Diane Irvine has served on our board of directors since November 2011 and as chairperson since 2015. She served in executive leadership roles, most recently as Chief Executive Officer at Blue Nile, Inc., an online retailer of diamonds and fine jewelry, from 1999 to 2011. Prior to Blue Nile, Irvine served as Vice President and Chief Financial Officer of Plum Creek Timber Company, Inc., a timberland management and wood products company. From 1981 to 1994, she served in various capacities, most recently as a Partner, with Coopers and Lybrand LLP, an international accounting firm. Irvine currently serves on the boards of Funko, Inc., a leading pop culture consumer products company, and D.A. Davidson Companies, a financial services firm. She previously served on the boards of Farfetch Limited, Casper Sleep Inc., XO Group Inc. (now known as The Knot Worldwide) and Rightside Group Ltd. Irvine holds a B.S. in Accounting from Illinois State University, an M.S. in Taxation from Golden Gate University and a Doctorate of Humane Letters from Golden Gate University. The Board has determined that Irvine qualifies as an "audit committee financial expert," as defined in applicable SEC rules.