A private investment in public equity, often called a PIPE deal, involves the selling of publicly traded common shares or some form of preferred stock or convertible security to private investors. It is an allocation of shares in a public company not through a public offering in a stock exchange. PIPE deals are part of the primary market. In the U.S., a PIPE offering may be registered with the Securities and Exchange Commission on a registration statement or may be completed as an unregistered private placement.