This article is educational content explaining how a securities market regulatory mechanism generally works. It is not investment advice and does not describe any specific company, security, or current event.
A single share, bought on an ordinary trading day on the Johannesburg Stock Exchange (JSE), can be enough to change an investor’s legal position overnight. If that purchase pushes their total holding, together with anyone acting in concert with them, past 35% of a listed company’s voting rights, South African law stops treating them as simply a large shareholder. It treats them as a party now obliged, as a general rule, to offer to buy out every other shareholder in that company. This is the mandatory offer mechanism overseen by the Takeover Regulation Panel (TRP), and it exists to give minority investors a defined exit once effective control of a company has changed hands, regardless of whether the acquirer set out to seize control or simply crossed the line while accumulating a position.
Where the 35% Line Comes From
The mandatory offer rule sits in the Companies Act, 2008, and the Takeover Regulations that the TRP administers for “regulated companies,” a category that covers all public companies and certain other companies meeting specified criteria. The threshold is calculated on voting rights, not simply on the number of shares in issue, and it aggregates holdings across any persons “acting in concert,” meaning related parties or parties cooperating toward a common objective cannot each buy a stake below 35% and combine them to sidestep the obligation. Crossing the line can happen through an on-market purchase, an off-market transaction, the exercise or conversion of instruments carrying voting rights, or even passively, if a company’s share buy-back programme reduces the total shares in issue and mathematically lifts an existing holder’s percentage above the threshold without that holder buying anything at all.
What the Offer Must Look Like, and Who Checks It
Once the threshold is crossed, the acquirer generally must extend a comparable offer to every remaining shareholder, on terms no less favourable than those under which the triggering shares were acquired, and the offer must include a cash option if cash formed any part of the consideration used to build the stake. The process typically begins with a firm intention announcement released on the JSE’s Stock Exchange News Service, followed by a formal offer document sent to shareholders within a set timetable. Critically, the TRP reviews and must approve that offer document before it can be dispatched, and it enforces a “highest price” rule during the offer period: an offeror who buys shares at a higher price than the offer terms must generally raise the offer to match, so that no shareholder who deals directly with the acquirer is treated better than the wider shareholder base receiving the formal bid.
Obligations on the Target and the Cost of Ignoring the Rule
The target company’s board carries its own duties once a mandatory offer is triggered. It must typically constitute an independent board, made up of directors unconnected to the offer or the offeror, to consider the bid on behalf of minority shareholders. That independent board commissions an external, independent expert to produce a “fair and reasonable” opinion on the offer terms, which is circulated to shareholders alongside the offer document so they can make an informed decision. The target’s directors are also constrained from taking frustrating action, such as issuing new shares or disposing of material assets, without prior shareholder approval, precisely because such steps could unfairly block a properly triggered offer. Non-compliance carries real teeth: the TRP can direct that shares acquired in breach of the rules be disposed of, suspend the associated voting rights, or refer the matter for further compliance action, underscoring that the 35% threshold is not a technicality but a structural safeguard built into how control changes hands on the JSE.
