![Tatsuya Otsuka](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>)
Tatsuya Otsuka
Chairman at
EARTH CORPORATION
Net worth: 5 M $ as of 2026-06-29
Profile
Tatsuya Otsuka is currently the Chairman at Earth Corp.
since 2014 and the Director at Earth Chemical (Suzhou) Co., Ltd. since 2005.
Previously, he was the President at ARS Chemical (Thailand) Co., Ltd.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
EARTH CORPORATION 0.71% | 2026-03-23 | 157,400 ( 0.71% ) | 5 M $ | 2026-06-29 |
Tatsuya Otsuka active positions
| Companies | Position | Start |
|---|---|---|
| EARTH CORPORATION | Chairman | 2014-02-28 |
Earth Chemical (Suzhou) Co., Ltd.
 Earth Chemical (Suzhou) Co., Ltd. Household/Personal CareConsumer Non-Durables Manufactures, imports, exports and sells bath additives, detergents and pest repellants | Director/Board Member | 2005-04-30 |
Former positions of Tatsuya Otsuka
| Companies | Position | End |
|---|---|---|
ARS Chemical (Thailand) Co., Ltd. | President | - |
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
17
1st degree connections
3
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 3 |
|---|---|
Earth Corp.
 Earth Corp. Pharmaceuticals: MajorHealth Technology Engages in the manufacture and sale of pharmaceutical products and sanitation products | Health Technology |
ARS Chemical (Thailand) Co., Ltd. | |
Earth Chemical (Suzhou) Co., Ltd.
Earth Chemical (Suzhou) Co., Ltd. Household/Personal CareConsumer Non-Durables Manufactures, imports, exports and sells bath additives, detergents and pest repellants | Consumer Non-Durables |
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