Shanghai Rontai Health Technology Co., Ltd. Announcement on the Progress of Share Repurchase

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Security code: 603579 Stock short name: Rongtai Health Announcement No.: 2026-019

Shanghai Rongtai Health Technology Co., Ltd.

Announcement on Progress of Share Repurchase

The board of directors of the Company and all its directors warrant that the contents of this announcement contain no false statements, misleading information or material omissions, and assume legal responsibility for the truthfulness, accuracy and completeness of the content.

Key matters to note:

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I. Basic information on the share repurchase

On March 30, 2026, the Seventh Meeting of the Fifth Session of the Board of Directors of Shanghai Rongtai Health Technology Co., Ltd. (the “Company,” as defined below) considered and approved the Proposal on Protecting the Value of the Company and the Rights and Interests of Shareholders and Repurchasing the Company’s Shares by Centralized Competitive Trading. It was agreed that the Company will repurchase its shares by using its own funds through centralized competitive trading, and that all repurchased shares will be used to protect the value of the Company and the rights and interests of shareholders; subsequently, the repurchased shares will be sold using centralized competitive trading. The total repurchase amount shall be no less than RMB 50M (inclusive) and no more than RMB 100M (inclusive). The repurchase price shall not exceed RMB 33.00 per share (inclusive). The repurchase period shall be within 3 months from the date on which the board considered and approved the share repurchase plan. For details, see the Company’s “Repurchase Report on Protecting the Value of the Company and the Rights and Interests of Shareholders and Repurchasing Shares by Centralized Competitive Trading” disclosed on March 31, 2026 (Announcement No.: 2026-017).

II. Progress of the share repurchase

Pursuant to relevant provisions including the “Rules on Repurchasing Shares of Listed Companies” and the “No. 7 Self-Regulatory Guidance of the Shanghai Stock Exchange for Listed Companies—Repurchasing Shares,” during the share repurchase period, the Company shall disclose the progress of repurchasing shares as of the end of the previous month within the first 3 trading days of each month. The progress of the Company’s share repurchase as of the end of the previous month is hereby announced as follows:

In March 2026, through centralized competitive trading, the Company has cumulatively repurchased 215,600 shares, accounting for 0.11% of the Company’s total share capital (201,052,364 shares). The highest purchase price was RMB 20.15 per share and the lowest purchase price was RMB 19.96 per share. The total amount paid was RMB 4,325,177.00 (excluding transaction fees).

As of March 31, 2026, the Company has cumulatively repurchased 215,600 shares, accounting for 0.11% of the Company’s total share capital (201,052,364 shares). The highest purchase price was RMB 20.15 per share and the lowest purchase price was RMB 19.96 per share. The total amount paid was RMB 4,325,177.00 (excluding transaction fees).

This share repurchase complies with relevant laws and regulations and the requirements of the Company’s share repurchase plan.

III. Other matters

The Company will strictly comply with relevant provisions including the “Rules on Repurchasing Shares of Listed Companies” and the “No. 7 Self-Regulatory Guidance of the Shanghai Stock Exchange for Listed Companies—Repurchasing Shares,” make repurchase decisions and implement them in a timely manner based on market conditions within the repurchase period, and at the same time fulfill its information disclosure obligations in a timely manner according to the progress of the share repurchase matters. Investors are kindly requested to pay attention to investment risks.

This announcement is hereby issued.

Board of Directors of Shanghai Rongtai Health Technology Co., Ltd.

April 2, 2026

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