Simplified Report on Change of Equity in Shenzhen SeaStar Technology Co., Ltd.

Shenzhen SeaStar Technology Co., Ltd.

Simplified Report on Change of Equity

Company Name: Shenzhen SeaStar Technology Co., Ltd.

Stock Listing Venue: Shenzhen Stock Exchange

Stock Abbreviation: SeaStar Technology

Stock Code: 300333

Information Disclosure Obligor (1): Xinjiang Chaojun Equity Investment Co., Ltd.

Address: No. 2-37, No. 37, North 4th East Road, Shihezi Development Zone, Xinjiang

Nature of Equity Change: Reduction of shares

Information Disclosure Obligor (2): Wei Kaiyan

Correspondence Address: Room 1605, Block C, Shenye Tairan Building, Chegongmiao, Futian District, Shenzhen

Signing Date: August 2026

Statement of Information Disclosure Obligors

The terms or abbreviations used in this section have the same meanings as those defined in the "Definitions" section of this report.

1. The information disclosure obligors have prepared this report in accordance with the Company Law of the People's Republic of China, the Securities Law of the People's Republic of China, the Administrative Measures for the Takeover of Listed Companies, the Standards for the Contents and Formats of Information Disclosure by Companies Offering Securities to the Public No. 15—Report on Change of Equity (hereinafter referred to as "Standard No. 15"), the Standards for the Contents and Formats of Information Disclosure by Companies Offering Securities to the Public No. 16—Report on Acquisition of Listed Companies, and other relevant laws, regulations, and departmental rules.

2. In accordance with the provisions of the Company Law, the Securities Law, the Administrative Measures for the Takeover, and Standard No. 15, this report has fully disclosed the changes in the equity held by the information disclosure obligors in Shenzhen SeaStar Technology Co., Ltd. As of the signing date of this report, except for the shareholding information disclosed herein, the information disclosure obligors have not increased or decreased their equity in Shenzhen SeaStar Technology Co., Ltd. through any other means.

3. The signing of this report by the information disclosure obligors has obtained the necessary authorization and approval, and its performance does not violate or conflict with any terms in the articles of association or internal rules of the information disclosure obligors.

4. This change of equity is conducted based on the information stated in this report. The information disclosure obligors have not entrusted or authorized any other person to provide information not contained in this report or to make any explanation or statement regarding this report.

5. The information disclosure obligors promise that this report does not contain any false records, misleading statements, or major omissions, and they bear individual and joint legal responsibility for its authenticity, accuracy, and completeness.

Table of Contents

1. Statement of Information Disclosure Obligors

2. Table of Contents

3. Definitions

4. Section 1: Introduction to Information Disclosure Obligors

5. Section 2: Purpose of Equity Change and Shareholding Plan

6. Section 3: Method of Equity Change

7. Section 4: Trading of Listed Company Shares in the Previous 6 Months

8. Section 5: Other Major Matters

9. Section 6: Documents Available for Inspection

10. Section 7: Statement of Information Disclosure Obligors

11. Appendix: Simplified Report on Change of Equity

Definitions

Unless the context otherwise requires, the following abbreviations have the following meanings in this report: