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Mandatory-bid rule

The rule protects relevant shareholders’ opportunity to exit after a control acquisition, subject to the applicable framework. Determine the interests counted, voting-right basis, concert-party rules, triggering events, price requirements, conditions and exemptions. A commonly quoted percentage from one jurisdiction is not a universal threshold. A friendly acquisition can trigger an obligation just as an opposed one can, and acquiring a minority economic interest does not by itself establish the answer. Consult the effective rules and regulator where required rather than infer an obligation from the label takeover.

Worked example

A purchaser increases its holding and advisers aggregate interests held with parties acting together. They test the applicable trigger and exemptions before deciding whether an offer obligation arises; they do not use a universal 30%rule.

Common mistake

Assuming every country uses the same threshold or that only hostile bidders can incur a mandatory offer obligation.

Where it appears in your exams

QualificationExamRelationshipPeriod
ACCA AFM Supporting September 2026–June 2027