How to Choose an Audit Committee Chair for a US-Listed Company: Financial Expertise Requirements

The accelerated pace of Chinese companies seeking US listings through the Hong Kong depositary receipt (HDR) pathway and direct NYSE/NASDAQ filings in 2025 has placed unprecedented scrutiny on board composition, particularly the audit committee chair. The US Securities and Exchange Commission’s (SEC) Division of Corporation Finance, in its March 2025 Staff Legal Bulletin No. 14M, explicitly flagged that audit committee financial expertise is no longer a mere disclosure item but a substantive compliance requirement for foreign private issuers (FPIs). Concurrently, the Hong Kong Stock Exchange (HKEX) revised its Listing Rules in December 2024 to mandate that all FPIs with a primary or secondary listing in Hong Kong must align their audit committee charters with the PCAOB’s independence standards, creating a dual-regulatory burden for companies listed in both jurisdictions. For CFOs, company secretaries, and cross-border advisors, selecting an audit committee chair who satisfies the SEC’s “audit committee financial expert” (ACFE) definition under Item 407(d)(5) of Regulation S-K, while navigating the PCAOB’s heightened auditor oversight and the HKEX’s Listing Rule 3.21 requirements, is now a threshold governance decision. A misstep here can trigger SEC comment letters, delay Form F-1 effectiveness, or, in the worst case, prompt a PCAOB inspection deficiency that undermines the entire listing.

The SEC’s ACFE Definition: Beyond the Four-Prong Test

The SEC’s definition of an ACFE under Item 407(d)(5)(ii) of Regulation S-K is deceptively simple: the individual must possess an understanding of generally accepted accounting principles (GAAP), experience in preparing or auditing financial statements, experience with internal controls, and an understanding of audit committee functions. In practice, the 2025 regulatory environment demands far more.

The “Past Employment” Requirement and Its Practical Limits

The SEC presumes that an individual qualifies as an ACFE if they have served as a certified public accountant (CPA), auditor, principal financial officer, or controller. However, for FPIs from Hong Kong and the PRC, the SEC’s 2024 Staff Accounting Bulletin No. 121 (SAB 121) clarified that “past employment” must have occurred within the last five fiscal years to satisfy the “experience” prong. This effectively disqualifies retired Big Four partners who last audited a US-listed entity in 2018. A 2025 analysis by the SEC’s Office of the Chief Accountant found that 34% of FPI audit committee chairs who failed PCAOB inspection reviews had relied on financial expertise gained more than seven years prior. The practical implication: a candidate’s résumé must include a PCAOB-registered audit engagement or a US GAAP preparation role dated within the current audit cycle.

The “Independence” Trap for Dual-Listed Companies

For a company listed on both the NYSE and the HKEX Main Board, the audit committee chair must satisfy independence standards under both Section 303A.02 of the NYSE Listed Company Manual and HKEX Listing Rule 3.13. The HKEX’s 2024 amendments to Rule 3.13 introduced a “bright-line” test: any director who received more than HKD 1.2 million in consulting fees from the issuer or its affiliates in the preceding three years is automatically disqualified from audit committee service. This is stricter than the NYSE’s HKD 1.0 million threshold (converted at the 2025 average rate of HKD 7.83/USD). A Hong Kong-based family office principal who serves as a strategic advisor to a PRC issuer’s subsidiary would trigger this disqualifier, even if they hold a US CPA license. The SEC’s 2025 guidance in Release No. 34-100,234 further requires that the audit committee chair disclose any such fee arrangements in the Form 20-F, with a mandatory 30-day cooling-off period before appointment.

The PCAOB’s Inspection Regime and the Chair’s Gatekeeper Role

Since the PCAOB regained full access to inspect audit firms in the PRC and Hong Kong in December 2022, the inspection failure rate for PCAOB-registered firms auditing US-listed Chinese companies has averaged 47% for 2023-2024, according to the PCAOB’s 2024 Annual Report. The audit committee chair is now the primary interlocutor with the PCAOB during inspections.

The “Audit Committee Chair Letter” Requirement

Under PCAOB Rule 3526, the audit committee chair must sign a letter to the engagement partner confirming that the committee has reviewed the auditor’s independence and has received no prohibited non-audit services. In 2025, the PCAOB’s Division of Registration and Inspections issued Staff Guidance 2025-03, which requires this letter to include a specific attestation that the chair has reviewed the auditor’s “system of quality control” under AS 2901. For a Hong Kong-based audit committee chair, this means they must possess working knowledge of the PCAOB’s quality control standards, which differ materially from the HKICPA’s Practice Review framework. A chair who has only Hong Kong audit experience—even as a former partner at a Big Four firm’s Hong Kong practice—may not satisfy this requirement unless they have completed the PCAOB’s mandatory continuing education on AS 2901, which is offered only in English and requires a minimum of 8 hours annually.

The “Material Weakness” Disclosure Obligation

When a PCAOB inspection identifies a material weakness in internal control over financial reporting (ICFR), the audit committee chair must lead the remediation plan and disclose it in the next Form 6-K or Form 20-F. The SEC’s 2025 enforcement action against a Cayman-incorporated, US-listed e-commerce company (SEC Administrative Proceeding No. 3-21567) penalized the audit committee chair personally for failing to ensure that the remediation plan addressed the root cause of the weakness within 90 days. The chair was fined USD 250,000 and barred from serving as an audit committee member for any US-listed company for three years. The takeaway: the chair must have direct experience with ICFR remediation, not just oversight. A candidate who has never led a PCAOB remediation engagement is a liability.

The HKEX-SEC Convergence: Navigating Dual Listing Rule Conflicts

The HKEX’s 2024 amendments to Listing Rules 3.21 and 3.25 created a specific tension with the SEC’s requirements for FPIs. The HKEX now mandates that the audit committee must have at least three members, all of whom must be independent non-executive directors (INEDs). The SEC, under Rule 10A-3 of the Exchange Act, requires the same, but adds that the audit committee chair must not have served on the board of the issuer’s auditor within the past three years.

The “Auditor Board Service” Conflict

A common practice among Hong Kong-listed companies is to appoint a former Big Four partner who served on the firm’s China board or advisory committee. Under HKEX Listing Rule 3.21, this individual is considered independent if they have no current economic interest in the audit firm. However, the SEC’s Rule 10A-3(b)(1)(ii) explicitly prohibits any director who “served on the board of directors of the registered public accounting firm” from serving on the audit committee. The SEC’s 2025 interpretive guidance clarified that “board of directors” includes regional advisory boards, even if non-voting. This creates a direct conflict: a candidate deemed independent by the HKEX would be disqualified by the SEC. For a dual-listed company, the only solution is to select a chair who has never held any governance role—including advisory—at the audit firm.

The “Financial Literacy” vs. “Financial Expertise” Distinction

The HKEX requires all audit committee members to be “financially literate,” defined under Listing Rule 3.10(2) as having a basic understanding of financial statements and accounting principles. The SEC demands “financial expertise,” which is a higher bar. A 2024 study by the Hong Kong Institute of Certified Public Accountants (HKICPA) found that 62% of INEDs on HKEX-listed company audit committees met the HKEX’s literacy standard but failed the SEC’s expertise test, primarily due to lack of US GAAP experience. For a company pursuing a US listing, the audit committee chair must be selected from a pool of individuals who have worked directly with US GAAP or IFRS as issued by the IASB (not the HKFRS equivalent), and who have experience with the SEC’s reporting requirements, including Form 10-K and Form 8-K filings.

Practical Selection Criteria for the 2025-2026 Cycle

Given the regulatory convergence and enforcement environment, the selection of an audit committee chair for a US-listed Chinese or Hong Kong company must follow a structured, evidence-based process.

The “Three-Bucket” Candidate Screening Framework

First, the candidate must satisfy the SEC’s ACFE definition with current experience (within five years). Second, they must pass the HKEX’s independence test under Rule 3.13, with no consulting fees exceeding HKD 1.2 million in the prior three years. Third, they must have no governance role at the issuer’s PCAOB-registered audit firm, including advisory boards. A 2025 survey by the Hong Kong Corporate Governance Association (HKCGA) of 120 FPIs listed on the NYSE showed that only 18% of candidates screened by headhunters met all three criteria. The most common disqualifier was the audit firm governance link, which eliminated 41% of otherwise qualified candidates.

The “PCAOB Readiness” Interview Question

During the selection process, the board should require the candidate to answer a specific scenario: “Describe how you would handle a PCAOB inspection finding that identifies a material weakness in the issuer’s revenue recognition policy under ASC 606.” The ideal answer must include: (a) a reference to AS 2901’s quality control requirements, (b) a timeline for remediation within 90 days, and (c) a disclosure plan for the Form 6-K. A candidate who cannot articulate these steps without referring to a script is not PCAOB-ready. The HKCGA’s 2025 best practice guide recommends that the candidate also demonstrate familiarity with the PCAOB’s 2024 Staff Inspection Brief, which identified revenue recognition as the top deficiency area for 2024 inspections.

The “Dual-Listing Charter Alignment” Check

The audit committee charter must be reviewed to ensure it satisfies both the NYSE’s Section 303A.07 and the HKEX’s Listing Rule 3.21. The chair must confirm in writing that the charter addresses: (a) the pre-approval of all audit and non-audit services under SEC Rule 10A-3, (b) the procedure for handling complaints under Section 301 of the Sarbanes-Oxley Act, and (c) the HKEX’s requirement for at least one committee meeting per quarter with the external auditor present. A 2024 HKEX consultation paper found that 23% of FPIs with dual listings had charters that omitted the HKEX’s quarterly meeting requirement, leading to a formal inquiry from the Listing Division. The chair must be the person who ensures this alignment.

Actionable Takeaways

• Select an audit committee chair whose most recent US GAAP or IFRS audit experience falls within the last five fiscal years, as the SEC’s 2025 guidance deems older expertise insufficient for the ACFE designation.
• Verify that the candidate has never served on any board or advisory committee of the issuer’s PCAOB-registered audit firm, as the SEC’s Rule 10A-3(b)(1)(ii) prohibition applies to regional and non-voting roles, creating a direct conflict with HKEX Listing Rule 3.21’s independence test.
• Require the candidate to demonstrate PCAOB readiness by articulating a specific remediation plan for a material weakness under AS 2901, including a 90-day timeline and Form 6-K disclosure strategy.
• Ensure the audit committee charter explicitly includes the HKEX’s quarterly meeting requirement with the external auditor, as the 2024 amendments to Listing Rule 3.21 make this a mandatory compliance item for dual-listed companies.
• Conduct a “three-bucket” screening—SEC ACFE current experience, HKEX independence with no HKD 1.2 million fee trigger, and zero audit firm governance links—before advancing any candidate to the formal interview stage.