CStone Pharmaceuticals — M&A Activity 2022

Sep 8, 2022

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兗礦能源集團股份有限公司

YANKUANG ENERGY GROUP COMPANY LIMITED*

(A joint stock limited company incorporated in the People’s Republic of China with limited liability) (Stock Code: 01171)

UPDATE PURSUANT TO RULE 3.7 OF THE TAKEOVERS CODE

TERMINATION OF THE POTENTIAL TRANSACTIONS

This announcement is made by Yankuang Energy Group Company Limited (“ Yankuang Energy ”) pursuant to Rule 3.7 of the Hong Kong Code on Takeovers and Mergers (the “ Takeovers Code ”).

Reference is made to (i) the announcement made by Yankuang Energy on 25 May 2022 in relation to the Potential Transactions pursuant to, among other things, Rule 3.7 of the Takeovers Code (the “ Rule 3.7 Announcement ”), (ii) the announcement made by Yancoal on 30 May 2022 in relation to the Potential Transactions, (iii) the announcement made by Yancoal on 7 June 2022 in relation to the Potential Transactions, (iv) the announcement made by Yankuang Energy on 7 June 2022 in relation to a progress update on the Potential Transactions, (v) the monthly update announcements made by Yankuang Energy and Yancoal respectively both dated 7 July 2022, (vi) the clarification announcement made by Yankuang Energy on 18 July 2022 regarding the positive profit alert for the first half of 2022, and (vii) the monthly update announcements made by Yankuang Energy and Yancoal respectively both dated 8 August 2022.

Unless otherwise defined herein, capitalised terms used in this announcement shall have the same meanings as those in the Rule 3.7 Announcement.

Yankuang Energy wishes to update the respective shareholders and potential investors of Yankuang Energy and Yancoal that, in light of the recent market conditions, it will terminate the Potential Transactions. Yankuang Energy reserves the right to make future acquisitions of Yancoal Shares subject to and in accordance with the Takeovers Code and other relevant regulatory requirements. Under Rule 31.1(b) of the Takeovers Code, neither Yankuang Energy nor any person who acted in concert with it, nor any person subsequently acting in concert with any of them, may within 6 months from the date of

this announcement, (i) announce an offer or possible offer for Yancoal, or (ii) acquire any voting rights of Yancoal if Yankuang Energy or persons acting in concert with it would thereby become obliged under Rule 26 of the Takeovers Code to make an offer.

WARNING: Shareholders and potential investors of Yankuang Energy and Yancoal are advised to exercise caution when dealing in the shares and/or other securities of Yankuang Energy and Yancoal. Persons who are in doubt as to the action they should take should consult their professional stockbroker, bank manager, solicitor or other professional adviser.

By order of the board of directors Yankuang Energy Group Company Limited Li Wei* Chairman of the board of directors

Zoucheng, Shandong Province, the PRC

8 September 2022

* For identification purposes only

As of the date of this announcement, the directors of Yankuang Energy are Mr. Li Wei, Mr. Liu Jian, Mr. Xiao Yaomeng, Mr. Zhu Qingrui, Mr. Zhao Qingchun and Mr. Huang Xiaolong, and the independent non-executive directors of Yankuang Energy are Mr. Tian Hui, Mr. Zhu Limin, Mr. Cai Chang, and Mr. Poon Chiu Kwok.

The directors of Yankuang Energy jointly and severally accept full responsibility for the accuracy of the information contained in this announcement and confirm, having made all reasonable enquiries, that to the best of their knowledge, opinions expressed in this announcement have been arrived at after due and careful consideration and there are no other facts not contained in this announcement the omission of which would make any statements in this announcement misleading.

This announcement is originally prepared in English. In case of any inconsistency between the English version and the Chinese version, the English version shall prevail.