After joining a foreign bank and working at a major auditing firm (in the U.S.), he established Sato Management Law Office. He has served as an external auditor of Mixi Inc. and Ace Insurance Co., Ltd. and was appointed as an Audit & Supervisory Board Member of AI inside Inc in June 2019. Graduated from Waseda University, Faculty of Political Science and Economics. Lawyer and a U.S. Certified Public Accountant (USCPA).