HOC Holly Corp.

Holly Corporation Fourth Quarter 2004 Earnings Release and Conference Call DALLAS, Feb. 1 /PRNewswire-FirstCall/ -- Holly Corporation (NYSE:HOC) plans to announce results for the quarter ended December 31, 2004 on February 16, 2005. The company has scheduled a conference call on February 17, 2005 at 9:30AM EST to discuss financial results. Listeners may access this call by dialing (800) 858-5936. The ID# for this call is 3849662. For those who would like to listen to this call via the internet, you may access the call at: http://audioevent.mshow.com/212249 Additionally, listeners may replay this call approximately two hours after the call concludes by dialing (800) 642-1687. This audio archive will be available for thirty days. Holly Corporation, headquartered in Dallas, Texas, is an independent petroleum refiner and marketer that produces high value light products such as gasoline, diesel fuel and jet fuel. Holly operates through its subsidiaries a 75,000 bpd refinery located in Artesia, New Mexico, a 25,000 bpd refinery in Woods Cross, Utah, and an 8,000 bpd refinery in Great Falls, Montana. Holly also owns a majority interest (including the general partner interest) in Holly Energy Partners, L.P., which through subsidiaries owns or leases approximately 1,000 miles of refined product pipelines in the west Texas and New Mexico region and refined product terminals in several states. DATASOURCE: Holly Corporation CONTACT: Stephen J. McDonnell, Vice President and Chief Financial Officer, or M. Neale Hickerson, Vice President-Treasury & Investor Relations, both of Holly Corporation, +1-214-871-3555 Web site: http://www.hollycorp.com/ http://audioevent.mshow.com/212249

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