X-energy
PublicX-energy is now publicly traded
The data on this page reflects X-energy's private-market history up to the point it went public, including its funding rounds, valuation, and investors.
Last Round
Series D
Nov 24, 2025
Total Funding Raised
$1.87B
Company Overview
X-energy is an advanced nuclear reactor and fuel technology company that develops Generation IV high-temperature gas-cooled nuclear reactors and proprietary TRISO-X fuel to provide clean, safe, and reliable energy.
Sector
Energy
AI Layer
Non-AI
Keywords
small modular reactorSMRTRISO-X fueladvanced nuclearhigh-temperature gas-cooled reactorHTGRnext-gen nuclearpebble-bed reactorbaseload powerprocess heatnuclear fuel fabricationmobile microreactorindustrial decarbonizationnuclear engineering servicesAdvanced Reactor Demonstration ProgramARDP
X-energy Comparables
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X-energy Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series D | Nov 24, 2025 | ||||
| Series C Extension | Feb 6, 2025 | ||||
| Series C | Dec 5, 2023 | ||||
| Grant | Aug 23, 2022 | ||||
| Series B | Oct 1, 2021 | ||||
Grant | Oct 14, 2020 |
Key People
Founding team and executive leadership
X-energy Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Jane Street | Series C Extension, Series D |
| Corner Capital | Series D |
| University of Michigan | Series C Extension |
| Reaves Asset Management | Series D |
| Corner Capital Management | Series D |
| NGP Energy Capital | Series C Extension, Series D |
| Galvanize Climate Solutions | Series D |
X-energy Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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Firmographic Details
HeadquartersRockville, Maryland
Employee Range1,858
Year Founded2009
Last FundingNov 24, 2025