CiDi Inc. — Share Issue/Capital Change 2026

Feb 10, 2026

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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.

(A joint stock company incorporated in the People's Republic of China with limited liability)

(Stock Code: 3881)

ANNOUNCEMENT UPDATE ON THE EXPECTED TIMETABLE FOR THE PROPOSED SHARE SUBDIVISION AND EXCHANGE OF SHARE CERTIFICATES

Reference is made to the announcement of the Company dated January 27, 2026 (the "Announcement") and the circular of the EGM (the "Circular") in relation to, among other matters, the proposed Share Subdivision and the corresponding amendments to the Articles of Association, and the proposed Change in Board Lot Size. Unless otherwise defined, capitalized terms used in this announcement shall have the same meanings as those defined in the Announcement and the Circular.

The Company has recently been informed that, due to the holiday schedule in Mainland China, the relevant transfer, settlement, and share certificate exchange procedures are expected to be unable to be completed by the originally scheduled date (i.e., February 20, 2026). Therefore, the Company intends to update the effective date of the Share Subdivision to March 2, 2026. The expected timetable for matters related to the Share Subdivision becoming effective will be correspondingly adjusted. Please refer to the updated specific timetable below. The relevant dates concerning the aforementioned timetable in the Announcement and the Circular will be revised accordingly to align with this announcement.

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The revised expected timetable for the implementation of the Share Subdivision and the Change in Board Lot Size is set out below:

	Original timetable	Revised timetable 2026
The deadline for existing share certificates to be effectively delivered, traded, and settled	12:00 noon on February 16	4:10 p.m. on February 27
Effective date of the Share Subdivision	February 20	March 2
Dealings in Subdivided Shares commence	9:00 a.m. on February 20	9:00 a.m. on March 2
Original counter for trading in H Shares in board lots of 10 Shares temporarily closes	9:00 a.m. on February 20	9:00 a.m. on March 2
Temporary counter for trading in Subdivided H Shares (in the form of existing share certificate) in board lots of 100 Subdivided H Shares opens	9:00 a.m. on February 20	9:00 a.m. on March 2
First day for free exchange of existing share certificates for new share certificates for Subdivided Shares commences	February 20	March 2
Original counter for trading in Subdivided H Shares in board lots of 100 Subdivided H Shares (in the form of new share certificates) reopens	9:00 a.m. on March 6	9:00 a.m. on March 16
Parallel trading in Subdivided H Shares (in the form of existing share certificates and new share certificates) commences	9:00 a.m. on March 6	9:00 a.m. on March 16
Temporary counter for trading in Subdivided H Shares in board lots of 100 Subdivided H Shares (in the form of existing share certificates) closes	4:10 p.m. on March 26	4:10 p.m. on April 8
Parallel trading in Subdivided H Shares (in the form of new and existing share certificates) ends	4:10 p.m. on March 26	4:10 p.m. on April 8
Free exchange of existing share certificates for new share certificates ends	March 30	April 10

Note: All times and dates in this announcement refer to Hong Kong local times and dates.

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Save as disclosed above, all other information as set out in both the English and Chinese versions of the Announcement and the Circular remain unchanged. The Circular, the notice of the EGM and the form of proxy of the Company dated January 27, 2026 shall remain valid and applicable for the EGM or any adjournment thereof. This announcement is supplemental to and shall be read in conjunction with the Announcement and the Circular.

The Company hereby reminds that all full circulation shareholders of the Company (i.e. shareholders holding unlisted domestic Shares prior to the listing of the Company, which were converted into H Shares upon listing of the Company) can not purchase or sell their Shares from the effective date of the Share Subdivision until the beginning of parallel trading of the subdivided H Shares (in the form of new and existing Shares), and shall continue to be subject to the restriction of non-transfer within 12 months from the listing date of the Company.

By order of the Board CiDi Inc. Dr. Albert S. Hu Executive Director and Chief Executive Officer

Hong Kong, February 10, 2026

As at the date of this announcement, the executive Directors of the Company are Dr. Ma Wei and Dr. Albert S. Hu; the non-executive Directors are Prof. Li Zexiang, Ms. Yang Xi and Dr. Li Zhiyong; and the independent non-executive Directors are Dr. Li Xiaoyuan, Prof. Tan Guangrong and Mr. Zhang Jiangang.