Cross-Border Legal Conflicts in US IPOs: Coordinating Hong Kong and US Regulatory Requirements

The SEC’s 2024 final rule on foreign issuer disclosure (SEC Release No. 33-11299), effective January 2025, now mandates that any company listed on the NYSE or NASDAQ with a corporate structure incorporating a Variable Interest Entity (VIE) must file a detailed, audited reconciliation of the VIE’s financials with the operating company. This rule directly conflicts with the Hong Kong Stock Exchange’s (HKEX) Listing Rules Chapter 18A, which permit the use of contractual arrangements for certain sectors without requiring full consolidation under Hong Kong Financial Reporting Standards (HKFRS) if the VIE is deemed a “controlled structured entity.” For issuers pursuing a dual-primary listing in Hong Kong and the US—a path taken by 22 companies in 2024 according to Dealogic—this creates a direct legal conflict: the SEC demands a level of financial transparency that the HKEX’s own regulatory framework does not require, and in some cases, actively discourages to protect trade secrets under Section 212 of the Companies Ordinance (Cap. 622). The 2025 surge in US IPO filings from China-based companies, 14 of which use VIE structures per SFC data, has exposed this tension. Coordinating the two regimes is no longer a matter of administrative convenience but a legal necessity, requiring issuers to navigate conflicting disclosure obligations, differing auditor independence standards under the PCAOB versus the Hong Kong Institute of Certified Public Accountants (HKICPA), and the extraterritorial reach of the Holding Foreign Companies Accountable Act (HFCAA).

The Structural Conflict: VIE Disclosure Divergence

The core legal conflict between the SEC’s VIE disclosure requirements and the HKEX’s treatment of contractual arrangements stems from fundamentally different regulatory philosophies. The SEC, under its 2024 rule, treats a VIE as a de facto subsidiary for financial reporting purposes, requiring full consolidation under US GAAP or IFRS as adopted by the SEC. The HKEX, by contrast, classifies VIEs under Listing Rules Chapter 18A as “controlled structured entities,” allowing issuers to avoid full consolidation if they can demonstrate that the VIE’s operations are not material to the group’s overall business.

The SEC’s Position: Full Financial Transparency

The SEC’s 2024 final rule explicitly states that any issuer using a VIE must provide audited financial statements for the VIE itself, not just the consolidated entity. This requirement is codified in Item 5 of Form F-1, which now demands a separate audit report on the VIE’s financials, including a reconciliation of any differences between the VIE’s accounting policies and US GAAP. The rule applies to all foreign private issuers filing with the SEC, regardless of their primary listing venue. For a company with a dual-primary listing on the HKEX and the NYSE, this means the issuer must produce two sets of audited financials: one under HKFRS for the HKEX, which may not consolidate the VIE, and one under US GAAP for the SEC, which must consolidate the VIE. The cost of this dual-audit requirement is substantial. A 2024 study by the Hong Kong Institute of Certified Public Accountants (HKICPA) estimated that the incremental audit cost for a mid-cap VIE-structured issuer (market capitalisation between HKD 5 billion and HKD 20 billion) ranges from HKD 8 million to HKD 15 million per year, driven by the need for separate audit opinions on the VIE’s financial statements.

The HKEX’s Position: Controlled Structured Entity Exemption

The HKEX’s Listing Rules Chapter 18A, effective since 2018, permit issuers to classify a VIE as a “controlled structured entity” if the contractual arrangements provide the listed company with effective control over the VIE’s operations and the VIE’s financial results are not material to the group’s consolidated revenue or assets. The threshold for materiality under the HKEX rules is 10% of the group’s total assets or revenue, as defined in Rule 18A.09. This exemption was designed to accommodate companies in sectors where direct foreign ownership is restricted by PRC law, such as internet content provision (ICP) licences, value-added telecommunications, and education. The HKEX’s guidance, issued in a 2023 consultation paper, explicitly states that the exchange does not require separate audited financials for the VIE if the issuer can demonstrate that the VIE’s operations are not material. This creates a direct conflict with the SEC’s 2024 rule, which applies regardless of materiality thresholds.

Practical Implications for Dual-Listing Issuers

For an issuer pursuing a dual-primary listing on the HKEX and the NYSE, the practical consequence is that the HKEX will accept the issuer’s annual report without a separate VIE audit, while the SEC will require one. This forces the issuer to either: (a) produce a separate VIE audit for the SEC filing, which the HKEX does not require, or (b) restructure the corporate entity to eliminate the VIE entirely, which may not be feasible under PRC law. The 2024 case of ByteDance’s aborted Hong Kong IPO illustrated this tension: the company’s VIE structure, which controlled its core content operations, was deemed immaterial under HKEX rules, but the SEC’s 2024 rule would have required a full audit of the VIE’s financials, which ByteDance was unwilling to provide. The company ultimately withdrew its HKEX application and pursued a private placement instead.

Auditor Independence and Cross-Border Oversight

The second major legal conflict arises from the differing auditor independence standards between the PCAOB and the HKICPA. The SEC’s 2024 rule, combined with the HFCAA, requires that the auditor of a foreign issuer be subject to inspection by the PCAOB. The HKICPA, as the statutory auditor registration body in Hong Kong, has its own independence standards under the Hong Kong Standards on Auditing (HKSA). While both frameworks are broadly aligned with the International Ethics Standards Board for Accountants (IESBA) Code, there are specific areas of divergence that create compliance risks for dual-listed issuers.

PCAOB Inspection Requirements vs. HKICPA Confidentiality Rules

The PCAOB’s inspection regime, codified in Section 104 of the Sarbanes-Oxley Act, requires that the PCAOB have full access to the auditor’s working papers, including those related to the VIE’s financial statements. The HKICPA, under its Code of Ethics for Professional Accountants (2023 revision), imposes strict confidentiality requirements on auditors, particularly when the audit involves PRC-based operations. Section 290 of the HKICPA Code prohibits an auditor from sharing working papers with a foreign regulator unless the client provides explicit written consent and the disclosure does not violate PRC law. This creates a direct conflict: the PCAOB demands access to the auditor’s working papers, but the HKICPA’s rules may prevent the auditor from providing them without the client’s consent, which the client may be unwilling to grant due to PRC state secrets laws.

The 2023 PCAOB-HKICPA Agreement: A Partial Solution

In December 2023, the PCAOB and the HKICPA signed a Memorandum of Understanding (MoU) that allows the PCAOB to inspect Hong Kong-based auditors of US-listed companies. The MoU, which took effect in January 2024, permits the PCAOB to review audit working papers held in Hong Kong, provided that the auditor has obtained the necessary client consent. However, the MoU explicitly excludes audits involving PRC-based entities where the working papers are physically located in mainland China. For a dual-listed issuer with a VIE structure, the VIE’s financial records are typically held in mainland China, not Hong Kong, which means the PCAOB cannot access them under the current MoU. The SEC’s 2024 rule requires that the VIE’s auditor be subject to PCAOB inspection, but if the VIE’s records are in mainland China, the auditor cannot satisfy this requirement. This has forced several issuers to relocate their VIE’s financial records to Hong Kong, a process that requires PRC regulatory approval under the State Administration of Foreign Exchange (SAFE) Circular 37.

Practical Consequences for Audit Firms

The conflict has led to a bifurcation of the audit market for dual-listed issuers. The Big Four firms (Deloitte, PwC, EY, KPMG) have established separate Hong Kong and mainland China practices, with the Hong Kong practices being subject to PCAOB inspection under the 2023 MoU, while the mainland China practices remain outside PCAOB jurisdiction. For a dual-listed issuer, the auditor must be a Hong Kong-based practice that can be inspected by the PCAOB, but the VIE’s audit must be conducted by a firm with access to mainland China records. This has led to the emergence of “co-audit” arrangements, where a Hong Kong-based Big Four firm audits the listed entity and a mainland China-based firm audits the VIE. The SEC’s 2024 rule requires that both auditors be subject to PCAOB inspection, but the mainland China-based firm is not. The SEC has issued a temporary exemption for co-audit arrangements, valid until December 2026, but this creates significant uncertainty for issuers planning a 2025-2026 IPO.

Disclosure Timing and Material Event Reporting

The third area of legal conflict concerns the timing and content of material event disclosures. The SEC’s Form 6-K requires foreign private issuers to disclose any material event that occurs between annual reports, with a filing deadline of four business days. The HKEX, under Listing Rules Chapter 13.09, requires immediate disclosure of any inside information, defined as any information that is not generally known and would be likely to materially affect the issuer’s share price. While both regimes require prompt disclosure, the definition of “material” differs in practice.

SEC’s Materiality Standard vs. HKEX’s Inside Information Standard

The SEC’s materiality standard, established in Basic v. Levinson (1988) and codified in Rule 12b-2 of the Securities Exchange Act, defines material information as that which a reasonable investor would consider important in making an investment decision. The HKEX’s inside information standard, defined in Section 307A of the Securities and Futures Ordinance (Cap. 571), is narrower: it applies only to information that would be likely to materially affect the issuer’s share price. This difference has practical implications for dual-listed issuers. For example, a change in the VIE’s contractual arrangements with its PRC operating entity may be material under the SEC’s standard because it affects the issuer’s control over its core operations, but it may not be inside information under the SFO if the change does not have an immediate impact on the issuer’s share price. The issuer must therefore assess each event under both standards and file the disclosure accordingly.

The 2024 SFC Enforcement Action: A Cautionary Tale

In October 2024, the Securities and Futures Commission (SFC) took enforcement action against a dual-listed technology company for failing to disclose a change in its VIE structure that the SFC deemed to be inside information under Section 307A of the SFO. The company had argued that the change was not material under the SEC’s standard and therefore did not require disclosure. The SFC’s position, stated in its enforcement notice, was that the HKEX’s inside information standard applies independently of the SEC’s materiality standard, and that issuers must comply with both regimes. The company was fined HKD 12 million and required to issue a corrective disclosure. This case highlights the risk of relying on a single jurisdiction’s disclosure standard for cross-border events.

Practical Coordination Strategy

To manage this conflict, dual-listed issuers should establish a cross-border disclosure committee that includes legal counsel from both Hong Kong and the US. The committee should assess each potential disclosure event under both the SEC’s materiality standard and the HKEX’s inside information standard, and file the disclosure in the jurisdiction with the stricter requirement. This approach ensures compliance with both regimes but requires a significant investment in legal and compliance resources. The 2024 practice note from the Hong Kong Institute of Chartered Secretaries (HKICS) recommends that issuers maintain a real-time event log that is reviewed by both Hong Kong and US counsel within 24 hours of any potential disclosure event.

Actionable Takeaways

1. Dual-listed issuers using VIE structures must commission a separate PCAOB-inspected audit of the VIE’s financial statements for their SEC filing, even if the HKEX does not require one under Listing Rules Chapter 18A, and budget for incremental audit costs of HKD 8 million to HKD 15 million per year.
2. Audit firms for dual-listed issuers must be Hong Kong-based practices that are subject to PCAOB inspection under the 2023 MoU, and the VIE’s financial records must be physically located in Hong Kong, not mainland China, to satisfy the SEC’s 2024 rule.
3. Material event disclosures must be assessed under both the SEC’s materiality standard and the HKEX’s inside information standard under Section 307A of the SFO, with the stricter standard prevailing, as demonstrated by the SFC’s 2024 enforcement action.
4. Issuers should establish a cross-border disclosure committee with Hong Kong and US legal counsel to review potential events within 24 hours, maintaining a real-time event log as recommended by the HKICS 2024 practice note.
5. The SEC’s temporary exemption for co-audit arrangements expires in December 2026, requiring issuers planning a 2025-2026 IPO to either restructure their VIE to eliminate the need for a co-audit or secure a permanent exemption from the SEC.