The Hong Kong Securities and Futures Commission (SFC) issued a circular setting out serious deficiencies identified in some IPO listing documents and related regulatory submissions, alongside concerns about sponsors’ potential misconduct and resource mismanagement during a surge in new listing applications in 2025. The circular directs sponsors to carry out internal remediation and introduces new reporting and escalation measures, including the possibility of suspending vetting where responses are materially incomplete or unsatisfactory. Recent reviews by the SFC and The Stock Exchange of Hong Kong Limited found shortcomings in listing documents, responses to regulatory comments and adherence to key offer-stage processes, indicating that some sponsors may not sufficiently understand listing applicants or may have failed to perform reasonable due diligence. The SFC also highlighted resourcing problems such as over-reliance on external professional parties without adequate assessment, insufficient capacity of sponsor principals to supervise transaction teams, and a lack of staff with appropriate Hong Kong IPO experience. Thirteen sponsors that received a joint letter from the SFC and the exchange in December 2025, and sponsors with strained resources, must complete comprehensive reviews of the specific concerns raised and of their resources for sponsor work within three months. Across the market, sponsors must report (i) the ratio of active listing engagements to appointed sponsor principals and (ii) any IPO sponsor staff who have not passed the required examination within the prescribed timeframe; the SFC also plans a thematic review. For current applications, vetting may be suspended for materially incomplete or unsatisfactory responses or unreasonably lengthy listing documents, and as at 31 December 2025, 16 applications had been suspended with the SFC indicating it will notify regulatory counterparts. Sponsors whose sponsor principals simultaneously supervise or participate in six or more active engagements must submit a viable rectification and resource plan, tightened examination requirements now apply to all individuals engaging in IPO sponsor work, and the SFC may restrict business scope and limit the number of active engagements for sponsors whose work remains unsatisfactory.