The board of directors of China Oilfield Services Limited announced that Ms. Chong Xiaojie ("Ms. Chong") has resigned as the chief financial officer of the Company (the "CFO") due to adjustment of her work arrangement, with effect from 18 June 2024. The Board announced that Mr. Qie Ji ("Mr. Qie") has been appointed as the CFO of the Company, with effect from 18 June 2024. Mr. Qie Ji, Chinese, born in 1977, is a senior accountant.

He graduated from Xi'an Jiaotong University in 2000, majoring in accounting (special orientation of CPA), and obtained a bachelor's degree in economics. From July 2000 to 2007, he served as the audit manager of Reanda Certified Public Accountants. Upon leaving from Reanda Certified Public Accountants in 2007 and prior to joining the Company, Mr. Qie successively served as the accounting supervisor, senior supervisor of performance appraisal, the deputy director of budget management office and director of budget management office of the financial capital department of China National Offshore Oil Corporation.

Mr. Qie was appointed as the CFO of the Company on 18 June 2024.