This Item 2 contains "forward-looking" statements. See "Forward-Looking
Statements" at the beginning of Part I of this Quarterly Report on Form 10-Q. In
this document, the words "we," "our," "ours" and "us" refer only to
HollyFrontier Corporation ("HollyFrontier") and its consolidated subsidiaries or
to HollyFrontier or an individual subsidiary and not to any other person with
certain exceptions. Generally, the words "we," "our," "ours" and "us" include
Holly Energy Partners, L.P. ("HEP") and its subsidiaries as consolidated
subsidiaries of HollyFrontier, unless when used in disclosures of transactions
or obligations between HEP and HollyFrontier or its other subsidiaries. This
document contains certain disclosures of agreements that are specific to HEP and
its consolidated subsidiaries and do not necessarily represent obligations of
HollyFrontier. When used in descriptions of agreements and transactions, "HEP"
refers to HEP and its consolidated subsidiaries.


OVERVIEW



We are an independent petroleum refiner and marketer that produces high-value
light products such as gasoline, diesel fuel, jet fuel, specialty lubricant
products and specialty and modified asphalt. We own and operate refineries
located in El Dorado, Kansas (the "El Dorado Refinery"), Tulsa, Oklahoma (the
"Tulsa Refineries"), which comprise two production facilities, the Tulsa West
and East facilities, Artesia, New Mexico, which operates in conjunction with
crude, vacuum distillation and other facilities situated 65 miles away in
Lovington, New Mexico (collectively, the "Navajo Refinery") and Woods Cross,
Utah (the "Woods Cross Refinery"). We market our refined products principally in
the Southwest United States, the Rocky Mountains extending into the Pacific
Northwest and in other neighboring Plains states. In addition, we produce base
oils and other specialized lubricants in the United States, Canada and the
Netherlands, and export products to more than 80 countries. We also own a 57%
limited partner interest and a non-economic general partner interest in HEP, a
master limited partnership that provides petroleum product and crude oil
transportation, terminalling, storage and throughput services to the petroleum
industry, including HollyFrontier Corporation subsidiaries.

On August 2, 2021, HollyFrontier, Hippo Parent Corporation, a wholly owned
subsidiary of HollyFrontier ("New Parent"), Hippo Merger Sub, Inc., a wholly
owned subsidiary of New Parent ("Parent Merger Sub"), The Sinclair Companies
("Sinclair"), and Hippo Holding LLC, a wholly owned subsidiary of Sinclair (the
"Target Company"), entered into a Business Combination Agreement (the "Business
Combination Agreement"). Pursuant to the Business Combination Agreement,
HollyFrontier will acquire the Target Company by effecting (a) a holding company
merger in accordance with Section 251(g) of the Delaware General Corporation Law
whereby HollyFrontier will merge with and into Parent Merger Sub, with
HollyFrontier surviving such merger as a direct wholly owned subsidiary of New
Parent (the "HFC Merger") and (b) immediately following the HFC Merger, a
contribution whereby Sinclair will contribute all of the equity interests of the
Target Company to New Parent in exchange for shares of New Parent, resulting in
the Target Company becoming a direct wholly owned subsidiary of New Parent (the
"Sinclair Oil Acquisition" and together with the HFC Merger, the "HFC
Transactions").

Under the terms of the Business Combination Agreement, (a) each share of common
stock of HollyFrontier, par value $0.01 per share, will be automatically
converted into one share of common stock of New Parent, par value $0.01 per
share ("New Parent Common Stock") and (b) Sinclair will contribute the equity
interests in the Target Company to New Parent in exchange for 60,230,036 shares
of New Parent Common Stock, subject to adjustment if, as a condition to
obtaining antitrust clearance for the Sinclair Transactions (as defined below),
HollyFrontier agrees to divest certain Woods Cross Refinery assets and the sales
price for such assets does not exceed a threshold provided in the Business
Combination Agreement.

Additionally, on August 2, 2021, HEP, Sinclair, and Sinclair Transportation
Company, a wholly owned subsidiary of Sinclair ("STC"), entered into a
Contribution Agreement (the "Contribution Agreement") pursuant to which HEP will
acquire all of the outstanding shares of STC in exchange for 21 million newly
issued common limited partner units of HEP and cash consideration equal to $325
million (the "HEP Transactions", and together with the HFC Transactions, the
"Sinclair Transactions"), subject to downward adjustment if, as a condition to
obtaining antitrust clearance for the Sinclair Transactions, HEP agrees to
divest a portion of its equity interest in UNEV Pipeline LLC and the sales price
for such interests does not exceed the threshold provided in the Contribution
Agreement.

The Sinclair Transactions are expected to close in mid-2022, subject to
customary closing conditions and regulatory clearance, including the expiration
or termination of the waiting period under the Hart-Scott-Rodino Antitrust
Improvements Act and the receipt of required approvals of HFC's stockholders. In
addition, the HFC Transactions and the HEP Transactions are cross-conditioned on
each other. See Note 15 of Notes to Consolidated Financial Statements included
in "Item 1. Financial Statements" for additional information.

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On May 4, 2021, HollyFrontier Puget Sound Refining LLC, a wholly-owned
subsidiary of HollyFrontier Corporation, entered into a sale and purchase
agreement with Equilon Enterprises LLC d/b/a Shell Oil Products US ("Shell") to
acquire Shell's refinery and related assets, including the on-site cogeneration
facility and related logistics assets (the "Puget Sound Refinery"), for a base
cash purchase price of $350 million plus hydrocarbon inventory to be valued at
closing with an estimated current value in the range of $150 million to $180
million (the "Puget Sound Acquisition"). The Puget Sound Refinery is
strategically located on approximately 850 acres in Anacortes, Washington,
approximately 80 miles north of Seattle and 90 miles south of Vancouver. The
149,000 barrel per day facility is a large, high quality and complex refinery
with catalytic cracking and delayed coking units and is well positioned
geographically and logistically to source advantaged Canadian and Alaskan North
Slope crudes. In addition to refining assets and an on-site cogeneration
facility, the transaction includes a deep-water marine dock, a light product
loading rack, a rail terminal, and storage tanks with approximately 5.8 million
barrels of crude, product and other hydrocarbon storage capacity. The Puget
Sound Acquisition is expected to close in the fourth quarter of 2021, subject to
customary closing conditions. We expect to fund the Puget Sound Acquisition with
a one-year suspension of our regular quarterly dividend and cash on hand.

On April 27, 2021, our wholly-owned subsidiary, 7037619 Canada Inc, entered into
a contract for sale of property in Mississuaga, Canada for base consideration of
Canadian $125 million, and we expect the transaction to close in the third
quarter of 2021.

In the third quarter of 2020, we permanently ceased petroleum refining
operations at our facility in Cheyenne, Wyoming (the "Cheyenne Refinery") and
subsequently began converting certain assets at our Cheyenne Refinery to
renewable diesel production. In connection with the cessation of petroleum
refining operations at our Cheyenne Refinery, we recognized $8.1 million and
$16.3 million, in decommissioning expense and $0.2 million and $0.7 million, in
employee severance costs for the three and six months ended June 30, 2021,
respectively, which were recognized in operating expenses in our Corporate and
Other segment.

During the first quarter of 2021, we initiated a restructuring within our
Lubricants and Specialty Products segment, which is expected to save
approximately $15 million per year of ongoing cash expenses. We recorded $7.8
million in employee severance costs for the six months ended June 30, 2021,
which were recognized primarily as selling, general and administrative expenses
in our Lubricants and Specialty Products segment.

For the three months ended June 30, 2021, net income attributable to
HollyFrontier stockholders was $168.9 million compared to net loss of $176.7
million for the three months ended June 30, 2020. For the six months ended
June 30, 2021, net income attributable to HollyFrontier stockholders was $317.1
million compared to net loss of $481.3 million for the six months ended June 30,
2020. Included in our financial results for the second quarter of 2021 was an
inventory reserve adjustment that resulted in a benefit of $118.8 million. Gross
refining margin per produced barrel sold in our Refining segment increased 45%
for the three months ended June 30, 2021 over the same period of 2020. Included
in the three months ended June 30, 2020 were long-lived asset impairment charges
of $436.9 million related to our Cheyenne Refinery and Petro-Canada Lubricants
Inc. ("PCLI").

Pursuant to the 2007 Energy Independence and Security Act, the Environmental
Protection Agency ("EPA") promulgated the Renewable Fuel Standard ("RFS")
regulations, which increased the volume of renewable fuels mandated to be
blended into the nation's fuel supply. The regulations, in part, require
refiners to add annually increasing amounts of "renewable fuels" to their
petroleum products or purchase credits, known as renewable identification
numbers ("RINs"), in lieu of such blending. Compliance with RFS regulations
significantly increases our cost of products sold, with RINs costs totaling
$175.0 million for the three months ended June 30, 2021. At June 30, 2021, our
open RINs credit obligations were $131.1 million. We will continue to monitor
and adjust our RINs position commensurate with our production levels, market
conditions and RFS regulations.

Impact of COVID-19 on Our Business
The COVID-19 pandemic caused a decline in U.S. and global economic activity
starting in the first quarter of 2020. This decrease reduced both volumes and
unit margins across our businesses, resulting in lower gross margins and
earnings. Global demand for transportation fuels has continued to improve
beginning late in the second quarter of 2020, but remains below pre-pandemic
levels. In response to this demand and margin environment, as well as both
planned and unplanned maintenance, we operated our Refining segment refineries
at an average crude charge of 416,350 BPD during the second quarter of 2021.

In our Lubricants and Specialty Products segment, the Rack Back portion saw a
combination of strong demand as well as limited supply due to a number of
factors driving strong margins and earnings across the segment. In the Rack
Forward portion, despite strong sales volumes and price increases, the rapid
rise in base oil prices through the quarter compressed margins in the second
quarter of 2021.

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Continued increases in commodity prices resulted in market values for our
inventories held at June 30, 2021 above the costs of these inventories using the
last-in, first-out ("LIFO") method and in a lower of cost or market valuation
gain of $118.8 million for the three months ended June 30, 2021.

Our standalone (excluding HEP) liquidity was approximately $2.7 billion at
June 30, 2021, consisting of cash and cash equivalents of $1.4 billion and an
undrawn $1.35 billion credit facility maturing in 2026. Our standalone
(excluding HEP) principal amount of long-term debt was $1.75 billion as of
June 30, 2021, which consists of $350.0 million in 2.625% senior notes due in
2023, $1.0 billion of 5.875% senior notes due in 2026 and $400.0 million in
4.500% senior notes due in 2030.


OUTLOOK



The impact of the COVID-19 pandemic on the global macroeconomy created an
unprecedented reduction in demand, as well as a lack of forward visibility, for
many of the transportation fuels, lubricants and specialty products and the
associated transportation and terminal services we provide. Since the declines
in demand at the beginning of the COVID-19 pandemic, we began to see improvement
in demand for these products and services beginning late in the second quarter
of 2020 that continued through the second quarter of 2021, and with the
increasing availability of vaccines, we believe there is a path to a fulsome
recovery in demand in 2021.

With increasing vaccination rates, most of our employees have returned to work
at our locations, and we continue to follow Centers for Disease Control and
local government guidance. We will continue to monitor developments in the
COVID-19 pandemic and the dynamic environment it has created to properly address
these policies going forward.

Within our Refining segment, for the third quarter of 2021, we expect to run between 380,000-400,000 barrels per day of crude oil. We expect to adjust refinery production levels commensurate with market demand and planned maintenance.



Within our Lubricants and Specialty Products segment, for the full year 2021, we
expect to earn between $180 million to $220 million in income from operations
and $230 million to $270 million of EBITDA in the Rack Forward portion of the
segment. Within the Rack Back portion, for the third quarter of 2021, we expect
base oil margins to fall from spot market levels, but remain higher than the
past three years. Similar to our Refining segment, we expect to adjust
production levels commensurate with market demand.

At HEP, we expect to see demand for transportation and terminal services grow
with underlying demand for transportation fuels and crude oil. In 2021, HEP
expects to hold the quarterly distribution constant at $0.35 per unit, or $1.40
on an annualized basis. HEP remains committed to its distribution strategy
focused on funding all capital expenditures and distributions within operating
cash flow and improving distributable cash flow coverage to 1.3x or greater with
the goal of reducing leverage to 3.0-3.5x.

During the third quarter of 2020, we increased our liquidity by $750.0 million
with the issuance of $350.0 million in 2.625% senior notes due in 2023 and
$400.0 million in 4.500% senior notes due in 2030. This additional liquidity may
be used for general corporate purposes and is expected to support the planned
growth of our renewables business and the unexpected economic impact of
COVID-19, as needed. We do not intend to repurchase common stock under our $1.0
billion share repurchase program until demand for our products normalize. In
addition, we announced the Puget Sound Acquisition, which is expected to close
in the fourth quarter of 2021, subject to customary closing conditions. We
expect to fund the Puget Sound Acquisition with a one-year suspension of our
regular quarterly dividend and cash on hand. Our Board of Directors approved the
one-year suspension of the regular quarterly dividend effective with the
dividend to be declared for the first quarter of 2021 and is expected to resume
the dividend after such time.

On March 27, 2020, the U.S. government passed the Coronavirus Aid, Relief, and
Economic Security Act (the "CARES Act"), an approximately $2 trillion stimulus
package that included various provisions intended to provide relief to
individuals and businesses in the form of tax changes, loans and grants, among
others. At this time, we have not sought relief in the form of loans or grants
from the CARES Act; however, we have benefited from certain tax deferrals in the
CARES Act and may benefit from other tax provisions if we meet the requirements
to do so.

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The extent to which our future results are affected by the COVID-19 pandemic
will depend on various factors and consequences beyond our control, such as the
duration and scope of the pandemic, the effects of any new variant strains of
the underlying virus, additional actions by businesses and governments in
response to the pandemic and the speed and effectiveness of responses to combat
the virus. The COVID-19 pandemic, and the volatile regional and global economic
conditions stemming from it, could also exacerbate the risk factors identified
in our Annual Report on Form 10-K for the fiscal year ended December 31, 2020,
in our Quarterly Report on Form 10-Q for the quarter ended March 31, 2021 and in
this Form 10-Q. The COVID-19 pandemic may also materially adversely affect our
results in a manner that is either not currently known or that we do not
currently consider to be a significant risk to our business.

A more detailed discussion of our financial and operating results for the three and six months ended June 30, 2021 and 2020 is presented in the following sections.


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RESULTS OF OPERATIONS

Financial Data
                                                                  Three Months Ended
                                                                       June 30,                                 Change from 2020
                                                               2021                 2020                  Change                 Percent
                                                                                (In thousands, except per share data)
Sales and other revenues                                  $ 4,577,123          $ 2,062,930          $      2,514,193                  122  %
Operating costs and expenses:
Cost of products sold (exclusive of depreciation
and amortization):
Cost of products sold (exclusive of lower of cost
or market inventory valuation adjustment)                   3,825,729            1,576,996                 2,248,733                  143
Lower of cost or market inventory valuation
adjustment                                                   (118,825)            (269,904)                  151,079                  (56)
                                                            3,706,904            1,307,092                 2,399,812                  184
Operating expenses (exclusive of depreciation and
amortization)                                                 334,191              303,359                    30,832                   10
Selling, general and administrative expenses
(exclusive of depreciation and amortization)                   77,754               75,369                     2,385                    3
Depreciation and amortization                                 124,042              130,178                    (6,136)                  (5)
Long-lived asset impairment                                         -              436,908                  (436,908)                (100)
Total operating costs and expenses                          4,242,891            2,252,906                 1,989,985                   88
Income (loss) from operations                                 334,232             (189,976)                  524,208                 (276)
Other income (expense):
Earnings of equity method investments                           3,423                2,156                     1,267                   59
Interest income                                                 1,029                1,506                      (477)                 (32)
Interest expense                                              (28,942)             (32,695)                    3,753                  (11)

Gain on sales-type leases                                           -               33,834                   (33,834)                (100)

Gain on foreign currency transactions                             583                2,285                    (1,702)                 (74)
Other, net                                                      7,927                1,572                     6,355                  404
                                                              (15,980)               8,658                   (24,638)                (285)
Income (loss) before income taxes                             318,252             (181,318)                  499,570                 (276)
Income tax expense (benefit)                                  123,485              (30,911)                  154,396                 (499)
Net income (loss)                                             194,767             (150,407)                  345,174                 (229)
Less net income attributable to noncontrolling
interest                                                       25,917               26,270                      (353)                  (1)
Net income (loss) attributable to HollyFrontier
stockholders                                              $   168,850          $  (176,677)         $        345,527                 (196) %
Earnings (loss) per share attributable to
HollyFrontier stockholders:
Basic                                                     $      1.03          $     (1.09)         $           2.12                 (194) %
Diluted                                                   $      1.03          $     (1.09)         $           2.12                 (194) %
Cash dividends declared per common share                  $         -          $      0.35          $          (0.35)                (100) %
Average number of common shares outstanding:
Basic                                                         162,523              161,889                       634                    -  %
Diluted                                                       162,523              161,889                       634                    -  %




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                                                                   Six Months Ended
                                                                       June 30,                                Change from 2020
                                                               2021                 2020                  Change                Percent
                                                                                (In thousands, except per share data)
Sales and other revenues                                  $ 8,081,416          $ 5,463,475                2,617,941                   48  %
Operating costs and expenses:
Cost of products sold (exclusive of depreciation
and amortization):
Cost of products sold (exclusive of lower of cost
or market inventory valuation adjustment)                   6,786,034            4,270,722                2,515,312                   59
Lower of cost or market inventory valuation
adjustment                                                   (318,862)             290,560                 (609,422)                (210)
                                                            6,467,172            4,561,282                1,905,890                   42
Operating expenses (exclusive of depreciation and
amortization)                                                 734,100              631,704                  102,396                   16
Selling, general and administrative expenses
(exclusive of depreciation and amortization)                  159,729              163,106                   (3,377)                  (2)
Depreciation and amortization                                 248,121              270,753                  (22,632)                  (8)
Long-lived asset impairment                                         -              436,908                 (436,908)                (100)
Total operating costs and expenses                          7,609,122            6,063,753                1,545,369                   25
Income (loss) from operations                                 472,294             (600,278)               1,072,572                 (179)

Other income (expense):
Earnings of equity method investments                           5,186                3,870                    1,316                   34
Interest income                                                 2,060                5,579                   (3,519)                 (63)
Interest expense                                              (67,328)             (55,334)                 (11,994)                  22

Gain on tariff settlement                                      51,500                    -                   51,500                    -
Gain on sales-type leases                                           -               33,834                  (33,834)                (100)
Loss on early extinguishment of debt                                -              (25,915)                  25,915                 (100)
Loss on foreign currency transactions                            (734)              (1,948)                   1,214                  (62)
Other, net                                                      9,817                3,422                    6,395                  187
                                                                  501              (36,492)                  36,993                 (101)
Income (loss) before income taxes                             472,795             (636,770)               1,109,565                 (174)
Income tax expense (benefit)                                   95,178             (193,077)                 288,255                 (149)
Net income (loss)                                             377,617             (443,693)                 821,310                 (185)
Less net income attributable to noncontrolling
interest                                                       60,550               37,607                   22,943                   61
Net income (loss) attributable to HollyFrontier
stockholders                                              $   317,067          $  (481,300)         $       798,367                 (166) %

Earnings (loss) per share attributable to
HollyFrontier stockholders:
Basic                                                     $      1.92          $     (2.97)         $          4.89                 (165) %
Diluted                                                   $      1.92          $     (2.97)         $          4.89                 (165) %
Cash dividends declared per common share                  $      0.35          $      0.70          $         (0.35)                 (50) %
Average number of common shares outstanding:
Basic                                                         162,501              161,882                      619                    -  %
Diluted                                                       162,501              161,882                      619                    -  %




Balance Sheet Data
                                June 30, 2021      December 31, 2020
                                 (Unaudited)
                                           (In thousands)
Cash and cash equivalents      $   1,398,280      $        1,368,318
Working capital                $   2,131,679      $        1,935,605
Total assets                   $  12,560,033      $       11,506,864
Long-term debt                 $   3,100,969      $        3,142,718
Total equity                   $   6,040,244      $        5,722,203



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Other Financial Data
                                                         Three Months Ended June 30,                    Six Months Ended June 30,
                                                           2021                  2020                   2021                    2020
                                                                                       (In thousands)
Net cash provided by operating activities           $       427,755          $ 119,204          $      490,081              $  309,302
Net cash used for investing activities              $      (175,248)         $ (45,572)         $     (322,312)             $ (131,666)
Net cash used for financing activities              $       (48,917)         $ (84,062)         $     (138,478)             $ (155,519)
Capital expenditures                                $       182,880          $  45,987          $      332,841              $  129,736
EBITDA (1)                                          $       444,290          $ (46,221)         $      725,634              $ (353,869)



(1)Earnings before interest, taxes, depreciation and amortization, which we
refer to as "EBITDA," is calculated as net income (loss) attributable to
HollyFrontier stockholders plus (i) interest expense, net of interest income,
(ii) income tax provision, and (iii) depreciation and amortization. EBITDA is
not a calculation provided for under GAAP; however, the amounts included in the
EBITDA calculation are derived from amounts included in our consolidated
financial statements. EBITDA should not be considered as an alternative to net
income or operating income as an indication of our operating performance or as
an alternative to operating cash flow as a measure of liquidity. EBITDA is not
necessarily comparable to similarly titled measures of other companies. EBITDA
is presented here because it is a widely used financial indicator used by
investors and analysts to measure performance. EBITDA is also used by our
management for internal analysis and as a basis for financial covenants. EBITDA
presented above is reconciled to net income under "Reconciliations to Amounts
Reported Under Generally Accepted Accounting Principles" following Item 3 of
Part I of this Form 10-Q.

Segment Operating Data

Our operations are organized into three reportable segments, Refining,
Lubricants and Specialty Products and HEP. See Note 14 "Segment Information" in
the Notes to Consolidated Financial Statements for additional information on our
reportable segments.

Refining Segment Operating Data



Our refinery operations include the El Dorado, Tulsa, Navajo and Woods Cross
Refineries. The following tables set forth information, including non-GAAP
performance measures, about our consolidated refinery operations. The cost of
products and refinery gross and net operating margins do not include the
non-cash effects of lower of cost or market inventory valuation adjustments,
depreciation and amortization and long-lived asset impairments. Reconciliations
to amounts reported under GAAP are provided under "Reconciliations to Amounts
Reported Under Generally Accepted Accounting Principles" following Item 3 of
Part I of this Form 10-Q.

In the third quarter of 2020, we permanently ceased petroleum refining
operations at our Cheyenne Refinery and subsequently began converting certain
assets at our Cheyenne Refinery to renewable diesel production. The
disaggregation of our refining geographic operating data is presented in two
regions, Mid-Continent and West, to best reflect the economic drivers of our
refining operations. The Mid-Continent region continues to be comprised of the
El Dorado and Tulsa Refineries, and the new West region is comprised of the
Navajo and Woods Cross Refineries. Refining segment operating data for the three
and six months ended June 30, 2020 have been retrospectively adjusted to reflect
the revised regional groupings.

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                                                Three Months Ended June 30,                  Six Months Ended June 30,
                                                 2021                   2020                 2021                  2020

Mid-Continent Region (El Dorado and Tulsa Refineries) Crude charge (BPD) (1)

                           278,380               206,950              247,500               229,670
Refinery throughput (BPD) (2)                    293,050               220,010              257,030               245,470
Sales of produced refined products
(BPD) (3)                                        287,680               216,280              249,400               237,760
Refinery utilization (4)                           107.1   %              79.6  %              95.2   %              88.3  %

Average per produced barrel (5)
Refinery gross margin                      $       10.82           $      6.31          $      8.99           $      8.07
Refinery operating expenses (6)                     5.27                  5.68                 7.22                  5.47
Net operating margin                       $        5.55           $      0.63          $      1.77           $      2.60

Refinery operating expenses per
throughput barrel (7)                      $        5.18           $      5.58          $      6.89           $      5.30

Feedstocks:
Sweet crude oil                                       64   %                61  %                62   %                56  %
Sour crude oil                                        14   %                16  %                14   %                19  %
Heavy sour crude oil                                  17   %                17  %                19   %                19  %
Other feedstocks and blends                            5   %                 6  %                 5   %                 6  %
Total                                                100   %               100  %               100   %               100  %


Sales of produced refined products:
Gasolines                                   51  %      54  %      51  %      53  %
Diesel fuels                                34  %      36  %      34  %      33  %
Jet fuels                                    4  %       1  %       5  %       4  %
Fuel oil                                     1  %       1  %       1  %       1  %
Asphalt                                      2  %       3  %       2  %       3  %
Base oils                                    4  %       3  %       4  %       4  %
LPG and other                                4  %       2  %       3  %       2  %
Total                                      100  %     100  %     100  %     100  %


West Region (Navajo and Woods Cross
Refineries)
Crude charge (BPD) (1)                          137,970              105,120              134,940              122,690
Refinery throughput (BPD) (2)                   151,680              117,840              148,160              136,090
Sales of produced refined products
(BPD) (3)                                       156,260              132,610              150,290              141,610
Refinery utilization (4)                           95.2  %              72.5  %              93.1  %              84.6  %

Average per produced barrel (5)
Refinery gross margin                       $     13.35          $     10.96          $     11.88          $     12.41
Refinery operating expenses (6)                    6.57                 7.26                 7.29                 7.07
Net operating margin                        $      6.78          $      

3.70 $ 4.59 $ 5.34



Refinery operating expenses per
throughput barrel (7)                       $      6.77          $      7.62          $      7.40          $      7.36

Feedstocks:
Sweet crude oil                                      22  %                32  %                23  %                29  %
Sour crude oil                                       59  %                48  %                59  %                50  %
Black wax crude oil                                  10  %                 9  %                 9  %                11  %
Other feedstocks and blends                           9  %                11  %                 9  %                10  %
Total                                               100  %               100  %               100  %               100  %

Sales of produced refined products:
Gasolines                                            52  %                55  %                53  %                56  %
Diesel fuels                                         37  %                34  %                37  %                35  %
Fuel oil                                              3  %                 2  %                 3  %                 2  %
Asphalt                                               5  %                 6  %                 4  %                 4  %
LPG and other                                         3  %                 3  %                 3  %                 3  %
Total                                               100  %               100  %               100  %               100  %


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                                                 Three Months Ended June 30,                   Six Months Ended June 30,
                                                  2021                   2020                  2021                  2020
Consolidated
Crude charge (BPD) (1)                            416,350               312,070               382,440               352,360
Refinery throughput (BPD) (2)                     444,730               337,850               405,190               381,560
Sales of produced refined products
(BPD) (3)                                         443,940               348,890               399,690               379,370
Refinery utilization (4)                            102.8   %              77.1  %               94.4   %              87.0  %

Average per produced barrel (5)
Refinery gross margin                       $       11.71           $      8.08          $      10.07           $      9.69
Refinery operating expenses (6)                      5.73                  6.28                  7.25                  6.07
Net operating margin                        $        5.98           $      1.80          $       2.82           $      3.62

Refinery operating expenses per
throughput barrel (7)                       $        5.72           $      6.48          $       7.07           $      6.03


Feedstocks:
Sweet crude oil                             50  %      51  %      48  %      46  %
Sour crude oil                              30  %      27  %      30  %      30  %
Heavy sour crude oil                        11  %      11  %      12  %      12  %
Black wax crude oil                          3  %       3  %       3  %       4  %
Other feedstocks and blends                  6  %       8  %       7  %       8  %
Total                                      100  %     100  %     100  %     100  %

Sales of produced refined products:
Gasolines                                   51  %      54  %      52  %      54  %
Diesel fuels                                35  %      35  %      35  %      34  %
Jet fuels                                    3  %       1  %       3  %       3  %
Fuel oil                                     1  %       1  %       1  %       1  %
Asphalt                                      3  %       4  %       3  %       3  %
Base oils                                    3  %       2  %       3  %       2  %
LPG and other                                4  %       3  %       3  %       3  %
Total                                      100  %     100  %     100  %     100  %



(1)Crude charge represents the barrels per day of crude oil processed at our
refineries.
(2)Refinery throughput represents the barrels per day of crude and other
refinery feedstocks input to the crude units and other conversion units at our
refineries.
(3)Represents barrels sold of refined products produced at our refineries
(including HFC Asphalt) and does not include volumes of refined products
purchased for resale or volumes of excess crude oil sold.
(4)Represents crude charge divided by total crude capacity (BPSD). Our
consolidated crude capacity is 405,000 BPSD.
(5)Represents average amount per produced barrel sold, which is a non-GAAP
measure. Reconciliations to amounts reported under GAAP are provided under
"Reconciliations to Amounts Reported Under Generally Accepted Accounting
Principles" following Item 3 of Part I of this Form 10-Q.
(6)Represents total refining segment operating expenses, exclusive of
depreciation and amortization and Cheyenne Refinery operating expenses, divided
by sales volumes of refined products produced at our refineries.
(7)Represents total refining segment operating expenses, exclusive of
depreciation and amortization and Cheyenne Refinery operating expenses, divided
by refinery throughput.


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Lubricants and Specialty Products Operating Data

The following table sets forth information about our lubricants and specialty
products operations.
                                                     Three Months Ended June 30,                          Six Months Ended June 30,
                                                   2021                      2020                      2021                      2020
Lubricants and Specialty Products
Throughput (BPD)                                      19,310                    16,370                    19,860                    19,060
Sales of produced refined products
(BPD)                                                 36,670                    26,990                    34,630                    31,900

Sales of produced refined products:
Finished products                                         51  %                     56  %                     52  %                     51  %
Base oils                                                 29  %                     19  %                     27  %                     23  %
Other                                                     20  %                     25  %                     21  %                     26  %
Total                                                    100  %                    100  %                    100  %                    100  %


Supplemental financial data attributable to our Lubricants and Specialty Products segment is presented below.


                                                                                                                     Total Lubricants
                                                                      Rack Forward                                    and Specialty
                                               Rack Back (1)              (2)               Eliminations (3)             Products
                                                                                  (In thousands)
Three months ended June 30, 2021
Sales and other revenues                     $      254,485          $   629,211          $        (214,507)         $     669,189
Cost of products sold                        $      163,280          $   542,445          $        (214,507)         $     491,218
Operating expenses                           $       29,106          $    32,204          $               -          $      61,310
Selling, general and administrative
expenses                                     $        5,914          $    31,669          $               -          $      37,583
Depreciation and amortization                $        6,230          $    12,922          $               -          $      19,152

Income from operations                       $       49,955          $     9,971          $               -          $      59,926

Three months ended June 30, 2020
Sales and other revenues                     $       85,857          $   343,927          $         (72,497)         $     357,287
Cost of products sold                        $       67,210          $   263,634          $         (72,497)         $     258,347
Operating expenses                           $       21,034          $    26,806          $               -          $      47,840
Selling, general and administrative
expenses                                     $        5,617          $    30,302          $               -          $      35,919
Depreciation and amortization                $        5,877          $    13,902          $               -          $      19,779
Long-lived asset impairment                  $      167,017          $    37,691          $               -          $     204,708
Loss from operations                         $     (180,898)         $   (28,408)         $               -          $    (209,306)


Six months ended June 30, 2021
Sales and other revenues                     $  427,927          $ 

1,112,457 $ (346,632) $ 1,193,752 Cost of products sold

$  295,812          $   873,561          $ (346,632)         $   822,741
Operating expenses                           $   57,727          $    64,336          $        -          $   122,063
Selling, general and administrative
expenses                                     $   12,653          $    70,483          $        -          $    83,136
Depreciation and amortization                $   13,535          $    25,738          $        -          $    39,273

Income from operations                       $   48,200          $    78,339          $        -          $   126,539

Six months ended June 30, 2020
Sales and other revenues                     $  250,686          $   817,984          $ (184,780)         $   883,890
Cost of products sold                        $  247,810          $   586,697          $ (184,780)         $   649,727
Operating expenses                           $   44,303          $    57,668          $        -          $   101,971
Selling, general and administrative
expenses                                     $   10,980          $    73,901          $        -          $    84,881
Depreciation and amortization                $   16,744          $    25,084          $        -          $    41,828
Long-lived asset impairment                  $  167,017          $    37,691          $        -          $   204,708
Income (loss) from operations                $ (236,168)         $    

36,943 $ - $ (199,225)




(1) Rack Back consists of our PCLI base oil production activities, by-product
sales to third parties and intra-segment base oil sales to Rack Forward.
(2) Rack Forward activities include the purchase of base oils from Rack Back and
the blending, packaging, marketing and distribution and sales of finished
lubricants and specialty products to third parties.
(3) Intra-segment sales of Rack Back produced base oils to Rack Forward are
eliminated under the "Eliminations" column.
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Results of Operations - Three Months Ended June 30, 2021 Compared to Three Months Ended June 30, 2020

Summary


Net income attributable to HollyFrontier stockholders for the three months ended
June 30, 2021 was $168.9 million ($1.03 per basic and diluted share), a $345.5
million increase from a net loss of $176.7 million ($(1.09) per basic and
diluted share) for the three months ended June 30, 2020. The increase in net
income was principally due to long-lived asset impairment charges of $436.9
million for the three months ended June 30, 2020, partially offset by lower of
cost or market inventory reserve adjustments that increased pre-tax earnings by
$118.8 million for the three months ended June 30, 2021 as compared to $269.9
million for the three months ended June 30, 2020. Refinery gross margins for the
three months ended June 30, 2021 increased to $11.71 per produced barrel sold
from $8.08 for the three months ended June 30, 2020.

Sales and Other Revenues
Sales and other revenues increased 122% from $2,062.9 million for the three
months ended June 30, 2020 to $4,577.1 million for the three months ended
June 30, 2021 due to the increase in sales prices and higher refined product
sales volumes. Sales and other revenues for the three months ended June 30, 2021
and 2020 included $27.1 million and $19.2 million, respectively, of HEP revenues
attributable to pipeline and transportation services provided to unaffiliated
parties. Additionally, sales and other revenues included $662.8 million and
$353.6 million in unaffiliated revenues related to our Lubricants and Specialty
Products segment for the three months ended June 30, 2021 and 2020,
respectively.

Cost of Products Sold
Total cost of products sold increased 184% from $1,307.1 million for the three
months ended June 30, 2020 to $3,706.9 million for the three months ended
June 30, 2021 principally due to higher crude oil costs and higher refined
product volumes. During the second quarter of 2021, we recognized a lower of
cost or market inventory valuation adjustment benefit of $118.8 million compared
to a benefit of $269.9 million for the same period in 2020.

Gross Refinery Margins
Gross refinery margin per produced barrel sold increased 45% from $8.08 for the
three months ended June 30, 2020 to $11.71 for the three months ended June 30,
2021. The increase was due to the effects of an increase in the average per
barrel sold sales price during the current year quarter, partially offset by
increased crude oil and feedstock prices. Gross refinery margin per barrel does
not include the non-cash effects of lower of cost or market inventory valuation
adjustments or depreciation and amortization. See "Reconciliations to Amounts
Reported Under Generally Accepted Accounting Principles" following Item 3 of
Part I of this Form 10-Q for a reconciliation to the income statement of sale
prices of products sold and cost of products purchased.

Operating Expenses
Operating expenses, exclusive of depreciation and amortization, increased 10%
from $303.4 million for the three months ended June 30, 2020 to $334.2 million
for the three months ended June 30, 2021 primarily due to an increase in repair
and maintenance costs and the increase in natural gas prices and natural gas
utilization compared to the three months ended June 30, 2020. Lower natural gas
prices and utilization during 2020 were primarily the result of the COVID-19
pandemic.

Selling, General and Administrative Expenses
Selling, general and administrative expenses of $77.8 million for the three
months ended June 30, 2021 were consistent with the same period in the prior
year.

Depreciation and Amortization Expenses
Depreciation and amortization decreased 5% from $130.2 million for the three
months ended June 30, 2020 to $124.0 million for the three months ended June 30,
2021. This decrease was primarily due to lower capitalized refinery turnaround
costs during 2020 and lower depreciation expense resulting from the assets
impaired in the second quarter of 2020.

Long-lived Asset Impairment
During the three months ended June 30, 2020, we recorded long-lived asset
impairment charges of $232.2 million related to our Cheyenne Refinery and $204.7
million related to PCLI. See Note 1 "Description of Business and Presentation of
Financial Statements" in the Notes to Consolidated Financial Statements for
additional information on these impairments.

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Interest Expense
Interest expense was $28.9 million for the three months ended June 30, 2021
compared to $32.7 million for the three months ended June 30, 2020. This
decrease was primarily due to net gains related to our catalyst financing
arrangement during the three months ended June 30, 2021 as compared to net
losses during the same period in the prior year, partially offset by interest
expense on our senior notes issued in September 2020.

For the three months ended June 30, 2021 and 2020, interest expense attributable to our HEP segment was $13.9 million and $12.1 million, respectively.



Gain on Sales-type Leases
During the second quarter of 2020, HEP and Delek US Holdings, Inc. renewed the
original throughput agreement on specific HEP assets. Portions of the new
throughput agreement meet the definition of sales-type leases, which resulted in
an accounting gain of $33.8 million upon the initial recognition of the
sales-type lease during the three months ended June 30, 2020.

Gain on Foreign Currency Transactions
Remeasurement adjustments resulting from the foreign currency conversion of the
intercompany financing notes payable by PCLI net of mark-to-market valuations on
foreign exchange forward contracts with banks which hedge the foreign currency
exposure on these intercompany notes were net gains of $0.6 million and $2.3
million for the three months ended June 30, 2021 and 2020, respectively. For the
three months ended June 30, 2021 and 2020, gain on foreign currency transactions
included a loss of $6.1 million and $14.3 million, respectively, on foreign
exchange forward contracts (utilized as an economic hedge).

Other, Net For the three months ended June 30, 2021, HEP recorded a $5.3 million gain related to the sale of certain pipeline assets.



Income Taxes
For the three months ended June 30, 2021, we recorded an income tax expense of
$123.5 million compared to a benefit of $30.9 million for the three months ended
June 30, 2020. This increase was principally due to pre-tax income during the
three months ended June 30, 2021 compared to a pre-tax loss in the same period
of 2020. Our effective tax rates were 38.8% and 17.0% for the three months ended
June 30, 2021 and 2020, respectively. The increase in the effective tax rate is
principally due to the relationship between the pre-tax results and the earnings
attributable to the noncontrolling interest that is not included in income for
tax purposes. The difference in the U.S. federal statutory rate and the
effective tax rate for the three months ended June 30, 2021 was primarily due to
the reversal of benefits recorded in the previous quarter due to increased
income, partially offset by benefits recorded on state tax rate decreases
enacted in the current quarter.


Results of Operations - Six Months Ended June 30, 2021 Compared to Six Months Ended June 30, 2020

Summary


Net income attributable to HollyFrontier stockholders for the six months ended
June 30, 2021 was $317.1 million ($1.92 per basic and diluted share), a $798.4
million increase compared to a net loss of $481.3 million ($(2.97) per basic and
diluted share) for the six months ended June 30, 2020. Net income increased
principally due to lower of cost or market inventory reserve adjustments that
increased pre-tax earnings by $318.9 million for the six months ended June 30,
2021 and decreased pre-tax earnings by $290.6 million for the six months ended
June 30, 2020. In addition, we recorded long-lived asset impairment charges of
$436.9 million for the six months ended June 30, 2020. The increase in net
income for the six months ended June 30, 2021 was partially offset by the impact
of winter storm Uri, which increased natural gas costs by approximately $65
million across our refining system. Refinery gross margins for the six months
ended June 30, 2021 increased to $10.07 per barrel sold from $9.69 for the six
months ended June 30, 2020.

Sales and Other Revenues
Sales and other revenues increased 48% from $5,463.5 million for the six months
ended June 30, 2020 to $8,081.4 million for the six months ended June 30, 2021
due to a year-over-year increase in sales prices and higher refined product
sales volumes. Sales and other revenues for the six months ended June 30, 2021
and 2020 include $52.4 million and $45.7 million, respectively, in HEP revenues
attributable to pipeline and transportation services provided to unaffiliated
parties. Additionally, sales and other revenues included $1,184.8 million and
$877.1 million in unaffiliated revenues related to our Lubricants and Specialty
Products segment for the six months ended June 30, 2021 and 2020, respectively.

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Cost of Products Sold
Total cost of products sold increased 42% from $4,561.3 million for the six
months ended June 30, 2020 to $6,467.2 million for the six months ended June 30,
2021 principally due to the increase in crude oil and feedstock prices and
refined product sales volumes. We recognized a lower of cost or market inventory
valuation benefit of $318.9 million for the six months ended June 30, 2021
compared to a charge of $290.6 million for the same period of 2020, resulting in
no lower of cost or market reserve at June 30, 2021.

Gross Refinery Margins
Gross refinery margin per barrel sold increased 4% from $9.69 for the six months
ended June 30, 2020 to $10.07 for the six months ended June 30, 2021 principally
due to the increase in the average per barrel sold sales prices, partially
offset by the increase in crude oil and feedstock prices. Gross refinery margin
per barrel does not include the non-cash effects of lower of cost or market
inventory valuation adjustments or depreciation and amortization. See
"Reconciliations to Amounts Reported Under Generally Accepted Accounting
Principles" following Item 3 of Part I of this Form 10-Q for a reconciliation to
the income statement of sales prices of products sold and cost of products
purchased.

Operating Expenses
Operating expenses, exclusive of depreciation and amortization, increased 16%
from $631.7 million for the six months ended June 30, 2020 to $734.1 million for
the six months ended June 30, 2021 primarily due to the increase in natural gas
prices and natural gas utilization and higher planned and unplanned repair and
maintenance costs compared to the six months ended June 30, 2020. The increase
in natural gas prices was due in part to winter storm Uri during the first
quarter of 2021.

Selling, General and Administrative Expenses
Selling, general and administrative expenses of $159.7 million for the six
months ended June 30, 2021 were consistent with the same period in the prior
year.

Depreciation and Amortization Expenses
Depreciation and amortization decreased 8% from $270.8 million for the six
months ended June 30, 2020 to $248.1 million for the six months ended June 30,
2021. This decrease was principally due to lower capitalized refinery turnaround
costs during 2020 and lower depreciation expense resulting from the assets
impaired in the second quarter of 2020.

Long-lived Asset Impairment
During the six months ended June 30, 2020, we recorded long-lived asset
impairment charges of $232.2 million that related to our Cheyenne Refinery and
$204.7 million related to PCLI. See Note 1 "Description of Business and
Presentation of Financial Statements" in the Notes to Consolidated Financial
Statements for additional information on these impairments.

Interest Expense
Interest expense was $67.3 million for the six months ended June 30, 2021
compared to $55.3 million for the six months ended June 30, 2020. This increase
was primarily due to interest expense on our senior notes issued in September
2020 and net losses related to our catalyst financing arrangements during the
six months ended June 30, 2021 as compared to net gains during the six months
ended June 30, 2020. The increase was partially offset by lower weighted average
balance and lower market interest rates on HEP's credit facility during the six
months ended June 30, 2021.

For the six months ended June 30, 2021 and 2020, interest expense attributable to our HEP Segment was $27.2 million and $28.2 million, respectively.



Gain on Tariff Settlement
For the six months ended June 30, 2021, we recorded a gain of $51.5 million upon
the settlement of a tariff rate case. See Note 13 "Contingencies" in the Notes
to Consolidated Financial Statements for additional information on this case and
settlement.

Gain on Sales-type Leases
During the second quarter of 2020, HEP and Delek US Holdings, Inc. renewed the
original throughput agreement on specific HEP assets. Portions of the new
throughput agreement meet the definition of sales-type leases, which resulted in
an accounting gain of $33.8 million upon the initial recognition of the
sales-type lease during the six months ended June 30, 2020.

Loss on Early Extinguishment of Debt
For the six months ended June 30, 2020, HEP recorded a $25.9 million loss on the
redemption of its $500 million aggregate principal amount of 6.0% senior notes
maturing August 2024 for $522.5 million.

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Loss on Foreign Currency Transactions
Remeasurement adjustments resulting from the foreign currency conversion of the
intercompany financing notes payable by PCLI net of mark-to-market valuations on
foreign exchange forward contracts with banks which hedge the foreign currency
exposure on these intercompany notes were net losses of $0.7 million and $1.9
million for the six months ended June 30, 2021 and 2020, respectively. For the
six months ended June 30, 2021 and 2020, loss on foreign currency transactions
included a net loss of $12.8 million and a gain of $19.2 million, respectively,
on foreign exchange forward contracts (utilized as an economic hedge).

Other, Net
For the six months ended June 30, 2021, HEP recorded a $5.3 million gain related
to the sale of certain pipeline assets.

Income Taxes
For the six months ended June 30, 2021, we recorded an income tax expense of
$95.2 million compared to a benefit of $193.1 million for the six months ended
June 30, 2020. This change to income tax expense in 2021 from income tax benefit
in 2020 was principally due to pre-tax income during the six months ended
June 30, 2021 as compared to a pre-tax loss during 2020. Our effective tax rates
were 20.1% and 30.3% for the six months ended June 30, 2021 and 2020,
respectively. The year-over-year decrease in the effective tax rate is
principally due to the relationship between the pre-tax results and the earnings
attributable to the noncontrolling interest that is not included in income for
tax purposes. The difference in the U.S. federal statutory rate and the
effective tax rate for the six months ended June 30, 2021 was primarily due to
the tax effects of income attributable to noncontrolling interests.


LIQUIDITY AND CAPITAL RESOURCES



HollyFrontier Credit Agreement
On April 30, 2021, we amended our $1.35 billion senior unsecured revolving
credit facility to extend the maturity date to April 30, 2026 (the
"HollyFrontier Credit Agreement"). The HollyFrontier Credit Agreement may be
used for revolving credit loans and letters of credit from time to time and is
available to fund general corporate purposes. At June 30, 2021, we were in
compliance with all covenants, had no outstanding borrowings and had outstanding
letters of credit totaling $2.3 million under the HollyFrontier Credit
Agreement.

HollyFrontier Financing Arrangements
Certain of our wholly-owned subsidiaries entered into financing arrangements
whereby such subsidiaries sold a portion of their precious metals catalyst to a
financial institution and then leased back the precious metals catalyst in
exchange for cash. The volume of the precious metals catalyst and the lease rate
are fixed over the term of each lease, and the lease payments are recorded as
interest expense. The current leases mature on February 1, 2022. Upon maturity,
we must either satisfy the obligation at fair market value or refinance to
extend the maturity.

HEP Credit Agreement
On April 30, 2021, HEP amended its $1.4 billion senior secured revolving credit
facility decreasing the commitments under the facility to $1.2 billion and
extending the maturity to July 27, 2025 (the "HEP Credit Agreement"). The HEP
Credit Agreement is available to fund capital expenditures, investments,
acquisitions, distribution payments, working capital and for general partnership
purposes. It is also available to fund letters of credit up to a $50 million
sub-limit and continues to provide for an accordion feature that allows HEP to
increase the commitments under the HEP Credit Agreement up to a maximum amount
of $1.7 billion. During the six months ended June 30, 2021, HEP received
advances totaling $141.0 million and repaid $184.5 million under the HEP Credit
Agreement. At June 30, 2021, HEP was in compliance with all of its covenants,
had outstanding borrowings of $870.0 million and no outstanding letters of
credit under the HEP Credit Agreement.

See Note 9 "Debt" in the Notes to Consolidated Financial Statements for additional information on our debt instruments.

Liquidity


We believe our current cash and cash equivalents, along with future internally
generated cash flow and funds available under our credit facilities, will
provide sufficient resources to fund currently planned capital projects and our
liquidity needs for the foreseeable future. We expect that, to the extent
necessary, we can raise additional funds from time to time through equity or
debt financings in the public and private capital markets. In addition,
components of our growth strategy include the expansion of existing units at our
facilities and selective acquisition of complementary assets for our refining
operations intended to increase earnings and cash flow. In connection with the
the Puget Sound Acquisition, our Board of Directors approved a one-year
suspension of the regular quarterly dividend effective with the dividend to be
declared for the first quarter of 2021 and is expected to resume the dividend
after such time.

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Our standalone (excluding HEP) liquidity was approximately $2.7 billion at
June 30, 2021, consisting of cash and cash equivalents of $1.4 billion and an
undrawn $1.35 billion credit facility.

We consider all highly-liquid instruments with a maturity of three months or
less at the time of purchase to be cash equivalents. These primarily consist of
investments in conservative, highly-rated instruments issued by financial
institutions, government and corporate entities with strong credit standings and
money market funds. Cash equivalents are stated at cost, which approximates
market value.

In November 2019, our Board of Directors approved a $1.0 billion share
repurchase program, which replaced all existing share repurchase programs,
authorizing us to repurchase common stock in the open market or through
privately negotiated transactions. The timing and amount of stock repurchases
will depend on market conditions and corporate, regulatory and other relevant
considerations. This program may be discontinued at any time by the Board of
Directors. As of June 30, 2021, we had not repurchased common stock under this
stock repurchase program. In addition, we are authorized by our Board of
Directors to repurchase shares in an amount sufficient to offset shares issued
under our compensation programs. We do not intend to repurchase common stock
under our $1.0 billion share repurchase program until completion of our ongoing
renewables capital projects at the earliest.
Cash Flows - Operating Activities

Six Months Ended June 30, 2021 Compared to Six Months Ended June 30, 2020
Net cash flows provided by operating activities were $490.1 million for the six
months ended June 30, 2021 compared to $309.3 million for the six months ended
June 30, 2020, an increase of $180.8 million. The increase in operating cash
flows was primarily due to the increase in gross refinery margins and $51.5
million received upon settlement of a tariff rate case, partially offset by
higher operating expenses.

Changes in working capital increased operating cash flows by $149.0 million and
decreased operating cash flows by $103.3 million, for the six months ended
June 30, 2021 and 2020, respectively. Changes in working capital items adjust
for the timing of receipts and payments of actual cash.

Cash Flows - Investing Activities and Planned Capital Expenditures



Six Months Ended June 30, 2021 Compared to Six Months Ended June 30, 2020
Net cash flows used for investing activities were $322.3 million for the six
months ended June 30, 2021 compared to $131.7 million for the six months ended
June 30, 2020, an increase of $190.6 million. Cash expenditures for properties,
plants and equipment for the first six months of 2021 increased to $332.8
million from $129.7 million for the same period in 2020, primarily due to
expenditures related to our renewable diesel units that are expected to be
completed in early 2022. Cash expenditures for properties, plants and equipment
include HEP capital expenditures of $57.7 million and $30.7 million for the six
months ended June 30, 2021 and 2020, respectively. For the six months ended
June 30, 2020, HEP also invested $2.4 million in the Cushing Connect Pipeline &
Terminal LLC joint venture.

HollyFrontier Corporation
Each year our Board of Directors approves our annual capital budget which
includes specific projects that management is authorized to undertake.
Additionally, when conditions warrant or as new opportunities arise, additional
projects may be approved. The funds appropriated for a particular capital
project may be expended over a period of several years, depending on the time
required to complete the project. Therefore, our planned capital expenditures
for a given year consist of expenditures appropriated in that year's capital
budget plus expenditures for projects appropriated in prior years which have not
yet been completed. Refinery turnaround spending is amortized over the useful
life of the turnaround.

The refining industry is capital intensive and requires on-going investments to
sustain our refining operations. This includes replacement of, or rebuilding,
refinery units and components that extend the useful life. We also invest in
projects that improve operational reliability and profitability via enhancements
that improve refinery processing capabilities as well as production yield and
flexibility. Our capital expenditures also include projects related to renewable
diesel, environmental, health and safety compliance and include initiatives as a
result of federal and state mandates.

Our refinery operations and related emissions are highly regulated at both
federal and state levels, and we invest in our facilities as needed to remain in
compliance with these standards. Additionally, when faced with new emissions or
fuels standards, we seek to execute projects that facilitate compliance and also
improve the operating costs and / or yields of associated refining processes.

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HEP
Each year the Holly Logistic Services, L.L.C. board of directors approves HEP's
annual capital budget, which specifies capital projects that HEP management is
authorized to undertake. Additionally, at times when conditions warrant or as
new opportunities arise, special projects may be approved. The funds allocated
for a particular capital project may be expended over a period in excess of a
year, depending on the time required to complete the project. Therefore, HEP's
planned capital expenditures for a given year consist of expenditures approved
for capital projects included in its current year capital budget as well as, in
certain cases, expenditures approved for capital projects in capital budgets for
prior years. In addition, HEP may spend funds periodically to perform capital
upgrades or additions to its assets where a customer reimburses HEP for such
costs. The upgrades or additions would generally benefit the customer over the
remaining life of the related service agreements.

Expected capital and turnaround cash spending for 2021 is as follows:


                                                    Expected Cash Spending 

Range


                                                           (In millions)
    HollyFrontier Capital Expenditures
    Refining                                 $         190.0                $   220.0
    Renewables                                         625.0                    675.0
    Lubricants and Specialty Products                   40.0                     50.0
    Turnarounds and catalyst                           320.0                    350.0
    Total HollyFrontier                              1,175.0                  1,295.0

    HEP
    Maintenance                                         17.0                     21.0
    Expansion and joint venture investment              38.0                     42.0
    Refining unit turnarounds                            5.0                      8.0
    Total HEP                                           60.0                     71.0
    Total                                    $       1,235.0                $ 1,366.0

Cash Flows - Financing Activities



Six Months Ended June 30, 2021 Compared to Six Months Ended June 30, 2020
For the six months ended June 30, 2021, our net cash flows used for financing
activities were $138.5 million. During the six months ended June 30, 2021, we
paid $57.7 million in dividends and $7.9 million of deferred financing costs in
connection with the amendment of the HollyFrontier Credit Agreement in April
2021. During the six months ended June 30, 2021, HEP had net repayments of $43.5
million under the HEP Credit Agreement and paid $6.6 million of deferred
financing costs in connection with the amendment of the HEP Credit Agreement in
April 2021. In addition, HEP paid distributions of $38.2 million to
noncontrolling interests and received contributions from noncontrolling
interests of $17.6 million.

For the six months ended June 30, 2020, our net cash flows used for financing
activities were $155.5 million. During the six months ended June 30, 2020, we
paid $114.4 million in dividends. HEP received $168.0 million and repaid $138.5
million under the HEP Credit Agreement, paid $522.5 million upon the redemption
of HEP's 6.0% senior notes and received $491.3 million in net proceeds from the
issuance of HEP 5.0% senior notes. In addition, HEP paid distributions of $51.0
million to noncontrolling interests and received contributions from
noncontrolling interests of $13.3 million.

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Contractual Obligations and Commitments

HollyFrontier Corporation



In April 2021, we renewed a contract for terminal and storage services with a
third party for an additional 15-year term. The agreement provides for storage
capacity of 200,000 barrels per month for a total commitment of $9.4 million
over the 15 year term. In addition, the agreement provides a throughput volume
commitment of 225,000 barrels per day of crude oil for a total commitment of
$92.4 million over the 15-year term. We also had certain lease renewals that
increased our lease liabilities on our consolidated balance sheets during the
six months ended June 30, 2021. There were no other significant changes to our
long-term contractual obligations during the six months ended June 30, 2021.

HEP

During the six months ended June 30, 2021, HEP had net repayments of $43.5 million resulting in $870.0 million of outstanding borrowings under the HEP Credit Agreement at June 30, 2021.

There were no other significant changes to HEP's long-term contractual obligations during this period.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES



Our discussion and analysis of our financial condition and results of operations
are based upon our consolidated financial statements, which have been prepared
in accordance with accounting principles generally accepted in the United
States. The preparation of these financial statements requires us to make
estimates and judgments that affect the reported amounts of assets, liabilities,
revenues and expenses, and related disclosure of contingent assets and
liabilities as of the date of the financial statements. Actual results may
differ from these estimates under different assumptions or conditions.

Our significant accounting policies are described in "Part II, Item 7.
Management's Discussion and Analysis of Financial Condition and Results of
Operations - Critical Accounting Policies" in our Annual Report on Form 10-K for
the year ended December 31, 2020. Certain critical accounting policies that
materially affect the amounts recorded in our consolidated financial statements
include the use of the last-in, first-out ("LIFO") method of valuing certain
inventories, assessing the possible impairment of certain long-lived assets and
goodwill, and assessing contingent liabilities for probable losses.

Inventory Valuation: Inventories related to our refining operations are stated
at the lower of cost, using the LIFO method for crude oil and unfinished and
finished refined products, or market. In periods of rapidly declining prices,
LIFO inventories may have to be written down to market value due to the higher
costs assigned to LIFO layers in prior periods. In addition, the use of the LIFO
inventory method may result in increases or decreases to cost of sales in years
that inventory volumes decline as the result of charging cost of sales with LIFO
inventory costs generated in prior periods. An actual valuation of inventory
under the LIFO method is made at the end of each year based on the inventory
levels at that time. Accordingly, interim LIFO calculations are based on
management's estimates of expected year-end inventory levels and are subject to
the final year-end LIFO inventory valuation.

At June 30, 2021, the LIFO value of inventory was equal to cost. Future decreases in overall inventory values could result in an establishment of a lower of cost or market inventory valuation reserve and additional charges to cost of products sold.



Inventories consisting of process chemicals, materials and maintenance supplies
and RINs are stated at the lower of weighted-average cost or net realizable
value. Inventories of our Petro-Canada Lubricants and Sonneborn businesses are
stated at the lower of cost, using the FIFO method, or net realizable value.

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Goodwill and Long-lived Assets: As of June 30, 2021, our goodwill balance was
$2.3 billion, with goodwill assigned to our Refining, Lubricants and Specialty
Products and HEP segments of $1,733.5 million, $247.2 million and $312.9
million, respectively. Goodwill represents the excess of the cost of an acquired
entity over the fair value of the assets acquired and liabilities assumed.
Goodwill is not subject to amortization and is tested annually or more
frequently if an event occurs or circumstances change that would more likely
than not reduce the fair value of a reporting unit below its carrying amount.
Our goodwill impairment testing first entails either a quantitative assessment
or an optional qualitative assessment to determine whether it is more likely
than not that the fair value of a reporting unit is less than its carrying
amount. If we determine that based on the qualitative factors that it is more
likely than not that the carrying value of the reporting unit is greater than
its fair value, a quantitative test is performed in which we estimate the fair
value of the related reporting unit. If the carrying amount of a reporting unit
exceeds its fair value, the goodwill of that reporting unit is impaired, and we
measure goodwill impairment as the excess of the carrying amount of reporting
unit over the related fair value.

For purposes of long-lived asset impairment evaluation, we have grouped our
long-lived assets as follows: (i) our refinery asset groups, which include
certain HEP logistics assets, (ii) our Lubricants and Specialty Products asset
groups and (iii) our HEP asset groups, which comprises HEP assets not included
in our refinery asset groups. These asset groups represent the lowest level for
which independent cash flows can be identified. Our long-lived assets are
evaluated for impairment by identifying whether indicators of impairment exist
and if so, assessing whether the long-lived assets are recoverable from
estimated future undiscounted cash flows. The actual amount of impairment loss
measured, if any, is equal to the amount by which the asset group's carrying
value exceeds its fair value.

We continually monitor and evaluate various factors for potential indicators of
goodwill and long-lived asset impairment. A reasonable expectation exists that
further deterioration in our operating results or overall economic conditions
could result in an impairment of goodwill and / or long-lived asset impairments
at some point in the future. Future impairment charges could be material to our
results of operations and financial condition.

Contingencies


We are subject to proceedings, lawsuits and other claims related to
environmental, labor, product and other matters. We are required to assess the
likelihood of any adverse judgments or outcomes to these matters as well as
potential ranges of probable losses. A determination of the amount of reserves
required, if any, for these contingencies is made after careful analysis of each
individual issue. The required reserves may change in the future due to new
developments in each matter or changes in approach such as a change in
settlement strategy in dealing with these matters.


RISK MANAGEMENT



We use certain strategies to reduce some commodity price and operational risks.
We do not attempt to eliminate all market risk exposures when we believe that
the exposure relating to such risk would not be significant to our future
earnings, financial position, capital resources or liquidity or that the cost of
eliminating the exposure would outweigh the benefit.

Commodity Price Risk Management
Our primary market risk is commodity price risk. We are exposed to market risks
related to the volatility in crude oil and refined products, as well as
volatility in the price of natural gas used in our refining operations. We
periodically enter into derivative contracts in the form of commodity price
swaps, forward purchase and sales and futures contracts to mitigate price
exposure with respect to our inventory positions, natural gas purchases, sales
prices of refined products and crude oil costs.

Foreign Currency Risk Management
We are exposed to market risk related to the volatility in foreign currency
exchange rates. We periodically enter into derivative contracts in the form of
foreign exchange forward and foreign exchange swap contracts to mitigate the
exposure associated with fluctuations on intercompany notes with our foreign
subsidiaries that are not denominated in the U.S. dollar.

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As of June 30, 2021, we have the following notional contract volumes related to
all outstanding derivative instruments used to mitigate commodity price and
foreign currency risk:
                                                                                           Notional Contract Volumes by Year of Maturity
Derivative Instrument                         Total Outstanding Notional                   2021                                      2022                              Unit of Measure

Natural gas price swaps - long                          900,000                            900,000                                        -                          MMBTU

NYMEX futures (WTI) - short                             665,000                            665,000                                        -                          Barrels
Forward gasoline and diesel contracts
- long                                                  365,000                            365,000                                        -                          Barrels

Forward crude oil contracts -short                       90,000                             90,000                                        -                          Barrels

Foreign currency forward contracts                  434,968,532                        210,609,988                              224,358,544                          U.S. dollar
Forward commodity contracts (platinum)
(1)                                                      38,723                                  -                                   38,723                          Troy ounces


(1) Represents an embedded derivative within our catalyst financing arrangements, which may be refinanced or require repayment under certain conditions. See Note 9 "Debt" in the Notes to Consolidated Financial Statements for additional information on these financing arrangements.

The following sensitivity analysis provides the hypothetical effects of market price fluctuations to the commodity hedged under our derivative contracts:


                                                                 Estimated 

Change in Fair Value at June

30,


Commodity-based Derivative Contracts                                   2021                    2020
                                                                            

(In thousands) Hypothetical 10% change in underlying commodity prices $ 4,512 $ 2,826





Interest Rate Risk Management
The market risk inherent in our fixed-rate debt is the potential change arising
from increases or decreases in interest rates as discussed below.

For the fixed rate HollyFrontier Senior Notes and HEP Senior Notes, changes in
interest rates will generally affect fair value of the debt, but not earnings or
cash flows. The outstanding principal, estimated fair value and estimated change
in fair value (assuming a hypothetical 10% change in the yield-to-maturity
rates) for this debt as of June 30, 2021 is presented below:
                                                                    Estimated
                                 Outstanding       Estimated        Change in
                                  Principal       Fair Value       Fair Value
                                                (In thousands)
HollyFrontier Senior Notes      $ 1,750,000      $ 1,948,756      $    23,904

HEP Senior Notes                $   500,000      $   512,245      $    13,211



For the variable rate HEP Credit Agreement, changes in interest rates would
affect cash flows, but not the fair value. At June 30, 2021, outstanding
borrowings under the HEP Credit Agreement were $870.0 million. A hypothetical
10% change in interest rates applicable to the HEP Credit Agreement would not
materially affect cash flows.

Our operations are subject to hazards of petroleum processing operations,
including but not limited to fire, explosion, cyberattacks and weather-related
perils. We maintain various insurance coverages, including property damage,
business interruption and cyber insurance, subject to certain deductibles and
insurance policy terms and conditions. We are not fully insured against certain
risks because such risks are not fully insurable, coverage is unavailable, or
premium costs, in our judgment, do not justify such expenditures.

Financial information is reviewed on the counterparties in order to review and
monitor their financial stability and assess their ongoing ability to honor
their commitments under the derivative contracts. We have not experienced, nor
do we expect to experience, any difficulty in the counterparties honoring their
commitments.

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We have a risk management oversight committee consisting of members from our
senior management. This committee oversees our risk enterprise program, monitors
our risk environment and provides direction for activities to mitigate
identified risks that may adversely affect the achievement of our goals.

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