American International Group, Inc. (AIG), a global insurer and reinsurer, has appointed Koki Umeda as Vice Chairman of AIG Japan, succeeding Hirofumi Shimoyama, who will transition to the role of Senior Advisor, effective July 1st, 2026.
Umeda has over three decades of global insurance experience and a strong track record of leadership across Japan, the Americas, and Europe.
James Nash of AIG Japan commented on the appointment, “Welcoming Koki Umeda as Vice Chairman while continuing to draw on Hirofumi Shimoyama’s leadership and partnership. I’m confident his perspective will help drive our next phase of growth.
“I’ve had the privilege of working with Shimoyama-san over many years, and I’m deeply grateful for his deep insights, partnership, leadership and passion for delivering for our clients and agents.”
He continued, “Since joining AIG, he has been instrumental in transforming our business and building a strong foundation for the future, and I am incredibly grateful for the support he has given me personally and to AIG Japan.
“I look forward to working with both Umeda-san and Shimoyama-san as we look for ways to enhance the value we can bring to our clients, agents and distribution partners across Japan.”
