Calumet Provides Update After Latest U.S. EPA Small Refinery Exemption Decision

INDIANAPOLIS, Sept. 2, 2026 /PRNewswire/ -- Calumet, Inc. (NASDAQ: CLMT) ("Calumet, ""we," "our" or "us") provided an update regarding the recent U.S. Environmental Protection Agency ("EPA") decision on small refinery exemptions. On Monday, August 31, the EPA notified Calumet that we were...