Security key
G81237128
J-Star Holding Co., Ltd. - ORD SHS CLASS A (YMAT)
CUSIP: G81237128
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / ORD SHS CLASS A
- Total 13F shares
- 36,144
- Total 13F value
- $10,160
- Share change
- -13,857
- SEC-reported price per share
- $0.28
- Number of holders
- 2
- Value change
- -$13,529
- Number of buys
- 2
- Number of sells
- 3
Report period
Q1 2026
Institutions
2
Top holders
2
YMAT full security history
Ownership snapshot
Full 13F holder table
Previous quarter: Q4 2025
J-Star Holding Co., Ltd. SEC filings
J-Star Holding Co., Ltd. company facts
Broader feeds
Reporting periods
Holder history for CUSIP G81237128
Recent filing periods:
Ownership snapshot
Top reported holders of YMAT - J-Star Holding Co., Ltd. - ORD SHS CLASS A (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
Chiang Jing-Bin
Disclosed value leader
Ching-Chou Huang
Comparable rows
0/10
Latest evidence
18 Mar 2026
3/4/5
13F
Highest disclosed value: $117,600
10 rows are not safely comparable across share classes.
Showing 1-6 of 10 holder rows.
Quick read
Ching-Chou Huang has the largest disclosed position value at $117.6K.
0 of 10 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 Ching-Chou Huang's linked filing trail.
Disclosed position value
Top 5
Ching-Chou Huang
$117.6K
Ping-Hong Lin
$117.6K
Shen-Huei Wang
$117.6K
Ting-Pang Sung
$117.6K
Sam van
$83.9K
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 10 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Chiang Jing-Bin |
3/4/5
Director, Chairman, 10%+ Owner
|
—
class O/S missing
|
—
6,097,183 shares
|
— | 18 Mar 2026 |
| New Moon Corp |
3/4/5
10%+ Owner
|
—
class O/S missing
|
—
4,888,092 shares
|
— | 18 Mar 2026 |
| Ching-Chou Huang |
3/4/5
Director
|
—
class O/S missing
|
$117,600
240,000 shares
|
— | 18 Mar 2026 |
| Ping-Hong Lin |
3/4/5
Director
|
—
class O/S missing
|
$117,600
240,000 shares
|
— | 18 Mar 2026 |
| Shen-Huei Wang |
3/4/5
Director
|
—
class O/S missing
|
$117,600
240,000 shares
|
— | 18 Mar 2026 |
| Ting-Pang Sung |
3/4/5
Director
|
—
class O/S missing
|
$117,600
240,000 shares
|
— | 18 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.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
2
Shares
36,144
Rows available
2
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
3
Q1 2026 holders
2
Holder diff
-1
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend