Ningbo Hongxun Technology Co., Ltd. - Announcement on the Indicative Notice of Changes in Equity Interests of the Controlling Shareholder's Concerted Parties Reaching the 5% Threshold

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Stock Code: 603015 Stock Abbreviation: Hongxun Technology Announcement No.: 2026-006

Ningbo Hongxun Technology Co., Ltd.

Notice of Changes in Equity of the Controlling Shareholder’s Concerted Action Party Reaching 5% Threshold

The company’s controlling shareholder’s concerted action party, Ningbo Bangbang Trade Co., Ltd., guarantees that the information provided to the company is true, accurate, and complete, with no false records, misleading statements, or major omissions.

The company’s board of directors and all directors guarantee that the content of this announcement is consistent with the information provided by the information disclosure obligor.

Important Content Reminder:

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1. Basic information of the information disclosure obligor and its concerted action parties

2. Identity category

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2. Information of the information disclosure obligor

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3. Information of the concerted action parties

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2. Basic situation of equity change reaching 5% threshold

On March 18, 2026, the company received a “Simplified Equity Change Report” from one of its controlling shareholders’ concerted action parties, Ningbo Bangbang Trade Co., Ltd. (hereinafter referred to as “Ningbo Bangbang”), and learned that from February 3, 2026, to March 18, 2026, Ningbo Bangbang reduced its holdings by a total of 8,084,400 shares through centralized bidding and block trades, accounting for 2% of the company’s total shares.

After this equity change, the total shareholding of the company by Ningbo Bangbang and its concerted action parties decreased from 52.00% to 50.00%, reaching the 5% threshold. The specific situation is as follows:

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3. Other explanations

4. This equity change is a fulfillment of the previously disclosed share reduction plan on December 31, 2025, on the Shanghai Stock Exchange website (www.sse.com.cn) (see “Announcement of Share Reduction Plan by One of the Controlling Shareholders’ Concerted Action Parties,” Announcement No.: 2025-044). It does not involve a tender offer. The current reduction is consistent with the plan and commitments previously disclosed by the shareholder. As of the date of this announcement, the share reduction plan has not yet been completed.

5. This equity change will not result in a change of the company’s controlling shareholder or actual controller, nor will it have a significant impact on the company’s governance structure or ongoing operations.

6. After this equity change, the information disclosure obligor is still within the period of implementing its share reduction plan. The company will continue to monitor the progress of the reduction plan and fulfill its information disclosure obligations in accordance with relevant regulations. Investors are advised to pay attention to investment risks.

7. According to the “Securities Law of the People’s Republic of China,” “Administrative Measures for the Acquisition of Listed Companies,” “Opinions on the Application of Securities and Futures Laws No. 19—Articles 13 and 14,” and other relevant regulations, this equity change involves the information disclosure obligor disclosing a simplified equity change report. The specific content is detailed in the “Simplified Equity Change Report” published on the same day on the Shanghai Stock Exchange website and designated information disclosure media.

This announcement is hereby made.

Board of Directors of Ningbo Hongxun Technology Co., Ltd.

March 19, 2026

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