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May 29, 2018
HollyFrontier Corporation Statement on the Passing of Former Chairman and CEO, Lamar Norsworthy

DALLAS--(BUSINESS WIRE)--May 29, 2018-- HollyFrontier Corporation (NYSE: HFC) ("HollyFrontier") is sad to announce the passing of Lamar Norsworthy.

Beginning in 1967, Mr. Norsworthy served at Holly Corporation in roles of increasing responsibility until his retirement as Chief Executive Officer and Chairman of the Board in 2006.

"We are deeply saddened by the passing of our former colleague," said George Damiris, Chief Executive Officer and President. "On behalf of the entire HollyFrontier team, we extend our deepest condolences to his family and friends. Lamar’s contributions to HollyFrontier are part of the fabric of our company now and thankfully will remain with us in the years to come."

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 57% interest and a non-economic general partner interest in Holly Energy Partners, L.P.

Source: HollyFrontier Corporation

HollyFrontier Corporation
Craig Biery, 214-954-6510
Director, Investor Relations
Jared Harding, 214-954-6510
Investor Relations