/-- Announcement on Implementation of Semi-annual Dividend Distribution for 2025
NEWS

-- Announcement on Implementation of Semi-annual Dividend Distribution for 2025

Shanghai Stock Exchange
2025/09/05

Securities code: 688399 Securities abbreviation: Shuoshi Biotechnology Announcement number: 2025-032

Jiangsu Shuoshi Biotechnology Co., Ltd.

Announcement on the Implementation of Semi-annual Equity Distribution in 2025

The company's board of directors and all directors guarantee that the announcement does not contain any false records, misleading statements or major omissions, and assume legal responsibility for the authenticity, accuracy and completeness of its contents in accordance with the law. Important content reminder:

 Whether it involves differentiated dividend transfer: No

 Distribution ratio per share

Cash dividend per share 3.40 yuan

 Relevant dates

Equity registration date Ex-rights (dividend) date Cash dividend payment date

2025/9/10 2025/9/11 2025/9/11

1. The session and date of the general meeting of shareholders passing the distribution plan

This profit distribution plan was reviewed and approved by the company's 2025 first extraordinary shareholders' meeting on August 27, 2025.

2. Distribution plan

  1. Disbursement year: Half year of 2025

  2. Assign objects:

As of the closing of the Shanghai Stock Exchange in the afternoon of the equity registration day, all shareholders of the company registered with the Shanghai Branch of China Securities Depository and Clearing Co., Ltd. (hereinafter referred to as "China Clearing Shanghai Branch").

  1. Distribution plan:

This profit distribution is based on the company's total share capital of 83,871,721 shares before the implementation of the plan, and a cash dividend of 3.40 yuan (tax included) will be distributed per share, with a total cash dividend of 285,163,851.40 yuan.

3. Relevant dates

Equity registration date Ex-rights (dividend) date Cash dividend payment date

2025/9/10 2025/9/11 2025/9/11

4. Distribution Implementation Methods

  1. Implementation measures

In addition to the objects distributed by the company itself, the company's remaining dividends on the unrestricted tradable shares are entrusted to the Shanghai Branch of China Securities Clearing Company to be distributed through its fund clearing system to shareholders who are registered after the Shanghai Stock Exchange closes on the equity registration date and have completed designated transactions with each member of the Shanghai Stock Exchange. Investors who have completed designated transactions can receive cash dividends at their designated securities business department on the dividend distribution date. Shareholder dividends that have not completed designated transactions will be temporarily kept by China Securities Clearing Company Shanghai Branch and will be distributed after designated transactions are completed.

  1. Issue objects by yourself

Cash dividends for the shares held by shareholders Shaoxing Runkang Biopharmaceutical Equity Investment Partnership (Limited Partnership), Wang Guoqiang, Liu Zhonghua, Taizhou Shuokang Enterprise Management Consulting Partnership (Limited Partnership), and Taizhou Shuoyuan Enterprise Management Consulting Partnership (Limited Partnership) will be distributed by the company itself.

  1. Tax deduction instructions

(1) For natural person shareholders and securities investment funds who hold the company's unrestricted tradable shares, according to the relevant provisions of the "Notice on Issues Concerning the Differentiated Personal Income Tax Policy on Dividends and Bonuses of Listed Companies" (Caishui [2015] No. 101) and the "Notice on Issues Concerning the Implementation of the Differentiated Personal Income Tax Policy on Dividends and Bonuses of Listed Companies" (Caishui [2012] No. 85), listed company stocks obtained by individuals from the public issuance and transfer market must be held for more than 1 year If the shareholding period is less than 1 month (including 1 month), the dividend income will be included in the taxable income in full, and the actual tax burden will be 20%; if the shareholding period is from more than 1 month to 1 year (inclusive), the dividend income will be included in the taxable income at a rate of 50%, and the actual tax burden will be 10%. According to the provisions of the above notice, when the company distributes dividends, the company will not withhold personal income tax for the time being, and the actual cash dividend per share will be 3.40 yuan (tax included); when it transfers the stock, China Securities Clearing Shanghai Branch will calculate the tax payable based on its shareholding period, and the securities company and other share custody institutions will deduct it from its capital account and transfer it to China Clearing Shanghai Branch. China Clearing Shanghai Branch shall pay the tax in May of the following month. The tax will be transferred to the company within 10 working days, and the company will declare and pay the tax to the competent tax authority within the statutory reporting period of the month in which the tax is received.

(2) For qualified foreign institutional investors ("QFII") shareholders who hold the company's shares, the company shall, in accordance with the provisions of the "Notice on Issues Concerning the Withholding and Payment of Corporate Income Tax on the Payment of Dividends, Dividends and Interests by Chinese Resident Enterprises to QFIIs" (Guo Shui Han [2009] No. 47) issued by the State Administration of Taxation on January 23, 2009, The corporate income tax is uniformly withheld and paid at a tax rate of 10%, and the actual after-tax cash dividend per share is 3.06 yuan. If relevant shareholders believe that the dividends and bonus income they receive need to enjoy the benefits of tax treaties (arrangements), they may apply to the competent tax authorities on their own after receiving the dividends and bonuses in accordance with regulations.

(3) For investors in the Hong Kong market (including enterprises and individuals) who invest in the company’s A-shares on the Shanghai Stock Exchange (“Shanghai Stock Connect”), their dividends will be distributed in RMB by the company through China Clearing Shanghai Branch according to the account of the nominal holder of the stock, and tax deductions will be made in accordance with the "Notice of the Ministry of Finance, the State Administration of Taxation, and the China Securities Regulatory Commission on the relevant tax policies for the pilot program of the Shanghai-Hong Kong Stock Market Transaction Interconnection Mechanism" (Finance and Taxation [2014] 81 No.) was implemented, the company withheld and paid income tax at a tax rate of 10%, and actually distributed a cash dividend of RMB 3.06 per share after tax.

(4) For other institutional investors and legal person shareholders who hold the company’s shares, the company does not withhold and remit corporate income tax. Such shareholders should make their own judgments on whether they should pay local corporate income tax in accordance with the relevant provisions of the "Enterprise Income Tax Law of the People's Republic of China" and other relevant provisions. The actual cash dividend distributed per share is 3.40 yuan (tax included).

5. Consultation methods

If you have any questions about this equity distribution, please consult according to the following contact information:

Contact Department: Board Office

Contact number: 0523-80225599

Announcement is hereby made.

Board of Directors of Jiangsu Shuoshi Biotechnology Co., Ltd.

September 5, 2025