CStone Pharmaceuticals — Share Issue/Capital Change 2026

Jan 5, 2026

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Remarks:

Monthly Return for Equity Issuer and Hong Kong Depositary Receipts listed under Chapter 19B of the Exchange Listing Rules on Movements in Securities

For the month ended:	31 December 2025				Status: New Submission
To : Hong Kong Exchanges and Clearing Limited
Name of Issuer:	Yankuang Energy Group Company Limited (incorporated in the People's Republic of China with limited liability)
Date Submitted:	05 January 2026
	I. Movements in Authorised / Registered Share Capital
1. Class of shares	Ordinary shares		Type of shares	A			Listed on the Exchange (Note 1)		No
Stock code (if listed)	600188	Description			A Shares (Shanghai Stock Exchange)
			Number of authorised/registered shares			Par value				Authorised/registered share capital
Balance at close of preceding month		5,961,980,544			RMB		1		5,961,980,544
Increase / decrease (-)								RMB
Balance at close of the month		5,961,980,544			RMB	1		RMB		5,961,980,544
2. Class of shares	Ordinary shares		Type of shares	H			Listed on the Exchange (Note 1)		Yes
Stock code (if listed)	01171		Description H Shares
			Number of authorised/registered shares			Par value			Authorised/registered share capital
Balance at close of preceding month			4,075,500,000			1		RMB	4,075,500,000
Increase / decrease (-)							RMB
Balance at close of the month			4,075,500,000			RMB 1		RMB	4,075,500,000
			Total authorised/registered share capital at the end of the month:				RMB		10,037,480,544

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1. As the Company is incorporated in the People's Republic of China, the concept of "authorised share capital" is not applicable. The information shown as "authorised/registered share capital" in section I above refers the "registered share capital" of the Company.

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II. Movements in Issued Shares and/or Treasury Shares

1. Class of shares	Ordinary shares		Type of shares	A		Listed on the Exchange (Note 1)		No
Stock code (if listed)	600188		Description		A Shares (Shanghai Stock Exchange)
			Number of issued shares (excluding treasury shares)		Number of treasury shares		Total number of issued shares
Balance at close of preceding month		5,961,980,544				5,961,980,544
Increase / decrease (-)
Balance at close of the month		5,961,980,544				0 5,961,980,544
2. Class of shares	Ordinary shares		Type of shares	H		Listed on the Exchange (Note 1)		Yes
Stock code (if listed)	01171		Description	H Shares
		Number of issued shares (excluding treasury shares)			Number of treasury shares	Total number of issued shares
Balance at close of preceding month		4,075,500,000				4,075,500,000
Increase / decrease (-)
Balance at close of the month		4,075,500,000			0			4,075,500,000

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III. Details of Movements in Issued Shares and/or Treasury Shares

(A). Share Options (under Share Option Schemes of the Issuer) Not applicable

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(B). Warrants to Issue Shares of the Issuer Not applicable

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(C). Convertibles (i.e. Convertible into Shares of the Issuer) Not applicable

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(D). Any other Agreements or Arrangements to Issue Shares of the Issuer, including Options (other than Share Option Schemes) Not applicable

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(E). Other Movements in Issued Shares and/or Treasury Shares Not applicable

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IV. Information about Hong Kong Depositary Receipt (HDR) Not applicable

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Not applicable

Submitted by: Huang Xiao Long

Title: Director

(Director, Secretary or other Duly Authorised Officer)

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Notes

• 1. The Exchange refers to The Stock Exchange of Hong Kong Limited.
• 1. In the case of repurchase of shares (shares repurchased and cancelled) and redemption of shares (shares redeemed and cancelled), "date of event" should be construed as "cancellation date".

In the case of repurchase of shares (shares held as treasury shares), "date of event" should be construed as "date on which shares were repurchased and held by the issuer in treasury".

• 1. The information is required in the case of repurchase of shares (shares repurchased for cancellation but not yet cancelled) and redemption of shares (shares redeemed but not yet cancelled). Please state the number of shares repurchased or redeemed during the month or in preceding month(s) but pending cancellation as at close of the month as a negative number.
• 1. Items (i) to (viii) are suggested forms of confirmation. The listed issuer may amend the item(s) that is/are not applicable to meet individual cases. Where the issuer has already made the relevant confirmations in a return published under Main Board Rule 13.25A / GEM Rule 17.27A in relation to the securities issued, or the treasury shares sold or transferred, no further confirmation is required to be made in this return.
• 1. "Identical" means in this context:
• . the securities are of the same nominal value with the same amount called up or paid up;
• . they are entitled to dividend/interest at the same rate and for the same period, so that at the next ensuing distribution, the dividend/interest payable per unit will amount to exactly the same sum (gross and net); and
• . they carry the same rights as to unrestricted transfer, attendance and voting at meetings and rank pari passu in all other respects.

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