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PlantSea

PlantSea

Private
United KingdomFrontier & Industrial Techhttps://plantsea.co.uk/

Last Round

Seed

Jan 26, 2024

Est. Valuation

$8.69M

Total Funding Raised

$3.36M

Company Overview

PlantSea is a biomaterials company that produces regenerative materials from seaweed to create plastic-free, biodegradable, and compostable packaging.

Sector

Frontier & Industrial Tech

Verticals

Sustainable Materials, Advanced Materials, Biotechnology, Circular Economy, Clean Manufacturing

Business Model

B2B

Customer Profile

Hardware Sales, Services & Consulting, Government Contracts

AI Layer

Non-AI

Keywords

biodegradable filmseaweed-based materialswater-soluble filmplastic alternativebioplasticsseaweed packagingbiodegradable polymersmicroplastic-freePVOH alternativesustainable packagingdrop-in replacementcompostable packaginglaundry pod filmbiorefiningagricultural film

Historical Pricing

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PlantSea Comps

Public and private peers based on sector, stage, and business model.

PlantSea comps — public and private peers by sector, stage, and business model
CompanyStatusEst. ValuationRev Multiple
OpenAIPrivate$86.0B~40x
CoherePrivate$5.0B--
Competitor 1Public$XX.XBXXx
Competitor 2Public$XX.XBXXx

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PlantSea Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
SeedJan 26, 2024
Pre SeedSep 29, 2023
GrantMar 9, 2022

Key People

Founding team and executive leadership

Rhiannon Rees

CEO & Founder

Founding Team

Alex Newnes

Chief Technology Officer

Executive Team

PlantSea Investors

Notable investors and investment history

PlantSea investors
InvestorRounds
Angels Invest WalesSeed
Sustainable VenturesSeed, Pre Seed
Innovate UKPre Seed, Grant
Republic EuropeSeed
SFC CapitalPre Seed
Development Bank of WalesPre Seed

Market signals

Structured signals derived from secondary market and firmographic data.

  • Feb 16, 2026

    Grew 33% QoQ, from 9 to 12 employees.

  • Jan 26, 2024

    $1.07M round with Angels Invest Wales and Republic Europe.

PlantSea Filings

SEC and related filings with document metadata.

Data table
TypedDateAmount OfferedAmount SoldFillingPagesDownload
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PlantSea Filings

SEC and related filings with document metadata.

Frequently Asked Questions

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

Firmographic Details

HeadquartersUnited Kingdom
Employee Range16
Year Founded2020
Last FundingJan 26, 2024

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