/fund/third-derivative) Accelerator **1** round

[Mitsubishi Corporation](https://millionrounds.com/fund/mitsubishi-corporation) VC firm **1** round

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

## Quick answers about Avnos

### Who invested in Avnos?

Avnos's investors include Third Derivative and Mitsubishi Corporation.

### How much has Avnos raised?

Avnos has raised $53M across 2 rounds since 2024.

### When did Avnos last raise?

Avnos's most recent round was a Debt of $17M in Nov 2025.

### What was Avnos's biggest round?

Avnos's largest round on record is $36M (Series A), in Feb 2024.

### Who backed Avnos first?

Avnos's first round on record, in Feb 2024, was backed by Third Derivative.

### What stage is Avnos at?

Avnos's latest named round is a Debt, in Nov 2025.

### Where is Avnos based?

Avnos is based in the United States.

## Companies like Avnos

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)[**ZwitterCo** $58M · Oct 2026](https://millionrounds.com/company/zwitterco)[**Pennsylvania American Water** $43M · Oct 2026](https://millionrounds.com/company/pennsylvania-american-water)[**Kodama** $7.0M · Oct 2026](https://millionrounds.com/company/kodama)[**Stand** $105M · Oct 2026](https://millionrounds.com/company/stand)

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