The institution that keeps the register of members and handles share transfers; in an IPO it also processes public offering applications, removes duplicate or invalid applications and helps run the ballot. The detailed allotment list is compiled by the registrar, and Cibo's allottee profile is parsed from the registrar's allotment file.
The links above lead to official sources such as HKEX and the SFC. The explanation on this site summarises them and may differ from the official definition; the official documents prevail.
This page explains the HK IPO term "H Share Registrar" and links to related terms. Definitions are compiled from HKEX Practice Note 18 and the Listing Rules, for understanding subscription rules only — not investment advice.