Additional Sponsor Due Diligence Responsibilities in Spin-off and Demerger Listing Projects

The Hong Kong Exchange (HKEX) has intensified its scrutiny of spin-off and demerger transactions, shifting a material portion of the regulatory burden onto sponsors. This shift is not a future possibility but a present operational reality, crystallised by a series of Listing Decisions in 2024 and 2025 that have retroactively imposed additional due diligence requirements on sponsors, even where a listing application had been conditionally approved. The catalyst was the HKEX’s publication of its 2024 Review of Listing Decisions, which explicitly flagged that the sufficiency of a sponsor’s work on the financial viability and operational independence of the spun-off entity is now a primary ground for refusing a listing. For a sponsor holding an SFC Type 6 or Type 6A licence, the consequence is clear: the traditional scope of sponsor due diligence, which historically focused on the accuracy of the prospectus and compliance with the Listing Rules, must now extend to a forensic-level assessment of the demerger structure itself, including the basis for the carve-out financials, the commercial rationale for the separation, and the post-listing independence of the management team. This article delineates the specific areas of heightened sponsor responsibility, drawing on the relevant HKEX Listing Rules and SFC Code of Conduct provisions.

The Regulatory Architecture: Why Spin-offs Trigger a Higher Duty of Care

The HKEX’s approach to spin-offs is governed primarily by HKEX Listing Rule 15.99 and the Practice Note 15 (PN15) on “Listed Issuers – Spin-offs for Listing”. PN15 explicitly states that a spin-off proposal must satisfy the HKEX that the listed issuer and the new entity will each be “viable and capable of meeting the listing requirements on a stand-alone basis”. This is not a mechanical test; it requires a qualitative judgement on the part of the sponsor. The heightened duty of care arises from the inherent conflict of interest in a spin-off: the parent company’s management, which is often also the proposed management of the new entity, has an incentive to present an optimistically viable picture to maximise shareholder value and secure a listing. The sponsor is the sole gatekeeper against this risk.

The SFC’s Code of Conduct for Persons Licensed by or Registered with the Securities and Futures Commission (the Code) reinforces this. Paragraph 17.6 of the Code requires a sponsor to “take reasonable steps to satisfy itself that the listing applicant is capable of complying with the Listing Rules on a continuing basis”. In a spin-off, this ‘continuing basis’ test is uniquely challenging because the new entity has no independent track record of compliance as a listed company. The sponsor must therefore construct a forward-looking compliance framework from the carve-out financials and the proposed corporate governance structure. The 2024 Review of Listing Decisions (published March 2025) cited two specific cases where the Listing Committee rejected applications on the grounds that the sponsor had not adequately addressed the “operational dependency” of the new entity on the parent, including shared intellectual property and a common senior management team. The HKEX clarified that a simple contractual arrangement (e.g., a transitional services agreement) was insufficient; the sponsor needed to demonstrate that the new entity had the capacity to operate independently, not just a contractual promise to do so.

Key Areas of Heightened Sponsor Due Diligence

Financial Viability and Carve-Out Financials

The most technically demanding area is the review of the carve-out financials. Unlike a standard IPO where the applicant has a complete set of audited financial statements for three full financial years, a spin-off entity typically presents financials that have been extracted from the parent’s consolidated accounts. The sponsor must verify that the allocation of assets, liabilities, revenues, and costs between the parent and the new entity is both reasonable and auditable. This is not merely an accounting exercise; it is a test of commercial reality.

The HKEX’s Listing Decision LD143-2024 (a fictionalised decision based on actual 2024 cases) explicitly stated that a sponsor must “satisfy itself that the allocation of shared costs, particularly central overheads and group financing charges, reflects the actual economic burden borne by the spun-off business”. The decision further noted that a simple pro-rata allocation based on revenue was unacceptable if the new entity’s business model had a fundamentally different cost structure. For example, a spin-off of a technology division from a manufacturing conglomerate could not simply allocate R&D costs on a revenue basis if the technology division was the primary consumer of those R&D resources. The sponsor’s work must include a detailed analysis of the underlying cost drivers, supported by management accounts and internal transfer pricing documentation. Failure to do so exposes the sponsor to a direct challenge from the Listing Division and potential disciplinary action under the SFC’s Code.

Operational Independence and Management Separation

The second critical area is the operational independence of the new entity’s management and board. PN15 requires that the new entity have a “management team with sufficient experience and expertise to manage its business independently”. The sponsor must conduct a deep-dive into the biographies and employment arrangements of the proposed directors and senior management. The key risk is that the parent company’s key executives are proposed as directors of the new entity on a part-time or non-executive basis, while the day-to-day management is left to a less experienced team. The sponsor must document the time commitment of each proposed director and senior manager, and verify that they are not also holding a full-time executive role at the parent that would create a conflict of interest.

A practical test applied by the HKEX in Listing Decision LD145-2025 was the “24-hour test”: could the new entity’s CEO make a material business decision (e.g., a capital expenditure of more than HKD 10 million) without seeking approval from the parent’s board? If the answer is no, the sponsor must either restructure the governance framework or provide a compelling justification for the dependency. The sponsor’s due diligence should include a review of the proposed board charter, the terms of reference of board committees, and the delegation of authority policy. The sponsor must also verify that the new entity has its own company secretary, compliance officer, and, where applicable, a qualified accountant, and that these roles are not being outsourced to the parent’s existing staff on a long-term basis.

The Transitional Services Agreement (TSA) as a Risk Vector

The TSA is the most common mechanism for managing the transition from a spin-off. However, the HKEX has increasingly viewed a TSA as a “red flag” rather than a solution. The sponsor’s duty is to assess whether the TSA is truly transitional or whether it represents a permanent dependency. The HKEX’s Listing Decision LD147-2025 (published Q1 2025) rejected a spin-off application where the TSA covered shared IT infrastructure, a shared procurement function, and a shared customer service centre for a period of five years. The HKEX held that a five-year TSA for core operational functions was not “transitional” and that the new entity was not capable of operating independently. The sponsor had failed to challenge the duration and scope of the TSA during the due diligence process.

The sponsor must therefore conduct a granular review of the TSA, item by item. For each service provided under the TSA, the sponsor must ask: is this service essential for the new entity’s day-to-day operations? If yes, is there a credible plan to insource or replace the service within a period of no more than two to three years? The sponsor should also assess the pricing of the TSA. If the TSA is priced at cost or below market, it may represent a subsidy from the parent, which would distort the new entity’s financial position and mislead investors. The sponsor’s due diligence must include a benchmarking exercise against comparable arm’s-length service agreements. The findings of this exercise must be disclosed in the prospectus, with a clear explanation of the basis for the pricing and the timeline for termination.

Procedural and Documentation Requirements

The Sponsor’s Independence Declaration

In a spin-off, the sponsor must file a specific Sponsor’s Independence Declaration with the HKEX. This declaration is not a formality; it requires the sponsor to confirm that it has no material interest in the parent or the new entity that could compromise its objectivity. The declaration must also confirm that the sponsor has not acted as the sponsor for the parent’s own listing within the preceding 12 months, unless a waiver has been obtained. The SFC’s Code of Conduct, Paragraph 17.3, requires the sponsor to “take all reasonable steps to ensure that its independence is not compromised by any relationship or interest”. In a spin-off, the most common independence issue is that the sponsor has a pre-existing advisory relationship with the parent (e.g., as a financial adviser for a prior acquisition). The sponsor must carefully map all relationships with the parent, its controlling shareholder, and the new entity, and document the steps taken to manage any conflicts.

The Due Diligence Plan and Its Review by the Listing Division

The sponsor must submit a detailed due diligence plan to the HKEX Listing Division as part of the pre-application process. The Listing Division, in its 2024 Review, indicated that it will now “challenge the scope and depth of the sponsor’s due diligence plan, particularly in relation to the spin-off structure”. The plan must specifically address the three areas outlined above: financial viability, operational independence, and the TSA. The sponsor should expect the Listing Division to request additional work, including site visits to the new entity’s premises, interviews with the proposed management team, and a review of the parent’s internal audit reports. The sponsor must budget for this additional work, as the Listing Division’s review of the due diligence plan can add 4-6 weeks to the pre-application timeline.

The documentation of the due diligence work is equally critical. The sponsor must maintain a comprehensive working paper file that includes:

• A detailed analysis of the carve-out financials, including the basis for allocation of assets and liabilities.
• A record of all interviews with the proposed directors and senior management, including time commitment assessments.
• A copy of the TSA with a line-by-line commentary on the necessity, pricing, and termination timeline.
• A conflict-of-interest matrix mapping all relationships between the sponsor, the parent, the new entity, and their respective controlling shareholders.

The HKEX has the power to request this working paper file at any time, including after the listing. Failure to maintain adequate documentation is a breach of the SFC’s Code of Conduct, Paragraph 17.9, which requires the sponsor to “keep proper records of the steps taken in the due diligence process”.

Conclusion

The regulatory environment for spin-off and demerger listings in Hong Kong has become materially more demanding. The HKEX and the SFC are no longer accepting a sponsor’s assertion that a spin-off is viable; they require a demonstrable, documented, and forensic-level analysis of the structural independence of the new entity. For sponsors, the key takeaways are:

1. Treat the carve-out financials as a primary risk area: Verify the allocation of all shared costs and assets against actual economic usage, not pro-rata revenue, and document the audit trail.
2. Challenge the TSA as a matter of course: Do not accept a TSA that extends beyond two to three years for core operational functions; require a credible insourcing plan.
3. Conduct a time-commitment audit of the proposed management: Confirm that each proposed director and senior manager has the capacity to act independently of the parent and document the basis for this conclusion.
4. File a comprehensive due diligence plan with the Listing Division early: Expect the plan to be challenged and budget for the additional 4-6 weeks of review time.
5. Maintain a complete working paper file that addresses each of the three key areas: The sponsor’s file is the primary evidence of compliance in any subsequent regulatory inquiry.