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水島 淳
水島 淳


  • Partner
  • Tokyo

Execution Design provides solutions to tech companies for their business structuring and transaction strategies, and supports them with decision making, negotiation and execution of business transactions.


Atsushi combines his experience as an entrepreneur in Silicon Valley and his broad experience as a business attorney to provide solutions to tech companies and startups, including the design of transaction flows and contractual frameworks in business model creation, fundraising, various types of business collaboration with large corporations, IP strategy building, global business expansion, and strategic M&A and joint venture deals. For larger corporations, he advises on business collaboration with companies in other industry domains and on investments in and business collaborations with startups as well as on their new business model creation.

Awards & Rankings





International Space University, Executive Space Course
Stanford Graduate School of Business (MBA)
The University of Tokyo (LL.B.)

Professional Experience

Lecturer, Keio University Law School 
Outside Director, Macromill, Inc. 
Director, SPACETIDE Foundation 
Committee Member, SPACETIDE Committee 
Mentor, Boomtown Accelerator 
Starting Member of WHILL, Inc. (Silicon Valley-based Startup) 
Lecturer, Seikei University Law School