X-Energy, Inc. has 6 Schedule 13D or 13G filings on record since 2026-05-04. 6 holders' latest filing reports 5% or more of class a common stock, par value $0.0001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Kamal Seyed Ghaffarian | 25% | 92,871,109 | SCHEDULE 13G, 2026-08-14 | 2026-06-30 |
| Amazon.com, Inc. | 22.9% | 65,836,948 | SCHEDULE 13G, 2026-08-06 | 2026-06-30 |
| Ares Partners Holdco LLC | 12.3% | 38,263,341 | SCHEDULE 13G, 2026-08-12 | 2026-06-30 |
| Kenneth Griffin | 6.8% | 18,558,001 | SCHEDULE 13G, 2026-05-04 | 2026-04-27 |
| Segra Capital Management, LLC | 5.3% | 15,129,629 | SCHEDULE 13G, 2026-07-17 | 2026-06-09 |
| Jane Street Group, LLC | 5.2% | 15,322,002 | SCHEDULE 13G, 2026-09-04 | 2026-08-31 |
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-05-04 | Kenneth Griffin | 6.8% | SCHEDULE 13G |
| 2026-07-17 | Segra Capital Management, LLC | 5.3% | SCHEDULE 13G |
| 2026-08-06 | Amazon.com, Inc. | 22.9% | SCHEDULE 13G |
| 2026-08-12 | Ares Partners Holdco LLC | 12.3% | SCHEDULE 13G |
| 2026-08-14 | Kamal Seyed Ghaffarian | 25% | SCHEDULE 13G |
| 2026-09-04 | Jane Street Group, LLC | 5.2% | SCHEDULE 13G |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.