Comparable stake leader
Jiang Chuanbo
SEC ownership of STAK Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002002453.
Disclosed value leader
JANE STREET GROUP, LLC
Comparable rows
0/7
Latest evidence
31 Mar 2026
- Public ticker
- STAK on Nasdaq
- Parsed ownership sources
- 3/4/5 and 13F
- Largest SEC-reported holder
- Jiang Chuanbo
- Latest parsed ownership date
- 31 Mar 2026
- Issuer CIK
- 0002002453
- Issuer location
- Changzhoucity,Jiangsu Province, China
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
1 signal
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of STAK 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
Jiang Chuanbo
Disclosed value leader
JANE STREET GROUP, LLC
Comparable rows
0/7
Latest evidence
31 Mar 2026
3/4/5
13F
Highest disclosed value: $54,403
7 rows are not safely comparable across share classes.
Quick read
JANE STREET GROUP, LLC has the largest disclosed position value at $54.4K.
0 of 7 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 JANE STREET GROUP, LLC's linked filing trail.
Disclosed position value
Top 5
JANE STREET GROUP, LLC
$54.4K
MORGAN STANLEY
$50K
UBS Group AG
$8.1K
Tower Research Capital LLC (TRC)
$2.9K
WELLS FARGO & COMPANY/MN
$2.5K
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-7 of 7 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Jiang Chuanbo |
3/4/5
Chief Executive Officer, Director, 10%+ Owner
|
—
class O/S missing
|
—
7,700,000 shares
|
— | 17 Mar 2026 |
| Gao Huyun |
3/4/5
Chief Operating Officer, 10%+ Owner
|
—
class O/S missing
|
—
1,500,000 shares
|
— | 17 Mar 2026 |
| JANE STREET GROUP, LLC |
13F
Company
|
—
class O/S missing
|
$54,403
54,403 shares
|
— | 31 Mar 2026 |
| MORGAN STANLEY |
13F
Company
|
—
class O/S missing
|
$50,000
50,000 shares
|
— | 31 Mar 2026 |
| UBS Group AG |
13F
Company
|
—
class O/S missing
|
$8,089
8,089 shares
|
— | 31 Mar 2026 |
| Tower Research Capital LLC (TRC) |
13F
Company
|
—
class O/S missing
|
$2,900
2,900 shares
|
— | 31 Mar 2026 |
| WELLS FARGO & COMPANY/MN |
13F
Company
|
—
class O/S missing
|
$2,500
2,500 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 06 Jun 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 1-7 of 7 reporting-owner rows connected to STAK Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
7
Largest Forms 3/4/5 holder
Li Diana
Net 12M change
$0
Latest report
17 Mar 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Li Diana | Chief Financial Officer | Mixed | 17 Mar 2026 | |||
| Hu Yiqin | Director | Mixed | 17 Mar 2026 | |||
| Beekmans Johannes Antonius Gerardus | Director | Mixed | 17 Mar 2026 | |||
| Jiang Chuanbo | Chief Executive Officer, Director, 10%+ Owner | Mixed | 17 Mar 2026 | |||
| Xu Zhaohui Randall | Director | Mixed | 17 Mar 2026 | |||
| Xu Ke Dennis | Chief Technology Officer | Mixed | 17 Mar 2026 | |||
| Gao Huyun | Chief Operating Officer, 10%+ Owner | Mixed | 17 Mar 2026 |
Recent insider transactions for STAK 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Gao Huyun | STAK | Class B Ordinary Shares | 0 | 1,500,000 | 17 Mar 2026 | By MT. Yang Holding Ltd. | ||||
| Jiang Chuanbo | STAK | Class B Ordinary Shares | 0 | 7,700,000 | 17 Mar 2026 | By Lanying Capital Ltd. |
* marks a reported price that did not pass the local price check.