INDIANAPOLIS, April 23, 2021 /PRNewswire/ — Calumet Specialty Products Partners, L.P. (NASDAQ: CLMT) (the “Partnership,” “Calumet,” “we,” “our” or “us”) announced today that it plans to … Continue reading Calumet Specialty Products Partners, L.P. to Release First Quarter 2021 Results on May 7, 2021