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Asymchem Laboratories (Tianjin) Co., Ltd. Asymchem Pharmaceutical Group (Tianjin) Co., Ltd.

(a joint stock limited company incorporated in the People's Republic of China) (Stock code: 6821)

Overseas regulatory announcement

This overseas regulatory announcement is made by the Company in accordance with Rule 13.10B of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited.

The full Chinese text of the following information published by the Company on the Shenzhen Stock Exchange website is hereby provided for reference only.

By order of the board of directors

Asymchem Pharmaceutical Group (Tianjin) Co., Ltd. Dr. Hao Hong Chairman, Executive Director and Chief Executive Officer

Tianjin, China, July 8, 2026

As of the date of this announcement, the Company’s Board of Directors consists of Dr. Hao Hong, Chairman and Executive Director, and Ms. Yang Rui, Executive Director.

, Mr. Zhang Da and Mr. Hong Liang, non-executive directors Dr. Ye Song and Ms. Zhang Ting, and independent non-executive director Sun Composed of Dr. Xuejiao, Dr. Hou Xinyi and Mr. Xie Weikai.

Asymchem Pharmaceutical Group (Tianjin) Co., Ltd.

Measures for the Implementation Assessment and Management of the A-Share Restricted Stock Incentive Plan in 2026

In order to ensure that Asymchem Pharmaceutical Group (Tianjin) Co., Ltd. (hereinafter referred to as the "Company") equity incentives The smooth progress of the incentive plan will further improve the company's corporate governance structure and form a good and balanced value distribution system.

relationship, encourage the company's core team to work honestly and diligently, ensure the steady improvement of the company's performance, and ensure that the company's

To achieve development strategies and business objectives, these measures are specially formulated based on relevant national regulations and the actual situation of the company.

1. Assessment purpose

Further improve the company's corporate governance structure, establish and improve the company's incentive and restraint mechanism, and ensure that equity incentives ensure the smooth implementation of the incentive plan and maximize the role of equity incentives to ensure the company’s development strategy

the achievement of strategy and business objectives.

2. Assessment principles

Assessment and evaluation must adhere to the principles of impartiality, openness and fairness, and strictly comply with these measures and the characteristics of the assessment objects.

performance evaluation to achieve a close integration between the equity incentive plan and the work performance and contributions of the incentive targets, thereby Improve management performance and maximize the interests of the company and all shareholders.

3. Scope of assessment

This method applies to all incentive objects participating in the company’s restricted stock incentive plan, including the company

(1) Middle managers and core technologies (business) working in the company (including subsidiaries) when the plan was announced

Personnel, (2) Directors, supervisors and general managers serving in the company's subsidiaries when the company announces the plan. 4. Assessment institutions

The Remuneration and Assessment Committee of the company's board of directors is responsible for leading and organizing assessment work, and is responsible for equity incentives.

Objects are assessed.

5. Performance evaluation indicators and standards

(1) Company-level performance appraisal requirements

1. The annual performance assessment targets for the restricted stocks granted for the first time are as follows:

Based on operating income in 2025 Based on net profit in 2025

The sales restriction period is lifted and the corresponding assessment year is the annual operating income growth rate and the net profit growth rate.

(Performance Appraisal Objective A) (Performance Appraisal Objective B)

Am An Bm Bn

first award department The first solution is 2026 15.00% 10.00% 15.00% 10.00%

Excluding restricted sale period first award department The second solution is 2027 30.00% 20.00% 30.00% 20.00% Excluding restricted sale period

first award department The third solution is 2028 40.00% 30.00% 40.00% 30.00% Excluding restricted sale period first award department The fourth solution is 2029 50.00% 40.00% 50.00% 40.00%

Excluding restricted sale period Note 1: The above "operating income" is operating income calculated at a constant exchange rate and excludes the scope of consolidation caused by mergers, acquisitions, reorganizations or asset divestitures. The impact of changes on income is used as the basis for calculation, the same below. (Constant exchange rate refers to: average exchange rate of operating income in 2025) Note 2: The above "net profit in 2025" and "net profit growth rate" are based on the net profit attributable to shareholders of listed companies after deducting non-recurring gains and losses.

The data excludes the impact of gains and losses related to exchange rate fluctuations and the incentive costs incurred by the implementation of this plan and other equity incentive plans or employee stock ownership plans. is the basis for calculation, the same below. 2. If the reserved part is awarded before the disclosure of the third quarterly report of 2026, the reserved part will be awarded to some company-level businesses.

The performance assessment is consistent with the company-level performance assessment of the first-time grant; if the reserved part is disclosed in the third quarter report of 2026

If the restricted stock is granted after disclosure, the performance appraisal year for the reserved restricted stock is the four fiscal years from 2027 to 2030.

The specific performance appraisal objectives are as shown in the table below:

Based on operating income in 2025 Based on net profit in 2025 Annual operating income growth rate Net profit growth rate The sales restriction period is lifted corresponding to the assessment year (Performance Appraisal Objective A) (Performance Appraisal Objective B)

Am An Bm Bn

Department of Reserved Grants The first solution is 2027 30.00% 20.00% 30.00% 20.00% Excluding restricted sale period

Department of Reserved Grants The second solution is 2028 40.00% 30.00% 40.00% 30.00% Excluding restricted sale period Department of Reserved Grants

The third solution is 2029 50.00% 40.00% 50.00% 40.00% Excluding restricted sale period Department of Reserved Grants The fourth solution is 2030 60.00% 50.00% 60.00% 50.00% Excluding restricted sale period

Based on the completion of the assessment targets of the above indicators in each year, the proportion of sales restrictions that can be lifted at the company level in each period (X)

Linked to the assessment of annual operating income growth rate (A) and net profit growth rate (B), the specific lifting of sales restrictions

The proportions are arranged as follows:

Assessment Indicators Performance Completion Level Assessment Indicators Corresponding to Sales Restriction Lifting Ratio (X) A≥Am or B≥Bm X=100% Assessment of annual operating income growth rate (A) An≤A<Am or Bn≤B<Bm X=75% Or assess annual net profit growth rate (B) A<An and B<Bn X=0

Explanation for calculation of the proportion of sales restrictions lifted at the company level: The proportion of sales restrictions lifted at the company level is calculated by the increase in the company's operating income.

The company partially satisfies the unlocking ratio corresponding to the performance completion rate of the growth rate and net profit growth rate, whichever is higher.

Or if the above performance assessment indicators are not met, the incentive target has been granted the restriction that the sales restriction cannot be lifted in the corresponding assessment year. Mandatory stocks are repurchased and canceled by the company at the grant price.

(2) Performance appraisal requirements at the individual level for incentive targets

According to the company's management personnel performance/KPI assessment management methods, employees are evaluated every time sales restrictions are lifted.

The performance appraisal results of the previous year correspond to the four grades A, B, C, and D, and the sales restriction lifting coefficient is obtained.

Assessment and evaluation form

Evaluation result Excellent Good Qualified Unqualified Evaluation level A B C D

Coefficient of lifting sales restrictions 1.0 0.8 0.6 0

Note: The actual proportion of sales restrictions lifted = the proportion of sales restrictions lifted at the company level × the coefficient of sales restrictions lifted at the individual level ×

It is planned to lift the upper limit of sales restriction ratio that year. The incentive objects’ restricted stock shares that cannot be released from sale in the current year shall be assessed.

The shares are repurchased and canceled by the company, and the repurchase price is the grant price.

6. Assessment procedures The company's Human Resources Department is responsible for specific assessment work under the guidance of the Remuneration and Assessment Committee of the Board of Directors.

Save the assessment results and form a performance assessment report based on this and submit it to the Remuneration and Appraisal Committee of the Board of Directors.

7. Assessment results management

8. Feedback and appeals on assessment results

Appraisal subjects have the right to know their own assessment results. The direct supervisor of the subject to be assessed should report the results at the end of the assessment work. The assessment results will be notified to the assessment subject within 5 working days after the end of the assessment.

If the assessment subject has objections to his or her assessment results, he or she can communicate with the Human Resources Department to resolve the issue. If nothing

The subject of the assessment can appeal to the Salary and Appraisal Committee, and the Salary and Appraisal Committee must

A review will be conducted within 10 working days and the final assessment result or grade will be determined.

2. Archiving of assessment results After the assessment is completed, the assessment results will be archived and saved as confidential information.

3. Supplementary Provisions

4. The Board of Directors is responsible for formulating, interpreting and revising these Measures. If these measures are inconsistent with laws promulgated and implemented in the future,

If there is a conflict between laws, administrative regulations and departmental rules, the laws, administrative regulations and departmental rules issued and implemented in the future shall prevail.

The regulations of the door shall prevail. 2. This method has been reviewed and approved by the company’s shareholders’ meeting and will be implemented after the equity incentive plan takes effect.

Asymchem Pharmaceutical Group (Tianjin) Co., Ltd. board of directors

July 8, 2026