Press Release Details

HollyFrontier Corporation First Quarter 2017 Earnings Release and Conference Webcast

04/03/2017

DALLAS--(BUSINESS WIRE)-- HollyFrontier Corporation (NYSE: HFC) (the "Company") plans to announce results for its quarter ended March 31, 2017 on May 3, 2017, before the opening of trading on the NYSE. The Company has scheduled a webcast conference on May 3, 2017 at 8:30 a.m. Eastern time to discuss financial results.

This webcast may be accessed at: https://event.webcasts.com/starthere.jsp?ei=1139807

An audio archive of this webcast will be available using the above noted link through May 17, 2017.

About HollyFrontier Corporation:

HollyFrontier Corporation, headquartered in Dallas, Texas, is an independent petroleum refiner and marketer that produces high value light products such as gasoline, diesel fuel, jet fuel and other specialty products. HollyFrontier operates through its subsidiaries a 135,000 barrels per stream day ("bpsd") refinery located in El Dorado, Kansas, a 125,000 bpsd refinery in Tulsa, Oklahoma, a 100,000 bpsd refinery located in Artesia, New Mexico, a 52,000 bpsd refinery located in Cheyenne, Wyoming and a 45,000 bpsd refinery in Woods Cross, Utah. HollyFrontier markets its refined products principally in the Southwest U.S., the Rocky Mountains extending into the Pacific Northwest and in other neighboring Plains states. In addition, HollyFrontier, through its subsidiary, owns Petro-Canada Lubricants Inc., whose Mississauga, Ontario facility produces 15,600 barrels per day of base oils and other specialized lubricant products, and owns a 37% interest (including a 2% general partner interest) in Holly Energy Partners, L.P.

Source: HollyFrontier Corporation

HollyFrontier Corporation

Craig Biery, 214-954-6510

Director, Investor Relations