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Masaaki Arai
Director/Board Member at
OPEN HOUSE GROUP CO., LTD.
Net worth: 2 077 M $ as of 31/05/2026
Profile
Masaaki Arai occupies the position of President & Representative Director at Open House Co., Ltd. and Chairman at Gunma Pro Basketball Commission KK (a subsidiary of Open House Co., Ltd.). He is also on the board of 5 other companies.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
OPEN HOUSE GROUP CO. LTD 32.76% | 31/03/2026 | 38,237,200 ( 32.76% ) | 2 077 M $ | 31/05/2026 |
Masaaki Arai active positions
| Companies | Position | Start |
|---|---|---|
| OPEN HOUSE GROUP CO., LTD. | Director/Board Member | 01/09/1997 |
Gunma Pro Basketball Commission KK
 Gunma Pro Basketball Commission KK Movies/EntertainmentConsumer Services Owns and operates a professional basketball team | Chairman | - |
Former positions of Masaaki Arai
| Companies | Position | End |
|---|---|---|
Hawk ONE Corp.
 Hawk ONE Corp. HomebuildingConsumer Durables Engages in housing construction work, renovation and real estate business | Director/Board Member | - |
Open House Architect Co. Ltd.
 Open House Architect Co. Ltd. HomebuildingConsumer Durables Designs, plans, constructs interior and exterior works for homes and buildings | Director/Board Member | - |
OH Real Estate Management KK | Director/Board Member | - |
Open House Realty & Investments, Inc. | Director/Board Member | - |
IBNet Co. Ltd.
 IBNet Co. Ltd. Finance/Rental/LeasingFinance Provides home loan and financing services | Director/Board Member | - |
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
8
1st degree connections
8
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 8 |
|---|---|
IBNet Co. Ltd.
IBNet Co. Ltd. Finance/Rental/LeasingFinance Provides home loan and financing services | Finance |
Open House Group Co., Ltd.
 Open House Group Co., Ltd. HomebuildingConsumer Durables Constructs and sells single-family houses | Consumer Durables |
Open House Development Co., Ltd.
 Open House Development Co., Ltd. Real Estate DevelopmentFinance Provides real estate services | Finance |
Open House Architect Co. Ltd.
Open House Architect Co. Ltd. HomebuildingConsumer Durables Designs, plans, constructs interior and exterior works for homes and buildings | Consumer Durables |
Hawk ONE Corp.
Hawk ONE Corp. HomebuildingConsumer Durables Engages in housing construction work, renovation and real estate business | Consumer Durables |
Open House Realty & Investments, Inc. | |
OH Real Estate Management KK | |
Gunma Pro Basketball Commission KK
Gunma Pro Basketball Commission KK Movies/EntertainmentConsumer Services Owns and operates a professional basketball team | Consumer Services |
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