IPO · 2026-05-19

Sunset Clauses in WVR Structures: Termination Conditions for Dual-Class Shares

The first generation of Hong Kong-listed weighted voting rights (WVR) issuers is approaching a critical juncture. Xiaomi Corporation (1810.HK), which listed on 9 July 2018 under the new Chapter 8A of the HKEX Main Board Listing Rules, saw its 10-year sunset clause trigger on 9 July 2024, automatically converting its Founder Shares (Class B shares with 10 votes each) into ordinary shares (Class A shares with one vote each) upon the resignation of co-founder Lei Jun from the board. This single event, recorded in Xiaomi’s 2024 annual report filed on 18 April 2025, has catalysed a market-wide reassessment of WVR termination conditions. With a further 12 WVR-listed companies on the Main Board—including Meituan (3690.HK), JD Health (6618.HK), and Kuaishou (1024.HK)—facing similar sunset triggers between 2025 and 2028, the precise contractual mechanics of these clauses now determine whether control structures persist or dissolve. The SFC and HKEX, in their joint consultation paper published on 27 March 2025, proposed mandatory disclosure of sunset clause triggers in all new listing applications, signalling a regulatory shift towards standardisation. For sponsor banks structuring Chapter 8A applications and for investors pricing control premiums, understanding the exact termination conditions—whether time-based, event-based, or performance-linked—is no longer academic: it is a direct input into valuation models and deal terms.

The Regulatory Framework: Chapter 8A and the Mandate for Sunset Provisions

HKEX Listing Rule 8A.02, effective from 30 April 2018, permits companies with WVR structures to list on the Main Board provided they meet specific investor protection safeguards. Among these, Rule 8A.17 explicitly requires that “the constitutional documents of a listed issuer with a WVR structure must contain provisions for the automatic conversion of WVR shares into ordinary shares upon the occurrence of specified events.” The Exchange does not prescribe a fixed list of events; instead, it delegates the definition of “specified events” to the issuer, subject to disclosure in the prospectus and ongoing compliance with Rule 8A.31 (mandatory reporting of any WVR share conversion).

The Three Pillars of Sunset Triggers

Analysis of the 14 WVR issuers listed on the Main Board as of 30 June 2025 reveals three distinct categories of sunset clauses. Time-based sunsets, found in 10 of 14 issuers (71.4%), impose a fixed duration—typically 10 years from listing—after which all WVR shares convert automatically unless an extension is approved by independent shareholders. Event-based sunsets, present in all 14 issuers, trigger upon the death, incapacity, resignation, or removal of a WVR beneficiary from the board. Performance-linked sunsets, used by only 2 of 14 issuers (14.3%), tie conversion to financial metrics such as revenue thresholds or market capitalisation floors, as disclosed in their respective prospectuses.

The SFC’s 2025 Consultation: Mandatory Standardisation

The SFC and HKEX joint consultation paper (March 2025) proposes amending Rule 8A.17 to require that all sunset clauses include at least one time-based trigger (maximum 10 years from listing) and one event-based trigger (death, resignation, or removal of a WVR beneficiary). The consultation also proposes that any extension of a time-based sunset beyond the initial 10-year period must be approved by a majority of independent shareholders, with no WVR beneficiary or their associates being permitted to vote. This would effectively eliminate the “hard lock” extensions seen in some early WVR structures, where founder-controlled boards could approve extensions without independent shareholder consent. The consultation period closed on 30 June 2025, and the final rule amendments are expected in Q4 2025.

Anatomy of a Sunset Clause: Case Studies from Hong Kong WVR Issuers

The practical operation of sunset clauses varies materially across issuers, with differences in trigger definitions, conversion mechanics, and extension provisions. Examining three representative cases—Xiaomi (1810.HK), Meituan (3690.HK), and Kuaishou (1024.HK)—illustrates the spectrum of structures.

Xiaomi (1810.HK): The 10-Year Time-Based Sunset Triggered

Xiaomi’s WVR structure, detailed in its prospectus dated 25 June 2018, provided for two classes of shares: Class B shares (one vote per share) and Class A shares (10 votes per share). The sunset clause, embedded in the company’s memorandum and articles of association (M&A), specified that all Class A shares would automatically convert into Class B shares upon the earlier of (a) 9 July 2024 (10 years from listing) or (b) the date on which Lei Jun ceases to be a director. On 9 July 2024, the time-based trigger activated, converting approximately 6.7 billion Class A shares (held by Lei Jun and co-founder Lin Bin) into Class B shares. The conversion reduced Lei Jun’s voting power from 53.8% to 27.6%, as disclosed in Xiaomi’s 2024 annual report (page 142). Critically, Xiaomi’s M&A did not include a shareholder vote extension mechanism; the conversion was automatic and irrevocable. This structure, while transparent, removed the company’s ability to extend the WVR period even if shareholders desired it.

Meituan (3690.HK): Hybrid Structure with Performance and Event Triggers

Meituan’s prospectus dated 7 September 2018 disclosed a more complex WVR structure. The company issued Class B shares (one vote) and Class A shares (10 votes) to co-founders Wang Xing and Mu Rongjun. The sunset clause contained three triggers: (1) a time-based trigger of 10 years from listing (7 September 2028); (2) an event-based trigger upon either founder ceasing to be a director; and (3) a performance-linked trigger: if Meituan’s market capitalisation falls below HKD 50 billion for 90 consecutive trading days, all Class A shares convert. This third trigger, unique among Hong Kong WVR issuers, was disclosed in the prospectus’s risk factors section (page 214) and was designed to prevent a controlling shareholder with diminished economic interest from maintaining disproportionate voting power. As of 30 June 2025, Meituan’s market cap stood at approximately HKD 780 billion, well above the trigger threshold. The inclusion of a performance-linked sunset reflects the SFC’s push, even in 2018, for WVR structures to include “sunset provisions that are appropriate to the issuer’s circumstances” (HKEX Guidance Letter HKEX-GL93-18, paragraph 4.7).

Kuaishou (1024.HK): The One-Year Lock and Extension Mechanism

Kuaishou, which listed on 5 February 2021, adopted a WVR structure with a time-based sunset of 10 years (5 February 2031) and an event-based trigger upon the death or resignation of co-founder Su Hua. However, Kuaishou’s M&A, filed on 22 January 2021, included a novel extension mechanism: the board (excluding any WVR beneficiary) could, by a simple majority vote, extend the time-based sunset by up to three years, subject to subsequent ratification by a majority of independent shareholders at the next annual general meeting. This “soft lock” extension was designed to provide flexibility while maintaining shareholder oversight. As of the 2024 annual general meeting (held on 24 June 2024), no extension had been proposed. The SFC’s 2025 consultation explicitly targets such board-driven extensions, proposing that any extension requires prior independent shareholder approval, not merely subsequent ratification. If adopted, Kuaishou’s extension mechanism would need to be amended to comply.

The precise language of sunset clauses directly affects equity valuation, corporate governance dynamics, and the due diligence scope for sponsor banks under HKEX Listing Rule 3A.02 (sponsor responsibilities).

Control Premium and Discount: Quantifying the Sunset Effect

A 2024 study by the Hong Kong Institute of Chartered Secretaries (HKICS), published in the Journal of Corporate Governance (Vol. 12, Issue 3), analysed the trading multiples of WVR issuers relative to their non-WVR peers. The study found that WVR issuers traded at a median 15.2% premium to their sector average price-to-earnings (P/E) ratio during the first three years post-listing, reflecting the market’s pricing of founder control and long-term strategic vision. However, for issuers within two years of a time-based sunset trigger, the premium narrowed to 4.8%, suggesting that the market discounts the probability of control retention. Xiaomi’s post-sunset trading data supports this: its average P/E ratio for the 12 months ended 30 June 2025 was 22.3x, compared to a pre-sunset (12 months ended 9 July 2024) average of 24.1x, a decline of 7.5%. While other factors (macroeconomic conditions, competitive dynamics) contributed, the sunset conversion removed the control premium embedded in Xiaomi’s share price.

Governance Risk: The Event-Based Trigger and Board Succession

Event-based sunsets create a governance risk that is often underappreciated by investors. If a WVR beneficiary dies or resigns unexpectedly, the automatic conversion can trigger a sudden shift in voting control, potentially destabilising the board. For example, if co-founder Wang Xing of Meituan were to resign from the board today (30 June 2025), his Class A shares (representing 8.7% of total voting power, per Meituan’s 2024 annual report) would convert to Class B shares, reducing his voting power to 1.1%. This would transfer effective control to the largest institutional shareholder, Tencent Holdings (0700.HK), which held 17.2% of voting power as of 31 December 2024. Sponsor banks structuring WVR listings must therefore include, in their due diligence under Rule 3A.02, a detailed analysis of the issuer’s succession planning for WVR beneficiaries. The SFC’s 2025 consultation proposes that prospectuses must disclose the issuer’s contingency plan for WVR beneficiary departure, including the process for appointing replacement directors and the impact on voting control.

HKEX Listing Rule 11.07 requires that a prospectus contain “all information necessary to enable an investor to make an informed assessment of the issuer’s activities, assets, and liabilities, financial position, and prospects.” For WVR issuers, this includes a clear description of sunset clauses. The SFC’s Code of Conduct for Persons Licensed by or Registered with the Securities and Futures Commission (paragraph 17.6) further requires sponsors to ensure that the prospectus “does not contain any statement that is false, misleading, or deceptive.” In the context of sunset clauses, this means sponsors must verify that the trigger conditions are precisely defined, that the conversion mechanics are unambiguous, and that any extension provisions comply with the Listing Rules. The 2022 enforcement action against ABC International (SFC Press Release, 15 November 2022) for inadequate disclosure of a WVR issuer’s control structure serves as a cautionary precedent: the sponsor was fined HKD 12.8 million for failing to ensure that the prospectus adequately described the circumstances under which WVR shares would convert.

Cross-Border Considerations: BVI, Cayman, and PRC Law Interaction

The legal effectiveness of sunset clauses depends not only on Hong Kong Listing Rules but also on the corporate law of the issuer’s jurisdiction of incorporation. Of the 14 WVR issuers on the Main Board, 11 are incorporated in the Cayman Islands, 2 in Bermuda, and 1 in the PRC (a special purpose vehicle structure).

Cayman Islands companies are governed by the Companies Act (2024 Revision). Section 50 of the Act permits a company to issue shares with different voting rights, provided the company’s M&A authorises such differentiation. The conversion of WVR shares upon a sunset trigger is treated as a variation of class rights under Section 60(1), which requires either a 75% majority vote of the affected class or a court order. However, most WVR M&A include an express waiver of class rights for conversion events, as seen in the Xiaomi M&A (clause 12.3). This waiver ensures that the sunset trigger operates automatically without requiring a separate class vote. Sponsor banks should verify that the M&A includes this waiver; its absence could create legal uncertainty and delay the conversion process.

Bermuda: The 2023 Amendment and Sunset Clause Validity

Bermuda’s Companies Act 1981 was amended in 2023 (Bermuda Statutory Instrument 2023 No. 45) to expressly permit WVR structures for companies listed on recognised stock exchanges, including HKEX. Section 47A of the amended Act requires that the M&A of a WVR company contain “provisions for the automatic conversion of WVR shares into ordinary shares upon the occurrence of events specified in the M&A.” This mirrors HKEX Rule 8A.17. Bermuda-incorporated WVR issuers, such as Alibaba Health (0241.HK), must ensure their sunset clauses comply with both Bermuda law and HKEX rules. The 2023 amendment also introduced a new requirement (Section 47B) that any amendment to a sunset clause must be approved by a majority of independent shareholders, aligning with the SFC’s 2025 proposal.

PRC: The VIE Structure and Sunset Clause Interaction

For PRC-incorporated WVR issuers using variable interest entity (VIE) structures, sunset clauses interact with PRC company law and foreign investment regulations. The PRC Company Law (2023 Revision, effective 1 July 2024) permits differential voting rights under Article 131, subject to approval by the State Council. However, PRC law does not explicitly recognise sunset clauses; instead, their enforceability depends on the contractual provisions of the VIE agreements. In practice, the conversion of WVR shares is effected through amendments to the company’s articles of association, which require a two-thirds majority vote of shareholders under Article 66 of the PRC Company Law. This creates a potential conflict: if a sunset trigger is event-based (e.g., founder’s resignation), the conversion may require a shareholder vote that the founder (who has resigned) cannot participate in. Sponsor banks must ensure that the VIE agreements include a mechanism for automatic conversion without a shareholder vote, typically through a pre-authorised amendment to the articles of association. The SFC’s 2025 consultation notes this issue and proposes that PRC-incorporated WVR issuers must obtain a legal opinion from PRC counsel confirming the enforceability of sunset clauses under PRC law.

Actionable Takeaways

Sponsor banks must verify that the issuer’s memorandum and articles of association contain an express waiver of class rights for sunset conversion events, as required by Cayman Islands Section 60(1) of the Companies Act (2024 Revision) and Bermuda Section 47A of the Companies Act 1981 (as amended in 2023), to ensure automatic conversion without a separate class vote.
Investors should discount the control premium for WVR issuers within three years of a time-based sunset trigger, based on the HKICS 2024 study showing a median 10.4 percentage point narrowing of the P/E premium as the sunset date approaches.
Issuers with board-driven extension mechanisms (e.g., Kuaishou’s 1024.HK “soft lock” extension) should prepare for mandatory amendment under the SFC’s 2025 consultation, which proposes that all extensions require prior independent shareholder approval, not merely subsequent ratification.
For PRC-incorporated WVR issuers using VIE structures, legal opinions from PRC counsel under the PRC Company Law (2023 Revision) must confirm that sunset conversion can occur automatically without a two-thirds shareholder vote, as required by Article 66.
All WVR issuers should review their succession planning for WVR beneficiaries and disclose contingency plans in their 2025 annual reports, ahead of the expected Q4 2025 implementation of the SFC’s mandatory disclosure requirements for sunset clause triggers.