SEC ownership of X-Energy, Inc.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002088896.

Comparable stake leader

Kamal Seyed Ghaffarian

Disclosed value leader

Kamal Seyed Ghaffarian

Comparable rows

50/50

Latest evidence

31 Aug 2026

Top shareholders Insider holders Latest transactions
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
Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
50 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 Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0002088896
Issuer location
Wilmington, DE

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
50/50
Latest evidence
31 Aug 2026
13D/G 3/4/5 13F Lead comparable stake: 25% 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%.

50 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
13D/G 3/4/5
25%
$1,482,222,900
92,871,109 shares
 $0 30 Jun 2026
AMAZON COM INC
13F 13D/G 3/4/5
Company · 10%+ Owner
13F 13D/G 3/4/5
23%
from 13D/G
$1,208,766,365
65,836,948 shares
 — 30 Jun 2026
Ares Partners Holdco LLC
13D/G 3/4/5
Former 10% Owner
13D/G 3/4/5
12%
$610,682,922
38,263,341 shares
 $0 30 Jun 2026
GFNCI LLC
13D/G
Kenneth Griffin
13D/G
6.8%
$576,782,671
18,558,001 shares
 $0 27 Apr 2026
SEGRA CAPITAL MANAGEMENT, LLC
13D/G 13F
Company
13D/G 13F
5.3%
$277,779,988
15,129,629 shares
 $0 09 Jun 2026
JANE STREET GROUP, LLC
13D/G 13F
Company
13D/G 13F
5.2%
$348,269,105
15,322,002 shares
 $0 31 Aug 2026
Laura Garcia
3/4/5
Chief Accounting Officer
3/4/5
0.08%
$7,627,122
240,300 shares
 — 01 Jun 2026
ARES MANAGEMENT LLC
13F
Company
13F
4.7%
$254,186,581
13,844,585 shares
 — 30 Jun 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

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 14 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
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
X-Energy Holdings, LLC 10%+ Owner $180,688,510 Mixed 12 Jun 2026
Kamal Seyed Ghaffarian Director, 10%+ Owner $180,688,510 Mixed 12 Jun 2026
Daniel Andrew Gross Officer $32,539,308 Mixed 01 Jun 2026
Laura Garcia Chief Accounting Officer $7,627,122 Mixed 01 Jun 2026
David B. Kaplan Director Mixed 24 Apr 2026
Allyson Satin Director Mixed 24 Apr 2026
Joel Duling President, TRISO-X Mixed 27 Apr 2026
Edward Sonnenschein Director Mixed 28 Apr 2026
Kathleen W. Hyle Director Mixed 27 Apr 2026
Jeffrey Clay Sell Chief Executive Officer, Director Mixed 24 Apr 2026
Christopher Ginther Director Mixed 28 Apr 2026
Michael J. Wallace Wallace Director Mixed 27 Apr 2026
Ares Partners Holdco LLC Former 10% Owner Mixed 27 Apr 2026
AMAZON COM INC 10%+ Owner Mixed 24 Apr 2026
Ares X-Energy Holdings LP Former 10% Owner Mixed 27 Apr 2026
ACIP Investments Pooling LLC - Series 31 Former 10% Owner Mixed 27 Apr 2026
Gregory James Goff Director Mixed 28 Apr 2026
Dragan Popovic Executive Vice President and Chief of Global Operations. Exhibit 24 - Power of Attorney. Mixed 24 Apr 2026
Steven L. Miller Executive Vice President, Chief Legal and Administration Officer. Exhibit 24 - Power of Attorney. Mixed 24 Apr 2026
Dinkar S. Bhatia Executive Vice President and Chief Commercial Officer. Exhibit 24 - Power of Attorney. Mixed 24 Apr 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.
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