Diane Costigan

Director of Coaching & Well-Being, Winston & Strawn

Diane Costigan serves as Winston & Strawn’s director of coaching and well-being. As a seasoned executive and health coach, Diane works with all levels of attorneys and senior professional staff to drive performance, career, and well-being related goals. She leverages her various coaching certifications, her consulting background, and more than 20 years of experience in the legal service industry to help attorneys and staff reach the highest level of performance and engagement.

Prior to joining Winston & Strawn, Diane was a partner and head of the coaching practice for a nationally recognized legal talent management consulting firm serving Global 100 law firms. She also spent 10 years at a Global 100 law firm overseeing professional development, recruiting, legal personnel, and diversity.

Diane is a prolific writer and frequent speaker on talent development in the legal services industry. She has been quoted in Forbes, Law360, and Law Practice Magazine.