PegBio Co., Ltd. — Proxy Solicitation & Information Statement 2026

Jun 1, 2026

PegBio

PegBio Co., Ltd.

派格生物醫藥(杭州)股份有限公司

(A joint stock company incorporated in the People's Republic of China with limited liability)

(Stock Code: 2565)

FORM OF PROXY FOR USE AT THE 2025 ANNUAL GENERAL MEETING TO BE HELD ON WEDNESDAY, JUNE 24, 2026

I/We (Name 1) (Name) (In block capitals)

of (Address)

being the holder(s) of _____ H Shares (Note 2)

of RMB1.00 each in the share capital of PegBio Co., Ltd. (the "Company") hereby appoint the Chairman of the meeting or (Name 3) (Name) _____

of (Address)

of (Email address)

or failing him/her (Name)

of (Address)

of (Email address)

as my/our proxy to attend and vote for me/us and on my/our behalf at the 2025 annual general meeting (the "AGM") of the Company to be held with the combination of a physical meeting at 6/F, Block A, No. 520 Shaoxing Road, Gongshu District, Hangzhou, Zhejiang Province, PRC on Wednesday, June 24, 2026 10:00 a.m. (Hong Kong Time) and at any adjournment thereof or on any resolution or motion which is proposed thereat. My/our proxy is authorized and instructed to vote as indicated in respect of the undermentioned resolutions:

Ordinary Resolutions (Note 4)		For (Note 4)	Against (Note 4)	Abstain (Note 4)
1.	To consider and approve the resolution on the 2025 Report of the Board of Directors.
2.	To consider and approve the resolution on the 2025 Report of the Supervisory Committee.
3.	To consider and approve the resolution on the 2025 Annual Report and audited financial statements for 2025.
4.	To consider and approve the resolution on the 2025 Profit Distribution Plan.
5.	To consider and approve the resolution on the proposed annual financial budget for 2026.
6.	To consider and approve the resolution on the proposed appointment of independent non-executive Director.
7.	To consider and approve the resolution on the proposed re-appointment of auditor and to authorize the Board to fix its remuneration.
8.	To consider and approve the resolution on the proposed remuneration for Directors and Supervisors for 2026.
9.	To consider and approve the resolution on the proposed application for credit facilities from financial institutions.
Special Resolutions (Note 4)		For (Note 4)	Against (Note 4)	Abstain (Note 4)
10.	To consider and approve the resolution on the proposed increase in registered capital and amendments to the articles of association.
11.	To consider and approve the proposed granting of a general mandate to the Board to exercise the right to allot, issue and/or deal with new shares of the Company.
12.	To consider and approve the proposed granting of general mandate to the Board to repurchase H Shares.

Dated this __ day of __, 2026

Signature(s) _____ (Note 5)

Notes:

1. Please insert the full name(s) (in Chinese or in English) and address(es) (must be the same address(es) as shown in the register of members) as shown in the register of members of the Company in BLOCK LETTERS.
2. Please insert the number of shares of the Company registered in your name(s) to which this proxy relates. If a number is inserted, this form of proxy will be deemed to relate only to those shares. If no number is inserted, this form of proxy will be deemed to relate to all shares of the Company registered in your name(s) (whether alone or jointly with others).
3. If any proxy other than the Chairman of the meeting is preferred, delete the words "the Chairman of the meeting or" and insert the name and address of the proxy desired in the space provided. A shareholder may appoint one or more proxies to attend and vote in his stead. A proxy need not be a shareholder of the Company. Any alteration made to this form of proxy must be duly initiated by the person who signs it.
4. IMPORTANT: if you wish to vote for any resolution, please tick in the box marked "For" or insert the number of share(s) you hold. If you wish to vote against any resolution, please tick in the box marked "Against" or insert the number of share(s) you hold. If you wish to abstain for vote, please tick in the box marked "Abstain" or insert the number of share(s) you hold. Any vote which is not filled or filled wrongly or with unrecognizable writing or not cast will be counted as "Abstained". If you do not indicate how you wish your proxy to vote, your proxy will be entitled to exercise his discretion. Unless you have indicated otherwise in this form of proxy, your proxy will also be entitled to vote at his discretion on any resolution duly put to the AGM other than those referred to in the notice convening the AGM.
5. This form of proxy must be signed by you or your attorney duly authorised in writing or, in the case of a legal person, must either be executed under seal or under the hand of a director thereof or an attorney duly authorised to sign the same. In case of joint holders of shares, this form of proxy must be signed by the joint holder whose name stands first in the register of members of shares of the Company.
6. In order to be valid, this form of proxy together with the power of attorney or other authority, if any, under which it is signed or a certified copy of that power of attorney or authority, must be deposited at the Company's branch share registrar in Hong Kong, Computershare Hong Kong Investor Services Limited at 17M Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong, not less than 24 hours before the time appointed for the meeting (i.e. not later than 10:00 a.m. on Tuesday, June 23 2026) or the adjourned meeting (as the case may be). Completion and return of this form of proxy shall not preclude you from attending and voting in person at the meeting and, in such event, the instrument appointing a proxy shall be deemed to be revoked.
7. Save as defined otherwise, capitalized terms defined in the circular dated June 1, 2026 issued by the Company shall have the same meanings when used herein.

PERSONAL INFORMATION COLLECTION STATEMENT

(i) "Personal Data" in this statement has the same meaning as "personal data" in the Personal Data (Privacy) Ordinance, Chapter 486 of the Laws of Hong Kong ("PDPO").
(ii) Your and your proxy's Personal Data provided in this form of proxy will be used in connection with processing your request for the appointment of a proxy to attend, act and vote on your behalf as directed above at the Annual General Meeting. Your supply of your and your proxy's Personal Data is on voluntary basis. However, the Company may not be able to process your request unless you provide us with such Personal Data.
(iii) Your and your proxy's Personal Data may be disclosed or transferred by the Company to its H share registrar, and/or other companies or bodies for any of the stated purposes, or when it is required to do so by law, for example, in response to a court order or a law enforcement agency's request, and retained for such period as may be necessary for our verification and record purposes.
(iv) By providing your proxy's Personal Data in this form of proxy, you should have obtained the express consent (which has not been withdrawn in writing) from your proxy in using his/her personal data provided in this form of proxy and that you have informed your proxy of the purpose for and the manner in which his/her data may be used.
(v) You/your proxy have/has the right to request access to and/or correction of your/your proxy's Personal Data respectively in accordance with the provisions of the PDPO. Any such request for access to and/or correction of your/your proxy's Personal Data should be in writing to the Personal Data Privacy Officer, Computershare Hong Kong Investor Services Limited, at Shops 1712-1716, 17th Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong.