Comparable stake leader
Kamal Seyed Ghaffarian
SEC ownership of X-Energy, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002088896.
Disclosed value leader
Kamal Seyed Ghaffarian
Comparable rows
6/50
Latest evidence
31 Aug 2026
- Public ticker
- XE on Nasdaq
- Parsed ownership sources
-
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Kamal Seyed Ghaffarian
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
6 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Kamal Seyed Ghaffarian
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
31 Aug 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0002088896
- Issuer location
- Wilmington, DE
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of X-Energy, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Kamal Seyed Ghaffarian
Disclosed value leader
Kamal Seyed Ghaffarian
Comparable rows
6/50
Latest evidence
31 Aug 2026
13D/G
3/4/5
13F
Lead comparable stake: 25%
44 rows are not safely comparable across share classes.
13D/G row: Kamal Seyed Ghaffarian
Showing 1-8 of 50 holder rows.
Quick read
Kamal Seyed Ghaffarian leads the comparable SEC ownership view at 25%.
6 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Kamal Seyed Ghaffarian's linked filing trail.
Comparable ownership
Top 5
Kamal Seyed Ghaffarian
25%
AMAZON COM INC
23%
Ares Partners Holdco LLC
12%
GFNCI LLC
6.8%
SEGRA CAPITAL MANAGEMENT, LLC
5.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Kamal Seyed Ghaffarian |
13D/G
3/4/5
Director, 10%+ Owner
|
25%
Reported 13D/G
· 30 Jun 2026
|
$1,482,222,900
92,871,109 shares
|
$0 | 30 Jun 2026 |
| AMAZON COM INC |
13F
13D/G
3/4/5
Company · 10%+ Owner
|
23%
Reported 13D/G
· 30 Jun 2026
|
$1,208,766,365
65,836,948 shares
|
— | 30 Jun 2026 |
| Ares Partners Holdco LLC |
13D/G
3/4/5
Former 10% Owner
|
12%
Reported 13D/G
· 30 Jun 2026
|
$610,682,922
38,263,341 shares
|
$0 | 30 Jun 2026 |
| GFNCI LLC |
13D/G
Kenneth Griffin
|
6.8%
Reported 13D/G
· 27 Apr 2026
|
$576,782,671
18,558,001 shares
|
$0 | 27 Apr 2026 |
| SEGRA CAPITAL MANAGEMENT, LLC |
13D/G
13F
Company
|
5.3%
Reported 13D/G
· 09 Jun 2026
|
$277,779,988
15,129,629 shares
|
$0 | 09 Jun 2026 |
| JANE STREET GROUP, LLC |
13D/G
13F
Company
|
5.2%
Reported 13D/G
· 31 Aug 2026
|
$348,269,105
15,322,002 shares
|
$0 | 31 Aug 2026 |
| X-Energy Holdings, LLC |
3/4/5
10%+ Owner
|
—
mixed-class rows
|
$180,688,510
90,841,191 shares
mixed-class rows
|
— | 12 Jun 2026 |
| ACIP Investments Pooling LLC - Series 31 |
3/4/5
Former 10% Owner
|
—
mixed-class rows
|
—
29,859,375 shares
mixed-class rows
|
— | 27 Apr 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
No eligible buy or sell activity is available for this window. No eligible Buy or Sell transactions are available in this dataset since 29 Oct 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 20 reporting-owner rows connected to X-Energy, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
20
Largest Forms 3/4/5 holder
X-Energy Holdings, LLC
Net 12M change
$0
Latest report
12 Jun 2026
Recent insider transactions for X-Energy, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Ghaffarian Kamal Seyed | XE | Class A Common Stock | Other | 5.56% | 279,438 | 5,308,515 | 12 Jun 2026 | See footnote | ||
| Kamal Seyed Ghaffarian | XE | Class A Common Stock | Other | 5.56% | 279,438 | 5,308,515 | 12 Jun 2026 | See footnote | ||
| Laura Garcia | XE | Class A Common Stock | Award | 22.1% | 43,478 | 240,300 | 01 Jun 2026 | Direct | ||
| Daniel Andrew Gross | XE | Class A Common Stock | Award | 31.7% | 246,665 | 1,025,183 | 01 Jun 2026 | Direct | ||
| Daniel Andrew Gross | XE | Stock Option | Award | 26.1% | 332,615 | 1,605,770 | 01 Jun 2026 | Direct | ||
| Ghaffarian Kamal Seyed | XE | Class A Common Stock | Award | 0.53% | 6,522 | 1,240,543 | 28 Apr 2026 | Direct | ||
| Kamal Seyed Ghaffarian | XE | Class A Common Stock | Award | 0.53% | 6,522 | 1,240,543 | 28 Apr 2026 | Direct | ||
| Michael J. Wallace Wallace | XE | Class A Common Stock | Award | 9.17% | 6,522 | 77,683 | 28 Apr 2026 | Direct | ||
| Christopher Ginther | XE | Class A Common Stock | Award | 5.54% | 6,522 | 124,162 | 28 Apr 2026 | Direct | ||
| Gregory James Goff | XE | Class A Common Stock | Award | 5.54% | 6,522 | 124,162 | 28 Apr 2026 | Direct | ||
| Kathleen W. Hyle | XE | Class A Common Stock | Award | 5.11% | 6,522 | 134,162 | 28 Apr 2026 | Direct | ||
| Edward Sonnenschein | XE | Class A Common Stock | Award | 0.8% | 6,522 | 820,114 | 28 Apr 2026 | Direct | ||
| Michael J. Wallace Wallace | XE | Class A Common Stock | Purchase | 1.43% | 1,000 | 71,161 | 27 Apr 2026 | Direct | ||
| Kathleen W. Hyle | XE | Class A Common Stock | Purchase | 8.5% | 10,000 | 127,640 | 27 Apr 2026 | Direct | ||
| Joel Duling | XE | Class A Common Stock | Purchase | 0.02% | 100 | 552,699 | 27 Apr 2026 | Direct | ||
| Laura Garcia | XE | Class A Common Stock | Purchase | 0.61% | 1,200 | 196,822 | 27 Apr 2026 | Direct |
* marks a reported price that did not pass the local price check.