PEGBIO CO-B (02565) has announced that the board lot size for its H shares, each with a par value of RMB 1.00, traded on the Main Board of The Stock Exchange of Hong Kong Limited will be adjusted. The current board lot size of 500 H shares will be changed to 50 H shares per lot. This modification is scheduled to take effect from 9:00 a.m. on Tuesday, March 31, 2026.