# Onsai GmbH funding: rounds and investors

> Onsai GmbH has raised $1.2M across 1 round since 2025. Investors include SI Ventures, Willem van der Zee and Wolfgang M. Neumann. Every round with its source.

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

Germany · [Growth startup](https://millionrounds.com/companies)

# Who invested in *Onsai GmbH*

One round we have observed, with the 3 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.

AI Travel & Hospitality

Funding summary Updated 26 Oct 2026

**$1.2M** raised across 1 round since 2025, from 1 source

- **Latest round:** Growth, $1.2M Aug 2025
- **Led by:** SI Ventures
- **Investors:** 3 (1 led)

See who backed them

## The rounds

- **Aug 2025** Growth **$1.2M** [SI Ventures](https://millionrounds.com/fund/si-ventures) Lead [Willem van der Zee](https://millionrounds.com/fund/willem-van-der-zee) [Wolfgang M. Neumann](https://millionrounds.com/fund/wolfgang-m-neumann) Reported by Firms' own news pages

## Everyone who backed them

[SI Ventures](https://millionrounds.com/fund/si-ventures) Growth equity **1** round, led 1

[Willem van der Zee](https://millionrounds.com/fund/willem-van-der-zee) Growth equity **1** round

[Wolfgang M. Neumann](https://millionrounds.com/fund/wolfgang-m-neumann) Growth equity **1** round

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

## Quick answers about Onsai GmbH

### Who invested in Onsai GmbH?

Onsai GmbH's investors include SI Ventures, Willem van der Zee and Wolfgang M. Neumann. SI Ventures led its latest round.

### How much has Onsai GmbH raised?

Onsai GmbH has raised $1.2M across 1 round since 2025.

### When did Onsai GmbH last raise?

Onsai GmbH's most recent round was a Growth of $1.2M in Aug 2025, led by SI Ventures.

### What was Onsai GmbH's biggest round?

Its most recent round, $1.2M in Aug 2025, is also its largest on record.

### Who backed Onsai GmbH first?

Onsai GmbH's first round on record, in Aug 2025, was backed by SI Ventures, Willem van der Zee and Wolfgang M. Neumann.

### What stage is Onsai GmbH at?

Onsai GmbH's latest named round is a Growth, in Aug 2025.

### Where is Onsai GmbH based?

Onsai GmbH is based in Germany.

### Who led Onsai GmbH's rounds?

SI Ventures led the Growth in 2025.

## Companies like Onsai GmbH

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

[**YGO** $9.0M · Oct 2026](https://millionrounds.com/company/ygo)[**Causa Prima** $30M · Oct 2026](https://millionrounds.com/company/causa-prima)[**Stenon** $41M · Oct 2026](https://millionrounds.com/company/stenon)[**OllyGarden** $5.6M · Oct 2026](https://millionrounds.com/company/ollygarden)[**hexafarms** $9.5M · Oct 2026](https://millionrounds.com/company/hexafarms)[**METYCLE** $165M · Sept 2026](https://millionrounds.com/company/metycle)

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