Photographic portrait of Masami Koike

Masami Koike

EY Japan Advisory Internal Audit Domain Leader

Leader in supporting clients through business risk mitigation, control and governance enhancement. Balanced view coming from advisory and external audit background. Saxophone player.

Areas of focus Advisory
Office Tokyo, JP

An experienced professional with a background in both external audit and risk advisory, Masami is the Internal Audit domain leader for EY Japan Advisory services.

His group supports clients with business risk mitigation, control and governance enhancement. Prior to his current role, he worked as an audit engagement partner and provided services related to internal controls for US listed companies. 

Before joining EY in 2003, he worked at a large accounting firm primarily focusing on external audits in Japan, and in the US. 

How Masami is building a better working world

“In my work with clients, I focus on how they could achieve their long-term objectives beyond their direct requests. Our goal is to always come up with a better solution for the clients and our working world. Risk advisory services are not only for protecting the business in a reactive way, but also for proactive and effective management.”


Contact Masami