Mary Frontczak


Mary Frontczak joined Compass Minerals as chief legal officer and corporate secretary in November 2019. Ms. Frontczak oversees all legal affairs for the company, which includes corporate governance, SEC reporting, commercial matters, merger and acquisition activity, litigation oversight, environmental matters, corporate compliance, intellectual property and labor and employment law.

Ms. Frontczak brings to Compass Minerals almost three decades of legal experience. She joins the company from POET, an ethanol and other bio refined products producer, where she served as senior vice president and general counsel. Prior to POET, she headed the legal department at Bunge North America, an agribusiness and food ingredient company. Additionally, she has held various leadership and legal positions at Peabody Energy Corporation and The May Department Store Company, as well as managing commercial litigation matters with private firms early in her career.

Ms. Frontczak holds a Bachelor of Arts from Saint Louis University and a Juris Doctor from Saint Louis University School of Law. She earned her Master of Business Administration from Washington University, John M. Olin School of Business in St. Louis, Missouri.