AGC Inc. announced that following the recommendation of the Nominating Committee, and approval at the meeting of the Board of Directors held today, AGC Inc. (the Company) hereby announces the following changes in the members of the Board of Directors, Audit & Supervisory Board and Executive Officers as described below. Changes in the Board of Directors (effective as of March 27, 2026): Resigning Directors: Takuya Shimamura, Chairman, will become AGC's Senior Fellow post-resignation. Hiroyuki Yanagi, Director, and Keiko Honda, Director, are also resigning.

Changes in the Audit & Supervisory Board (effective as of March 27, 2026): Resigning Audit & Supervisory Board Member: Isamu Kawashima, Audit & Supervisory Board Member (on a full-time basis), Naoko Araki, Audit & Supervisory Board Member (on a full-time basis), Tatsuro Ishizuka, Audit & Supervisory Board Member, and Haruka Matsuyama, Audit & Supervisory Board Member, are all resigning. Change in Executive Officer (effective as of March 27, 2026): Resigning Executive Officer: Shinji Miyaji, currently serving as Representative Director, Senior Executive Vice President, CFO, CCO, will transition to the position of Representative Director, Senior Executive Vice President, Assistant to CEO effective on January 1, 2026. Additionally, Atsushi Ichikawa, currently the Senior Vice President of Architectural Glass Europe & Americas Company, will take on the role of Executive Officer, Assistant to CTO effective on January 1, 2026, and post-resignation, he will become AGC's Executive Fellow.