Lockdown A specified period when an employee of a public company is barred from selling - and occasionally buying - his or her company's stock. Investopedia Says: These types of equity transaction restrictions can be imposed by securities regulators or underwriting firms if a company has recently issued public securities. They can also be self-imposed by a corporation as an impetus for employees to retain company stock. Related Terms: Employee Stock Option - ESO Insider Trading Open-Market Transaction Securities & Exchange Commission - SEC Share Purchase Rights |