Radical logo — Building persistent, high-performance infrastructure in the...

Radical

Building persistent, high-performance infrastructure in the stratosphere.

Founded 2022 United States Seattle, United States 13 employees Seed Total: $4.97M Internet, Space +1

General Information

Company Name Radical
Founded Year 2022
Location United States Seattle, United States
Employees 13
Industries Internet, Space, Telecom
Funding Stage Seed
Offices as of Oct 2026
Seattle, United States
Social

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Recorded by Bounce Watch from public sources. Every entry below carries the date we observed it, and when we have not looked recently the page says so rather than leaving silence to imply nothing happened.

LinkedIn Growth Nov 01, 2026

LinkedIn followers increased by 10% over 30 days (2,826 → 3,095).

Major Customer Win Oct 29, 2026

Radical was selected by ARIA for the Enduring Atmospheric Platforms program.

About Radical

Radical

Slogan: Building high-altitude solar-powered aircraft

Description: Radical makes high altitude solar-powered aircraft. Their aircraft are able to fly continuously in the stratosphere without landing, providing an inexpensive, zero-emissions way to connect and observe Earth like never before.

Founded: 2022

Industries: Internet, Space, Telecom

Headquarter: United States

Last Investment: $4.47M Seed Round investment at 05 January 2024

Last Investment Investors: Y Combinator, Scout Ventures, Inflection Mercury Fund

Radical focuses on developing high-altitude solar-powered aircraft, positioning itself in the intersection of internet, space, and telecom industries. The last investment, a $4.47M seed round, was received from notable investors including Y Combinator, Scout Ventures, and Inflection Mercury Fund in January 5, 2024. Based in the United States, Radical aims to revolutionize air travel and observation capabilities with its innovative, zero-emissions technology.

Business keywords: solar-powered aircraft, high-altitude, stratosphere flight, zero-emissions, technology, aerospace, innovation, earth observation

Funding Rounds & Investors (2)

View All
Funding Stage Amount Investors Lead Investors Date
Seed Round $4.47M 3
Y Combinator, Scout Ventures +1
05 Jan 2024
Pre Seed Round $500.00K 2
Y Combinator, Inflection.xyz
05 Apr 2023

Radical Alternatives & Competitors

View All Alternatives
Radical vs
Skydweller Aero
Skydweller Aero United States

Skydweller Aero Inc. is developing a fleet of Perpetual Flight® solar-powered aircraft with heavy pa...

Series A
71 employees
Drones, Government and Military
Radical vs
Sceye
Sceye United States

Sceye is opening up access to the stratosphere, in the same way satellites opened up access to orbit...

Series C
63 employees
Internet, Renewable Energy
Radical vs
Devorto
Devorto United States

Building an aircraft that never has to land.

Pre-Seed
3 employees
Drones, Space

FAQ About Radical

Building persistent, high-performance infrastructure in the stratosphere.
Radical was founded in 2022.
Radical is headquartered in Seattle, United States.
Radical operates in Internet, Space and Telecom. Its work centres on solar-powered aircraft, high-altitude, stratosphere flight and zero-emissions.
Radical has approximately 13 employees.
Radical has completed 2 funding rounds, raising a total of $4.97M. The latest funding stage is Seed.
Top alternatives and competitors to Radical include Skydweller Aero, Sceye, Devorto, STRATOSYST, NewSpace Research and Technologies. These companies operate in related industries and serve comparable markets. You can compare them side by side on Bounce Watch.
Radical and Skydweller Aero are both companies in similar industries. Compare their funding, team size, growth signals, and market position on Bounce Watch to see which one fits your needs.

Source: BounceWatch company record for Radical, https://bouncewatch.com/company/radical, updated 20 September 2026. When citing, please name BounceWatch and link this page.

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