Switzerland · 
Who invested in Rrreefs?
Rrreefs's investors include MassChallenge.
20252026
$29KGrant$1.1MCrowdfunding
Switzerland · Crowdfunding startup
Who invested in Rrreefs
Funding summaryUpdated 26 Oct 2026
$1.1Mraised across 2 rounds since 2024, from 2 sources
$29KGrant$1.1MCrowdfunding
- Latest round
- Crowdfunding, $1.1MJun 2026
- Step-upi
- 37.9×
- Investors
- 1
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Grant, $29K Sept 2024
- Biggest round
- $1.1M Crowdfunding · Jun 2026
- Between rounds
- 21 months from the last two
The rounds
- Jun 2026
- Sept 2024
Founders and team
From Rrreefs's own website: 4 founders, 4 on the team.
Dr. Ulrike PfreundtCo-Founder, Co-CEO
Josephine GrafCo-Founder, Co-CEO
Hanna KuhfussCo-Founder, Chief Field Operations & International Relations
Marie GriesmarCo-Founder, COO
- Mauro BischoffHead of Production
- Olivia GrubenmannHead of Communications & Marketing
- Abi FerraziniLead Reef Rehabilitation & Conservation Training, PH
- Che AdlawanLead Sustainable livelihood & Social Inclusion Strategy, PH
AdvisersStephan HillertBarbara Truyers
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about Rrreefs
How much has Rrreefs raised?
Rrreefs has raised $1.1M across 2 rounds since 2024.
When did Rrreefs last raise?
Rrreefs's most recent round was a Crowdfunding of $1.1M in Jun 2026.
What was Rrreefs's biggest round?
Its most recent round, $1.1M in Jun 2026, is also its largest on record.
Who backed Rrreefs first?
Rrreefs's first round on record, in Sept 2024, was backed by MassChallenge.
What stage is Rrreefs at?
Rrreefs's latest named round is a Crowdfunding, in Jun 2026.
Where is Rrreefs based?
Rrreefs is based in Switzerland.
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