Weichai Power Co., Ltd. — Board/Management Information 2023

May 29, 2023

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濰柴動力股份有限公司 WEICHAI POWER CO., LTD.

(a joint stock limited company incorporated in the People’s Republic of China with limited liability) (Stock Code: 2338)

SUPPLEMENTAL ANNOUNCEMENT

CHANGE OF EMPLOYEE REPRESENTATIVE SUPERVISOR

Reference is made to the announcement of Weichai Power Co., Ltd. (the “ Company ”) dated 26 May 2023 (the “ Announcement ”) in relation to, among others, the appointment of the new employee representative Supervisor of the Company (the “ Employee Representative Supervisor ”) Mr. Zhao Yongchang (“ Mr. Zhao ”).

As disclosed in the Announcement, at the staff delegation meeting of the Company held on 26 May 2023, Mr. Zhao has been elected as an Employee Representative Supervisor. In addition to the details on Mr. Zhao’s experience and qualification as provided in the Announcement, the Board wishes to supplement that the age of Mr. Zhao is 45.

The above supplemental information does not affect the other information contained in the Announcement.

By order of the Board of Directors Weichai Power Co., Ltd. Tan Xuguang Chairman and CEO

Hong Kong, 29 May 2023

As at the date of this announcement, the executive Directors of the Company are Mr. Tan Xuguang, Mr. Zhang Quan, Mr. Xu Xinyu, Mr. Sun Shaojun, Mr. Yuan Hongming and Mr. Yan Jianbo; the non-executive Directors of the Company are Mr. Zhang Liangfu, Mr. Jiang Kui, Mr. Gordon Riske and Mr. Michael Martin Macht; and the independent non-executive Directors of the Company are Mr. Li Hongwu, Mr. Wen Daocai, Ms. Jiang Yan, Mr. Yu Zhuoping and Ms. Zhao Huifang.