The Hong Kong IPO timeline, stage by stage

A Hong Kong listing runs on a calendar that is written backwards. The Listing Rules fix each filing deadline by counting clear business days before the date on which the Listing Committee is expected to hear the application¹. Once a company and its sponsor agree a target hearing date, the rest of the timetable follows from it.

Who is reading the application

Two regulators read every application. The Securities and Futures Commission (SFC), as statutory regulator, administers the Securities and Futures (Stock Market Listing) Rules and the Securities and Futures Ordinance and reviews all new listing applications². The Exchange, as frontline regulator, administers the Listing Rules and decides matters such as suitability for listing². The Listing Committee decides whether to approve the application, raising comments where appropriate on eligibility, suitability and material disclosure in the listing document². The two regulators coordinate closely to avoid duplicating comments². For the applicant, that means one process with two readers.

Stage one: filing Form A1

A new applicant applies for an advance booking on Form A1 not less than 25 clear business days before the expected hearing date¹. The sponsor completes the form, which must be accompanied by the documents listed in Rules 9.11(1) to (3) and the initial listing fee¹. The Exchange treats the date it receives all of the relevant documents through HKEX-ESS as the filing date, and the submission also carries the additional information in Form M104/G104³.

If the applicant delays its timetable and more than six months pass from the date of the advance booking form, the initial listing fee is forfeited, and reactivating the application means a fresh Form A1 and a fresh fee¹. The six-month application validity window is the outer boundary of the whole process².

Stage two: the document tranches

The remaining documents arrive in tranches, each measured in clear business days before the expected hearing date¹:

• Rules 9.11(4) to (6): at least 20 clear business days¹.
• Rules 9.11(7) and (8): at least 15 clear business days¹.
• Rules 9.11(9) to (15): at least 10 clear business days¹.
• Rules 9.11(18) to (23b), with e-Form M112/G112 and e-Form M201/G201 or M501: by 6 p.m. at least four clear business days³.
• The CSRC Notification, where PRC filing procedures apply: at least three clear business days³.
• The final proof of the listing document: at least two clear business days³.

The Exchange's guidance is direct on the point: an applicant and its sponsor must adhere to these submission times to avoid delaying the Listing Committee hearing³. A missed tranche is not a footnote. It moves the hearing.

Stage three: vetting under the Enhanced Application Timeframe

On 18 October 2024 the SFC and the Exchange jointly announced an Enhanced Application Timeframe, which applies to new listing applications filed after that date².

Where an application and its related materials meet all applicable requirements and guidance under the SFO, the SMLR and the Listing Rules, each regulator assesses the application and indicates any material regulatory concerns after a maximum of two rounds of regulatory comments². The time taken by each regulator to confirm whether there are material concerns is no more than 40 business days². That figure counts only the business days in the hands of the regulators and excludes the time the applicant and its sponsor take to respond².

The regulators expect the company and its sponsor to take a total of around 60 business days to address the comments satisfactorily². Once both regulators confirm there is no material regulatory concern, the Exchange works with the applicant and its sponsor to finalise the disclosure in the listing document, and the application moves forward to the Listing Committee hearing². Subject to Listing Committee and other approvals, the process is expected to complete within the six-month application validity window².

An accelerated path exists for an A-share listed company with an expected minimum market capitalisation of HK$10 billion that confirms, supported by a legal opinion, material compliance with the laws applicable to its A-share listing throughout the two full financial years before the application and up to the date of filing². The assessment then completes after one round of comments, with each regulator taking no more than 30 business days². If either regulator identifies material concerns, the accelerated path falls away².

Where the regulators have material concerns, or responses are incomplete, the process lengthens. After the first comment letter they may engage with the applicant's key representatives and advisers to set out their expectations². A materially incomplete response suspends vetting until a complete reply arrives². If concerns remain after two rounds, the SFC and/or the Exchange issue a direct requisition letter under the SMLR and/or a major concerns letter, and progress then depends on addressing those letters².

The defined timeframe is available to applications that are complete and well prepared on the day they are filed. The quality of the first filing sets the pace of everything after it.

Stage four: the hearing and the Post-Hearing Letter

The Listing Committee considers and decides whether to approve the application². When the outcome is favourable, the Exchange issues a Post-Hearing Letter with no objection, and that letter contains a unique FINI case number, known as the FINI Key³.

As soon as practicable after the hearing, and on or before the date the listing document is issued, the applicant supplies four copies of the listing document, one dated and signed by every director or proposed director (or an authorised agent) and by the secretary, with four copies of the formal notice and of any application form¹. Documents under Rules 9.11(31) to (32a), and where applicable 9.11(33), are also due on or before the issue of the listing document³.

Stage five: FINI, from offering to dealings

FINI, the Fast Interface for New Issuance, is the digital platform through which IPO market participants and regulators manage the end-to-end settlement process for new listings in Hong Kong⁴. At any time after receiving the Post-Hearing Letter with no objection, the designated sponsor logs on to the FINI website and enters the FINI Key to initiate an "IPO case", meaning the offering, for clearance by HKSCC³.

FINI modernises the settlement process and shortens the time gap between IPO pricing and trading, giving investors quicker access to new listings, reducing market risk and improving efficiency for the parties involved⁴.

One final set of filings remains. After the listing document is issued but before dealings commence, the applicant submits or publishes the documents under Rules 9.11(35) to (39), together with a ready-to-publish electronic copy of the prospectus and any application forms for the Exchange's website³.

The next step

Sit down with the sponsor and choose a target hearing date. Count back 25 clear business days¹. Put that date in the diary as the day Form A1, the Rule 9.11(1) to (3) documents and the initial listing fee go to the Exchange¹, and ask the sponsor for the tranche calendar that hangs from it.

Next in this stage: Hong Kong IPO demand and pricing: what the market data shows

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