NOTICE REGARDING TRANSITION TO A COMPANY WITH AN AUDIT AND SUPERVISORY COMMITTEE

Nippon Telegraph and Telephone Corporation ("NTT") hereby announces that, at a meeting of its Board of Directors held March 25, 2025, the board resolved to change from a company with an audit and supervisory board to a company with an audit and supervisory committee for the purpose of further enhancing NTT's corporate governance structure, as further described below.

NTT has been continuously discussing ways to further sustainably enhance the corporate value of the entire group. NTT has decided to transition to a company with an audit and supervisory committee to further enhance discussions on management policies and strategies, to further strengthen the monitoring function of the Board of Directors, and to make the governance structure more easily understood by overseas investors and other stakeholders as a global company.

With respect to the transition to a company with an audit and supervisory committee, NTT plans to implement the change upon receiving approval of the necessary amendments to the Articles of Incorporation at the NTT's 40th Ordinary General Meeting of Shareholders scheduled to be held in June 2025, as well as approval by the Minister of Internal Affairs and Communications for the partial amendment of the Articles of Incorporation. We will promptly announce the specific proposed amendments to the Articles of Incorporation and other relevant matters once they have been determined.