# Solsten funding: rounds and investors

> Solsten has raised across 1 round since 2026. Investors include Alumni Ventures, Inventure and GFR Fund. Every round with its source.

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

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

# Who invested in *Solsten*

One round we have observed, with the 4 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

Raised 9 months ago

Funding summary Updated 26 Oct 2026

**Undisclosed** raised across 1 round since 2026, from 1 source

- **Latest round:** Venture Feb 2026
- **Investors:** 4

See who backed them

## The rounds

- **Feb 2026** Venture **Amount undisclosed** [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Inventure](https://millionrounds.com/fund/inventure) [GFR Fund](https://millionrounds.com/fund/gfr-fund) [Washington Harbour Partners Lp](https://millionrounds.com/fund/washington-harbour-partners-lp) Source recorded

## Funding filed with regulators

Solsten filed one raise, $21K in all. Filings say how much was sold and to how many investors; they never name the investors.

- Feb 2026 **$21K** other of $1.2M offered Crowdfunding

## Everyone who backed them

[Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) VC firm **1** round

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

[GFR Fund](https://millionrounds.com/fund/gfr-fund) VC firm **1** round

[Washington Harbour Partners Lp](https://millionrounds.com/fund/washington-harbour-partners-lp) Private equity **1** round

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

## Also claim to have backed them

These 4 firms list Solsten 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.

[Dentsu Ventures](https://millionrounds.com/fund/dentsu-ventures) Corporate VC Per its own site

[Sisu Game Ventures](https://millionrounds.com/fund/sisu-game-ventures) VC firm Per its own site

[Milkbox Partners](https://millionrounds.com/fund/milkbox-partners) VC firm Per its own site

[Prime Partners](https://millionrounds.com/fund/prime-partners) VC firm Per its own site

## Quick answers about Solsten

### Who invested in Solsten?

Solsten's investors include Alumni Ventures, Inventure, GFR Fund and Washington Harbour Partners Lp.

### How much has Solsten raised?

Solsten has raised 1 round since 2026, none with a disclosed amount.

### When did Solsten last raise?

Solsten's most recent round was a Venture in Feb 2026.

### Who backed Solsten first?

Solsten's first round on record, in Feb 2026, was backed by Alumni Ventures, Inventure and GFR Fund and 1 others.

### What stage is Solsten at?

Solsten's latest named round is a Venture, in Feb 2026.

### Where is Solsten based?

Solsten is based in Germany.

## Companies like Solsten

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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