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Newcleo

Energy · Lyon, France · Founded 2021 · Public via SPAC 2026

Newcleo is a company that designs and builds the next generation of nuclear reactors, the lead-cooled fast reactors (LFRs) fuelled with MOX. These reactors are an innovative way to provide the world with a safe and stable power source while reducing volumes of nuclear waste. This type of nuclear technology has recently been included within the perimeter of the EU Taxonomy of environmentally sustainable economic activities, by the EU Commission. Newcleo is different from other businesses in the same industry because of the key characteristics of their projects. These include the use of lead fast reactors and the use of MOX. They are also looking to recruit talented people to join their growing community of energy innovators, so they can continue to innovate and create new solutions for global decarbonisation. Newcleo is a profitable business that is making a difference in the world. They are helping to reduce the impacts of climate change and are providing a safe and reliable energy source. This is helping to create a better future for everyone.

Valuation $1–2.5B
Revenue $50–100M
Headcount 500–1k
Total funding $500M–1B
Power Law Unicorn$1–10B valuation tier Colt$25–100M revenue
Featured in
News Newcleo to list on Nasdaq via $2.4B SPAC merger with NewHold Investment Corp III May 27, 2026 Market map Defence, Security and Resilience startups in Europe Market map Novel energy startups decarbonizing Europe Market map Nuclear Fission

Investors

19 investors on Newcleo's cap table

Sourced from Dealroom's funding history. Investor profile links are shown where available.

Seed 4 investors entered at this stage
LIFTT
Investors' club
Exor Ventures
Bpifrance
Series A 14 investors entered at this stage
Banca Patrimoni Sella & C
Claudio Costamagna
Azimut Group
Walter Tosto
Ingérop
Inarcassa
Cementir Holding
NextChem
Indaco Venture Partners
Kairos
CERN Pension Fund
Danieli & C.
Azimut Investments
Orion Valves
Series B+ 1 investor entered at this stage
NewHold Investment Corp III

Global footprint

Where Newcleo has talent and traffic

Workforce by country
18 countries with
team presence
🇫🇷 France47.4%
🇮🇹 Italy42.9%
🇬🇧 United Kingdom5.5%
🇨🇭 Switzerland0.8%
🇺🇸 United States0.6%
Top 5 of 18 shown
Web traffic by country
22K monthly visits
across markets
🇮🇹 Italy32.3%
🇫🇷 France23.2%
🇬🇧 United Kingdom14.5%
🇺🇸 United States14.1%
🇨🇭 Switzerland7.3%
Top 5 markets shown

Talent graph

The shape of Newcleo's talent

Dealroom maps Newcleo's team person by person — pinpointing the standout operators and scoring them across the six dimensions investors underwrite. The counts and shape below are a public preview; the named individuals and exact scores live in the platform.

19 standout operatorsDealroom-flagged across the org
1 AI specialistpinpointed by name
614 employees mappedperson by person
DimensionScore
AI Talentlive Score hidden — book a demo
Engineering Score hidden — book a demo
Product Score hidden — book a demo
Go-to-market Score hidden — book a demo
Leadership Score hidden — book a demo
Research Score hidden — book a demo
Book a demo to unlock Newcleo's exact scores

Source: Dealroom Talent Intelligence. Public profiles show counts and the team's shape only — request a demo for the named individuals, per-person seniority and tenure, and team benchmarks vs peers.

Patent intelligence

$17M patent portfolio · 19 active families

Estimated portfolio value
$17M
0.71% of market cap · 6.4× larger than top peer Helion Energy ($3M)
19 active patent families
Where Newcleo innovates Atomic physicsControl circuitHeat exchangerLiquid metalMechanical engineering

Where Newcleo concentrates vs peers

Each axis is a top-10 topic across Newcleo and its closest peers. #1 = 100, #10 = 10, absent = 0.

Compare against

Source: Dealroom Patent Intelligence · Patsnap. Request a demo for the full per-sub-category breakdown, individual records, and quality-score history.

Market sentiment

What the market is saying about Newcleo

An AI-synthesized read of the highest-engagement posts about Newcleo on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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