Mikiko Ono

Mikiko Ono became a member of the International Auditing and Assurance Standards Board (IAASB) in January 2025.

She is currently a Managing Director and Head of the Sustainability Office at Mitsubishi UFJ Financial Group (MUFG), where she oversees the strategic integration of sustainability into corporate planning, as well as stakeholder communications and sustainability disclosures, including preparations for reporting under the Sustainability Standards Board of Japan (SSBJ), Japan’s ISSB-aligned sustainability disclosure standards. She also serves as an advisor to the Japan Impact-Driven Financing Initiative (IDFI).

Ms. Ono was previously a Director of Sustainability Disclosure Regulations and Investor & Stakeholder Engagement at Recruit Holdings Co., Ltd. until May 2026. Ms. Ono spearheaded engagement with global investors and sustainability disclosure practices, primarily for capital markets, by integrating financial and non-financial information. She also led a company-wide sustainability disclosure project, collaborating closely with assurance professionals and colleagues across the globe to secure sustainability assurance for consolidated information, aligning with international disclosure standards since she joined the company in 2017.

Prior to her role at Recruit Holdings, Ms. Ono held various roles at major listed telecommunications companies in Japan. Her responsibilities spanned investor relations, international mergers and acquisitions, governance, and monitoring of investees, as well as marketing roles in both Japan and France.

Ms. Ono also served as a Technical Reference Member for the International Sustainability Standards Board (ISSB) of the IFRS Foundation from 2022 to 2023. She is also a Certified Member Analyst of the Securities Analysts Association of Japan (CMA). She earned a Bachelor of Arts degree from the University of Tokyo.