![Ryoji Koshimizu](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Net worth: 3 M $ as of 2026-05-30
Ryoji Koshimizu has held leadership roles at multiple firms.
Since 1980, associated with System Support Holdings, Inc., serving as President & Representative Director from 1994.
Chairman of eNet Solutions KK since 2000.
Chairman of STS-MEDIC, Inc. since 2009.
Director of STS Innovation, Inc. since 2013.
Chairman of ACROSS Solutions, Inc. since 2015.
Director of STS Innovation Canada, Inc. since 2016.
Current jobs include Chairman at ACROSS Solutions, Inc., Chairman at eNet Solutions KK, Chairman at STS-MEDIC, Inc., President & Representative Director at System Support Holdings, Inc., Director at STS Innovation, Inc., and Director at STS Innovation Canada, Inc.
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2025-12-30 | 556,000 ( 2.67% ) | 3 M $ | 2026-05-30 |
| Companies | Position | Start |
|---|---|---|
| SYSTEM SUPPORT HOLDINGS INC. | President | 1994-08-31 |
eNet Solutions KK
 eNet Solutions KK Data Processing ServicesTechnology Services Provides data center, cloud and system development services | Chairman | 2000-11-30 |
STS-MEDIC, Inc.
 STS-MEDIC, Inc. Packaged SoftwareTechnology Services Develops and wholesales hardware and software products for medical image filing system | Chairman | 2009-02-28 |
STS Innovation, Inc.
 STS Innovation, Inc. Miscellaneous Commercial ServicesCommercial Services Provides business process outsourcing management, human resources consulting and media marketing services | Director/Board Member | 2013-06-30 |
STS Innovation Canada, Inc.
 STS Innovation Canada, Inc. Personnel ServicesCommercial Services Provides recruiting, accounting, payroll and information technology consulting services | Director/Board Member | 2015-12-31 |
ACROSS Solutions, Inc.
 ACROSS Solutions, Inc. Packaged SoftwareTechnology Services Develops and sells electronic ordering systems | Chairman | 2015-08-31 |
Active
Inactive
Listed companies
Private companies
| Private companies | 6 |
|---|---|
System Support, Inc.
 System Support, Inc. Packaged SoftwareTechnology Services Provides system consulting services | Technology Services |
ACROSS Solutions, Inc.
ACROSS Solutions, Inc. Packaged SoftwareTechnology Services Develops and sells electronic ordering systems | Technology Services |
eNet Solutions KK
eNet Solutions KK Data Processing ServicesTechnology Services Provides data center, cloud and system development services | Technology Services |
STS-MEDIC, Inc.
STS-MEDIC, Inc. Packaged SoftwareTechnology Services Develops and wholesales hardware and software products for medical image filing system | Technology Services |
STS Innovation, Inc.
STS Innovation, Inc. Miscellaneous Commercial ServicesCommercial Services Provides business process outsourcing management, human resources consulting and media marketing services | Commercial Services |
STS Innovation Canada, Inc.
STS Innovation Canada, Inc. Personnel ServicesCommercial Services Provides recruiting, accounting, payroll and information technology consulting services | Commercial Services |
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