X0202 4 2006-04-07 0 0000110430 FRONTIER OIL CORP /NEW/ FTO 0001189280 DOSSEY T MICHAEL 10000 MEMORIAL DRIVE, SUITE 600 HOUSTON TX 77024-3411 1 0 0 0 Common Stock 2006-04-07 4 A 0 1331 A 12331 D Common Stock 2006-04-07 4 A 0 2420 A 14751 D Grant of Restricted Stock Units under the Amended and Restated Frontier Oil Corporation 1999 Stock Plan. The shares were issued as a Restricted Stock Unit and therefore no consideration was given by the Reporting Person. Shares of common stock will be issued to the Reporting Person upon the first of the following: (i) February 21, 2007; (ii) the Reporting Person's date of death; (iii) a Change in Control of the issuer or (iv) the Reporting Person becomes disabled as defined in Internal Revenue Code section 409(a)(2)(C). Grant of Restricted Stock Units which will vest as follows: 25% on 4-30-06, 25% on 6-30-06, 25% on 9-30-06 and 25% on 12-31-06, or upon items (ii) - (iv) in footnote 2. T. Michael Dossey 2006-04-07