Longbio-B (SEHK: 01779) has announced the conclusion of the share price stabilization period for its global offering.

The stabilization period ended on Thursday, July 2, 2026, which marks 30 days after the deadline for submitting applications for the Hong Kong public offering.

The actions taken by the stabilizing manager, Guojin Securities (Hong Kong) Company Limited, or any of its affiliates or persons acting on its behalf, during the stabilization period are detailed as follows.

First, a total of 2,128,950 H shares were overallotted in the international offering, representing approximately 15% of the total number of shares initially available for subscription under the global offering before any over-allotment option was exercised.

Second, the sole sponsor and overall coordinator, acting for itself and on behalf of the international underwriters, fully exercised the over-allotment option on Tuesday, June 30, 2026, at an H share price of HK$96.06.

This exercise involved a total of 2,128,950 H shares and was undertaken to facilitate the delivery of a portion of H shares to placees who had agreed to delay delivery of their relevant H shares subscribed for under the global offering.

Throughout the stabilization period, the stabilizing manager did not purchase or sell any H shares in the market for the purpose of price stabilization.