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Osamu Koyama
Director/Board Member at
ASAHI DIAMOND INDUSTRIAL CO., LTD.
Profile
Osamu Koyama is currently an Independent Outside Director at Asahi Diamond Industrial Co., Ltd., a Managing Director at Keimei Gakuen, and an Auditor at International University of Japan.
Previously, he held positions as a Director & Senior Executive Officer at T&D Holdings, Inc. and Daido Life Insurance Co., as well as President & Representative Director at Mitsui & Co. Global Strategic Studies Institute and Executive Managing Officer at Mitsui & Co., Ltd.
Osamu Koyama active positions
| Companies | Position | Start |
|---|---|---|
| ASAHI DIAMOND INDUSTRIAL CO., LTD. | Director/Board Member | 01/06/2014 |
Keimei Gakuen | Director/Board Member | 01/01/2013 |
International University of Japan
 International University of Japan Other Consumer ServicesConsumer Services Functions as a College/University | Comptroller/Controller/Auditor | 01/04/2017 |
Former positions of Osamu Koyama
| Companies | Position | End |
|---|---|---|
Mitsui & Co. Global Strategic Studies Institute
 Mitsui & Co. Global Strategic Studies Institute Miscellaneous Commercial ServicesCommercial Services Operates research institute | President | - |
Daido Life Insurance Co.
 Daido Life Insurance Co. Life/Health InsuranceFinance Provides enterprise life insurance services | Director/Board Member | - |
| MITSUI & CO., LTD. | Corporate Officer/Principal | - |
| T&D HOLDINGS, INC. | Director/Board Member | - |
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
13
1st degree connections
7
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 7 |
|---|---|
Mitsui & Co., Ltd.
 Mitsui & Co., Ltd. Chemicals: Major DiversifiedProcess Industries Manufactures chemicals and engages in the sale, import, export of industrial materials, raw iron, nonferrous metal, chemical, energy and food | Process Industries |
T&D Holdings, Inc.
 T&D Holdings, Inc. Life/Health InsuranceFinance Provides life insurance services | Finance |
Daido Life Insurance Co.
Daido Life Insurance Co. Life/Health InsuranceFinance Provides enterprise life insurance services | Finance |
Asahi Diamond Industrial Co., Ltd.
 Asahi Diamond Industrial Co., Ltd. Industrial MachineryProducer Manufacturing Manufactures and distributes diamond tools | Producer Manufacturing |
International University of Japan
International University of Japan Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Keimei Gakuen | |
Mitsui & Co. Global Strategic Studies Institute
Mitsui & Co. Global Strategic Studies Institute Miscellaneous Commercial ServicesCommercial Services Operates research institute | Commercial Services |
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