-- Announcement on Completion of Shareholding Reduction Plan for Shareholders with Over 5% Shares and Results of Shareholding Reduction

Securities code: 603367 Securities abbreviation: Chenxin Pharmaceutical Announcement number: 2025-054

Chenxin Pharmaceutical Co., Ltd.

Announcement on the completion of the share reduction plan and the results of the share reduction for shareholders holding more than 5% of the shares

The company's board of directors, all directors and relevant shareholders guarantee that the contents of this announcement do not contain any false records, misleading statements or major omissions, and assume legal responsibility for the authenticity, accuracy and completeness of its contents.

Important content reminder:

 Basic information on shareholdings of shareholders holding more than 5% of the shares

Before the implementation of this shareholding reduction plan, Shijiazhuang No.4 Pharmaceutical Co., Ltd. (hereinafter referred to as "Shijiazhuang No.4"), a shareholder holding more than 5% of the shares of Chenxin Pharmaceutical Co., Ltd. (hereinafter referred to as the "Company" or "Chenxin Pharmaceutical"), held 27,661,441 unrestricted tradable shares of Chenxin Pharmaceutical, accounting for 6.11% of the total share capital of Chenxin Pharmaceutical. The sources of the aforementioned shares are shares obtained by Shisiyao through agreement transfer.

 Implementation results of the shareholding reduction plan

The company disclosed the "Announcement of Chenxin Pharmaceutical Co., Ltd.'s Plan to Reduce Shareholdings by Shareholders Holding More than 5% of the Shares" (Announcement Number: 2025-047) on August 30, 2025. Shisiyao plans to reduce its shareholdings by a total of no more than 1.00% of the company's total shares (i.e. no more than 4,527,000 shares) through centralized bidding transactions.

On September 23, 2025, the company received the "Notification Letter of Share Reduction" issued by Shi Siyao, a shareholder holding more than 5% of the shares, and learned that it had reduced its holdings of 1,00,000 shares of the company through centralized bidding transactions on September 22, 2025, accounting for 0.221% of the company's current total share capital. After this equity change, the total number of company shares held by Shisiyao decreased from 27,661,441 shares to 26,661,441 shares, and the total shareholding ratio decreased from 6.11% to 5.89%. The equity change touched an integral multiple of the 1% scale.

On September 24, 2025, the company received the "Letter of Notification of Share Reduction Result" issued by Shi Siyao. As of September 24, 2025, Shi Siyao had reduced its holdings of 4,520,000 shares of the company through centralized bidding transactions, accounting for 0.998% of the company's total share capital. This shareholding reduction plan has been completed.

1. Basic situation of the subject before reducing its holdings

Shareholder name Shijiazhuang No. 4 Pharmaceutical Co., Ltd.

Controlling shareholders, actual controllers and persons acting in concert Yes √ No

Shareholders who directly hold more than 5% of the shares √ Yes □ No shareholder status

Directors, supervisors and senior managers Yes √ No Others:

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Number of shares held: 27,661,441 shares

Shareholding ratio 6.11%

Source of current shareholding: Acquired through transfer agreement: 27,661,441 shares

There is no concerted action in the above-mentioned reduction of holdings.

2. Implementation results of the shareholding reduction plan

(1) Shareholders holding more than 5% of the shares disclose the results of the implementation of the shareholding reduction plan due to the following matters:

The reduction plan has been implemented

Name of shareholder Shijiazhuang No. 4 Pharmaceutical Co., Ltd. First disclosure date of shareholding reduction plan August 30, 2025

Number of shares reduced: 4,520,000 shares

Holding reduction period: September 22, 2025 to September 23, 2025. Holding reduction method and corresponding reduction number

Reduce holdings through centralized bidding, 4,520,000 shares

Price range for reduction of holdings: 19.70-21.17 yuan/share Total amount of reduction: 91,220,564.00 yuan

Completion status of shareholding reduction Completed

Reduction ratio 0.998%

The original planned shareholding reduction ratio shall not exceed: 1%

Current number of shares held: 23,141,441 shares

Current shareholding ratio 5.11%

(2) Is the actual situation of this reduction consistent with the previously disclosed reduction plan and commitment? √ Yes □ No

(3) When the holding reduction time interval expires, has the holding reduction been implemented? □ Not implemented √ Implemented

(4) Whether the actual reduction has not reached the minimum reduction amount (proportion) of the reduction plan □ Not reached √ Reached

(5) Whether to terminate the shareholding reduction plan in advance □ Yes √ No

Announcement is hereby made.

Board of Directors of Chenxin Pharmaceutical Co., Ltd.

September 24, 2025