PegBio Co., Ltd. — Share Issue/Capital Change 2025

Jun 4, 2025

FF301

HKEX

香港交易所

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 May 2025

Status: New Submission

To : Hong Kong Exchanges and Clearing Limited

Name of Issuer: PegBio Co., Ltd.

Date Submitted: 04 June 2025

I. Movements in Authorised / Registered Share Capital

1. Class of shares	Ordinary shares		Type of shares	H			Listed on the Exchange (Note 1)		Yes
Stock code (if listed)	02565		Description	H Shares
		Number of authorised/registered shares			Par value			Authorised/registered share capital
Balance at close of preceding month		166,386,845			RMB	1		RMB	166,386,845
Increase / decrease (-)		0						RMB
Balance at close of the month		166,386,845			RMB	1		RMB	166,386,845
2. Class of shares	Ordinary shares		Type of shares	Other type (specify in description)			Listed on the Exchange (Note 1)		No
Stock code (if listed)	N/A		Description	Unlisted Shares
		Number of authorised/registered shares			Par value			Authorised/registered share capital
Balance at close of preceding month		219,568,687			RMB	1		RMB	219,568,687
Increase / decrease (-)		0						RMB
Balance at close of the month		219,568,687			RMB	1		RMB	219,568,687

Total authorised/registered share capital at the end of the month: RMB 385,955,532

Remarks:

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The H shares of PegBio Co., Ltd. (the "Company") were newly listed on the Main Board of The Stock Exchange of Hong Kong Limited on 27 May 2025 (the "Listing Date"). The information contained herein under "Balance at close of preceding month" refers to the "Balance upon listing on the Listing Date".

As the Company is a joint stock company incorporated in the People's Republic of China, the concept of "authorised share capital" is not applicable. The information contained in section I refers to the "registered share capital".

As disclosed in the prospectus of the Company dated May 19, 2025, immediate upon completion of the Global Offering and the conversion of 259,880,839 Unlisted Shares into H Shares, the issued share capital of the Company shall include 106,791,193 Unlisted Shares and 279,164,339 H Shares. As of May 31, 2025, 147,103,345 Unlisted Shares had been converted to 147,103,345 H Shares, and the conversion of the remaining 112,777,494 Unlisted Shares to 112,777,494 H Shares is in progress as of the date of this submission.

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II. Movements in Issued Shares and/or Treasury Shares

1. Class of shares	Ordinary shares		Type of shares	H		Listed on the Exchange (Note 1)		Yes
Stock code (if listed)	02565		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		166,386,845			0		166,386,845
Increase / decrease (-)		0			0
Balance at close of the month		166,386,845			0		166,386,845
2. Class of shares	Ordinary shares		Type of shares	Other type(specify in description)		Listed on the Exchange (Note 1)		No
---	---	---	---	---	---	---	---	---	---
Stock code (if listed)	N/A		Description	Unlisted Shares
		Number of issued shares (excluding treasury shares)			Number of treasury shares		Total number of issued shares
Balance at close of preceding month		219,568,687			0		219,568,687
Increase / decrease (-)		0			0
Balance at close of the month		219,568,687			0		219,568,687

Remarks:

The H shares of the Company were newly listed on the Main Board of The Stock Exchange of Hong Kong Limited on 27 May 2025. The information contained herein under "Balance at close of preceding month" refers to the "Balance upon listing on the Listing Date".

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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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V. Confirmations Not applicable

Submitted by: HUANG Yifeng

Title: Joint Company Secretary
(Director, Secretary or other Duly Authorised Officer)

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Notes

1. The Exchange refers to The Stock Exchange of Hong Kong Limited.
2. 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.
2. 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.

3. "Identical" means in this context:

4. the securities are of the same nominal value with the same amount called up or paid up;

5. 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
6. 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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