NEWCaplight raises a $16M Series A, led by BlackRock and Fin Capital →
Skip to main content
Caplight Logo









Newcleo

Newcleo

Private
ParisEnergy & Sustainabilityhttps://www.newcleo.com/

Last Round

Series A

Feb 4, 2026

Total Funding Raised

$354M

Momentum

Top 25%

of companies Caplight tracks

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 & Sustainability

Verticals

Renewable Energy, Clean Manufacturing

Business Model

B2B

Customer Profile

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

AI Layer

Non-AI

Keywords

small modular reactorSMRlead-cooled fast reactorLFRnuclear waste-fueledMOX fueladvanced nuclearnext-gen nuclearnuclear fuel fabricationcarbon-free baseloadclean energy technuclear energy startupenergy transitionnuclear waste recyclingdeep tech energy

Historical Pricing

Historical view of private secondary pricing and transaction trends.

Unlock Pricing Charts

Sign up to view complete historical pricing and secondary transactions.

Caplight Momentum Score

Proprietary index based on bid/ask volume and sentiment.

View Momentum History

Track how buyer interest and sentiment changes over time.

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%
Ansaldo Energia S.p.A.
78%
Moltex Energy
78%

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

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

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

Market signals

Structured signals derived from secondary market and firmographic data.

  • Apr 8, 2026

    Reached over 100 strategic partnerships and collaborations.

  • Dec 18, 2025

    Direct investment in a MOX plant for reactor fuel production.

Newcleo Filings

SEC and related filings with document metadata.

Data table
TypedDateAmount OfferedAmount SoldFillingPagesDownload
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation

Newcleo Filings

SEC and related filings with document metadata.

Frequently Asked Questions

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

Firmographic Details

HeadquartersParis
Employee Range616
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.

Requires verified institutional or accredited status.