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Related to suicide pill: potassium cyanide
An antitakeover measure stipulating that shareholders on the receiving end of a hostile takeover may buy shares in their own company at a price below fair market value. Once the acquisition is complete, the provision allows these same shareholders to buy more shares in the new company for below market value. This forces shareholders in the acquiring company to suffer a devaluation and dilution of their own shares. This is done to discourage hostile takeovers among the shareholders of the acquiring companies. In essence, a suicide pill is identical to a poison pill except for degree; the term suicide pill indicates that the target company may intentionally go bankrupt, rather than simply weaken itself.
A poison pill provision so devastating to the target of a takeover attempt that the target company may have to be liquidated to satisfy its creditors. For example, the company's directors may institute a suicide pill giving stockholders the right to exchange their stock for debt if a raider acquires more than a specified percentage of the company's outstanding shares. The tremendous increase in debt will effectively doom the target company if the takeover attempt is successful.