Sumco Management
Management criteria checks 1/4
Sumco's CEO is Jiro Ryuta, appointed in Mar 2026, has a tenure of less than a year. directly owns 0.004% of the company’s shares, worth $286.63K. The average tenure of the management team and the board of directors is 3.7 years and 2.5 years respectively.
Key information
Jiro Ryuta
Chief executive officer
n/a
Total compensation
| CEO salary percentage | n/a |
| CEO tenure | less than a year |
| CEO ownership | 0.004% |
| Management average tenure | 3.7yrs |
| Board average tenure | 2.5yrs |
Recent management updates
Recent updates
CEO
Jiro Ryuta (66 yo)
Mr. Jiro Ryuta serves as a Director at Formosa Sumco Technology Corporation since April 18, 2022. He serves as President & Chairman of the Board of Director at Formosa Sumco Technology Corporation since Ma...
Leadership Team
| Name | Position | Tenure | Compensation | Ownership |
|---|---|---|---|---|
| President & Chairman of the Board of Director | less than a year | no data | 0.0043% $ 286.6k | |
| CFO, Executive VP & Representative Director | no data | no data | 0.0021% $ 140.6k | |
| GM of Accounting Department | no data | no data | no data | |
| Sr. Managing Exec. Off. of AI Promotion Headquarters | 4.7yrs | no data | 0.0042% $ 280.6k | |
| VP, GM of Construction Division | 5.7yrs | no data | no data | |
| Managing Executive Officer | 3.7yrs | no data | no data | |
| Managing Executive Officer & Director of Marketing Technology | 3.7yrs | no data | no data | |
| Managing Executive Officer | 3.7yrs | no data | no data | |
| Managing Executive Officer | 2.7yrs | no data | no data | |
| Managing Executive Officer | less than a year | no data | no data | |
| Managing Executive Officer | no data | no data | no data | |
| Managing Executive Officer | less than a year | no data | no data |
Experienced Management: SUMC.F's management team is considered experienced (3.7 years average tenure).
Board Members
| Name | Position | Tenure | Compensation | Ownership |
|---|---|---|---|---|
| President & Chairman of the Board of Director | 4.5yrs | no data | 0.0043% $ 286.6k | |
| CFO, Executive VP & Representative Director | 2.5yrs | no data | 0.0021% $ 140.6k | |
| GM of Accounting Department | less than a year | no data | no data | |
| Sr. Managing Exec. Off. of AI Promotion Headquarters | 2.5yrs | no data | 0.0042% $ 280.6k | |
| VP, GM of Construction Division | less than a year | no data | no data | |
| Managing Executive Officer | less than a year | no data | no data | |
| Advisor & Director | 16.4yrs | JP¥130.00m | 0.0091% $ 608.6k | |
| Independent Outside Director | 10.5yrs | no data | 0.00058% $ 38.7k | |
| Independent Outside Director | 2.5yrs | no data | no data | |
| Independent Outside Director | 4.5yrs | no data | 0.00074% $ 49.3k | |
| Outside Independent Director | less than a year | no data | no data | |
| Independent Outside Director | 1.5yrs | no data | no data |
Experienced Board: SUMC.F's board of directors are not considered experienced ( 2.5 years average tenure), which suggests a new board.
Company Analysis and Financial Data Status
| Data | Last Updated (UTC time) |
|---|---|
| Company Analysis | 2026/09/16 16:38 |
| End of Day Share Price | 2026/09/16 00:00 |
| Earnings | 2026/06/30 |
| Annual Earnings | 2025/12/31 |
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 |
| |
| Analyst Consensus Estimates | +3 years |
|
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| Market Prices | 30 years |
| |
| Ownership | 10 years |
| |
| Management | 10 years |
| |
| 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 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
Sumco Corporation is covered by 26 analysts. 16 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.
| Analyst | Institution |
|---|---|
| Mikiya Yamada | Barclays |
| Hao Dai | Bernstein |
| Stacy Rasgon | Bernstein |