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Panthalassa

Panthalassa

Private
Portland, OregonEnergy & Sustainabilityhttps://panthalassa.com/

Last Round

Series B

May 4, 2026

Est. Valuation

$1B

Total Funding Raised

$193M

Momentum

Top 10%

of companies Caplight tracks

Company Overview

Panthalassa is a renewable energy and ocean technology company that develops and deploys autonomous floating nodes that convert wave motion into continuous electricity for applications like AI computing at sea and clean fuel production.

Sector

Energy & Sustainability

Verticals

Cloud Infrastructure, Alternative Fuels, Renewable Energy

Business Model

B2B

Customer Profile

Hardware Sales, Services & Consulting, Government Contracts

AI Layer

Application

Keywords

wave energywave energy conversionoffshore power generationautonomous nodesat-sea data centersfloating data centersrenewable fuel productiongreen hydrogenmarine energyocean coolingpower purchase agreementsPPAoff-grid energywave energy buoys

Historical Pricing

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Caplight Momentum Score

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Panthalassa Comparables

Compare Panthalassa with similar companies based on industry and business-model similarity.

Panthalassa comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
Optimal Transit
70%
Environmental Resources Management
61%
Subsea Cloud Inc.
58%

Panthalassa Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
Series BMay 4, 2026
VC RoundMay 21, 2025
VC RoundSep 13, 2024
Series AAug 24, 2024

Key People

Founding team and executive leadership

Garth Sheldon-Coulson

Co-Founder & CEO

Founding Team

Panthalassa Investors

Notable investors and investment history

Panthalassa investors
InvestorRounds
ValorSeries A
Hanwha Asset Management (USA) Ltd.Series B
SciFi VenturesSeries B
TIME VenturesSeries B
TIME VenturesSeries B
Gigascale CapitalVC Round, Series A, Series B
Planetary Venture CapitalSeries B

Market signals

Structured signals derived from secondary market and firmographic data.

  • Aug 19, 2026

    Grew 19% QoQ, from 113 to 134 employees.

  • Aug 1, 2026

    Grew 19% QoQ, from 111 to 132 employees.

Recent news

Latest coverage and updates

  • receives_financingSep 12, 2026

    Panthalassa received financing of $120M in Series B on May 1st '26.

  • is_developingAug 14, 2026

    Panthalassa is developing Ocean-3 on Jul 1st '26.

Panthalassa Filings

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

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Frequently Asked Questions

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

Is Panthalassa a public or private company?

Panthalassa is a private company.

What is the current stock price of Panthalassa?

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

How much is Panthalassa worth (valuation)?

Panthalassa's valuation is estimated at $1.0B based on funding round data.

Can I buy Panthalassa stock?

Panthalassa 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 Panthalassa's last funding round?

Panthalassa's most recent funding round was Series B on May 4, 2026.

Who are the main investors in Panthalassa?

Key investors in Panthalassa include Valor, SciFi Ventures, TIME Ventures, TIME Ventures, Gigascale Capital.

Will Panthalassa IPO soon?

No public IPO plans have been announced for Panthalassa.

How can I track Panthalassa secondary market activity?

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

Firmographic Details

HeadquartersPortland, Oregon
Employee Range110
Year Founded2021
Last FundingMay 4, 2026

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