In celebration of our 10th anniversary, we’re pleased to present this year’s Gender Diversity Index, an annual review of the status of women on the boards of Russell 3000 companies. Women now hold a historic 22.6 percent of the board seats of companies in the Russell 3000, consistent with the steady progress women have made gaining board seats over the past decade. In our first decade we achieved a lot of firsts: We were the first organization to lead an education and advocacy campaign that encouraged a national dialog about the issue of boardroom diversity. We were first to define gender diversity as a minimum of 20 percent women on public company boards. We introduced the first online directory of 3,000 companies showing the gender diversity of their boards and made it freely available to the general public.