new cleo valuation, funding and investors

new cleo works in nuclear reactor design and engineering, based in Paris, France. Founded in 2021, it has about 607 employees.

Renewable energy companies Paris Growth Equity

VALUATION · TODAY

$906M −19% after Growth

Range $591M – $1.38B · Grade B

TODAY

+12 MO

$2.00B

$4.00B

$6.00B

2022

2023

2024

2025

2026

2027

Seed $118M

Growth $315M

Series A $148M

Growth $88.6M

ValuationBefore first round12-month outlook: where it points, how wide it fansHover the past: the outlook shows what was predicted then

HEADCOUNT · TODAY607 employees

−5%6m growth

−15%1y growth

+24%2y growth

200

400

600

800

Data from Mar 2022

TODAY

Predicted in 1 yr $738M −19% vs today

Predicted next raise $97.0M if a round comes

Winding-down probability 88%

Last round: Growth · $88.6M · Feb 2026
Valuation at last round: $903M · implied
Headcount: 607 · down
Grade: B
Founded: 2021

How VCMC values companies →

new cleo valuation today

VCMC values new cleo at $906M today, with a range of $591M to $1.4B and a grade of B. The valuation starts from its last funding round, a growth round in Feb 2026.

Valuation by date (73 rows)

Each point is what the model would have shown on that date, using only what was known then; before its first round, a company is valued as a startup because it later raised.

new cleo: valuation by date, as the model would have shown it on each date
Date	Valuation	Range	Predicted in 1 yr	Phase	Headcount	Trend	Grade	Winding-down probability
1 Jan 2021	$11.4M	$4.14M – $31.2M	$12.7M (+11%)	before first round	–	unknown	D	0%
1 Feb 2021	$11.5M	$4.18M – $31.5M	$12.8M (+11%)	before first round	–	unknown	D	0%
1 Mar 2021	$11.6M	$4.21M – $31.8M	$12.8M (+11%)	before first round	–	unknown	D	0%
1 Apr 2021	$11.7M	$4.25M – $32.1M	$12.9M (+11%)	before first round	–	unknown	D	0%
1 May 2021	$11.8M	$4.29M – $32.4M	$13.0M (+11%)	before first round	–	unknown	D	0%
1 Jun 2021	$11.9M	$4.33M – $32.7M	$13.1M (+10%)	before first round	–	unknown	D	0%
1 Jul 2021	$12.0M	$4.37M – $33.0M	$13.2M (+10%)	before first round	–	unknown	D	0%
1 Aug 2021	$12.1M	$4.41M – $33.3M	$13.3M (+10%)	before first round	–	unknown	D	0%
1 Sep 2021	$603M	$395M – $1.8B	$1.2B (+100%)	after a round	–	unknown	C	0%
1 Oct 2021	$638M	$395M – $1.8B	$1.2B (+89%)	after a round	–	unknown	C	0%
1 Nov 2021	$677M	$395M – $1.8B	$1.2B (+78%)	after a round	–	unknown	C	0%
1 Dec 2021	$716M	$395M – $1.8B	$1.2B (+68%)	after a round	–	unknown	C	0%
1 Jan 2022	$760M	$395M – $1.8B	$1.2B (+58%)	after a round	–	unknown	C	0%
1 Feb 2022	$806M	$395M – $1.8B	$1.2B (+49%)	after a round	–	unknown	C	0%
1 Mar 2022	$850M	$395M – $1.8B	$1.2B (+42%)	after a round	31	unknown	C	0%
1 Apr 2022	$901M	$395M – $1.8B	$1.2B (+33%)	after a round	31	unknown	C	0%
1 May 2022	$954M	$395M – $1.8B	$1.2B (+26%)	after a round	31	unknown	C	0%
1 Jun 2022	$1.0B	$395M – $1.8B	$1.2B (+19%)	after a round	31	unknown	C	0%
21 Jun 2022	$2.0B	$1.4B – $3.1B	$2.2B (+10%)	after a round	31	unknown	B	0%
1 Jul 2022	$2.0B	$1.4B – $3.1B	$2.2B (+10%)	after a round	31	unknown	B	0%
1 Aug 2022	$2.0B	$1.4B – $3.1B	$2.2B (+9%)	after a round	31	unknown	B	0%
1 Sep 2022	$2.0B	$1.4B – $3.1B	$2.2B (+8%)	after a round	31	unknown	B	0%
1 Oct 2022	$2.0B	$1.4B – $3.1B	$2.2B (+7%)	after a round	31	unknown	B	0%
1 Nov 2022	$2.0B	$1.4B – $3.1B	$2.2B (+6%)	after a round	31	unknown	B	0%
1 Dec 2022	$2.1B	$1.4B – $3.1B	$2.2B (+5%)	after a round	31	unknown	B	0%
1 Jan 2023	$2.1B	$1.4B – $3.1B	$2.2B (+5%)	after a round	31	unknown	B	0%
1 Feb 2023	$2.5B	$1.8B – $4.2B	$3.0B (+17%)	after a round	130	growing	B	0%
1 Mar 2023	$2.6B	$1.8B – $4.2B	$3.0B (+13%)	after a round	130	growing	B	0%
1 Apr 2023	$2.7B	$1.9B – $4.2B	$3.0B (+9%)	after a round	130	growing	B	0%
1 May 2023	$2.8B	$1.9B – $4.2B	$3.0B (+6%)	after a round	130	growing	B	0%
1 Jun 2023	$2.9B	$1.9B – $4.2B	$3.0B (+2%)	after a round	130	growing	B	0%
1 Jul 2023	$3.0B	$1.9B – $4.2B	$3.0B (0%)	after a round	130	growing	B	0%
1 Aug 2023	$3.0B	$1.9B – $4.2B	$3.0B (0%)	after a round	130	growing	B	0%
1 Sep 2023	$3.0B	$1.7B – $4.2B	$3.0B (0%)	after a round	130	unknown	B	0%
1 Oct 2023	$3.0B	$1.6B – $4.2B	$3.0B (0%)	after a round	130	unknown	B	0%
1 Nov 2023	$3.5B	$2.2B – $4.9B	$3.5B (0%)	after a round	270	growing	B	0%
1 Dec 2023	$3.5B	$2.1B – $4.9B	$3.5B (0%)	after a round	270	growing	B	0%
1 Jan 2024	$3.5B	$2.1B – $4.9B	$3.5B (0%)	after a round	270	growing	B	0%
1 Feb 2024	$3.5B	$2.1B – $4.9B	$3.5B (0%)	after a round	270	growing	B	0%
1 Mar 2024	$3.5B	$2.1B – $4.9B	$3.5B (0%)	after a round	270	growing	B	0%
1 Apr 2024	$3.7B	$2.2B – $5.3B	$3.7B (0%)	after a round	360	growing	B	0%
1 May 2024	$3.7B	$2.2B – $5.3B	$3.7B (0%)	after a round	360	growing	B	0%
1 Jun 2024	$3.7B	$2.2B – $5.3B	$3.7B (0%)	after a round	360	growing	B	0%
1 Jul 2024	$3.7B	$2.1B – $5.3B	$3.7B (0%)	after a round	360	growing	B	0%
1 Aug 2024	$4.0B	$2.2B – $5.6B	$4.0B (0%)	after a round	490	growing	B	0%
1 Sep 2024	$4.0B	$2.2B – $5.6B	$4.0B (0%)	after a round	490	growing	B	0%
1 Oct 2024	$756M	$496M – $2.1B	$1.4B (+80%)	after a round	490	growing	C	0%
1 Nov 2024	$794M	$496M – $2.1B	$1.4B (+71%)	after a round	490	growing	C	0%
1 Dec 2024	$833M	$496M – $2.1B	$1.4B (+63%)	after a round	530	growing	C	0%
1 Jan 2025	$876M	$496M – $2.1B	$1.4B (+55%)	after a round	530	growing	C	0%
1 Feb 2025	$921M	$496M – $2.1B	$1.4B (+47%)	after a round	530	growing	C	0%
1 Mar 2025	$963M	$496M – $2.1B	$1.4B (+41%)	after a round	530	growing	C	0%
1 Apr 2025	$1.0B	$496M – $2.1B	$1.4B (+34%)	after a round	530	growing	C	0%
1 May 2025	$1.1B	$496M – $2.1B	$1.4B (+28%)	after a round	530	growing	C	0%
1 Jun 2025	$1.1B	$496M – $2.1B	$1.4B (+22%)	after a round	530	growing	C	0%
1 Jul 2025	$1.2B	$496M – $2.1B	$1.4B (+16%)	after a round	530	growing	C	0%
1 Aug 2025	$1.3B	$531M – $2.2B	$1.5B (+11%)	after a round	722	growing	C	0%
1 Sep 2025	$1.4B	$530M – $2.2B	$1.5B (+5%)	after a round	718	growing	C	0%
1 Oct 2025	$1.5B	$530M – $2.2B	$1.5B (0%)	after a round	718	growing	C	0%
1 Nov 2025	$1.5B	$538M – $2.2B	$1.5B (0%)	after a round	718	growing	C	0%
1 Dec 2025	$1.4B	$507M – $2.2B	$1.4B (0%)	after a round	639	up	C	0%
1 Jan 2026	$1.4B	$502M – $2.2B	$1.4B (0%)	after a round	639	up	C	0%
1 Feb 2026	$1.4B	$497M – $2.2B	$1.4B (0%)	after a round	639	up	C	0%
24 Feb 2026	$903M	$593M – $1.5B	$993M (+10%)	after a round	639	up	B	0%
1 Mar 2026	$905M	$593M – $1.5B	$993M (+10%)	after a round	639	up	B	0%
1 Apr 2026	$912M	$593M – $1.5B	$993M (+9%)	after a round	639	up	B	0%
1 May 2026	$919M	$593M – $1.5B	$993M (+8%)	after a round	639	up	B	0%
1 Jun 2026	$908M	$593M – $1.4B	$852M (-6%)	after a round	619	down	B	80%
1 Jul 2026	$909M	$593M – $1.4B	$833M (-8%)	after a round	619	down	B	80%
1 Aug 2026	$911M	$593M – $1.4B	$813M (-11%)	after a round	619	down	B	80%
1 Sep 2026	$912M	$593M – $1.4B	$793M (-13%)	after a round	619	down	B	80%
1 Oct 2026	$906M	$591M – $1.4B	$753M (-17%)	after a round	607	down	B	88%
24 Oct 2026	$906M	$591M – $1.4B	$738M (-19%)	after a round	607	down	B	88%

Key facts about new cleo

Founded: 2021
Headquarters: Paris, France
Employees: about 607 -15% in a year
Total raised: $670M
Funding rounds: 4
Last round: Growth Equity Feb 2026

new cleo was founded in 2021 by Elisabeth Rizzotti, Luciano Cinotti and Stefano Buono.

new cleo funding history

new cleo has 4 funding rounds on record, from Aug 2021 to Feb 2026, $670M in total. None disclosed a valuation.

Growth Equity 23 Feb 2026
With Kairos, Indaco Venture Partners, Azimut Investments, CERN Pension Fund, Walter Tosto, Danieli, Cementir Holding, Orion Valves, NextChem, Family Offices.
Sources: gmk.center, esgtoday.com, nucnet.org and 1 more
$89M
Series A 30 Sep 2024
Led by Inarcassa, Walter Tosto. Individuals: Walter Tosto.
Sources: rothschildandco.com, londontechwatch.com, ipo.club
$148M
Growth Equity 20 Jun 2022
With Exor NV, Azimut Holding SpA, MACAN, Banca Patrimoni Sella & C..
Sources: techfundingnews.com, energyconnects.com, moneycontrol.com and 1 more
$315M
Seed 31 Aug 2021
With Exor Ventures, LIFTT, Club degli Investitori.
Sources: liftt.com, preoncapital.com, startupbusiness.it
$118M

new cleo investors

18 investors have backed new cleo; Walter Tosto and Inarcassa led at least one round.

Walter Tosto lead, 2 rounds
Inarcassa lead
Azimut Holding SpA
Azimut Investments
Banca Patrimoni Sella & C.
Cementir Holding
CERN Pension Fund
Danieli
Exor NV
Exor Ventures
Family Offices
Kairos
MACAN
NextChem
Orion Valves

What new cleo does

new cleo works in renewable energy companies, with 13 recorded offerings and customers in nuclear energy.

new cleo Ltd is a French company engaged in nuclear energy, reactor design, MOX fuel manufacturing, and nuclear engineering, construction, and project execution. The company develops and operates lead-cooled fast reactors, Gen-IV Advanced Modular Reactors, and MOX fuel fabrication plants, and is involved in the development of small modular reactor supply chains. new cleo also provides skills and services for both its own projects and the broader nuclear industry, and is part of the new cleo Group, which includes SRS, Fucina, and Rütschi Group.

Description from Veridion's company data.

Products and services

Nuclear Reactor Design and Engineering
Advanced Modular Reactor Construction
Lead-Cooled Fast Reactor Development
MOX Fuel Manufacturing
Reprocessed Waste Fuel Production
Nuclear Fuel Cycle Solutions
Nuclear EPC Project Execution
Nuclear Engineering Consulting
Nuclear Waste Management Services
Sustainable Nuclear Energy Solutions
Graduate Nuclear Engineering Training Services
Nuclear Industry Skills Development Services
Small Modular Reactor Supply Chain Support

Markets

Nuclear Energy

Technology

Lead-Cooled Fast Reactor Technology
MOX Fuel Technology
Liquid Lead Cooling Technology
Reprocessed Nuclear Waste Fuel Cycle

Business model

Business-to-Business
Service Provider
Manufacturing
Enterprise

Industry codes (NAICS)

541330 Engineering Services 40% match
237130 Power and Communication Line and Related Structures Construction 30% match
325180 Other Basic Inorganic Chemical Manufacturing 30% match

Questions about new cleo

What is new cleo worth?

Valuation $906M (range $591M to $1.4B), as of 24 Oct 2026.

Has new cleo raised money?

new cleo has 4 funding rounds on record, from Aug 2021 to Feb 2026, $670M in total. None disclosed a valuation.

Who has invested in new cleo?

Walter Tosto, Inarcassa, Azimut Holding SpA, Azimut Investments, Banca Patrimoni Sella & C. and Cementir Holding, and 12 more. Lead investors include Walter Tosto and Inarcassa.

How many people work at new cleo?

About 607, down 15% over the last year. Headcount rose from 31 in Feb 2022 to 722 in Jul 2025, then fell to 607 in Sep 2026.

What does new cleo do?

new cleo works in renewable energy companies, with 13 recorded offerings and customers in nuclear energy. Its main offerings are nuclear reactor design and engineering, advanced modular reactor construction and lead-cooled fast reactor development.

When was new cleo founded, and where is it based?

new cleo was founded in 2021 and is based in Paris, France. It has about 607 employees, down 15% over the last year.

How we value companies Report an issue