Hiroichi Yokoyama
Founder at PROTO CORPORATION
Net worth: 161 M $ as of 2024-03-30
Profile
Hiroichi Yokoyama is the founder of Proto Corp., which was founded in 1977.
He holds the title of Chairman at Proto Corp.
Mr. Yokoyama's current job(s) include Chairman at Autoway Co., Ltd.
since 2020 and Chairman at Proto Data Center KK since 2007.
Mr. Yokoyama's former job(s) include Chairman at MARS FLAG Corp., Chairman at System-One Corp., Chairman & President at Repair Tech, Inc., Chairman at Goo Auto Inc., and Chairman at Proto (Shanghai) Advertisement Co., Ltd.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
PROTO CORP.
34.61% | 2023-09-29 | 14,512,000 ( 34.61% ) | 137 M $ | 2024-03-30 |
TEAR CORP.
34.62% | 2023-09-29 | 7,792,000 ( 34.62% ) | 24 M $ | 2024-03-30 |
Hiroichi Yokoyama active positions
| Companies | Position | Start |
|---|---|---|
| PROTO CORPORATION | Founder | 1977-09-30 |
| Proto Data Center KK | Chairman | 2007-03-31 |
Autoway Co., Ltd.
 Autoway Co., Ltd. Specialty StoresRetail Trade Part of Proto Corp., Autoway Co., Ltd. is a Japanese company that specializes in importing summer tires, studless tires, and wheels directly from manufacturers around the world. The private company is based in Miyako-gun, Japan. With cumulative sales of 32 million units, Autoway has become a leading provider in the industry, always having 800,000 units in stock. For any inquiries, customers can contact the call center for assistance. Autoway Co. was acquired by Proto Corp. from Mitsuya Shoji KK on April 01, 2013. | Chairman | 2020-03-31 |
Former positions of Hiroichi Yokoyama
| Companies | Position | End |
|---|---|---|
| Proto (Shanghai) Advertisement Co., Ltd. | Chairman | - |
MARS FLAG Corp.
 MARS FLAG Corp. Information Technology ServicesTechnology Services MARS FLAG Corp. is a holding company that develops web search engine solutions. It provides web services that can be implemented as an application service provider. The firm's services encompass website search service, website quality management service, and PDF viewer service. The company was founded by Shinya Takei in October 1998 and is headquartered in Tokyo, Japan. | Chairman | - |
System-One Corp.
 System-One Corp. Packaged SoftwareTechnology Services Part of Proto Corp., System-One Corp. develops and wholesales software. The private company is based in Sendai, Japan. System-One was acquired by Proto Corp. on October 01, 2009 for $3.27 million. | Chairman | - |
| Repair Tech, Inc. | Chairman | - |
| Goo Auto Inc. | Chairman | - |
Experiences
Positions held
Connections
1st degree connections
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Listed companies | 1 |
|---|---|
| PROTO CORPORATION | Technology Services |
| Private companies | 7 |
|---|---|
MARS FLAG Corp.
MARS FLAG Corp. Information Technology ServicesTechnology Services MARS FLAG Corp. is a holding company that develops web search engine solutions. It provides web services that can be implemented as an application service provider. The firm's services encompass website search service, website quality management service, and PDF viewer service. The company was founded by Shinya Takei in October 1998 and is headquartered in Tokyo, Japan. | Technology Services |
System-One Corp.
System-One Corp. Packaged SoftwareTechnology Services Part of Proto Corp., System-One Corp. develops and wholesales software. The private company is based in Sendai, Japan. System-One was acquired by Proto Corp. on October 01, 2009 for $3.27 million. | Technology Services |
Autoway Co., Ltd.
Autoway Co., Ltd. Specialty StoresRetail Trade Part of Proto Corp., Autoway Co., Ltd. is a Japanese company that specializes in importing summer tires, studless tires, and wheels directly from manufacturers around the world. The private company is based in Miyako-gun, Japan. With cumulative sales of 32 million units, Autoway has become a leading provider in the industry, always having 800,000 units in stock. For any inquiries, customers can contact the call center for assistance. Autoway Co. was acquired by Proto Corp. from Mitsuya Shoji KK on April 01, 2013. | Retail Trade |
| Proto Data Center KK | |
| Repair Tech, Inc. | |
| Goo Auto Inc. | |
| Proto (Shanghai) Advertisement Co., Ltd. |
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