Wasserstein Group Discloses 4.6% Stake in Calumet Inc. (CLMT) via Schedule 13G/A
Aug 14, 2026
Wasserstein Management L.P. disclosed a 4.6% beneficial ownership stake in Calumet Specialty Products Partners via an amended Schedule 13G filing on June 30, 2026. The holding comprises approximately 3.96 million shares out of 87.1 million total outstanding shares.