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Carbonwave

Carbonwave

Private
Boston, MassachusettsEnergy & Sustainabilityhttps://carbonwave.com/

Last Round

Seed Round

Apr 29, 2026

Total Funding Raised

$15.33M

Momentum

Top 50%

of companies Caplight tracks

Company Overview

Carbonwave is a climate technology company that transforms invasive Sargassum seaweed into high-value plant-based biomaterials for the agriculture, cosmetics, and fashion industries.

Sector

Energy & Sustainability

Verticals

Sustainable Materials, Circular Economy, Fashion & Beauty, Waste Management

Business Model

B2B

Customer Profile

Data as a Service, Services & Consulting

AI Layer

Non-AI

Keywords

sargassumbiorefineryseaweed upcyclingbiomaterialsbio-stimulantssurfactantscircular economyregenerative agriculturesustainable ingredientsocean cleanupblue economyclimate techbiotechwaste valorization

Historical Pricing

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Caplight Momentum Score

Proprietary index based on bid/ask volume and sentiment.

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Carbonwave Comparables

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Carbonwave comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
SOS Biotech
82%
Ocean Rainforest
80%
Pacific Kelp Co.
79%

Carbonwave Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
Seed RoundApr 29, 2026
StrategicJun 23, 2023
Series AApr 6, 2023
SeedNov 5, 2021
CrowdfundingSep 30, 2021

Key People

Founding team and executive leadership

Geoff Chapin

Chief Executive Officer

Executive Team

Carbonwave Investors

Notable investors and investment history

Carbonwave investors
InvestorRounds
MirovaSeries A
Baruch Future VenturesSeed
Incite VenturesSeed
Pegasus Capital AdvisorsStrategic
Katapult OceanSeries A
Katapult OceanSeries A

Market signals

Structured signals derived from secondary market and firmographic data.

  • Apr 29, 2026

    $205K raised in Seed Round.

  • Apr 6, 2023

    $5M round led by Mirova.

Carbonwave Filings

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Carbonwave filings preview — column headings only; records require access
TypeDateAmount OfferedAmount SoldFilingPagesDownload

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Frequently Asked Questions

Common questions about Carbonwave's valuation, stock price, and market status.

Is Carbonwave a public or private company?

Carbonwave is a private company.

What is the current stock price of Carbonwave?

Carbonwave is a private company with no public stock price. No recent secondary market data is available.

How much is Carbonwave worth (valuation)?

Valuation information for Carbonwave is not publicly available.

Can I buy Carbonwave stock?

Carbonwave shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.

When was Carbonwave's last funding round?

Carbonwave's most recent funding round was Seed Round on April 29, 2026.

Who are the main investors in Carbonwave?

Key investors in Carbonwave include Mirova.

Will Carbonwave IPO soon?

No public IPO plans have been announced for Carbonwave.

How can I track Carbonwave secondary market activity?

Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Carbonwave's secondary market activity and sign up for updates.

Firmographic Details

HeadquartersBoston, Massachusetts
Employee Range31
Year Founded2020
Last FundingApr 29, 2026

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