CEO Duality – implies that the company’s CEO holds both the position of chief executive and the chair of the board of directors. The are pros and cons of that model, but investors usually prefer to separate the positions. If they don’t, then it is preferable that the company’s board consists of a ‘substantial’ majority of independent directors.
Lead Director – demand for Lead Director increased because of the presence of CEO duality, resulting from growing concern that duality places too much power in the hands of CEO, which may impede board independence.