Jennifer G. Straumins has served as a member of the Board since July 2024 and previously served on the board of the General Partner from February 2021 to July 2024. Ms. Straumins serves on the board of directors of Wincoram Asset Management and ZXP Technologies. Ms. Straumins previously served as the chair of the board of directors of Maverick Performance Products, for which she was a founding member, until the company was acquired in 2024. Prior to founding Maverick Performance Products, Ms. Straumins was an employee of the Partnership for 13 years holding various positions. Prior to joining Calumet, Ms. Straumins held financial planning positions with Great Lakes Chemical Company and Exxon Chemical Company. Ms. Straumins holds a Bachelor of Engineering in Chemical Engineering from Vanderbilt University and a Master of Business Administration from the University of Kansas.