-- Announcement on Results of Shareholding Reduction by Senior Management Members

Securities code: 603590 Securities abbreviation: Kangchen Pharmaceutical Announcement number: Lin 2025-055

Beijing Kangchen Pharmaceutical Co., Ltd.

Announcement on the Result of Share Reduction by Senior Management

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 situation of senior management’s shareholdings

Before the implementation of this shareholding reduction plan, Niu Zhanqi, a senior manager of Beijing Kangchen Pharmaceutical Co., Ltd. (hereinafter referred to as the "Company"), held 350,000 shares of the company, accounting for 0.2196% of the company's total share capital.  Implementation results of the shareholding reduction plan

As of the date of this announcement, the company's senior manager Niu Zhanqi has reduced its holdings of 87,500 shares of the company through centralized bidding transactions, accounting for 0.0549% 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 Niu Zhanqi

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:/

Number of shares held: 350,000 shares

Shareholding ratio 0.2196%

Source of current shareholding: Equity incentive acquisition: 350,000 shares

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

2. Implementation results of the shareholding reduction plan

(1) Senior managers disclose the results of the implementation of the shareholding reduction plan due to the following matters:

The reduction plan has been implemented

Shareholder name Niu Zhanqi

The first disclosure date of the shareholding reduction plan is August 28, 2025

Number of shares reduced: 87,500 shares

Holding reduction period: September 18, 2025 to September 29, 2025. Holding reduction method and corresponding reduction number

Reduce holdings through centralized bidding, 87,500 shares

The price range for reduction is 52.72-59.25 yuan/share

The total amount of reduction is 4,934,779 yuan

Completion status of shareholding reduction Completed

Reduction ratio 0.0549%

The original planned shareholding reduction ratio shall not exceed: 0.0549%

Current number of shares held: 262,500 shares

Current shareholding ratio 0.1647%

(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 Beijing Kangchen Pharmaceutical Co., Ltd.

October 1, 2025