Core-Mark to Webcast Presentation From Oppenheimer 13th Annual Consumer Conference

| Source: Core-Mark Holding Company, Inc. Core-Mark Holding Company, Inc.

SOUTH SAN FRANCISCO, CA--(Marketwired - Jun 17, 2013) - Core-Mark Holding Company, Inc. (NASDAQ: CORE), one of the largest marketers of fresh and broad-line supply solutions to the convenience retail industry in North America, announced today that it will webcast its presentation from the Oppenheimer Consumer Conference on Tuesday, June 25, 2013 beginning at 2:55 p.m. Eastern.

The live webcast can be accessed at www.core-mark.com. An archived replay of the presentation will be available shortly after the live event is completed and will remain on Core-Mark's website for 30 days.

Core-Mark 
Core-Mark is one of the largest marketers of fresh and broad-line supply solutions to the convenience retail industry in North America. Founded in 1888, Core-Mark offers a full range of products, marketing programs and technology solutions to approximately 30,000 customer locations in the U.S. and Canada through 28 distribution centers (excluding two distribution facilities the Company operates as a third party logistics provider). Core-Mark services traditional convenience retailers, grocers, drug, liquor and specialty stores, and other stores that carry convenience products. For more information, please visit www.core-mark.com.