1. General: Person who holds an office of authority, command, or trust.
2. Corporate (UK): Person who acts in an official capacity on behalf of a firm, such as a company secretary, director, executive, manager, or other individual authorized to so act.
3. Corporate (USA): Person appointed by the board of directors of a firm, such as a president, CEO, vice president, etc., to manage the day-to-day business of the firm and to carry out the policies set down by the board.