# Cactos funding: rounds and investors

> Cactos has raised $7.3M across 1 round since 2025. Investors include Union Square Ventures and Superhero Capital. Every round with its source.

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

Finland · [Venture startup](https://millionrounds.com/companies)

# Who invested in *Cactos*

One round we have observed, with the 2 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

**$7.3M** raised across 1 round since 2025, from 1 source

- **Latest round:** Venture, $7.3M Jan 2025
- **Investors:** 2

See who backed them

## The rounds

- **Jan 2025** Venture **$7.3M** [Union Square Ventures](https://millionrounds.com/fund/union-square-ventures) [Superhero Capital](https://millionrounds.com/fund/superhero-capital) Source recorded

## Everyone who backed them

[Union Square Ventures](https://millionrounds.com/fund/union-square-ventures) VC firm **1** round

[Superhero Capital](https://millionrounds.com/fund/superhero-capital) VC firm **1** round

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

## Also claim to have backed them

These 2 firms list Cactos 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.

[FJ Labs](https://millionrounds.com/fund/fj-labs) VC firm Per its own site

[Tesi](https://millionrounds.com/fund/tesi) Government Per its own site

## Quick answers about Cactos

### Who invested in Cactos?

Cactos's investors include Union Square Ventures and Superhero Capital.

### How much has Cactos raised?

Cactos has raised $7.3M across 1 round since 2025.

### When did Cactos last raise?

Cactos's most recent round was a Venture of $7.3M in Jan 2025.

### What was Cactos's biggest round?

Its most recent round, $7.3M in Jan 2025, is also its largest on record.

### Who backed Cactos first?

Cactos's first round on record, in Jan 2025, was backed by Union Square Ventures and Superhero Capital.

### What stage is Cactos at?

Cactos's latest named round is a Venture, in Jan 2025.

### Where is Cactos based?

Cactos is based in Finland.

## Companies like Cactos

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

[**Ren-Gas** $791M · Sept 2026](https://millionrounds.com/company/ren-gas)[**TheStorage** $5.4M · Apr 2026](https://millionrounds.com/company/thestorage)[**Liquid Sun** Aug 2025](https://millionrounds.com/company/liquid-sun)[**Geyser Batteries** $1.1M · Jun 2025](https://millionrounds.com/company/geyser-batteries)[**Amogy** $125M · Oct 2026](https://millionrounds.com/company/amogy)[**LanzaJet** $67M · Oct 2026](https://millionrounds.com/company/lanzajet)

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