Germany · 
Who invested in Rail-Flow?
Rail-Flow's investors include Bonsai Partners, Trill Impact Ventures and Climentum Capital. Bonsai Partners led its latest round.
Germany · Series A startup
Who invested in Rail-Flow
Funding summaryUpdated 26 Oct 2026
$15Mraised across 1 round since 2025, from 2 sources
- Latest round
- Series A, $15MDec 2025
- Led by
- Bonsai Partners and Trill Impact Ventures
- Investors
- 3 (2 led)
The rounds
- Dec 2025Series A$15M
Reported by Firms' own news pages and 1 other
Founders and team
From Rail-Flow's own website: 2 founders, 2 on the team.
Everyone who backed them
Trill Impact VenturesVC firm1round, led 1
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
These 2 firms list Rail-Flow 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.
Quick answers about Rail-Flow
How much has Rail-Flow raised?
Rail-Flow has raised $15M across 1 round since 2025.
When did Rail-Flow last raise?
Rail-Flow's most recent round was a Series A of $15M in Dec 2025, led by Bonsai Partners.
What was Rail-Flow's biggest round?
Its most recent round, $15M in Dec 2025, is also its largest on record.
Who backed Rail-Flow first?
Rail-Flow's first round on record, in Dec 2025, was backed by Bonsai Partners, Trill Impact Ventures and Climentum Capital.
What stage is Rail-Flow at?
Rail-Flow's latest named round is a Series A, in Dec 2025.
Where is Rail-Flow based?
Rail-Flow is based in Germany.
Who led Rail-Flow's rounds?
Bonsai Partners led the Series A in 2025.
Companies like Rail-Flow
In the same sector, and raised in the last eighteen months.
Find investors like these
Search every investor by what they have actually funded, then narrow to your stage and market. Free.