As of November 7, 2026, X-Energy, Inc. is a publicly traded company (Nasdaq: XE); its largest reported holder is Kamal Seyed Ghaffarian, with 25% on Schedule 13G of August 14, 2026, then Amazon.com, Inc. (22.9%) (Schedule 13G, August 14, 2026).
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Is X-Energy, Inc. a real, registered company?
- X-Energy, Inc. files with the SEC under CIK 2088896 (its SEC filings).
- Its shares are listed under the ticker XE on Nasdaq (SEC company record).
- Incorporated in Delaware; business address in Wilmington, Delaware, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under X-Energy, Inc. in our court records and SEC 8-K records (as of 2026-11-07).
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Jane Street (filed 2026-09-04).
Who are X-Energy, Inc.'s owners and officers?
X-Energy, Inc.: incorporated in Delaware; business address in Wilmington, Delaware; industry Fabricated Plate Work (Boiler Shops) (Schedule 13G/A, 2026-11-06).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-11-06 | Jane Street Group, LLC | 2.8% |
| Schedule 13G, 2026-09-04 | Jane Street Group, LLC | 5.2% |
| Schedule 13G, 2026-08-14 | Kamal Seyed Ghaffarian | 25% |
| Schedule 13G, 2026-08-12 | Ares Partners Holdco LLC | 12.3% |
| Schedule 13G, 2026-08-06 | Amazon.Com, Inc. | 22.9% |
| Schedule 13G, 2026-07-17 | Segra Capital Management, LLC | 5.3% |
| Schedule 13G, 2026-05-04 | Kenneth Griffin | 6.8% |
Questions about who owns X-Energy, Inc.
Who owns X-Energy, Inc.?
On this page, 5 holders' latest ownership filings report 5% or more of X-Energy, Inc.: Kamal Seyed Ghaffarian (25%, Schedule 13G, filed 2026-08-14), Amazon.Com, Inc. (22.9%, Schedule 13G, filed 2026-08-06), Ares Partners Holdco LLC (12.3%, Schedule 13G, filed 2026-08-12), Kenneth Griffin (6.8%, Schedule 13G, filed 2026-05-04) and Segra Capital Management, LLC (5.3%, Schedule 13G, filed 2026-07-17).
Who are the largest shareholders of X-Energy, Inc.?
By the share each holder's latest filing reports, the largest holders of X-Energy, Inc. on this page are Kamal Seyed Ghaffarian (25%), Amazon.Com, Inc. (22.9%) and Ares Partners Holdco LLC (12.3%).
When did Kamal Seyed Ghaffarian buy into X-Energy, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Kamal Seyed Ghaffarian on this page is the Schedule 13G, filed 2026-08-14, reporting 25%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 7 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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What the Full Report on X-Energy, Inc. covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
16 cited sources found
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Which insiders own X-Energy, Inc. shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- Amazon Com Inc., a 10% owner: 65,836,948 shares, held indirectly (the form names the holder only in its footnotes) (Form 3, 2026-04-24).
- ACIP Investments Pooling LLC - Series 31, a 10% owner: 29,859,375 shares, held indirectly (the form names the holder only in its footnotes), on a joint filing (Form 3, 2026-04-24).
- Ares Partners Holdco LLC, a 10% owner: 29,859,375 shares, held indirectly (the form names the holder only in its footnotes), on a joint filing (Form 3, 2026-04-24).
- Ares X-Energy Holdings LP, a 10% owner: 29,859,375 shares, held indirectly (the form names the holder only in its footnotes), on a joint filing (Form 3, 2026-04-24).
- X-Energy Holdings, LLC, a 10% owner: 6,657,232 shares, 1,240,543 held directly and 5,416,689 indirectly, on a joint filing (Form 4, 2026-11-04).
Shares only: the company's cover page does not give one share count for a single class, so no percentage is worked out.
How much has X-Energy, Inc. raised?
Latest IPO step: X-Energy, Inc. filed its final IPO prospectus, ticker XE (424B4, 2026-04-27).
IPO filings: 424B4, 2026-04-27, S-1/A, 2026-04-20, S-1/A, 2026-04-15, S-1/A, 2026-04-08, S-1/A, 2026-04-03; ticker XE on Nasdaq.
Keep reading
More on X-Energy, Inc. and the records around it.
X-Energy, Inc. elsewhere on the record
- 5%+ stake filings Nov 2026
Companies that share a holder
- Amazon.com, Inc. also filed stake reports on 1 other company: BETA Technologies, Inc. (Feb 2026)
- Kamal Seyed Ghaffarian also filed stake reports on 1 other company: Intuitive Machines, Inc. (Jul 2026)
- Ares Partners Holdco LLC also filed stake reports on 2 other companies: Ares Acquisition Corporation III (Aug 2026), Ares Management Corporation (Aug 2026)
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