Huatai Securities Co., Ltd. — Proxy Solicitation & Information Statement 2025

Dec 31, 2025

HTSC

(A joint stock company incorporated in the People's Republic of China with limited liability under the Chinese corporate name 华泰证券股份有限公司 and carrying on business in Hong Kong as HTSC) (Stock Code: 6886)

NOTIFICATION LETTER

31 December 2025

Dear Registered Shareholders,

Huatai Securities Co., Ltd. (a joint stock company incorporated in the People's Republic of China with limited liability under the Chinese corporate name 华泰证券股份有限公司 and carrying on business in Hong Kong as HTSC) (the "Company")

• Notice of Publication of Notice, Circular and Proxy Form of the 2026 First Extraordinary General Meeting (the "Current Corporate Communications")

The Current Corporate Communications of the Company have been published in English and Chinese languages and are available on the HKEXnews website of The Stock Exchange of Hong Kong Limited ("HKEX") at www.hkexnews.hk and the Company's website at www.htsc.com.cn. If you have any difficulty in receiving or gaining access to the Current Corporate Communications posted on the Company's website for any reason, please send your request (specifying your name, address and request) by email at huatai.ecom@computershare.com.hk or by notice in writing to the Company's H share registrar (the "H Share Registrar"), Computershare Hong Kong Investor Services Limited, at 17M Floor, Hopewell Centre, 183 Queen's Road East, Wan Chai, Hong Kong. The Company will promptly upon receipt of your request send the Current Corporate Communications to you in printed form free of charge.

Arrangement of Electronic Dissemination of Corporate Communications

Pursuant to Rule 2.07A of the Rules Governing The Listing of Securities on The Stock Exchange of Hong Kong Limited (the "Listing Rules"), the Company is writing to inform/remind you that the Company has adopted electronic dissemination of Corporate Communications, which means any documents issued or to be issued by the Company for the information or action of holders of any of its securities, including but not limited to (a) the directors' report, its annual accounts together with a copy of the auditors' report and, where applicable, its summary financial report; (b) the interim report and, where applicable, its summary interim report; (c) a notice of meeting; (d) a listing document; (e) a circular; and (f) a proxy form.

Please note that both the English and Chinese versions of all future Corporate Communications will be available electronically on the website of the Company at www.htsc.com.cn and the HKEXnews website at www.hkexnews.hk in place of printed copies.

Solicitation of electronic contact details

To ensure timely receipt of the latest Corporate Communications in future, the Company recommends you provide your email address by scanning your personalised QR code printed on the enclosed reply form (the "Reply Form"). Alternatively, you may complete, sign and return the Reply Form to the H Share Registrar at 17M Floor, Hopewell Centre, 183 Queen's Road East, Wan Chai, Hong Kong.

If the Company does not receive a functional email address in your reply, until such time that the functional email address is provided to the H Share Registrar, you will (i) be unable to receive any notifications regarding the publication of future Corporate Communications; and (ii) need to proactively check the Company's website and the HKEXnews website to keep up with the publication of Corporate Communications. However, the Company will send the Actionable Corporate Communications $^{(Note)}$ in printed form in the future in accordance with the Listing Rules.

If you want to receive the future Corporate Communications and/or Actionable Corporate Communications in printed form, please complete, sign and return the Reply Form to the H Share Registrar or send an email to huatai.ecom@computershare.com.hk specifying your name, address and request to receive the Corporate Communications and/or Actionable Corporate Communications in printed form. Please note that your request shall be valid for one year starting from the receipt date of your Reply Form and will expire thereafter, unless it is revoked or superseded before its expiry.

Please be reminded that provision of your correct and effective contact details (including email address and mailing address) to the Company and/or the H Share Registrar is critically important, and any mistakes in such details may result in failure of delivery of the notifications regarding the publication of the Company's Corporate Communications and/or the delivery of the Actionable Corporate Communications to you timely in the future.

Should you have any queries relating to this letter, please call the Company's telephone hotline at (86 25) 8338 7780 during business hours from 9:00 a.m. to 5:00 p.m. (Hong Kong time), Mondays to Fridays, excluding Mainland China public holidays or send an email to huatai.ecom@computershare.com.hk.

By order of the Board

Zhang Hui

Joint Company Secretary

Note: Actionable Corporate Communications refer to any corporate communication that seeks instructions from issuer's securities holders on how they wish to exercise their rights or make an election as the issuer's securities holder.

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CCS8886

HUSH

REPLY FORM 回條

To: Computershare Hong Kong Investor Services Limited
(the "H Share Registrar")
17M Floor, Hopewell Centre
183 Queen's Road East, Wan Chai, Hong Kong

(Please choose ONLY ONE of the options below)
(請從以下選項中只選擇其中一項)

致： 香港中央證券登記有限公司
(「H 股股份登記處」)
香港灣仔皇后大道東 183 號
合和中心 17M 樓

| Option 1: Provide your email address for receipt of future Corporate Communications of the Company via electronic dissemination by scanning your personalized QR code
選項 1：掃瞄 閣下專屬二維碼提供 閣下之電子郵件地址，以接收公司通過電子方式發佈的未來公司通訊 | Personalized QR Code
專屬二維碼 |
| --- | --- |
| You are NOT required to return this Reply Form if you choose Option 1.
如選擇了選項 1， 閣下無須交回本回條。 | |
| Option 2: I/we hereby provide my/our email address in writing for receipt of future Corporate Communications of the following listed company (the "Company") via electronic dissemination
選項 2: 本人/吾等現以書面提供本人/吾等之的電子郵件地址，以確保收到以下上市公司（「公司」）通過電子方式發佈的未來公司通訊 |
| --- |
| Name of Securities holder(s) 證券持有人姓名： Name of the listed company 上市公司名稱：
Huatai Securities Co., Ltd.
华泰证券股份有限公司 |
| Email address 電郵地址: (Note 3 / 附註 1) |
| Option 3: I/we hereby request for receipt of Corporate Communications in printed form (Please mark “✓” in the below box if applicable)
選項 3: 本人/吾等現要求收取公司通訊「印刷版（如適用，請在以下方格內劃上「✓」號）
receive future Corporate Communications in printed copy and noted that this instruction is valid only for one year starting from the receipt date of the Reply Form and will expire thereafter, unless it is revoked or superseded before its expiry. (Note 3)
收取未來公司通訊的印刷本，並已知悉除非提前撤銷或修改了指示，否則本指示由收取回條日期起計一年內有效，此後將過期。(附註 1)
☐ Printed English Version 英文印刷本 ☐ Printed Chinese Version 中文印刷本 ☐ Printed English and Chinese Version 中，英文印刷本 |
| --- |

Signature(s): (Note 1)
簽名：(附註 1)

Contact number:
取結電話號碼：

Date:
日期：

Notes 附註:

1. Please complete all your details clearly. If your shares are held in joint names, all of the joint shareholders should jointly sign this Reply Form in order to be valid. 請清楚填妥 閣下之所有資料。如屬聯名股東，則本回條添加所有聯名股東聯合簽署，方為有效。
2. Any Reply Form with no signature or otherwise incorrectly completed will be void. 任何回條若未有簽署或在其他方面填寫不正確，則本回條將會作廢。
3. If the Company does not receive a functional email address in your reply, you will be unable to receive notifications regarding the publication of Corporate Communications. 如公司沒有收到 閣下的有效電子郵件地址，閣下將無法收到有關發佈公司通訊的通知。
4. If you provide more than one email address to QR code, email, reply form and/or other means, only the latest one email address provided will be registered. 如閣下通過二維碼、電郵、回條及/或其他方式提供多於一般的電子郵件地址，只有閣下最後提供的電子郵件地址將會被用於登記。
5. If you mark "✓" in the box in Option 3, no email address will be registered and only Corporate Communications in printed form will be received. 如閣下在選項 1 方格內劃上「✓」號，將不會有電子郵件地址被登記，只會收取公司通訊的印刷面。

6. For the avoidance of doubt, the Company does not accept any other instructions given on this Reply Form. 取免存貸，在本回條上的任何額外指示、公司將不予處理。

7. Unless otherwise specified, Corporate Communications refer to any documents issued or to be issued to the Company for the information or action of holders of any of its securities, including but not limited to (a) the directors' report, its annual accounts together with a copy of the address, report and, where applicable, its summary (inquiries report, (a) a notice of meeting, (b) a listing document, (c) a circular and (d) a proxy form, 除非另有註明 公司通訊乃指公司已領出或授予發出以免其任何證券的持有人資格或海報行動的任何文件，其中包括但不用於(a)屬事務物，年度條目以求屬於報告副本以求（如適用）經營適應報告；(b)中期報告及其中期報告適應（如適用）；(c)審議通知；(d)上市文件；(e)通函及 (f)代表委任表格。

PERSONAL INFORMATION COLLECTION STATEMENT

收集個人資料聲明

(i) "Personal Data" is this statement has the same meaning as "personal data" in the Personal Data (Privacy) Ordinance, Chapter 484 of the Laws of Hong Kong ("PDPO")。
本聲明中所指的「個人資料」將會添加到第 486 章《個人資料（名稱：條例》（「《名稱條例》」）中「個人資料」的滾動照片。
(ii) Your Personal Data provided in this Reply Form will be used in connection with, including but not limited to, the Company's electronic dissemination of Corporate Communications and to liaise with you on other matters relating to your holdings in the Company. Your supply of Personal Data to the Company is on a voluntary basis. In case of a failure to provide sufficient information, the Company may not be able to process your instruction and/or request as stated in this Reply Form.
閣下於本回條所提到的個人資料照明的(包括但不限於)有關公司以電子方式發佈公司通訊及低 閣下持有的公司證券有關的其他事宜上與 閣下聯絡。 閣下是自願向本公司提供個人資料。若閣下未能提供足夠資料，本公司可能無法處理 閣下在本回條上所收的指示及/或要求。
(iii) Your Personal Data may be disclosed or transferred by the Company to its subsidiaries, the 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 and will be returned for such period as may be necessary for our verification and record purposes。
公司可就任何所說明的用途或在法律規定的情況下，將閣下的個人資料披露或轉移給公司的附屬公司，H 股股份登記處，及/或其他公司或團體，並將在適當期間保留該等個人資料作放置及紀錄用途。
(iv) You have the right to request access to and/or correction of your Personal Data in accordance with the provisions of the PDPO, but such request for access to and/or correction of your Personal Data should be in writing, by mail to the Hong Kong Privacy Officer of the H Share Registrar at 17M Floor, Hopewell Centre, 183 Queen's Road East, Wan Chai, Hong Kong or by email at PrivacyOfficer@computershare.com.hk.
閣下有權根據《名稱條例》的條文撤轉及/或修改 閣下的個人資料。任何該等撤轉及/或修改個人資料的要求均須以審議方式解散至 H 股股份登記處（地址為專業灣仔皇后大道東 183 號合和中心 17M 樓）向香港聯名主任提出，或發放電郵至 PrivacyOfficer@computershare.com.hk

Mailing Label 影音標籤

Computershare Hong Kong Investor Services Limited
香港中央證券登記有限公司
Freeport No. 限使用郵號碼：37
Hong Kong 香港

Please cut the mailing label and stick it on an envelope to return this form to us.
No postage is necessary if posted in Hong Kong.

當閣下寄回此回條時，請將郵寄標籤暫貼於登封上。
如在本港招寄，閣下無需支付服費或貼上郵票。