Poison Put

What Is a Poison Put?

A poison put is a debt covenant that can give bondholders or lenders the right to require repayment if a specified change of control, board change, or takeover-related event occurs. It is called poison because the provision can make a hostile takeover more expensive or harder to finance.

The feature is usually embedded in a bond indenture, loan agreement, or other debt contract. If triggered, the company may have to repurchase debt, repay loans, or offer repayment at a specified price. That potential cash demand can deter an acquirer or force it to account for refinancing risk before pursuing the target.

How It Works

Debt investors care about who controls the issuer and how much leverage the company carries. A takeover can change both. A new owner may borrow more, sell assets, change strategy, weaken credit quality, or subordinate existing creditors. A poison put gives creditors a contractual exit if a defined event occurs.

The trigger may be a change in control, a ratings downgrade connected to a change in control, or a board-related event. The repayment price may be par, a premium to par, or another formula. The exact language matters because small drafting differences can decide whether the put right is actually triggered.

Why Companies Use Them

Companies may agree to poison puts because creditors demand protection before lending. A change-of-control put can make debt easier to sell or reduce the interest rate investors require. In that sense, the provision is not only defensive; it is also a credit-protection tool.

At the same time, the provision can affect takeover economics. If an acquirer must repay or refinance a large amount of debt immediately after gaining control, the acquisition becomes more expensive. That can discourage hostile bidders or give the target board more negotiating leverage.

Credit Protection Versus Takeover Defense

The same clause can serve both roles. The policy question is whether the provision fairly protects creditors from a riskier borrower or unfairly entrenches management by discouraging bids that could benefit shareholders.

What Investors Should Read

Bondholders should read the definition of change of control, the required offer price, timing, notice procedures, exceptions, and whether a ratings downgrade is required. Equity investors should read whether the provision could make a takeover less likely, reduce deal proceeds, or complicate financing.

Board-approval language can be especially important. Some provisions are triggered only if a majority of continuing or approved directors is replaced. Others focus on ownership thresholds. A provision that looks powerful in a summary may be narrower in the actual indenture.

Risks and Tradeoffs

A poison put can improve creditor protection but create friction for shareholders. It can also create refinancing pressure if a legitimate strategic acquisition triggers repayment. If many debt instruments have similar provisions, the required cash outflow can become large enough to affect the whole deal.

For investors, the practical takeaway is to avoid treating the phrase as a generic label. The economics live in the contract: trigger, price, timing, exceptions, and whether the company can satisfy the repayment obligation without harming the business.