Comparable stake leader
Tam Son I.
SEC ownership of Epsium Enterprise Ltd
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001883437.
Disclosed value leader
Tam Son I.
Comparable rows
8/8
Latest evidence
31 Mar 2026
- Public ticker
- EPSM 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
-
Tam Son I.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
8 of 8
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Tam Son I.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
31 Mar 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001883437
- Issuer location
- Macau, China
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 Epsium Enterprise Ltd (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
Tam Son I.
Disclosed value leader
Tam Son I.
Comparable rows
8/8
Latest evidence
31 Mar 2026
13D/G
3/4/5
13F
Lead comparable stake: 80%
13D/G row: Tam Son I.
Quick read
Tam Son I. leads the comparable SEC ownership view at 80%.
8 of 8 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 Tam Son I.'s linked filing trail.
Comparable ownership
Top 5
Tam Son I.
80%
XTX Topco Ltd
0.13%
Tower Research Capital LLC (TRC)
0.01%
UBS Group AG
0%
MORGAN STANLEY
0%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 8 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Tam Son I. |
13D/G
3/4/5
Son I Tam · CHIEF EXECUTIVE OFFICER, Director, 10%+ Owner
|
80%
|
$139,212,000
10,800,000 shares
|
$0 | 31 Mar 2025 |
| XTX Topco Ltd |
13F
Company
|
0.13%
|
$23,761
16,852 shares
|
— | 31 Mar 2026 |
| Tower Research Capital LLC (TRC) |
13F
Company
|
0.01%
|
$1,858
1,318 shares
|
— | 31 Mar 2026 |
| UBS Group AG |
13F
Company
|
0%
|
$897
636 shares
|
— | 31 Mar 2026 |
| MORGAN STANLEY |
13F
Company
|
0%
|
$354
251 shares
|
— | 31 Mar 2026 |
| Investment Research & Advisory Group, Inc. |
13F
Company
|
0%
|
$127
90 shares
|
— | 31 Mar 2026 |
| BNP PARIBAS FINANCIAL MARKETS |
13F
Company
|
0%
|
$82
58 shares
|
— | 31 Mar 2026 |
| Caitong International Asset Management Co., Ltd |
13F
Company
|
0%
|
$8
6 shares
|
— | 31 Mar 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 03 Aug 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 1-2 of 2 reporting-owner rows connected to Epsium Enterprise Ltd. Open a relationship link for the CIK-to-CIK filing trail.
Rows
2
Largest Forms 3/4/5 holder
Tam Son I.
Net 12M change
$0
Latest report
01 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Tam Son I. | CHIEF EXECUTIVE OFFICER, Director, 10%+ Owner | $14,437,160 | Mixed | 18 Mar 2026 | ||
| Wong Ching Wan | Chief Financial Officer | Mixed | 01 May 2026 |
Recent insider transactions for Epsium Enterprise Ltd
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Tam Son I. | EPSM | Class A Ordinary Share | 0 | 10,774,000 | 18 Mar 2026 | Direct | ||||
| Tam Son I. | EPSM | Class A Ordinary Share | 0 | 14,390 | 18 Mar 2026 | Direct |
* marks a reported price that did not pass the local price check.