Koji Tsunekane

Founder at EBASE CO.,LTD.

Net worth: 41 M $ as of 2026-05-30

69 year

Technology Services

Consumer Services

Profile

Koji Tsunekane is the founder of eBASE Co., Ltd., founded in 2001, and holds the title of Chairman since 2020.
Mr. Tsunekane currently works at eBASE-PLUS Co. Ltd. as President & Representative Director since 2010.
Mr. Tsunekane completed undergraduate education at Keio University in 1980.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
EBASE CO., LTD. 35.27%	2025-09-29	16,636,570 ( 35.27% )	41 M $	2026-05-30

Koji Tsunekane active positions

Companies	Position	Start
EBASE CO.,LTD.	Founder	2001-09-30
eBASE-PLUS Co. Ltd. eBASE-PLUS Co. Ltd. Packaged SoftwareTechnology Services Develops software	President	2010-10-31

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Linked companies

Private companies	3
Keio University Keio University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
eBASE Co., Ltd. eBASE Co., Ltd. Packaged SoftwareTechnology Services Engages in the planning, development, sale, and maintenance of content management software	Technology Services
eBASE-PLUS Co. Ltd. eBASE-PLUS Co. Ltd. Packaged SoftwareTechnology Services Develops software	Technology Services