Calumet CFO Vince Donargo to retire in April 2024, David Lunin joins as CFO Designate

INDIANAPOLIS, Sept. 12, 2023 /PRNewswire/ — Calumet Specialty Products Partners, L.P. (NASDAQ: CLMT) (the “Partnership,” “Calumet,” “Company,” “we,” “our” or “us”), today announced that Vince Donargo has elected to step down as CFO on December 31, 2023, and he will continue in an…