Insider Trading activities of Hollyfrontier Corp insiders.

Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Hollyfrontier Corp since 2005 are illustrated in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Hollyfrontier Corp since year 2005. Table 2 shows the detailed insider transactions of Hollyfrontier Corp since 2005. The reporting company's ticker symbol is HFC. The reporting company's CIK number is 48039.
The total value of stock buying since 2005 is $1,898,338.
The total value of stock sales since 2005 is $338,298,498.
The total value of stock option exercises since 2005 is $3,276,601.


Table 1. Monthly summaries of insider stock purchases, sales, and option exercises for Hollyfrontier Corp (HFC).
Trading Period Insider Buying Insider Sales Option Exercises
year-month Shares Value Shares Value Shares Value
2018-12 0 $0 811 $49,511 0 $0
2018-11 0 $0 689 $42,917 0 $0
2018-06 0 $0 58,771 $4,743,156 0 $0
2018-05 0 $0 183,175 $12,347,837 0 $0
2017-12 0 $0 35,149 $1,779,178 0 $0
2017-11 0 $0 17,500 $746,830 0 $0
2017-02 0 $0 13,000 $369,200 0 $0
2016-12 0 $0 109,259 $3,301,698 0 $0
2016-11 0 $0 60,000 $1,411,620 0 $0
2016-03 0 $0 35,000 $1,243,550 0 $0
2015-12 0 $0 100,000 $4,121,100 0 $0
2015-11 0 $0 30,000 $1,512,600 0 $0
2015-08 0 $0 10,000 $528,320 0 $0
2015-06 0 $0 5,000 $206,950 0 $0
2014-11 0 $0 7,035 $303,419 0 $0
2014-09 0 $0 30,000 $1,372,200 0 $0
2014-08 0 $0 13,662 $686,149 0 $0
2014-05 0 $0 19,507 $982,722 0 $0
2013-12 0 $0 113,101 $5,382,541 0 $0
2013-08 0 $0 17,000 $750,040 0 $0
2013-06 4,200 $190,308 0 $0 0 $0
2013-03 2,000 $102,560 110,000 $6,355,400 0 $0
2012-12 0 $0 92,500 $4,214,469 0 $0
2012-11 0 $0 217,346 $9,733,803 0 $0
2012-09 0 $0 25,000 $1,000,125 0 $0
2012-08 0 $0 127,400 $5,069,737 0 $0
2012-06 0 $0 190,000 $6,565,874 0 $0
2012-05 700 $20,429 20,000 $602,000 0 $0
2012-03 662 $21,716 218,400 $7,643,883 0 $0
2012-01 0 $0 12,000 $311,520 0 $0
2011-11 2,444 $58,690 0 $0 0 $0
2011-09 12,000 $315,560 194,125 $7,288,034 0 $0
2011-08 0 $0 4,000 $288,244 0 $0
2011-07 0 $0 10,200 $765,489 0 $0
2011-04 0 $0 5,000 $309,800 0 $0
2011-03 0 $0 1,700 $103,863 0 $0
2010-12 0 $0 3,000 $111,210 0 $0
2010-06 0 $0 7,000 $189,000 0 $0
2010-05 0 $0 10,000 $273,947 0 $0
2010-03 0 $0 4,000 $109,752 4,000 $11,900
2009-08 0 $0 3,000 $63,239 0 $0
2009-05 0 $0 7,010 $170,314 0 $0
2008-08 0 $0 32,442 $997,948 80,000 $238,000
2008-07 0 $0 90,100 $2,904,304 0 $0
2008-06 0 $0 100,000 $3,693,500 0 $0
2008-01 0 $0 0 $0 76,000 $254,068
2007-12 10,000 $475,000 0 $0 0 $0
2007-11 15,000 $714,075 0 $0 0 $0
2007-10 0 $0 34,860 $2,094,519 0 $0
2007-08 0 $0 225,260 $14,153,514 0 $0
2007-04 0 $0 15,000 $945,000 15,000 $44,625
2007-03 0 $0 24,000 $1,355,300 24,000 $71,400
2007-01 0 $0 14,181 $725,219 12,000 $35,700
2006-09 0 $0 1,045,700 $42,834,052 0 $0
2006-08 0 $0 440,700 $21,977,643 20,000 $59,500
2006-07 0 $0 181,200 $8,706,841 0 $0
2006-06 0 $0 339,200 $15,190,087 22,600 $67,235
2006-05 0 $0 3,000 $232,755 0 $0
2006-04 0 $0 134,500 $10,928,340 47,800 $252,688
2006-03 0 $0 192,100 $11,818,511 192,100 $1,135,975
2006-02 0 $0 214,048 $12,952,699 185,800 $1,105,510
2005-10 0 $0 251,500 $13,850,074 0 $0
2005-09 0 $0 526,400 $31,153,733 0 $0
2005-08 0 $0 427,100 $21,503,540 0 $0
2005-07 0 $0 38,400 $1,858,483 0 $0
2005-06 0 $0 38,400 $1,491,993 0 $0
2005-05 0 $0 220,600 $15,201,408 0 $0
2005-04 0 $0 60,400 $2,120,708 0 $0
2005-03 0 $0 163,800 $6,557,086 0 $0

Table 2. Detailed insider stock purchases, sales, and option exercises of Hollyfrontier Corp insiders (HFC)
  Trade Date   Insider Name Trade Type     Shares       Price ($)   Value ($)
2018-12-03 Kostelnik Robert J. (Director) Sale 811 61.05 49,511
2018-11-30 Kostelnik Robert J. (Director) Sale 689 62.29 42,917
2018-06-05 Voliva Richard Lawrence Iii (EVP & CFO) Sale 7,000 80.97 566,790
2018-06-04 Damiris George John (President & CEO) Sale 51,771 80.67 4,176,366
2018-05-23 Echols Leldon E (Director) Sale 13,000 73.35 953,549
2018-05-18 Bech Douglas Y (Director) Sale 4,890 72.98 356,872
2018-05-17 Jennings Michael (Director) Sale 10,000 72.41 724,100
2018-05-10 Rose Michael E (Director) Sale 10,000 67.31 673,100
2018-05-10 Myers Franklin (Director) Sale 30,000 67.43 2,022,900
2018-05-08 Damiris George John (President & CEO) Sale 47,500 65.92 3,131,200
2018-05-07 Jennings Michael (Director) Sale 10,000 66.36 663,600
2018-05-07 Bech Douglas Y (Director) Sale 15,000 66.60 998,999
2018-05-04 Voliva Richard Lawrence Iii (EVP & CFO) Sale 9,464 65.52 620,081
2018-05-04 Mcwatters Denise Clark (SVP, GC & Secy) Sale 15,821 66.19 1,047,191
2018-05-04 Gann John W Jr (VP, Controller & CAO) Sale 8,500 66.39 564,315
2018-05-04 Lee James H (Director) Sale 9,000 65.77 591,930
2017-12-28 Stump James M. (SVP, Refining) Sale 30,000 51.21 1,536,300
2017-12-13 Lee James H (Director) Sale 5,149 47.17 242,878
2017-11-30 Jennings Michael (Director) Sale 1,300 44.50 57,850
2017-11-29 Jennings Michael (Director) Sale 3,200 44.50 142,400
2017-11-10 Gann John W Jr (VP, Controller & CAO) Sale 2,000 41.96 83,920
2017-11-06 Gann John W Jr (VP, Controller & CAO) Sale 11,000 42.06 462,660
2017-02-24 Jennings Michael (Director) Sale 13,000 28.40 369,200
2016-12-22 Jennings Michael (Executive Chairman) Sale 6,529 32.18 210,103
2016-12-20 Lee James H (Director) Sale 2,730 31.72 86,595
2016-12-05 Jennings Michael (Executive Chairman) Sale 60,000 30.05 1,803,000
2016-11-04 Jennings Michael (Executive Chairman) Sale 60,000 23.53 1,411,620
2016-03-29 Jennings Michael (Executive Chairman) Sale 35,000 35.53 1,243,550
2015-12-16 Jennings Michael (CEO and President) Sale 40,000 41.10 1,644,000
2015-12-15 Jennings Michael (CEO and President) Sale 60,000 41.28 2,477,100
2015-11-10 Aron Doug S (EVP & CFO) Sale 30,000 50.42 1,512,600
2015-08-12 Lee James H (Director) Sale 10,000 52.83 528,320
2015-06-29 Stump James M. (SVP, Refinery Operations) Sale 5,000 41.39 206,950
2014-11-14 Mcwatters Denise Clark (SVP, GC & Secy) Sale 7,035 43.13 303,419
2014-09-15 Jennings Michael (CEO and President) Sale 30,000 45.74 1,372,200
2014-08-22 Mcwatters Denise Clark (SVP, GC & Secy) Sale 9,662 51.21 494,829
2014-08-11 Stump James M. (SVP, Refinery Operations) Sale 4,000 47.83 191,320
2014-05-19 Stump James M. (SVP, Refinery Operations) Sale 5,000 50.05 250,250
2014-05-13 Damiris George John (SVP, Supply & Mktg) Sale 14,507 50.49 732,472
2013-12-19 Lamp David L (EVP & COO) Sale 20,622 48.01 990,062
2013-12-19 Rose Michael E (Director) Sale 22,198 46.98 1,042,862
2013-12-18 Lamp David L (EVP & COO) Sale 10,000 47.36 473,600
2013-12-17 Damiris George John (SVP, Supply & Mktg) Sale 23,657 47.38 1,120,892
2013-12-17 Lamp David L (EVP & COO) Sale 16,000 47.63 762,080
2013-12-09 Aron Doug S (EVP & CFO) Sale 20,624 48.15 993,045
2013-08-16 Stump James M. (SVP, Refinery Operations) Sale 17,000 44.12 750,040
2013-06-13 Mckenzie Robert G (Director) Buy 3,000 45.32 135,960
2013-06-13 Myers Franklin (Director) Buy 1,200 45.29 54,348
2013-03-28 Lamp David L (EVP & COO) Sale 10,000 51.86 518,600
2013-03-26 Myers Franklin (Director) Buy 2,000 51.28 102,560
2013-03-06 Jennings Michael (CEO and President) Sale 100,000 58.37 5,836,800
2012-12-31 Lamp David L (EVP & COO) Sale 10,000 45.71 457,100
2012-12-18 Lamp David L (EVP & COO) Sale 20,000 46.66 933,199
2012-12-13 Berry Buford P (Director) Sale 2,500 45.30 113,245
2012-12-11 Aron Doug S (EVP & CFO) Sale 20,000 45.18 903,620
2012-12-11 Shaw Bruce R (Sr VP, Strategy & Corp Dev) Sale 15,000 45.07 676,080
2012-12-03 Bech Douglas Y (Director) Sale 25,000 45.25 1,131,225
2012-11-28 Damiris George John (SVP, Supply & Mktg) Sale 10,856 44.93 487,749
2012-11-27 Jennings Michael (CEO and President) Sale 22,836 44.65 1,019,650
2012-11-26 Clifton Matthew P (Executive Chairman) Sale 150,000 45.03 6,755,100
2012-11-19 Mcwatters Denise Clark (VP, GC & Secy) Sale 8,654 43.57 377,054
2012-11-19 Lee James H (Director) Sale 25,000 43.77 1,094,250
2012-09-11 Damiris George John (SVP, Supply & Mktg) Sale 25,000 40.01 1,000,125
2012-08-31 Lamp David L (EVP & COO) Sale 12,400 39.86 494,313
2012-08-15 Clifton Matthew P (Executive Chairman) Sale 100,000 40.00 4,000,099
2012-08-10 Shaw Bruce R (Sr VP, Strategy & Corp Dev) Sale 15,000 38.35 575,325
2012-06-29 Damiris George John (SVP, Supply & Mktg) Sale 30,000 35.56 1,066,800
2012-06-29 Aron Doug S (EVP & CFO) Sale 35,000 35.79 1,252,615
2012-06-22 Lamp David L (EVP & COO) Sale 15,000 32.91 493,590
2012-06-20 Jennings Michael (CEO and President) Sale 110,000 34.12 3,752,869
2012-05-23 Myers Franklin (Director) Buy 700 29.18 20,429
2012-05-11 Rose Michael E (Director) Sale 20,000 30.10 602,000
2012-03-30 Berry Buford P (Director) Sale 3,000 32.01 96,018
2012-03-13 Lee James H (Director) Sale 8,000 36.36 290,912
2012-03-09 Lamp David L (EVP & COO) Sale 28,000 35.51 994,224
2012-03-09 Clifton Matthew P (Executive Chairman) Sale 115,000 35.91 4,129,075
2012-03-07 Stump James M. (SVP, Refinery Operations) Sale 50,000 33.00 1,650,100
2012-03-07 Mckenzie Robert G (Director) Sale 7,000 33.42 233,953
2012-03-07 Myers Franklin (Director) Buy 662 32.80 21,716
2012-03-01 Surplus Scott C (VP & Controller) Sale 7,400 33.73 249,601
2012-01-06 Berry Buford P (Director) Sale 12,000 25.96 311,520
2011-11-21 Jennings Michael (CEO and President) Buy 2,000 24.11 48,212
2011-11-21 Myers Franklin (Director) Buy 444 23.60 10,478
2011-09-29 Rose Michael E (Director) Buy 10,000 25.95 259,500
2011-09-28 Jennings Michael (CEO and President) Buy 2,000 28.03 56,060
2011-09-08 Reid Jack P (Director) Sale 194,125 37.54 7,288,034
2011-08-29 Lee James H (Director) Sale 4,000 72.06 288,244
2011-07-08 Reid Jack P (Director) Sale 10,200 75.05 765,489
2011-04-01 Lamp David L (President) Sale 5,000 61.96 309,800
2011-03-31 Surplus Scott C (Vice President & Controller) Sale 1,700 61.10 103,863
2010-12-01 Berry Buford P (Director) Sale 3,000 37.07 111,210
2010-06-16 Lamp David L (President) Sale 7,000 27.00 189,000
2010-05-13 Surplus Scott C (Vice President & Controller) Sale 3,000 28.29 84,870
2010-05-11 Lamp David L (President) Sale 7,000 27.01 189,077
2010-03-04 Surplus Scott C (Vice President & Controller) Sale 4,000 27.44 109,752
2010-03-04 Surplus Scott C (Vice President & Controller) Option Ex 4,000 2.98 11,900
2009-08-17 Berry Buford P (Director) Sale 3,000 21.08 63,239
2009-05-18 Matthews Thomas K Ii (Director) Sale 7,010 24.30 170,314
2008-08-21 Clifton Matthew P (Chairman & CEO) Sale 32,442 30.76 997,948
2008-08-20 Clifton Matthew P (Chairman & CEO) Option Ex 80,000 2.98 238,000
2008-07-21 Stoffel Paul T (Director) Sale 50,000 29.18 1,458,900
2008-07-02 Stoffel Paul T (Director) Sale 40,100 36.05 1,445,404
2008-06-27 Stoffel Paul T (Director) Sale 100,000 36.94 3,693,500
2008-01-22 Clifton Matthew P (Chairman & CEO) Option Ex 76,000 3.34 254,068
2007-12-05 Matthews Thomas K Ii (Director) Buy 10,000 47.50 475,000
2007-11-29 Clifton Matthew P (Chairman & CEO) Buy 15,000 47.60 714,075
2007-10-05 Gray William J (Director) Sale 4,860 63.26 307,419
2007-10-01 Stoffel Paul T (Director) Sale 30,000 59.57 1,787,100
2007-08-28 Stoffel Paul T (Director) Sale 50,000 63.33 3,122,188
2007-08-13 Mckenzie Robert G (Director) Sale 4,860 60.85 295,731
2007-08-02 Stoffel Paul T (Director) Sale 50,000 63.26 3,157,505
2007-08-01 Stoffel Paul T (Director) Sale 50,000 63.22 3,160,750
2007-04-12 Glancy W John (Sr. VP & General Counsel) Sale 15,000 63.00 945,000
2007-04-12 Glancy W John (Sr. VP & General Counsel) Option Ex 15,000 2.98 44,625
2007-03-14 Glancy W John (Sr. VP & General Counsel) Sale 14,000 57.50 805,000
2007-03-14 Glancy W John (Sr. VP & General Counsel) Option Ex 14,000 2.98 41,650
2007-03-07 Glancy W John (Sr. VP & General Counsel) Sale 10,000 55.03 550,300
2007-03-07 Glancy W John (Sr. VP & General Counsel) Option Ex 10,000 2.98 29,750
2007-01-22 Glancy W John (Sr. VP & General Counsel) Sale 12,000 51.09 613,116
2007-01-22 Glancy W John (Sr. VP & General Counsel) Option Ex 12,000 2.98 35,700
2007-01-02 Ridenour P Dean (VP and Chief Acctg Officer) Sale 295 51.40 15,163
2007-01-02 Lamp David L (EVP, Refining & Marketing) Sale 788 51.40 40,503
2007-01-02 Mcdonnell Stephen J (VP and CFO) Sale 1,098 51.40 56,437
2006-09-25 Stoffel Paul T (Director) Sale 50,000 38.44 1,921,752
2006-09-20 Stoffel Paul T (Director) Sale 150,000 39.30 5,880,723
2006-09-14 Stoffel Paul T (Director) Sale 50,000 39.59 1,979,300
2006-09-11 Stoffel Paul T (Director) Sale 100,000 40.23 4,021,220
2006-09-08 Stoffel Paul T (Director) Sale 200,000 42.56 8,493,320
2006-09-06 Stoffel Paul T (Director) Sale 50,500 44.06 2,222,080
2006-08-31 Stoffel Paul T (Director) Sale 50,000 44.81 2,240,350
2006-08-30 Stoffel Paul T (Director) Sale 46,400 46.16 2,132,736
2006-08-29 Stoffel Paul T (Director) Sale 50,000 47.97 2,388,508
2006-08-16 Stoffel Paul T (Director) Sale 25,000 50.60 1,263,111
2006-08-14 Stoffel Paul T (Director) Sale 25,000 50.98 1,272,771
2006-08-09 Clifton Matthew P (Chief Executive Officer) Sale 25,000 55.20 1,376,770
2006-08-07 Glancy W John (Sr. VP & General Counsel) Sale 20,000 53.04 1,060,860
2006-08-07 Glancy W John (Sr. VP & General Counsel) Option Ex 20,000 2.98 59,500
2006-08-07 Stoffel Paul T (Director) Sale 50,000 53.41 2,667,796
2006-07-03 Norsworthy Lamar (Chairman of the Board) Sale 100,000 48.15 4,807,130
2006-06-30 Glancy W John (Sr. VP & General Counsel) Sale 20,000 45.22 903,340
2006-06-30 Glancy W John (Sr. VP & General Counsel) Option Ex 20,000 2.98 59,500
2006-06-30 Norsworthy Lamar (Chairman of the Board) Sale 111,500 45.27 5,039,866
2006-06-29 Norsworthy Lamar (Chairman of the Board) Sale 88,500 44.19 3,889,700
2006-05-19 Stoffel Paul T (Director) Sale 2,000 77.58 155,170
2006-04-19 Stoffel Paul T (Director) Sale 49,000 83.30 4,084,460
2006-04-10 Glancy W John (Sr. VP & General Counsel) Sale 12,000 79.86 958,292
2006-04-10 Glancy W John (Sr. VP & General Counsel) Option Ex 12,000 5.95 71,400
2006-04-04 Clifton Matthew P (Chief Executive Officer) Sale 20,000 76.18 1,522,699
2006-04-04 Clifton Matthew P (Chief Executive Officer) Option Ex 20,000 4.75 103,659
2006-03-16 Glancy W John (Sr. VP & General Counsel) Sale 15,000 67.50 1,012,500
2006-03-16 Glancy W John (Sr. VP & General Counsel) Option Ex 15,000 5.48 82,230
2006-03-02 Norsworthy Lamar (Chairman of the Board) Sale 44,400 61.15 2,724,427
2006-03-02 Norsworthy Lamar (Chairman of the Board) Option Ex 44,400 5.95 264,180
2006-03-01 Norsworthy Lamar (Chairman of the Board) Sale 50,000 60.79 3,033,534
2006-03-01 Norsworthy Lamar (Chairman of the Board) Option Ex 50,000 5.95 297,500
2006-02-27 Clifton Matthew P (Chief Executive Officer) Sale 9,400 59.93 563,342
2006-02-27 Norsworthy Lamar (Chairman of the Board) Sale 57,024 60.57 3,444,520
2006-02-27 Norsworthy Lamar (Chairman of the Board) Option Ex 47,600 5.95 283,220
2006-02-24 Norsworthy Lamar (Chairman of the Board) Sale 50,000 60.69 3,033,859
2006-02-24 Norsworthy Lamar (Chairman of the Board) Option Ex 50,000 5.95 297,500
2005-10-21 Stoffel Paul T (Director) Sale 24,700 52.41 1,294,551
2005-10-20 Stoffel Paul T (Director) Sale 34,100 51.29 1,748,884
2005-10-19 Stoffel Paul T (Director) Sale 60,000 51.93 3,109,025
2005-10-04 Norsworthy Lamar (Chairman of the Board) Sale 22,600 63.78 1,436,759
2005-10-03 Norsworthy Lamar (Chairman of the Board) Sale 16,600 64.69 1,073,251
2005-09-26 Norsworthy Lamar (Chairman of the Board) Sale 10,500 58.57 614,953
2005-09-22 Norsworthy Lamar (Chairman of the Board) Sale 17,700 61.91 1,094,835
2005-09-21 Norsworthy Lamar (Chairman of the Board) Sale 68,200 59.53 4,043,236
2005-09-20 Norsworthy Lamar (Chairman of the Board) Sale 15,200 58.03 883,334
2005-09-19 Stoffel Paul T (Director) Sale 41,700 59.15 2,458,447
2005-09-19 Norsworthy Lamar (Chairman of the Board) Sale 70,600 59.36 4,188,730
2005-09-16 Gray William J (Director) Sale 17,000 58.01 986,170
2005-09-16 Stoffel Paul T (Director) Sale 18,300 57.99 1,061,217
2005-09-15 Norsworthy Lamar (Chairman of the Board) Sale 12,400 58.88 731,596
2005-09-14 Norsworthy Lamar (Chairman of the Board) Sale 18,800 58.83 1,106,079
2005-09-13 Norsworthy Lamar (Chairman of the Board) Sale 50,000 59.22 2,955,576
2005-09-12 Stoffel Paul T (Director) Sale 22,600 59.26 1,339,230
2005-09-12 Norsworthy Lamar (Chairman of the Board) Sale 25,000 59.34 1,483,525
2005-08-29 Norsworthy Lamar (Chairman of the Board) Sale 16,800 51.16 859,572
2005-08-25 Norsworthy Lamar (Chairman of the Board) Sale 25,000 50.08 1,251,975
2005-08-24 Norsworthy Lamar (Chairman of the Board) Sale 20,300 50.44 1,023,187
2005-08-23 Norsworthy Lamar (Chairman of the Board) Sale 29,500 50.22 1,481,460
2005-08-22 Norsworthy Lamar (Chairman of the Board) Sale 50,000 50.54 2,522,644
2005-08-19 Norsworthy Lamar (Chairman of the Board) Sale 40,000 50.54 2,022,563
2005-08-18 Norsworthy Lamar (Chairman of the Board) Sale 19,200 48.68 934,527
2005-08-17 Norsworthy Lamar (Chairman of the Board) Sale 69,200 50.50 3,491,427
2005-08-16 Norsworthy Lamar (Chairman of the Board) Sale 18,400 51.09 939,903
2005-07-12 Norsworthy Lamar (Chairman of the Board) Sale 38,400 48.40 1,858,483
2005-06-03 Norsworthy Lamar (Chairman of the Board) Sale 38,400 38.85 1,491,993
2005-05-25 Norsworthy Lamar (Chairman of the Board) Sale 19,200 37.00 710,342
2005-05-24 Norsworthy Lamar (Chairman of the Board) Sale 19,200 37.25 715,219
2005-05-19 Stoffel Paul T (Director) Sale 98,000 74.85 7,404,188
2005-04-20 Norsworthy Lamar (Chairman of the Board) Sale 38,400 35.14 1,349,222
2005-04-14 Stoffel Paul T (Director) Sale 12,000 35.12 421,416
2005-04-13 Stoffel Paul T (Director) Sale 10,000 35.01 350,070
2005-03-31 Stoffel Paul T (Director) Sale 17,400 59.54 1,035,996
2005-03-29 Stoffel Paul T (Director) Sale 10,000 36.34 363,380
2005-03-24 Stoffel Paul T (Director) Sale 30,000 36.73 1,101,999
2005-03-14 Stoffel Paul T (Director) Sale 10,000 36.94 369,440
2005-03-10 Norsworthy Lamar (Chairman of the Board) Sale 38,400 37.85 1,453,363
2005-03-09 Stoffel Paul T (Director) Sale 48,000 38.87 1,865,568

Insider trading activities including stock purchases, stock sales, and option exercises of HFC listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Hollyfrontier Corp (symbol HFC, CIK number 48039) see the Securities and Exchange Commission (SEC) website.