Sumitomo Corporation announced personnel changes involving Board Members, Executive Officers, and other positions resolved at the meeting of the Board of Directors held on January 29, 2026. The following changes are effective as of April 1, 2026: Shimpei Nitta will move from his current role as General Manager for Africa, Deputy CEO of Sumitomo Corporation Middle East & Africa Group, and General Manager of Sumitomo Corporation Africa Pty Ltd. to the new corporate title of Executive Officer while continuing in those same Africa/Middle East & Africa assignments; Shinichiro Wakasugi will move from current Group CFO, Automotive Group to the new corporate title of Executive Officer, Group CFO, Automotive Group; Atsuki Kawakami will move from current General Manager, Energy Business Division in Sumitomo Corporation of Americas Group; Sumitomo Corporation of Americas; General Manager, Houston Office to the new corporate title of Executive Officer; Jun Minase will move from current General Manager, Overseas Energy Solution Strategic Business Unit; Deputy General Manager, Energy Innovation Initiative Strategic Business Unit to the new corporate title of Executive Officer while continuing those same assignments; Yoshiyasu Fuse will move from current Head of Accounting Controlling Dept. to the new corporate title of Executive Officer, Head of Accounting Controlling Dept.; Daisuke Kajikawa will move from current General Manager, Mobility Services Strategic Business Unit; Head of Auto Financing Business Unit to the new corporate title of Executive Officer and Hiroshi Kato will move from current Head of Finance Dept.

to the new corporate title of Executive Officer, Head of Finance Dept. In addition, Sumitomo Corporation will implement seven promotions of existing Executive Officers (effective April 1): Katsuya Inubushi will be promoted from current Senior Managing Executive Officer, Group CEO, Steel Group to new Executive Vice President, Group CEO, Steel Group; Hajime Mori will be promoted from current Managing Executive Officer, Group CEO, Energy Transformation Business Group to new Senior Managing Executive Officer, Group CEO, Energy Transformation Business Group; Tadayuki Ueno will be promoted from current Managing Executive Officer (Communication Services/Media & Digital-related assignment), JCOM Co. Ltd. to new Senior Managing Executive Officer (Communication Services Group; Media & Digital Group-related assignment), JCOM Co.

Ltd.; Yasuhiro Yoshida will be promoted from current Managing Executive Officer, Chief Administration Officer and Chief Compliance Officer to new Senior Managing Executive Officer, Chief Administration Officer and Chief Compliance Officer; Takao Kusaka will be promoted from current Managing Executive Officer, Group CEO, Automotive Group; Group CEO, Transportation & Construction Systems Group to new Senior Managing Executive Officer, Group CEO, Automotive Group; Group CEO, Transportation & Construction Systems Group; Seiji Kitajima will be promoted from current Executive Officer, General Manager, Energy Innovation Initiative Strategic Business Unit to new Managing Executive Officer; and Tatsushi Tatsumi will be promoted from current Executive Officer, Group CEO, Digital AI Group; Chief Digital Officer and Chief Information Officer to new Managing Executive Officer, Group CEO, Digital AI Group; Chief Digital Officer and Chief Information Officer.Five Executive Officers will retire from their Executive Officer positions effective March 31, 2026: Takayuki Seishima will change from current Representative Director; Executive Vice President (Corporate Group); to new Director; Mitsuhiro Takeda will change from current Senior Managing Executive Officer, Head of Risk Management to new Adviser, Haruhiko Aritomo will move from current Senior Managing Executive Officer; CEO of Sumitomo Corporation China Group; Takayuki Sumita will move from current Senior Managing Executive Officer, Chief Strategy Officer; and Yoshinori Mukaida will move from current Managing Executive Officer; Head of Finance, Sumitomo Shoji Financial Management Co. Ltd.