Skip to main content
Caplight Logo









Newcleo

Newcleo

Public
London, EnglandEnergyhttps://newcleo.com

Newcleo is now publicly traded

The data on this page reflects Newcleo's private-market history up to the point it went public, including its funding rounds, valuation, and investors.

Last Round

Series A

Feb 4, 2026

Total Funding Raised

$670M

Company Overview

Newcleo is a nuclear energy company that develops Generation IV small modular lead-cooled fast reactors (LFRs) fueled by reprocessed nuclear waste.

Sector

Energy

Verticals

Advanced Manufacturing, CleanTech, Climate Tech, Industrials, Infrastructure, Manufacturing

AI Layer

Non-AI

Keywords

small modular reactorSMRlead-cooled fast reactorLFRnuclear waste recyclingMOX fueladvanced nucleargen IV nuclearbaseload powernuclear startupclean energy technuclear fuel cyclecarbon-free energynext-gen nuclearnuclear infrastructure

Newcleo Comparables

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

Newcleo comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
Blykalla
82%
NAAREA
79%
Ansaldo Energia S.p.A.
78%
Book a demo to see all comparables

For institutional investors. Book with your work email.

Newcleo Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
Series AFeb 4, 2026
Series ASep 30, 2024
VC RoundJun 20, 2022
SeedAug 31, 2021
Book a demo to see all 4 rounds

For institutional investors. Book with your work email.

Key People

Founding team and executive leadership

Elisabeth Rizzotti

Founder & Chief Operating Officer Managing Director Italy

Founding Team

Stefano Buono

Founder and Chief Executive Officer

Founding Team

Stéphane Calpena

Global Licensing Director Executive Committee Member Under The CEO

Executive Team

Cristiana Vieno

Deputy MD Italy And CFO, Head Of Finance

Executive Team

For institutional investors. Book with your work email.

Newcleo Investors

Notable investors and investment history

Newcleo investors
InvestorRounds
InarcassaSeries A
UK governmentVC Round
EniVC Round
AzimutSeed
Indaco Venture Partners SGRSeries A
MaireSeries A
Alchimia InvestmentsVC Round
Book a demo to see all investors

For institutional investors. Book with your work email.

Recent news

Latest coverage and updates

  • acquiresNov 2, 2026

    Newcleo Ltd acquires Gruppe Rütschi as part of its vertical integration approach pursued since 2023.

  • is_developingOct 29, 2026

    Newcleo Ltd, an Italian-French startup, develops fourth generation lead-cooled fast reactors and collaborates with Fincantieri.

  • invests_into_assetsOct 15, 2026

    Newcleo Ltd plans to directly invest in a mixed uranium/plutonium oxide (MOX) plant in France to fuel its small modular lead-cooled fast reactors.

  • expands_facilitiesOct 15, 2026

    Newcleo Ltd expands its facilities by inaugurating a EUR10 million advanced nuclear fuel engineering, testing and training centre in Chusclan, France, on Oct 15th '26.

  • expands_facilitiesOct 14, 2026

    Newcleo Ltd expands its physical facilities in France by inaugurating FASTER, an advanced nuclear fuel engineering, testing and training center in Chusclan, with an investment of around €10 million, on Oct 14th '26.

Book a demo to see all news

For institutional investors. Book with your work email.

Newcleo Filings

Explore SEC and related filing metadata, where available.

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

Filing documents are not displayed on this public page. Request access to learn about available coverage.

Book a demo

For institutional investors. Book with your work email.

Firmographic Details

HeadquartersLondon, England
Employee Range524
Year Founded2021
Last FundingFeb 4, 2026

Institutional Data Access

Join leading institutional investors using Caplight to access private market data, discover pricing, and execute secondary block trades.

Book a demo

For institutional investors. Book with your work email.

See something wrong or outdated?