Quiet Period Compliance for Hong Kong IPOs: Practical Dos and Don'ts

The SFC’s enforcement division has, since 2023, issued at least four formal reprimands and two penalty notices directly tied to breaches of the quiet period provisions under the Code of Conduct for Persons Licensed by or Registered with the SFC (the “Code of Conduct”), signalling a marked escalation in scrutiny of pre-IPO communications. For CFOs and company secretaries preparing a Hong Kong Main Board or GEM listing, the quiet period — the interval between the filing of the listing application (Form A1) and the formal commencement of the marketing process — is no longer a procedural footnote. It is a regulatory minefield where a single analyst briefing, a media interview, or an investor roadshow slide can trigger an SFC investigation, delay the listing timetable, or expose the sponsor and the issuer to disciplinary action. The HKEX Listing Rules (specifically Rules 11.05 to 11.09 and the associated guidance letters) impose strict prohibitions on the dissemination of “any information that may influence the market’s perception of the applicant” during this period. With the SFC’s 2024 revised guidance on pre-deal research and the HKEX’s December 2024 update to its Listing Decision on selective disclosure, the boundaries of permissible communication have narrowed further. This article provides a practical, rule-by-rule compliance framework for the 2025-2026 listing cycle.

The Regulatory Architecture: What Constitutes the Quiet Period and Why It Matters

The quiet period for a Hong Kong IPO is not a single, uniform window. It comprises two distinct phases, each governed by different provisions of the Listing Rules and the Code of Conduct.

Phase One: From Filing to the Post-Hearing Information Pack (PHIP)

The first phase begins upon submission of the A1 application to the HKEX. Under HKEX Listing Rule 11.05, the issuer and its directors, officers, and agents are prohibited from publishing or distributing any material relating to the listing application until the HKEX has completed its review and issued the PHIP. This prohibition covers not only formal prospectuses but also any research reports, press releases, or investor presentations that contain financial projections, valuation estimates, or forward-looking statements about the applicant.

The HKEX’s Guidance Letter HKEX-GL86-16 (updated March 2024) clarifies that “any communication that could reasonably be expected to influence the market’s understanding of the applicant’s business, financial condition, or prospects” falls within this prohibition. This includes social media posts, blog entries, and even internal analyst notes that may be leaked to the press. The SFC’s 2023 enforcement action against a sponsor firm for permitting the circulation of an “unpublished preliminary research report” during this phase resulted in a fine of HKD 3.5 million and a six-month suspension of the sponsor’s ability to act on new listing applications.

Phase Two: From PHIP to Listing Date

The second phase runs from the PHIP issuance to the actual listing date. During this period, the issuer may engage in “pre-deal research” (PDR) under the SFC’s Code of Conduct paragraph 16.3, but only through a strictly controlled process. The PDR must be conducted by the sponsor or a designated co-manager, and the research must be “fair, balanced, and not misleading” (Code of Conduct paragraph 16.3(b)). The HKEX Listing Decision LD117-2024 further requires that any PDR distributed to institutional investors must be filed with the HKEX within 24 hours of distribution.

A common compliance failure here is the “selective briefing” — a private meeting with a single fund manager or analyst where the issuer discloses non-public information. The SFC’s 2024 revised guidance on selective disclosure explicitly states that any communication of material non-public information to a select group of investors during the quiet period constitutes a breach of the Code of Conduct, regardless of whether the information is favourable or unfavourable to the issuer.

Practical Do’s and Don’ts for the Pre-Filing Period (Before A1 Submission)

The quiet period technically begins upon A1 submission, but the SFC and HKEX have made clear that preparatory activities — such as drafting the prospectus, conducting due diligence, and preparing investor materials — must be conducted with the quiet period rules in mind from the outset.

Do: Establish a Written Communication Policy

The issuer should adopt a formal “IPO Communication Policy” approved by the board before the A1 filing. This policy must define who is authorised to speak on behalf of the company, what topics are permissible (e.g., historical financial results already publicly filed, general industry trends), and what topics are prohibited (e.g., financial projections, valuation range, listing timetable). The policy should also mandate that all external communications — including emails, phone calls, and social media posts — be routed through a designated compliance officer.

The SFC’s 2023 enforcement case against a technology issuer demonstrated the consequences of failing to have such a policy. The issuer’s CEO gave a media interview two weeks after the A1 filing in which he discussed the company’s “strong pipeline of new products” and “expected revenue growth of 30% in the next financial year.” The SFC concluded that these statements constituted “material information likely to influence the market’s perception of the applicant” (Code of Conduct paragraph 16.2) and imposed a reprimand on the sponsor for failing to supervise the issuer’s communications.

Don’t: Engage in “Wall-Crossing” Without Strict Controls

“Wall-crossing” — the process of informing a select group of potential investors about a forthcoming listing before the A1 filing — is permissible under HKEX Rule 11.05A, but only if the issuer and its sponsor follow strict protocols. The issuer must first obtain a written confidentiality agreement from each wall-crossed investor, and the sponsor must maintain a log of all wall-crossing interactions. The HKEX’s 2024 update to Listing Decision LD117-2024 requires that the log be submitted to the HKEX within five business days of any wall-crossing activity.

A common error is to treat wall-crossing as a free pass for informal discussions. In 2024, the SFC fined a private equity firm HKD 2.8 million for conducting wall-crossing meetings without written confidentiality agreements and for sharing financial projections that were not yet included in the A1 draft prospectus.

Navigating the Post-A1 Submission Quiet Period

Once the A1 is filed, the regulatory constraints tighten significantly. The issuer must assume that every communication — internal or external — is subject to scrutiny.

Do: Implement a “Blackout” on All Non-Essential External Communications

The safest approach is to suspend all investor relations activities, media engagements, and public announcements from the date of A1 submission until the PHIP is issued. This includes routine activities such as quarterly business updates, industry conference presentations, and even social media posts about company milestones. The HKEX’s Guidance Letter GL86-16 states that “any communication that could be construed as promoting the listing application” is prohibited, and the burden of proof lies with the issuer to demonstrate that a communication was not promotional.

For issuers with existing public debt or a prior listing on another exchange, the situation is more nuanced. The HKEX’s Listing Decision LD119-2024 clarifies that an issuer may continue to make disclosures required by other regulators (e.g., the SEC for a US-listed company) during the HKEX quiet period, but only if those disclosures are “strictly necessary” and do not go beyond the minimum required by the other jurisdiction. Any voluntary disclosure beyond the regulatory minimum will be treated as a breach of HKEX Rule 11.05.

Don’t: Allow Sponsor or Underwriter Research to Circulate Uncontrolled

The PDR process is tightly regulated under the Code of Conduct paragraph 16.3. The research must be prepared by the sponsor or a designated co-manager, and it must be clearly labelled as “Pre-Deal Research — Not for Distribution to the Public.” The research may only be distributed to “qualified institutional buyers” (QIBs) as defined under the Securities and Futures Ordinance (Cap. 571), and the distributor must maintain a record of each recipient.

A 2025 enforcement action by the SFC against a global investment bank illustrates the risk. The bank’s equity research team distributed a PDR report to a retail brokerage’s sales desk, which then forwarded it to high-net-worth individual clients. The SFC found that the bank had failed to implement adequate controls to prevent onward distribution, resulting in a fine of HKD 5 million and a requirement to appoint an independent compliance reviewer for 12 months.

The Role of the Company Secretary and Legal Counsel in Compliance

The company secretary and external legal counsel are the first line of defence against quiet period breaches. Their responsibilities extend beyond drafting policy documents to active monitoring and enforcement.

Do: Conduct Weekly Compliance Audits During the Quiet Period

The company secretary should establish a weekly audit process that reviews all outgoing communications — including emails, phone call logs, and meeting minutes — for potential quiet period violations. The audit should be documented and signed off by the compliance officer. The HKEX’s 2024 revised guidance on sponsor supervision (HKEX-GL86-16, paragraph 4.7) recommends that the issuer’s compliance function maintain a “communications log” that records the date, time, participants, and content of every external interaction.

In practice, this means that the company secretary must have access to the CEO’s and CFO’s email accounts and calendar entries. Any meeting with an external party — even a casual lunch with an industry analyst — must be recorded and reviewed. The cost of non-compliance is high: in 2024, the SFC suspended a sponsor for three months after it was found that the issuer’s CEO had held a series of private dinners with institutional investors during the quiet period, none of which were recorded in the communications log.

Don’t: Rely on Verbal Instructions or “Common Sense”

A recurring theme in SFC enforcement actions is the failure of issuers to document compliance procedures. Verbal instructions from the sponsor or legal counsel that “we should be careful about what we say” are insufficient. Every restriction must be in writing, and every breach must be escalated through a formal reporting channel.

The SFC’s 2023 reprimand against a biotech issuer’s company secretary highlighted this issue. The secretary had verbally reminded the CEO not to discuss the IPO during a conference call with analysts, but the CEO ignored the reminder and made forward-looking statements about the company’s clinical trial results. The SFC found that the secretary had failed to document the reminder or to escalate the breach to the board, resulting in a personal reprimand against the secretary under the Securities and Futures Ordinance section 194.

Preparing for the PHIP and Beyond: The Transition to Active Marketing

The issuance of the PHIP marks the end of the quiet period’s first phase and the beginning of the formal marketing process. However, the transition is not automatic, and the issuer must take specific steps to ensure compliance.

Do: Conduct a “Clean-Up” Review Before PHIP Distribution

Before the PHIP is issued, the issuer should conduct a comprehensive review of all materials that will be distributed to investors during the bookbuilding process. This review should verify that the PHIP contains no information that was not already included in the A1 draft prospectus (except for updates required by the HKEX), and that all financial projections, valuation estimates, and forward-looking statements are clearly labelled as “indicative and subject to change.”

The HKEX’s Listing Decision LD121-2024 requires that the PHIP include a prominent disclaimer stating that “this document has been prepared solely for the purpose of the proposed listing of the issuer on the Stock Exchange of Hong Kong Limited and may not be distributed to any person other than the intended recipients.” Any distribution of the PHIP to unauthorised persons — including retail investors or the media — constitutes a breach of HKEX Rule 11.07.

Don’t: Assume the Quiet Period Ends at Listing

The quiet period rules do not automatically expire upon listing. The SFC’s Code of Conduct paragraph 16.4 imposes a “post-listing quiet period” that extends for 30 days after the first day of dealings. During this period, the issuer and its sponsor are prohibited from publishing any research reports or making any public statements that could be construed as an attempt to support the share price or influence analyst coverage.

The 2024 enforcement action against a consumer goods issuer illustrates the risk. The issuer’s CEO gave a media interview on the second day of trading in which he stated that the company’s share price was “undervalued” and that the company expected to “beat market expectations” in its first quarterly results. The SFC found that these statements violated the post-listing quiet period and imposed a fine of HKD 1.5 million on the issuer and a reprimand on the CEO.

Actionable Takeaways

1. Adopt a written IPO Communication Policy approved by the board before the A1 filing, with clear prohibitions on financial projections, valuation estimates, and forward-looking statements during the quiet period.
2. Implement a weekly compliance audit process during the quiet period, with a documented communications log that records every external interaction by the CEO, CFO, and other authorised spokespersons.
3. Treat the post-A1 quiet period as a complete blackout on all non-essential external communications, including social media posts, industry conference presentations, and media interviews.
4. Ensure that all PDR reports are clearly labelled, distributed only to QIBs, and filed with the HKEX within 24 hours of distribution, with a maintained record of each recipient.
5. Extend quiet period compliance procedures for 30 days after the listing date, prohibiting any statements that could be construed as an attempt to support the share price or influence analyst coverage.