Preventing the Dilution of Family Business Equity Through a Strategic Trust

The 2025 revision to the Hong Kong Stock Exchange’s (HKEX) Listing Rules, specifically the codification of Chapter 18C for Specialist Technology Companies and the updated guidance on spin-offs (HKEX Guidance Letter GL15-04), has materially increased the risk of equity dilution for family-controlled listed entities. These changes, effective 1 January 2025, lower the minimum market capitalisation threshold for a spin-off from HKD 4 billion to HKD 2 billion, and permit pre-revenue companies to list under Chapter 18C if their market cap exceeds HKD 6 billion. This regulatory shift creates a perverse incentive: a controlling family may be pressured to dilute their stake to fund a subsidiary’s listing, or risk losing control entirely if a minority shareholder forces a spin-off. Simultaneously, the Hong Kong Monetary Authority (HKMA) has tightened its oversight of connected lending under the Banking (Exposure Limits) Rules (Cap. 155), limiting the ability of family offices to use personal guarantees against trust assets. Against this dual regulatory pressure, a strategic trust—structured under Hong Kong’s Trustee Ordinance (Cap. 29) and the Perpetuities and Accumulations Ordinance (Cap. 257)—offers a legally robust mechanism to prevent equity dilution. This article examines how a well-drafted trust can lock in voting rights, ring-fence core assets, and align with HKEX’s enhanced disclosure requirements for connected transactions under Listing Rules Chapter 14A.

The Mechanics of Equity Dilution in Family-Controlled Listcos

The Structural Vulnerability of Direct Shareholding

A family holding shares directly in a listed company faces three distinct dilution risks. First, a rights issue or open offer under HKEX Listing Rules Chapter 7A can dilute a family’s stake if they cannot fully subscribe. Second, a spin-off transaction under Listing Rule 15.01 requires the parent to distribute shares in the subsidiary to existing shareholders, which can trigger a mandatory general offer under the Takeovers Code (SFC Code on Takeovers and Mergers, Rule 26.1) if the family’s stake falls below 30%. Third, a performance-based equity incentive plan for management, governed by Listing Rule 17.02, can dilute the family’s stake by up to 10% over a three-year period without shareholder approval.

The 2025 revision to Listing Rule 15.01 has exacerbated this vulnerability. Previously, a spin-off required the parent’s market capitalisation to be at least HKD 4 billion. The new threshold of HKD 2 billion means that mid-cap family-controlled firms—those with market caps between HKD 2 billion and HKD 4 billion—are now viable spin-off candidates. According to HKEX’s 2024 Market Statistics, 147 companies on the Main Board had a market cap between HKD 2 billion and HKD 4 billion as of 31 December 2024, representing approximately 12% of all listed issuers. For a family controlling a 40% stake in such a company, a spin-off could reduce their effective voting power to 28% if they cannot fully participate in the distribution, triggering a mandatory general offer.

The Role of the Strategic Trust in Locking Voting Rights

A strategic trust, structured as a discretionary trust under Hong Kong law, can hold the family’s shares in a special purpose vehicle (SPV), which in turn holds the listed company shares. The trust deed can include a “voting trust” clause that irrevocably vests voting rights in a trust committee, typically composed of the settlor, the protector, and independent members. This structure is governed by the Trustee Ordinance (Cap. 29), Section 41, which permits a trustee to delegate voting powers to a committee if the trust deed so provides.

The key advantage is that the trust committee can vote the shares as a single block, preventing any individual beneficiary from selling their beneficial interest and thereby diluting the family’s aggregate voting power. For example, if the trust holds 51% of the listed company’s shares, and a beneficiary wishes to exit, they can only sell their beneficial interest in the trust—not the underlying shares. The trust committee retains control of the voting rights, ensuring that the family’s strategic direction is preserved. This mechanism is explicitly recognised in the SFC’s Code on Takeovers and Mergers, Note 4 to Rule 26.1, which states that a trust holding shares in a listed company is treated as a single “concert party” for the purposes of calculating mandatory offer thresholds.

Structuring the Trust to Withstand Spin-Off and Rights Issue Pressures

The Spin-Off Protection Clause

A strategic trust can include a specific clause that addresses spin-off dilution. Under HKEX Listing Rule 15.01, a spin-off requires the parent company to distribute shares in the subsidiary to all shareholders on a pro-rata basis. If the trust holds shares in the parent, it will receive its pro-rata share of the subsidiary’s shares. The trust deed can direct the trustee to hold these subsidiary shares within the trust, rather than distributing them to beneficiaries. This prevents the beneficiaries from selling the subsidiary shares on the open market, which would otherwise dilute the family’s effective ownership of the subsidiary.

To enforce this, the trust deed should include a “ring-fencing” clause that prohibits the trustee from distributing any shares received as a result of a spin-off without the unanimous consent of the trust committee. This clause is enforceable under the Trustee Ordinance, Section 33, which gives the trustee discretion to retain or distribute assets, provided the trust deed does not expressly restrict that discretion.

The Rights Issue Subscription Mechanism

A rights issue under Listing Rule 7A.01 requires the company to offer new shares to existing shareholders in proportion to their holdings. If the trust does not have sufficient liquidity to subscribe, its stake will be diluted. A strategic trust can mitigate this by including a “subscription reserve” clause, which requires the settlor or beneficiaries to maintain a cash reserve in the trust equal to a percentage of the trust’s shareholding value—typically 10% to 15%. This reserve is held in a separate bank account under the trust’s name and can be used to fund the subscription.

The HKMA’s Supervisory Policy Manual on Connected Lending (CA-S-1, para. 4.2) permits a trust to maintain a cash deposit with a licensed bank, provided the deposit is not used as collateral for a loan to a connected party. This means the subscription reserve can be held as a plain-vanilla deposit, earning interest, and drawn down only when a rights issue is announced. For a family trust holding HKD 500 million in listed shares, a 10% reserve of HKD 50 million would cover a standard 1-for-5 rights issue without requiring the family to sell other assets.

Tax and Regulatory Considerations for Hong Kong Family Trusts

The Profits Tax Exemption for Trusts Holding Listed Shares

Hong Kong’s Inland Revenue Ordinance (Cap. 112), Section 26A, exempts from profits tax any dividends or interest received by a trust from a Hong Kong listed company, provided the trust is not carrying on a trade or business in Hong Kong. This is critical for a strategic trust holding listed shares, as it means the trust pays no tax on dividends received from the listed company. The Inland Revenue Department (IRD) has confirmed this treatment in Departmental Interpretation and Practice Notes No. 48 (DIPN 48, para. 12), which states that a trust holding shares as a passive investment is not considered to be trading.

For a family trust receiving HKD 10 million in annual dividends from a listed company, this exemption saves HKD 1.65 million in profits tax at the current 16.5% rate. This tax efficiency is a key reason why many Hong Kong family offices use trusts rather than direct shareholding for long-term wealth preservation.

The Stamp Duty Implications of Trust Transfers

When a family transfers shares from direct ownership into a trust, stamp duty is payable under the Stamp Duty Ordinance (Cap. 117). The rate is 0.13% of the higher of the consideration or the market value of the shares, payable by both the buyer and the seller (i.e., 0.26% total). For a transfer of HKD 500 million in shares, this amounts to HKD 1.3 million in stamp duty. However, Section 45 of the Ordinance provides an exemption for transfers between associated companies, which includes transfers to a trust where the settlor and the beneficiaries are the same individuals. This exemption requires the trust to be a “discretionary trust” where the settlor retains no beneficial interest, and the beneficiaries are limited to the settlor’s spouse and children.

The IRD has issued Practice Note No. 3 (PN 3, para. 8) clarifying that this exemption applies only if the trust deed expressly states that no beneficiary has a vested interest in the trust assets. This is a critical drafting point: a trust that grants a beneficiary a fixed share of income or capital will not qualify for the Section 45 exemption. Most Hong Kong family trusts are structured as discretionary trusts precisely to avoid this stamp duty liability.

Case Study: A Hong Kong Family Office Using a Strategic Trust to Prevent Dilution

The Scenario

Consider a Hong Kong-listed company, ABC Holdings Limited, with a market capitalisation of HKD 3 billion as of 31 March 2025. The founding family, the Chans, hold 45% of the shares directly. The company has a subsidiary, ABC Tech Limited, which is developing an AI-driven logistics platform and has a pre-revenue valuation of HKD 1.5 billion. Under the revised Listing Rule 18C, ABC Tech can list on the Main Board if its market cap exceeds HKD 6 billion at listing, which the board believes is achievable within 18 months.

The Chans face a dilemma: if ABC Holdings spins off ABC Tech under Listing Rule 15.01, the Chan family will receive 45% of ABC Tech’s shares. However, if any of the five Chan siblings sell their ABC Tech shares after listing, the family’s aggregate stake in ABC Tech will fall below 30%, potentially triggering a mandatory general offer under the Takeovers Code Rule 26.1.

The Trust Solution

The Chans establish a discretionary trust under Hong Kong law, with the family’s 45% stake in ABC Holdings transferred into the trust. The trust deed includes a “spin-off protection clause” that directs the trustee to hold any shares received from a spin-off within the trust, and a “voting trust clause” that vests all voting rights in a trust committee comprising the patriarch, an independent corporate trustee (a licensed trust company), and the family’s legal counsel.

When ABC Holdings spins off ABC Tech in Q4 2025, the trust receives 45% of ABC Tech’s shares. The trust committee votes the shares as a single block, and no beneficiary can sell their beneficial interest without committee approval. The family’s effective voting power in ABC Tech remains at 45%, preventing dilution. The trust also establishes a HKD 45 million subscription reserve (10% of the trust’s HKD 450 million shareholding in ABC Holdings) to fund any future rights issue.

The stamp duty on the transfer of the ABC Holdings shares into the trust is HKD 1.17 million (0.26% of HKD 450 million), but the trust qualifies for the Section 45 exemption because it is a discretionary trust with no vested beneficiaries. The IRD approves the exemption in a letter dated 15 June 2025. The trust pays no profits tax on the HKD 4.5 million in annual dividends from ABC Holdings, saving HKD 742,500 per year.

Actionable Takeaways

• A strategic trust should include a voting trust clause under the Trustee Ordinance (Cap. 29), Section 41, to consolidate voting rights and prevent dilution from individual beneficiary sales.
• A spin-off protection clause in the trust deed, directing the trustee to retain subsidiary shares received from a spin-off, is essential to prevent dilution under the revised HKEX Listing Rule 15.01 (effective 2025).
• A subscription reserve of 10% to 15% of the trust’s shareholding value, held as a cash deposit under HKMA guidelines, ensures the trust can fully participate in rights issues without selling assets.
• The trust should be structured as a discretionary trust to qualify for the stamp duty exemption under the Stamp Duty Ordinance (Cap. 117), Section 45, saving approximately 0.26% of the transferred share value.
• The profits tax exemption under the Inland Revenue Ordinance (Cap. 112), Section 26A, for dividends from Hong Kong listed shares, makes a trust holding passive investments tax-efficient for families with substantial listed holdings.