CStone Pharmaceuticals — Earnings Release 2022

Jul 18, 2022

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

This announcement appears for information purposes only and is not intended to and does not constitute, or form part of, an invitation or offer to acquire, purchase or subscribe for any securities of Yancoal or Yankuang Energy or the solicitation of any vote or approval in any jurisdiction.

This announcement is not for release, publication or distribution, in whole or in part, in, into or from any jurisdiction where to do so would constitute a violation of the applicable laws or regulations of such jurisdiction.

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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)

CLARIFICATION ANNOUNCEMENT REGARDING THE POSITIVE PROFIT ALERT FOR THE FIRST HALF OF 2022

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; and (vi) the announcement made by Yankuang Energy on 14 July 2022 in relation to the positive profit alert for the first half of 2022 (the “ Positive Profit Alert Announcement ”) as appended to this announcement.

Unless otherwise defined herein, capitalised terms used in this announcement shall have the same meanings as those in the Rule 3.7 Announcement. This clarification announcement is published in accordance with Practice Note 2 issued by the Securities and Futures Commission.

Yankuang Energy would like to clarify that the profit alert (the “ Profit Alert ”) included in the Positive Profit Alert Announcement constitutes a profit forecast under Rule 10 of the Takeovers Code and should therefore be reported on by Yankuang Energy’s financial advisers and auditors or accountants in accordance with Rule 10.4 of the Takeovers Code. In view of the requirements of timely disclosures of inside information under Rule

13.09(2)(a) of the Listing Rules and pursuant to the Inside Information Provisions (as defined in the Listing Rules) of Part XIVA of the Securities and Futures Ordinance (Chapter 571 of the Laws of Hong Kong), Yankuang Energy is required to issue the Positive Profit Alert Announcement as soon as practicable and given the time constraints, Yankuang Energy has encountered practical difficulties in meeting the reporting requirements under Rule 10.4 of the Takeovers Code. Accordingly, the Positive Profit Alert Announcement did not meet the standard required by Rule 10 of the Takeovers Code.

Pursuant to Practice Note 2, the reports from Yankuang Energy’s financial adviser and auditors or accountants on the Profit Alert are required to be included in the next document to be sent to Yankuang Energy’s and Yancoal’s shareholders (the “ Shareholders’ Document ”). As the unaudited interim results announcement of the Company for the six months ended 30 June 2022 (the “ Interim Results ”) is expected to be published after trading hours on 26 August 2022, which is envisaged to be prior to the despatch of the next Shareholders’ Document, in accordance with the requirement of Rule 10 of the Takeovers Code to report on the Profit Alert, such report is expected to be superseded by the publication of the Interim Results by Yankuang Energy.

Save for the clarification stated in this announcement, all information in the Positive Profit Alert Announcement remains unchanged.

WARNING: Shareholders and potential investors should note that the Profit Alert has not been reported on in accordance with the requirements under Rule 10 of the Takeovers Code and does not meet the standard required by Rule 10 of the Takeovers Code. Shareholders and potential investors should therefore exercise caution in placing reliance on the Profit Alert in assessing the merits and demerits of the Potential Transactions.

Shareholders and potential investors of Yankuang Energy and Yancoal should also be aware that the Potential Transactions are subject to significant uncertainty. The Potential Transactions are subject to market conditions and any decision to proceed by Yankuang Energy, and may or may not proceed. If the Potential Transactions are finalised and decided by Yankuang Energy to be proceeded with, they will be subject to the fulfilment or (where applicable) waiver of certain pre-conditions (such as obtaining Yankuang Energy’s shareholders’ approval, the filing with, and approval of, the relevant PRC and overseas governmental and regulatory bodies, and other pre-conditions to be determined based on the potential transaction structure if the Potential Transactions proceed) and conditions, and may or may not be completed. Hence, there is no assurance that the Potential Transactions will proceed, materialise or be consummated, eventually.

Shareholders and potential investors of Yankuang Energy and Yancoal are therefore 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.

Shareholders and potential investors of Yankuang Energy and Yancoal should also be aware that this announcement: (i) is not intended to constitute, and does not constitute, an offer capable of acceptance or to otherwise give rise to any binding

contract or commitment; and (ii) is not intended to constitute, and does not constitute, a proposal to make a takeover bid for the purposes of section 631 of the Australian Corporations Act 2001 (Cth) or any firm intention to make any offer under the Takeovers Code in Hong Kong.

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

18 July 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, Mr. Wang Ruolin 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.

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

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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)

POSITIVE PROFIT ALERT FOR THE FIRST HALF OF 2022

This announcement is made pursuant to the disclosure obligations under Part XIVA of the Securities and Futures Ordinance and Rule 13.09(2)(a) and 13.10B of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited.

I. Estimated results for this period (calculated in accordance with the Chinese Accounting Standards)

1. Period of estimated results

1 January 2022 to 30 June 2022.

2. Estimated results

Yankuang Energy Group Company Limited (the “ Company ”) and the board of directors of the Company (the “ Board* ”) wish to inform the shareholders and potential investors of the Company that, according to the preliminary calculation by the Company’s financial department, the Company expects to realize the net profit that attributable to the shareholders of the listed company to about RMB18,000 million in the first half of 2022, which will increase by about RMB11,958 million or with an increase of 198% compared with the data of the same period of the previous year.

According to the preliminary calculation by the Company’s financial department, the Company expects that the net profit attributable to the shareholders of the listed company

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after deducting non-recurring gains and losses is about RMB17,600 million in the first half of 2022, which will increase by about RMB11,529 million or with an increase of 190% compared with the data of the same period of the previous year.

1. The estimated results for this period have not been audited by certified public accountants.

II. Results for the same period of last year (calculated in accordance with the Chinese Accounting Standards)

1. Net profit attributable to shareholders of the Company: RMB6,042 million.

2. Net profit attributable to the shareholders of the listed company after deducting nonrecurring gains and losses: RMB6,071 million.

3. Earnings per share: RMB1.2438 per share.

III. Main reason for the estimated profit growth for this period

The significant growth of the Company’s profit for the first half of 2022 as compared to the same period of last year is mainly due to the following reason:

In the first half of 2022, as affected by the continuous rise in energy prices in both domestic and overseas, the prices of the Company’s major products have remained at high level; the Company continued to promote lean management to hedged the impact of rising costs, which resulted in a significant growth on its financial performance.

IV. RISK WARNINGS

There are no material uncertain factors in the Company, which will affect the accuracy of the contents of this estimated results.

V. OTHER EXPLANATORY MATTER

The estimated results are only preliminary accounting data. Detailed and accurate financial information will be set out in the formally disclosed 2022 Interim Report of the Company. Investors are advised to be aware of investment risks.

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

Zoucheng, Shandong Province, the PRC 14 July 2022

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

• For identification purpose only

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