Exhibit 99.1

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

Under our weighted voting rights structure, our share capital comprises Class A ordinary shares and Class B ordinary shares. Each Class A ordinary share entitles the holder to exercise one vote, and each Class B ordinary share entitles the holder to exercise ten votes, respectively, on any resolution tabled at our general meetings, except as may otherwise be required by law or by the Rules Governing the Listing of Securities on the Stock Exchange of Hong Kong Limited (the “Listing Rules”) or provided for in our memorandum and articles of association. Shareholders and prospective investors should be aware of the potential risks of investing in a company with a weighted voting rights structure. Our American depositary shares, each representing three of our Class A ordinary shares, are listed on the Nasdaq Global Select Market in the United States under the symbol BZUN.

Baozun Inc.

寶尊電商有限公司*

(A company controlled through weighted voting rights and incorporated in the Cayman Islands with limited liability)

(Stock Code: 9991)

GRANT OF RESTRICTED SHARE UNIT AWARDS

Baozun Inc. (the “Company”, together with its consolidated subsidiaries and its affiliated consolidated entities, the “Group”) hereby announces that on May 21, 2026 (Hong Kong time), the Company granted and proposed to grant restricted share unit awards (the “RSUs”) under the 2022 share incentive plan of the Company (the “2022 Plan”) to certain grantees (the “Grantees”), the details of which are set forth as follows:

The RSUs are subject to the terms and conditions of the 2022 Plan and award agreements applicable to the Grantees. Details of the 2022 Plan are set out in Appendix IV – The 2022 Plan of the circular of the Company dated October 5, 2022.

Each of the grant of RSUs to the Directors forms part of his/her remuneration package under his/ her service contract with the Company. In respect of the three independent Directors, the grant of RSUs is intended to retain and motivate them to continue to provide their advice and judgement to the Board for the Company’s long-term development. The Board does not consider that the grant would affect the independence of the three independent Directors pursuant to Rule 3.13 of the Listing Rules.

Pursuant to Rule 17.04(1) of the Listing Rules, the grant of RSUs to the above Directors has been approved by the Board (including the independent Directors), save that each Director has abstained from voting on the relevant resolutions in relation to the grant of RSUs to himself/herself.

As of the date of this announcement, 2 Shares remained available for future grants under the 2022 Plan in accordance with the terms of the 2022 Plan, of which 2 Shares are available for future grants to the service providers.

Hong Kong, May 21, 2026

As at the date of this announcement, our board of directors comprises Mr. Vincent Wenbin Qiu as the chairman, Mr. Junhua Wu, Dr. Jun Wang and Ms. Bin Yu as directors, and Mr. Yiu Pong Chan, Mr. Steve Hsien-Chieng Hsia and Mr. Benjamin Changqing Ye as independent directors.