About X Energy
X Energy is a company based in Greenbelt (United States) founded in 2010 by Kam Ghaffarian. X Energy has raised $1.53 billion across 13 funding rounds from investors including Ares Management, Gov.uk and University of Michigan. The company has 246 employees. X Energy offers products and services including Xe-100, Xe-Mobile, and TRISO-X. X Energy operates in a competitive market with competitors including BWX Technologies, Helicity Space, Jimmy, Pulsar Fusion and Space Nuclear Power Corporation, among others.
- Headquarter Greenbelt, United States
- Employees 246
- Founders Kam Ghaffarian
- SectorsAerospace, Defense & MaritimeEnergy & Utilities
- Website category Heavy Industry and Engineering · Energy Industry
- Website x-energy.com
- Social LinkedIn X Facebook Instagram
- Legal Name X-Energy Inc
- Total Equity Funding$1.53B (USD)
in 13 rounds
- Latest Funding Round$700M (USD), Series D
Nov 2025
- InvestorsAres Management
& 21 more
- Employee Count246
Products & Services of X Energy
X Energy offers a comprehensive portfolio of products and services, including Xe-100, Xe-Mobile, and TRISO-X.
Advanced reactor with passive safety for clean energy production.
Portable reactor for flexible energy applications.
High-temperature fuel for extreme condition reactors.
Funding Insights of X Energy
X Energy has successfully raised a total of $1.53B across 13 strategic funding rounds. The most recent funding activity was a Series D round of $700 million completed in November 2025. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding $1.53B
- Total Rounds 13
- Last Round Series D — $700M
- First Round $6M
(Jan 2016)
- Investors Count 22
Latest 10 of 13 funding rounds of X Energy with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Nov 2025 | $700M | Series D | – | Jane Street | |
| Jun 2025 | $22.8M | Series C | – | – | – |
| Mar 2025 | – | Private Equity Round | – | – | |
| Feb 2025 | $200M | Series C | – | – | |
| Oct 2024 | $500M | Series C | – | – | |
| Apr 2024 | $4.22M | Grant | – | – | |
| Dec 2023 | $80M | Series C | – | Ares Management | – |
| Jan 2023 | $25M | Series C | – | DL E&C, Doosan Enerbility | – |
| Aug 2022 | $40M | Grant | – | – | |
| Dec 2021 | – | Seed | – | C5 Capital | – |
22 investors in total: 21 institutional and 1 angel.
Investors in X Energy
X Energy has secured backing from 22 investors, including venture fund, institutional, and angel investors. Prominent investors backing the company include Ares Management, Gov.uk and University of Michigan.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
Investment opportunities in emerging industries are focused on by Sporos. | – | sporoscapitalpartners.com | Marina Del Rey, United States | |
Alternative asset investment management firm | 1997 | aresmgmt.com | Los Angeles, United States | |
A global initiative focused on net-zero carbon emissions by 2040 through company commitments. | – | theclimatepledge.com | - | |
Tech-focused VC firm investing in Europe, the Middle East & Africa | – | c5capital.com | London, United Kingdom | |
High-risk energy technologies are funded through competitive grants. | – | arpa-e.energy.gov | Washington, Dc, United States | |
Investment firm focused on nuclear power sector and related industry investments. | 2013 | segracapital.com | Dallas, United States | |
Quantitative trading firm with a focus on technology and collaborative problem solving | 2000 | janestreet.com | New York, United States | |
- | – | emersoncollective.com | - | |
Sustainable energy infrastructure investments are managed by NGP fund. | – | ngpenergy.com | Dallas, United States | |
Graduation and postgraduate courses are offered in diverse academic streams. | 1817 | umich.edu | United States |
Investor details for X Energy
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
- Complete investor list
- Round participation
- Investor portfolios
- Co-investor network
Verified entity values are shown only after access is granted.
People of X Energy
123 people are tracked at X Energy (41 in leadership, 82 in team); the tracked headcount is 246.
| Name | Role | Group |
|---|---|---|
Kam Ghaffarian | Founder | Leadership |
J. Clay Sell | CEO | Leadership |
Robert Szyszlo | Chief Brand Officer | Leadership |
Jason Hill | Director, Global Business Development, Sales And Proposal Planning | Leadership |
Brad Morian | Senior Director, Digital Engineering | Leadership |
Mark Mize | SVP & CFO | Leadership |
Eben Mulder | SVP & Chief Scientist | Leadership |
Matt Welsh | VP & CIO | Leadership |
David Bannister | Chief Nuclear Officer | Leadership |
Carol Tansley | VP, UK New Build Projects | Leadership |
Alan Ho | VP & Chief Procurement Officer | Leadership |
Carol Lane | VP, Government Affairs | Leadership |
Sam Levenback | VP, Corporate Development | Leadership |
Marcy Sanderson | VP, Industrial Applications | Leadership |
Georgette Alexander-Morrison | VP, Capture & Proposal Management | Leadership |
Benjamin Reinke | Head of Global Business Development | Leadership |
Robert Leone | Senior Director, Supply Chain | Leadership |
Tim Bendt | VP, Contracts | Leadership |
Laura Garcia | VP, Corporate Controller | Leadership |
Dinkar Bhatia | Evp, Chief Commercial Officer | Leadership |
103 more people are available in the full profile.
Complete people profiles for X Energy
Full employee and board profiles, team structure, tenure and professional contact details require an active premium plan.
- Full employee list
- Team structure
- Board tenure
- Professional contacts
Verified entity values are shown only after access is granted.
IPO & Listings of X Energy
X Energy is a publicly listed company on the NASDAQ with ticker symbol XE in USA, operating in the Producer manufacturing sector. As a publicly traded entity, the company provides investors with opportunities to participate in its growth story through equity ownership. The listing enables access to capital markets, enhances corporate visibility, and provides liquidity for shareholders while maintaining transparency through regulatory compliance and regular financial disclosures.
- IPO date24 Apr 2026
- Listed onNASDAQ: XE
- Listed entityX-ENERGY INC
- Exchange sectorProducer manufacturing
- ISINUS98386P1021
- Share price$13.71 (-0.44% on the day) · 2026-10-09
- Market capitalisation$5.57B
- Volume (last session)3,620,950
Timeline of X Energy
4 dated milestones of X Energy across 16 years, from founding to its latest funding, stage changes and deals.
- Founded X Energy is founded.
- Funding First funding round of $6.0M.
- Funding Latest funding round, Series D, of $700.0M.
- IPO Lists on the stock exchange (IPO).
Competitors of X Energy
X Energy operates in a dynamic and competitive business environment, facing competition from various established players and emerging companies in the market. The competitive landscape includes prominent companies such as BWX Technologies, Helicity Space, Jimmy, Pulsar Fusion and Space Nuclear Power Corporation, among others.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| bwxt.com | 1867 | Lynchburg, United States | – | 8,995 | Nuclear energy technology solutions are developed and provided globally. | |
| helicityspace.com | 2018 | Berkeley, United States | $5M | – | Reusable rocket engines powered by nuclear fusion are manufactured. | |
| jimmy-energy.eu | 2021 | Levallois Perret, France | $17.3M | – | Batteries are manufactured by Jimmy in France since 2021. | |
| pulsarfusion.com | 2014 | Bletchley, United Kingdom | – | – | Plasma-propelled nuclear fusion energy systems are developed and provided. | |
| spacenukes.com | 2001 | Los Alamos, United States | – | – | Provides nuclear reactors for space missions, surface power, and energy needs in harsh environments. | |
| stratekglobal.com | 2022 | Centurion, South Africa | – | – | Stratek Global designs and develops helium-cooled nuclear reactors for energy security. | |
| falconspace.org | 2019 | Hawthorne, United States | – | – | Conducts experimental propulsion R&D, UAP reverse-engineering, and material analysis. |
Detailed competitors of X Energy
The full competitor set, operating metrics and side-by-side benchmarks require an active premium plan.
- Full competitor set
- Operating metrics
- Benchmarks
- Competitive positioning
Verified entity values are shown only after access is granted.
Web traffic of X Energy
The website of X Energy (x-energy.com) receives about 95.3K visits a month and ranks #388,468 among all websites worldwide, #4,764 in Energy Industry.
- Monthly visits95.3K
▼ 5.6% vs previous month
- Unique visitors32.4K
per month
- Global rank#388,468
among all websites
- Category rank#4,764
Heavy Industry and Engineering · Energy Industry
- Bounce rate33%
- Pages per visit2.4
- Average visit3 min 04 sec
- DevicesDesktop 60% · Mobile 40%
Websites whose visitors overlap most with X Energy. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
| terrapower.com | 100% | 73K | #610,615 | View details | |
| bakerhughes.com | 99% | 987K | #54,684 | View details | |
| westinghousenuclear.com | 99% | 211.3K | #207,380 | View details | |
| nucnet.org | 94% | – | #462,076 | View details | |
| powermag.com | 90% | – | #306,848 | View details | |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
All 8 similar websites and full traffic analytics for X Energy
The complete similar-websites list, audience overlap and engagement analytics require an active premium plan.
- 8 similar websites
- Audience overlap
- Engagement analytics
- Traffic by brand
Verified entity values are shown only after access is granted.
Latest news on X Energy
Complete news archive for X Energy
Full article history, source details, and older brand coverage require an active premium plan.
- Full article archive
- Source and publication date
- Older coverage
- Brand-specific news history
Verified entity values are shown only after access is granted.
Similar companies to X Energy
10 companies that operate in the same segment as X Energy (Space Research & Technology), ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
AI-based software suites are developed for navigation applications. | 1893 | Paris, France | – | USD 26.01 B | 83,020 | |
Cloud-based satellite imagery data and analytics solutions are provided. | 2010 | San Francisco, California, United States | USD 666.69 M | USD 307.73 M | 970 | |
Astra is engaged in providing space launch services. | 2016 | Alameda, California, United States | USD 136.93 M | – | – | |
Reusable launch vehicles for large payloads are developed and launched. | 2002 | Hawthorne, California, United States | USD 11.86 B | – | 13,612 | |
Reusable launch vehicles for small satellite payloads are provided. | 2006 | Long Beach, California, United States | USD 215 M | USD 436.21 M | 2,100 | |
Provider of space launch services using Vikram series launch vehicles | 2018 | Hyderabad, Telangana, India | USD 99.84 M | USD 3.39 M | 247 | |
Satellite-based imaging solutions are provided using synthetic aperture radar. | 2016 | Palo Alto, California, United States | USD 233.99 M | – | 191 | |
AI and microsatellite-based imaging solutions are developed for data monitoring. | 2014 | Espoo, Finland | USD 1.16 B | – | – | |
Satellite hardware is provided for space data constellations. | 2013 | Irvine, California, United States | USD 136 M | – | – | |
Private aerospace manufacturing and commercial launch solutions are provided. | 2017 | Chennai, Tamil Nadu, India | USD 72.14 M | – | 241 |
Unlock complete access to The Company Check
Get unrestricted viewing across everything we track — from companies and brands to investors, funding rounds, acquisitions, financials, and more.
- Unlimited viewing on all profiles Companies, investors, financials, funding, acquisitions & directors
- Full access to every database India & global coverage, advanced filters and rich profile details
- Always-on access from your team account Single premium plan for everything you see on the portal
Frequently Asked Questions about X Energy
X Energy was founded in 2010 and raised its 1st funding round 6 years after it was founded.
X Energy is headquartered in Greenbelt, United States. It is registered at Greenbelt, Maryland, United States.
J. Clay Sell is the current CEO of X Energy.
X Energy is a funded company, having raised a total of $1.53B across 13 funding rounds to date.
X Energy has 246 employees.
X Energy was founded in 2010 and is based in Greenbelt, United States. Operations focus on the nuclear energy sector, where small modular reactors and high-temperature gas-cooled designs are developed using tri-structural isotropic particle fuel. Pebble bed reactors are also offered, alongside services in zero-emission energy production, neutronics analysis, and nuclear engineering. Activities support advancements in clean power generation.
X Energy's top competitors include BWX Technologies, Helicity Space and Pulsar Fusion.
X Energy offers Xe-100, Xe-Mobile, and TRISO-X.
Yes, X Energy is publicly traded on NASDAQ under the ticker symbol XE.
X Energy has 22 investors. Key investors include Ares Management, Gov.uk, University of Michigan, DOE, and Jane Street.
X Energy operates through X Energy, Llc.