X-Energy Reactor Company LLC
X-Energy Reactor Company, LLC, is a leading developer of advanced small modular nuclear reactors and fuel technology for clean energy generation that is redefining the nuclear energy industry through its development of safer and more efficient advanced small modular nuclear reactors and proprietary fuel to deliver reliable, zero-carbon and affordable energy to people around the world. X-energy’s simplified, modular, and intrinsically safe SMR design expands applications and markets for deployment of nuclear technology and drives enhanced safety, lower cost and faster construction timelines when compared with other SMRs and conventional nuclear.
Leadership & Board
- Current Number of Employees
- 1,630
- Current LinkedIn Followers
- 68,153
Latest Estimated Valuation
- Estimated Valuation
- ―
- Total Amount Raised
- $705M
- Total Funding Rounds
- 2
- Latest Funding Amount
- $5M
- Latest Funding Round
- Investment
- Post-Money Valuation
- ―
Company Momentum Positive
X-Energy Reactor Company LLC LinkedIn following is increasing, signaling rising market interest, while its workforce size remains relatively unchanged.
Employee Trend
X-Energy Reactor Company LLC had 1,630 employees as of October 12, 2026. The number of employees decreased by 7 (0.43%) week-over-week.
Social Trend
X-Energy Reactor Company LLC had 68,153 followers as of October 12, 2026. The number of followers increased by 277 (0.41%) week-over-week.
Main Enterprise Clients
A snapshot of major enterprise customers that use this private company’s products or services, highlighting its commercial reach and market adoption.
Funding Round
| Funding Date | Funding Round | Amount Raised | Post-Money Valuation |
|---|---|---|---|
| Jan 28, 2026 | Investment | $5.00M | ― |
| Nov 24, 2025 | Series D | $700.00M | ― |
Investors
| Investor Name | Funding Round |
|---|---|
| Stack Capital Group Inc. | Investment |
| Emerson Collective | Series D |
| NGP | Series D |
| Jane Street | Series D |
| ARK Invest | Series D |
| Point72 | Series D |
| Segra Capital Management | Series D |
| XTX Ventures | Series D |
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