This article explains, in general terms, how a market rule under the New Zealand Takeovers Code typically works. It is educational content only, not investment advice, and does not describe any specific current event, company or security.
Somewhere between 19.9% and 20% of a listed New Zealand company’s voting shares sits an invisible line that can turn an ordinary purchase into a legal obligation to buy out every other shareholder in the business. Cross it the wrong way, without an exemption or a court’s approval, and the buyer may be required to make a full takeover offer for the rest of the company, even if that was never the plan. Understanding why that line exists, and how a narrower set of “creeping” rules lets some shareholders edge past it in small steps, explains one of the more counterintuitive features of takeover regulation in markets that follow this model.
The 20% Threshold and the Full Offer Obligation
New Zealand’s Takeovers Code, administered by the Takeovers Panel, is built around a single organizing idea: control of a public company should not change hands, or be allowed to build toward change, without every shareholder getting a fair and equal opportunity to participate. The Code gives effect to this through what is often called the fundamental rule. A person, together with anyone treated as acting jointly with them, is generally barred from becoming the holder or controller of more than 20% of the voting rights in a Code company unless they follow one of a small number of permitted routes, chief among them a full takeover offer made to all shareholders on the same terms.
The 20% figure is not meant to mark the point at which a shareholder can outright control a company; in practice, influence often builds well before then. Instead, it is treated as the level at which a stake becomes large enough to give its holder a meaningfully greater ability to influence the company’s direction than other shareholders enjoy, which is why the Code treats crossing it as the trigger for extending an offer to everyone else, rather than allowing private negotiation with only a few large holders.
Why the Creeping Provisions Exist
If the 20% rule applied with no flexibility at all, it would freeze the shareholdings of large investors in place indefinitely, discouraging exactly the kind of ongoing investment that liquid share markets depend on. To address that, the Code carves out an allowance commonly referred to as the creeping provisions. A shareholder who already holds between 20% and 50% of a company’s voting rights may increase that holding by up to 5 percentage points within any rolling 12-month period without needing to make a full offer.
This is not a one-off allowance that resets on a fixed calendar date. Because the 12-month window rolls forward continuously, a holder’s permitted increase at any given moment depends on how much has already been acquired over the preceding year. Once a shareholder’s stake reaches 50%, the creeping allowance no longer applies in the same way, since the Code’s broader logic shifts once effective control has plainly changed hands.
Balancing Investor Protection With Market Flexibility
The gap between the strict 20% rule and the more permissive creeping band reflects a deliberate trade-off. Below 20%, the Code leaves ordinary share trading largely unregulated by these particular provisions, on the view that no single holder yet has outsized influence. Above 20%, it tightens sharply, requiring an all-shareholder offer for any move that would meaningfully increase control. The creeping provisions sit in between, acknowledging that an investor who has already cleared the threshold, whether through an earlier offer, an allotment, or another permitted mechanism, still has a legitimate reason to adjust its position gradually as market conditions change.
Similar mandatory bid thresholds and creeping allowances appear, in varying forms, in takeover regimes across other markets, including Australia and the United Kingdom, though the specific percentages and timeframes differ. The common thread is the same: a bright-line rule creates certainty about when the full protections of a takeover offer apply, while a narrower exception preserves enough flexibility for markets to keep functioning normally around it.
