When was rrreefs founded?

rrreefs was founded in 2020 and raised its 1st funding round 2 years after it was founded.

Where is rrreefs located?

rrreefs is headquartered in Zurich, Switzerland. It is registered at Beethovenstrasse 32, 8002 Zürich, CH.

How many employees does rrreefs have?

As of Apr 30, 2026, the latest employee count at rrreefs is 77.

Is rrreefs a funded company?

rrreefs is a funded company, having raised a total of $515K across 3 funding rounds to date. The company's 1st funding round was a $***** Seed round, raised on Aug 10, 2022.

When was the latest funding round of rrreefs?

rrreefs' latest funding was a $***** Grant (prize money) round on May 24, 2024, with participation from 1 investor.

Where does rrreefs rank among its competitors?

rrreefs ranks 21st amongst 112 active competitors, of which 21 are funded. It stands 8th in terms of total funding among its competitors. The most recent competitor to raise funding was Fleetzero, which secured $43M in Jan, 2026.

Who are the top competitors of rrreefs?

rrreefs' top competitors include Saildrone, Fleetzero and X Shore. Among them, Fleetzero secured the most recent funding round in January, 2026.

rrreefs - 2026 Company Profile, Team, Funding & Competitors

Company Details

Developer of modular, 3D-printed coral reef structures. These structures are designed to accelerate the regeneration of marine life in degraded coral reefs. Utilizing a pure clay material, the bricks create a durable and natural substrate for coral growth and provide habitat for marine organisms. The company's approach involves creating a three-dimensional reef structure that allows nature to take over and restore biodiversity. The modular design allows for customization to suit various reef environments.

Website: www.rrreefs.com/
Social
Email ID: *****@rrreefs.com
Phone Number: +41 **********
Registered Address: Beethovenstrasse 32, 8002 Zürich, CH

Key Metrics

Founded Year

2020

Location

Zurich, Switzerland

Stage

Seed

Total Funding

$515K in 3 rounds

Latest Funding Round

Grant (prize money), May 24, 2024, $*****

Investors

ETH Zurich & 4 more

Ranked

21^st among 112 active competitors

Employee Count

77 as on Apr 30, 2026

Similar Companies

Fleetzero & 104 more

View rrreefs' full profile

rrreefs is associated with 1 legal entity given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
rrreefs AG CIN: 1602963 , Switzerland, Active	Mar 11, 2024	-	-	-

rrreefs has raised a total funding of $515K over 3 rounds. Its first funding round was on Aug 10, 2022. Its latest funding round was a Grant (prize money) round on May 24, 2024 for $*****. 1 investor participated in its latest round. rrreefs has 5 institutional investors.

Here is the list of recent funding rounds of rrreefs:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
May 24, 2024	3382937	Grant (prize money)	9879156	5871385	6780539	4831873
Mar 20, 2024	5938058	Seed	7884737	9238903	2846318	5754067
Aug 10, 2022	4075263	Seed	5718652	9263362	Venture Kick	6795687

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View details of rrreefs's funding rounds and investors

The founders of rrreefs are Marie Griesmar, Ulrike Pfreundt and Hanna Kuhfuss.

Here are the details of rrreefs' key team members:

Marie Griesmar: Co-Founder of rrreefs.
Ulrike Pfreundt: Co-Founder of rrreefs.
Hanna Kuhfuss: Co-Founder of rrreefs.

View details of rrreefs's Founder profiles and Board Members

rrreefs' employee count trend

rrreefs has 77 employees as of Apr 26. Here is rrreefs's employee count trend over the years:

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Top competitors of rrreefs include Saildrone, Fleetzero and X Shore. Here is the list of Top 10 competitors of rrreefs, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Saildrone 2012, Alameda (United States), Series C	Developer of autonomous unmanned surface vehicle	$325M	Bond Capital, Social Capital & 23 others	64/100
2nd	Fleetzero 2021, Houston (United States), Series A	Platform offering modular electric propulsion and hull systems for cargo ships	$59.6M	Obvious Ventures, Breakthrough Energy & 9 others	62/100
3rd	X Shore 2016, Lidingo (Sweden), Series B	Manufacturer of electric boats	$113M	Team Europe, SEB & 7 others	59/100
4th	Arc Boats 2021, Los Angeles (United States), Series B	Manufacturer of electric ships	$137M	Andreessen Horowitz, Abstract Ventures & 13 others	58/100
5th	Fountaine Pajot 1976, Aigrefeuille d Aunis (France), Public	Manufacturer of luxury catamarans and yachts	-	Ace Capital Partners, Unexo & 4 others	55/100
6th	VINSSEN 2017, South Korea, Series C	Developer of electric boats	$15.4M	Kyobo Securities, E&Investment & 11 others	55/100
7th	Open Ocean Robotics 2018, Victoria (Canada), Seed	Developer of autonomous uncrewed surface vehicles for maritime security and data	$6M	Cindicates, Antares Ventures & 14 others	53/100
8th	Pure Watercraft 2011, Seattle (United States), Series B	Manufacturer of electric outboard motors and marine propulsion systems	$67.7M	General Motors, L37 & 6 others	52/100
9th	Navalt 2013, Kochi (India), Late Stage	Manufacturer of solar-electric and hybrid vessels for passenger, cargo, and defense	-	Villgro, BanyanTree Finance & 2 others	49/100
10th	Vision Marine Technologies 1995, Boisbriand (Canada), Public	Developer of electric boats	-	Quebec, Invest Quebec	47/100
21st	rrreefs 2020, Zurich (Switzerland), Seed	Developer of modular, 3D-printed coral reef structures	$515K	ETH Zurich, MassChallenge & 3 others	41/100