This table presents the percentage of firms with each provision between 1990 and 1998. The data are drawn from the IRRC Corporate Takeover Defenses publications [Rosenbaum 1990, 1993, 1995, 1998] and are supplemented by data on state takeover legislation coded from Pinnell [2000]. See Appendix 1 for detailed information on each of these provisions. The sample consists of all firms in the IRRC research universe except those with dual class stock.