The Board of Directors at HollyFrontier Corp. announced that they have approved a stock repurchase authorization of up to USD 100 million to repurchase common stock in the open market or via privately negotiated transactions. Currently, this stock repurchase program is the only program authorized by the company for the repurchase of the company’s common stock. The timing and amount of repurchase transactions under this program will depend upon market conditions, corporate and regulatory considerations, and other applicable considerations. The stock repurchase program may be discontinued at any time by the Board of Directors.