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Radical

Radical

Private
Seattle, WashingtonFrontier & Industrial Techhttps://radicalaero.com

Last Round

Seed

Apr 24, 2024

Est. Valuation

$1.79M

Total Funding Raised

$5M

Momentum

Top 10%

of companies Caplight tracks

Company Overview

Radical is an aerospace company that develops autonomous, solar-powered aircraft designed for continuous, long-duration flight in the stratosphere to provide telecommunications, earth observation, and climate sensing services.

Sector

Frontier & Industrial Tech

Verticals

Aviation & Drones, Drones & UAVs, Space Technology, Defense Tech

Business Model

B2G

Customer Profile

Data as a Service, Services & Consulting

AI Layer

Application

Keywords

unmanned aerial systemsUASsolar-powered aircrafthigh-altitude pseudo-satelliteHAPSaerodynamic controlflight control solutionsstratospheric droneautonomous flightedge computingISRintelligence, surveillance, and reconnaissancepersistent surveillancedata as a serviceDaaSdefense tech

Historical Pricing

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Caplight Momentum Score

Proprietary index based on bid/ask volume and sentiment.

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Radical Comparables

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

Radical comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
Swift Engineering, Inc.
78%
Kea Aerospace
78%
Landing Zones Canada Inc.
77%

Radical Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
SeedApr 24, 2024
AcceleratorJan 4, 2023

Key People

Founding team and executive leadership

Cyriel Notteboom

Co-Founder & CTO

Founding Team

James Thomas

Co-Founder & CEO

Founding Team

Radical Investors

Notable investors and investment history

Radical investors
InvestorRounds
Scout VenturesSeed
InflectionSeed
Y CombinatorAccelerator, Seed

Market signals

Structured signals derived from secondary market and firmographic data.

  • Jul 27, 2026

    Open roles increased to 17, 131% of headcount.

  • Oct 1, 2025

    Subscale solar aircraft completed a non-stop flight over 24 hours.

Radical Filings

Explore SEC and related filing metadata, where available.

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

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Frequently Asked Questions

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

Is Radical a public or private company?

Radical is a private company.

What is the current stock price of Radical?

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

How much is Radical worth (valuation)?

Valuation information for Radical is not publicly available.

Can I buy Radical stock?

Radical 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 Radical's last funding round?

Radical's most recent funding round was Seed on April 24, 2024.

Who are the main investors in Radical?

Key investors in Radical include Scout Ventures.

Will Radical IPO soon?

No public IPO plans have been announced for Radical.

How can I track Radical secondary market activity?

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

Firmographic Details

HeadquartersSeattle, Washington
Employee Range8
Year Founded2022
Last FundingApr 24, 2024

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