J-Star Holding Management
Management criteria checks 1/4
We currently do not have sufficient information about the CEO.
Key information
Jonathan Chiang
Chief executive officer
n/a
Total compensation
| CEO salary percentage | n/a |
| CEO tenure | less than a year |
| CEO ownership | 35.4% |
| Management average tenure | no data |
| Board average tenure | 7yrs |
CEO
Jonathan Chiang (57 yo)
Mr. Jing-Bin Chiang, also known as Jonathan, had been Chief Executive Officer of J-Star Holding Co., Ltd. until October 1, 2025. He serves as Director of J-Star Holding Co., Ltd.since May 2016 and as Chai...
Board Members
| Name | Position | Tenure | Compensation | Ownership |
|---|---|---|---|---|
| CEO & Chairman of the Board | 9.9yrs | no data | 35.45% $ 1.9m | |
| Independent Director | 9.2yrs | no data | 1.4% $ 75.4k | |
| Advisor to Board & Management Team | less than a year | no data | 0.99% $ 53.8k | |
| Director | 4.8yrs | no data | 1.4% $ 75.4k | |
| Independent Director | 9.2yrs | no data | 1.4% $ 75.4k | |
| Independent Director | 4.8yrs | no data | 1.4% $ 75.4k |
Experienced Board: YMAT's board of directors are considered experienced (7 years average tenure).
Company Analysis and Financial Data Status
| Data | Last Updated (UTC time) |
|---|---|
| Company Analysis | 2026/04/10 02:04 |
| End of Day Share Price | 2026/04/10 00:00 |
| Earnings | 2025/06/30 |
| Annual Earnings | 2024/12/31 |
Data Sources
The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.
| Package | Data | Timeframe | Example US Source * |
|---|---|---|---|
| Company Financials | 10 years |
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| Analyst Consensus Estimates | +3 years |
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| Market Prices | 30 years |
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| Ownership | 10 years |
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| Management | 10 years |
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| Key Developments | 10 years |
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* Example for US securities, for non-US equivalent regulatory forms and sources are used.
Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.
Analysis Model and Snowflake
Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.
Learn about the world class team who designed and built the Simply Wall St analysis model.
Industry and Sector Metrics
Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.
Analyst Sources
J-Star Holding Co., Ltd. is covered by 0 analysts. 0 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.