Core-Mark Announces First Quarter Diluted EPS of $2.20

Market Wire, May, 2009

SEC Regulation G - Non-GAAP Information

This press release includes non-GAAP diluted earnings per share. We believe this non-GAAP financial measure provides meaningful supplemental information for investors regarding the performance of our business and facilitates a meaningful evaluation of our diluted earnings per share for the first quarter of 2009 on a comparable basis with the same periods in 2008. Our management uses this non-GAAP financial measure in order to have comparable financial results to analyze changes in our underlying business. This non-GAAP measure should be considered as a supplement to, and not as a substitute for, or superior to, financial measures calculated in accordance with GAAP.

Safe Harbor

Except for historical information, the statements made in this press release are forward-looking statements made pursuant to the safe-harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are based on certain assumptions or estimates, discuss future expectations, describe future plans and strategies, contain projections of results of operations or of financial condition or state other forward-looking information. Our ability to predict results or the actual effect of future plans or strategies is inherently uncertain.

Although we believe that the expectations reflected in such forward-looking statements are based on reasonable assumptions, actual results and performance could differ materially from those set forth in the forward-looking statements. Forward-looking statements in some cases can be identified by the use of words such as "may," "will," "should," "potential," "intend," "expect," "seek," "anticipate," "estimate," "believe," "could," "would," "project," "predict," "continue," "plan," "propose" or other similar words or expressions. These forward-looking statements are based on the current plans and expectations of our management and are subject to certain risks and uncertainties that could cause actual results to differ materially from historical results or those discussed in such forward-looking statements.

Factors that might cause or contribute to such differences include, but are not limited to our dependence on the convenience retail industry for our revenues; uncertain and recent economic conditions; competition; price increases; our dependence on relatively few suppliers; the low-margin nature of cigarette and consumable goods distribution; certain distribution centers' dependence on a few relatively large customers; competition in the labor market and collective bargaining agreements; product liability claims and manufacturer recalls of products; fuel price increases; our dependence on our senior management and key personnel; integration of acquired businesses; currency exchange rate fluctuations; our ability to borrow additional capital; governmental regulations and changes thereto; earthquake and natural disaster damage; failure or disruptions to our information systems; a general decline in cigarette sales volume; competition from sales of deep-discount brands and illicit and other low priced sales of cigarettes. See the "Risk Factors" section included in our Form 10-K, our most recent Form 10-Q and all other information discussed in our filings with the Securities and Exchange Commission for a discussion of risks and uncertainties that may affect our business. Except as provided by law, we undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.