Editor’s note: This is general educational information about how one exchange regulates share structures with unequal voting rights. It is not investment advice and does not describe any particular company. It is based on the rulebooks and index rules listed at the end.
Analysis: the sunset is written into the register, not the calendar
Many jurisdictions debate time based sunsets, where extra votes expire after a fixed number of years. Singapore’s rules take a different route. The extra votes are attached to a named individual’s continued service and to their continued ownership, so the structure ends when the reason for granting it ends. That makes the conversion provisions a personnel question as much as a capital structure question, and it puts a company’s disclosure about the health, tenure and succession of its responsible directors at the centre of what a reader should follow.
The design also constrains what unequal voting can be used for. Because a reverse takeover, a delisting, a change to the constitution or the appointment of independent directors and auditors all fall under the enhanced voting process, the extra votes cannot deliver a change in the company’s identity or dismantle its oversight. They deliver control of the ordinary business of the meeting, including the ordinary election of executive directors and routine mandates, which is a narrower prize than the ten to one ratio suggests.
There is a cost outside the rulebook that the rulebook does not mention. Under the FTSE ST Index Series ground rules, version 6.2 dated August 2026, a company assigned a developed market nationality must have greater than 5% of its voting rights, aggregated across all equity securities including those that are not listed or traded, in the hands of unrestricted shareholders, or it is ineligible for index inclusion. The worked example in those rules is a dual class company: 100m listed Class A shares carrying one vote each with a free float of 65%, and 300m unlisted Class B shares carrying 10 votes each, produces 2.097% of voting rights in public hands, which fails the test. Companies with a free float of 15% or below are excluded in any case. A structure that satisfies the listing rules can therefore still fall outside the index that passive money tracks.
What none of this establishes is how any particular structure behaves in practice. The rules fix a ceiling, a fixed holder group, conversion triggers and a list of protected resolutions. They say nothing about whether the ratio at listing was near the cap, how close a responsible director is to retirement, or whether the ordinary shareholders’ 10% floor is met with room to spare. Those are facts to read out of the offer document, the annual report and the announcements the issuer is required to label on the cover page.
What the documents say
A dual class share structure is defined in the SGX Mainboard Rules as a structure that gives certain shareholders voting rights disproportionate to their shareholding, where shares in one class carry one vote and shares in another carry multiple votes. The second class, the multiple voting share, is neither listed nor traded. What the public buys is the ordinary voting share, one vote each. What sits behind it is a class the market cannot price, and the rules that govern it are mostly rules about when it stops existing.
The ceiling, and where it is fixed
Rule 210(10) caps each multiple voting share at no more than 10 votes. The number is set at the initial public offering and cannot be increased afterwards. The holders are named at the same moment: an issuer must specify who holds multiple voting shares at IPO, and where the Exchange permits a group of persons or an entity to be treated as a permitted holder group, the scope of that group is fixed at IPO and cannot be added to later. Someone outside the group at listing cannot be brought inside it afterwards.
A holder of multiple voting shares must be appointed as a responsible director, or in the case of a permitted holder group, a responsible director must be appointed for the group, and the Exchange may require another person to be appointed to that role. Voting power is tied to a named person carrying directors’ duties rather than to a shareholding held at arm’s length.
The conversion triggers, which are events rather than dates
The structure does not run on a clock. It runs on two events, both set out in Rule 210(10)(f), and on each the multiple voting share converts into an ordinary voting share on a one for one basis.
The first is transfer. If a multiple voting share is sold or transferred to any person, or in the case of a permitted holder group to anyone outside the group, it converts. The rules define sale or transfer broadly, covering any transfer of interest including beneficial interest or voting right, and whether or not for value. Extra votes cannot be sold.
The second is departure. If a responsible director ceases service as a director, whether through death, incapacity, retirement, resignation or otherwise, the shares convert, unless in the case of a permitted holder group a new responsible director is appointed. The premise is that the votes were granted to a person running the company, so they lapse when that person stops running it.
Both triggers can be waived, but only through the enhanced voting process, and with the interested parties abstaining. The Mainboard Rules define the enhanced voting process as a vote in which one multiple voting share is limited to one vote. A waiver of the conversion has to survive a poll on which the extra votes do not count.
Where the extra votes never applied in the first place
Rule 730B lists the matters that must always go through the enhanced voting process: changes to the constitutional documents, variation of rights attached to any class of shares, appointment and removal of independent directors, appointment and removal of auditors, a reverse takeover under Rule 1015, winding up, and delisting under Rule 1307. On those questions the structure is switched off and every share is worth one vote, with the ordinary voting thresholds still applying.
Three further constraints keep the ratio from drifting. Under Rule 803A an issuer may not issue further multiple voting shares except in a rights issue, bonus issue, scrip dividend scheme, consolidation or subdivision, in each case alongside an issue of ordinary voting shares, any such issue needs a special resolution, and no corporate action may raise the multiple voting class’s share of total voting rights above the level before the action. Holders of ordinary voting shares with at least 10% of total voting rights on a one share one vote basis must be able to convene a general meeting, and in any general meeting the votes that may be cast by ordinary shareholders who hold no multiple voting shares must be at least 10% of total voting rights. The majority of the audit, nominating and remuneration committees, including their chairs, must be independent.
Disclosure is continuous rather than confined to the prospectus. Rule 752 requires compliance with the substantive conditions on a continuing basis, Rule 753 requires a statement on the cover page of every announcement that the issuer has a dual class share structure, and the rules on offer documents and annual reports require the rationale, the associated risks, the matters subject to the enhanced voting process and the identity of the holders to be set out prominently. The framework was added to the Mainboard Rules on 26 June 2018. It has boundaries: an issuer listing as a special purpose acquisition company is not permitted to adopt a dual class share structure at IPO, and the Catalist Rules carry no equivalent provision for multiple voting shares.
