Securities code: 688366 Securities abbreviation: Haohaishengke Announcement No.: 2024-055

Shanghai Haohai Biotechnology Co., Ltd

Regarding the second phase of the repurchase of the company by way of centralized auction transaction

Announcement on the progress of A shares

The board of directors and all directors of the company guarantee that there are no false records, misleading statements or material omissions in the content of this announcement, and assume legal responsibility for the authenticity, accuracy and completeness of its content in accordance with the law.

Important Content Notes:

The repurchase plan was first disclosed on August 17, 2024

The implementation period of the repurchase plan is 12 after the 25th meeting of the fifth board of directors is deliberated and approved

month

The estimated repurchase amount is 10,000.00 yuan ~ 20,000.00 yuan

□ reduce the registered capital

Buyback Purpose √ for employee stock ownership plans or equity incentives

□ is used to convert the company's convertible bonds

□ to maintain the company's value and shareholders' rights

The cumulative number of shares repurchased is 0 shares

Cumulative number of repurchased shares to total share capital 0%

The cumulative amount of repurchase is 00,000 yuan

The actual repurchase price range is 0 yuan/share~0 yuan/share

1. Basic information on the repurchase of shares

Shanghai Haohai Biotechnology Co., Ltd. (hereinafter referred to as the "Company") was convened on August 16, 2024

The 25th meeting of the fifth session of the board of directors deliberated and passed the "Proposal on the Second Phase of the Repurchase of the Company's A Shares by Centralized Bidding Transaction", and agreed that the company will repurchase the company's A shares by centralized bidding transaction, and the repurchased A shares are intended to be used for employee stock ownership plans or equity incentives, with a total repurchase fund of not less than 10,000.00 yuan (inclusive) and no more than 20,000.00 yuan (inclusive), and the repurchase price shall not exceed 89.71 yuan per share, and the repurchase period will not exceed 89.71 yuan per share

Within 12 months from the date of approval of the share repurchase plan by the Board of Directors. Details are detailed in the company's August 2024 statement

On the 17th, the "Shanghai Haohai Biotechnology Co., Ltd. on the second phase of the repurchase of the company's A shares by centralized bidding transaction plan and repurchase report" disclosed on the website of the Shanghai Stock Exchange (www.sse.com.cn).

(Announcement No. 2024-042).

2. Progress of share repurchases

According to the Rules for Share Repurchase of Listed Companies, the Self-Regulatory Guidelines for Listed Companies on the Shanghai Stock Exchange No. 7 - Repurchase of Shares, and other relevant regulations, the company shall announce the progress of the repurchase as of the end of the previous month within the first three trading days of each month during the repurchase period. The progress of the company's repurchase of A shares is hereby announced as follows:

As of September 30, 2024, the Company has not implemented the second phase of share buybacks.

III. Other Matters

The company will strictly follow the "Rules for Share Repurchase of Listed Companies", "Shanghai Stock Exchange Self-Regulatory Guidelines for Listed Companies No. 7 - Repurchase of Shares" and other relevant regulations, within the repurchase period according to market conditions to make repurchase decisions and implement them, and at the same time timely fulfill the obligation of information disclosure according to the progress of the repurchase of shares, please pay attention to the investment risks.

The announcement is hereby made.

Board of Directors of Shanghai Haohai Biotechnology Co., Ltd

October 10, 2024