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Tokyo, Japan
Yasushi Hamashima is the EY Japan Transactions and Corporate Finance Leader and a partner of EY Strategy and Consulting Co., Ltd..
He began his career in the international division of a predecessor firm of Ernst & Young ShinNihon LLC, where he conducted audits for major trading companies and US-based investment funds.
He later broadened his experience at an investment and consulting firm before returning to the EY network and joining Ernst & Young Transaction Advisory Services (now EY Strategy and Consulting Co., Ltd.).
His international experience includes the period 2011-13 when he was based in the UK, where he worked on financial advisory services for European transactions while seconded to the M&A team at the London branch of a major financial institution.
After returning to Japan in 2013, he led and oversaw financial due diligence services in the Transaction Diligence division, with a focus on private equity funds. He assumed his current role in July 2025.
Building a better working world
“When trust exists between a client business and our firm, it is built through the relationships of the people involved. That’s why I value and stress the importance of nurturing strong personal relationships with my clients and earning my place as their trusted advisor. Like every EY professional, I want to deliver value and prove my commitment to my clients so that I can play my part in building a better working world.