Mary Frontczak


Mary Frontczak was named chief legal officer and corporate secretary in November 2019. In this role, Ms. Frontczak oversees all legal affairs for the company. This includes corporate governance, 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 nearly three decades of legal experience. Prior to joining Compass Minerals, Ms. Frontczak served as senior vice president and general counsel at POET, an ethanol and other bio refined products producer. Prior to POET, she headed the legal department at Bunge North America, an agribusiness and food ingredient company. Additionally, she 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.