Heritage-Crystal Clean Inc. announced the addition of Mary Pat Thompson to its Board of Directors. Ms. Thompson is currently serving as a board and audit committee member for H&E Equipment based out of Baton Rouge. Ms. Thompson has previously served as Chief Financial Officer and Treasurer of Taronis Fuels Inc. (‘Taronis'), and has served as a consultant at Bruckmann, Rosser, Sherrill & Co., since 2019.

Ms. Thompson graduated Summa Cum Laude from the University of Idaho with a B.S. in accounting and is a licensed Certified Public Accountant in Idaho. Ms. Thompson previously served as Senior Vice President of Finance and Administration and Chief Financial Officer of MWI Animal Health from August 2005 through her retirement in October 2018, with oversight of finance, inventory management, information technology, and human resources. Ms. Thompson also served as Vice President, Secretary and Chief Financial Officer of MWI Animal Health from June 2002 to August 2005.

Since 2015, she has served on Zion's Bank Business Advisory Board and the San Francisco Reserve's 12th District Economic Advisory Council, where she was Chairperson for 2019.