Board of Directors

Robert Wagner has served as Chief Business Officer and Director of Koei Group Co., Ltd. since February 2025. He is also the President & CEO of Koei US, Inc., a subsidiary of Koei Group, where he oversees all aspects of the company’s operations. With more than 20 years of experience as an engineer, primarily in the oil and gas industry, Mr. Wagner brings deep technical expertise and leadership to the organization. He earned a Bachelor of Science in Electrical Engineering from the University of Washington in 2003 and a Master of Science in Electrical Engineering from the same institution in 2013.

Ryuma Iwamoto has served as the Chief Operating Officer and a director of Koei Group Co., Ltd. since February 2025. From August 2024 to the present, he has served as a director of the Company’s wholly owned subsidiary, KOEI JAPAN CO., LTD., previously known as Koei Shoji Co., Ltd. From February 2022 to the present, he has served as the Chief Executive Officer of the wholly owned subsidiary, KOEISING PTE. LTD. From June 2018 to July 2023, he worked in a sales manager position at KOEI JAPAN CO., LTD. Ryuma Iwamoto received a B.A. in Child Development Science from Next Generation Education, International Pacific University in 2016.

Maki Wagner has served as Chief Communications Officer and Director of Koei Group Co., Ltd. since February 2025. She currently leads investor relations for Koei Japan Co., Ltd. and also serves as Chief Communications Officer for Koei US, Inc. In addition, Mrs. Wagner has held the role of Executive Director at the Naoko Mitsui Shirane Foundation since April 2023. She earned a Bachelor’s degree in Education from Aoyama Gakuin University in 2003.