# X-energy funding: rounds and investors > X-energy has raised $1.5B across 2 rounds since 2024. Investors include Amazon. Every round with its source. Source: https://millionrounds.com/company/x-energy (Millionrounds; every figure on the page links to its filing or article) United States · [Funded startup](https://millionrounds.com/companies) # Who invested in *X-energy* 2 rounds we have observed, with the one investor named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. Cleantech Energy Raised 6 months ago Follow X-energy and see its new rounds in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Fcompany%2Fx-energy) Funding summary Updated 5 Nov 2026 **$1.5B** raised across 2 rounds since 2024, from 2 sources **$500M** Series C **$1.0B** Round - **Latest round:** Round, $1.0B May 2026 - **Step-up i:** 2× - **Investors:** 1 (1 led) See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2025 2026 **$500M** Series C **$1.0B** Round - **First round:** Series C, $500M - **Biggest round:** $1.0B - **Between rounds:** 19 months ## The rounds - **May 2026** Round **$1.0B** No investor was named in the report. Reported by Ventureburn - **Oct 2024** Series C **$500M** *1 new* [Amazon](https://millionrounds.com/fund/amazon) Lead Reported by Crunchbase News ## Founders and team From X-energy's own website: 1 founder, 19 on the team. **Dr. Kam Ghaffarian** Founder & Chairman - **Matt Welsh** Vice President & Chief Information Officer - **J. Clay Sell** Chief Executive Officer - **Alistair Black** Vice President, UK - **Bobby Dean** Vice President, Growth & Strategy - **Dinkar S. Bhatia** Executive Vice President - **Dragan Popovic** Executive Vice President - **Graham Cable** Vice President, Strategic Marketing & Customer Relationship Management - **Michael Gigliotti** Vice President, Business Operations - **Randy Eubanks** Vice President, Operations & Assurance - **Robert Taylor** Vice President, Regulatory Affairs and Licensing - **Sam Levenback** Senior Vice President - **Sean Miers** Vice President, Project Engineering - **Steve Miller** Executive Vice President - **Daniel Gross** Chief Financial Officer - **David Bannister** Chief Nuclear Officer - **David Royer** Co-General Counsel & Chief Compliance Officer - **Jesse B. Walker** Chief Supply Chain Officer - **Rachel Lappin Scheinman** Chief Human Capital Officer And 1 more on the team. ## Everyone who backed them [Amazon](https://millionrounds.com/fund/amazon) Company **1** round, led 1 Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=x-energy). ## Also claim to have backed them These 6 firms list X-energy as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above. [Corner](https://millionrounds.com/fund/corner-2) VC firm Per its own site [Litquidity Ventures](https://millionrounds.com/fund/litquidity-ventures) VC firm Per its own site [The Venture Collective](https://millionrounds.com/fund/the-venture-collective) VC firm Per its own site [Pittco Management](https://millionrounds.com/fund/pittco-management) Family office Per its own site [Manifest Venture Partners](https://millionrounds.com/fund/manifest-venture-partners) VC firm Per its own site [Stack Capital](https://millionrounds.com/fund/stack-capital) Private equity Per its own site ## Quick answers about X-energy ### Who invested in X-energy? X-energy's investors include Amazon. ### How much has X-energy raised? X-energy has raised $1.5B across 2 rounds since 2024. ### When did X-energy last raise? X-energy's most recent round was an Undisclosed round of $1.0B in May 2026. ### What was X-energy's biggest round? Its most recent round, $1.0B in May 2026, is also its largest on record. ### Who backed X-energy first? X-energy's first round on record, in Oct 2024, was backed by Amazon. ### What stage is X-energy at? X-energy's latest named round is an Undisclosed round, in May 2026. ### Where is X-energy based? X-energy is based in the United States. ### Who led X-energy's rounds? Amazon led the Series C in 2024. ## Companies like X-energy In the same sector, and raised in the last eighteen months. [**Group14 Technologies** $632M · Oct 2026](https://millionrounds.com/company/group14-technologies)[**Mammoth Energy Services** $58M · Oct 2026](https://millionrounds.com/company/mammoth-energy-services)[**Emvolon** $22M · Oct 2026](https://millionrounds.com/company/emvolon)[**Amogy** $125M · Oct 2026](https://millionrounds.com/company/amogy)[**LanzaJet** $67M · Oct 2026](https://millionrounds.com/company/lanzajet)[**Pivot Energy** $500M · Oct 2026](https://millionrounds.com/company/pivot-energy) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app