Nippon Steel Trading Corporation announced that a provisional Audit and Supervisory Board Member (a temporary delegate for audit and supervisory duties) was appointed as of April 17, 2023 as follows by a decision of the Tokyo District Court. Reasons for appointment: As a result of Nippon Steel Corporation (Nippon Steel) becoming the parent company of the Company as of the commencement date (April 14, 2023) of the settlement for a tender offer for shares of common stock of the Company by Nippon Steel (the Tender Offer) following the completion of the Tender Offer, Mr. Hirofumi Funakoshi, who was an outside Audit and Supervisory Board Member of the Company and concurrently held the position of Executive Vice President of Nippon Steel, ceased to qualify as an outside Audit and Supervisory Board Member of the Company, which resulted in the number of outside Audit and Supervisory Board Members becoming less than the statutory ratio (i.e., half or more of the number of Audit and Supervisory Board Members). Based on this, as announced in the press release dated March 10, 2023 titled "Declaration of Opinion in Support of the Tender Offer for the Shares of the Company by Nippon Steel Corporation and Recommendation for the Tender Offer," the Company filed a petition with the Tokyo District Court on March 13, 2023 regarding the appointment of a provisional Audit and Supervisory Board Member in accordance with the procedures specified in Article 346, paragraph (2) of the Companies Act and other relevant laws and regulations, and on April 17, 2023, the Company received a written decision from the Tokyo District Court to the effect that the court appointed Mr. Nobuyuki Arayashiki as a provisional Audit and Supervisory Board Member.

Mr. Hirofumi Funakoshi has resigned as Audit and Supervisory Board Member of the company as of April 14, 2023. Career Summary: Nobuyuki Arayashiki (Date of birth: August 29, 1953): Apr. 1977: Joined Sumitomo Metal Industries Ltd. (currently Nippon Steel Corporation); Jun.

2007: General Manager of Marketing Administration & Planning Division; Outside Audit and Supervisory Board Member of Sumikin Bussan Corporation (currently Nippon Steel Trading Corporation); Jun. 2009: Outside Audit and Supervisory Board Member of Sumikin Bussan Corporation (currently Nippon Steel Trading Corporation); Jun. 2013: Audit and Supervisory Board Member (full-time) and Outside Audit and Supervisory Board Member; Oct.

2013: Sumikin Bussan Corporation became Nippon Steel & Sumikin Bussan Corporation through management integration with Nippon Steel Trading Co., Ltd; Apr. 2019: The Company name changed to Nippon Steel Trading Corporation; Jun. 2019: Resigned from office (to date).

Date of assumption of office: April 17, 2023.