Part XV Notifiable-Interest Thresholds for Hong Kong Listed Shares

Part XV makes significant interests in listed shares visible to the market. The analysis is not limited to shares registered in a person's own name; interests and voting rights can be attributed under statutory rules.

The initial threshold

A person who becomes interested in 5% or more of a class of voting shares in a listed corporation generally enters the disclosure regime. Specified percentage levels include each whole percentage point above the initial threshold, so a change that crosses one of those levels can trigger a notice even when the person remains above 5%.

More than direct share ownership

Part XV contains detailed rules for interests held through controlled corporations, trusts, agreements, derivatives and other arrangements. A person may have an interest or short position without appearing as the registered shareholder. Analyze the relevant rights, voting power and statutory attribution provisions rather than relying only on the share register.

Changes and notices

A person may need to notify the listed corporation and the Exchange when the notifiable interest is acquired, changes across a specified level, its nature changes or it ceases to be notifiable. Part XV prescribes the form, recipients and timing. The deadline depends on the triggering event and the person involved, so use the current statutory provision and SFC guidance.

Compliance checklist

• Identify the relevant class of voting shares and the person's percentage interest.
• Apply attribution rules for controlled companies, trusts and agreements.
• Check whether the change crosses a specified percentage level or changes the nature of the interest.
• Determine whether a short position or derivative interest must be reported.
• File the prescribed notice with the required recipients within the applicable deadline.

The 5% threshold

Part XV generally requires a substantial shareholder to disclose an interest in 5% or more of any class of voting shares in a listed corporation. A person who crosses the threshold from below, or whose percentage crosses a prescribed level, must assess the notification duty. Do not calculate against all issued securities if the statutory denominator is the relevant class of voting shares.

Interest is broader than registered ownership

The regime can attribute interests held through controlled corporations, agreements, trusts, family or other statutory relationships, and interests in shares over which a person has voting or disposal power. The registered holder may therefore differ from the person who must disclose. Trace the ownership chain and identify who can exercise or control the relevant rights under the SFO definitions.

Long positions and short positions

Part XV disclosure can apply to interests and short positions. A person may need to disclose both, and the calculation should not simply net a short position against a long position unless the statute provides for that treatment. Examine the nature of the interest, the shares concerned and relevant exemptions separately. A percentage holding alone may not describe the full reportable position.

Relevant events beyond crossing 5%

Notifications can arise when a person becomes a substantial shareholder, crosses a prescribed percentage level, ceases to have a notifiable interest, or changes the nature of an interest. Corporate actions, derivatives, lending, security interests and voting arrangements may change the analysis. Identify the event and compare the person’s position immediately before and after it.

Filing deadline depends on the person and event

Part XV has prescribed notification periods that vary by person and circumstance. Substantial shareholders, directors and chief executives do not necessarily share the same deadline. Use the statutory provision, SFC notes and current Disclosure of Interests filing forms to determine when the clock starts and how many business days apply. Do not carry one deadline across all filers.

How to calculate the percentage

Determine the relevant class of voting shares, the person’s deemed or direct interest, and the total number of issued shares in that class at the relevant time. Check share changes, treasury or cancelled shares and the statutory treatment of rights or short positions. Retain the calculation and source data so a filer can explain why a threshold was crossed or not crossed.

Online filing and records

Part XV notices are generally filed electronically through HKEX’s Disclosure of Interests Online System using the applicable prescribed form. The filer should retain confirmations, supporting ownership analysis, transaction records and evidence of timely submission. A form that is filed with an incorrect interest type or event date may not satisfy the substantive duty.

Exam checklist

Identify filer status; determine the interest and attribution; apply the 5% initial threshold and later percentage crossings; analyze changes in nature or cessation; calculate the correct deadline; and file the prescribed notice. Distinguish disclosure of interests from short-selling reporting and from the issuer’s separate announcement obligations.

Calculate percentage interests carefully

The 5% threshold is measured against the relevant voting shares of the listed corporation, not simply the number of shares a person personally purchased in the latest trade. The SFO’s attribution rules can treat interests held through controlled corporations, agreements or other specified arrangements as a person’s interests. The denominator can also change after an issuance, buyback or other corporate action, so the percentage should be recalculated when the share capital changes.

Keep separate calculations for long and short positions where the statutory regime requires them. Do not net a person’s short exposure against a long interest as if the two automatically cancel. The exam question may supply a chain of companies or a concert-party arrangement; trace the relevant voting power and identify the statutory attribution basis rather than stopping at the registered holder.

Recognize reportable changes after crossing 5%

Once a person is within the notification regime, a reportable event can include crossing the threshold, moving through percentage-level bands, changes in the nature of an interest, or a change in the capacity in which it is held, depending on the SFO provisions. A person can have a duty even when the overall percentage barely changes if the legal nature or attribution of the interest has changed.

The event date and the identity of the person with the duty matter. A director and a substantial shareholder may face different forms and filing timelines. A company secretary or broker may assist, but responsibility should not be assumed to shift away from the statutory notifier. Use the current prescribed form and filing channel and verify the event-specific deadline.

Exam takeaway

The initial Part XV threshold is generally 5% of a class of voting shares, with further specified levels and other reportable events. Ownership attribution and precise filing deadlines require applying the statutory rules.