Recent surveys show that 24% of independent directors in Russel 3,000 firms have continuously served on their boards for fifteen years or more. Based on a sample of S&P 1500 firms over the period 1998-2012, we document strong positive effects on financial performance for firms with one, very...

We exploit the arrival of industry-wide synergistic merger waves to identify whether classifiedboards deter takeover bids. In a stylized model, we show that when target classified boards arecostly to bidders, their negative effect on takeover likelihood is more pronounced during mergerwaves....