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Astral Systems

Astral Systems

Private
BristolEnergy & Sustainabilityhttps://www.astralsystems.com/

Last Round

Series A

Jun 23, 2026

Est. Valuation

$83.2M

Total Funding Raised

$35.87M

Momentum

Top 5%

of companies Caplight tracks

Company Overview

Astral Systems is a nuclear energy company that develops and commercializes compact, multi-state fusion (MSF) reactors for on-demand neutron production with applications in medical isotope production, research, and energy.

Sector

Energy & Sustainability

Verticals

Biotech Equipment, Medical Imaging, Renewable Energy, Pharma Supply Chain

Business Model

B2B

Customer Profile

Hardware Sales, Government Contracts, Services & Consulting, Data as a Service

AI Layer

Non-AI

Keywords

multi-state fusioncompact fusion reactormedical isotope productionnuclear medicineneutron sourcedecentralized isotope productionradiopharmaceuticalssmall fusion reactorpharma supply chainfusion technologyneutron irradiationbenchtop fusionfusion reactor testbeddeep techfusion energy

Historical Pricing

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Caplight Momentum Score

Proprietary index based on bid/ask volume and sentiment.

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Astral Systems Comparables

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Astral Systems comparables — related companies by embedding similarity
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StandardX
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77%
Ionetix
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Astral Systems Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
Series AJun 23, 2026
SeedFeb 6, 2025

Key People

Founding team and executive leadership

Talmon Firestone

Chief Executive Officer, Co-Founder

Founding Team

Tom Wallace-Smith

Chief Technology Officer

Executive Team

Astral Systems Investors

Notable investors and investment history

Astral Systems investors
InvestorRounds
Playfair CapitalSeries A, Seed
Blast.clubSeries A
Cambridge AngelsSeed
DaphniSeries A
SpeedinvestSeries A, Seed
Silicon Roundabout VenturesSeed
Avonmore DevelopmentsSeed

Market signals

Structured signals derived from secondary market and firmographic data.

  • Aug 1, 2026

    Grew 62% QoQ, from 29 to 47 employees.

  • Jul 26, 2026

    Monthly visitors grew 69% MoM, reaching 4.2K.

Astral Systems Filings

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Astral Systems filings preview — column headings only; records require access
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Frequently Asked Questions

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

Is Astral Systems a public or private company?

Astral Systems is a private company.

What is the current stock price of Astral Systems?

Astral Systems is a private company, so its shares have no public market price. Caplight tracks Astral Systems's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.

How much is Astral Systems worth (valuation)?

Astral Systems's valuation is estimated at $83.2M based on funding round data.

Can I buy Astral Systems stock?

Astral Systems shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.

When was Astral Systems's last funding round?

Astral Systems's most recent funding round was Series A on June 23, 2026.

Who are the main investors in Astral Systems?

Key investors in Astral Systems include Playfair Capital, Speedinvest, Mercia Asset Management, Mercia Ventures.

Will Astral Systems IPO soon?

No public IPO plans have been announced for Astral Systems.

How can I track Astral Systems secondary market activity?

Caplight tracks bids, offers, and trades in Astral Systems's shares on secondary markets.

Firmographic Details

HeadquartersBristol
Employee Range38
Year Founded2021
Last FundingJun 23, 2026

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