Mark K. Castiglia

Sidley Austin LLP is a premier legal adviser with over 2000 lawyers in 20 offices worldwide. Sidley Austin is based in Chicago, IL and has subsidiaries in Germany, Hong Kong, United States, United Kingdom, and Japan. The firm has been providing superior client service for over 150 years and has a diverse group of legal professionals from many cultures who are dedicated to teamwork and collaboration. Sidley Austin has forged enduring relationships with the business community and serves a varied and high-caliber group of market leaders, many of whom are pioneers in their respective industries and professions. The firm is committed to pro bono service and its lawyers and staff devote more than 100,000 hours annually to serving those most in need.