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HollyFrontier

hfc · NYSE Energy
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Industry Oil & Gas Refining & Marketing
Employees 1001-5000
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FY2015 Annual Report · HollyFrontier
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2015 ANNUAL REPORT

EL DORADO REFINERY

•  Located in El Dorado, Kansas

•  135,000 BPSD capacity and Nelson Complexity rating of 11.8

•  Processes sour and heavy (Canadian) crude oils into high-value light products 

•  Distributes to high-margin markets in Colorado and Mid-Continent/Plains states

TULSA REFINERY

•  Located in Tulsa, Oklahoma

•  125,000 BPSD capacity and Nelson Complexity rating of 14.0

•  Processes predominantly sweet crude oil with up to 10,000 BPD of heavy 

Canadian crudes

•  Distributes to the Mid-Continent states

NAVAJO REFINERY

•  Located in Artesia, New Mexico, and operated in conjunction with  

a refining facility 65 miles east in Lovington, New Mexico

•  100,000 BPSD capacity and Nelson Complexity rating of 11.8

•  Processes sour and heavy crude oils into high-value light products

•  Distributes to high-margin markets in Arizona, New Mexico and West Texas

CHEYENNE REFINERY

•  Located in Cheyenne, Wyoming

•  52,000 BPSD capacity and Nelson Complexity rating of 8.9

•  Processes sour and heavy Canadian crude oils into high-value light products

•  Distributes to high-margin Eastern Rockies and Plains states

WOODS CROSS REFINERY

•  Located in Woods Cross, Utah (near Salt Lake City)

•  31,000 BPSD capacity and Nelson Complexity rating of 12.5

•  Processes regional sweet and advantaged waxy crude as well as  

Canadian sour crude oils

•  Distributes to high-margin markets in Utah, Idaho, Nevada, Wyoming  

and eastern Washington

HOLLY ENERGY PARTNERS

•  75% joint-venture interest in the UNEV Pipeline – a 427-mile refined product 

pipeline running from Salt Lake City, Utah, to Las Vegas, Nevada

•  50% joint-venture interest in the Frontier Pipeline – a 289-mile crude oil pipeline 
running from Casper, Wyoming, to Frontier Station, Utah, through a connection 
to the SLC Pipeline

Mid-Continent
Sales of Refinery 
Produced Products

258,420 BPD

The Mid-Continent 
Region comprises our 
El Dorado and Tulsa 
refineries and has a 
combined crude oil 
processing capacity  
of 260,000 BPSD.

Southwest
Sales of Refinery 
Produced Products

111,580 BPD

The Southwest Region  
consists of our Navajo 
refinery and has a crude 
oil processing capacity 
of 100,000 BPSD. In  
addition, we manu-
facture and market 
commodity and mod-
ified asphalt products 
throughout the  
Southwest Region.

Rocky Mountain
Sales of Refinery 
Produced Products

68,000 BPD

The Rocky Mountain 
Region comprises our 
Cheyenne and Woods 
Cross refineries and has  
a combined crude oil 
processing capacity of 
83,000 BPSD.

Crude and  
Feedstocks 
• Sweet crude oil 59%
• Sour crude oil 21%
•  Heavy sour  

crude oil 15%

•  Other feedstocks  

and blends 5%

Crude and  
Feedstocks 
• Sweet crude oil 36%
•  Sour crude oil 54%
•  Other feedstocks  

and blends 10%

Product Mix
• Gasoline 50%
• Diesel fuels 33%
• Jet fuels 7%
• Other 4%
•  Lubricants 4%
• Asphalt 2%

Product Mix
• Gasoline 55%
• Diesel fuels 39%
• Other 5%
• Asphalt 1%

SOUTHWEST

Crude and  
Feedstocks 
• Sweet crude oil 42%
•  Heavy sour  

crude oil 37%

•  Black wax  

crude oil 13%

•  Other feedstocks  

and blends 8%

Product Mix
• Gasoline 57%
• Diesel fuels 36%
• Other 5%
• Asphalt 2%

•  25% joint-venture interest in the SLC Pipeline – a 95-mile 
crude oil pipeline system that serves refineries in the  
Salt Lake City area

•  3,400 miles of crude oil and petroleum product pipelines

•  14 million barrels of refined product and crude oil storage

Holly Energy Partners owns and operates  
substantially all of the refined product pipeline 
and terminalling assets that support our refining 
and marketing operations in the Mid-Continent, 
Southwest and Rocky Mountain Regions of the 
United States.

•  9 terminals and 7 rack facilities

ROCKY MOUNTAINMID-CONTINENTPURE-PLAY   
COMPETITIVE REFINER

•  Five refineries with  

443,000 barrels per stream  
day refining capacity

ATTRACTIVE NICHE PRODUCT 
MARKETS WITH ADVANTAGED 
CRUDE SUPPLY

•  Rocky Mountains, Southwest  

and Mid-Continent/Plains states

STRONG INVESTMENT   
TRACK RECORD 

•  Future growth focused  
on underwritten projects

•  Woods Cross, El Dorado and 
Tulsa Refineries purchased  
at industry lows on a per  
barrel basis

STRONG FINANCIAL   
PERFORMANCE

•  Industry-leading returns  

on capital

•  Best-in-class net income  
per barrel crude capacity

•  Track record of cash return  

to shareholders

• Strong balance sheet

HEP OWNERSHIP

•  Stable cash flows from HEP 
through quarterly regular  
and incentive distributions

•  HFC owns 39% of HEP  

including the 2% GP interest

•  HFC received $90 million in  
cash distributions in 2015*

* Q4 2014 through Q3 2015  
quarterly LP and GP distributions, 
announced and paid in 2015

HollyFrontier Corporation

Pipelines

443,000 capacity

12.1 complexity

HollyFrontier refineries

HEP terminals

Third-party terminals

  Other HollyFrontier assets

HEP pipelines

 UNEV HEP  

product pipeline

Third-party product

Third-party crude

HollyFrontier pipeline

PhoenixTucsonLas VegasDenverBurleyCasperBillingsBoiseMountain HomeSalt Lake CitySpokaneHoustonChicagoMinneapolisEdmonton HardistyGrand ForksGuernseyOmahaExpress PlattePortaJayhawkTexaco/ButteSidneyDes MoinesKansas CityWichitaCushingMoriartyWichita FallsBloomfieldCedar CityAbileneOrlaEl PasoDuncanAlbuquerquePADD IVPADD VPADD IIIPADD IPADD IINAVAJOEL DORADOWOODS CROSSCHEYENNETULSA 
 
 
 
 
 
 
 
A NICHE 
PURE-PLAY 
REFINER

Proximity to Growing 
North American  
Crude Production

All five HFC refineries sit 

close to production growth.

PhoenixTucsonLas VegasDenverBurleyCasperBillingsBoiseMountain HomeSalt Lake CitySpokaneHoustonChicagoMinneapolisEdmonton HardistyGrand ForksGuernseyOmahaExpress PlattePortaJayhawkTexaco/ButteSidneyDes MoinesKansas CityWichitaCushingMoriartyWichita FallsBloomfieldCedar CityAbileneOrlaEl PasoDuncanAlbuquerquePADD IVPADD VPADD IIIPADD IPADD IINAVAJOEL DORADOWOODS CROSSCHEYENNETULSATO OUR STOCKHOLDERS

2015 was a year of transition and continuous improvement 
for HollyFrontier. We established and began executing a 
strategy to both improve our refining operations through 
reliability improvement initiatives, and enhance our gross 
margin and free cash generation through commercial  
optimization and opportunity capital investments. Our 
reported full-year operational results illustrate the initial 
benefits and execution of our business improvement plan. 

We reported strong earnings driven by record refinery  
utilization rates and lower operating costs. We also made 
significant progress on key capital investment projects 
that are making our refining systems even stronger. We  
are confident that the actions we are taking will enable  
us to increase our competitive advantages and extend  
our lengthy track record of success to create further value  
for all HollyFrontier stockholders. 

Solid Financial Results in a Volatile Market Environment
HollyFrontier’s financial results in 2015 reflect the inherent 
advantages of our refineries, our focus on operational  
execution and impact of the investments we are making  
to improve our refining capabilities, safety and reliability. 

In 2015, we achieved: 

•   Net income attributable to HFC stockholders  
of $879 million (excluding the non-cash lower  
of cost or market “LOCM” adjustment);

•  Gross refining margins of $16.07 per produced barrel;

•  Operating cash flow of $980 million; and

•   A sterling balance sheet with $211 million in cash and 
short-term investments as of December 31, 2015, and 
just $31 million in total debt (exclusive of HEP debt);

•   Approximately $990 million in capital returned  

to shareholders. 

We benefited from the growing demand for gasoline and 
strong margins through most of the year. The commodity 
price environment remains volatile and we are confident 
that our core motor fuels and specialty products will be 
highly demanded going forward. In addition, the actions 
we are taking to increase our core competitive advantages 
will position us to meet our mission of achieving superior 
sustainable financial performance and profitable growth. 

Prudent Investments to Support Continued Growth 
In 2015, we invested more than $600 million to enhance 
and expand our manufacturing operations, improve safety 
and reliability and minimize our environmental impact.  
We are nearing completion on several components of  
our large capital investment program. Going forward, our 
focus is on our opportunity capital program, where we  
will deploy small amounts of capital targeted at extract-
ing more out of our existing refinery units. Combined,  
we expect these large capital and opportunity capital 
investments will help us capture an annual average 
EBITDA opportunity of $365 million by 2018. Some of  
the highlights of the capital projects from 2015 include: 

•   El Dorado Naphtha Fractionation: This project to 

increase yields by reducing byproducts such as fuel gas, 
propane and butane and reduce the benzene content of 
our gasoline pool was completed. Through it, we gained 
an additional 2,000 barrels per day of gasoline production. 
In September 2015, HollyFrontier dropped down the 
newly constructed naphtha fractionation and hydrogen 
generation units to our MLP affiliate Holly Energy Partners 
for consideration of approximately $62 million. 

•   Cheyenne Hydrogen Upgrade: At the Cheyenne Refinery, 
we completed installation of a new hydrogen plant in  
the fourth quarter resulting in improved liquid yield and 
the ability to process higher volumes of advantaged 
heavy crude. 

•   Woods Cross Refinery Expansion: The initial phase of 
the Woods Cross expansion from 31,000 barrels per  
day to 45,000 barrels per day is expected to be put into 
operation during the first quarter of 2016. Given the 
commodity price volatility which persisted through 2015, 
we elected to invest an incremental $20 million in this 
project to allow for greater crude slate flexibility. 

•   Opportunity Capital Program: Going forward, our  

focus is on our opportunity capital investment program 
targeting liquid yield improvement and debottlenecking 
opportunities. In 2016, work is scheduled at both our 
Tulsa and Cheyenne Refineries, where the catalytic 
cracking units will be modernized driving an improve-
ment in liquid yield. Work is also underway to address 
bottlenecks at our El Dorado Refinery which we expect 
will increase crude capacity by 6,000 barrel per day  
at minimal cost. Together we expect the opportunity 
capital investments identified to generate $200 million  
in annual EBITDA by the end of 2018. 

2 

HollyFrontier Corporation 2015 Annual Report

Michael C. Jennings 
Executive Chairman 

George J. Damiris  
Chief Executive Officer,  
President and Director

We are confident that through these investments, we are 
building a sustainable competitive advantage in our core 
petroleum refining business. 

Our Business Plan
Looking ahead, we will continue to execute on our growth 
plan to create significant value for stockholders over the 
next three years. Through this plan, we expect to achieve 
$700 million in additional annual EBITDA. We will reach 
this EBITDA target by achieving what we believe to be 
very attainable goals, including:

•   Running our refineries at the top quartile in operational 

availability, a measure of reliability; 

•   Creating sustainable growth in gross margin and free 
cash flow through opportunity capital investment and 
commercial optimization; 

•   Working within a cost structure that is in line with or 

and process safety management teams, upgrading safety 
systems and enhancing maintenance programs. In 2015, 
our employee recordable injury rate decreased by 20% 
and our process safety Tier 1 incident rate decreased by 
26% over the previous year.

We are thankful for our 2,700 dedicated employees  
who are truly the backbone of our success and who will 
enable us to continue to maintain safe, responsible and 
reliable operations. 

Looking Ahead
We are excited about the opportunities in front of  
HollyFrontier. We look forward to creating value day  
by day, investing in our future growth and positioning  
the company for long-term success.

Thank you for your investment in HollyFrontier. 

better than relevant peers; 

Sincerely, 

•   Improving the use of our balance sheet and our syner-
gistic relationship with our MLP affiliate Holly Energy 
Partners (HEP) to create value through capital structure; 
and we anticipate that additional asset dropdowns from 
HFC to HEP will be a value driver for both companies.

Continued Commitment to our Core Values
As we noted, 2015 was a year of transition, including our 
December announcement that George Damiris would be 
taking the reins as the Company’s Chief Executive Officer. 
George has been a key member of our leadership team 
since joining the company in 2007 and has 35 years of 
industry experience. George and the entire management 
team are committed to executing our strategic plan and 
maintaining the core values that underpin everything we do. 

Chief among these values is the health and safety of our 
employees, contractors and communities. A key part of our 
reliability initiatives is continually increasing safety perfor-
mance. To achieve that goal we are employing occupational 

George J. Damiris 
Chief Executive Officer, President and Director

and

Michael C. Jennings
Executive Chairman 

3

FINANCIAL HIGHLIGHTS

YEAR ENDED DECEMBER 31  

  2014 

2015

Sales and other revenues  

Income before income taxes  

Net income attributable to HFC stockholders  

Net income per common share attributable  
to HFC stockholders – diluted

Cash flows from operating activities  

Cash flows used for capital expenditures 

Total assets  

HFC stockholders’ equity 

Sales of refined products – barrels per day (“BPD”)  

Refinery production – BPD 

Employees 

$  19,764,327,000  

$  13,237,920,000

$ 

$ 

$ 

$ 

$ 

467,500,000  

$ 

1,208,568,000

281,292,000  

1.42  

758,596,000  

564,821,000  

$ 

$ 

$ 

$ 

740,101,000

3.90 

979,626,000

676,155,000

$  9,230,047,000  

$  8,388,299,000

$  5,523,584,000  

$  5,253,415,000

461,640  

425,010  

2,686  

488,350

446,560

2,704

7
2
7

,
1

3
2
0
,
1

6
3
7

0
4
7

1
8
2

1
8
2

3
6
6

,
1

8
3
3

,
1

0
8
9

9
6
8

9
5
7

1
9
0
0
2

,

1
6
1
,
0
2

4
6
7
9
1

,

0
4
4

,

5
1

8
3
2

,

3
1

11       12       13       14       15

11       12       13       14       15

11       12       13       14       15

Net Income Attributable  
to HFC Stockholders

$ in millions

3
4
4

5
2
4

4
1
4

7
4
4

2
3
3

Cash Flows from  
Operating Activities

$ in millions

3
5
0
6

,

0
0
0
6

,

4
0
2

,

5

4
2
5

,

5

3
5
2

,

5

Revenues

$ in millions

7
2
3
0
1

,

6
5
0
0
1

,

4
7
5

,

9

0
3
2

,

9

8
8
3
8

,

11       12       13       14       15

11       12       13       14       15

11       12       13       14       15

Refinery Production

BPD in thousands

HFC Stockholders’ Equity

$ in millions

Total Assets

$ in millions

4 

HollyFrontier Corporation 2015 Annual Report

 
 
 
 
 
 
 
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

_________________________________________________________________
FORM 10-K
_________________________________________________________________

(Mark One)

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2015 
OR

For the transition period from    __________   to   ____________         

Commission File Number 1-3876
 _________________________________________________________________

HOLLYFRONTIER CORPORATION
(Exact name of registrant as specified in its charter)
_________________________________________________________________

Delaware
(State or other jurisdiction of
incorporation or organization)

2828 N. Harwood, Suite 1300
Dallas, Texas
(Address of principal executive offices)

75-1056913
(I.R.S. Employer Identification No.)

75201-1507
(Zip Code)

(214) 871-3555
Registrant’s telephone number, including area code
_________________________________________________________________
Securities registered pursuant to Section 12(b) of the Act:
Common Stock, $0.01 par value registered on the New York Stock Exchange.

Securities registered pursuant to 12(g) of the Act:
None.
_________________________________________________________________

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.                                           Yes  

    No  

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 (d) of the Act.                                      Yes  

    No  

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934 during 
the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for 
the past 90 days.                                                                                                                                                                                                           Yes  

    No  

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be 
submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant 
was required to submit and post such files).                                                                                                                                                                 Yes  

    No  

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not 
be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any 
amendment to this Form 10-K.                                                                                                                                                                                                                                                        

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the 
definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer

Accelerated filer

Non-accelerated filer

Smaller reporting company

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).                                               Yes  

    No  

On June 30, 2015, the last business day of the registrant's most recently completed second fiscal quarter, the aggregate market value of the Common Stock, par 
value $0.01 per share, held by non-affiliates of the registrant was approximately $7.4 billion, based upon the closing price on the New York Stock Exchange on 
such date. (This is not deemed an admission that any person whose shares were not included in the computation of the amount set forth in the preceding sentence 
necessarily is an “affiliate” of the registrant.)

176,518,605 shares of Common Stock, par value $.01 per share, were outstanding on February 19, 2016.

DOCUMENTS INCORPORATED BY REFERENCE
Portions of the registrant's proxy statement for its annual meeting of stockholders to be held on May 11, 2016, which proxy statement will be filed with the Securities 
and Exchange Commission within 120 days after December 31, 2015, are incorporated by reference in Part III.

Table of Content

Item

TABLE OF CONTENTS

Forward-Looking Statements

Definitions

1 and 2.   Business and properties

1A.          Risk Factors

1B.          Unresolved staff comments

3.             Legal proceedings

4.             Mine safety disclosures

PART I

PART II

5.             Market for Registrant's common equity, related stockholder matters and issuer                           

purchases of equity securities

6.             Selected financial data

7.             Management's discussion and analysis of financial condition and results of operations

7A.          Quantitative and qualitative disclosures about market risk

Reconciliations to amounts reported under generally accepted accounting principles

8.             Financial statements and supplementary data

9.             Changes in and disagreements with accountants on accounting and financial disclosure

9A.          Controls and procedures

9B.          Other information

PART III

10.           Directors, executive officers and corporate governance

11.           Executive compensation
12.           Security ownership of certain beneficial owners and management and related                        

stockholder matters

13.           Certain relationships and related transactions, and director independence

14.           Principal accounting fees and services

15.           Exhibits, financial statement schedules

PART IV

Signatures

Index to exhibits

2

Page

3

4

6

22

32

32

33

34

35

36

49

49

53

98

98

98

98

98

98

99

99

99

100

101

Table of Content

FORWARD-LOOKING STATEMENTS

PART I

This Annual Report on Form 
contains certain “forward-looking statements” within the meaning of the federal securities 
laws. All statements, other than statements of historical fact included in this Form 10-K, including, but not limited to, those under 
“Business  and  Properties”  in  Items  1  and  2,  “Risk  Factors”  in  Item  1A,  “Legal  Proceedings”  in  Item  3  and  “Management's 
Discussion and Analysis of Financial Condition and Results of Operations” in Item 7, are forward-looking statements. Forward-
looking statements use words such as “anticipate,” “project,” “expect,” “plan,” “goal,” “forecast,” “intend,” “should,” “would,” 
“could,” “believe,” “may,” and similar expressions and statements regarding our plans and objectives for future operations. These 
statements are based on management's beliefs and assumptions using currently available information and expectations as of the 
date hereof, are not guarantees of future performance and involve certain risks and uncertainties. All statements concerning our 
expectations for future results of operations are based on forecasts for our existing operations and do not include the potential 
impact of any future acquisitions. Although we believe that the expectations reflected in these forward-looking statements are 
reasonable, we cannot assure you that our expectations will prove to be correct. Therefore, actual outcomes and results could 
materially differ from what is expressed, implied or forecast in these statements. Any differences could be caused by a number of 
factors including, but not limited to:

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

risks and uncertainties with respect to the actions of actual or potential competitive suppliers of refined petroleum products 
in our markets;
the demand for and supply of crude oil and refined products;

the spread between market prices for refined products and market prices for crude oil;

the possibility of constraints on the transportation of refined products;

the possibility of inefficiencies, curtailments or shutdowns in refinery operations or pipelines;

effects of governmental and environmental regulations and policies;

the availability and cost of our financing;

the effectiveness of our capital investments and marketing strategies;

our efficiency in carrying out construction projects;

our ability to acquire refined product operations or pipeline and terminal operations on acceptable terms and to integrate 
any existing or future acquired operations;

the possibility of terrorist attacks and the consequences of any such attacks;

general economic conditions; and

other financial, operational and legal risks and uncertainties detailed from time to time in our Securities and Exchange 
Commission filings.

Cautionary statements identifying important factors that could cause actual results to differ materially from our expectations are 
set forth in this Form 10-K, including without limitation the forward-looking statements that are referred to above. When considering 
forward-looking statements, you should keep in mind the risk factors and other cautionary statements set forth in this Form 10-K 
under “Risk Factors” in Item 1A and in conjunction with the discussion in this Form 10-K in “Management's Discussion and 
Analysis of Financial Condition and Results of Operations” under the heading “Liquidity and Capital Resources.” All forward-
looking statements included in this Form 10-K and all subsequent written or oral forward-looking statements attributable to us or 
persons acting on our behalf are expressly qualified in their entirety by these cautionary statements. The forward-looking statements 
speak only as of the date made and, other than as required by law, we undertake no obligation to publicly update or revise any 
forward-looking statements, whether as a result of new information, future events or otherwise.

3

Table of Content

DEFINITIONS

Within this report, the following terms have these specific meanings:

“Alkylation” means the reaction of propylene or butylene (olefins) with isobutane to form an iso-paraffinic gasoline (inverse 

of cracking).

“Aromatic oil” is long chain oil that is highly aromatic in nature and is used to manufacture tires and industrial rubber 

products and in the production of specialty asphalt.

“BPD” means the number of barrels per calendar day of crude oil or petroleum products.

“BPSD” means the number of barrels per stream day (barrels of capacity in a 24 hour period) of crude oil or petroleum 

products.

“Biodiesel” means an alternative fuel produced from renewable biological resources.

“Black wax crude oil” is a low sulfur, low gravity crude oil produced in the Uintah Basin in Eastern Utah that has certain 

characteristics that require specific facilities to transport, store and refine into transportation fuels. 

“Catalytic reforming” means a refinery process which uses a precious metal (such as platinum) based catalyst to convert 
low octane naphtha to high octane gasoline blendstock and hydrogen. The hydrogen produced from the reforming process is used 
to desulfurize other refinery oils and is a primary source of hydrogen for the refinery.

“Cracking” means the process of breaking down larger, heavier and more complex hydrocarbon molecules into simpler 

and lighter molecules.

“Crude oil distillation” means the process of distilling vapor from liquid crudes, usually by heating, and condensing the 

vapor slightly above atmospheric pressure turning it back to liquid in order to purify, fractionate or form the desired products.

“Ethanol” means a high octane gasoline blend stock that is used to make various grades of gasoline.

“FCC,” or fluid catalytic cracking, means a refinery process that breaks down large complex hydrocarbon molecules into 

smaller more useful ones using a circulating bed of catalyst at relatively high temperatures.

“Hydrodesulfurization” means to remove sulfur and nitrogen compounds from oil or gas in the presence of hydrogen and 

a catalyst at relatively high temperatures.

“Hydrogen plant” means a refinery unit that converts natural gas and steam to high purity hydrogen, which is then used in 

the hydrodesulfurization, hydrocracking and isomerization processes.

“HF alkylation” or hydrofluoric alkylation, means a refinery process which combines isobutane and C3/C4 olefins using 

HF acid as a catalyst to make high octane gasoline blend stock.

“Isomerization” means a refinery process for rearranging the structure of C5/C6 molecules without changing their size or 

chemical composition and is used to improve the octane of C5/C6 gasoline blendstocks.

“LPG” means liquid petroleum gases.

“Lubricant” or “lube” means a solvent neutral paraffinic product used in commercial heavy duty engine oils, passenger 
car oils and specialty products for industrial applications such as heat transfer, metalworking, rubber and other general process 
oil.

“MSAT2”  means  Control  of  Hazardous Air  Pollutants  from  Mobile  Sources,  a  rule  issued  by  the  U.S.  Environmental 

Protection Agency to reduce hazardous emissions from motor vehicles and motor vehicle fuels.

“MEK” means a lube process that separates waxy oil from non-waxy oils using methyl ethyl ketone as a solvent.

“MMBTU” means one million British thermal units.

4

 
 
 
 
Table of Content

“Natural gasoline” means a low octane gasoline blend stock that is purchased and used to blend with other high octane 

stocks produced to make various grades of gasoline.

“Paraffinic oil” is a high paraffinic, high gravity oil produced by extracting aromatic oils and waxes from gas oil and is 

used in producing high-grade lubricating oils.

“Refinery gross margin” means the difference between average net sales price and average product costs per produced 

barrel of refined products sold. This does not include the associated depreciation and amortization costs.

“Reforming” means the process of converting gasoline type molecules into aromatic, higher octane gasoline blend stocks 

while producing hydrogen in the process.

“Roofing flux” is produced from the bottom cut of crude oil and is the base oil used to make roofing shingles for the housing 

industry.

“ROSE,”  or  “Solvent  deasphalter  /  residuum  oil  supercritical  extraction,”  means  a  refinery  unit  that  uses  a  light 
hydrocarbon  like  propane  or  butane  to  extract  non-asphaltene  heavy  oils  from  asphalt  or  atmospheric  reduced  crude. These 
deasphalted oils are then further converted to gasoline and diesel in the FCC process. The remaining asphaltenes are either sold, 
blended to fuel oil or blended with other asphalt as a hardener.

“Scanfiner” is a refinery unit that removes sulfur from gasoline to produce low sulfur gasoline blendstock.

“Sour crude oil” means crude oil containing quantities of sulfur greater than 0.4 percent by weight, while “sweet crude 

oil” means crude oil containing quantities of sulfur equal to or less than 0.4 percent by weight.

“Vacuum distillation” means the process of distilling vapor from liquid crudes, usually by heating, and condensing the 

vapor below atmospheric pressure turning it back to a liquid in order to purify, fractionate or form the desired products.

“WTI” means West Texas Intermediate and is a grade of crude oil used as a common benchmark in oil pricing. WTI is a 

sweet crude oil and has a relatively low density.

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Table of Content

Items 1 and 2. Business and Properties

COMPANY OVERVIEW

References  herein  to  HollyFrontier  Corporation  (“HollyFrontier”)  include  HollyFrontier  and  its  consolidated  subsidiaries.  In 
accordance with the Securities and Exchange Commission's (“SEC”) “Plain English” guidelines, this Annual Report on Form 10-
K has been written in the first person. In this document, the words “we,” “our,” “ours” and “us” refer only to 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.

We merged with Frontier Oil Corporation (“Frontier”) on July 1, 2011. Concurrent with the merger, we changed our name from 
Holly Corporation (“Holly”) to HollyFrontier and changed the ticker symbol for our common stock traded on the New York Stock 
Exchange to “HFC.” Accordingly, this document includes Frontier, its consolidated subsidiaries and the operations of the merged 
Frontier businesses effective July 1, 2011, but not prior to this date.

We are principally an independent petroleum refiner that produces high-value refined products such as gasoline, diesel fuel, jet 
fuel, specialty lubricant products, and specialty and modified asphalt. We were incorporated in Delaware in 1947 and maintain 
our principal corporate offices at 2828 N. Harwood, Suite 1300, Dallas, Texas 75201-1507. Our telephone number is 214-871-3555 
and our internet website address is www.hollyfrontier.com. The information contained on our website does not constitute part of 
this Annual Report on Form 10-K. A print copy of this Annual Report on Form 10-K will be provided without charge upon written 
request to the Vice President, Investor Relations at the above address. A direct link to our SEC filings is available on our website 
under the Investor Relations tab. Also available on our website are copies of our Corporate Governance Guidelines, Audit Committee 
Charter,  Compensation  Committee  Charter,  Nominating  /  Corporate  Governance  Committee  Charter,  Environmental,  Health, 
Safety, and Public Policy Committee Charter and Code of Business Conduct and Ethics, all of which will be provided without 
charge upon written request to the Vice President, Investor Relations at the above address. Our Code of Business Conduct and 
Ethics applies to all of our officers, employees and directors, including our principal executive officer, principal financial officer 
and principal accounting officer. Our common stock is traded on the New York Stock Exchange under the trading symbol “HFC.”

On February 21, 2011, we entered into a merger agreement providing for a “merger of equals” business combination between us 
and Frontier. On July 1, 2011, North Acquisition, Inc., a direct wholly-owned subsidiary of Holly, merged with and into Frontier, 
with Frontier surviving as a wholly-owned subsidiary of Holly. Subsequent to the merger and following approval by HollyFrontier's 
post-closing  board  of  directors,  Frontier  merged  with  and  into  HollyFrontier,  and  HollyFrontier  continued  as  the  surviving 
corporation. This merger combined the legacy Frontier refinery operations consisting of refineries in El Dorado, Kansas (the “El 
Dorado  Refinery”)  and  Cheyenne,  Wyoming  (the  “Cheyenne  Refinery”)  with  Holly’s  legacy  refinery  operations  to  form 
HollyFrontier. The aggregate equity consideration paid in connection with the merger was $3.7 billion.

As of December 31, 2015, we:

• 

• 

• 

owned and operated the El Dorado Refinery, two refinery facilities located in Tulsa, Oklahoma (collectively, the "Tulsa 
Refineries"), a refinery in Artesia, New Mexico that is operated in conjunction with crude oil distillation and vacuum 
distillation and other facilities situated 65 miles away in Lovington, New Mexico (collectively, the “Navajo Refinery”), 
the Cheyenne Refinery and a refinery in Woods Cross, Utah (the “Woods Cross Refinery”);

owned and operated HollyFrontier Asphalt Company (“HFC Asphalt”), formerly known as NK Asphalt Partners, which 
operates various asphalt terminals in Arizona, New Mexico and Oklahoma;

owned a 39% interest in HEP, which includes our 2% general partner interest.

HEP is a consolidated variable interest entity (“VIE”) as defined under U.S. generally accepted accounting principles (“GAAP”). 
Information on HEP's assets and acquisitions completed between 2011 and 2016 can be found under the “Holly Energy Partners, 
L.P.” section provided later in this discussion of Items 1 and 2, “Business and Properties.” 

Our  operations  are  currently  organized  into  two  reportable  segments,  Refining  and  HEP. The  Refining  segment  includes  the 
operations of our El Dorado, Tulsa, Navajo, Cheyenne and Woods Cross Refineries and HFC Asphalt. The HEP segment involves 
all of the operations of HEP. See Note 19 “Segment Information” in the Notes to Consolidated Financial Statements for additional 
information on our reportable segments.

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Table of Content

REFINERY OPERATIONS 

Our refinery operations serve the Mid-Continent, Southwest and Rocky Mountain regions of the United States. We own and operate 
five complex refineries having a combined crude oil processing capacity of 443,000 barrels per stream day. Each of our refineries 
has the complexity to convert discounted, heavy and sour crude oils into a high percentage of gasoline, diesel and other high-value 
refined  products.  For  2015,  gasoline,  diesel  fuel,  jet  fuel  and  specialty  lubricants  (excluding  volumes  purchased  for  resale) 
represented 52%, 35%, 4% and 3%, respectively, of our total refinery sales volumes.

The tables presented below and elsewhere in this discussion of our refinery operations set forth information, including non-GAAP 
performance measures, about our 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  and  depreciation  and  amortization. 
Reconciliations to amounts reported under GAAP are provided under “Reconciliations to Amounts Reported Under Generally 
Accepted Accounting Principles” following Item 7A of Part II of this Form 10-K. 

Consolidated
Crude charge (BPD) (1)
Refinery throughput (BPD) (2)
Refinery production (BPD) (3)
Sales of produced refined products (BPD)
Sales of refined products (BPD) (4)
Refinery utilization (5)

Average per produced barrel (6)

Net sales
Cost of products (7)
Refinery gross margin (8)
Refinery operating expenses (9)
Net operating margin (8)

Refinery operating expenses per throughput barrel (10)

Feedstocks:

Sweet crude oil
Sour crude oil
Heavy sour crude oil
Black wax crude oil
Other feedstocks and blends
Total

2015

Years Ended December 31,
2014

2013

432,560
463,580
446,560
438,000
488,350

406,180
436,400
425,010
420,990
461,640

387,520
424,780
413,820
410,730
446,390

97.6%

91.7%

87.5%

$

$

$

71.32
55.25
16.07
5.71
10.36

5.39

$

$

$

51%
25%
15%
2%
7%
100%

110.19
96.21
13.98
6.38
7.60

6.16

$

$

$

53%
23%
15%
2%
7%
100%

115.60
99.61
15.99
6.15
9.84

5.95

52%
21%
17%
2%
8%
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)  Refinery production represents the barrels per day of refined products yielded from processing crude and other refinery 

feedstocks through the crude units and other conversion units at our refineries.

(4)  Includes refined products purchased for resale.
(5)  Represents crude charge divided by total crude capacity (BPSD). Our consolidated crude capacity is 443,000 BPSD.
(6)  Represents average per barrel amount for produced refined products 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 7A of Part II of this Form 10-K.

(7)  Transportation, terminal and refinery storage costs billed from HEP are included in cost of products.
(8)  Excludes lower of cost or market inventory valuation adjustment of $227.0 million and $397.5 million for the years ended 

December 31, 2015 and 2014, respectively.

(9)  Represents operating expenses of our refineries, exclusive of depreciation and amortization and pension settlement costs.
(10) Represents refinery operating expenses, exclusive of depreciation and amortization and pension settlement costs, divided 

by refinery throughput.

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Table of Content

Principal Products and Customers
Set forth below is information regarding our principal products.

Consolidated
Sales of produced refined products:

Gasolines
Diesel fuels
Jet fuels
Fuel oil
Asphalt
Lubricants
LPG and other
Total

2015

Years Ended December 31,
2014

2013

52%
35%
4%
1%
2%
3%
3%
100%

50%
34%
4%
2%
3%
2%
5%
100%

50%
33%
5%
2%
3%
2%
5%
100%

Light products are shipped to customers via product pipelines or are available for loading at our refinery truck facilities and 
terminals. Light products are also made available to customers at various other locations via exchange with other parties.

Our principal customers for gasoline include other refiners, convenience store chains, independent marketers and retailers. Diesel 
fuel is sold to other refiners, truck stop chains, wholesalers and railroads. Jet fuel is sold for commercial airline use. Specialty 
lubricant products are sold in both commercial and specialty markets. LPG's are sold to LPG wholesalers and LPG retailers. We 
produce and purchase asphalt products that are sold to governmental entities, paving contractors or manufacturers. Asphalt is also 
blended into fuel oil and is either sold locally or is shipped to the Gulf Coast. See Note 21 “Significant Customers” in the Notes 
to Consolidated Financial Statements for additional information on our significant customers.

Mid-Continent Region (El Dorado and Tulsa Refineries)

Facilities
The El Dorado Refinery is a high-complexity coking refinery with a 135,000 barrels per stream day processing capacity and the 
ability to process significant volumes of heavy and sour crudes. The integrated refining processes at the Tulsa West and East 
refinery facilities provide us with a highly complex refining operation having a combined crude processing rate of approximately 
125,000 barrels per stream day. For 2015, gasoline, diesel fuel, jet fuel and specialty lubricants (excluding volumes purchased for 
resale) represented 50%, 33%, 7% and 4%, respectively, of our Mid-Continent sales volumes. 

The following table sets forth information about our Mid-Continent region operations, including non-GAAP performance measures.  

Mid-Continent Region (El Dorado and Tulsa Refineries)
Crude charge (BPD) (1)
Refinery throughput (BPD) (2)
Refinery production (BPD) (3)
Sales of produced refined products (BPD)
Sales of refined products (BPD) (4)
Refinery utilization (5)

Average per produced barrel (6)

Net sales
Cost of products (7)
Refinery gross margin (8)
Refinery operating expenses (9)
Net operating margin (8)

Refinery operating expenses per throughput barrel (10)

2015

Years Ended December 31,
2014

2013

263,340
277,260
266,170
258,420
295,470

243,240
255,020
249,350
245,600
273,630

234,930
257,030
251,470
247,030
269,790

101.3%

93.6%

90.4%

$

$

$

72.33
56.88
15.45
4.95
10.50

4.61

$

$

$

110.79
98.39
12.40
5.73
6.67

5.52

$

$

$

115.63
99.35
16.28
5.50
10.78

5.29

8

Table of Content

Mid-Continent Region (El Dorado and Tulsa Refineries)
Feedstocks:

Sweet crude oil
Sour crude oil
Heavy sour crude oil
Other feedstocks and blends
Total

2015

Years Ended December 31,
2014

2013

59%
21%
15%
5%
100%

71%
11%
14%
4%
100%

69%
6%
16%
9%
100%

Footnote references are provided under our Consolidated Refinery Operating Data table on page 7.

The El Dorado Refinery is located on 1,100 acres south of El Dorado, Kansas and is a fully integrated refinery. The principal 
processing units at the El Dorado Refinery consist of crude and vacuum distillation; hydrodesulfurization of naphtha, kerosene, 
diesel, and gas oil streams; isomerization; catalytic reforming; aromatics recovery; catalytic cracking; alkylation; delayed coking; 
hydrogen production; and sulfur recovery. Refining operations began at the site in 1917 and the operating units now present include 
both newly constructed units and older units that have been upgraded over the years.

The Tulsa West facility is located on a 750-acre site in Tulsa, Oklahoma situated along the Arkansas River. The principal processing 
units at the Tulsa West facility consist of crude and vacuum distillation (with light ends recovery), naphtha hydrodesulfurization, 
propane de-asphalting, lubes extraction, MEK dewaxing, delayed coker and butane splitter units. Most of the operating units at 
the facility currently in service were built in the late 1950s and early 1960s. The refinery was reconfigured to emphasize specialty 
lubricant production in the early 1990s.

The Tulsa East facility is located on a 466-acre site also in Tulsa, Oklahoma situated along the Arkansas River. The principal 
process units at the Tulsa East facility consist of crude and vacuum distillation, naphtha hydrodesulfurization, FCC, isomerization, 
catalytic reforming, alkylation, scanfiner, diesel hydrodesulfurization and sulfur units.

Markets and Competition
The primary markets for the El Dorado Refinery's refined products are Colorado and the Plains States, which include the Kansas 
City metropolitan area. The gasoline, diesel and jet fuel produced by the El Dorado Refinery are primarily shipped via pipeline 
to terminals for distribution by truck or rail. We ship product via the NuStar Pipeline Operating Partnership L.P. Pipeline to the 
northern Plains States, via the Magellan Pipeline Company, L.P. (“Magellan”) mountain pipeline to Denver, Colorado, and on the 
Magellan mid-continent pipeline to the Plains States. Additionally, HEP's on-site truck and rail racks facilitate access to local 
refined product markets.

The El Dorado Refinery faces competition from other Plains States and Mid-Continent refiners, but the principal competitors for 
the El Dorado Refinery are Gulf Coast refiners. Our Gulf Coast competitors typically have lower production costs due to greater 
economies of scale; however, they incur higher refined product transportation costs, which allows the El Dorado Refinery to 
compete effectively in the Plains States and Rocky Mountain region with Gulf Coast refineries.

The Tulsa Refineries serve the Mid-Continent region of the United States. Distillates and gasolines are primarily delivered from 
the Tulsa Refineries to market via pipelines owned and operated by Magellan. These pipelines connect the refinery to distribution 
channels throughout Colorado, Oklahoma, Kansas, Missouri, Illinois, Iowa, Minnesota, Nebraska and Arkansas. Additionally, 
HEP's on-site truck and rail racks facilitate access to local refined product markets. 

We have an offtake agreement through November 2019 with an affiliate of Sinclair whereby Sinclair purchases 45,000 to 50,000 
BPD of gasoline and distillate products at market prices from us to supply its branded and unbranded marketing network throughout 
the Midwest. Upon expiration, the offtake agreement can be renewed by Sinclair for an additional five-year term. For the year 
ended December 31, 2015, sales to Sinclair represented approximately 27% of the Tulsa Refineries' total sales and 8% of our total 
consolidated sales. 

The Tulsa Refineries' principal customers for conventional gasoline include Sinclair, other refiners, convenience store chains, 
independent marketers and retailers. Sinclair, truck stop operators and railroads are the primary diesel customers. Jet fuel is sold 
primarily  for  commercial  use. The  refinery's  asphalt  and  roofing  flux  products  are  sold  via  truck  or  railcar  directly  from  the 
refineries or to customers throughout the Mid-Continent region primarily to paving contractors and manufacturers of roofing 
products.

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Table of Content

For the year ended December 31, 2015, sales to Shell Oil represented approximately 11% of our Mid-Continent refineries' total 
sales and 9% of our total consolidated sales. We have a sales agreement with an affiliate of Shell Oil under which Shell Oil 
purchases gasoline and diesel production of the El Dorado Refinery and Tulsa Refineries at market prices through October 2017 
primarily to support its branded marketing network.

Our Tulsa West facility also produces specialty lubricant products sold in both commercial and specialty markets throughout North 
America and to customers with operations in Central America and South America. The specialty lubricant products are high-value 
products that provide a significantly higher margin contribution to the refinery. Base oil customers include blender-compounders 
who  prepare  the  various  finished  lubricant  and  grease  products  sold  to  end  users. Agricultural  products  are  formulated  as 
supplemental carriers for herbicides and as Environmental Protection Agency (“EPA”) registered pesticide oils, are sold to product 
formulators. Process oil customers include rubber and chemical industry customers. Specialty waxes are sold primarily to packaging 
customers as coating material for paper and cardboard, and to non-packaging customers in the construction materials, adhesive 
and candle-making markets. Our production represents approximately 5% of paraffinic oil capacity and 14% of wax production 
capacity in the United States market and is one of four refineries of specialty aromatic oils in North America.

Principal Products
Set forth below is information regarding the principal products produced at our El Dorado and Tulsa Refineries:

Mid-Continent Region (El Dorado and Tulsa Refineries)
Sales of produced refined products:

Gasolines
Diesel fuels
Jet fuels
Fuel oil
Asphalt
Lubricants
LPG and other
Total

Years Ended December 31,
2014

2013

2015

50%
33%
7%
1%
2%
4%
3%
100%

47%
33%
7%
1%
3%
4%
5%
100%

47%
31%
8%
1%
3%
4%
6%
100%

Crude Oil and Feedstock Supplies
Both of our Mid-Continent Refineries are connected via pipeline to Cushing, Oklahoma, a significant crude oil pipeline trading 
and storage hub. The El Dorado Refinery and the Tulsa Refineries are located approximately 125 miles and 50 miles, respectively, 
from Cushing, Oklahoma. Local pipelines provide direct access to regional Oklahoma crude production as well as access to United 
States onshore and Canadian crudes. The proximity of the refineries to the Cushing pipeline and storage hub provides the flexibility 
to optimize their crude slate with a wide variety of crude oil supply options. Additionally, we have transportation service agreements 
to transport Canadian crude oil on the Spearhead and Keystone Pipelines, enabling us to transport Canadian crude oil to Cushing 
for subsequent shipment to either of our Mid-Continent Refineries. 

We also purchase isobutane, natural gasoline, butane and other feedstocks for processing at our Mid-Continent Refineries. The El 
Dorado Refinery is connected to Conway, Kansas, a major gas liquids trading and storage hub, via the Oneok Pipeline. From time 
to time, other feedstocks such gas oil, naphtha and light cycle oil are purchased from other refiners for use at our refineries.  

Southwest Region (Navajo Refinery)

Facilities
The Navajo Refinery has a crude oil processing capacity of 100,000 barrels per stream day and has the ability to process sour 
crude oils into high-value light products such as gasoline, diesel fuel and jet fuel. For 2015, gasoline and diesel fuel (excluding 
volumes purchased for resale) represented 55% and 39%, respectively, of our Southwest sales volumes.

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Table of Content

The following table sets forth information about our Southwest region operations, including non-GAAP performance measures.

Southwest Region (Navajo Refinery)
Crude charge (BPD) (1)
Refinery throughput (BPD) (2)
Refinery production (BPD) (3)
Sales of produced refined products (BPD)
Sales of refined products (BPD) (4)
Refinery utilization (5)

Average per produced barrel (6)

Net sales
Cost of products (7)
Refinery gross margin (8)
Refinery operating expenses (9)
Net operating margin (8)

Refinery operating expenses per throughput barrel (10)

Feedstocks:

Sweet crude oil
Sour crude oil
Heavy sour crude oil
Other feedstocks and blends
Total

2015

Years Ended December 31,
2014

2013

100,450
111,840
110,210
111,580
119,560

98,120
110,250
107,520
106,870
115,620

87,910
97,310
94,490
94,830
104,320

100.5%

98.1%

87.9%

$

$

$

69.76
53.57
16.19
4.92
11.27

4.91

$

$

$

36%
54%
—%
10%
100%

110.54
94.58
15.96
5.43
10.53

5.26

$

$

$

13%
74%
2%
11%
100%

117.79
103.88
13.91
6.04
7.87

5.89

8%
72%
11%
9%
100%

Footnote references are provided under our Consolidated Refinery Operating Data table on page 7.

The Navajo Refinery's Artesia, New Mexico facility is located on a 561-acre site and is a fully integrated refinery with crude 
distillation, vacuum distillation, FCC, ROSE (solvent deasphalter), HF alkylation, catalytic reforming, hydrodesulfurization, mild 
hydrocracking, isomerization, sulfur recovery and product blending units. The operating units at the Artesia facility include newly 
constructed units, older units that have been relocated from other facilities and upgraded and re-erected in Artesia, and units that 
have been operating as part of the Artesia facility (with periodic major maintenance) for many years, in some very limited cases 
since before 1970.

The Artesia facility is operated in conjunction with a refining facility located in Lovington, New Mexico, approximately 65 miles 
east of Artesia. The principal equipment at the Lovington facility consists of a crude distillation unit and associated vacuum 
distillation units that were constructed after 1970. The Lovington facility processes crude oil into intermediate products that are 
transported to Artesia by means of three intermediate pipelines owned by HEP. These products are then upgraded into finished 
products at the Artesia facility. The combined crude oil capacity of the Navajo Refinery facilities is 100,000 BPSD and it typically 
processes or blends an additional 10,000 BPSD of natural gasoline, butane, gas oil and naphtha.

Markets and Competition 
The Navajo Refinery primarily serves the southwestern United States market, including the metropolitan areas of El Paso, Texas; 
Albuquerque, Moriarty and Bloomfield, New Mexico; Phoenix and Tucson, Arizona; and portions of northern Mexico. Our products 
are shipped through HEP's pipelines from Artesia, New Mexico to El Paso, Texas and from El Paso to Albuquerque and to Mexico 
via products pipeline systems owned by Magellan and from El Paso to Tucson and Phoenix via a products pipeline system owned 
by Kinder Morgan's subsidiary, SFPP, L.P. (“SFPP”). In addition, petroleum products from the Navajo Refinery are transported 
to markets in northwest New Mexico, to Moriarty, New Mexico, near Albuquerque, via HEP's pipelines running from Artesia to 
San Juan County, New Mexico, and to Bloomfield, New Mexico. We have refined product storage through our pipelines and 
terminals agreement with HEP at terminals in El Paso, Texas; Tucson, Arizona; and Artesia and Moriarty, New Mexico.

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Table of Content

El Paso Market
The El Paso market for refined products is currently supplied by a number of area and Gulf Coast refiners and pipelines. Area 
refiners include Navajo, WRB Refining, LLC (“WRB”) (a joint venture between Phillips 66 and Cenovus Energy), Valero, Alon 
USA, Inc. (“Alon”) and Western Refining. Pipelines serving this market are owned by Magellan, NuStar Energy L.P. and HEP. 
Refined products from the Gulf Coast are transported via Magellan pipelines.

Arizona Market
The Arizona market for refined products is currently supplied by a number of refiners via pipelines and trucks. Refiners include 
companies located in west Texas, eastern New Mexico, northern New Mexico, the Gulf Coast and the West Coast. Magellan's 
pipeline systems deliver refined products from the Texas Gulf Coast to El Paso and, through interconnections with third-party 
common carrier pipelines, into the Arizona market.

New Mexico Markets
The Artesia, Albuquerque, Moriarty and Bloomfield markets are supplied by a number of refiners via pipelines and trucks. Refiners 
include Navajo, Valero, Western Refining, Alon and WRB. 

We use a common carrier pipeline out of El Paso to serve the Albuquerque market. In addition, HEP leases from Mid-America 
Pipeline Company, L.L.C., a pipeline between White Lakes, New Mexico and the Albuquerque vicinity and Bloomfield, New 
Mexico. The lease agreement currently runs through 2017, and HEP has options to renew for two additional ten-year periods. HEP 
owns and operates a 12-inch pipeline from the Navajo Refinery to the leased pipeline as well as terminalling facilities in Moriarty, 
which is 40 miles east of Albuquerque. This facility permits us to ship light products to the Albuquerque and Santa Fe, New Mexico 
areas. In addition, we serve southern Colorado and northern Arizona primarily out of a terminal in Bloomfield, New Mexico, 
which is owned by Western Refining.

Principal Products
Set forth below is information regarding the principal products produced at our Navajo Refinery:

Southwest Region (Navajo Refinery)
Sales of produced refined products:

Gasolines
Diesel fuels
Fuel oil
Asphalt
LPG and other
Total

Years Ended December 31,
2014

2013

2015

55%
39%
2%
1%
3%
100%

54%
38%
4%
1%
3%
100%

51%
39%
6%
1%
3%
100%

Crude Oil and Feedstock Supplies
The Navajo Refinery is situated near the Permian Basin, an area that has historically, and continues to have, abundant supplies of 
crude oil available both for regional users and for export to other areas. We purchase crude oil from independent producers in 
southeastern New Mexico and west Texas as well as from major oil companies. The crude oil is gathered through HEP's pipelines 
and through third-party tank trucks and crude oil pipeline systems for delivery to the Navajo Refinery.

We also purchase volumes of isobutane, natural gasoline and other feedstocks to supply the Navajo Refinery from sources in Texas 
and the Mid-Continent area that are delivered to our region on a common carrier pipeline owned by Enterprise Products, L.P. 
Ultimately all volumes of these products are shipped to the Artesia refining facilities on HEP's intermediate pipelines running 
from Lovington to Artesia. From time to time, we purchase gas oil, naphtha and light cycle oil from other refiners for use as 
feedstock.

Rocky Mountain Region (Cheyenne and Woods Cross Refineries)

Facilities
The Cheyenne and the Woods Cross Refineries have crude oil processing capacities of 52,000 and 31,000 barrels per stream day, 
respectively. The Cheyenne Refinery processes heavy Canadian crudes as well as local sweet crudes such as that produced from 
the Bakken shale and similar resources. The Woods Cross Refinery processes regional sweet and black wax crude as well as 
Canadian sour crude oils into high-value light products. For 2015, gasoline and diesel fuel (excluding volumes purchased for 
resale) represented 57% and 36%, respectively, of our Rocky Mountain sales volumes. 

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Table of Content

The  following  table  sets  forth  information  about  our  Rocky  Mountain  region  operations,  including  non-GAAP  performance 
measures.

Rocky Mountain Region (Cheyenne and Woods Cross Refineries)
Crude charge (BPD) (1)
Refinery throughput (BPD) (2)
Refinery production (BPD) (3)
Sales of produced refined products (BPD)
Sales of refined products (BPD) (4)
Refinery utilization (5)

Average per produced barrel (6)

Net sales
Cost of products (7)
Refinery gross margin (8)
Refinery operating expenses (9)
Net operating margin (8)

Refinery operating expenses per throughput barrel (10)

Feedstocks:

Sweet crude oil
Sour crude oil
Heavy sour crude oil
Black wax crude oil
Other feedstocks and blends
Total

2015

Years Ended December 31,
2014

2013

68,770
74,480
70,180
68,000
73,320

64,820
71,130
68,140
68,520
72,390

64,680
70,440
67,860
68,870
72,280

82.9%

78.1%

77.9%

$

$

$

70.05
51.80
18.25
9.89
8.36

9.03

$

$

$

42%
—%
37%
13%
8%
100%

107.51
90.95
16.56
10.20
6.36

9.83

$

$

$

44%
2%
30%
15%
9%
100%

112.49
94.63
17.86
8.65
9.21

8.46

43%
1%
34%
14%
8%
100%

Footnote references are provided under our Consolidated Refinery Operating Data table on page 7.

The Cheyenne Refinery facility is located on a 255-acre site and is a fully integrated refinery with crude distillation, vacuum 
distillation, coking, FCC, HF alkylation, catalytic reforming, hydrodesulfurization of naphtha and distillates, butane isomerization, 
hydrogen production, sulfur recovery and product blending units. The operating units at the Cheyenne Refinery include both newly 
constructed units and older units that have been upgraded over the years.

The Woods Cross Refinery facility is located on a 200-acre site and is a fully integrated refinery with crude distillation, solvent 
deasphalter, FCC, HF alkylation, catalytic reforming, hydrodesulfurization, isomerization, sulfur recovery and product blending 
units. The operating units at the Woods Cross Refinery include newly constructed units, older units that have been relocated from 
other facilities, upgraded and re-erected in Woods Cross, and units that have been operating as part of the Woods Cross facility 
(with periodic major maintenance) for many years, in some very limited cases since before 1950. The facility typically processes 
or blends an additional 2,000 BPSD of natural gasoline, butane and gas oil over its 31,000 BPSD capacity. 

We own and operate 4 miles of hydrogen pipeline that connects the Woods Cross Refinery to a hydrogen plant located on the 
property of Chevron's Salt Lake City Refinery. Additionally, HEP owns and operates 12 miles of crude oil and refined products 
pipelines that allows us to connect our Woods Cross Refinery to common carrier pipeline systems.

Construction continues on our existing expansion project to increase planned processing capacity to 45,000 BPSD and includes 
new refining facilities and a new rail loading rack for intermediates and finished products associated with refining waxy crude 
oil. This initial phase of the project is expected to cost $420.0 million and is planned to be put into operation during the first quarter 
of 2016. An additional investment of $20.0 million is being made to allow for greater crude slate flexibility, which we believe will 
increase capacity utilization and improve overall economic returns during periods when wax crudes are in short supply. Further 
discussion of this project can be found in “Management's Discussion and Analysis of Financial Condition and Results of Operations” 
under Liquidity and Capital Resources.

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We have signed a 10-year, 20,000 BPD crude oil supply agreement with Newfield Exploration Company. This agreement will 
supply black and yellow wax crude oil produced in the nearby Uinta Basin to the Woods Cross Refinery. Upon completion of the 
expansion, the Woods Cross Refinery's capacity to process waxy crude is expected to double to approximately 24,000 BPD. 

Markets and Competition 
The Cheyenne Refinery primarily markets its products in eastern Colorado, including metropolitan Denver, eastern Wyoming and 
western Nebraska. Because of the location of the Cheyenne Refinery, we are able to sell a significant portion of its diesel directly 
from the truck rack at the refinery, therefore, eliminating transportation costs. The Cheyenne Refinery ships refined products via 
the Magellan pipeline serving Denver and Colorado Springs, Colorado. 

Denver Market
The most competitive market for the Cheyenne Refinery is the Denver metropolitan area. Three other refineries supply the Denver 
market: Wyoming refineries near Rawlins and in Casper owned by Sinclair and a refinery in Denver owned by Suncor. Five product 
pipelines also supply Denver, including three from outside the region.

Utah Market
The Woods Cross Refinery's primary market is Utah, which is currently supplied by a number of local refiners and the Pioneer 
Pipeline. In addition to our Woods Cross Refinery, local area refiners include Chevron, Tesoro, Big West and Silver Eagle. Other 
refiners that ship into the Woods Cross market via the Pioneer Pipeline include Sinclair, ExxonMobil, CHS and Phillips 66. We 
estimate the four local refineries that compete with our Woods Cross Refinery have a combined capacity to process approximately 
150,000 BPD of crude oil. The five Utah refineries collectively supply an estimated 70% of the gasoline and distillate products 
consumed in the states of Utah and Idaho, with the remainder imported from refineries in Wyoming and Montana via the Pioneer 
Pipeline owned jointly by Sinclair and Phillips 66. Approximately 40% - 45% of the gasoline and diesel fuel produced by our 
Woods Cross Refinery is sold through a network of Phillips 66 branded marketers under a long-term supply agreement.

Idaho, Wyoming, Eastern Washington and Nevada Markets
We supply a small percentage of the refined products consumed in the combined Idaho, Wyoming, eastern Washington and Nevada 
markets. Our Woods Cross Refinery ships refined products over a common carrier pipeline system owned by Tesoro Logistics 
Northwest Pipelines LLC (“Tesoro Logistics”) to numerous terminals, including HEP's terminal at Spokane, Washington and to 
terminals  at  Pocatello  and  Boise,  Idaho  and  Pasco, Washington  that  are  owned  by Tesoro  Logistics. We  sell  to  branded  and 
unbranded customers in these markets. In 2012, we began shipping refined products to Cedar City, Utah and Las Vegas, Nevada 
via the UNEV Pipeline. The majority of the Las Vegas, Nevada market for refined products is supplied by various West Coast 
refiners and suppliers via Kinder Morgan's CalNev common carrier pipeline system.

Principal Products
Set forth below is information regarding the principal products produced at our Cheyenne and Woods Cross Refineries:

Rocky Mountain Region (Cheyenne and Woods Cross Refineries)
Sales of produced refined products:

Gasolines
Diesel fuels
Jet fuels
Fuel oil
Asphalt
LPG and other
Total

Years Ended December 31,
2014

2013

2015

57%
36%
—%
3%
2%
2%
100%

56%
33%
—%
1%
5%
5%
100%

56%
30%
1%
1%
5%
7%
100%

Crude Oil and Feedstock Supplies
Crude oil is transported to the Cheyenne Refinery from suppliers in Canada, Colorado, Nebraska, North Dakota and Montana via 
common carrier pipelines owned by Spectra, Plains and Suncor Energy, as well as by truck. The Woods Cross Refinery currently 
obtains crude oil from suppliers in Canada, Wyoming, Utah and Colorado as delivered via common carrier pipelines that originate 
in Canada, Wyoming and Colorado. We also receive crude oil via the SLC Pipeline, a joint venture common carrier pipeline in 
which HEP owns a 25% interest. Supplies of black wax crude oil are shipped via truck. 

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HollyFrontier Asphalt Company

We  manufacture  commodity  and  modified  asphalt  products  at  our  manufacturing  facilities  located  in  Glendale,  Arizona; 
Albuquerque, New Mexico; Artesia, New Mexico and Catoosa, Oklahoma. Our Albuquerque and Artesia facilities manufacture 
modified hot asphalt products and commodity emulsions from base asphalt materials provided by our refineries and third-party 
suppliers. Our Glendale facility manufactures modified hot asphalt products from base asphalt materials provided by our refineries 
and third-party suppliers. Our Catoosa facility manufactures specialty modified asphalt and commodity asphalt products. We 
market these asphalt products in Arizona, New Mexico, Oklahoma, Kansas, Missouri, Texas and northern Mexico. Our products 
are shipped via third-party trucking companies to commercial customers that provide asphalt based materials for commercial and 
government projects. 

HOLLY ENERGY PARTNERS, L.P. 

HEP is a Delaware limited partnership that trades on the New York Stock Exchange under the trading symbol “HEP.” HEP owns 
and operates logistic assets consisting of petroleum product and crude oil pipelines, terminals, tankage, loading rack facilities and 
refinery processing units that principally support our refining and marketing operations in the Mid-Continent, Southwest and 
Rocky Mountain regions of the United States and Alon's refinery in Big Spring, Texas. Additionally, HEP owns a 75% interest in 
UNEV Pipeline, LLC (“UNEV”), the owner of a pipeline running from Woods Cross, Utah to Las Vegas, Nevada (the “UNEV 
Pipeline”) and associated product terminals, a 50% interest in Frontier Pipeline Company, the owner of a pipeline running from 
Wyoming to Frontier Station, Utah (the “Frontier Pipeline”), and a 25% interest in SLC Pipeline, LLC, the owner of a pipeline 
(the “SLC Pipeline”) that serves refineries in the Salt Lake City, Utah area.

HEP generates revenues by charging tariffs for transporting petroleum products and crude oil through its pipelines, by leasing 
certain pipeline capacity to Alon,  by charging fees for terminalling and storing refined  products and other hydrocarbons  and 
providing other services at its storage tanks, terminals and refinery processing units. HEP does not take ownership of products 
that it transports, terminals, stores or refines; therefore, it is not directly exposed to changes in commodity prices.

HEP's recent acquisitions (2011 through present) are summarized below:

Magellan Asset Exchange
On February 22, 2016, we obtained a 50% membership interest in Osage Pipe Line Company, LLC (“Osage”) in a non-monetary 
exchange  for  a  20-year  terminalling  services  agreement,  whereby,  a  subsidiary  of  Magellan  Midstream  Partners  (“Magellan 
Midstream”) will provide terminalling services for all of our products originating in Artesia, New Mexico that require terminalling 
in or through El Paso, Texas. Osage is the owner of the Osage pipeline, a 135-mile pipeline that transports crude oil from Cushing, 
Oklahoma to our El Dorado Refinery in Kansas and also has a connection to the Jayhawk pipeline that services the CHS refinery 
in McPherson, Kansas. The Osage pipeline is the primary pipeline that supplies our El Dorado Refinery with crude oil.

Concurrent with this transaction, we entered into a nonmonetary exchange with HEP; whereby, we received HEP’s El Paso terminal 
in exchange for our interest in Osage. Under this exchange, HEP also agreed to build two connections on its south products pipeline 
system that will permit us access to Magellan Midstream’s El Paso terminal. Effective upon the closing of this exchange, HEP is 
the named operator of the Osage pipeline and is working to transition into that role. 

El Dorado Asset Transaction
On November 1, 2015, HEP acquired from us newly constructed naphtha fractionation and hydrogen generation units at our El 
Dorado Refinery for cash consideration of $62.0 million. In connection with this transaction, we entered into 15-year tolling 
agreements containing minimum quarterly throughput commitments that provide minimum annualized payments to HEP of $15.3 
million.

Frontier Pipeline Interest Transaction
On August 31, 2015, HEP purchased a 50% interest in Frontier Pipeline Company, owner of the Frontier Pipeline, from an affiliate 
of Enbridge, Inc. for $55.0 million. Frontier Pipeline will continue to be operated by an affiliate of Plains All American Pipeline, 
L.P. (“Plains”), which owns the remaining 50% interest. The 289-mile crude oil pipeline runs from Casper, Wyoming to Frontier 
Station, Utah and has a 72,000 BPD capacity. The Frontier Pipeline supplies Canadian and Rocky Mountain crudes to Salt Lake 
City area refiners through a connection to the SLC Pipeline. 

Crude Tank Farm Asset Transaction
On March 6, 2015, HEP purchased an existing crude tank farm adjacent to our El Dorado Refinery from an unrelated third-party 
for $27.5 million in cash. We are the main customer of this crude tank farm.

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Table of Content

UNEV Interest Transaction
On July 12, 2012, HEP acquired from us our 75% interest in UNEV. We received consideration consisting of $260.0 million in 
cash and 1.0 million HEP common units. UNEV owns the UNEV Pipeline, a 12-inch refined products pipeline running from Salt 
Lake City, Utah to Las Vegas, Nevada together with terminal facilities in Cedar City, Utah and North Las Vegas.

Legacy Frontier Pipeline and Tankage Asset Transaction
On November 9, 2011, HEP acquired from us certain tankage, loading rack and crude receiving assets located at our El Dorado 
and Cheyenne Refineries. We received non-cash consideration consisting of promissory notes with an aggregate principal amount 
of $150.0 million and 3.8 million HEP common units. 

Transportation Agreements

Agreements with HEP
HEP serves our refineries under long-term pipeline, terminal, tankage and refinery processing unit throughput agreements expiring 
in 2019 through 2030. Under these agreements, we pay HEP fees to transport, store and process throughput volumes of refined 
products, crude oil and feedstocks on HEP's pipelines, terminals, tankage, loading rack facilities and refinery processing units that 
result in minimum annual payments to HEP, including UNEV (a consolidated subsidiary of HEP). Under these agreements, the 
agreed upon tariff rates are subject to annual tariff rate adjustments on July 1 at a rate based upon the percentage change in Producer 
Price  Index  (“PPI”)  or  Federal  Energy  Regulatory  Commission  index. As  of  December 31,  2015,  these  agreements  result  in 
minimum annualized payments to HEP of $244.9 million.

Our transactions with HEP including the transactions discussed above and fees paid under our transportation agreements with 
HEP and UNEV are eliminated and have no impact on our consolidated financial statements. 

Agreement with Alon
HEP has a 15-year pipelines and terminals agreement with Alon expiring in 2020, under which Alon has agreed to transport on 
HEP's pipelines and throughput through its terminals, volumes of refined products that results in a minimum level of annual 
revenue. The agreed upon tariff rates are increased or decreased annually at a rate equal to the percentage change in PPI, but will 
not decrease below the initial tariff rate. Also, HEP has a capacity lease agreement with Alon under which Alon leases space on 
HEP's Orla to El Paso pipeline for the shipment of up to 15,000 barrels of refined product per day. The terms under this agreement 
expire in 2018 through 2022.

As of December 31, 2015, HEP's assets include:

Pipelines
• 

approximately 810 miles of refined product pipelines, including 340 miles of leased pipelines, that transport gasoline, 
diesel and jet fuel principally from our Navajo Refinery in New Mexico to our customers in the metropolitan and rural 
areas of Texas, New Mexico, Arizona, Colorado, Utah and northern Mexico;
approximately 510 miles of refined product pipelines that transport refined products from Alon's Big Spring refinery in 
Texas to its customers in Texas and Oklahoma;
two 65-mile pipelines that transport intermediate feedstocks and crude oil from our Navajo Refinery crude oil distillation 
and vacuum facilities in Lovington, New Mexico to our petroleum refinery facilities in Artesia, New Mexico; 
one 65-mile intermediate pipeline that is used for the shipment of crude oil from the gathering systems in Barnsdall and 
Beeson, New Mexico to our Navajo Refinery.
approximately 940 miles of crude oil trunk, gathering and connection pipelines located in west Texas, New Mexico and 
Oklahoma that primarily deliver crude oil to our Navajo Refinery; 
approximately 8 miles of refined product pipelines that support our Woods Cross Refinery located near Salt Lake City, 
Utah; 
gasoline and diesel connecting pipelines that support our Tulsa East facility; 
five intermediate product and gas pipelines between our Tulsa East and Tulsa West facilities;
crude receiving assets located at our Cheyenne Refinery;
a 75% interest in the UNEV Pipeline, a 427-mile, 12-inch refined products pipeline running from Woods Cross, Utah to 
Las Vegas, Nevada;
a 50% interest in Frontier Pipeline, a 289-mile crude oil pipeline running from Casper, Wyoming to Frontier Station, Utah 
through a connection to the SLC Pipeline; and
a 25% interest in the SLC Pipeline, a 95-mile intrastate crude oil pipeline system that transports crude oil into the Salt 
Lake City, Utah area from the Utah terminus of the Frontier Pipeline, as well as crude oil flowing from Wyoming and 
Utah via Plains Rocky Mountain Pipeline.

• 

• 

• 

• 

• 

• 
• 
• 
• 

• 

• 

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Refined Product Terminals and Refinery Tankage 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

four refined product terminals located in El Paso, Texas; Moriarty and Bloomfield, New Mexico; and Tucson, Arizona, 
with an aggregate capacity of approximately 1,200,000 barrels, that are integrated with HEP's refined product pipeline 
system that serves our Navajo Refinery;
one refined product terminal located in Spokane, Washington, with a capacity of approximately 400,000 barrels, that serves 
third-party common carrier pipelines;
one refined product terminal near Mountain Home, Idaho, with a capacity of 120,000 barrels, that serves a nearby United 
States Air Force Base;
two refined product terminals, located in Wichita Falls and Abilene, Texas, and one tank farm in Orla, Texas with aggregate 
capacity of approximately 500,000 barrels, that are integrated with HEP's refined product pipelines that serve Alon's Big 
Spring, Texas refinery;
a refined product loading rack facility at each of our El Dorado, Tulsa, Navajo, Cheyenne and Woods Cross Refineries, 
heavy product / asphalt loading rack facilities at our Tulsa East facility, Navajo Refinery Lovington facility and Cheyenne 
Refinery, LPG loading rack facilities at our El Dorado Refinery, Tulsa West facility and Cheyenne Refinery, lube oil 
loading racks at our Tulsa West facility and crude oil Leased Automatic Custody Transfer units located at our Cheyenne 
Refinery;
on-site crude oil tankage at our Tulsa, El Dorado, Navajo, Cheyenne and Woods Cross Refineries having an aggregate 
storage capacity of approximately 1,350,000 barrels;
on-site refined and intermediate product tankage at our El Dorado, Tulsa and Cheyenne Refineries having an aggregate 
storage capacity of approximately 8,800,000 barrels;
eleven crude oil tanks adjacent to our El Dorado Refinery with a capacity of approximately 1,200,000 barrels that primarily 
serve our El Dorado Refinery;
a 75% interest in UNEV Pipeline's product terminals near Cedar City, Utah and Las Vegas, Nevada with an aggregate 
capacity of approximately 615,000 barrels; and
a 50% interest in Frontier Pipeline's tankage with an aggregate capacity of approximately 72,000 barrels.

Refinery Processing Units

• 

• 

a newly completed naphtha fractionation tower at our El Dorado Refinery, with a capacity of 50,000 BPD of desulfurized 
naphtha; and
a newly completed hydrogen generation unit at our El Dorado Refinery, with a capacity of 6.1 million standard cubic feet 
per day of natural gas.

ADDITIONAL OPERATIONS AND OTHER INFORMATION

Corporate Offices
We lease approximately 60,000 square feet for our principal corporate offices in Dallas, Texas. The lease for our principal corporate 
offices  expires  in  2021.  Functions  performed  in  the  Dallas  office  include  overall  corporate  management,  refinery  and  HEP 
management, planning and strategy, corporate finance, crude acquisition, logistics, contract administration, marketing, investor 
relations, governmental affairs, accounting, tax, treasury, information technology, legal and human resources support functions. 

Employees and Labor Relations
As of December 31, 2015, we had 2,704 employees, of which 908 are currently covered by collective bargaining agreements 
having various expiration dates between 2016 and 2019. We consider our employee relations to be good.

Environmental Regulation
Refinery and pipeline operations are subject to numerous federal, state and local laws regulating the discharge of substances into 
the environment or otherwise relating to the protection of the environment. Permits or other authorizations are required under 
these laws for the operation of our refineries, pipelines and related facilities, and these permits and authorizations are subject to 
revocation, modification and renewal. Over the years, there have been ongoing communications, including notices of violations, 
about environmental matters between us and federal and state authorities, some of which have resulted or will result in changes 
to operating procedures and in capital expenditures. Compliance with applicable environmental laws, regulations and permits will 
continue to have an impact on our operations, the results of our operations, and our capital requirements.

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Failure to comply with these laws and regulations may result in the assessment of sanctions, including administrative, civil and 
criminal  penalties;  the  imposition  of  investigatory,  remedial  or  corrective  action  obligations  or  the  incurrence  of  capital 
expenditures; the occurrence of delays in the permitting, development or expansion of projects, and the issuance of injunctive 
relief limiting or prohibiting certain operations. The following is a description of the principal environmental laws applicable to 
our operations.

Clean Air Act - Our operations and many of the products we manufacture are subject to certain requirements of the Federal Clean 
Air Act (“CAA”) as well as related state and local laws and regulations. Certain CAA regulatory programs applicable to our 
refineries require capital expenditures for the installation of certain air pollution control devices. Additionally, the EPA has the 
authority under the CAA to modify the formulation of the refined transportation fuel products we manufacture in order to limit 
the emissions associated with their final use. In addition, in October 2015, the EPA lowered the National Ambient Air Quality 
Standard  (“NAAQS”)  for  ozone  from  75  to  70  parts  per  billion  for  both  the  8-hour  primary  and  secondary  standards.  State 
implementation of the revised NAAQS could result in stricter permitting requirements, delay or prohibit our ability to obtain such 
permits, and result in increased expenditures for pollution control equipment, the costs of which could be significant. Also, in 
December 2015, the EPA issued a final rule, effective February 2016, that amends three refinery standards already in effect, 
imposing additional or, in some cases, new emission control requirements on subject refineries. The final rule requires, among 
other things, benzene monitoring at the refinery fence line and submittal of fence line monitoring data to the EPA on a quarterly 
basis; upgraded storage tank controls requirements, including new applicability thresholds; enhanced performance requirements 
for flares, continuous monitoring  of flares and pressure release devices and analysis and remedy of flare release events; and 
compliance with emissions standards for delayed coking units. Refineries have up to three years from the effective date of the 
final rule to come into compliance with certain requirements of the rule, such as the performance requirements for flares, while 
other aspects of the rule require compliance to be achieved at a sooner date. In February 2016, the EPA proposed to give refineries 
an additional 18 months to comply with a small subset of the rules. These new rules, as well as subsequent rulemaking under the 
CAA or similar laws, or new agency interpretations of existing laws and regulations, may necessitate additional expenditures in 
future years and result in increased costs on our operations.

Fuel Quality Regulation - Also, we are subject to the EPA's Control of Hazardous Air Pollutants from Mobile Sources (“MSAT2”) 
regulations that impose reductions in the benzene content of our produced gasoline. Our refineries currently purchase a portion 
of their benzene credits to meet these requirements. If economically justified or otherwise determined to be beneficial, we could 
implement additional benzene reduction projects to eliminate the need to purchase benzene credits. 

The Energy Policy Act of 2005 and the Energy Independence and Security Act of 2007 (“EISA”) prescribe certain percentages of 
renewable fuels (e.g., ethanol and biofuels) that, where required, must be blended into our produced gasoline and diesel. The 
Renewable Fuel Standard 2 (“RFS2”) regulations, finalized by the EPA in 2010 to implement the EISA, requires that most refiners 
blend increasing amounts of biofuels with refined products through 2022. Because the EISA requires specified volumes of biofuels, 
if the demand for motor fuels decreases in future years, even higher percentages of biofuels may be required. Alternatively, credits 
called Renewable Identification Numbers (“RINs”) can be used instead of physically blending biofuels. The price of RINS has 
been subject to extreme volatility over the years and costs to purchase RINs can be significant. 

On November 30, 2015, the EPA issued final multi-year volume mandates under the RFS2 for 2014 to 2016. While these volume 
mandates are generally lower than the statutory mandates, they represent a slight increase over the volumes initially proposed by 
the EPA for this three-year period and such volume mandates could be increased in the future. It is possible we could find ourselves 
unable to blend sufficient quantities of ethanol and biodiesel to meet our requirements and would, therefore, have to purchase an 
increasing number of RINs. It is not possible at this time to predict with certainty what those volumes or costs may be, but given 
the potential increase in volumes and the volatile price of RINs, increases in renewable volume requirements could have an adverse 
impact on our results of operations.

Additional changes in fuel standards with respect to sulfur content of gasoline, called Tier 3 standards, to reduce vehicle emissions 
were  finalized  in  2014.  These  new  requirements,  other  requirements  of  the  CAA,  and  other  presently  existing  or  future 
environmental regulations may cause us to make substantial capital expenditures and purchase credits at significant cost to enable 
our refineries to produce products that meet applicable requirements.

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Climate Change - In recent years, various legislative and regulatory measures to address climate change and greenhouse gas 
(“GHG”) emissions (including carbon dioxide, methane and nitrous oxides) have been discussed or implemented. They include 
proposed and enacted federal regulation and state actions to develop statewide, regional or nationwide programs designed to 
control and reduce GHG emissions from fixed sources, such as our refineries, as well as power plants, mobile transportation 
sources and fuels. Although it is not possible to predict the requirements of any GHG legislation that may be enacted, any laws 
or regulations that may be adopted to restrict or reduce GHG emissions will likely require us to incur increased operating and 
capital costs. In August 2015, the EPA finalized the “Clean Power Plan” requiring states to reduce carbon dioxide emissions from 
coal fired power plants that will likely result in a combination of plant closures, switching to renewable energy and natural gas, 
and demand reduction. In February 2016, the U.S. Supreme Court stayed implementation of the rule pending judicial challenges 
to the rule. At this time, we cannot predict the outcome of this litigation. In any event, this rule would not directly affect our 
operations, but it could result in increased power costs for our refineries in future years. In addition, the EPA has indicated that it 
intends to regulate refinery GHG emissions from new and existing sources through a New Source Performance Standard, although 
there is no firm proposal or date for such regulation and the EPA has said that such a performance standard is not imminent.

EPA rules require us to report GHG emissions from our refinery operations and consumer use of fuel products produced at our 
refineries on an annual basis. While the cost of compliance with the reporting rule is not material, data gathered under the rule 
may be used in the future to support additional regulation of GHG. Moreover, the EPA directly regulates GHG emissions from 
refineries and other major sources through the Prevention of Significant Deterioration (“PSD”) and Federal Operating Permit 
(“Title V”) programs. In June 2014, the United States Supreme Court ruled that the EPA may not require PSD and Title V permits 
solely because of GHG emissions, but may require Best Available Control Technology (“BACT”) for GHG emissions above a 
certain threshold if emissions of other pollutants would otherwise require PSD permitting. While this decision does not impose 
any limits or controls on GHG emissions from current operations, GHG emission increases from future projects or operational 
changes, such as capacity increases, may be impacted and required to meet emission limits or technological requirements pertaining 
to GHG emissions, such as BACT. Severe limitations on GHG emissions could also adversely affect demand for the gasoline that 
we produce. Finally, it should be noted that some scientists have concluded that increasing concentrations of GHGs in the Earth’s 
atmosphere may produce climate changes that have significant physical effects, such as increased frequency and severity of storms, 
floods and other climatic events; if any such effects were to occur, they could have an adverse effect on our operations.

Water Discharges - Our operations are also subject to the Federal Clean Water Act (“CWA”), the Federal Safe Drinking Water 
Act (“SDWA”) and comparable state and local requirements. The CWA, the SDWA and analogous laws prohibit any discharge 
into  surface  waters,  ground  waters,  injection  wells  and  publicly-owned  treatment  works  except  in  conformance  with  legal 
authorization, such as pre-treatment permits and National Pollutant Discharge Elimination System (“NPDES”) permits, issued by 
federal, state and local governmental agencies. NPDES permits and analogous water discharge permits are valid for a maximum 
of five years and must be renewed. In September 2015, new EPA and U.S. Army Corps of Engineers (“Corps”) rules defining the 
scope of the EPA’s and the Corps’ jurisdiction became effective. To the extent the rule expands the scope of the CWA’s jurisdiction, 
we could face increased costs and delays with respect to obtaining permits for dredge and fill activities in wetland areas. The rule 
has been challenged in court on the grounds that it unlawfully expands the reach of CWA programs, and implementation of the 
rule has been stayed pending resolution of the court challenge. Also, pursuant to the CWA and its implementing regulations, we 
may be required to obtain and maintain approvals or permits for the discharge of wastewater or storm water and are required to 
develop and implement spill prevention, control and countermeasure plans, also referred to as “SPCC plans,” in connection with 

storage of significant quantities of oil.

Hazardous Substances and Wastes - We generate wastes that may be subject to the Resource Conservation and Recovery Act and 
comparable state and local requirements. The EPA and various state agencies have limited the approved methods of disposal for 
certain hazardous and non-hazardous wastes. The EPA is currently working on several rulemakings that could impact how our 
refineries manage various waste streams. While these rulemakings are still in development, it does not appear that these rules will 
significantly impact our refineries.

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The Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”), also known as “Superfund,” imposes 
liability, without regard to fault or the legality of the original conduct, on certain classes of persons, including the current and past 
owner or operator of the disposal site or sites from which there is a release of a “hazardous substance,” as well as persons that 
disposed of or arranged for the disposal or treatment of the hazardous substances at the site or sites. Under CERCLA, such persons 
may be subject to joint and several liability for such costs as the cost of cleaning up the hazardous substances that have been 
released into the environment and for damages to natural resources. In the course of our historical operations, as well as in our 
current normal operations, we have generated waste, some of which falls within the statutory definition of a “hazardous substance” 
and some of which may have been disposed of at sites that may be subject to cleanup and cost recovery actions under CERCLA 
by a government entity or other third party. Similarly, locations now owned or operated by us, where third parties have disposed 
such hazardous substances in the past, may also be subject to cleanup and cost recovery actions under CERCLA. Under CERCLA, 
liable parties may seek contribution from other liable parties to share in the costs of cleanup. Some states have enacted laws similar 
to CERCLA which impose similar responsibilities and liabilities on responsible parties. It is also not uncommon for neighboring 
landowners and other third parties to file claims under state law for personal injury and property damage allegedly caused by 
hazardous substances or other pollutants released into the environment.  

Oil  Pollution Act  -  The  Oil  Pollution Act  of  1990  (“OPA”)  and  regulations  thereunder  impose  a  variety  of  requirements  on 
“responsible parties” related to the prevention of oil spills and liability for damages resulting from such spills in United States 
waters. A “responsible party” includes the owner or operator of an onshore facility. OPA assigns liability to each responsible party 
for oil cleanup costs and a variety of public and private damages. While liability limits apply in some circumstances, a party cannot 
take advantage of liability limits if the spill was caused by gross negligence or willful misconduct or resulted from violation of a 
federal safety, construction or operating regulation. If the party fails to report a spill or to cooperate fully in the cleanup, liability 
limits likewise do not apply. Few defenses exist to the liability imposed by OPA. OPA imposes ongoing requirements on a responsible 
party, including the preparation of oil spill response plans and proof of financial responsibility to cover environmental cleanup 
and restoration costs that could be incurred in connection with an oil spill.

As is the case with all companies engaged in industries similar to ours, we face potential exposure to future claims and lawsuits 
involving environmental matters. These matters include soil and water contamination, air pollution, personal injury and property 
damage  allegedly  caused  by  substances  that  we  manufactured,  handled,  used,  released  or  disposed  of.  We  currently  have 
environmental remediation projects that relate to recovery, treatment and monitoring activities resulting from past releases of 
refined product and crude oil into the environment. As of December 31, 2015, we had an accrual of $98.1 million related to such 
environmental liabilities.

We are and have been the subject of various state, federal and private proceedings and inquiries relating to compliance with 
environmental regulations and conditions, including those discussed above. Compliance with current and future environmental 
regulations is expected to require additional expenditures, including expenditures for investigation and remediation, which may 
be significant, at our refineries and at pipeline transportation facilities. To the extent that future expenditures for these purposes 
are material and can be reasonably determined, these costs are disclosed and accrued, if applicable.

Occupational Health and Safety - Our operations are also subject to various laws and regulations relating to occupational health 
and safety. We maintain a myriad of safety programs, safety-related maintenance programs, implement a regiment of training 
requirements and otherwise comply with a host of occupational safety and health standards and regulations as part of our ongoing 
efforts to ensure compliance with all applicable laws and regulations in this area. As part of our compliance efforts, we have 
established hazard communications programs pursuant to the Occupational Safety and Health Administration’s (“OSHA”) hazard 
communication standard, and state right-to-know standards where applicable, which require the communication of information 
regarding chemical hazards in the workplace associated with chemicals manufactured or handled in our facilities. EPA regulations 
under Title III of the Federal Superfund Amendment and Reauthorization Act and related federal or comparable state statutes also 
require  that  information  be  maintained  concerning  hazardous  materials  used  in  or  released  from  our  operations  and  that  this 
information be provided to state and local government authorities and citizens under certain circumstances. Our operations are 
also subject to OSHA Process Safety Management regulations, which are designed to prevent or minimize the consequences of 
catastrophic releases of toxic, reactive, flammable or explosive chemicals. The EPA has imposed substantially similar requirements 
under its Risk Management Plan regulations. Compliance with applicable state and federal occupational health and safety laws 
and regulations, as well as environmental regulations, has required, and continues to require, substantial expenditures.

Occupational health and environmental legislation, regulations and regulatory programs change frequently. We cannot predict 
what additional occupational health and environmental legislation or regulations will be enacted or become effective in the future 
or how existing or future laws or regulations will be administered or interpreted with respect to our operations. Compliance with 
more stringent laws or regulations or adverse changes in the interpretation of existing laws or regulations by government agencies 
could have an adverse effect on our financial position and the results of our operations and could require substantial expenditures 
for the installation and operation of systems and equipment that we do not currently possess.

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Insurance
Our operations are subject to hazards of operations, including fire, explosion and weather-related perils. We maintain various 
insurance coverages, including business interruption insurance, subject to certain deductibles. 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.

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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Item 1A.  Risk Factors

Investing in us involves a degree of risk, including the risks described below. Our operating results have been, and will continue 
to be, affected by a wide variety of risk factors, many of which are beyond our control, that could have adverse effects on profitability 
during any particular period. You should carefully consider the following risk factors together with all of the other information 
included in this Annual Report on Form 10-K, including the financial statements and related notes, when deciding to invest in us. 
Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial may also materially and 
adversely affect our business operations. If any of the following risks were to actually occur, our business, financial condition or 
results of operations could be materially and adversely affected. 

The headings provided in this Item 1A. are for convenience and reference purposes only and shall not affect or limit the extent or 
interpretation of the risk factors.

The prices of crude oil and refined products materially affect our profitability, and are dependent upon many factors that are 
beyond our control, including general market demand and economic conditions, seasonal and weather-related factors, regional 
and grade differentials and governmental regulations and policies. 

Among these factors is the demand for crude oil and refined products, which is largely driven by the conditions of local and 
worldwide  economies  as  well  as  by  weather  patterns  and  the  taxation  of  these  products  relative  to  other  energy  sources. 
Governmental regulations and policies, particularly in the areas of taxation, energy and the environment, also have a significant 
impact on our activities. Operating results can be affected by these industry factors, product and crude pipeline capacities, crude 
oil  differentials  (including  regional  and  grade  differentials),  changes  in  transportation  costs,  accidents  or  interruptions  in 
transportation, competition in the particular geographic areas that we serve, and factors that are specific to us, such as the success 
of particular marketing programs and the efficiency of our refinery operations. The demand for crude oil and refined products can 
also be reduced due to a local or national recession or other adverse economic condition that results in lower spending by businesses 
and consumers on gasoline and diesel fuel, higher gasoline prices due to higher crude oil prices, a shift by consumers to more 
fuel-efficient vehicles or alternative fuel vehicles (such as ethanol or wider adoption of gas/electric hybrid vehicles), or an increase 
in vehicle fuel economy, whether as a result of technological advances by manufacturers, legislation mandating or encouraging 
higher fuel economy or the use of alternative fuel. 

We do not produce crude oil and must purchase all our crude oil, the price of which fluctuates based upon worldwide and local 
market conditions. Our profitability depends largely on the spread between market prices for refined petroleum products and crude 
oil prices. This margin is continually changing and may fluctuate significantly from time to time. Crude oil and refined products 
are commodities whose price levels are determined by market forces beyond our control. For example, the reversal of certain 
existing pipelines or the construction of certain new pipelines transporting additional crude oil or refined products to markets that 
serve competing refineries could affect the market dynamic that has allowed us to take advantage of favorable pricing. Also, in 
December 2015, the U.S. Congress lifted the ban on the ability of producers to export domestic crude oil. This could potentially 
impact crack spreads and price differentials between domestic and foreign crude oils. A deterioration of crack spreads or price 
differentials between domestic and foreign crude oils could have a material adverse effect on our business, financial condition, 
results of operations and cash flows. 

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Additionally, due to the seasonality of refined products markets and refinery maintenance schedules, results of operations for any 
particular quarter of a fiscal year are not necessarily indicative of results for the full year and can vary year to year in the event of 
unseasonably cool weather in the summer months and / or unseasonably warm weather in the winter months in the markets in 
which we sell our petroleum products. In general, prices for refined products are influenced by the price of crude oil. Although 
an increase or decrease in the price for crude oil may result in a similar increase or decrease in prices for refined products, there 
may be a time lag in the realization of the similar increase or decrease in prices for refined products. The effect of changes in crude 
oil prices on operating results, therefore, depends in part on how quickly refined product prices adjust to reflect these changes. A 
substantial or prolonged increase in crude oil prices without a corresponding increase in refined product prices, a substantial or 
prolonged decrease in refined product prices without a corresponding decrease in crude oil prices, or a substantial or prolonged 
decrease in demand for refined products could have a significant negative effect on our earnings and cash flow. Also, crude oil 
supply contracts are generally short-term contracts with market-responsive pricing provisions. We purchase our refinery feedstocks 
weeks before manufacturing and selling the refined products. Price level changes during the period between purchasing feedstocks 
and selling the manufactured refined products from these feedstocks could have a significant effect on our financial condition and 
results of operations. Also, our crude oil and refined products inventories are valued at the lower of cost or market under the last-
in, first-out (“LIFO”) inventory valuation methodology. If the market value of our inventory were to decline to an amount less 
than our LIFO cost, we would record a write-down of inventory and a non-cash charge to cost of products sold even when there 
is no underlying economic impact at that point in time. For example, we recorded a non-cash increase to cost of products sold in 
the amounts of $227.0 million and $397.5 million for the years ended December 31, 2015 and 2014, respectively. Continued 
volatility in crude oil and refined products prices could result in additional lower of cost or market inventory charges in the future, 
or in reversals reducing cost of products sold in subsequent periods should prices recover.

A material decrease in the supply of crude oil or other raw materials available to our refineries could significantly reduce our 
production levels and negatively affect our operations. 

To maintain or increase production levels at our refineries, we must continually contract for crude oil supplies from third parties. 
A material decrease in crude oil production from the fields that supply our refineries, as a result of depressed commodity prices, 
lack of drilling activity, natural production declines or otherwise, could result in a decline in the volume of crude oil available to 
our refineries. In addition, any prolonged disruption of a significant pipeline that is used in supplying crude oil to our refineries 
or the potential operation of a new, converted or expanded crude oil pipeline that transports crude oil to other markets could result 
in a decline in the volume of crude oil available to our refineries. Such an event could result in an overall decline in volumes of 
refined products processed at our refineries and therefore a corresponding reduction in our cash flow. In addition, the future growth 
of our operations will depend in part upon whether we can contract for additional supplies of crude oil at a greater rate than the 
rate of natural decline in our currently connected supplies. If we are unable to secure additional crude oil supplies of sufficient 
quality or crude pipeline expansion to our refineries, we will be unable to take full advantage of current and future expansion of 
our refineries' production capacities. 

For certain raw materials and utilities used by our refineries, there are a limited number of suppliers and, in some cases, the supplies 
are specific to the particular geographic region in which a facility is located. It is also common in the refining industry for a facility 
to have a sole, dedicated source for its utilities, such as steam, electricity, water and gas. Having a sole or limited number of 
suppliers may limit our negotiating power, particularly in the case of rising raw material costs. Any new supply agreements we 
enter into may not have terms as favorable as those contained in our current supply agreements.

Additionally, there is growing concern over the reliability of water sources. The decreased availability or less favorable pricing 
for water as a result of population growth, drought or regulation could negatively impact our operations.

If our raw material, utility or water supplies were disrupted, our businesses may incur increased costs to procure alternative supplies 
or incur excessive downtime, which would have a direct negative impact on our operations.

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We may not be able to successfully execute our business strategies to grow our business. Further, if we are unable to complete 
capital projects at their expected costs or in a timely manner, if we are unsuccessful in integrating the operations of assets we 
acquire, or if the market conditions assumed in our project economics deteriorate, our financial condition, results of operations, 
or cash flows could be materially and adversely affected.  

One of the ways we may grow our business is through the construction of new refinery processing units (or the purchase and 
refurbishment of used units from another refinery) and the expansion of existing ones. Projects are generally initiated to increase 
the yields of higher-value products, increase the amount of lower cost crude oils that can be processed, increase refinery production 
capacity, meet new governmental requirements, or maintain the operations of our existing assets. Additionally, our growth strategy 
includes projects that permit access to new and/or more profitable markets. The construction process involves numerous regulatory, 
environmental, political, and legal uncertainties, most of which are not fully within our control, including: 

• 

• 
• 
• 
• 
• 

denial or delay in issuing requisite regulatory approvals and/or obtaining or renewing permits, licenses, registrations and 
other authorizations;
societal and political pressures and other forms of opposition;
compliance with or liability under environmental regulations;
unplanned increases in the cost of construction materials or labor;
disruptions in transportation of modular components and/or construction materials;
severe adverse weather conditions, natural disasters, or other events (such as equipment malfunctions, explosions, fires, 
spills) affecting our facilities, or those of vendors and suppliers;
shortages of sufficiently skilled labor, or labor disagreements resulting in unplanned work stoppages;

• 
•  market-related increases in a project's debt or equity financing costs; and/or
• 

nonperformance or force majeure by, or disputes with, vendors, suppliers, contractors, or sub-contractors involved with 
a project.

If we are unable to complete capital projects at their expected costs or in a timely manner our financial condition, results of 
operations, or cash flows could be materially and adversely affected. Delays in making required changes or upgrades to our facilities 
could subject us to fines or penalties as well as affect our ability to supply certain products we make. In addition, our revenues 
may not increase immediately upon the expenditure of funds on a particular project. For instance, if we build a new refinery 
processing unit, the construction will occur over an extended period of time and we will not receive any material increases in 
revenues until after completion of the project. Moreover, we may construct facilities to capture anticipated future growth in demand 
for refined products in a region in which such growth does not materialize. As a result, new capital investments may not achieve 
our expected investment return, which could adversely affect our financial condition or results of operations. 

Our forecasted internal rates of return are also based upon our projections of future market fundamentals which are not within our 
control, including changes in general economic conditions, available alternative supply and customer demand.

An additional component of our growth strategy is to selectively acquire complementary assets for our refining operations in order 
to increase earnings and cash flow. Our ability to do so will be dependent upon a number of factors, including our ability to identify 
attractive acquisition candidates, consummate acquisitions on favorable terms, successfully integrate acquired assets and obtain 
financing to fund acquisitions and to support our growth, and other factors beyond our control. Risks associated with acquisitions 
include those relating to: 

• 
• 

• 

• 

• 

• 
• 
• 

diversion of management time and attention from our existing business;
challenges in managing the increased scope, geographic diversity and complexity of operations and inefficiencies that 
may result therefrom;
difficulties in integrating the financial, technological and management standards, processes, procedures and controls of 
an acquired business with those of our existing operations;
liability for known or unknown environmental conditions or other contingent liabilities not covered by indemnification 
or insurance;
greater than anticipated expenditures required for compliance with environmental or other regulatory standards or for 
investments to improve operating results;
difficulties or delays in achieving anticipated operational improvements or benefits;
incurrence of additional indebtedness to finance acquisitions or capital expenditures relating to acquired assets; and
issuance of additional equity, which could result in further dilution of the ownership interest of existing stockholders.

Any acquisitions that we do consummate may have adverse effects on our business and operating results. 

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We may incur significant costs to comply with new or changing environmental, energy, health and safety laws and regulations, 
and face potential exposure for environmental matters. 

Refinery and pipeline operations are subject to federal, state and local laws regulating, among other things, the generation, storage, 
handling, use and transportation of petroleum and hazardous substances by pipeline, truck, rail and barge, the emission and discharge 
of materials into the environment, waste management, and characteristics and composition of gasoline and diesel fuels, and other 
matters otherwise relating to the protection of the environment. Permits or other authorizations are required under these laws for 
the operation of our refineries, pipelines and related operations, and these permits and authorizations are subject to revocation, 
modification and renewal or may require operational changes, which may involve significant costs. Furthermore, a violation of 
permit conditions or other legal or regulatory requirements could result in substantial fines, criminal sanctions, permit revocations, 
injunctions, and/or refinery shutdowns. In addition, major modifications of our operations due to changes in the law could require 
changes to our existing permits or expensive upgrades to our existing pollution control equipment, which could have a material 
adverse effect on our business, financial condition, or results of operations. For example, in October 2015, the EPA lowered the 
NAAQS for ozone from 75 to 70 parts per billion for both the 8-hour primary and secondary standards. State implementation of 
the revised NAAQS could result in stricter permitting requirements, delay or prohibit our ability to obtain such permits, and result 
in increased expenditures for pollution control equipment, the costs of which could be significant. Also, in December 2015, the 
EPA issued a final rule, effective February 2016, that amends three refinery standards already in effect, imposing additional or, in 
some  cases,  new  emission  control  requirements  on  subject  refineries.  The  final  rule  requires,  among  other  things,  benzene 
monitoring at the refinery fence line and submittal of  fence line monitoring data to the EPA on a quarterly basis; upgraded storage 
tank controls requirements, including new applicability thresholds; enhanced performance requirements for flares, continuous 
monitoring of flares and pressure release devices and analysis and remedy of flare release events; and compliance with emissions 
standards for delayed coking units. Over the years, there have been ongoing communications, including notices of violations, 
about environmental matters between us and federal and state authorities, some of which have resulted or will result in changes 
to operating procedures and in capital expenditures. Compliance with applicable environmental laws, regulations and permits will 
continue to have an impact on our operations, results of our operations and capital requirements. 

As is the case with all companies engaged in industries similar to ours, we face potential exposure to future claims and lawsuits 
involving environmental matters. The matters include, but are not limited to, soil, groundwater and waterway contamination, air 
pollution, personal injury and property damage allegedly caused by substances which we manufactured, handled, used, released 
or disposed. 

We are and have been the subject of various state, federal and private proceedings relating to environmental regulations, conditions 
and inquiries. Current and future environmental regulations are expected to require additional expenditures, including expenditures 
for investigation and remediation, which may be significant, at our facilities. To the extent that future expenditures for these 
purposes are material and can be reasonably determined, these costs are disclosed and accrued. 

Our operations are also subject to various laws and regulations relating to occupational health and safety. We maintain safety, 
training and maintenance programs as part of our ongoing efforts to ensure compliance with applicable laws and regulations. 
Compliance with applicable health and safety laws and regulations has required and continues to require substantial expenditures. 
Failure to appropriately manage occupational health and safety risks associated with our business could also adversely impact our 
employees, communities, stakeholders, reputation and results of operations.

The costs of environmental and safety regulations are already significant and compliance with more stringent laws or regulations 
or adverse changes in the interpretation of existing regulations by government agencies could have an adverse effect on the financial 
position and the results of our operations and could require substantial expenditures for the installation and operation of systems 
and equipment that we do not currently possess. 

From time to time, new federal energy policy legislation is enacted by the U.S. Congress. For example, in December 2007, the 
U.S. Congress passed the Energy Independence and Security Act, which, among other provisions, mandates annually increasing 
levels for the use of renewable fuels such as ethanol, commencing in 2008 and escalating for 15 years, as well as increasing energy 
efficiency goals, including higher fuel economy standards for motor vehicles, among other steps. These statutory mandates may 
have the impact over time of offsetting projected increases in the demand for refined petroleum products in certain markets, 
particularly gasoline. In the near term, the new renewable fuel standard presents ethanol production and logistics challenges for 
both the ethanol and refining industries and may require additional capital expenditures or expenses by us to accommodate increased 
ethanol use. Other legislative changes may similarly alter the expected demand and supply projections for refined petroleum 
products in ways that cannot be predicted.

For additional information on regulations and related liabilities or potential liabilities affecting our business, see “Regulation” 
under Items 1 and 2, “Business and Properties,” and Item 3, “Legal Proceedings.” 

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The adoption of climate change legislation by Congress could result in increased operating costs and reduced demand for the 
refined products we produce.

In December 2009, the EPA determined that emissions of carbon dioxide, methane and other greenhouse gas emissions, or “GHGs,” 
present  an  endangerment  to  public  health  and  the  environment  because  emissions  of  such  gases  are,  according  to  the  EPA, 
contributing to warming of the earth's atmosphere and other climatic changes. Based on these findings, the EPA has begun adopting 
and implementing regulations to restrict emissions of GHGs under existing provisions of the federal CAA. For example, the EPA 
adopted rules that require certain large stationary sources to obtain permits to authorize emissions of GHGs. The EPA has also 
adopted rules requiring the reporting of GHG emissions from specified large GHG emission sources in the United States, including 
petroleum refineries, on an annual basis. The EPA has also announced its intention to issue a New Source Performance Standard 
directly regulating GHG emissions from refineries, although recent statements from EPA Administrator McCarthy indicate that 
issuance of such Performance Standard is not imminent..

In addition, the U.S. Congress has from time to time considered adopting legislation to reduce emissions of GHGs and almost 
one-half of the states have already taken legal measures to reduce emissions of GHGs primarily through the planned development 
of GHG emission inventories and/or regional GHG cap and trade programs. These cap and trade programs generally work by 
requiring major sources of emissions, such as electric power plants, or major producers of fuels, such as refineries and gas processing 
plants, to acquire and on an annual basis surrender emission allowances. The number of allowances available for purchase is 
reduced over time in an effort to achieve the overall GHG emission reduction goal.

The adoption of legislation or regulatory programs to reduce emissions of GHGs could require us to incur increased operating 
costs, such as costs to purchase and operate emissions control systems, to acquire emissions allowances or comply with new 
regulatory or reporting requirements. Any such legislation or regulatory programs could also increase the cost of consuming, and 
thereby reduce demand for, the refined products that we produce. Consequently, legislation and regulatory programs to reduce 
emissions of GHGs could have an adverse effect on our business, financial condition and results of operations. 

In addition, some scientists have concluded that increasing concentrations of GHGs in the Earth's atmosphere may produce climate 
changes that have significant physical effects, such as increased frequency and severity of storms, droughts, floods and other 
climatic events. If any such events were to occur, they could have an adverse effect on our financial condition and results of 
operations. 

Our operations are subject to catastrophic losses, operational hazards and unforeseen interruptions for which we may not be 
adequately insured. 

Our operations are subject to catastrophic losses, operational hazards and unforeseen interruptions such as natural disasters, adverse 
weather, accidents, fires, explosions, hazardous materials releases, cyber-attacks, power failures, mechanical failures and other 
events beyond our control. These events could result in an injury, loss of life, property damage or destruction, as well as a curtailment 
or an interruption in our operations and may affect our ability to meet marketing commitments. 

We may not be able to maintain or obtain insurance of the type and amount we desire at reasonable rates and exclusions from 
coverage may limit our ability to recover the amount of the full loss in all situations. As a result of market conditions, premiums 
and deductibles for certain of our insurance policies could increase. In some instances, certain insurance could become unavailable 
or available only for reduced amounts of coverage. We are  not fully insured against all risks incident to our business and therefore, 
we self-insure certain risks. If any refinery were to experience an interruption in operations, earnings from the refinery could be 
materially adversely affected (to the extent not recoverable through insurance) because of lost production and repair costs.

The energy industry is highly capital intensive, and the entire or partial loss of individual facilities can result in significant costs 
to both industry companies, such as us, and their insurance carriers. In recent years, several large energy industry claims have 
resulted in significant increases in the level of premium costs and deductible periods for participants in the energy industry. As a 
result  of large  energy  industry  claims, insurance companies  that have historically participated in underwriting  energy-related 
facilities may discontinue that practice or demand significantly higher premiums or deductible periods to cover these facilities. If 
significant changes in the number or financial solvency of insurance underwriters for the energy industry occur, or if other adverse 
conditions over which we have no control prevail in the insurance market, we may be unable to obtain and maintain adequate 
insurance at reasonable cost. In addition, we cannot assure you that our insurers will renew our insurance coverage on acceptable 
terms, if at all, or that we will be able to arrange for adequate alternative coverage in the event of non-renewal. Further, our 
underwriters could have credit issues that affect their ability to pay claims. If a significant accident or event occurs that is self-
insured or not fully insured, it could have a material adverse effect on our business, financial condition and results of operations.

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The availability and cost of renewable identification numbers and other required credits could have an adverse effect on our 
financial condition and results of operations.

Pursuant to the 2007 Energy Independence and Security Act, the EPA promulgated the RFS2 regulations reflecting the increased 
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 RINs, in lieu of such 
blending. We currently purchase RINs for some fuel categories on the open market in order to comply with the quantity of renewable 
fuels we are required to blend under the RFS2. Recently, due in part to the nation's fuel supply approaching the “blend wall” (the 
10%  ethanol  limit  prescribed  by  most  automobile  warranties),  the  price  of  RINs  has  been  extremely  volatile  with  the  price 
dramatically increasing in recognition of the decrease in RINs availability. While we cannot predict the future prices of RINs, the 
costs to obtain the necessary number of RINs could be material. If we are unable to pass the costs of compliance with the RFS2 
on to our customers, if sufficient RINs are unavailable for purchase, if we have to pay a significantly higher price for RINs or if 
we are otherwise unable to meet the RFS2 mandates, our financial condition and results of operations could be adversely affected.

In addition, the RFS2 regulations are highly complex and evolving, requiring us to periodically update our compliance systems. The 
RFS2  regulations  require  the  EPA  to  determine and  publish  the  applicable annual  volume  and  percentage standards  for  each 
compliance year by November 30 for the forthcoming year, and such blending percentages could be higher or lower than amounts 
estimated and accrued for in our consolidated financial statements. The future cost of RINs is difficult to estimate until such time 
as the EPA finalizes the applicable standards for the forthcoming compliance year. We cannot predict with certainty our exposure 
to increased RINs costs in the future, nor can we predict the extent by which costs associated with RFS2 will impact our future 
results of operations.

Competition in the refining and marketing industry is intense, and an increase in competition in the markets in which we sell 
our products could adversely affect our earnings and profitability. 

We compete with a broad range of refining and marketing companies, including certain multinational oil companies. Because of 
their geographic diversity, larger and more complex refineries, integrated operations and greater resources, some of our competitors 
may be better able to withstand volatile market conditions, to obtain crude oil in times of shortage and to bear the economic risks 
inherent in all areas of the refining industry. 

We are not engaged in petroleum exploration and production activities and do not produce any of the crude oil feedstocks used at 
our refineries. We do not have a retail business and therefore are dependent upon others for outlets for our refined products. Certain 
of  our  competitors,  however,  obtain  a  portion  of  their  feedstocks  from  company-owned  production  and  have  retail  outlets. 
Competitors that have their own production or extensive retail outlets, with brand-name recognition, are at times able to offset 
losses from refining operations with profits from producing or retailing operations, and may be better positioned to withstand 
periods of depressed refining margins or feedstock shortages. 

In recent years there have been several refining and marketing consolidations or acquisitions between entities competing in our 
geographic market. These transactions could increase the future competitive pressures on us. 

The markets in which we compete may be impacted by competitors' plans for expansion projects and refinery improvements that 
could increase the production of refined products in our areas of operation and significantly affect our profitability.

Also, the potential operation of new or expanded refined product transportation pipelines, or the conversion of existing pipelines 
into refined product transportation pipelines, could impact the supply of refined products to our existing markets and negatively 
affect our profitability.

In addition, we compete with other industries that provide alternative means to satisfy the energy and fuel requirements of our 
industrial, commercial and individual consumers. The more successful these alternatives become as a result of governmental 
regulations, technological advances, consumer demand, improved pricing or otherwise, the greater the impact on pricing and 
demand for our products and our profitability. There are presently significant governmental and consumer pressures to increase 
the use of alternative fuels in the United States.  

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A disruption to or proration of the refined product distribution systems we utilize could negatively impact our profitability.

We utilize various common carrier or other third party pipeline systems to deliver our products to market. The key systems utilized 
by the Cheyenne, El Dorado, Navajo, Woods Cross, and Tulsa Refineries are Rocky Mountain, NuStar Energy, SFPP and Plains, 
Chevron, and Magellan, respectively. All five refineries also utilize systems owned by HEP. If these key pipelines or their associated 
tanks and terminals become inoperative or decrease the capacity available to us, we may not be able to sell our product, or we 
may be required to hold our product in inventory or supply products to our customers through an alternative pipeline or by rail or 
additional tanker trucks from the refinery, all of which could increase our costs and result in a decline in profitability.

We may be subject to information technology system failures, network disruptions and breaches in data security. 

Information technology system failures, network disruptions (whether intentional by a third party or due to natural disaster), 
breaches of network or data security, or disruption or failure of the network system used to monitor and control pipeline operations 
could disrupt our operations by impeding our processing of transactions, our ability to protect customer or company information 
and our financial reporting. Our computer systems, including our back-up systems, could be damaged or interrupted by power 
outages, computer and telecommunications failures, computer viruses, internal or external security breaches, events such as fires, 
earthquakes, floods, tornadoes and hurricanes, and/or errors by our employees. There can be no assurance that a system failure or 
data security breach will not have a material adverse effect on our financial condition and results of operations.

We may not be able to obtain funding on acceptable terms or at all because of volatility and uncertainty in the credit and capital 
markets. This may hinder or prevent us from meeting our future capital needs.

The domestic and global financial markets and economic conditions are disrupted and volatile from time to time due to a variety 
of  factors,  including  low  consumer  confidence,  high  unemployment,  geoeconomic  and  geopolitical  issues,  weak  economic 
conditions and uncertainty in the financial services sector. In addition, the fixed-income markets have experienced periods of 
extreme volatility, which negatively impacted market liquidity conditions. Recently, the equity and debt markets for many energy 
industry companies have been adversely affected by low oil prices. As a result, the cost of raising money in the debt and equity 
capital markets has increased substantially at times while the availability of funds from these markets diminished significantly. In 
particular, as a result of concerns about the stability of financial markets generally and the solvency of lending counterparties 
specifically, the cost of obtaining money from the credit markets may increase as many lenders and institutional investors increase 
interest rates, enact tighter lending standards, refuse to refinance existing debt on similar terms or at all and reduce, or in some 
cases cease, to provide funding to borrowers. In addition, lending counterparties under any existing revolving credit facility and 
other debt instruments may be unwilling or unable to meet their funding obligations, or we may experience a decrease in our 
capacity to issue debt or obtain commercial credit or a deterioration in our credit profile, including a rating agency lowering or 
withdrawing of our credit ratings if, in its judgment, the circumstances warrant. Due to these factors, we cannot be certain that 
new debt or equity financing will be available on acceptable terms. If funding is not available when needed, or is available only 
on unfavorable terms, we may be unable to meet our obligations as they come due or we may be required to sell assets. Moreover, 
without adequate funding, we may be unable to execute our growth strategy, complete future acquisitions or construction projects, 
take advantage of other business opportunities or respond to competitive pressures, comply with regulatory requirements, or meet 
our short-term or long-term working capital requirements, any of which could have a material adverse effect on our revenues and 
results of operations. Failure to comply with regulatory requirements in a timely manner or meet our short-term or long-term 
working capital requirements could subject us to regulatory action.

We depend upon HEP for a substantial portion of the crude supply and distribution network that serve our refineries, and we 
own a significant equity interest in HEP. 

We currently own a 39% interest in HEP, including the 2% general partner interest. HEP operates a system of crude oil and 
petroleum  product  pipelines,  distribution  terminals  and  refinery  tankage  in Arizona,  Idaho,  Kansas,  Nevada,  New  Mexico, 
Oklahoma, Texas, Utah, Washington and Wyoming. HEP generates revenues by charging tariffs for transporting petroleum products 
and crude oil through its pipelines, leasing certain pipeline capacity to Alon, charging fees for terminalling refined products and 
other hydrocarbons and storing and providing other services at its terminals. HEP serves the Cheyenne, El Dorado, Navajo, Woods 
Cross and Tulsa Refineries under several long-term pipeline and terminal, tankage and throughput agreements expiring in 2019 
through 2026 and serves the El Dorado Refinery under long-term tolling agreements expiring in 2030. Furthermore, our financial 
statements include the consolidated results of HEP. HEP is subject to its own operating and regulatory risks, including, but not 
limited to: 

• 
• 

its reliance on its significant customers, including us;
competition from other pipelines;

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• 
• 
• 
• 
• 

environmental regulations affecting pipeline operations;
operational hazards and risks;
pipeline tariff regulations affecting the rates HEP can charge;
limitations on additional borrowings and other restrictions due to HEP's debt covenants; and
other financial, operational and legal risks.

The occurrence of any of these risks could directly or indirectly affect HEP's as well as our financial condition, results of operations 
and cash flows as HEP is a consolidated VIE. Additionally, these risks could affect HEP's ability to continue operations which 
could affect their ability to serve our supply and distribution network needs. 

For additional information about HEP, see “Holly Energy Partners, L.P.” under Items 1 and 2, “Business and Properties.” For risks 
related to HEP's business, see Item 1A of HEP's Annual Report on Form 10-K for the fiscal year ended December 31, 2015.

We are exposed to the credit risks, and certain other risks, of our key customers and vendors. 

We are subject to risks of loss resulting from nonpayment or nonperformance by our customers. We derive a significant portion 
of our revenues from contracts with key customers.

If any of our key customers default on their obligations to us, our financial results could be adversely affected. Furthermore, some 
of our customers may be highly leveraged and subject to their own operating and regulatory risks. In addition, nonperformance 
by vendors who have committed to provide us with products or services could result in higher costs or interfere with our ability 
to successfully conduct our business.  

Any substantial increase in the nonpayment and/or nonperformance by our customers or vendors could have a material adverse 
effect on our results of operations and cash flows.

Terrorist attacks (including cyber-attacks), and the threat of terrorist attacks or domestic vandalism, have resulted in increased 
costs to our business. Continued global hostilities or other sustained military campaigns may adversely impact our results of 
operations. 

The long-term impacts of terrorist attacks, such as the attacks that occurred on September 11, 2001, and the threat of future terrorist 
attacks (including cyber-attacks) on the energy transportation industry in general, and on us in particular, are unknown. Increased 
security measures taken by us as a precaution against possible terrorist attacks or vandalism have resulted in increased costs to 
our business. Uncertainty surrounding continued global hostilities or other sustained military campaigns, and the possibility that 
infrastructure facilities could be direct targets of, or indirect casualties of, an act of terror, may affect our operations in unpredictable 
ways, including disruptions of crude oil supplies and markets for refined products. In addition, disruption or significant increases 
in energy prices could result in government-imposed price controls. Any one of, or a combination of, these occurrences could 
have a material adverse effect on our business, financial condition and results of operations.

Changes in the insurance markets attributable to terrorist attacks could make certain types of insurance more difficult for us to 
obtain. Moreover, the insurance that may be available to us may be significantly more expensive than our existing insurance 
coverage. Instability in the financial markets as a result of terrorism or war could also affect our ability to raise capital including 
our ability to repay or refinance debt.

Increases in required fuel economy and regulation of CO2 emissions from motor vehicles may reduce demand for transportation 
fuels.

In 2010, the EPA and the National Highway Traffic Safety Administration (“NHTSA”) finalized new standards, raising the required 
Corporate Average Fuel Economy (“CAFE”) of the nation's passenger fleet by 40% to approximately 35 miles per gallon (“m.p.g.”) 
by 2016 and imposing the first-ever federal GHG emissions standards on cars and light trucks. In September 2011, the EPA and 
the Department of Transportation finalized first-time standards for fuel economy of medium and heavy duty trucks. On August 
28, 2012, the EPA and NHTSA adopted standards through model year 2025 in two phases. The first phase establishes final standards 
for 2017-2021 model year vehicles that are projected to require 40.3 - 41.0 m.p.g. in model year 2021 on an average industry fleet-
wide basis. The second phase of the CAFE program represents non-final “augural” standards for 2022-2025 model year vehicles 
that are projected to require 48.7 - 49.7 m.p.g. in model year 2025, on an average industry fleet-wide basis. Such increases in fuel 
economy standards, along with mandated increases in use of renewable fuels discussed above, could result in decreasing demand 
for petroleum fuels. Decreasing demand for petroleum fuels could have a material effect on our financial condition and results of 
operation.

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To successfully operate our petroleum refining facilities, we are required to expend significant amounts for capital outlays and 
operating expenditures. 

The refining business is characterized by high fixed costs resulting from the significant capital outlays associated with refineries, 
terminals, pipelines and related facilities. We are dependent on the production and sale of quantities of refined products at refined 
product margins sufficient to cover operating costs, including any increases in costs resulting from future inflationary pressures 
or market conditions and increases in costs of fuel and power necessary in operating our facilities. Furthermore, future major 
capital investment, various environmental compliance related projects, regulatory requirements or competitive pressures could 
result in additional capital expenditures, which may not produce a return on investment. Such capital expenditures may require 
significant financial resources that may be contingent on our access to capital markets and commercial bank loans. Additionally, 
other matters, such as regulatory requirements or legal actions, may restrict our access to funds for capital expenditures. 

Our refineries consist of many processing units, a number of which have been in operation for many years. One or more of the 
units may require unscheduled downtime for unanticipated maintenance or repairs that are more frequent than our scheduled 
turnaround for such units. Scheduled and unscheduled maintenance could reduce our revenues during the period of time that the 
units  are  not  operating. We  have  taken  significant  measures  to  expand  and  upgrade  units  in  our  refineries  by  installing  new 
equipment and redesigning older equipment to improve refinery capacity. The installation and redesign of key equipment at our 
refineries  involves  significant  uncertainties,  including  the  following:  our  upgraded  equipment  may  not  perform  at  expected 
throughput levels; operating costs of the upgraded equipment may be higher than expected; the yield and product quality of new 
equipment may differ from design and/or specifications and redesign, modification or replacement of the equipment may be 
required to correct equipment that does not perform as expected, which could require facility shutdowns until the equipment has 
been redesigned or modified. Any of these risks associated with new equipment, redesigned older equipment, or repaired equipment 
could lead to lower revenues or higher costs or otherwise have a negative impact on our future financial condition and results of 
operations.

In addition, we expect to execute turnarounds at our refineries, which involve numerous risks and uncertainties. These risks include 
delays and incurrence of additional and unforeseen costs. The turnarounds allow us to perform maintenance, upgrades, overhaul 
and repair of process equipment and materials, during which time all or a portion of the refinery will be under scheduled downtime. 

We may be unable to pay future dividends. 

We will only be able to pay dividends from our available cash on hand, cash from operations or borrowings under our credit 
agreement. The declaration of future dividends on our common stock will be at the discretion of our board of directors and will 
depend upon many factors, including our results of operations, financial condition, earnings, capital requirements, and restrictions 
in our debt agreements and legal requirements. We cannot assure you that any dividends will be paid or the frequency or amounts 
of such payments. 

Product liability claims and litigation could adversely affect our business and results of operations. 

A significant portion of our operating responsibility on refined product pipelines is to insure the quality and purity of the products 
loaded at our loading racks. If our quality control measures were to fail, we may have contaminated or off-specification commingled 
pipelines and storage tanks or off-specification product could be sent to public gasoline stations. These types of incidents could 
result in product liability claims from our customers.

Product liability is a significant commercial risk. Substantial damage awards have been made in certain jurisdictions against 
manufacturers and resellers based upon claims for injuries caused by the use of or exposure to various products. There can be no 
assurance that product liability claims against us would not have a material adverse effect on our business or results of operations 
or our ability to maintain existing customers or retain new customers.

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Our hedging transactions may limit our gains and expose us to other risks.

We periodically enter into derivative transactions as it relates to inventory levels and/or future production to manage the risks from 
changes in the prices of crude oil, refined products and other feedstocks. These transactions limit our potential gains if commodity 
prices move above or below the certain price levels established by our hedging instruments. We hedge price risk on inventories 
above our target levels to minimize the impact these price fluctuations have on our earnings and cash flows. Consequently, our 
hedging results may fluctuate significantly from one reporting period to the next depending on commodity price fluctuations and 
our relative physical inventory positions. These transactions may also expose us to risks of financial losses; for example, if our 
production is less than we anticipated at the time we entered into a hedge agreement or if a counterparty to our hedge agreements 
fails to perform its obligations under the agreements.

Changes in our credit profile, or a significant increase in the price of crude oil, may affect our relationship with our suppliers, 
which could have a material adverse effect on our liquidity and limit our ability to purchase sufficient quantities of crude oil 
to operate our refineries at desired capacity.

An unfavorable credit profile, or a significant increase in the price of crude oil, could affect the way crude oil suppliers view our 
ability to make payments and induce them to shorten the payment terms of their invoices with us or require credit enhancement. 
Due to the large dollar amounts and volume of our crude oil and other feedstock purchases, any imposition by our suppliers of 
more burdensome payment terms or credit enhancement requirements on us may have a material adverse effect on our liquidity 
and our ability to make payments to our suppliers. This in turn could cause us to be unable to operate our refineries at desired 
capacity. A failure to operate our refineries at desired capacity could adversely affect our profitability and cash flow. 

Our credit facility contains certain covenants and restrictions that may constrain our business and financing activities.

The operating and financial restrictions and covenants in our credit facility and any future financing agreements could adversely 
affect our ability to finance future operations or capital needs or to engage, expand or pursue our business activities. For example, 
our revolving credit facility imposes usual and customary requirements for this type of credit facility, including: (i) limitations on 
liens and indebtedness; (ii) a prohibition on changes in control and (iii) restrictions on engaging in mergers and consolidations. If 
we fail to satisfy the covenants set forth in the credit facility or another event of default occurs under the credit facility, the maturity 
of the loan could be accelerated or we could be prohibited from borrowing for our future working capital needs and issuing letters 
of credit. We might not have, or be able to obtain, sufficient funds to make these immediate payments. If we desire to undertake 
a transaction that is prohibited by the covenants in our credit facility, we will need to obtain consent under our credit facility. Such 
refinancing may not be possible or may not be available on commercially acceptable terms.

Our business may suffer due to a departure of any of our key senior executives or other key employees. Furthermore, a shortage 
of skilled labor or disruptions in our labor force may make it difficult for us to maintain labor productivity.

Our future performance depends to a significant degree upon the continued contributions of our senior management team and key 
technical personnel. We do not currently maintain key man life insurance, non-compete agreements, or employment agreements 
with respect to any member of our senior management team. The loss or unavailability to us of any member of our senior management 
team or a key technical employee could significantly harm us. We face competition for these professionals from our competitors, 
our customers and other companies operating in our industry. To the extent that the services of members of our senior management 
team and key technical personnel would be unavailable to us for any reason, we may be required to hire other personnel to manage 
and operate our company. We may not be able to locate or employ such qualified personnel on acceptable terms, or at all.

Furthermore, our operations require skilled and experienced laborers with proficiency in multiple tasks. A shortage of trained 
workers due to retirements or otherwise could have an adverse impact on our labor productivity and costs and our ability to expand 
production in the event there is an increase in the demand for our products and services, which could adversely affect our operations. 
As of December 31, 2015, approximately 34% of our employees were represented by labor unions under collective bargaining 
agreements with various expiration dates. We may not be able to renegotiate our collective bargaining agreements when they 
expire on satisfactory terms or at all. A failure to do so may increase our costs. In addition, our existing labor agreements may not 
prevent a strike or work stoppage at any of our facilities in the future, and any work stoppage could negatively affect our results 
of operations and financial condition.

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The  market  price  of  our  common  stock  may  fluctuate  significantly,  and  the  value  of  a  stockholder’s  investment  could  be 
impacted.

The market price of our common stock may be influenced by many factors, some of which are beyond our control, including:

• 
• 
• 
• 
• 
• 
• 
• 

our quarterly or annual earnings or those of other companies in our industry;
changes in accounting standards, policies, guidance, interpretations or principles;
general economic, industry and stock market conditions;
the failure of securities analysts to cover our common stock or changes in financial estimates by analysts;
future sales of our common stock;
announcements by us or our competitors of significant contracts or acquisitions;
sales of common stock by us, our senior officers or our affiliates; and/or
the other factors described in these Risk Factors.

In recent years, the stock market has experienced extreme price and volume fluctuations. This volatility has had a significant 
impact on the market price of securities issued by many companies, including companies in our industry. The price of our common 
stock could fluctuate based upon factors that have little or nothing to do with our company, and these fluctuations could materially 
reduce our stock price.

Item 1B.  Unresolved Staff Comments

We do not have any unresolved staff comments. 

Item 3.  Legal Proceedings

Commitment and Contingency Reserves

We periodically establish reserves for certain legal proceedings. The establishment of a reserve involves an estimation process 
that includes the advice of legal counsel and subjective judgment of management. While management believes these reserves to 
be adequate, future changes in the facts and circumstances could result in the actual liability exceeding the estimated ranges of 
loss and amounts accrued.

While the outcome and impact on us cannot be predicted with certainty, based on advice of counsel, management believes that 
the resolution of these proceedings through settlement or adverse judgment will not either individually or in the aggregate have 
a materially adverse effect on our financial condition, results of operations or cash flows.

Environmental Matters

We are reporting the following proceedings to comply with SEC regulations which require us to disclose proceedings arising under 
federal, state or local provisions regulating the discharge of materials into the environment or protecting the environment if we 
reasonably believe that such proceedings may result in monetary sanctions of $100,000 or more. Our respective subsidiaries have 
or will develop corrective action plans regarding these disclosures that will be implemented in consultation with the respective 
federal and state agencies. It is not possible to predict the ultimate outcome of these proceedings, although none are currently 
expected to have a material effect on our financial condition, results of operations or cash flows. 

Cheyenne
HollyFrontier Cheyenne Refining LLC (“HFCR”), our wholly-owned subsidiary, completed certain environmental audits at the 
Cheyenne Refinery regarding compliance with federal and state environmental requirements. By letters dated October 5, 2012, 
November 7, 2012, and January 10, 2013, and pursuant to the EPA's audit policy to the extent applicable, HFCR submitted reports 
to the EPA voluntarily disclosing non-compliance with certain emission limitations, reporting requirements, and provisions of a 
2009 federal consent decree. By letters dated October 31, 2012; February 6, 2013; June 21, 2013; July 9, 2013 and July 25, 2013, 
and pursuant to applicable Wyoming audit statutes, HFCR submitted environmental audit reports to the Wyoming Department of 
Environmental Quality (“WDEQ”) voluntarily disclosing non-compliance with certain notification, reporting, and other provisions 
of the refinery's state air permit and other environmental regulatory requirements. No further action has been taken by either agency 
at this time. In early 2016, the Cheyenne Refinery settled an outstanding Notice of Violations issued in January 2013 for a non-
material amount.

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Tulsa
HollyFrontier Tulsa Refining LLC (“HFTR”) manufactures paraffin and hydrocarbon waxes at its Tulsa West facility. On March 
11, 2014, the EPA issued a notice to HFTR of possible violations of certain provisions of the federal Toxic Substances Control 
Act in connection with the manufacture of certain of these products. HFTR and the EPA met and are working productively towards 
a settlement of this matter.

Fuels Regulation
Between November 2010 and February 2012, certain of our subsidiaries submitted multiple reports to the EPA to voluntarily 
disclose non-compliance with fuels regulations at the Cheyenne, El Dorado, Navajo, Tulsa and Woods Cross Refineries and at the 
Cedar City, Utah and Henderson, Colorado terminals. Our subsidiaries have concluded settlement discussions with the EPA in 
order to resolve the voluntarily disclosed non-compliance events, and a Consent Decree reflecting the terms of the settlement has 
been entered by the U.S. District Court.

Other 

We are a party to various other litigation and proceedings that we believe, based on advice of counsel, will not either individually 
or in the aggregate have a materially adverse impact on our financial condition, results of operations or cash flows. 

Item 4.  Mine Safety Disclosures

Not Applicable.

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PART II

Item 5.  Market for the Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity 

Securities

Our common stock is traded on the New York Stock Exchange under the trading symbol “HFC.” The following table sets forth 
the range of the daily high and low sales prices per share of common stock, dividends declared per share and the trading volume 
of common stock for the periods indicated:

Years Ended December 31,

High

Low

Dividends

Trading Volume

2015

Fourth quarter

Third quarter

Second quarter

First quarter

2014

Fourth quarter

Third quarter

Second quarter

First quarter

$

$

$

$

$

$

$

$

52.30

54.73

43.71

45.05

46.47

51.31

53.42

50.74

$

$

$

$

$

$

$

$

39.00

42.68

35.89

30.15

35.31

42.76

43.61

43.17

$

$

$

$

$

$

$

$

0.33

0.33

0.33

0.32

0.82

0.82

0.82

0.80

153,988,900

213,026,200

157,763,200

210,069,400

152,657,400

139,658,000

152,909,200

174,540,200

In May 2015, our Board of Directors approved a $1 billion share repurchase program authorizing us to repurchase common stock 
in the open market or through privately negotiated transactions based on market conditions, securities law limitations and other 
relevant considerations. The following table includes repurchases made under this program during the fourth quarter of 2015.

Period
October 2015
November 2015
December 2015
Total for October to December 2015

Total Number of
Shares Purchased
2,200,000
1,700,000
1,300,000
5,200,000

Average Price
Paid Per Share
48.82
$
49.75
$
45.22
$

Total Number of
Shares Purchased
as Part of Publicly 
Announced Plans or 
Programs

Maximum Dollar
Value of Shares
that May Yet Be
Purchased under the 
Plans or Programs

2,200,000
1,700,000
1,300,000
5,200,000

$
$
$

451,555,135
366,981,645
308,192,745

As of February 9, 2016, we had approximately 87,745 stockholders, including beneficial owners holding shares in street name.

We intend to consider the declaration of a dividend on a quarterly basis, although there is no assurance as to future dividends since 
they are dependent upon future earnings, capital requirements, our financial condition and other factors.

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Item 6.  Selected Financial Data

The following table shows our selected financial information as of the dates or for the periods indicated. This table should be read 
in conjunction with Item 7, “Management's Discussion and Analysis of Financial Condition and Results of Operations” and our 
consolidated financial statements and related notes thereto included elsewhere in this Annual Report on Form 10-K.

2015

Years Ended December 31,
2013

2012

2014

2011

FINANCIAL DATA (1)
For the period

Sales and other revenues
Income before income taxes (2)
Income tax provision
Net income
Less net income attributable to noncontrolling interest
Net income attributable to HollyFrontier stockholders
Earnings per share attributable to HollyFrontier

stockholders - basic

Earnings per share attributable to HollyFrontier

stockholders - diluted

Cash dividends declared per common share
Average number of common shares outstanding:

(In thousands, except per share data)

$ 13,237,920
1,208,568
406,060
802,508
62,407
740,101

$

$ 19,764,327
467,500
141,172
326,328
45,036
281,292

$

$ 20,160,560
1,159,399
391,576
767,823
31,981
735,842

$

$ 20,090,724
2,787,995
1,027,962
1,760,033
32,861
$ 1,727,172

$ 15,439,528
1,641,695
581,991
1,059,704
36,307
$ 1,023,397

$

$
$

3.91

3.90
1.31

$

$
$

1.42

1.42
3.26

$

$
$

3.66

3.64
3.20

$

$
$

8.41

8.38
3.10

$

$
$

6.46

6.42
1.34

Basic
Diluted

188,731
188,940

197,243
197,428

200,419
201,234

204,379
205,274

157,948
158,756

Net cash provided by operating activities
Net cash provided by (used for) investing activities
Net cash used for financing activities

979,626
$
$
(381,748) $
$
$ (1,099,330) $

869,174
758,596
$
(526,735) $
(292,322) $
(838,392) $ (1,160,035) $

$ 1,662,687

(711,104) $
(772,788) $

$ 1,338,391
228,494
(217,082)

At end of period

Cash, cash equivalents and investments in marketable

securities

Working capital (3)
Total assets (4)
Total debt (4,5)
Total equity

210,552
$
$
587,450
$ 8,388,299
$ 1,040,040
$ 5,809,773

$ 1,042,095
$ 1,549,004
$ 9,230,047
$ 1,054,297
$ 6,100,719

$ 1,665,263
$ 2,445,953
$ 10,055,763
$
996,543
$ 6,609,398

$ 2,393,401
$ 2,961,037
$ 10,326,628
$ 1,333,869
$ 6,642,658

$ 1,840,610
$ 2,205,746
$ 9,573,896
$ 1,212,395
$ 5,835,900

(1)  We merged with Frontier on July 1, 2011. Our consolidated financial and operating results reflect the operations of the merged Frontier 
businesses beginning July 1, 2011. See “Company Overview” under Items 1 and 2, “Business and Properties” for information on our 
merger.

(2)  Reflects non-cash lower of cost or market inventory valuation adjustment charges of $227.0 million and $397.5 million for the years 

ended December 31, 2015 and 2014, respectively.  

(3)  Prior period working capital has been recast to reflect the early adoption of a November 2015 accounting standard update requiring 
current deferred tax liabilities and assets to be classified as noncurrent amounts. See Note 1 "Description of Business and Summary 
of Significant Accounting Policies" in the Notes to Consolidated Financial Statements.

(4)  Prior period total assets and debt have been recast to reflect the early adoption of an April 2015 accounting standard update requiring 
debt issuance costs to be presented as a direct deduction from the carrying amount of the debt liability. See Note 1 "Description of 
Business and Summary of Significant Accounting Policies" in the Notes to Consolidated Financial Statements.

(5)  Includes total HEP debt of $1,008.8 million, $867.0 million, $806.7 million, $863.5 million and $525.0 million, respectively, which 

is non-recourse to HollyFrontier.

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Item 7.  Management’s Discussion and Analysis of Financial Condition and Results of Operations

This Item 7 contains “forward-looking” statements. See “Forward-Looking Statements” at the beginning of this Annual Report 
on Form 10-K. In this document, the words “we,” “our,” “ours” and “us” refer only to 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  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 principally an independent petroleum refiner that produces high-value refined products such as gasoline, diesel fuel, jet 
fuel, specialty lubricant products, and specialty and modified asphalt. We own and operate refineries having a combined nameplate 
crude oil processing capacity of 443,000 barrels per day that serve markets throughout the Mid-Continent, Southwest and Rocky 
Mountain regions of the United States. Our refineries are 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), Cheyenne, Wyoming (the Cheyenne Refinery) and Woods Cross, Utah (the Woods Cross 
Refinery).

For the year ended December 31, 2015, net income attributable to HollyFrontier stockholders was $740.1 million compared to 
$281.3 million and $735.8 million for the years ended December 31, 2014, and 2013, respectively. Overall gross refining margins 
per produced product sold for 2015 increased 15% over the year ended December 31, 2014, which was due principally to strong 
operational reliability and utilization rates across our refining system. Additionally, net income for the years ended December 31, 
2015 and 2014 reflect non-cash charges of $227.0 million ($139.0 million after-tax) and $397.5 million ($244.0 million after-tax), 
respectively, to adjust the value of our inventory to the lower of cost or market.

For the year, our reliability and process safety initiatives drove our refinery utilization rate to 97.6%, the highest level achieved 
since our merger and a 6% increase compared to 2014. Additionally, improved operational reliability, cost management efforts 
and lower natural gas costs contributed to a 7% reduction in operating expenses to $1,060.4 million and gross refining margins 
increased to $16.07. Together, strong operational performance, improved realized margins and lower operating costs drove a 74% 
increase in earnings per share compared to 2014 (exclusive of inventory valuation charges).

OUTLOOK

Our profitability is affected by the spread, or differential, between the market prices for crude oil on the world market (which is 
based on the price for Brent, North Sea Crude) and the price for inland U.S. crude oil (which is based on the price for WTI). We 
expect continued volatility in the pricing relationship between inland and coastal crude, which is currently averaging in the range 
of $1.00 to $(1.00) per barrel.

Pursuant to the 2007 Energy Independence and Security Act, the EPA promulgated the RFS2 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 RINs, in lieu of such 
blending. Our RINs costs are material and represent a cost of products sold. The price of RINs may be extremely volatile due to 
real or perceived future shortages in RINs. As of December 31, 2015, we are purchasing RINs in order to meet approximately half 
of our renewable fuel requirements.

A more detailed discussion of our financial and operating results for the years ended December 31, 2015, 2014 and 2013 is presented 
in the following sections.

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Results Of Operations

Financial Data

2015

Years Ended December 31,
2014
(In thousands, except per share data)

2013

Sales and other revenues
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)

Lower of cost or market inventory valuation adjustment

Operating expenses (exclusive of depreciation and amortization)
General and administrative expenses (exclusive of depreciation and

amortization)

Depreciation and amortization

Total operating costs and expenses

Income from operations
Other income (expense):

Earnings (loss) of equity method investments
Interest income
Interest expense
Loss on early extinguishment of debt
Gain on sale of assets and other

Income before income taxes
Income tax provision
Net income
Less net income attributable to noncontrolling interest
Net income attributable to HollyFrontier stockholders
Earnings per share attributable to HollyFrontier stockholders:

Basic
Diluted

Cash dividends declared per common share
Average number of common shares outstanding:

Basic
Diluted

Other Financial Data

Net cash provided by operating activities
Net cash used for investing activities
Net cash used for financing activities
Capital expenditures
EBITDA (1)

$

13,237,920

$

19,764,327

$

20,160,560

10,239,218
226,979
10,466,197
1,060,373

120,846
346,151
11,993,567
1,244,353

(3,738)
3,391
(43,470)
(1,370)
9,402
(35,785)
1,208,568
406,060
802,508
62,407
740,101

3.91
3.90
1.31

188,731
188,940

$

$
$
$

17,228,385
397,478
17,625,863
1,144,940

114,609
363,381
19,248,793
515,534

(2,007)
4,430
(43,646)
(7,677)
866
(48,034)
467,500
141,172
326,328
45,036
281,292

1.42
1.42
3.26

197,243
197,428

$

$
$
$

17,392,227
—
17,392,227
1,090,850

127,963
303,446
18,914,486
1,246,074

(2,072)
5,556
(68,050)
(22,109)
—
(86,675)
1,159,399
391,576
767,823
31,981
735,842

3.66
3.64
3.20

200,419
201,234

2015

Years Ended December 31,
2014
(In thousands)

2013

$
979,626
(381,748) $
(1,099,330) $
$
676,155
$
1,533,761

$
758,596
(292,322) $
(838,392) $
$
564,821
$
832,738

869,174
(526,735)
(1,160,035)
425,127
1,515,467

$

$
$
$

$
$
$
$
$

(1)  Earnings before interest, taxes, depreciation and amortization, which we refer to as “EBITDA,” is calculated as net income 
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 

37

 
 
Table of Content

to net income under “Reconciliations to Amounts Reported Under Generally Accepted Accounting Principles” following 
Item 7A of Part II of this Form 10-K.

Our operations are organized into two reportable segments, Refining and HEP. See Note 19 “Segment Information” in the Notes 
to Consolidated Financial Statements for additional information on our reportable segments.

Refining Operating Data

Our refinery operations include the El Dorado, Tulsa, Navajo, Cheyenne 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  and  depreciation  and  amortization.  Reconciliations  to  amounts  reported  under  GAAP  are  provided  under 
“Reconciliations to Amounts Reported Under Generally Accepted Accounting Principles” following Item 7A of Part II of this 
Form 10-K.

Consolidated
Crude charge (BPD) (1)
Refinery throughput (BPD) (2)
Refinery production (BPD) (3)
Sales of produced refined products (BPD)
Sales of refined products (BPD) (4)
Refinery utilization (5)

Average per produced barrel (6)

Net sales
Cost of products (7)
Refinery gross margin (8)
Refinery operating expenses (9)
Net operating margin (8)

Refinery operating expenses per throughput barrel (10)

Years Ended December 31,

2015

2014

2013

432,560
463,580
446,560
438,000
488,350

406,180
436,400
425,010
420,990
461,640

387,520
424,780
413,820
410,730
446,390

97.6%

91.7%

87.5%

$

$

$

71.32
55.25
16.07
5.71
10.36

5.39

$

$

$

110.19
96.21
13.98
6.38
7.60

6.16

$

$

$

115.60
99.61
15.99
6.15
9.84

5.95

(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)  Refinery production represents the barrels per day of refined products yielded from processing crude and other refinery 

feedstocks through the crude units and other conversion units at our refineries.

(4)  Includes refined products purchased for resale.
(5)  Represents crude charge divided by total crude capacity (BPSD). Our consolidated crude capacity is 443,000 BPSD.
(6)  Represents average per barrel amount for produced refined products 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 7A of Part II of this Form 10-K.

(7)  Transportation, terminal and refinery storage costs billed from HEP are included in cost of products.
(8)  Excludes lower of cost or market inventory valuation adjustment of $227.0 million and $397.5 million for the years ended 

December 31, 2015 and 2014, respectively.

(9)  Represents operating expenses of our refineries, exclusive of depreciation and amortization and pension settlement costs.
(10) Represents refinery operating expenses, exclusive of depreciation and amortization and pension settlement costs, divided 

by refinery throughput.

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Table of Content

Results of Operations – Year Ended December 31, 2015 Compared to Year Ended December 31, 2014 

Summary
Net income attributable to HollyFrontier stockholders for the year ended December 31, 2015 was $740.1 million ($3.91 per basic 
and $3.90 per diluted share), a $458.8 million increase compared to $281.3 million ($1.42 per basic and diluted share) for the year 
ended December 31, 2014. Net income increased due principally to a year-over-year increase in refining margins and sales volumes, 
improved operational reliability and lower operating expenses. Additionally, current year earnings reflect a non-cash lower of cost 
or market inventory valuation charge of $139.0 million, net of tax, a decrease compared to $244.0 million in 2014. Refinery gross 
margins for the year ended December 31, 2015 increased to $16.07 per produced barrel from $13.98 for the year ended December 31, 
2014.

Sales and Other Revenues
Sales and other revenues decreased 33% from $19,764.3 million for the year ended December 31, 2014 to $13,237.9 million for 
the year ended December 31, 2015 due to a year-over-year decrease in sales prices, partially offset by higher refined product sales 
volumes. The average sales price we received per produced barrel sold decreased 35% from $110.19 for the year ended December 31, 
2014 to $71.32 for the year ended December 31, 2015. Sales and other revenues for the years ended December 31, 2015 and 2014 
include $66.7 million and $57.3 million, respectively, in HEP revenues attributable to pipeline and transportation services provided 
to unaffiliated parties.

Cost of Products Sold
Total cost of products sold decreased 41% from $17,625.9 million for the year ended December 31, 2014 to $10,466.2 million for 
the year ended December 31, 2015, due principally to lower crude oil costs and a $170.5 million year-over-year decrease in lower 
of cost or market inventory valuation charges, partially offset by higher sales volumes of refined products. During 2015, we 
recognized a $227.0 million charge attributable to a new $624.5 million lower of cost or market reserve at December 31, 2015 
that was partially offset by the reversal of the $397.5 million inventory reserve that was established at December 31, 2014. The 
reserve at December 31, 2015 is based on market conditions and prices at that time. Excluding this non-cash adjustment, the 
average price we paid per barrel for crude oil and feedstocks and the transportation costs of moving the finished products to the 
market place decreased 43% from $96.21 for the year ended December 31, 2014 to $55.25 for the year ended December 31, 2015.

Gross Refinery Margins
Gross refinery margin per produced barrel increased 15% from $13.98 for the year ended December 31, 2014 to $16.07 for the 
year ended December 31, 2015. This was due to the effects of decreased crude oil and feedstock prices, partially offset by a decrease 
in the average per barrel sales price for refined products sold during the current year. Gross refinery margin 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 7A of Part II of this Form 10-K for a 
reconciliation to the income statement of prices of refined products sold and cost of products purchased.

Operating Expenses
Operating  expenses,  exclusive  of  depreciation  and  amortization,  decreased  7%  from  $1,144.9  million  for  the  year  ended 
December 31, 2014 to $1,060.4 million for the year ended December 31, 2015 due principally to a year-over-year decrease in 
repair  and  maintenance  and  natural  gas  fuel  costs  and  lower  environmental  accruals  compared  to  2014.  For  the  years  ended 
December 31, 2015 and 2014, operating expenses include $100.0 million and $103.4 million, respectively, in costs attributable to 
HEP operations.

General and Administrative Expenses
General and administrative expenses increased 5% from $114.6 million for the year ended December 31, 2014 to $120.8 million 
for the year ended December 31, 2015. This is attributable to overall higher incentive compensation and legal costs for the current 
year, net of the effects of state high-wage credits recognized during the second quarter of 2015. For the years ended December 31, 
2015 and 2014, general and administrative expenses include $10.2 million and $8.5 million, respectively, in costs attributable to 
HEP operations.

Depreciation and Amortization Expenses
Depreciation and amortization decreased 5% from $363.4 million for the year ended December 31, 2014 to $346.2 million for the 
year ended December 31, 2015. This decrease was due principally to the recognition of higher accelerated depreciation levels of 
assets no longer in operation during 2014, partially offset by depreciation and amortization during the current year attributable to 
capitalized improvement projects and capitalized refinery turnaround costs. For the years ended December 31, 2015 and 2014, 
depreciation  and  amortization  expenses  include  $61.2  million  and  $60.5  million,  respectively,  in  costs  attributable  to  HEP 
operations.

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Table of Content

Interest Income
Interest income for the year ended December 31, 2015 was $3.4 million compared to $4.4 million for the year ended December 31, 
2014. This decrease was due to lower investment levels in marketable debt securities during the current year period.

Interest Expense
Interest  expense  was  $43.5  million  for  the  year  ended  December 31,  2015  compared  to  $43.6  million  for  the  year  ended 
December 31, 2014. This slight decrease is due principally to the effects of lower HollyFrontier interest expense as a result of the  
June 2015 redemption of the $150.0 million HollyFrontier senior notes, net of increased HEP interest expense attributable to higher 
year-over-year HEP debt levels. For the years ended December 31, 2015 and 2014, interest expense included $36.9 million and 
$36.1 million, respectively, in interest costs attributable to HEP operations.

Loss on Early Extinguishment of Debt
In June 2015, we redeemed our $150.0 million aggregate principal amount of 6.875% senior notes maturing November 2018 at 
a redemption cost of $155.2 million, at which time we recognized a $1.4 million early extinguishment loss consisting of a $5.2 
million debt redemption premium, net of an unamortized premium of $3.8 million. 

In March 2014, HEP redeemed its $150.0 million aggregate principal amount of 8.25% senior notes maturing March 2018 at a 
redemption cost of $156.2 million, at which time it recognized a $7.7 million early extinguishment loss consisting of a $6.2 million 
debt redemption premium and unamortized discount and financing costs of $1.5 million. 

Income Taxes
For the year ended December 31, 2015, we recorded income tax expense of $406.1 million compared to $141.2 million for the 
year ended December 31, 2014. This increase was due principally to higher pre-tax earnings during the year ended December 31, 
2015 compared to 2014. Our effective tax rates, before consideration of earnings attributable to the noncontrolling interest, were 
33.6% and 30.2% for the years ended December 31, 2015 and 2014, respectively.

Results of Operations – Year Ended December 31, 2014 Compared to Year Ended December 31, 2013 

Summary
Net income attributable to HollyFrontier stockholders for the year ended December 31, 2014 was $281.3 million ($1.42 per basic 
and diluted share), a $454.6 million decrease compared to $735.8 million ($3.66 per basic and $3.64 per diluted share) for the 
year ended December 31, 2013. Net income decreased due principally to a non-cash lower of cost or market inventory valuation 
charge of $244.0 million, net of tax, and a year-over-year decrease in refining margins. Refinery gross margins for the year ended 
December 31, 2014 decreased to $13.98 per produced barrel from $15.99 for the year ended December 31, 2013.

Sales and Other Revenues
Sales and other revenues decreased 2% from $20,160.6 million for the year ended December 31, 2013 to $19,764.3 million for 
the year ended December 31, 2014 due to a decrease in year-over-year sales prices, partially offset by higher refined product sales 
volumes. The average sales price we received per produced barrel sold decreased 5% from $115.60 for the year ended December 31, 
2013 to $110.19 for the year ended December 31, 2014. Sales and other revenues for the years ended December 31, 2014 and 
2013 include $57.3 million and $53.4 million, respectively, in HEP revenues attributable to pipeline and transportation services 
provided to unaffiliated parties.

Cost of Products Sold
Cost of products sold decreased 1% from $17,392.2 million for the year ended December 31, 2013 to $17,228.4 million for the 
year ended December 31, 2014, due principally to a decrease in year-over-year crude costs, partially offset by higher refined 
product sales volumes. The average price we paid per barrel for crude oil and feedstocks and the transportation costs of moving 
the finished products to the market place decreased 3% from $99.61 for the year ended December 31, 2013 to $96.21 for the year 
ended December 31, 2014.

Lower of Cost or Market Inventory Valuation Adjustment
For the year ended December 31, 2014, we recorded a $397.5 million non-cash charge against income from operations to adjust 
the value of our inventory to the lower of cost or market at December 31, 2014. This is attributable to a significant decrease in 
market prices for crude oil and refined products at December 31, 2014. There was no comparable inventory valuation adjustment 
for the year ended December 31, 2013. 

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Gross Refinery Margins
Gross refinery margin per produced barrel decreased 13% from $15.99 for the year ended December 31, 2013 to $13.98 for the 
year ended December 31, 2014. This was due to a decrease in average per barrel sales prices for refined products sold, partially 
offset by decreased crude oil and feedstock prices for the current year. Gross refinery margin  per produced barrel does not include 
the  non-cash  effects  of  lower  of  cost  or  market  inventory  valuation  adjustments  and  depreciation  and  amortization.  See 
“Reconciliations to Amounts Reported Under Generally Accepted Accounting Principles” following Item 7A of Part II of this 
Form 10-K for a reconciliation to the income statement of prices of refined products sold and cost of products purchased.

Operating Expenses
Operating  expenses,  exclusive  of  depreciation  and  amortization,  increased  5%  from  $1,090.9  million  for  the  year  ended 
December 31, 2013 to $1,144.9 million for the year ended December 31, 2014 due principally to higher year-over-year repair and 
maintenance and natural gas fuel costs and increased environmental accruals, partially offset by $31.7 million in pension settlement 
costs incurred during 2013. For the years ended December 31, 2014 and 2013, operating expenses include $103.4 million and 
$95.7 million, respectively, in costs attributable to HEP operations.

General and Administrative Expenses
General and administrative expenses decreased 10% from $128.0 million for the year ended December 31, 2013 to $114.6 million 
for the year ended December 31, 2014 due principally to lower incentive compensation expense during the current year, and the 
effects of $4.5 million in pension settlement costs incurred in 2013. For the years ended December 31, 2014 and 2013, general 
and administrative expenses include $8.5 million and $9.4 million, respectively, in costs attributable to HEP operations.

Depreciation and Amortization Expenses
Depreciation and amortization increased 20% from $303.4 million for the year ended December 31, 2013 to $363.4 million for 
the year ended December 31, 2014. The increase was due principally to depreciation and amortization attributable to capitalized 
improvement projects, capitalized refinery turnaround costs and accelerated depreciation of assets no longer in operation. For the 
years  ended  December 31,  2014  and  2013,  depreciation  and  amortization  expenses  include  $60.5  million  and  $64.7  million, 
respectively, in costs attributable to HEP operations.

Interest Income
Interest income for the year ended December 31, 2014 was $4.4 million compared to $5.6 million for the year ended December 31, 
2013. This decrease was due to lower investment levels in marketable debt securities during 2014 as compared to 2013.

Interest Expense
Interest  expense  was  $43.6  million  for  the  year  ended  December 31,  2014  compared  to  $68.1  million  for  the  year  ended 
December 31, 2013. This decrease was due to lower year-over-year debt levels. For the years ended December 31, 2014 and 2013, 
interest expense included $36.1 million and $46.8 million, respectively, in interest costs attributable to HEP operations.

Loss on Early Extinguishment of Debt
In March 2014, HEP redeemed its $150.0 million aggregate principal amount of 8.25% senior notes maturing March 2018 at a 
redemption cost of $156.2 million, at which time it recognized a $7.7 million early extinguishment loss consisting of a $6.2 million 
debt redemption premium and unamortized discount and financing costs of $1.5 million. In June 2013, we redeemed our $286.8 
million aggregate principal amount of 9.875% senior notes maturing June 2017 at a redemption cost of $301.0 million, at which 
time we recognized a $22.1 million early extinguishment loss consisting of a $14.2 million debt redemption premium and an 
unamortized discount of $7.9 million.

Income Taxes
For the year ended December 31, 2014, we recorded income tax expense of $141.2 million compared to $391.6 million for the 
year ended December 31, 2013. This decrease was due principally to lower pre-tax earnings during the year ended December 31, 
2014 compared to 2013. Our effective tax rates, before consideration of earnings attributable to the noncontrolling interest, were 
30.2% and 33.8% for the years ended December 31, 2014 and 2013, respectively.

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LIQUIDITY AND CAPITAL RESOURCES

HollyFrontier Credit Agreement 
We have a $1 billion senior unsecured revolving credit facility maturing in July 2019 (the “HollyFrontier Credit Agreement”), 
which may be used for revolving credit loans and letters of credit from time to time and is available to fund general corporate 
purposes. Indebtedness under the HollyFrontier Credit Agreement is recourse to HollyFrontier. At December 31, 2015, we were 
in compliance with all covenants, had no outstanding borrowings and had outstanding letters of credit totaling $6.0 million under 
the HollyFrontier Credit Agreement. 

HEP Credit Agreement
HEP has an $850 million senior secured revolving credit facility that matures in November 2018 (the “HEP Credit Agreement”) 
and is available to fund capital expenditures, investments, acquisitions, distribution payments and working capital and for general 
partnership purposes. It is also available to fund letters of credit up to a $50 million sub-limit. At December 31, 2015, HEP was 
in compliance with all of its covenants, had outstanding borrowings of $712.0 million and no outstanding letters of credit under 
the HEP Credit Agreement.

See Note 11 "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. In addition, components of our growth strategy include construction of new refinery processing units and 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.

As of December 31, 2015, our cash, cash equivalents and investments in marketable securities totaled $210.6 million. We consider 
all highly-liquid instruments with a maturity of three months or less at the time of purchase to be cash equivalents. Cash equivalents 
are  stated  at  cost,  which  approximates  market  value.  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.

In May 2015, our Board of Directors approved a $1 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 our Board of Directors. As of  December 31, 2015, we had remaining authorization 
to repurchase up to $308.2 million 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.

Cash and cash equivalents decreased $501.5 million for the year ended December 31, 2015. Net cash used for investing and 
financing activities of $381.7 million and $1,099.3 million, respectively, exceeded net cash provided by operating activities of 
$979.6 million. Working capital decreased by $961.6 million during the year ended December 31, 2015.

Cash Flows – Operating Activities

Year Ended December 31, 2015 Compared to Year Ended December 31, 2014 
Net cash flows provided by operating activities were $979.6 million for the year ended December 31, 2015 compared to $758.6 
million for the year ended December 31, 2014, an increase of $221.0 million. Net income for the year ended December 31, 2015 
was $802.5 million, an increase of $476.2 million compared to $326.3 million for the year ended December 31, 2014. Non-cash 
adjustments to net income consisting of lower of cost or market inventory valuation adjustment, depreciation and amortization, 
net loss of equity method investments, inclusive of distributions, gain on sale of assets, unamortized premium / discount on early 
extinguishment of debt, deferred income taxes, equity-based compensation expense and fair value changes to derivative instruments 
totaled $492.0 million for the year ended December 31, 2015 compared to $580.0 million for the same period in 2014. Changes 
in working capital items decreased cash flows by $195.1 million for the year ended December 31, 2015 compared to $64.1 million 
for the year ended December 31, 2014.  For the year ended December 31, 2015, turnaround expenditures decreased to $89.4 million 
from $96.8 million for the same period of 2014.

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Table of Content

Year Ended December 31, 2014 Compared to Year Ended December 31, 2013 
Net cash flows provided by operating activities were $758.6 million for the year ended December 31, 2014 compared to $869.2 
million for the year ended December 31, 2013, a decrease of $110.6 million. Net income for the year ended December 31, 2014 
was $326.3 million, a decrease of $441.5 million compared to $767.8 million for the year ended December 31, 2013. Non-cash 
adjustments to net income consisting of lower of cost or market inventory valuation adjustment, depreciation and amortization, 
net loss of equity method investments, inclusive of distributions, unamortized discount on the early extinguishments of debt, gain 
on sale of assets, deferred income taxes, equity-based compensation expense, fair value changes to derivative instruments and 
loss on settlement of retirement benefit obligations, net of contributions totaled $580.0 million for the year ended December 31, 
2014 compared to $430.4 million for the same period in 2013. Changes in working capital items decreased cash flows by $64.1 
million for the year ended December 31, 2014 compared to $157.0 million for the year ended December 31, 2013. Additionally, 
for the year ended December 31, 2014, turnaround expenditures decreased to $96.8 million from $193.9 million for the same 
period of 2013.

Cash Flows – Investing Activities and Planned Capital Expenditures

Year Ended December 31, 2015 Compared to Year Ended December 31, 2014 
Net cash flows used for investing activities were $381.7 million for the year ended December 31, 2015 compared to $292.3 million 
for the year ended December 31, 2014, an increase of $89.4 million. Cash expenditures for properties, plants and equipment for 
2015 increased to $676.2 million from $564.8 million for the same period in 2014. These include HEP capital expenditures of 
$94.5 million and $109.7 million for the years ended December 31, 2015 and 2014, respectively. We received proceeds of $19.3 
million and $16.6 million from the sale of assets during the years ended December 31, 2015 and 2014, respectively. For the years 
ended December 31, 2015 and 2014, we invested $509.3 million and $1,025.6 million, respectively, in marketable securities and 
received  proceeds  of  $839.5  million  and  $1,276.4  million,  respectively,  from  the  sale  or  maturity  of  marketable  securities.  
Additionally, HEP purchased a 50% interest in Frontier Pipeline for $55.0 million. 

Year Ended December 31, 2014 Compared to Year Ended December 31, 2013 
Net cash flows used for investing activities were $292.3 million for the year ended December 31, 2014 compared to $526.7 million 
for the year ended December 31, 2013, a decrease of $234.4 million. Cash expenditures for properties, plants and equipment for 
2014 increased to $564.8 million from $425.1 million for the same period in 2013. These include HEP capital expenditures of 
$109.7 million and $56.6 million for the years ended December 31, 2014 and 2013, respectively. We received proceeds of $16.6 
million and $7.8 million from the sale of assets during the years ended December 31, 2014 and 2013, respectively. For the year 
ended December 31, 2013, we acquired trucking operations for $11.3 million. Also for the years ended December 31, 2014 and 
2013, we invested $1,025.6 million and $935.5 million, respectively, in marketable securities and received proceeds of $1,276.4 
million and $846.1 million, respectively, from the sale or maturity of marketable securities.

Planned Capital Expenditures 

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. During 2016, 
we expect to spend approximately $475.0 million to $500.0 million in cash for capital projects appropriated in 2016 and prior 
years. In addition, we expect to spend approximately $110.0 million to $120.0 million on refinery turnarounds. Refinery turnaround 
spending is amortized over the useful life of the turnaround. Our expected capital and turnaround cash spending for 2016 is as 
follows:

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Table of Content

Location:

El Dorado

Tulsa

Navajo

Cheyenne

Woods Cross

Corporate and Other

Total

Type:

Sustaining

Reliability and Growth

Compliance and Safety

Turnarounds

Total

Expected Cash Spending
Range

$

$

$

$

50.0

165.0

140.0

130.0

80.0

20.0

585.0

115.0

150.0

210.0

110.0

585.0

$

$

$

$

55.0

175.0

145.0

135.0

85.0

25.0

620.0

120.0

160.0

220.0

120.0

620.0

A significant portion of our current capital spending is associated with compliance-oriented capital improvements. This spending 
is required due to existing consent decrees (for projects including FCC unit flue gas scrubbers and tail gas treatment units), federal 
fuels regulations (particularly, Tier 3 which mandates a reduction in the sulfur content of blended gasoline), refinery waste water 
treatment improvements and other similar initiatives. 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. 

El Dorado Refinery
Capital  projects  at  the  El  Dorado  Refinery  include  the  completion  of  an  FCC  gasoline  hydrotreater  to  meet Tier  3  gasoline 
requirements and a new tail gas treating unit to provide spare capacity to the existing unit. Growth projects include an upgrade 
project to improve reformer operation, yield and reliability. A project to improve Coker unit yield and capacity is currently being 
evaluated. 

Tulsa Refineries
Capital spending for the Tulsa Refineries includes a project to improve FCC yields that will be implemented during a turnaround 
starting in February 2016. In conjunction with our Tier 3 strategy at the Tulsa Refineries, we are installing a new naphtha fractionation 
unit that improves both yield and octane enhancements to the gasoline pool.

Navajo Refinery
The Navajo Refinery capital spending in 2016 is primarily directed towards the installation of an FCC gasoline hydrotreater unit 
to address Tier 3 compliance. Additionally, the Navajo Refinery plans to increase crude capacity through targeted upgrades to  
several processing units that is expected to provide greater diesel and gasoline flexibility and increased diesel production.

Cheyenne Refinery
The Cheyenne Refinery capital spending in 2016 includes the completion of wastewater treatment plant improvements and a 
project to improve FCC yield and reliability to be implemented during a turnaround starting in April. An expansion to the heavy 
oil rack will allow an increase of asphalt and gas oil exports, and work progresses on a study to provide a redundant tail gas unit 
associated with the sulfur recovery process.

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Woods Cross Refinery
Construction continues on our existing expansion project to increase planned processing capacity to 45,000 BPSD and includes 
new refining facilities and a new rail loading rack for intermediates and finished products associated with refining waxy crude 
oil. This initial phase of the project is expected to cost $420.0 million and is planned to be put into operation during the first quarter 
of 2016. An additional investment of $20.0 million is being made to allow for greater crude slate flexibility, which we believe will 
increase capacity utilization and improve overall economic returns during periods when wax crudes are in short supply. 

On November 18, 2013, the Utah Division of Air Quality issued a revised air quality permit (the “Approval Order”) authorizing 
the expansion. On December 18, 2013, two local environmental groups filed an administrative appeal challenging the issuance 
of the Approval Order and seeking a stay of the Approval Order. Following an extended appeal process, the Executive Director 
of the Utah Department of Environmental Quality issued a final order in favor of Woods Cross on all claims on March 31, 2015 
and dismissed the project opponents' arguments with prejudice. On April 27, 2015, the opponents filed a petition for review and 
notice of appeal with the Utah Court of Appeals challenging the agency's decision to uphold the permit and dismiss the project 
opponents' arguments. This appeal is now pending before the Utah Court of Appeals. The final legal briefs were submitted in 
December 2015. The expansion, and expected completion timeline and cost, are subject to the Woods Cross Refinery successfully 
defending the Approval Order on appeal at the Utah Court of Appeals.

Regulatory compliance items or other presently existing or future environmental regulations / consent decrees could cause us to 
make  additional  capital  investments  beyond  those  described  above  and  incur  additional  operating  costs  to  meet  applicable 
requirements, including those related to recently promulgated Federal Tier 3 gasoline standards.

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 of 
several years, 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. The 2016 HEP capital budget is comprised of $13.0 
million for maintenance capital expenditures and $57.0 million for expansion capital expenditures.

Cash Flows – Financing Activities

Year Ended December 31, 2015 Compared to Year Ended December 31, 2014 
Net cash flows used for financing activities were $1,099.3 million for the year ended December 31, 2015 compared to $838.4 
million for the year ended December 31, 2014, an increase of $260.9 million. During the year ended December 31, 2015, we 
purchased $742.8 million in common stock, paid $246.9 million in dividends and paid $155.2 million upon the redemption of our 
6.875%  senior  notes. Also  during  this  period,  HEP  received  $973.9  million  and  repaid  $832.9  million  under  the  HEP  Credit 
Agreement and paid distributions of $83.3 million to noncontrolling interests. During the year ended December 31, 2014, we 
purchased $158.8 million in common stock, paid $647.2 million in dividends and recognized $2.0 million excess tax benefits on 
our equity-based compensation. Also during this period, HEP received $642.3 million and repaid $434.3 million under the HEP 
Credit Agreement, paid $156.2 million upon the redemption of HEP's 8.25% senior notes and paid distributions of $78.2 million 
to noncontrolling interests. 

Year Ended December 31, 2014 Compared to Year Ended December 31, 2013 
Net cash flows used for financing activities were $838.4 million for the year ended December 31, 2014 compared to $1,160.0 
million for the year ended December 31, 2013, a decrease of $321.6 million. During the year ended December 31, 2014, we 
purchased $158.8 million in common stock, paid $647.2 million in dividends and recognized $2.0 million excess tax benefits on 
our equity-based compensation. Also during this period, HEP received $642.3 million and repaid $434.3 million under the HEP 
Credit Agreement, paid $156.2 million upon the redemption of HEP's 8.25% senior notes and paid distributions of $78.2 million 
to noncontrolling interests. During the year ended December 31, 2013, we received $73.4 million from the sale of HEP common 
units, purchased $225.0 million in common stock, paid $645.9 million in dividends, paid $301.0 million upon the redemption of 
our 9.875% senior notes and recognized $2.6 million excess tax benefits on our equity-based compensation. Also during this 
period, HEP received $310.6 million and repaid $368.6 million under the HEP Credit Agreement, paid distributions of $71.2 
million to noncontrolling interests and received proceeds of $73.4 million upon its March 2013 common unit offering. 

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Contractual Obligations and Commitments 

The following table presents our long-term contractual obligations as of December 31, 2015 in total and by period due beginning 
in 2016. The table below does not include our contractual obligations to HEP under our long-term transportation agreements as 
these related-party transactions are eliminated in the Consolidated Financial Statements. A description of these agreements is 
provided under “Holly Energy Partners, L.P.” under Items 1 and 2, “Business and Properties.” Also, the table below does not 
reflect renewal options on our operating leases that are likely to be exercised.

Contractual Obligations and Commitments

Total

Payments Due by Period

Less than  1
Year

1-3 Years
(In thousands)

3-5 Years

Over
5 Years

HollyFrontier Corporation
Long-term debt - principal (1)
Long-term debt - interest (2)
Supply agreements (3)
Transportation and storage agreements (4)
Other long-term obligations
Operating leases

Holly Energy Partners
Long-term debt - principal (5)
Long-term debt - interest (6)
Pipeline operating and right of way leases
Other agreements

Total

$

$

31,288
19,754
1,971,134
989,521
23,517
456,895
3,492,109

1,012,000
140,755
79,088
74,123
1,305,966
4,798,075

$

$

$

2,121
3,679
279,076
113,914
13,934
63,078
475,802

5,093
6,507
558,264
186,639
7,234
114,417
878,154

—
37,168
7,434
2,768
47,370
523,172

712,000
74,337
13,754
5,316
805,407
$ 1,683,561

$

$

6,483
5,117
346,472
140,958
2,349
102,227
603,606

$

17,591
4,451
787,322
548,010
—
177,173
1,534,547

300,000
29,250
13,484
3,031
345,765
949,371

—
—
44,416
63,008
107,424
$ 1,641,971

(1)  Our long-term debt consists of a long-term financing obligation having a principal balance of $31.3 million at December 31, 2015.
(2)  Interest payments consist of interest on our long-term financing obligation. 
(3)  We have long-term supply agreements to secure certain quantities of crude oil, feedstock and other resources used in the production 
process at market prices. We have estimated future payments under these fixed-quantity agreements expiring between 2016 and 
2030 using current market rates.  Additionally, commitments include purchases of 20,000 BPD of crude oil under a 10-year agreement 
to supply our Woods Cross Refinery that is expected to commence upon completion of our expansion project in the first quarter of 
2016.

(4)  Consists of contractual obligations under agreements with third parties for the transportation of crude oil, natural gas and feedstocks 

to our refineries and for terminal and storage services under contracts expiring between 2016 and 2033.

(5)  HEP's long-term debt consists of the $300.0 million principal balance on the 6.5% HEP senior notes and $712.0 million of outstanding 

borrowings under the HEP Credit Agreement. The HEP Credit Agreement expires in 2018.

(6)  Interest payments consist of interest on the 6.5% HEP senior notes and interest on long-term debt under the HEP Credit Agreement. 

Interest on the HEP Credit Agreement debt is based on the weighted average rate of 2.57% at December 31, 2015.

CRITICAL ACCOUNTING POLICIES

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. We consider the following policies to be the 
most critical to understanding the judgments that are involved and the uncertainties that could impact our results of operations, 
financial condition and cash flows. For additional information, see Note 1 “Description of Business and Summary of Significant 
Accounting Policies” in the Notes to Consolidated Financial Statements.

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Inventory Valuation 
Inventories are stated at the lower of cost, using the LIFO method for crude oil, unfinished and finished refined products and the 
average cost method for materials and supplies, 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. At December 31, 2015 and 2014, market values had 
fallen below historical LIFO inventory costs and, as a result, we recorded lower of cost or market inventory valuation reserves of 
$624.5 million and $397.5 million, respectively.

At December 31, 2015, our lower of cost or market inventory valuation reserve was $624.5 million. This amount, or a portion 
thereof, is subject to reversal as a reduction to cost of products sold in subsequent periods as inventories giving rise to the reserve 
are sold, and a new reserve is established. Such a reduction to cost of products sold could be significant if inventory values return 
to historical cost price levels. Additionally, further decreases in overall inventory values could result in additional charges to cost 
of products sold should the lower of cost or market inventory valuation reserve be increased.

Goodwill
We have goodwill that primarily arose from our merger with Frontier Oil Corporation on July 1, 2011. 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 events or circumstances indicate the possibility of impairment. 

We performed our annual goodwill impairment testing as of July 1, 2015, which entailed an assessment of our reporting unit fair 
values relative to their respective carrying values that were derived using a combination of both income and market approaches. 
Our income approach utilizes the discounted future expected cash flows. Our market approach, which includes both the guideline 
public company and guideline transaction methods, utilizes pricing multiples derived from historical market transactions of other 
like-kind assets. Our discounted cash flows reflect estimates of future cash flows based on both historical and forward crack-
spreads, forecasted production levels, operating costs and capital expenditures. Our goodwill is allocated by reporting unit as 
follows: El Dorado, $1.7 billion; Cheyenne, $0.3 billion; and HEP, $0.3 billion. Based on our testing as of July 1, 2015, the fair 
value of our Cheyenne reporting unit exceeded its carrying cost by approximately 8%. The fair value of our El Dorado and HEP 
reporting units substantially exceeded their respective carrying values. There were no impairments of goodwill during the years 
December 31, 2015, 2014 and 2013.

Historically, the refining industry has experienced significant fluctuations in operating results over an extended business cycle 
including changes in prices of crude oil and refined products, changes in operating costs including natural gas and higher costs of 
complying with government regulations. It is reasonably possible that at some future downturn in refining operations that the 
goodwill related to our Cheyenne Refinery will be determined to be impaired. A prolonged, moderate decrease in operating margins 
could potentially result in impairment to goodwill allocated to our Cheyenne reporting unit. Such impairment charges could be 
material.

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 and futures contracts to mitigate price exposure with respect to:

• 
• 

our inventory positions;
natural gas purchases;

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• 
• 
• 

costs of crude oil and related grade differentials;
prices of refined products; and
our refining margins.

As of December 31, 2015, we have the following notional contract volumes related to all outstanding derivative contracts used 
to mitigate commodity price risk:

Contract Description

Natural gas price swaps - long

Natural gas price swaps - short

Notional Contract Volumes
by Year of Maturity

Total
Outstanding
Notional

2016

2017

Unit of
Measure

38,400,000

19,200,000

19,200,000 MMBTU

19,200,000

9,600,000

9,600,000 MMBTU

Natural gas price swaps (basis spread) - long

20,616,000

10,308,000

10,308,000 MMBTU

Crude price swaps (basis spread) - long

11,712,000

11,712,000

NYMEX futures (WTI) - short

1,840,000

1,840,000

Forward gasoline and diesel contracts - long

Forward gasoline and diesel contracts - short

Physical crude contracts - short

525,000

625,000

38,000

525,000

625,000

38,000

— Barrels

— Barrels

— Barrels

— Barrels

— Barrels

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

Commodity-based Derivative Contracts

2015

2014

Hypothetical 10% change in underlying commodity prices

$

(In thousands)

23,130

$

11,947

Estimated Change in Fair Value at December 31,

Interest Rate Risk Management
HEP uses interest rate swaps to manage its exposure to interest rate risk.

As of December 31, 2015, HEP had three interest rate swap contracts that hedge its exposure to the cash flow risk caused by the 
effects of LIBOR changes on $305.0 million in credit agreement advances. The first interest rate swap effectively converts $155.0 
million  of  LIBOR  based  debt  to  fixed-rate  debt  having  an  interest  rate  of  0.99%  plus  an  applicable  margin  of  2.25%  as  of 
December 31, 2015, which equaled an effective interest rate of 3.24%. This swap matures in February 2016. HEP has two additional 
interest rate swaps with identical terms which effectively convert $150.0 million of LIBOR based debt to fixed-rate debt having 
an interest rate of 0.74% plus an applicable margin of 2.25% as of December 31, 2015, which equaled an effective interest rate 
of 2.99%. Both of these swap contracts mature in July 2017. These swap contracts have been designated as cash flow hedges.

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 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 December 31, 2015 is presented below:

HEP Senior Notes

$

300,000

$

295,500

$

7,561

Outstanding
Principal

Estimated
Fair Value
(In thousands)

Estimated
Change in
Fair Value

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For the variable rate HEP Credit Agreement, changes in interest rates would affect cash flows, but not the fair value. At December 31, 
2015, outstanding borrowings under the HEP Credit Agreement were $712.0 million. By means of its cash flow hedges, HEP has 
effectively converted the variable rate on $305.0 million of outstanding principal to a weighted average fixed rate of 3.12%. For 
the remaining unhedged Credit Agreement borrowings of $407.0 million, a hypothetical 10% change in interest rates applicable 
to the HEP Credit Agreement would not materially affect cash flows. 

At  December 31,  2015,  our  marketable  securities  included  investments  in  investment  grade,  highly-liquid  investments  with 
maturities generally not greater than one year from the date of purchase and hence the interest rate market risk implicit in these 
investments is low. Due to the short-term nature of our cash and cash equivalents, a hypothetical 10% increase in interest rates 
would not have a material effect on the fair market value of our portfolio. Since we have the ability to liquidate this portfolio, we 
do not expect our operating results or cash flows to be materially affected by the effect of a sudden change in market interest rates 
on our investment portfolio.

Our operations are subject to hazards of petroleum processing operations, including fire, explosion and weather-related perils. We 
maintain various insurance coverages, including business interruption insurance, subject to certain deductibles. 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.

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.

Item 7A.  Quantitative and Qualitative Disclosures About Market Risk

See “Risk Management” under “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

Reconciliations to Amounts Reported Under Generally Accepted Accounting Principles

Reconciliations  of  earnings  before  interest,  taxes,  depreciation  and  amortization  (“EBITDA”)  to  amounts  reported  under 
generally accepted accounting principles in financial statements.

Earnings before interest, taxes, depreciation and amortization, which we refer to as EBITDA, is calculated as net income 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.

Set forth below is our calculation of EBITDA.

Net income attributable to HollyFrontier stockholders

Add income tax provision
Add interest expense (1)
Subtract interest income
Add depreciation and amortization

EBITDA

Years Ended December 31,
2014

2013

2015

(In thousands)

$

$

740,101
406,060
44,840
(3,391)
346,151
1,533,761

$

$

281,292
141,172
51,323
(4,430)
363,381
832,738

$

$

735,842
391,576
90,159
(5,556)
303,446
1,515,467

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(1)  Includes loss on early extinguishment of debt of $1.4 million, $7.7 million and $22.1 million for the years ended December 31, 2015, 2014 

and 2013, respectively.

Reconciliations of refinery operating information (non-GAAP performance measures) to amounts reported under generally 
accepted accounting principles in financial statements.

Refinery gross margin and net operating margin are non-GAAP performance measures that are used by our management and others 
to compare our refining performance to that of other companies in our industry. We believe these margin measures are helpful to 
investors in evaluating our refining performance on a relative and absolute basis.

Refinery gross margin per barrel is the difference between average net sales price and average cost of products per barrel of 
produced refined products. Net operating margin per barrel is the difference between refinery gross margin and refinery operating 
expenses per barrel of produced refined products. These two margins do not include the non-cash effects of lower of cost or market 
inventory  valuation  adjustments  or  depreciation  and  amortization.  Each  of  these  component  performance  measures  can  be 
reconciled directly to our consolidated statements of income.

Other companies in our industry may not calculate these performance measures in the same manner.

Refinery Gross and Net Operating Margins

Below are reconciliations to our consolidated statements of income for (i) net sales, cost of products (exclusive of lower of cost 
or market inventory valuation adjustment) and operating expenses, in each case averaged per produced barrel sold, and (ii) net 
operating margin and refinery gross margin. Due to rounding of reported numbers, some amounts may not calculate exactly.

Reconciliation of produced product sales to total sales and other revenues

Consolidated
Average sales price per produced barrel sold
Times sales of produced refined products (BPD)
Times number of days in period
Produced refined product sales

Total produced refined product sales
Add refined product sales from purchased products and rounding (1)
Total refined product sales
Add direct sales of excess crude oil (2)
Add other refining segment revenue (3)
Total refining segment revenue
Add HEP segment sales and other revenues
Add corporate and other revenues
Subtract consolidations and eliminations
Sales and other revenues

Years Ended December 31,
2014

2013

2015

(Dollars in thousands, except per barrel amounts)

$

$

$

$

71.32
438,000
365
11,401,928

11,401,928
1,214,920
12,616,848
352,113
202,222
13,171,183
358,875
663
(292,801)
13,237,920

$

$

$

$

110.19
420,990
365
16,931,944

16,931,944
1,566,925
18,498,869
1,060,354
147,002
19,706,225
332,626
2,103
(276,627)
19,764,327

$

$

$

$

115.60
410,730
365
17,330,342

17,330,342
1,581,395
18,911,737
1,052,915
140,791
20,105,443
307,053
1,314
(253,250)
20,160,560

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Reconciliation of average cost of products per produced barrel sold to cost of products sold (exclusive of lower of cost or 
market inventory valuation adjustment)

Consolidated
Average cost of products per produced barrel sold
Times sales of produced refined products (BPD)
Times number of days in period
Cost of products for produced products sold

Total cost of products for produced products sold
Add refined product costs from purchased products and rounding (1)
Total cost of refined products sold
Add crude oil cost of direct sales of excess crude oil (2)
Add other refining segment cost of products sold (4)
Total refining segment cost of products sold
Subtract consolidations and eliminations
Costs of products sold (exclusive of lower of cost or market inventory
valuation adjustment and depreciation and amortization)

Years Ended December 31,
2014

2013

2015

(Dollars in thousands, except per barrel amounts)

$

$

$

$

$

$

55.25
438,000
365
8,832,818

8,832,818
1,245,451
10,078,269
348,362
98,979
10,525,610
(286,392)

$

$

$

96.21
420,990
365
14,783,758

14,783,758
1,572,944
16,356,702
1,030,235
113,664
17,500,601
(272,216)

99.61
410,730
365
14,933,178

14,933,178
1,553,476
16,486,654
1,048,224
106,241
17,641,119
(248,892)

$

10,239,218

$

17,228,385

$

17,392,227

Reconciliation of average refinery operating expenses per produced barrel sold to total operating expenses

Consolidated
Average refinery operating expenses per produced barrel sold
Times sales of produced refined products (BPD)
Times number of days in period
Refinery operating expenses for produced products sold

Total refinery operating expenses for produced products sold
Add refining segment pension settlement costs
Add other refining segment operating expenses and rounding (5)
Total refining segment operating expenses
Add HEP segment operating expenses
Add corporate and other costs
Subtract consolidations and eliminations
Operating expenses (exclusive of depreciation and amortization)

Years Ended December 31,
2014

2013

2015

(Dollars in thousands, except per barrel amounts)

$

$

$

$

5.71
438,000
365
912,858

912,858
—
44,062
956,920
103,305
3,433
(3,285)
1,060,373

$

$

$

$

6.38
420,990
365
980,359

980,359
—
42,810
1,023,169
104,801
18,402
(1,432)
1,144,940

$

$

$

$

6.15
410,730
365
921,986

921,986
31,657
39,812
993,455
97,081
1,739
(1,425)
1,090,850

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Reconciliation of net operating margin per barrel to refinery gross margin per barrel to total sales and other revenues

Consolidated
Net operating margin per barrel
Add average refinery operating expenses per produced barrel
Refinery gross margin per barrel
Add average cost of products per produced barrel sold
Average sales price per produced barrel sold
Times sales of produced refined products sold (BPD)
Times number of days in period
Produced refined product sales

Total produced refined product sales
Add refined product sales from purchased products and rounding (1)
Total refined product sales
Add direct sales of excess crude oil (2)
Add other refining segment revenue (3)
Total refining segment revenue
Add HEP segment sales and other revenues
Add corporate and other revenues
Subtract consolidations and eliminations
Sales and other revenues

Years Ended December 31,
2014

2013

2015

(Dollars in thousands, except per barrel amounts)

10.36
5.71
16.07
55.25
71.32
438,000
365
11,401,928

11,401,928
1,214,920
12,616,848
352,113
202,222
13,171,183
358,875
663
(292,801)
13,237,920

$

$

$

$

$

7.60
6.38
13.98
96.21
110.19
420,990
365
16,931,944

16,931,944
1,566,925
18,498,869
1,060,354
147,002
19,706,225
332,626
2,103
(276,627)
19,764,327

$

$

$

$

$

9.84
6.15
15.99
99.61
115.60
410,730
365
17,330,342

17,330,342
1,581,395
18,911,737
1,052,915
140,791
20,105,443
307,053
1,314
(253,250)
20,160,560

$

$

$

$

$

(1)  We purchase finished products to facilitate delivery to certain locations or to meet delivery commitments.
(2)  We purchase crude oil that at times exceeds the supply needs of our refineries. Quantities in excess of our needs are sold at market 
prices to purchasers of crude oil that are recorded on a gross basis with the sales price recorded as revenues and the corresponding 
acquisition cost as inventory and then upon sale as cost of products sold. Additionally, at times we enter into buy/sell exchanges of 
crude oil with certain parties to facilitate the delivery of quantities to certain locations that are netted at cost.

(3)  Other refining segment revenue includes the incremental revenues associated with HFC Asphalt, product purchased and sold forward 

for profit as market conditions and available storage capacity allows and miscellaneous revenue.

(4)  Other refining segment cost of products sold includes the incremental cost of products for HFC Asphalt, the incremental cost associated 
with storing product purchased and sold forward as market conditions and available storage capacity allows and miscellaneous costs.
(5)  Other refining segment operating expenses include the marketing costs associated with our refining segment and the operating expenses 

of HFC Asphalt.

52

 
 
 
 
Table of Content

Item 8.  Financial Statements and Supplementary Data

MANAGEMENT'S REPORT ON ITS ASSESSMENT OF THE COMPANY'S INTERNAL CONTROL OVER 
FINANCIAL REPORTING

Management of HollyFrontier Corporation (the “Company”) is responsible for establishing and maintaining adequate internal 
control over financial reporting.

All internal control systems, no matter how well designed, have inherent limitations. Therefore, even those systems determined 
to be effective can provide only reasonable assurance with respect to financial statement preparation and presentation.

Management assessed the Company's internal control over financial reporting as of December 31, 2015 using the criteria for 
effective control over financial reporting established in “Internal Control - Integrated Framework” issued by the Committee of 
Sponsoring Organizations of the Treadway Commission (2013 framework). Based on this assessment, management concludes 
that, as of December 31, 2015, the Company maintained effective internal control over financial reporting.

The Company's independent registered public accounting firm has issued an attestation report on the effectiveness of the Company's 
internal control over financial reporting as of December 31, 2015. That report appears on page 53.

53

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

The Board of Directors
and Stockholders of HollyFrontier Corporation

We have audited HollyFrontier Corporation's internal control over financial reporting as of December 31, 2015, based on criteria 
established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway 
Commission (2013 framework), (the “COSO criteria”). HollyFrontier Corporation's management is responsible for maintaining 
effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial 
reporting included in the accompanying Management's Report on its Assessment of the Company's Internal Control over Financial 
Reporting. Our responsibility is to express an opinion on the Company's internal control over financial reporting based on our 
audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). 
Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control 
over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control 
over  financial  reporting,  assessing  the  risk  that  a  material  weakness  exists,  testing  and  evaluating  the  design  and  operating 
effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in 
the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability 
of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted 
accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain 
to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets 
of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial 
statements in accordance with generally accepted accounting principles and that receipts and expenditures of the company are 
being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable 
assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that 
could have a material effect on the financial statements.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements. Also, 
projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because 
of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, HollyFrontier Corporation maintained, in all material respects, effective internal control over financial reporting 
as of December 31, 2015, based on the COSO criteria.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the 
consolidated  balance  sheets  of  HollyFrontier  Corporation  as  of  December 31,  2015  and  2014,  and  the  related  consolidated 
statements of income, comprehensive income, cash flows and equity for each of the three years in the period ended December 31, 
2015 of HollyFrontier Corporation and our report dated February 24, 2016 expressed an unqualified opinion thereon.

/s/ 

ERNST & YOUNG LLP

Dallas, Texas
February 24, 2016 

54

 
Index to Consolidated Financial Statements

Report of Independent Registered Public Accounting Firm

Consolidated Balance Sheets at December 31, 2015 and 2014

Consolidated Statements of Income for the years ended

December 31, 2015, 2014 and 2013

Consolidated Statements of Comprehensive Income for the years ended

December 31, 2015, 2014 and 2013

Consolidated Statements of Cash Flows for the years ended

December 31, 2015, 2014 and 2013

Consolidated Statements of Equity for the years ended

December 31, 2015, 2014 and 2013

Notes to Consolidated Financial Statements

Page
Reference

56

57

58

59

60

61

62

55

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors
and Stockholders of HollyFrontier Corporation

We have audited the accompanying consolidated balance sheets of HollyFrontier Corporation (the “Company”) as of December 31, 
2015 and 2014, and the related consolidated statements of income, comprehensive income, cash flows and equity for each of the 
three years in the period ended December 31, 2015. These financial statements are the responsibility of the Company's management. 
Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). 
Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements 
are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures 
in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by 
management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable 
basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position 
of HollyFrontier Corporation at December 31, 2015 and 2014, and the consolidated results of its operations and its cash flows for 
each of the three years in the period ended December 31, 2015, in conformity with U.S. generally accepted accounting principles.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), 
HollyFrontier Corporation's internal control over financial reporting as of December 31, 2015, based on criteria established in 
Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission 
(2013 framework), and our report dated February 24, 2016 expressed an unqualified opinion thereon.

Dallas, Texas
February 24, 2016 

/s/ 

ERNST & YOUNG LLP

56

 
Table of Content

ASSETS
Current assets:

HOLLYFRONTIER CORPORATION
CONSOLIDATED BALANCE SHEETS
(In thousands, except share data)

Cash and cash equivalents (HEP: $15,013 and $2,830, respectively)
Marketable securities

Total cash, cash equivalents and short-term marketable securities

Accounts receivable: Product and transportation (HEP: $41,075 and $40,129, respectively)

Crude oil resales

Inventories:  Crude oil and refined products

Materials, supplies and other (HEP: $1,972 and $1,940, respectively)

Income taxes receivable
Prepayments and other (HEP: $3,082 and $2,443, respectively)

Total current assets

Properties, plants and equipment, at cost (HEP: $1,388,655 and $1,307,280, respectively)
Less accumulated depreciation (HEP: $(298,282) and $(244,850), respectively)

Other assets: Turnaround costs

Goodwill (HEP: $288,991 and $288,991, respectively)
Intangibles and other (HEP: $128,583 and $73,335, respectively)

Total assets

LIABILITIES AND EQUITY
Current liabilities:

Accounts payable (HEP: $22,583 and $21,623, respectively)
Income taxes payable
Accrued liabilities (HEP: $26,341 and $26,321, respectively)

Total current liabilities

Long-term debt (HEP: $1,008,752 and $866,986, respectively)
Deferred income taxes (HEP: $431 and $367, respectively)
Other long-term liabilities (HEP: $59,306 and $47,170, respectively)

Equity:
HollyFrontier stockholders’ equity:

Preferred stock, $1.00 par value – 5,000,000 shares authorized; none issued
Common stock $.01 par value – 320,000,000 shares authorized; 255,962,866 shares issued as of

December 31, 2015 and December 31, 2014

Additional capital
Retained earnings
Accumulated other comprehensive income (loss)
Common stock held in treasury, at cost – 75,728,478 and 59,876,776 shares as of

December 31, 2015 and December 31, 2014, respectively

Total HollyFrontier stockholders’ equity

Noncontrolling interest
Total equity

Total liabilities and equity

December 31,

2015

2014

66,533
144,019
210,552
323,858
28,120
351,978
712,865
129,004
841,869
—
43,666
1,448,065

5,490,189
(1,374,527)
4,115,662
231,873
2,331,781
260,918
2,824,572
8,388,299

716,490
8,142
135,983
860,615

1,040,040
497,906
179,965

—

2,560

4,011,052
3,271,189
(4,155)

(2,027,231)
5,253,415
556,358
5,809,773
8,388,299

$

$

$

$

567,985
474,110
1,042,095
507,040
82,865
589,905
920,104
115,027
1,035,131
11,719
104,148
2,782,998

4,852,441
(1,181,902)
3,670,539
257,153
2,331,781
187,576
2,776,510
9,230,047

1,108,138
19,642
106,214
1,233,994

1,054,297
664,279
176,758

—

2,560

4,003,628
2,778,577
27,894

(1,289,075)
5,523,584
577,135
6,100,719
9,230,047

$

$

$

$

Parenthetical amounts represent asset and liability balances attributable to Holly Energy Partners, L.P. (“HEP”) as of December 31, 2015 and December 31, 
2014. HEP is a consolidated variable interest entity.

See accompanying notes.

57

Table of Content

HOLLYFRONTIER CORPORATION
CONSOLIDATED STATEMENTS OF INCOME
(In thousands, except per share data)

Years Ended December 31,
2014

2013

2015

$

13,237,920

$

19,764,327

$

20,160,560

10,239,218

17,228,385

17,392,227

226,979

10,466,197

1,060,373

120,846

346,151

11,993,567

1,244,353

(3,738)

3,391

(43,470)

(1,370)

9,402

(35,785)

1,208,568

552,196

(146,136)

406,060

802,508

62,407

740,101

3.91

3.90

188,731

188,940

$

$

$

397,478

17,625,863

1,144,940

114,609

363,381

19,248,793

515,534

(2,007)

4,430

(43,646)

(7,677)

866

(48,034)

467,500

334,834

(193,662)

141,172

326,328

45,036

281,292

1.42

1.42

197,243

197,428

$

$

$

—

17,392,227

1,090,850

127,963

303,446

18,914,486

1,246,074

(2,072)

5,556

(68,050)

(22,109)

—

(86,675)

1,159,399

277,172

114,404

391,576

767,823

31,981

735,842

3.66

3.64

200,419

201,234

Sales and other revenues

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)

Lower of cost or market inventory valuation adjustment

Operating expenses (exclusive of depreciation and amortization)

General and administrative expenses (exclusive of depreciation and

amortization)

Depreciation and amortization

Total operating costs and expenses

Income from operations

Other income (expense):

Loss of equity method investments

Interest income

Interest expense

Loss on early extinguishment of debt

Gain on sale of assets and other

Income before income taxes

Income tax provision:

Current

Deferred

Net income

Less net income attributable to noncontrolling interest

Net income attributable to HollyFrontier stockholders

Earnings per share attributable to HollyFrontier stockholders:

Basic

Diluted

Average number of common shares outstanding:

$

$

$

Basic

Diluted

See accompanying notes.

58

 
 
 
Table of Content

HOLLYFRONTIER CORPORATION
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(In thousands)

Net income

Other comprehensive income:

Securities available-for-sale:

Unrealized gain (loss) on marketable securities

Reclassification adjustments to net income on sale or maturity of marketable

securities

Net unrealized gain (loss) on marketable securities
Hedging instruments:

Change in fair value of cash flow hedging instruments
Reclassification adjustments to net income on settlement of cash flow hedging
instruments
Amortization of unrealized loss attributable to discontinued cash flow hedges

Net unrealized gain (loss) on hedging instruments
Pension and other post-retirement benefit obligations:
Pension plan loss reclassified to net income
Gain (loss) on post-retirement healthcare plan
Post-retirement healthcare plan gain reclassified to net income

Gain (loss) on retirement restoration plan

Retirement restoration plan loss reclassified to net income

Net change in pension and other post-retirement benefit obligations

Other comprehensive income (loss) before income taxes

Income tax expense (benefit)

Other comprehensive income (loss)

Total comprehensive income

Less noncontrolling interest in comprehensive income

Years Ended December 31,

2015

2014

2013

$

802,508

$

326,328

$

767,823

29

9
38

(153)

(4)
(157)

(5,847)

105,414

(47,492)
1,080
(52,259)

—
3,278

(3,299)

80

20

79

(52,142)

(20,237)

(31,905)

770,603

62,551

(50,682)
1,080
55,812

—
(7,434)

(4,296)

(615)

920

(11,425)

44,230

17,098

27,132

353,460

45,096

73

(39)
34

(7,614)

(14,318)
1,749
(20,183)

37,589
3,301

(4,040)

632

111

37,593

17,444

5,882

11,562

779,385

34,296

745,089

Comprehensive income attributable to HollyFrontier stockholders

$

708,052

$

308,364

$

    See accompanying notes.

59

 
 
 
Table of Content

HOLLYFRONTIER CORPORATION
CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)

Cash flows from operating activities:

Net income
Adjustments to reconcile net income to net cash provided by operating activities:

Lower of cost or market inventory adjustment
Depreciation and amortization
Net loss of equity method investments, inclusive of distributions
(Gain) loss on early extinguishment of debt attributable to unamortized

premium / discount
Gain on sale of assets
Deferred income taxes
Equity-based compensation expense
Change in fair value – derivative instruments
Loss on settlement of retirement benefit obligations, net of contributions
(Increase) decrease in current assets:

Accounts receivable
Inventories
Income taxes receivable
Prepayments and other

Increase (decrease) in current liabilities:

Accounts payable
Income taxes payable
Accrued liabilities
Turnaround expenditures
Other, net

Net cash provided by operating activities

Cash flows from investing activities:

Additions to properties, plants and equipment
Additions to properties, plants and equipment – HEP
Purchase of equity method investment - HEP
Proceeds from sale of assets
Acquisition of trucking operations
Purchases of marketable securities
Sales and maturities of marketable securities
Other, net

Net cash used for investing activities

Cash flows from financing activities:

Borrowings under credit agreement – HEP
Repayments under credit agreement – HEP
Redemption of senior notes
Redemption of senior notes - HEP
Proceeds from sale of HEP common units
Proceeds from common unit offerings – HEP
Purchase of treasury stock
Dividends
Distributions to noncontrolling interest
Excess tax benefit from equity-based compensation
Other, net

Net cash used for financing activities

Cash and cash equivalents:

Decrease for the period
Beginning of period
End of period

Supplemental disclosure of cash flow information:

Cash paid during the period for:

Interest
Income taxes

See accompanying notes.

Years Ended December 31,
2014

2013

2015

$

802,508

$

326,328

$

767,823

226,979
346,151
8,613

(3,788)

(8,677)
(146,136)
30,367
38,525
—

238,392
(33,717)
11,719
13,291

(406,339)
(11,500)
(6,924)
(89,365)
(30,473)
979,626

(581,639)
(94,516)
(55,032)
19,264
—
(509,338)
839,513
—
(381,748)

973,900
(832,900)
(155,156)
—
—
—
(742,823)
(246,908)
(83,268)
—
(12,175)
(1,099,330)

(501,452)
567,985
66,533

46,442
586,447

$

$
$

$

$
$

397,478
363,381
5,257

1,489
(866)
(193,662)
29,598
(22,668)
—

108,876
(78,842)
94,237
1,486

(217,541)
19,642
8,047
(96,803)
13,159
758,596

(455,128)
(109,693)
—
16,633
—
(1,025,602)
1,276,447
5,021
(292,322)

642,300
(434,300)
—
(156,188)
—
—
(158,847)
(647,197)
(78,202)
2,040
(7,998)
(838,392)

(372,118)
940,103
567,985

55,716
237,907

$

$
$

—
303,446
5,198

7,948

—
114,404
35,775
(53,185)
16,771

(68,832)
(15,929)
(34,419)
1,377

2,068
—
(41,229)
(193,920)
21,878
869,174

(368,514)
(56,613)
—
7,802
(11,301)
(935,512)
846,143
(8,740)
(526,735)

310,600
(368,600)
(300,973)
—
73,444
73,444
(225,023)
(645,920)
(71,201)
2,562
(8,368)
(1,160,035)

(817,596)
1,757,699
940,103

76,647
372,846

60

 
Table of Content

HOLLYFRONTIER CORPORATION
CONSOLIDATED STATEMENTS OF EQUITY
(In thousands)

HollyFrontier Stockholders' Equity

Balance at December 31, 2012

$

2,560

$ 3,911,353

$3,054,769

$

(8,425) $ (907,303) $

589,704

$

6,642,658

Common
Stock

Additional
Capital

Retained
Earnings

Accumulated
Other
Comprehensive
Income (Loss)

Treasury
Stock

Non-
controlling
Interest

Total Equity

Net income

Dividends

Distributions to noncontrolling interest

holders

Other comprehensive income, net of tax

Allocated equity on HEP common unit

issuances, net of tax

Issuance of common stock under incentive
compensation plans, net of forfeitures

Equity-based compensation, inclusive of

tax benefit

Purchase of treasury stock

Purchase of HEP units for restricted grants

Other
Balance at December 31, 2013

Net income

Dividends

Distributions to noncontrolling interest

holders

Other comprehensive income, net of tax

Issuance of common stock under incentive
compensation plans, net of forfeitures

Equity-based compensation, inclusive of

tax benefit

Purchase of treasury stock

Purchase of HEP units for restricted grants

Other
Balance at December 31, 2014

Net income

Dividends

Distributions to noncontrolling interest

holders

Other comprehensive income (loss), net of

tax

Issuance of common stock under incentive
compensation plans, net of forfeitures

Equity-based compensation, inclusive of

tax benefit

Purchase of treasury stock

Purchase of HEP units for restricted grants

Other
Balance at December 31, 2015

See accompanying notes.

—

—

—

—

—

—

—

—

—

—

—

—

—

—

54,184

(9,669)

34,762

—

—

—

735,842

(646,131)

—

—

—

—

—

—

—

—

—

—

—

9,247

—

—

—

—

—

—

—

—

—

—

—

9,669

—

(241,238)

—

—

31,981

—

(71,201)

2,315

767,823

(646,131)

(71,201)

11,562

58,702

112,886

—

3,575

—

(5,313)

15

—

38,337

(241,238)

(5,313)

15

$

2,560

$ 3,990,630

$3,144,480

$

822

$ (1,138,872) $

609,778

$

6,609,398

—

—

—

—

—

—

—

—

—

—

—

—

—

(15,101)

28,099

—

—

—

281,292

(647,195)

—

—

—

—

—

—

—

—

—

—

27,072

—

—

—

—

—

—

—

—

—

15,101

—

(165,304)

—

—

45,036

—

(78,202)

60

—

3,539

—

(3,577)

501

326,328

(647,195)

(78,202)

27,132

—

31,638

(165,304)

(3,577)

501

$

2,560

$ 4,003,628

$2,778,577

$

27,894

$ (1,289,075) $

577,135

$

6,100,719

—

—

—

—

—

—

—

—

—

—

—

—

—

(14,958)

22,382

—

—

—

740,101

(247,489)

—

—

—

—

—

—

—

—

—

—

(32,049)

—

—

—

—

—

—

—

—

—

14,958

—

(753,114)

—

—

62,407

—

802,508

(247,489)

(83,268)

(83,268)

144

—

3,483

—

(3,555)

12

(31,905)

—

25,865

(753,114)

(3,555)

12

$

2,560

$ 4,011,052

$3,271,189

$

(4,155) $ (2,027,231) $

556,358

$

5,809,773

61

Table of Content

HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1:  Description of Business and Summary of Significant Accounting Policies

Description  of  Business:    References  herein  to  HollyFrontier  Corporation  (“HollyFrontier”)  include  HollyFrontier  and  its 
consolidated subsidiaries. In accordance with the Securities and Exchange Commission’s (“SEC”) “Plain English” guidelines, this 
Annual Report on Form 10-K has been written in the first person. In these financial statements, the words “we,” “our,” “ours” and 
“us” refer only to 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. These financial statements contain 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.

We are principally an independent petroleum refiner 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 petroleum refineries that serve markets 
throughout the Mid-Continent, Southwest and Rocky Mountain regions of the United States. As of December 31, 2015, we:

• 

• 

• 

owned and operated a petroleum refinery in El Dorado, Kansas (the “El Dorado Refinery”), two refinery facilities located 
in Tulsa, Oklahoma (collectively, the “Tulsa Refineries”), a refinery in Artesia, New Mexico that is operated in conjunction 
with crude oil distillation and vacuum distillation and other facilities situated 65 miles away in Lovington, New Mexico 
(collectively, the “Navajo Refinery”), a refinery located in Cheyenne, Wyoming (the “Cheyenne Refinery”) and a refinery 
in Woods Cross, Utah (the “Woods Cross Refinery”);

owned and operated HollyFrontier Asphalt Company (“HFC Asphalt”), formerly known as NK Asphalt Partners, which 
operates various asphalt terminals in Arizona, New Mexico and Oklahoma; and

owned a 39% interest in HEP, a consolidated variable interest entity (“VIE”), which includes our 2% general partner 
interest.

Principles of Consolidation:  Our consolidated financial statements include our accounts and the accounts of partnerships and 
joint ventures that we control through an ownership interest greater than 50% or through a controlling financial interest with respect 
to variable interest entities. All significant intercompany transactions and balances have been eliminated. 

Variable Interest Entities:  HEP is a VIE as defined under U.S. generally accepted accounting principles (“GAAP”). A VIE is a 
legal entity whose equity owners do not have sufficient equity at risk for the entity to finance its activities without additional 
subordinated financial support or, as a group, the equity holders lack the power, through voting rights, to direct the activities that 
most significantly impact the entity's financial performance, the obligation to absorb the entity's expected losses or rights to expected 
residual returns. As the general partner of HEP, we have the sole ability to direct the activities of HEP that most significantly impact 
HEP's financial performance, and therefore we consolidate HEP.

Use of Estimates:  The preparation of financial statements in accordance with GAAP requires management to make estimates and 
assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from 
those estimates.

Cash Equivalents:  We consider all highly liquid instruments with a maturity of three months or less at the date of purchase to be 
cash equivalents. Cash equivalents are stated at cost, which approximates market value and are primarily invested in highly-rated 
instruments issued by government or municipal entities with strong credit standings.

Marketable Securities:  We consider all marketable debt securities with maturities greater than three months at the date of purchase 
to be marketable securities. Our marketable securities consist of certificates of deposit, commercial paper, corporate debt securities 
and government and municipal debt securities with the maximum maturity or put date of any individual issue generally not more 
than two years, while the maximum duration of the portfolio of investments is not greater than one year. These instruments are 
classified as available-for-sale, and as a result, are reported at fair value. Unrealized gains and losses, net of related income taxes, 
are reported as a component of accumulated other comprehensive income.

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Balance Sheet Offsetting:  We purchase and sell inventories of crude oil with certain same-parties that are net settled in accordance 
with contractual net settlement provisions. Our policy is to present such balances on a net basis because it more appropriately 
presents our economic resources (accounts receivable) and claims against us (accounts payable) and the future cash flows associated 
with such assets and liabilities.

Accounts Receivable:  Our accounts receivable consist of amounts due from customers that are primarily companies in the petroleum 
industry. Credit is extended based on our evaluation of the customer's financial condition, and in certain circumstances collateral, 
such as letters of credit or guarantees, is required. We reserve for doubtful accounts based on our historical loss experience as well 
as specific accounts identified as high risk, which historically have been minimal. Credit losses are charged to the allowance for 
doubtful accounts when an account is deemed uncollectible. Our allowance for doubtful accounts was $2.3 million and $2.4 million 
at December 31, 2015 and 2014, respectively.

Accounts receivable attributable to crude oil resales generally represent the sell side of excess crude oil sales to other purchasers 
and / or users in cases when our crude oil supplies are in excess of our immediate needs as well as certain reciprocal buy / sell 
exchanges of crude oil. At times we enter into such buy / sell exchanges to facilitate the delivery of quantities to certain locations. 
In many cases, we enter into net settlement agreements relating to the buy / sell arrangements, which may mitigate credit risk.

Inventories:  Inventories are stated at the lower of cost, using the last-in, first-out (“LIFO”) method for crude oil, unfinished and 
finished refined products and the average cost method for materials and supplies, or market. Cost, consisting of raw material, 
transportation and conversion costs, is determined using the LIFO inventory valuation methodology and market is determined 
using current replacement costs. Under the LIFO method, the most recently incurred costs are charged to cost of sales and inventories 
are valued at the earliest acquisition costs. 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 December 31, 2015, and 2014, market values had fallen below historical LIFO inventory costs and, as a result, we recorded 
lower of cost or market inventory valuation reserves of $624.5 million and $397.5 million, respectively.

Derivative Instruments:  All derivative instruments are recognized as either assets or liabilities in our consolidated balance sheets 
and are measured at fair value. Changes in the derivative instrument's fair value are recognized in earnings unless specific hedge 
accounting criteria are met. See Note 12 for additional information.

Long-lived assets:  We calculate depreciation and amortization based on estimated useful lives of our assets. We evaluate long-
lived assets for potential 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, if any, to be 
recorded is equal to the amount by which a long-lived asset's carrying value exceeds its fair value, which is generally determined 
under an income approach using the forecasted cash flows associated with the underlying asset. Estimates of future cash flows 
require subjective assumptions with regard to future operating results and actual results could differ from those estimates. No 
impairments of long-lived assets were recorded during the years ended December 31, 2015, 2014 and 2013.

Asset Retirement Obligations:  We record legal obligations associated with the retirement of long-lived assets that result from the 
acquisition, construction, development and / or the normal operation of long-lived assets. The fair value of the estimated cost to 
retire a tangible long-lived asset is recorded as a liability with the associated retirement costs capitalized as part of the asset's 
carrying amount in the period in which it is incurred and when a reasonable estimate of the fair value of the liability can be made. 
If a reasonable estimate cannot be made at the time the liability is incurred, we record the liability when sufficient information is 
available to estimate the liability's fair value. Certain of our refining assets have no recorded liability for asset retirement obligations 
since the timing of any retirement and related costs are currently indeterminable.

Our asset retirement obligations were $20.7 million and $19.8 million at December 31, 2015 and 2014, respectively, which are 
included in “Other long-term liabilities” in our consolidated balance sheets. Accretion expense was insignificant for the years 
ended December 31, 2015, 2014 and 2013. 

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Intangibles and Goodwill:  Intangible assets are assets (other than financial assets) that lack physical substance. Goodwill represents 
the excess of the cost of an acquired entity over the fair value of the assets acquired less liabilities assumed. Goodwill acquired in 
a business combination and intangible assets with indefinite useful lives are not amortized while, intangible assets with finite useful 
lives are amortized on a straight-line basis. Goodwill and intangible assets not subject to amortization are tested for impairment 
annually or more frequently if events or changes in circumstances indicate the asset might be impaired. Our analysis entails a 
comparison of the estimated fair value of these assets that are derived using a combination of both income (discounted future 
expected net cash flows) and comparable market approaches against their respective carrying values. Estimates of future cash 
flows and fair value of assets require subjective assumptions with regard to future operating results and actual results could differ 
from those estimates.

In  addition  to  goodwill,  our  consolidated  HEP  assets  include  a  third-party  transportation  agreement  that  currently  generates 
minimum annual cash inflows of $26.2 million and has an expected remaining term through 2035. The transportation agreement 
is being amortized on a straight-line basis through 2035 that results in annual amortization expense of $2.0 million. The balance 
of this transportation agreement was $38.5 million and $40.5 million at December 31, 2015 and 2014, respectively, and is presented 
net of accumulated amortization of $21.7 million and $19.7 million, respectively, in “Intangibles and other” in our consolidated 
balance sheets. There were no impairments of intangible assets or goodwill during the years ended December 31, 2015, 2014 and 
2013.

Investments in Joint Ventures:  We consolidate the financial and operating results of joint ventures in which we have an ownership 
interest of greater than 50% and use the equity method of accounting for investments in which we have a noncontrolling interest. 
Under the equity method of accounting, we record our pro-rata share of earnings, and contributions to and distributions from joint 
ventures as adjustments to our investment balance.

HEP has a 50% joint venture interest in Frontier Pipeline Company, the owner of a pipeline running from Wyoming to Frontier 
Station, Utah (the “Frontier Pipeline”), and a 25% joint venture interest in SLC Pipeline, LLC, the owner of a pipeline (the “SLC 
Pipeline”) that serves refineries in the Salt Lake City, Utah area, that are accounted for using the equity method of accounting. As 
of December 31, 2015, HEP's underlying equity in the Frontier Pipeline was $12.6 million compared to its recorded investment 
balance of $55.2 million, a difference of $42.6 million. The difference is attributable to the fair value of the fixed assets purchased. 
As of December 31, 2015, HEP's underlying equity in the SLC Pipeline was $57.7 million compared to its recorded investment 
balance of $24.3 million, a difference of $33.4 million. This is attributable to the difference between HEP's contributed capital 
and its allocated equity at formation of the SLC Pipeline. The differences are being amortized as adjustments to HEP's pro-rata 
share of earnings in the joint ventures.

Revenue Recognition:  Refined product sales and related cost of sales are recognized when products are shipped and title has 
passed to customers. HEP recognizes pipeline transportation revenues as products are shipped through its pipelines. All revenues 
are reported inclusive of shipping and handling costs billed and exclusive of any taxes billed to customers. Shipping and handling 
costs incurred are reported in cost of products sold.

Depreciation:  Depreciation is provided by the straight-line method over the estimated useful lives of the assets, primarily 20 to 
25 years for refining, pipeline and terminal facilities, 10 to 40 years for buildings and improvements, 5 to 30 years for other fixed 
assets and 5 years for vehicles.

Cost Classifications:  Costs of products sold include the cost of crude oil, other feedstocks, blendstocks and purchased finished 
products, inclusive of transportation costs. We purchase crude oil that at times exceeds the supply needs of our refineries. Quantities 
in excess of our needs are sold at market prices to purchasers of crude oil that are recorded on a gross basis with the sales price 
recorded as revenues and the corresponding acquisition cost as cost of products sold. Additionally, we enter into buy / sell exchanges 
of crude oil with certain parties to facilitate the delivery of quantities to certain locations that are netted at cost. Operating expenses 
include direct costs of labor, maintenance materials and services, utilities, marketing expense and other direct operating costs. 
General and administrative expenses include compensation, professional services and other support costs.

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Deferred Maintenance Costs:  Our refinery units require regular major maintenance and repairs which are commonly referred to 
as “turnarounds.” Catalysts used in certain refinery processes also require regular “change-outs.” The required frequency of the 
maintenance varies by unit and by catalyst, but generally is every two to five years. Turnaround costs are deferred and amortized 
over the period until the next scheduled turnaround. Other repairs and maintenance costs are expensed when incurred. Deferred 
turnaround and catalyst amortization expense was $107.8 million, $96.9 million and $84.8 million for the years ended December 31, 
2015, 2014 and 2013, respectively.

Environmental Costs:  Environmental costs are charged to operating expenses if they relate to an existing condition caused by 
past operations and do not contribute to current or future revenue generation. Liabilities are recorded when site restoration and 
environmental remediation, cleanup and other obligations are either known or considered probable and can be reasonably estimated. 
Such estimates are undiscounted and require judgment with respect to costs, time frame and extent of required remedial and clean-
up activities and are subject to periodic adjustments based on currently available information. Recoveries of environmental costs 
through insurance, indemnification arrangements or other sources are included in other assets to the extent such recoveries are 
considered probable. 

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.

Income Taxes:  Provisions for income taxes include deferred taxes resulting from temporary differences in income for financial 
and tax purposes, using the liability method of accounting for income taxes. The liability method requires the effect of tax rate 
changes on deferred income taxes to be reflected in the period in which the rate change was enacted. The liability method also 
requires that deferred tax assets be reduced by a valuation allowance unless it is more likely than not that the assets will be realized.

Potential interest and penalties related to income tax matters are recognized in income tax expense. We believe we have appropriate 
support for the income tax positions taken and to be taken on our income tax returns and that our accruals for tax liabilities are 
adequate for all open years based on an assessment of many factors, including past experience and interpretations of tax law applied 
to the facts of each matter.

New Accounting Pronouncements

Revenue Recognition
In May 2014, an accounting standard update (ASU 2014-09, “Revenue from Contracts with Customers”) was issued requiring 
revenue to be recognized when promised goods or services are transferred to customers in an amount that reflects the expected 
consideration for these goods or services. This standard has an effective date of January 1, 2018, and we are evaluating the impact 
of this standard.

Debt Issuance Costs
In April 2015, an accounting standard update (ASU 2015-03, “Simplifying the Presentation of Debt Issuance Costs”) was issued 
requiring that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from 
the carrying amount of a respective debt liability. We adopted this standard effective December 31, 2015 (on a retrospective basis) 
and  have  recast  our  December  31,  2014  consolidated balance  sheet. As  a  result,  $0.6  million  of  deferred debt  issuance  costs 
previously classified as non-current assets under “Intangibles and other assets” have been reclassified as a direct reduction to long-
term debt.

Deferred income taxes
In November 2015, an accounting standard update (ASU 2015-17, “Balance Sheet Classification of Deferred Taxes”) was issued 
requiring deferred tax liabilities and assets to be classified as noncurrent amounts. We adopted this standard effective December 
31, 2015 (on a retrospective basis) and have recast our December 31, 2014 consolidated balance sheet. As a result, $17.4 million 
of deferred income tax liabilities previously classified as current liabilities have been reclassified as noncurrent deferred income 
tax liabilities.

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

NOTE 2:  Holly Energy Partners

HEP, a consolidated VIE, is a publicly held master limited partnership that owns and operates logistic assets consisting of petroleum 
product and crude oil pipelines, terminals, tankage, loading rack facilities and refinery processing units that principally support 
our refining and marketing operations in the Mid-Continent, Southwest and Rocky Mountain regions of the United States and 
Alon USA, Inc.'s (“Alon”) refinery in Big Spring, Texas. Additionally, HEP owns a 75% interest in UNEV Pipeline, LLC (“UNEV”), 
the owner of pipeline running from Woods Cross, Utah to Las Vegas, Nevada (the “UNEV Pipeline”) and associated product 
terminals, a 50% interest in the Frontier Pipeline, and a 25% interest in the SLC Pipeline.

As of December 31, 2015, we owned a 39% interest in HEP, including the 2% general partner interest. As the general partner of 
HEP, we have the sole ability to direct the activities that most significantly impact HEP's financial performance, and therefore we 
consolidate HEP.

HEP has two primary customers (including us) and generates revenues by charging tariffs for transporting petroleum products and 
crude oil though its pipelines, by charging fees for terminalling refined products and other hydrocarbons, and storing and providing 
other services at its storage tanks and terminals. Under our long-term transportation agreements with HEP (discussed further 
below), we accounted for 81% of HEP’s total revenues for the year ended December 31, 2015. We do not provide financial or 
equity support through any liquidity arrangements and / or debt guarantees to HEP.

HEP has outstanding debt under a senior secured revolving credit agreement and its senior notes. With the exception of the assets 
of HEP Logistics Holdings, L.P., one of our wholly-owned subsidiaries and HEP’s general partner, HEP’s creditors have no recourse 
to our other assets. Any recourse to HEP’s general partner would be limited to the extent of HEP Logistics Holdings, L.P.’s assets, 
which other than its investment in HEP, are not significant. Furthermore, our creditors have no recourse to the assets of HEP and 
its consolidated subsidiaries. See Note 11 for a description of HEP’s debt obligations.

HEP has risk associated with its operations. If a major customer of HEP were to terminate its contracts or fail to meet desired 
shipping or throughput levels for an extended period of time, revenue would be reduced and HEP could suffer substantial losses 
to the extent that a new customer is not found. In the event that HEP incurs a loss, our operating results will reflect HEP’s loss, 
net of intercompany eliminations, to the extent of our ownership interest in HEP at that point in time.

Magellan Asset Exchange
On February 22, 2016, we obtained a 50% membership interest in Osage Pipe Line Company, LLC (“Osage”) in a non-monetary 
exchange  for  a  20-year  terminalling  services  agreement,  whereby,  a  subsidiary  of  Magellan  Midstream  Partners  (“Magellan 
Midstream”) will provide terminalling services for all of our products originating in Artesia, New Mexico that require terminalling 
in or through El Paso, Texas. Osage is the owner of the Osage pipeline, a 135-mile pipeline that transports crude oil from Cushing, 
Oklahoma to our El Dorado Refinery in Kansas and also has a connection to the Jayhawk pipeline that services the CHS refinery 
in McPherson, Kansas. The Osage pipeline is the primary pipeline that supplies our El Dorado Refinery with crude oil.

Concurrent with this transaction, we entered into a nonmonetary exchange with HEP; whereby, we received HEP’s El Paso terminal 
in exchange for our interest in Osage. Under this exchange, HEP also agreed to build two connections on its south products pipeline 
system that will permit us access to Magellan Midstream’s El Paso terminal. Effective upon the closing of this exchange, HEP is 
the named operator of the Osage pipeline and is working to transition into that role. 

El Dorado Asset Transaction
On November 1, 2015, HEP acquired from us newly constructed naphtha fractionation and hydrogen generation units at our El 
Dorado Refinery for cash consideration of $62.0 million. In connection with this transaction, we entered into 15-year tolling 
agreements containing minimum quarterly throughput commitments that provide minimum annualized payments to HEP of $15.3 
million.

Frontier Pipeline Interest Transaction
On August 31, 2015, HEP purchased a 50% interest in Frontier Pipeline Company, owner of the Frontier Pipeline, from an affiliate 
of Enbridge, Inc. for $55.0 million. Frontier Pipeline will continue to be operated by an affiliate of Plains All American Pipeline, 
L.P., which owns the remaining 50% interest. The 289-mile crude oil pipeline runs from Casper, Wyoming to Frontier Station, 
Utah and has a 72,000 BPD capacity. The Frontier Pipeline supplies Canadian and Rocky Mountain crudes to Salt Lake City area 
refiners through a connection to the SLC Pipeline. 

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Transportation Agreements
HEP serves our refineries under long-term pipeline, terminal, tankage and refinery processing unit throughput agreements expiring 
from 2019 through 2030. Under these agreements, we pay HEP fees to transport, store and process throughput volumes of refined 
products, crude oil and feedstocks on HEP's pipelines, terminals, tankage, loading rack facilities and refinery processing units that 
result in minimum annual payments to HEP, including UNEV (a consolidated subsidiary of HEP). Under these agreements, the 
agreed upon tariff rates are subject to annual tariff rate adjustments on July 1 at a rate based upon the percentage change in Producer 
Price Index or Federal Energy Regulatory Commission index. As of December 31, 2015, these agreements result in minimum 
annualized payments to HEP of $244.9 million.

Our transactions with HEP including the acquisitions discussed above and fees paid under our transportation agreements with 
HEP and UNEV are eliminated and have no impact on our consolidated financial statements. 

HEP's recent common unit issuances (2013 through present) are summarized below:

2013 Issuances
In March 2013, HEP closed on a public offering of 1,875,000 of its common units. Additionally, our wholly-owned subsidiary, 
HollyFrontier Holdings LLC, as a selling unitholder, closed on a public sale of 1,875,000 HEP common units held by it. HEP used 
net proceeds of $73.4 million to repay indebtedness incurred under its credit facility and for general partnership purposes.

As a result of this transaction and resulting HEP ownership changes, we adjusted additional capital and equity attributable to HEP's 
noncontrolling interest holders to effectively reallocate a portion of HEP's equity among its unitholders.

NOTE 3: 

Financial Instruments

Our financial instruments consist of cash and cash equivalents, investments in marketable securities, accounts receivable, accounts 
payable, debt and derivative instruments. The carrying amounts of cash and cash equivalents, accounts receivable and accounts 
payable approximate fair value. HEP's outstanding credit agreement borrowings also approximate fair value as interest rates are 
reset frequently at current interest rates.

Fair value measurements are derived using inputs (assumptions that market participants would use in pricing an asset or liability, 
including assumptions about risk). GAAP categorizes inputs used in fair value measurements into three broad levels as follows:

• 

• 

• 

(Level 1) Quoted prices in active markets for identical assets or liabilities.

(Level 2) Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and 
liabilities in active markets, similar assets and liabilities in markets that are not active or can be corroborated by observable 
market data.

(Level 3) Unobservable inputs that are supported by little or no market activity and that are significant to the fair value 
of the assets or liabilities. This includes valuation techniques that involve significant unobservable inputs.

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

The carrying amounts and estimated fair values of investments in marketable securities, derivative instruments and senior notes 
at December 31, 2015 and December 31, 2014 were as follows:

Financial Instrument

December 31, 2015

Assets:

Marketable securities
NYMEX futures contracts
Commodity price swaps
HEP interest rate swaps

Total assets

Liabilities:

Commodity price swaps
HEP senior notes
HEP interest rate swaps

Total liabilities

Financial Instrument

December 31, 2014

Assets:

Marketable securities
NYMEX futures contract
Commodity price swaps
HEP interest rate swaps

Total assets

Liabilities:

Commodity price swaps
HollyFrontier senior notes
HEP senior notes
HEP interest rate swaps

Total liabilities

Carrying
Amount

Fair Value

Level 1

Level 2

Level 3

Fair Value by Input Level

(In thousands)

144,019
3,469
37,097
304
184,889

98,930
296,752
114
395,796

$

$

$

$

144,019
3,469
37,097
304
184,889

98,930
295,500
114
394,544

$

$

$

$

— $

3,469
—
—
3,469

$

— $
—
—
— $

144,019
—
37,097
304
181,420

98,930
295,500
114
394,544

$

$

$

$

Carrying
Amount

Fair Value

Fair Value by Input Level

Level 1
(In thousands)

Level 2

Level 3

474,110
17,619
208,296
1,019
701,044

196,897
154,144
295,986
1,065
648,092

$

$

$

$

474,110
17,619
208,296
1,019
701,044

196,897
155,250
291,000
1,065
644,212

$

$

$

$

— $

17,619
—
—
17,619

$

— $
—
—
—
— $

474,110
—
208,296
1,019
683,425

196,897
155,250
291,000
1,065
644,212

$

$

$

$

—
—
—
—
—

—
—
—
—

—
—
—
—
—

—
—
—
—
—

$

$

$

$

$

$

$

$

Level 1 Financial Instruments
Our NYMEX futures contracts are exchange traded and are measured and recorded at fair value using quoted market prices, a 
Level 1 input. 

Level 2 Financial Instruments
Investments in marketable securities and derivative instruments consisting of commodity price swaps and HEP's interest rate swaps 
are measured and recorded at fair value using Level 2 inputs. The fair values of the commodity price and interest rate swap contracts 
are based on the net present value of expected future cash flows related to both variable and fixed rate legs of the respective swap 
agreements. The measurements are computed using market-based observable inputs, quoted forward commodity prices with respect 
to our commodity price swaps and the forward London Interbank Offered Rate (“LIBOR”) yield curve with respect to HEP's 
interest rate swaps. The fair value of the marketable securities and senior notes is based on values provided by a third party, which 
were derived using market quotes for similar type instruments, a Level 2 input. 

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Level 3 Financial Instruments
We at times have forward commodity sales and purchase contracts for which quoted forward market prices are not readily available. 
The forward rate used to value these forward sales and purchase contracts are derived using a projected forward rate using quoted 
market rates for similar products, adjusted for regional pricing and grade differentials, a Level 3 input.

The following table presents the changes in fair value of our Level 3 assets and liabilities (all related to derivative instruments) 
for the years ended December 31, 2015 and 2014:

Level 3 Financial Instruments

Liability balance at beginning of period

Change in fair value:

Recognized in other comprehensive income

Recognized in cost of products sold

Settlement date fair value of contractual maturities:

Recognized in sales and other revenues

Recognized in cost of products sold

Transfer out of Level 3

Liability balance at end of period

NOTE 4:  Earnings Per Share

Years Ended December 31,

2015

2014

(In thousands)
— $

3,852

—

(3,852)
—

—

— $

(35,318)

304,275

14,876

(88,326)
(21,848)
(173,659)
—

$

$

Basic earnings per share is calculated as net income attributable to HollyFrontier stockholders divided by the average number of 
shares of common stock outstanding. Diluted earnings per share assumes, when dilutive, the issuance of the net incremental shares 
from restricted shares and performance share units. The following is a reconciliation of the denominators of the basic and diluted 
per share computations for net income attributable to HollyFrontier stockholders:

Net income attributable to HollyFrontier stockholders

Participating securities' share in earnings

Net income attributable to common shares

Average number of shares of common stock outstanding
Effect of dilutive variable restricted shares and performance share units (1)
Average number of shares of common stock outstanding assuming

dilution

Basic earnings per share

Diluted earnings per share

$

$

$

$

2015

Years Ended December 31,
2014
(In thousands, except per share data)

2013

$

$

740,101

2,306

737,795

188,731

209

$

$

281,292

820

280,472

197,243

185

735,842

2,754

733,088

200,419

815

188,940

197,428

201,234

3.91

3.90

$

$

1.42

1.42

$

$

3.66

3.64

166

(1) Excludes anti-dilutive restricted and performance share units of:

89

356

NOTE 5: 

Stock-Based Compensation

As  of  December 31,  2015,  we  have  two  principal  share-based  compensation  plans  (collectively,  the  “Long-Term  Incentive 
Compensation Plan”). 

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

The compensation cost charged against income for these plans was $26.9 million, $26.1 million and $32.2 million for the years 
ended December 31, 2015, 2014 and 2013, respectively. Our accounting policy for the recognition of compensation expense for 
awards with pro-rata vesting is to expense the costs ratably over the vesting periods.

Additionally, HEP maintains a share-based compensation plan for Holly Logistic Services, L.L.C.'s non-employee directors and 
certain executives and employees. Compensation cost attributable to HEP’s share-based compensation plan was $3.5 million, $3.5 
million and $3.6 million for the years ended December 31, 2015, 2014 and 2013, respectively.

Restricted Stock and Restricted Stock Units
Under  our  Long-Term  Incentive  Compensation  Plan,  we  grant  certain  officers  and  other  key  employees  restricted  stock  and 
restricted stock unit awards with awards generally vesting over a period of one to three years. Restricted stock award recipients 
are generally entitled to all the rights of absolute ownership of the restricted shares from the date of grant including the right to 
vote the shares and to receive dividends. Upon vesting, restrictions on the restricted shares lapse at which time they convert to 
common shares. In addition, we grant non-employee directors restricted stock unit awards, which typically vest over a period of 
one year and are payable in stock. The fair value of each restricted stock and restricted stock unit award is measured based on the 
grant date market price of our common shares and is amortized over the respective vesting period.

A summary of restricted stock and restricted stock unit activity and changes during the year ended December 31, 2015 is presented 
below:

Restricted Stock and Restricted Stock Units

Grants

Weighted
Average Grant
Date Fair
Value

Aggregate
Intrinsic Value
($000)

Outstanding at January 1, 2015 (non-vested)
Granted
Vesting (transfer/conversion to common stock)
Forfeited
Outstanding at December 31, 2015 (non-vested)

669,777
447,544
(337,159)
(57,637)
722,525

$

$

44.12
49.92
42.03
48.40
48.35

$

27,950

For the years ended December 31, 2015, 2014 and 2013, restricted stock and restricted stock units vested having a grant date fair 
value of $14.2 million, $18.2 million and $16.2 million, respectively. For the years ended December 31, 2014 and 2013, we granted 
restricted stock and restricted stock units having a weighted average grant date fair value of $42.03 and $42.00, respectively. As 
of December 31, 2015, there was $23.7 million of total unrecognized compensation cost related to non-vested restricted stock and 
restricted stock unit grants. That cost is expected to be recognized over a weighted-average period of 1.6 years.

Performance Share Units
Under our Long-Term Incentive Compensation Plan, we grant certain officers and other key employees performance share units, 
which are payable in stock upon meeting certain criteria over the service period, and generally vest over a period of three years. 
Under the terms of our performance share unit grants, awards are subject to “financial performance” and “market performance” 
criteria. Financial performance is based on our financial performance compared to a peer group of independent refining companies, 
while market performance is based on the relative standing of total shareholder return achieved by HollyFrontier compared to 
peer group companies. The number of shares ultimately issued under these awards can range from zero to 200% of target award 
amounts. As of December 31, 2015, estimated share payouts for outstanding non-vested performance share unit awards averaged 
approximately 85% of target amounts.

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

A summary of performance share unit activity and changes during the year ended December 31, 2015 is presented below:

Performance Share Units

Outstanding at January 1, 2015 (non-vested)

Granted
Vesting and transfer of ownership to recipients

Forfeited

Outstanding at December 31, 2015 (non-vested)

Grants

725,054

209,589
(209,592)
(87,113)
637,938

For  the  year  ended  December 31,  2015,  we  issued  136,896  shares  of  common  stock,  representing  a  65%  payout  on  vested 
performance share units having a grant date fair value of $10.4 million. For the years ended December 31, 2014 and 2013, we 
issued common stock upon the vesting of the performance share units having a grant date fair value of $14.3 million and $11.6 
million, respectively. As of December 31, 2015, there was $16.4 million of total unrecognized compensation cost related to non-
vested performance share units having a grant date fair value of $45.86 per unit. That cost is expected to be recognized over a 
weighted-average period of 1.8 years.

NOTE 6:  Cash and Cash Equivalents and Investments in Marketable Securities

Our investment portfolio at December 31, 2015 consisted of cash, cash equivalents and investments in marketable securities.

We currently invest in marketable debt securities with the maximum maturity or put date of any individual issue generally not 
greater than one year from the date of purchase, which are usually held until maturity. All of these instruments are classified as 
available-for-sale. As a result, they are reported at fair value using quoted market prices. Interest income is recorded as earned. 
Unrealized gains and losses, net of related income taxes, are reported as a component of accumulated other comprehensive income 
(loss). Upon sale or maturity, realized gains on our marketable debt securities are recognized as interest income. These gains are 
computed based on the specific identification of the underlying cost of the securities, net of unrealized gains and losses previously 
reported in other comprehensive income. Unrealized gains and losses on our available-for-sale securities are due to changes in 
market prices and are considered temporary.

The following is a summary of our marketable securities:

December 31, 2015

Commercial paper
Corporate debt securities
State and political subdivisions debt securities

Total marketable securities

December 31, 2014

Certificates of deposit
Commercial paper
Corporate debt securities
State and political subdivisions debt securities

Total marketable securities

Amortized Cost

Gross
Unrealized
Gain

Gross
Unrealized Loss

Fair Value
(Net Carrying 
Amount)

(In thousands)

$

$

$

$

22,876
32,311
88,935
144,122

54,000
52,297
136,181
231,819
474,297

$

$

$

$

1
—
6
7

10
7
1
5
23

$

$

$

$

(2) $
(41)
(67)
(110) $

— $
(4)
(94)
(112)
(210) $

22,875
32,270
88,874
144,019

54,010
52,300
136,088
231,712
474,110

Interest income recognized on our marketable securities was $1.9 million and $2.2 million for the years ended December 31, 2015 
and 2014, respectively.

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

NOTE 7: 

Inventories

Inventory consists of the following components:

Crude oil
Other raw materials and unfinished products(1)
Finished products(2)
Lower of cost or market reserve
Process chemicals(3)
Repairs and maintenance supplies and other

Total inventory

December 31,

2015

2014

(In thousands)

$

518,922

$

214,832

603,568
(624,457)
4,477

124,527

581,592

204,467

531,523
(397,478)
4,028

110,999

$

841,869

$

1,035,131

(1)  Other raw materials and unfinished products include feedstocks and blendstocks, other than crude.
(2)  Finished products include gasolines, jet fuels, diesels, lubricants, asphalts, LPG’s and residual fuels.
(3)  Process chemicals include additives and other chemicals.

Crude  oil,  other  raw  materials,  unfinished  products  and  finished  products  are  carried  at  the  lower  of  cost  or  market.  Cost  is 
determined principally under the LIFO valuation method to reflect a better matching of cost and revenue. Ending inventory costs 
in excess of market values are written down to current replacement costs and charged to cost of products sold in the period recorded. 
In subsequent periods a new lower of cost or market reserve determination is made based on current conditions. We determine the 
need for a lower of cost or market inventory adjustment by evaluating inventories on an aggregate basis.

Inventories reflect lower of cost or market valuation reserves of $624.5 million and $397.5 million at December 31, 2015 and 
2014, respectively. During 2015, the December 31, 2014 market valuation reserve of $397.5 million was reversed as inventory 
quantities giving rise to the 2014 reserve were sold. A new reserve of $624.5 million was established at December 31, 2015 based 
on market conditions at that time. The effect of the change in the lower of cost or market reserve was a $227.0 million and $397.5 
million increase to cost of products sold for the years ended December 31, 2015 and 2014, respectively.

At December 31, 2015 and 2014, the LIFO value of inventory, net of the lower of cost or market reserve, was equal to current 
costs. The excess of current cost over the LIFO value of inventory was $273.0 million at December 31, 2013.

NOTE 8: 

Properties, Plants and Equipment

The components of properties, plants and equipment are as follows:

December 31,

2015

2014

(In thousands)

Land, buildings and improvements

$

305,712

$

Refining facilities

Pipelines and terminals

Transportation vehicles
Other fixed assets

Construction in progress

Accumulated depreciation

2,833,125

1,321,398

21,289

158,401

850,264

255,260

2,634,432

1,226,923

35,178

136,545

564,103

5,490,189
(1,374,527)
4,115,662

$

4,852,441
(1,181,902)
3,670,539

$

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

We capitalized interest attributable to construction projects of $5.5 million, $11.8 million and $12.1 million for the years ended 
December 31, 2015, 2014 and 2013, respectively.

Depreciation expense was $233.3 million, $261.8 million and $213.6 million for the years ended December 31, 2015, 2014 and 
2013, respectively. For the years ended December 31, 2015, 2014 and 2013, depreciation expense included $58.7 million, $58.1 
million and $62.3 million, respectively, attributable to HEP operations.

NOTE 9:  Goodwill

We performed our annual goodwill impairment testing as of July 1, 2015, which entailed an assessment of our reporting unit fair 
values relative to their respective carrying values that were derived using a combination of both income and market approaches. 
Our income approach utilizes the discounted future expected cash flows. Our market approach, which includes both the guideline 
public company and guideline transaction methods, utilizes pricing multiples derived from historical market transactions of other 
like-kind assets. Our discounted cash flows reflect estimates of future cash flows based on both historical and forward crack-
spreads, forecasted production levels, operating costs and capital expenditures. Based on our testing as of July 1, 2015, the fair 
value of our Cheyenne reporting unit exceeded its carrying cost by approximately 8%. The fair value of our El Dorado and HEP 
reporting units substantially exceeded their respective carrying values. As of December 31, 2015, there have been no impairments 
to goodwill.

Historically, the refining industry has experienced significant fluctuations in operating results over an extended business cycle 
including changes in prices of crude oil and refined products, changes in operating costs including natural gas and higher costs of 
complying with government regulations. It is reasonably possible that at some future downturn in refining operations that the 
goodwill related to our Cheyenne Refinery will be determined to be impaired. Such impairment charges could be material.

As of December 31, 2015, we had goodwill assigned to our refining and HEP segments of $2,042.8 million and $289.0 million, 
respectively. 

NOTE 10:  Environmental

We expensed $14.7 million, $28.5 million and $13.2 million for the years ended December 31, 2015, 2014 and 2013, respectively, 
for environmental remediation obligations. The accrued environmental liability reflected in our consolidated balance sheets was 
$98.1  million  and  $104.5  million  at  December 31,  2015  and  2014,  respectively,  of  which  $83.5  million  and  $81.8  million, 
respectively, were classified as other long-term liabilities. These accruals include remediation and monitoring costs expected to 
be incurred over an extended period of time (up to 30 years for certain projects). The amount of our accrued liability could increase 
in the future when the results of ongoing investigations become known, are considered probable and can be reasonably estimated.
NOTE 11:  Debt

HollyFrontier Credit Agreement
We have a $1 billion senior unsecured revolving credit facility maturing in July 2019 (the “HollyFrontier Credit Agreement”) 
which may be used for revolving credit loans and letters of credit from time to time and is available to fund general corporate 
purposes. Indebtedness under the HollyFrontier Credit Agreement is recourse to HollyFrontier. At December 31, 2015, we were 
in compliance with all covenants, had no outstanding borrowings and had outstanding letters of credit totaling $6.0 million under 
the HollyFrontier Credit Agreement. 

HEP Credit Agreement
HEP has an $850 million senior secured revolving credit facility that matures in November 2018 (the “HEP Credit Agreement”) 
and is available to fund capital expenditures, investments, acquisitions, distribution payments and working capital and for general 
partnership purposes. It is also available to fund letters of credit up to a $50 million sub-limit. At December 31, 2015, HEP was 
in compliance with all of its covenants, had outstanding borrowings of $712.0 million and no outstanding letters of credit under 
the HEP Credit Agreement.

Indebtedness  under  the  HEP  Credit Agreement  bears  interest,  at  HEP's  option,  at  either  a  reference  rate  announced  by  the 
administrative agent plus an applicable margin or at a rate equal to LIBOR plus an applicable margin. In each case, the applicable 
margin is based upon the ratio of HEP’s funded debt to earnings before interest, taxes, depreciation and amortization (as defined 

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

in the HEP Credit Agreement). The weighted average interest rates in effect on HEP’s Credit Agreement borrowings were 2.572% 
and 2.152% at December 31, 2015 and 2014, respectively. 

HEP’s obligations under the HEP Credit Agreement are collateralized by substantially all of HEP’s assets. Indebtedness under the 
HEP Credit Agreement involves recourse to HEP Logistics Holdings, L.P., its general partner, and is guaranteed by HEP’s wholly-
owned subsidiaries. Any recourse to the general partner would be limited to the extent of HEP Logistics Holdings, L.P.’s assets, 
which other than its investment in HEP, are not significant. HEP’s creditors have no recourse to our other assets. Furthermore, our 
creditors have no recourse to the assets of HEP and its consolidated subsidiaries.

HollyFrontier Senior Notes
In June 2015, we redeemed our $150.0 million aggregate principal amount of 6.875% senior notes maturing November 2018 at a 
redemption cost of $155.2 million at which time we recognized a $1.4 million early extinguishment loss consisting of a $5.2 million 
debt redemption premium, net of an unamortized premium of $3.8 million.

In  June  2013,  we  redeemed  our  $286.8  million  aggregate  principal  amount  of  9.875%  senior  notes  maturing  June  2017  at  a 
redemption cost of $301.0 million, at which time we recognized a $22.1 million early extinguishment loss consisting of a $14.2 
million debt redemption premium and an unamortized discount of $7.9 million.

HollyFrontier Financing Obligation
We have a financing obligation that relates to a sale and lease-back of certain crude oil tankage that we sold to an affiliate of Plains 
All American Pipeline, L.P. (“Plains”) in October 2009 for $40.0 million. Monthly lease payments are recorded as a reduction in 
principal over the 15-year lease term ending in 2024.

HEP Senior Notes
HEP’s 6.5% senior notes ($300 million aggregate principal amount maturing March 2020) (the “HEP Senior Notes”) are unsecured 
and impose certain restrictive covenants, including limitations on HEP’s ability to incur additional indebtedness, make investments, 
sell assets, incur certain liens, pay distributions, enter into transactions with affiliates, and enter into mergers. At any time when 
the HEP Senior Notes are rated investment grade by both Moody’s and Standard & Poor’s and no default or event of default exists, 
HEP will not be subject to many of the foregoing covenants. Additionally, HEP has certain redemption rights under the HEP Senior 
Notes. 

In March 2014, HEP redeemed its $150.0 million aggregate principal amount of 8.25% senior notes maturing March 2018 at a 
redemption cost of $156.2 million, at which time HEP recognized a $7.7 million early extinguishment loss consisting of a $6.2 
million debt redemption premium and unamortized discount and financing cost of $1.5 million. HEP funded the redemption with 
borrowings under the HEP Credit Agreement.

Indebtedness under the HEP Senior Notes involves recourse to HEP Logistics Holdings, L.P., its general partner, and is guaranteed 
by HEP’s wholly-owned subsidiaries. However, any recourse to the general partner would be limited to the extent of HEP Logistics 
Holdings, L.P.’s assets, which other than its investment in HEP, are not significant. HEP’s creditors have no recourse to our other 
assets. Furthermore, our creditors have no recourse to the assets of HEP and its consolidated subsidiaries.

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

The carrying amounts of long-term debt are as follows:

6.875% Senior Notes
Principal
Unamortized premium

Financing Obligation

Total HollyFrontier long-term debt

HEP Credit Agreement

HEP 6.5% Senior Notes

Principal
Unamortized discount and debt issuance costs

Total HEP long-term debt

Total long-term debt

Principal maturities of long-term debt are as follows:

December 31,

2015

2014

(In thousands)

$

— $
—
—

31,288

31,288

712,000

300,000
(3,248)
296,752

1,008,752

150,000
4,144
154,144

33,167

187,311

571,000

300,000
(4,014)
295,986

866,986

$

1,040,040

$

1,054,297

Years Ending December 31,

(In thousands)

2016

2017

2018

2019

2020

Thereafter

Total

$

2,121

2,393

714,700

3,046

303,437

17,591

$

1,043,288

NOTE 12:  Derivative Instruments and Hedging Activities

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;
costs of crude oil and related grade differentials;
prices of refined products; and
our refining margins.

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Accounting Hedges
We have swap contracts serving as cash flow hedges against price risk on forecasted purchases of natural gas. We also have forward 
sales contracts that lock in the prices of future sales of refined product. Additionally, we had swap contracts serving as cash flow 
hedges against price risk on forecasted purchases of WTI crude oil and forecasted sales of refined product. These contracts have 
been designated as accounting hedges and are measured at fair value with offsetting adjustments (gains/losses) recorded directly 
to other comprehensive income. These fair value adjustments are later reclassified to earnings as the hedging instruments mature. 
On a quarterly basis, hedge ineffectiveness is measured by comparing the change in fair value of the swap contracts against the 
expected future cash inflows/outflows on the respective transaction being hedged. Any hedge ineffectiveness is also recognized 
in earnings.

The following table presents the pre-tax effect on other comprehensive income (“OCI”) and earnings due to fair value adjustments 
and maturities of commodity price swaps and forward sales under hedge accounting:

Year Ended December 31, 2015

Commodity price swaps

Change in fair value
Gain reclassified to earnings due to

settlements

Amortization of discontinued hedges

reclassified to earnings

Total

Year Ended December 31, 2014

Commodity price swaps

Change in fair value
Gain reclassified to earnings due to

settlements

Amortization of discontinued hedges

reclassified to earnings

Total

Year Ended December 31, 2013

Commodity price swaps

Change in fair value
Gain reclassified to earnings due to

settlements

Amortization of discontinued hedges

reclassified to earnings

Total

Unrealized
Gain (Loss)
Recognized in
OCI

Gain (Loss) Recognized in
Earnings Due to Settlements
Amount
Location

Gain (Loss) Attributable to
Hedge Ineffectiveness
Recognized in Earnings

Location

Amount

$

$

$

$

$

$

Sales and other
revenues
Cost of products
sold
Operating
expenses

Sales and other
revenues
Cost of products
sold
Operating
expenses

Sales and other
revenues
Cost of products
sold
Operating
expenses

(3,983)

(49,592)

1,080
(52,495)

107,518

(52,884)

1,080
55,714

(8,808)

(16,410)

900
(24,318)

$

$

$

$

$

$

(In thousands)

Sales and other
revenues
Cost of products
sold
Operating
expenses

245,819

(179,700)

(17,607)
48,512

Sales and other
revenues
Cost of products
sold
Operating
expenses

Sales and other
revenues
Cost of products
sold

88,326

(37,313)

791
51,804

(20,060)

38,949

(3,379)
15,510

$

$

$

$

$

$

(274)

4,376

547
4,649

274

(4,377)

(547)
(4,650)

45

515
560

As of December 31, 2015, we have the following notional contract volumes related to outstanding derivative instruments serving 
as cash flow hedges against price risk on forecasted transactions:

Derivative instruments

Notional Contract Volumes
by Year of Maturity

Total
Outstanding
Notional

2016

2017

Unit of
Measure

Natural gas price swaps - long

19,200,000

9,600,000

9,600,000 MMBTU

Forward gasoline and diesel contracts - long

Forward gasoline and diesel contracts - short

Physical crude contracts - short

525,000

625,000

38,000

— Barrels

— Barrels

— Barrels

525,000

625,000

38,000

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

In 2013, we dedesignated certain commodity price swaps (long positions) that previously received hedge accounting treatment. 
These contracts now serve as economic hedges against price risk on forecasted natural gas purchases totaling 19,200,000 MMBTU's 
to be purchased ratably through 2017. As of December 31, 2015, we have an unrealized loss of $2.2 million classified in accumulated 
other comprehensive loss that relates to the application of hedge accounting prior to dedesignation that is amortized as a charge 
to operating expenses as the contracts mature.

Economic Hedges
We also have swap contracts that serve as economic hedges (derivatives used for risk management, but not designated as accounting 
hedges) to fix our purchase price on forecasted purchases of WTI crude oil, and to lock in the basis spread differentials on forecasted 
purchases of crude oil and natural gas. Also, we have NYMEX futures contracts to lock in prices on forecasted purchases of 
inventory. These contracts are measured at fair value with offsetting adjustments (gains/losses) recorded directly to income.

The following table presents the pre-tax effect on income due to maturities and fair value adjustments of our economic hedges:

Location of Gain (Loss) Recognized in Income

2015

Years Ended December 31,

2014
(In thousands)

2013

Cost of products sold

Operating expenses

Total

$

$

48,082

(12,003)

36,079

$

$

68,509

(185)

68,324

$

$

20,751

(5,250)

15,501

As of December 31, 2015, we have the following notional contract volumes related to our outstanding derivative contracts serving 
as economic hedges:

Derivative Instrument

Notional Contract Volumes
by Year of Maturity

Total
Outstanding
Notional

2016

2017

Unit of
Measure

Crude price swaps (basis spread) - long

11,712,000

11,712,000

— Barrels

Natural gas price swaps (basis spread) - long

20,616,000

10,308,000

10,308,000 MMBTU

Natural gas price swaps - long

Natural gas price swaps - short

NYMEX futures (WTI) - short

19,200,000

9,600,000

9,600,000 MMBTU

19,200,000

9,600,000

9,600,000 MMBTU

1,840,000

1,840,000

— Barrels

Interest Rate Risk Management
HEP uses interest rate swaps to manage its exposure to interest rate risk.

As of December 31, 2015, HEP had three interest rate swap contracts that hedge its exposure to the cash flow risk caused by the 
effects of LIBOR changes on $305.0 million in credit agreement advances. The first interest rate swap effectively converts $155.0 
million  of  LIBOR  based  debt  to  fixed  rate  debt  having  an  interest  rate  of  0.99%  plus  an  applicable  margin  of  2.25%  as  of 
December 31, 2015, which equaled an effective interest rate of 3.24%. This swap matures in February 2016. HEP has two additional 
interest rate swaps with identical terms which effectively convert $150.0 million of LIBOR based debt to fixed rate debt having 
an interest rate of 0.74% plus an applicable margin of 2.25% as of December 31, 2015, which equaled an effective interest rate of 
2.99%. Both of these swap contracts mature in July 2017. All of these swap contracts have been designated as cash flow hedges. 
To date, there has been no ineffectiveness on these cash flow hedges.

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

The following table presents the pre-tax effect on other comprehensive income and earnings due to fair value adjustments and 
maturities of HEP's interest rate swaps under hedge accounting:

Year Ended December 31, 2015

Interest rate swaps

Change in fair value
Loss reclassified to earnings due to settlements

Total

Year Ended December 31, 2014

Interest rate swaps

Change in fair value
Loss reclassified to earnings due to settlements

Total

Year Ended December 31, 2013

Interest rate swaps

Change in fair value
Loss reclassified to earnings due to settlements
Amortization of discontinued hedge reclassified to earnings

Total

Unrealized Gain
(Loss)
Recognized in
OCI

Loss Recognized in Earnings Due to
Settlements

Location
(In thousands)

Amount

$

$

$

$

$

$

(1,864)
2,100
236

(2,104)
2,202
98

1,194
2,092
849
4,135

Interest expense

Interest expense

Interest expense

$
$

$
$

$
$

(2,100)
(2,100)

(2,202)
(2,202)

(2,941)
(2,941)

The following table presents the fair value and balance sheet locations of our outstanding derivative instruments. These amounts 
are presented on a gross basis with offsetting balances that reconcile to a net asset or liability position in our consolidated balance 
sheets. We present on a net basis to reflect the net settlement of these positions in accordance with provisions of our master netting 
arrangements.

Derivatives in Net Asset Position

Derivatives in Net Liability Position

Gross
Liabilities
Offset in
Balance Sheet

Gross Assets

Net Assets
Recognized in
Balance Sheet

Gross
Liabilities

Gross Assets
Offset in
Balance Sheet

(In thousands)

Net
Liabilities
Recognized in
Balance Sheet

December 31, 2015
Derivatives designated as cash flow hedging instruments:

Commodity price swap

contracts

Interest rate swap contracts

$

$

— $
304
304

$

Derivatives not designated as cash flow hedging instruments:

Commodity price swap

contracts

NYMEX futures contracts

$

$

— $

3,469
3,469

$

Total net balance

Balance sheet classification:

Prepayment and other
Intangibles and other

— $
304
304

$

— $

$

3,469
3,469

3,773

3,469
304
3,773

38,755
114
38,869

60,196
—
60,196

$

$

$

$

— $
—
— $

(37,118) $
—
(37,118) $

Accrued liabilities
Other long-term liabilities

$

$

$

38,755
114
38,869

23,078
—
23,078

61,947

36,976
24,971
61,947

— $
—
— $

— $
—
— $

$

$

$

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Derivatives in Net Asset Position

Derivatives in Net Liability Position

Gross
Liabilities
Offset in
Balance Sheet

Gross Assets

Net Assets
Recognized in
Balance Sheet

Gross
Liabilities

Gross Assets
Offset in
Balance Sheet

(In thousands)

Net
Liabilities
Recognized in
Balance Sheet

December 31, 2014
Derivatives designated as cash flow hedging instruments:

Commodity price swap

contracts

Interest rate swap contracts

$

$

173,658
1,019
174,677

$

$

(142,115) $
—
(142,115) $

Derivatives not designated as cash flow hedging instruments:

Commodity price swap

contracts

NYMEX futures contracts

$

$

17,630
17,619
35,249

$

$

(12,942) $
—
(12,942) $

Total net balance

Balance sheet classification:

Prepayment and other
Intangibles and other

$

$

$

$

$

$

$

31,543
1,019
32,562

4,688
17,619
22,307

54,869

53,850
1,019
54,869

21,441
1,065
22,506

20,398
—
20,398

$

$

$

$

— $
—
— $

(17,007) $
—
(17,007) $

Other long-term liabilities

$

$
$

21,441
1,065
22,506

3,391
—
3,391

25,897

25,897
25,897

At December 31, 2015, we had a pre-tax net unrealized loss of $40.9 million classified in accumulated other comprehensive loss 
that relates to all accounting hedges having contractual maturities through 2017. Assuming commodity prices and interest rates 
remain unchanged, an unrealized loss of $20.9 million will be effectively transferred from accumulated other comprehensive loss 
into the statement of income as the hedging instruments contractually mature over the next twelve-month period.

NOTE 13:  Income Taxes

The provision for income taxes is comprised of the following:

Current

Federal
State
Deferred
Federal
State

2015

Years Ended December 31,
2014
(In thousands)

2013

$

$

480,446
71,750

(127,714)
(18,422)
406,060

$

$

294,509
40,325

(168,756)
(24,906)
141,172

$

$

270,024
7,148

94,896
19,508
391,576

79

 
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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

The statutory federal income tax rate applied to pre-tax book income reconciles to income tax expense as follows:

Tax computed at statutory rate
State income taxes, net of federal tax benefit
Domestic production activities deduction
Noncontrolling interest in net income
Uncertain tax positions
Other

2015

Years Ended December 31,
2014
(In thousands)

2013

$

$

422,999
40,385
(35,200)
(24,155)
—
2,031
406,060

$

$

163,625
13,641
(20,998)
(17,431)
—
2,335
141,172

$

$

405,790
21,363
(22,101)
(12,378)
(193)
(905)
391,576

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities 
for financial reporting purposes and the amounts used for income tax purposes. Our deferred income tax assets and liabilities as 
of December 31, 2015 and 2014 are as follows:

Assets

December 31, 2015
Liabilities
(In thousands)

Total

Deferred income taxes

Properties, plants and equipment (due primarily to tax in
excess of book depreciation)
Accrued employee benefits
Accrued post-retirement benefits
Accrued environmental costs
Hedging instruments
Inventory differences
Deferred turnaround costs
Net operating loss and tax credit carryforwards
Investment in HEP
Other

Total

Deferred income taxes

Properties, plants and equipment (due primarily to tax in
excess of book depreciation)
Accrued employee benefits
Accrued post-retirement benefits
Accrued environmental costs
Hedging instruments
Inventory differences
Deferred turnaround costs
Net operating loss and tax credit carryforwards
Investment in HEP
Other

Total

$

— $

22,355
11,518
42,517
21,815
175,614
—
8,033
—
—
281,852

$

(648,542) $

—
—
—
—
—
(104,944)
—
(23,429)
(2,843)
(779,758) $

(648,542)
22,355
11,518
42,517
21,815
175,614
(104,944)
8,033
(23,429)
(2,843)
(497,906)

Assets

December 31, 2014
Liabilities
(In thousands)

Total

— $

22,973
11,504
30,744
—
—
—
10,119
—
—
75,340

$

(581,017) $

—
—
—
(11,601)
(7,376)
(110,827)
—
(25,244)
(3,554)
(739,619) $

(581,017)
22,973
11,504
30,744
(11,601)
(7,376)
(110,827)
10,119
(25,244)
(3,554)
(664,279)

$

$

$

80

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

At December 31, 2015, we had a Kansas income tax credit of $6.6 million that is scheduled to be utilized in 2016 through 2019. 
This amount is reflected in non-current deferred tax assets.

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:

Balance at January 1
Additions for tax positions of prior years
Reductions for tax positions of prior years
Settlements
Balance at December 31

Years Ended December 31,

2014

2013

$

$

$

(In thousands)
9,006
—
—
(9,006)

— $

12,641
25,728
(5,092)
(24,271)
9,006

We had no unrecognized tax benefits at December 31, 2015 and 2014. We recognize interest and penalties relating to liabilities 
for unrecognized tax benefits as an element of tax expense.

We are subject to U.S. federal income tax, Oklahoma, Kansas, New Mexico, Iowa, Arizona, Utah, Colorado and Nebraska income 
tax and to income tax of multiple other state jurisdictions. We have substantially concluded all state and local income tax matters 
for tax years through 2012 and have materially concluded all U.S. federal income tax matters for tax years through December 31, 
2013. 

NOTE 14:  Stockholders' Equity

Shares of our common stock outstanding and activity for the years ended December 31, 2015, 2014 and 2013 are presented below:

Common shares outstanding at January 1
Issuance of restricted stock, excluding restricted stock with
performance feature
Vesting of performance units
Vesting of restricted stock with performance feature
Forfeitures of restricted stock
Purchase of treasury stock (1)
Common shares outstanding at December 31

Years Ended December 31,
2014

2013

2015

196,086,090

198,830,351

203,551,496

447,534
136,896
43,774
(51,332)
(16,428,574)
180,234,388

376,622
416,111
77,430
(76,107)
(3,538,317)
196,086,090

292,855
210,819
15,141
(15,794)
(5,224,166)
198,830,351

(1)  Includes 151,967, 279,680 and 235,922 shares, respectively, withheld under the terms of stock-based compensation agreements to 
provide funds for the payment of payroll and income taxes due at the vesting of share-based awards, as well as other stock repurchases 
under separate authority from our Board of Directors.

In May 2015, our Board of Directors approved a $1 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 December 31, 2015, we had remaining authorization 
to repurchase up to $308.2 million 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.

During the years ended December 31, 2015, 2014 and 2013, we withheld shares of our common stock from certain employees in 
the amounts of $6.2 million, $11.4 million and $11.3 million, respectively. These withholdings were made under the terms of 
restricted stock and performance share unit agreements upon vesting, at which time, we concurrently made cash payments to fund 
payroll and income taxes on behalf of officers and employees who elected to have shares withheld from vested amounts to pay 
such taxes.

81

 
 
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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

NOTE 15:  Other Comprehensive Income (Loss)

The components and allocated tax effects of other comprehensive income (loss) are as follows:

Year Ended December 31, 2015
Net unrealized gain on marketable securities
Net unrealized loss on hedging instruments
Net change in pension and other post-retirement benefit obligations
Other comprehensive loss
Less other comprehensive income attributable to noncontrolling interest
Other comprehensive loss attributable to HollyFrontier stockholders

Year Ended December 31, 2014
Net unrealized loss on marketable securities
Net unrealized gain on hedging instruments
Net change in pension and other post-retirement benefit obligations
Other comprehensive income
Less other comprehensive income attributable to noncontrolling interest
Other comprehensive income attributable to HollyFrontier stockholders

Year Ended December 31, 2013
Net unrealized gain on marketable securities
Net unrealized loss on hedging instruments
Net change in pension and other post-retirement benefit obligations
Other comprehensive income
Less other comprehensive income attributable to noncontrolling interest
Other comprehensive income attributable to HollyFrontier stockholders

Before-Tax

Tax Expense
(Benefit)
(In thousands)

After-Tax

$

$

$

$

$

$

$

38
(52,259)
79
(52,142)
144
(52,286) $

$

14
(20,282)
31
(20,237)
—
(20,237) $

(157) $

(62) $

55,812
(11,425)
44,230
60
44,170

34
(20,183)
37,593
17,444
2,315
15,129

$

$

$

21,583
(4,423)
17,098
—
17,098

17
(8,669)
14,534
5,882
—
5,882

$

$

$

24
(31,977)
48
(31,905)
144
(32,049)

(95)
34,229
(7,002)
27,132
60
27,072

17
(11,514)
23,059
11,562
2,315
9,247

82

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

The following table presents the income statement line item effects for reclassifications out of accumulated other comprehensive 
income (“AOCI”):

AOCI Component

Gain (Loss) Reclassified From AOCI

Income Statement Line Item

Marketable securities

$

Years Ended December 31,

2013

$

2015

2014
(In thousands)
4
—
4
2
2

(51) $
42
(9)
(3)
(6)

39
Interest income
— Gain on sale of assets
39
15
24 Net of tax

Income tax expense (benefit)

Hedging instruments:

Commodity price swaps

Interest rate swaps

Pension and other post-retirement
benefit obligations:
Pension obligation

Post-retirement healthcare
obligation

Retirement restoration plan

245,819
(179,700)
(17,607)
(2,100)
46,412
18,454
27,958
1,273
29,231

—
—
—
—
—
—

271
2,681
347
3,299
1,277
2,022

(20)
(8)
(12)

88,326
(37,313)
791
(2,202)
49,602
19,712
29,890
1,335
31,225

—
—
—
—
—
—

482
3,366
448
4,296
1,663
2,633

(920)
(356)
(564)

Interest expense

(20,060) Sales and other revenues
38,949 Cost of products sold
(3,379) Operating expenses
(2,941)
12,569
5,554
7,015 Net of tax
1,783 Noncontrolling interest
8,798 Net of tax and noncontrolling interest

Income tax expense

(3,226) Cost of products sold
(30,127) Operating expenses
(4,236) General and administrative expenses
(37,589)
(14,547)
(23,042) Net of tax

Income tax benefit

646 Cost of products sold

2,868 Operating expenses

526 General and administrative expenses

4,040
1,563
2,477 Net of tax

Income tax expense

(111) General and administrative expenses
(43)
(68) Net of tax

Income tax benefit

Total reclassifications for the period

$

31,235

$

33,296

$

(11,811)

Accumulated other comprehensive income in the equity section of our consolidated balance sheets includes:

Unrealized gain on post-retirement benefit obligations
Unrealized loss on marketable securities
Unrealized gain (loss) on hedging instruments, net of noncontrolling interest
Accumulated other comprehensive income (loss)

December 31,

2015

2014

$

(In thousands)
20,737
(61)
(24,831)
(4,155) $

20,689
(85)
7,290
27,894

$

$

83

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

NOTE 16:  Retirement Plans

Post-retirement Healthcare Plans
We provide post-retirement medical benefits to certain eligible employees. These plans are unfunded and provide differing levels 
of  healthcare  benefits  dependent  upon  hire  date  and  work  location.  Not  all  of  our  employees  are  covered  by  these  plans  at 
December 31, 2015.

The following table sets forth the changes in the benefit obligation and plan assets of our post-retirement healthcare plans for the 
years ended December 31, 2015 and 2014:

Change in plans' benefit obligation

Post-retirement plans' benefit obligation - beginning of year
Service cost
Interest cost
Participant contributions
Amendments
Benefits paid
Actuarial loss (gain)
Post-retirement plans' benefit obligation - end of year

Change in plan assets

Fair value of plan assets - beginning of year
Employer contributions
Participant contributions
Benefits paid
Fair value of plan assets - end of year

Funded status

Under-funded balance

Amounts recognized in consolidated balance sheets

Accrued post-retirement liability

Amounts recognized in accumulated other comprehensive income (loss)

Cumulative actuarial loss
Prior service credit
Total

Years Ended December 31,

2015

2014

(In thousands)

23,633
1,694
819
593
—
(2,260)
(3,278)
21,201

$

$

— $

1,667
593
(2,260)

— $

15,715
895
638
573
3,383
(1,533)
3,962
23,633

—
960
573
(1,533)
—

(21,201) $

(23,633)

(21,201) $

(23,633)

(1,613) $
35,937
34,324

$

(5,074)
39,419
34,345

$

$

$

$

$

$

$

$

Benefit payments, which reflect expected future service, are expected to be paid as follows: $2.1 million in 2016; $1.8 million in 
2017; $1.9 million in 2018; $1.8 million in 2019; $1.9 million in 2020; and $9.2 million in 2021 through 2025.

The weighted average assumptions used to determine end of period benefit obligations:

Discount rate
Current health care trend rate
Ultimate health care trend rate
Year rate reaches ultimate trend rate

84

December 31,

2015

2014

3.90%
8.00%
5.00%
2041

3.60%
8.00%
5.00%
2042

Table of Contents

HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Net periodic post-retirement credit consisted of the following components:

Service cost – benefit earned during the year
Interest cost on projected benefit obligations
Amortization of prior service credit
Amortization of net loss
Loss on settlement
Net periodic post-retirement credit

2015

Years Ended December 31,
2014
(In thousands)

2013

$

$

$

1,694
819
(3,482)
183
—
(786) $

$

895
638
(4,296)
—
—
(2,763) $

1,112
665
(5,896)
130
1,726
(2,263)

Prior service credits are amortized over the average remaining effective period to obtain full benefit eligibility for participants.

Assumed health care cost trend rates have an effect on the amounts reported for the post-retirement health care benefit plans. The 
weighted average assumptions used to determine net periodic benefit expense follow:

Discount rate
Current health care trend rate
Ultimate health care trend rate
Year rate reaches ultimate trend rate

The effect of a 1% change in health care cost trend rates is as follows:

Service cost
Interest cost
Year-end accumulated post-retirement benefit obligation

Years Ended December 31,
2014

2013

2015

3.60%
8.00%
5.00%
2042

4.25%
8.00%
5.00%
2045

3.45%
8.10%
5.00%
2023

1% Point
Increase

1% Point
Decrease

$
$
$

(In thousands)

268
68
1,443

$
$
$

(222)
(58)
(1,254)

Pension Plan
In 2013, we terminated the HollyFrontier Corporation Pension Plan (the "Plan"), a non-contributory defined benefit retirement 
plan that covered certain employees. In June 2013, we made contributions of $22.7 million to the Plan, which was sufficient for 
the Plan to settle its obligations to all participants including the premium paid to the non-participating annuity provider. In 2013, 
we recognized a pre-tax pension settlement charge of $39.5 million, of which $37.6 million was reclassified out of accumulated 
other comprehensive income, representing the irrevocable portion of our obligation. Net periodic pension expense was $42.6 
million for the year ended December 31, 2013.

Additionally, we had a program that provided transition benefit payments to certain employees that participated in a previously 
terminated defined benefit plan. The program extended through 2014 and provided payments subsequent to year-end provided the 
employee was employed by us on the last day of each year. The payments were based on each employee's years of service and 
eligible salary. Transition benefit costs under this program were $10.8 million and $12.5 million for the years ended December 31, 
2014 and 2013, respectively. In March 2015, we paid all remaining amounts owed to plan participants of $11.0 million.

85

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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Retirement Restoration Plan
We have an unfunded retirement restoration plan that provides for additional payments from us so that total retirement plan benefits 
for certain executives will be maintained at the levels provided in the retirement plan before the application of Internal Revenue 
Code limitations. We expensed $0.1 million, $1.2 million and $0.4 million for the years ended December 31, 2015, 2014 and 2013, 
respectively, in connection with this plan. The accrued liability reflected in the consolidated balance sheets was $2.8 million and 
$3.0 million at December 31, 2015 and 2014, respectively. As of December 31, 2015, the projected benefit obligation under this 
plan was $2.8 million. Annual benefit payments of $0.2 million are expected to be paid through 2025, which reflect expected future 
service.

Defined Contribution Plans
We have a defined contribution “401(k)” plan that covers substantially all employees. Our contributions are based on an employee's 
eligible compensation and years of service. We also partially match the employee's contributions. We expensed $17.2 million, 
$16.1 million and $15.5 million for the years ended December 31, 2015, 2014 and 2013, respectively, in connection with these 
plans.

NOTE 17:  Lease Commitments 

We lease certain office and storage facilities, rail cars and other equipment under long-term operating leases, most of which contain 
renewal options. At December 31, 2015, the minimum future rental commitments under operating leases having non-cancellable 
lease terms in excess of one year are as follows:

2016
2017
2018
2019
2020
Thereafter
Total

(In thousands)

70,512
65,807
62,364
58,664
57,047
221,589
535,983

$

$

Rental expense charged to operations was $107.3 million, $89.8 million and $72.6 million for the years ended December 31, 2015, 
2014 and 2013, respectively. For the years ended December 31, 2015, 2014 and 2013, rental expense included $8.9 million, $8.0 
million and $8.3 million, respectively, in costs attributable to the HEP operations.

NOTE 18:  Contingencies and Contractual Commitments 

We are a party to various litigation and legal proceedings which we believe, based on advice of counsel, will not either individually 
or in the aggregate have a materially adverse effect on our financial condition, results of operations or cash flows.

Contractual Commitments
We have various long-term agreements (entered in the normal course of business) to purchase crude oil, natural gas, feedstocks 
and  other  resources  to  ensure  we  have  adequate  supplies  to  operate  our  refineries. The  substantial  majority  of  our  purchase 
obligations are based on market prices or rates. These contracts expire in 2016 through 2030.

We also have long-term agreements with third parties for the transportation and storage of crude oil, natural gas and feedstocks 
to our refineries and for terminal and storage services that expire in 2016 through 2033. At December 31, 2015, the minimum 
future transportation and storage fees under transportation agreements having terms in excess of one year are as follows:

86

                                                 
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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

2016

2017

2018

2019

2020

Thereafter

Total

(In thousands)

$

$

113,914

102,613

84,026

75,514

65,444

548,010

989,521

Transportation and storage costs incurred under these agreements totaled $137.7 million, $118.0 million and $95.2 million for the 
years ended December 31, 2015, 2014 and 2013, respectively. These amounts do not include contractual commitments under our 
long-term  transportation  agreements  with  HEP,  as  all  transactions  with  HEP  are  eliminated  in  these  consolidated  financial 
statements.

NOTE 19:  Segment Information

Our operations are organized into two reportable segments, Refining and HEP. Our operations that are not included in the Refining 
and HEP segments are included in Corporate and Other. Intersegment transactions are eliminated in our consolidated financial 
statements and are included in Consolidations and Eliminations.

The Refining segment represents the operations of the El Dorado, Tulsa, Navajo, Cheyenne and Woods Cross Refineries and HFC 
Asphalt (aggregated as a reportable segment). Refining activities involve the purchase and refining of crude oil and wholesale and 
branded marketing of refined products, such as gasoline, diesel fuel and jet fuel. These petroleum products are primarily marketed 
in the Mid-Continent, Southwest and Rocky Mountain regions of the United States. Additionally, the Refining segment includes 
specialty lubricant products produced at our Tulsa Refineries that are marketed throughout North America and are distributed in 
Central and South America. HFC Asphalt operates various asphalt terminals in Arizona, New Mexico and Oklahoma.

The HEP segment  includes all of the operations of  HEP, which owns  and operates logistics and refinery assets  consisting of 
petroleum product and crude oil pipelines, terminals, tankage, loading rack facilities and processing units in the Mid-Continent, 
Southwest and Rocky Mountain regions of the United States. The HEP segment also includes a 75% ownership interest in UNEV 
(a consolidated subsidiary of HEP) and a 50% and 25% ownership interest in the Frontier Pipeline and the SLC Pipeline, respectively. 
Revenues from the HEP segment are earned through transactions with unaffiliated parties for pipeline transportation, rental and 
terminalling operations as well as revenues relating to pipeline transportation services provided for our refining operations. Due 
to certain basis differences, our reported amounts for the HEP segment may not agree to amounts reported in HEP’s periodic public 
filings.

The accounting policies for our segments are the same as those described in the summary of significant accounting policies (see 
Note 1).

87

                                                 
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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Year Ended December 31, 2015
Sales and other revenues
Depreciation and amortization
Income (loss) from operations
Capital expenditures
Total assets

Year Ended December 31, 2014
Sales and other revenues
Depreciation and amortization
Income (loss) from operations
Capital expenditures
Total assets

Year Ended December 31, 2013
Sales and other revenues
Depreciation and amortization
Income (loss) from operations
Capital expenditures
Total assets

Refining

HEP (1)

Corporate
and Other

Consolidations
and Eliminations

Consolidated
Total

(In thousands)

$
$
$
$
$

$
$
$
$
$

$
$
$
$
$

13,171,183
273,799
1,187,875
567,616
6,840,545

358,875
$
61,236
$
181,778
$
$
94,516
$ 1,569,089

19,706,225
293,871
491,106
435,598
6,927,126

332,626
$
60,548
$
156,453
$
$
109,693
$ 1,472,098

20,105,443
233,182
1,237,687
339,356
7,094,558

307,053
$
64,701
$
133,522
$
56,613
$
$ 1,412,931

$
$
$
$
$

$
$
$
$
$

$
$
$
$
$

663
$
$
11,944
(123,004) $
$
14,023
$
289,225

(292,801) $
(828) $
(2,296) $
— $
(310,560) $

13,237,920
346,151
1,244,353
676,155
8,388,299

$
2,103
$
9,790
(129,874) $
$
19,530
$
1,150,865

$
1,314
$
6,391
(123,030) $
$
29,158
$
1,881,121

(276,627) $
(828) $
(2,151) $
— $
(320,042) $

19,764,327
363,381
515,534
564,821
9,230,047

(253,250) $
(828) $
(2,105) $
— $
(332,847) $

20,160,560
303,446
1,246,074
425,127
10,055,763

(1)  HEP acquired newly constructed naphtha fractionation and hydrogen generation units at our El Dorado Refinery in November 
2015. As a result, we have recast our HEP segment information to include these assets and related capital expenditures that were 
previously presented under the Refining segment.

HEP  segment  revenues  from  external  customers  were  $66.7  million,  $57.3  million  and  $53.4  million  for  the  years  ended 
December 31, 2015, 2014 and 2013, respectively.

NOTE 20:  Supplemental Financial Information

Borrowings pursuant to the HollyFrontier Credit Agreement are recourse to the assets of HollyFrontier, but not HEP. Furthermore, 
borrowings under the HEP Credit Agreement are recourse to HEP, but not to the assets of HFC with the exception of HEP Logistics 
Holdings, L.P., HEP’s general partner. Other than its investment in HEP, the assets of the general partner are insignificant. 

The  following  condensed  financial  information  is  provided  for  HollyFrontier  Corporation  (on  a  standalone  basis,  before 
consolidation of HEP), and for HEP and its consolidated subsidiaries (on a standalone basis, exclusive of HFC). Due to certain 
basis differences, our reported amounts for HEP may not agree to amounts reported in HEP’s periodic public filings. 

88

 
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HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Condensed Consolidating Balance Sheet

December 31, 2015

ASSETS

Current assets:

Cash and cash equivalents

Marketable securities

Accounts receivable, net

Inventories

Prepayments and other

Total current assets

Properties, plants and equipment, net

Intangibles and other assets

Total assets

LIABILITIES AND EQUITY

Current liabilities:

Accounts payable

Income tax payable

Accrued liabilities

Total current liabilities

Long-term debt

Liability to HEP

Deferred income tax liabilities

Other long-term liabilities

Investment in HEP

Equity – HollyFrontier

Equity – noncontrolling interest

Total liabilities and equity

HollyFrontier
Corp. Before
Consolidation
of HEP

HEP Segment

Consolidations and
Eliminations

Consolidated

(In thousands)

$

51,520

$

15,013

$

144,019

355,020

839,897

48,288

1,438,744

3,270,804

2,410,879

—

41,075

1,972

3,082

61,142

1,090,373

417,574

— $

—

(44,117)

—

(7,704)

(51,821)

(245,515)

(3,881)

$

$

7,120,427

$

1,569,089

$

(301,217) $

738,024

$

22,583

$

(44,117) $

8,142

117,346

863,512

31,288

220,998

497,475

125,684

129,961

5,251,509

—

—

26,341

48,924

1,008,752

—

431

59,306

—

357,247

94,429

—

(7,704)

(51,821)

—

(220,998)

—

(5,025)

(129,961)

(355,341)

461,929

$

7,120,427

$

1,569,089

$

(301,217) $

66,533

144,019

351,978

841,869

43,666

1,448,065

4,115,662

2,824,572

8,388,299

716,490

8,142

135,983

860,615

1,040,040

—

497,906

179,965

—

5,253,415

556,358

8,388,299

89

Table of Contents

HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Condensed Consolidating Balance Sheet

December 31, 2014

ASSETS

Current assets:

Cash and cash equivalents

Marketable securities

Accounts receivable, net

Inventories

Income tax receivable

Prepayments and other

Total current assets

Properties, plants and equipment, net

Intangibles and other assets

Total assets

LIABILITIES AND EQUITY

Current liabilities:

Accounts payable

Income tax payable

Accrued liabilities

Total current liabilities

Long-term debt

Liability to HEP

Deferred income tax liabilities

Other long-term liabilities

Investment in HEP

Equity – HollyFrontier

Equity – noncontrolling interest

Total liabilities and equity

HollyFrontier
Corp. Before
Consolidation
of HEP

HEP Segment

Consolidations and
Eliminations

Consolidated

(In thousands)

$

565,155

$

2,830

$

474,110

588,407

1,033,191

11,719

109,928

2,782,510

2,867,941

2,418,926

—

40,129

1,940

—

2,443

47,342

1,062,430

362,326

— $

—

(38,631)

—

—

(8,223)

(46,854)

(259,832)

(4,742)

$

$

8,069,377

$

1,472,098

$

(311,428) $

1,125,146

$

21,623

$

(38,631) $

19,642

88,116

1,232,904

187,311

233,217

663,912

135,474

99,618

5,516,941

—

—

26,321

47,944

866,986

—

367

47,170

—

414,549

95,082

—

(8,223)

(46,854)

—

(233,217)

—

(5,886)

(99,618)

(407,906)

482,053

$

8,069,377

$

1,472,098

$

(311,428) $

567,985

474,110

589,905

1,035,131

11,719

104,148

2,782,998

3,670,539

2,776,510

9,230,047

1,108,138

19,642

106,214

1,233,994

1,054,297

—

664,279

176,758

—

5,523,584

577,135

9,230,047

90

Table of Contents

HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Condensed Consolidating Statement of Income and
Comprehensive Income

Year Ended December 31, 2015

Sales and other revenues

Operating costs and expenses:

Cost of products sold

Lower of cost or market valuation inventory

adjustment

Operating expenses

General and administrative

Depreciation and amortization

Total operating costs and expenses

Income from operations

Other income (expense):

Earnings (loss) of equity method investments

Interest income (expense)

Loss on early extinguishment of debt

Gain on sale of assets and other

Income before income taxes

Income tax provision

Net income

Less net income attributable to noncontrolling interest

Net income attributable to HollyFrontier stockholders

Comprehensive income attributable to HollyFrontier

stockholders

$

$

HollyFrontier
Corp. Before
Consolidation
of HEP

HEP Segment

Consolidations and
Eliminations

Consolidated

$

13,171,846

$

(In thousands)

358,875

$

(292,801) $

13,237,920

10,525,610

226,979

960,352

108,290

299,233

12,120,464

1,051,382

78,969

6,098

(1,370)

8,916

92,613

1,143,995

405,832

738,163

(30)

738,193

706,144

$

$

—

—

103,305

12,556

61,236

177,097

181,778

4,803

(36,892)

—

486

(31,603)

150,175

228

149,947

3,971

145,976

138,920

$

$

(286,392)

10,239,218

—

(3,284)

—

(14,318)

(303,994)

11,193

(87,510)

(9,285)

—

—

(96,795)

(85,602)

—

(85,602)

58,466

(144,068) $

226,979

1,060,373

120,846

346,151

11,993,567

1,244,353

(3,738)

(40,079)

(1,370)

9,402

(35,785)

1,208,568

406,060

802,508

62,407

740,101

(137,012) $

708,052

91

Table of Contents

HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Condensed Consolidating Statement of Income and
Comprehensive Income

Year Ended December 31, 2014

Sales and other revenues

Operating costs and expenses:

Cost of products sold

Lower of cost or market inventory valuation

adjustment

Operating expenses

General and administrative

Depreciation and amortization

Total operating costs and expenses

Income from operations

Other income (expense):

Earnings (loss) of equity method investments

Interest income (expense)

Loss on early extinguishment of debt

Gain on sale of assets and other

Income before income taxes

Income tax provision

Net income

Less net income attributable to noncontrolling interest

Net income attributable to HollyFrontier stockholders

Comprehensive income attributable to HollyFrontier

stockholders

$

$

HollyFrontier
Corp. Before
Consolidation
of HEP

HEP Segment

Consolidations and
Eliminations

Consolidated

$

19,708,328

$

(In thousands)

332,626

$

(276,627) $

19,764,327

17,500,601

397,478

1,041,571

103,785

317,149

19,360,584

347,744

65,375

6,221

—

866

72,462

420,206

140,937

279,269

(25)

279,294

306,366

$

$

—

—

104,801

10,824

60,548

176,173

156,453

2,987

(36,098)

(7,677)

—

(40,788)

115,665

235

115,430

8,288

107,142

107,181

$

$

(272,216)

17,228,385

—

(1,432)

—

(14,316)

(287,964)

11,337

(70,369)

(9,339)

—

—

(79,708)

(68,371)

—

(68,371)

36,773

(105,144) $

397,478

1,144,940

114,609

363,381

19,248,793

515,534

(2,007)

(39,216)

(7,677)

866

(48,034)

467,500

141,172

326,328

45,036

281,292

(105,183) $

308,364

92

Table of Contents

HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Condensed Consolidating Statement of Income and
Comprehensive Income

HollyFrontier
Corp. Before
Consolidation
of HEP

HEP Segment

Consolidations and
Eliminations

Consolidated

$

20,106,757

$

(In thousands)

307,053

$

(253,250) $

20,160,560

Year Ended December 31, 2013

Sales and other revenues

Operating costs and expenses:

Cost of products sold

Operating expenses

General and administrative

Depreciation and amortization

Total operating costs and expenses

Income from operations

Other income (expense):

Earnings (loss) of equity method investments

Interest expense

Loss on early extinguishment of debt

Income before income taxes

Income tax provision

Net income

Less net income attributable to noncontrolling interest

Net income attributable to HollyFrontier stockholders

Comprehensive income attributable to HollyFrontier

stockholders

$

$

17,641,119

995,194

116,214

253,062

19,005,589

1,101,168

52,288

(6,338)

(22,109)

23,841

1,125,009

391,243

733,766

—

733,766

743,013

$

$

—

97,081

11,749

64,701

173,531

133,522

2,826

(46,849)

—

(44,023)

89,499

333

89,166

6,632

82,534

84,354

$

$

(248,892)

(1,425)

—

(14,317)

(264,634)

11,384

(57,186)

(9,307)

—

(66,493)

(55,109)

—

(55,109)

25,349

(80,458) $

17,392,227

1,090,850

127,963

303,446

18,914,486

1,246,074

(2,072)

(62,494)

(22,109)

(86,675)

1,159,399

391,576

767,823

31,981

735,842

(82,278) $

745,089

93

Table of Contents

HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Condensed Consolidating Statement of Cash Flows

Year Ended December 31, 2015

HollyFrontier
Corp. Before
Consolidation
of HEP

Cash flows from operating activities

$

836,858

$

HEP Segment

Consolidations and
Eliminations

Consolidated

(In thousands)

233,188

$

(90,420) $

979,626

Cash flow from investing activities

Additions to properties, plants and equipment

Additions to properties, plants and equipment –   HEP

Purchase of equity method investment

Proceeds from sale of assets

Purchases of marketable securities

Sales and maturities of marketable securities

Cash flows from financing activities

Net borrowings under credit agreement – HEP

Redemption of senior notes - HFC

Purchase of treasury stock

Dividends

Distributions to noncontrolling interest

Distribution from HEP

Contribution from general partner

Other, net

Cash and cash equivalents

Increase (decrease) for the period

Beginning of period
End of period

(581,639)

—

—

17,985

(509,338)

839,513

(233,479)

—

(155,156)

(742,823)

(246,908)

—

62,000

(27,623)

(6,504)

(1,117,014)

(513,635)

565,155
51,520

$

$

—

(94,516)

(55,032)

1,279

—

—

(148,269)

141,000

—

—

—

(173,688)

(62,000)

27,623

(5,671)

(72,736)

12,183

2,830
15,013

$

—

—

—

—

—

—

—

—

—

—

—

90,420

—

—

—

90,420

—

—
— $

(581,639)

(94,516)

(55,032)

19,264

(509,338)

839,513

(381,748)

141,000

(155,156)

(742,823)

(246,908)

(83,268)

—

—

(12,175)

(1,099,330)

(501,452)

567,985
66,533

94

Table of Contents

HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Condensed Consolidating Statement of Cash Flows

Year Ended December 31, 2014

HollyFrontier
Corp. Before
Consolidation
of HEP

HEP Segment

Consolidations and
Eliminations

Consolidated

(In thousands)

Cash flows from operating activities

$

652,186

$

186,903

$

(80,493) $

758,596

Cash flows from investing activities:

Additions to properties, plants and equipment

Additions to properties, plants and equipment – HEP

Proceeds from sale of assets

Purchases of marketable securities

Sales and maturities of marketable securities

Other, net

Cash flows from financing activities:

Net borrowings under credit agreement – HEP

Redemption of senior notes - HEP

Purchase of treasury stock

Dividends

Distributions to noncontrolling interest

Contribution from general partner

Excess tax benefit from equity-based compensation

Other, net

Cash and cash equivalents

Increase (decrease) for the period:

Beginning of period

End of period

(455,128)

—

16,633

(1,025,602)

1,276,447

5,021

(182,629)

—

—

(158,847)

(647,197)

—

(29,734)

2,040

(4,415)

(838,153)

(368,596)

933,751

$

565,155

$

—

(109,693)

—

—

—

—

(109,693)

208,000

(156,188)

—

—

(158,695)

29,734

—

(3,583)

(80,732)

(3,522)

6,352

2,830

$

—

—

—

—

—

—

—

—

—

—

—

80,493

—

—

—

80,493

—

—

— $

(455,128)

(109,693)

16,633

(1,025,602)

1,276,447

5,021

(292,322)

208,000

(156,188)

(158,847)

(647,197)

(78,202)

—

2,040

(7,998)

(838,392)

(372,118)

940,103

567,985

95

 
Table of Contents

HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

Condensed Consolidating Statement of Cash Flows

Year Ended December 31, 2013

HollyFrontier
Corp. Before
Consolidation
of HEP

HEP Segment

Consolidations and
Eliminations

Consolidated

(In thousands)

Cash flows from operating activities

$

757,204

$

183,380

$

(71,410) $

869,174

Cash flows from investing activities:

Additions to properties, plants and equipment

Additions to properties, plants and equipment – HEP

Proceeds from sale of assets

Acquisition of trucking operations

Purchases of marketable securities

Sales and maturities of marketable securities

Other, net

Cash flows from financing activities:

Net borrowings under credit agreement – HEP

Redemptions of senior notes

Proceeds from sale of HEP common units

Proceeds from common unit offerings – HEP

Purchase of treasury stock

Contribution from general partner

Dividends

Distributions to noncontrolling interest

Excess tax benefit from equity-based compensation

Other, net

Cash and cash equivalents

Increase (decrease) for the period:

Beginning of period

End of period

(368,514)

—

5,071

(11,301)

(935,512)

846,143

(8,740)

(472,853)

—

(300,973)

73,444

—

(225,023)

(6,011)

(645,920)

—

2,562

(1,141)

(1,103,062)

(818,711)

1,752,462

$

933,751

$

—

(56,613)

2,731

—

—

—

—

(53,882)

(58,000)

—

—

73,444

—

6,011

—

(142,611)

—

(7,227)

(128,383)

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

71,410

—

—

(368,514)

(56,613)

7,802

(11,301)

(935,512)

846,143

(8,740)

(526,735)

(58,000)

(300,973)

73,444

73,444

(225,023)

—

(645,920)

(71,201)

2,562

(8,368)

71,410

(1,160,035)

1,115

5,237

6,352

$

—

—

— $

(817,596)

1,757,699

940,103

96

Table of Contents

HOLLYFRONTIER CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Continued

NOTE 21:  Significant Customers

All revenues are domestic revenues, except for sales of fuel oil for export into Mexico. We have two significant customers (Shell 
Oil and Sinclair), each of which has historically accounted for 10% or more of our annual revenues. Shell Oil accounted for 
$1,252.6 million (9%), $2,097.4 million (11%) and $1,830.5 million (9%) for the years ended December 31, 2015, 2014 and 2013, 
respectively, and Sinclair accounted for $1,104.9 million (8%), $2,018.8 million (10%) and $2,134.3 million (11%) of our revenues 
for the years ended December 31, 2015, 2014 and 2013, respectively. Our export sales were less than 3% of our revenues for the 
years ended December 31, 2015, 2014 and 2013.

NOTE 22:  Quarterly Information (Unaudited)

First
Quarter

Second
Quarter

Third
Quarter
(In thousands, except per share data)

Fourth
Quarter

Year

Year Ended December 31, 2015

Sales and other revenues
Operating costs and expenses
Income (loss) from operations (1)
Income (loss) before income taxes
Net income (loss) attributable to
HollyFrontier stockholders

Net income (loss) per share attributable to

HollyFrontier stockholders - basic

Net income (loss) per share attributable to
HollyFrontier stockholders - diluted

Dividends per common share
Average number of shares of common

stock outstanding:
Basic
Diluted

Year Ended December 31, 2014

Sales and other revenues
Operating costs and expenses
Income from operations (2)
Income before income taxes
Net income attributable to HollyFrontier

stockholders

Net income per share attributable to
HollyFrontier stockholders - basic
Net income per share attributable to

HollyFrontier stockholders - diluted

Dividends per common share
Average number of shares of common

stock outstanding:
Basic
Diluted

$ 3,006,626
$ 2,618,004
388,622
$
372,389
$

$ 3,701,912
$ 3,112,080
589,832
$
580,177
$

$ 3,585,823
$ 3,263,218
322,605
$
320,673
$

$ 2,943,559
$ 3,000,265
$
$

$ 13,237,920
$ 11,993,567
(56,706) $ 1,244,353
(64,671) $ 1,208,568

$

$

$
$

226,876

1.16

1.16
0.32

$

$

$
$

360,824

1.88

1.88
0.33

$

$

$
$

196,322

1.05

1.04
0.33

$

$

$
$

(43,921) $

740,101

(0.24) $

(0.24) $
$
0.33

3.91

3.90
1.31

195,069
195,121

191,355
191,454

187,208
187,344

181,460
181,460

188,731
188,940

$ 4,791,053
$ 4,520,057
270,996
$
251,576
$

$ 5,372,600
$ 5,076,255
296,345
$
286,485
$

$ 5,317,555
$ 5,014,944
302,611
$
290,774
$

$ 4,283,119
$ 4,637,537
$
$

(354,418) $
(361,335) $

$ 19,764,327
$ 19,248,793
515,534
467,500

$

$

$
$

152,061

0.76

0.76
0.80

$

$

$
$

176,429

0.89

0.89
0.82

$

$

$
$

175,006

0.88

0.88
0.82

$

$

$
$

(222,204) $

281,292

(1.13) $

(1.13) $
$
0.82

1.42

1.42
3.26

198,297
198,924

198,139
198,380

197,261
197,535

195,310
195,310

197,243
197,428

(1) For 2015, income from operations reflects non-cash lower of cost or market inventory valuation reductions of $6.5 million and $135.5 million 
for the first and second quarters, respectively, and charges of $225.5 million and $143.6 million for the third and fourth quarters, respectively. 

(2) Loss from operations for the fourth quarter of 2014 reflects a non-cash lower of cost or market inventory valuation charge of $397.5 million.

97

Item 9.  Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

We have had no change in, or disagreement with, our independent registered public accountants on matters involving accounting 
and financial disclosure.

Item 9A.  Controls and Procedures

Evaluation of disclosure controls and procedures.  Our principal executive officer and principal financial officer have evaluated, 
as required by Rule 13a-15(b) under the Securities Exchange Act of 1934 (the “Exchange Act”), our disclosure controls and 
procedures (as defined in Rules 13a-15(e) and 15d-15(e)) under the Exchange Act as of the end of the period covered by this 
annual  report  on  Form  10-K.  Our  disclosure  controls  and  procedures  are  designed  to  provide  reasonable  assurance  that  the 
information  we  are  required  to  disclose  in  the  reports  that  we  file  or  submit  under  the  Exchange Act  is  accumulated  and 
communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to 
allow timely decisions regarding required disclosure and is recorded, processed, summarized and reported within the time periods 
specified in the Securities and Exchange Commission's rules and forms. Based upon the evaluation, our principal executive officer 
and principal financial officer have concluded that our disclosure controls and procedures were effective at the reasonable assurance 
level as of December 31, 2015.

Changes in internal control over financial reporting.  There have been no changes in our internal control over financial reporting 
(as defined in Rule 13a-15(f) under the Exchange Act) that occurred during our last fiscal quarter that have materially affected or 
are reasonably likely to materially affect our internal control over financial reporting.

See Item 8 for “Management's Report on its Assessment of the Company's Internal Control Over Financial Reporting” and “Report 
of the Independent Registered Public Accounting Firm.” 

Item 9B.  Other Information

There have been no events that occurred in the fourth quarter of 2015 that would need to be reported on Form 8-K that have not 
previously been reported.

Item 10.  Directors, Executive Officers and Corporate Governance

PART III

The information required by Items 401, 405, 406 and 407(c)(3), (d)(4) and (d)(5) of Regulation S-K in response to this item will 
be set forth in our definitive proxy statement for the annual meeting of stockholders to be held on May 11, 2016 and is incorporated 
herein by reference.

Item 11.  Executive Compensation

The information required by Items 402 and 407(e)(4) and (e)(5) of Regulation S-K in response to this item will be set forth in our 
definitive proxy statement for the annual meeting of stockholders to be held on May 11, 2016 and is incorporated herein by 
reference.

Item 12.  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The equity compensation plan information required by Item 201(d) and the information required by Item 403 of Regulation S-K 
in response to this item will be set forth in our definitive proxy statement for the annual meeting of stockholders to be held on 
May 11, 2016 and is incorporated herein by reference.

98

Table of Content

Item 13.  Certain Relationships and Related Transactions, and Director Independence

The information required by Items 404 and 407(a) of Regulation S-K in response to this item will be set forth in our definitive 
proxy statement for the annual meeting of stockholders to be held on May 11, 2016 and is incorporated herein by reference.

Item 14.  Principal Accounting Fees and Services

The information required by Item 9(e) of Schedule 14A in response to this item will be set forth in our definitive proxy statement 
for the annual meeting of stockholders to be held on May 11, 2016 and is incorporated herein by reference.

PART IV

Item 15.  Exhibits, Financial Statement Schedules

(a) 

Documents filed as part of this report

(1) 

Index to Consolidated Financial Statements

Report of Independent Registered Public Accounting Firm

Consolidated Balance Sheets at December 31, 2015 and 2014

Consolidated Statements of Income for the years ended

December 31, 2015, 2014 and 2013

Consolidated Statements of Comprehensive Income for the years ended

December 31, 2015, 2014 and 2013

Consolidated Statements of Cash Flows for the years ended

December 31, 2015, 2014 and 2013

Consolidated Statements of Equity for the years ended

December 31, 2015, 2014 and 2013

Notes to Consolidated Financial Statements

(2) 

Index to Consolidated Financial Statement Schedules

Page in
Form 10-K

56

57

58

59

60

61

62

All schedules are omitted since the required information is not present or is not present in amounts sufficient to require 
submission of the schedule, or because the information required is included in the consolidated financial statements or 
notes thereto.

(3) 

Exhibits

The Exhibit Index on pages 101 to 108 of this Annual Report on Form 10-K lists the exhibits that are filed or furnished, 
as applicable, as part of this Annual Report on Form 10-K.

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Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this 
report to be signed on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

Date: February 24, 2016

HOLLYFRONTIER CORPORATION

(Registrant)

/s/ George J. Damiris
George J. Damiris
Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following 
persons on behalf of the registrant and in the capacities and as of the date indicated.

Signature

Capacity

Date

/s/ Michael C. Jennings
Michael C. Jennings

/s/ George J. Damiris
George J. Damiris

/s/ Douglas S. Aron
Douglas S. Aron

/s/ J.W. Gann, Jr.
J.W. Gann, Jr.

/s/ Douglas Y. Bech
Douglas Y. Bech

/s/ Leldon Echols
Leldon Echols

/s/ R. Kevin Hardage
R. Kevin Hardage

/s/ Robert J. Kostelnik
Robert J. Kostelnik

/s/ James H. Lee
James H. Lee

/s/ Franklin Myers
Franklin Myers

/s/ Michael E. Rose
Michael E. Rose

/s/ Tommy A. Valenta
Tommy A. Valenta

Executive Chairman

February 24, 2016

Chief Executive Officer, President
and Director

Executive Vice President and
Chief Financial Officer
(Principal Financial Officer)

Vice President, Controller and
Chief Accounting Officer
(Principal Accounting Officer)

Director

Director

Director

Director

Director

Director

Director

Director

100

February 24, 2016

February 24, 2016

February 24, 2016

February 24, 2016

February 24, 2016

February 24, 2016

February 24, 2016

February 24, 2016

February 24, 2016

February 24, 2016

February 24, 2016

 
Table of Content

Exhibit
Number

  Description

HOLLYFRONTIER CORPORATION
INDEX TO EXHIBITS

Exhibits are numbered to correspond to the exhibit table 
in Item 601 of Regulation S-K

2.1

2.2

2.3

2.4

3.1

3.2

4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

Asset Sale and Purchase Agreement, dated October 19, 2009, between Holly Refining & Marketing-Tulsa LLC, HEP 
Tulsa LLC and Sinclair Tulsa Refining Company (incorporated by reference to Exhibit 2.1 of Registrant's Current 
Report on Form 8-K filed October 21, 2009, File No. 1-03876).

Amendment  No.  1  to Asset  Sale  and  Purchase Agreement,  dated  December  1,  2009,  between  Holly  Refining  & 
Marketing-Tulsa LLC, HEP Tulsa LLC and Sinclair Tulsa Refining Company (incorporated by reference to Exhibit 2.1 
of Registrant's Current Report on Form 8-K filed December 7, 2009, File No. 1-03876).

Asset Sale and Purchase Agreement, dated April 15, 2009, between Holly Refining & Marketing-Midcon, L.L.C. and 
Sunoco, Inc. (incorporated by reference to Exhibit 2.1 of Registrant's Current Report on Form 8-K filed April 16, 2009, 
File No. 1-03876).

Agreement and Plan of Merger among Holly Corporation, North Acquisition, Inc. and Frontier Oil Corporation, dated 
February 21, 2011 (incorporated by reference to Exhibit 2.1 of Registrant's Current Report on Form 8-K filed February 
22, 2011, File No. 1-03876).

Amended and Restated Certificate of Incorporation of HollyFrontier Corporation (incorporated by reference to Exhibit 
3.1 of Registrant's Current Report on Form 8-K filed July  8, 2011, File No. 1-03876).

Amended and Restated Bylaws of HollyFrontier Corporation (incorporated by reference to Exhibit 3.1 of Registrant's 
Current Report on Form 8-K filed February 20, 2014, File No. 1-03876).

Indenture,  dated  November  22,  2010,  among  HollyFrontier  Corporation  (as  successor-in-interest  to  Frontier  Oil 
Corporation), the Guarantors and Wells Fargo Bank, National Association, providing for the issuance of 6 7/8% Senior 
Notes due 2018 (incorporated by reference to Exhibit 4.1 of Frontier Oil Corporation's Current Report on Form 8-K 
filed November 22, 2010, File Number 1-07627).

First Supplemental Indenture, dated November 22, 2010, among HollyFrontier Corporation (as successor-in-interest 
to Frontier Oil Corporation), the Guarantors and Wells Fargo Bank, National Association (incorporated by reference 
to  Exhibit  4.2  of  Frontier  Oil  Corporation's  Current  Report  on  Form  8-K  filed  November  22,  2010,  File  Number 
1-07627).

Second Supplemental Indenture, dated May 26, 2011, among HollyFrontier Corporation (as successor-in-interest to 
Frontier Oil Corporation), the Guarantors and Wells Fargo Bank, National Association (incorporated by reference to 
Exhibit 4.2 of Frontier Oil Corporation's Current Report on Form 8-K filed May 27, 2011, File No. 1-07627).

Third  Supplemental  Indenture,  dated  July  1,  2011,  among  HollyFrontier  Corporation  (as  successor-in-interest  to 
Frontier Oil Corporation), the Guarantors and Wells Fargo Bank, National Association (incorporated by reference to 
Exhibit 4.1 of Registrant's Current Report on Form 8-K filed July 8, 2011, File No. 1-03876).

Fourth Supplemental Indenture, dated September 6, 2013, among HollyFrontier Corporation, as issuer (as successor-
in-interest to Frontier Oil Corporation), the Guarantors and Wells Fargo Bank, National Association (incorporated by 
reference to Exhibit 4.1 of Registrant’s Quarterly Report on Form 10-Q for the quarterly period ended September 30, 
2013, File No. 1-03876).

Form of 6 7/8% Senior Note Due 2018 (incorporated by reference to Exhibit 4.3 of Frontier Oil Corporation's Current 
Report on Form 8-K filed November 22, 2010, file Number 1-07627).

Indenture, dated March 12, 2012, among Holly Energy Partners, L.P., Holly Energy Finance Corp., the Guarantors 
and U.S. Bank National Association, providing for the issuance of 6.50% Senior Notes due 2020 (incorporated by 
reference to Exhibit 4.1 of Holly Energy Partners, L.P.'s Current Report on Form 8-K filed March 12, 2012, File No. 
1-32225).

First Supplemental Indenture, dated August 6, 2012, among HEP UNEV Holdings LLC, HEP UNEV Pipeline LLC, 
Holly Energy Partners, L.P., Holly Energy Finance Corp., the other Guarantors and U.S. Bank National Association 
(incorporated by reference to Exhibit 4.2 of the Registrant's Quarterly Report on Form 10-Q for the quarterly period 
ended September 30, 2012, File No. 1-03876).

101

Table of Content

Exhibit
Number

4.9

4.10*

4.11*

10.1

10.2

10.3

10.4

10.5

10.6

10.7

10.8

10.9

  Description

Second Supplemental Indenture, dated March 25, 2015, among HEP El Dorado LLC, Holly Energy Partners, L.P., 
Holly Energy Finance Corp., the other Guarantors and U.S. Bank National Association (incorporated by reference to 
Exhibit 4.2 of the Registrant's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2015, File 
No. 1-03876).

Third Supplemental Indenture, dated September 23, 2015, among HEP Casper SLC LLC, Holly Energy Partners, L.P., 
Holly Energy Finance Corp., the other Guarantors and U.S. Bank National Association.

Fourth Supplemental Indenture, dated November 17, 2015, among El Dorado Operating LLC, Holly Energy Partners, 
L.P., Holly Energy Finance Corp., the other Guarantors and U.S. Bank National Association.

Amended and Restated Intermediate Pipelines Agreement, dated June 1, 2009, among Holly Corporation, Navajo 
Refining Company, L.L.C, Holly Energy Partners, L.P., Holly Energy Partners – Operating, L.P., HEP Pipeline, L.L.C., 
Lovington-Artesia, L.L.C., HEP Logistics Holdings, L.P., Holly Logistics Services, L.L.C. and HEP Logistics GP, 
L.L.C. (incorporated by reference to Exhibit 10.2 of Holly Energy Partners, L.P.'s Current Report on Form 8-K filed 
June 5, 2009, File No. 1-32225).

Amendment to Amended and Restated Intermediate Pipelines Agreement, dated December 9, 2010, among Navajo 
Refining Company, L.L.C, Holly Energy Partners, L.P., Holly Energy Partners – Operating, L.P., HEP Pipeline, L.L.C., 
Lovington-Artesia, L.L.C., HEP Logistics Holdings, L.P., Holly Logistics Services, L.L.C. and HEP Logistics GP, 
L.L.C. (incorporated by reference to Exhibit 10.4 of Registrant's Annual Report on Form 10-K for its fiscal year ended 
December 31, 2010, File No. 1-03876).

Assignment and Assumption Agreement (Amended and Restated Intermediate Pipelines Agreement), effective January 
1, 2011, between Navajo Refining Company, L.L.C. and Holly Refining & Marketing Company LLC (incorporated 
by reference to Exhibit 10.5 of Registrant's Annual Report on Form 10-K for its fiscal year ended December 31, 2010, 
File No. 1-03876).

Tulsa Equipment and Throughput Agreement, dated August 1, 2009, between Holly Refining & Marketing - Tulsa 
LLC and HEP Tulsa LLC (incorporated by reference to Exhibit 10.3 of Holly Energy Partners L.P.'s Current Report 
on Form 8-K filed August 6, 2009, File No. 1-32225).

Amendment to Tulsa Equipment and Throughput Agreement, dated December 9, 2010, among Holly Refining & 
Marketing - Tulsa LLC and HEP Tulsa LLC (incorporated by reference to Exhibit 10.7 of Registrant's Annual Report 
on Form 10-K for its fiscal year ended December 31, 2010, File No. 1-03876).

Assignment and Assumption Agreement (Tulsa Equipment and Throughput Agreement), effective January 1, 2011, 
between Holly Refining & Marketing - Tulsa, LLC and Holly Refining & Marketing Company LLC (incorporated 
by reference to Exhibit 10.8 of Registrant's Annual Report on Form 10-K for its fiscal year ended December 31, 2010, 
File No. 1-03876).

Tulsa Purchase Option Agreement, dated August 1, 2009, between Holly Refining & Marketing - Tulsa LLC and HEP 
Tulsa LLC (incorporated by reference to Exhibit 10.4 of Holly Energy Partners L.P.'s Current Report on Form 8-K 
filed August 6, 2009, File No. 1-32225).

Second Amended and Restated Crude Pipelines and Tankage Agreement, dated July 16, 2013, among Navajo Refining 
Company, L.L.C., Holly Refining & Marketing Company - Woods Cross LLC, HollyFrontier Refining & Marketing 
LLC, Holly Energy Partners-Operating, L.P., HEP Pipeline, LLC and HEP Woods Cross, L.L.C. (incorporated by 
reference to Exhibit 10.3 of Registrant's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2013, 
File No. 1-03876).

Third Amended and Restated Crude Pipelines and Tankage Agreement, dated March 12, 2015, by and among Navajo 
Refining Company, L.L.C., Holly Refining & Marketing Company - Woods Cross LLC, HollyFrontier Refining & 
Marketing  LLC,  Holly  Energy  Partners-Operating,  L.P.,  HEP  Pipeline,  L.L.C.  and  HEP  Woods  Cross  L.L.C. 
(incorporated by reference to Exhibit 10.2 of Registrant's Current Report on Form 8-K filed March 16, 2015, File No. 
1-03876).

10.10

Amended and Restated Refined Product Pipelines and Terminals Agreement, dated December 1, 2009, among Navajo 
Refining Company, L.L.C., Holly Refining & Marketing Company - Woods Cross, Holly Energy Partners - Operating, 
L.P., HEP Pipeline Assets, Limited Partnership, HEP Pipeline, L.L.C., HEP Refining Assets, L.P., HEP Refining, 
L.L.C., HEP Mountain Home, L.L.C. and HEP Woods Cross, L.L.C. (incorporated by reference to Exhibit 10.9 of 
Holly Energy Partners, L.P.'s Current Report on Form 8-K filed December 7, 2009, File No. 1-32225).

102

Table of Content

Exhibit
Number

10.11

10.12

10.13

10.14

10.15

10.16

10.17

10.18

10.19

10.20

10.21

10.22

10.23

10.24

  Description

Assignment  and  Assumption  Agreement  (Amended  and  Restated  Refined  Product  Pipelines  and  Terminals 
Agreement), effective January 1, 2011, among Navajo Refining Company, L.L.C., Holly Refining & Marketing - 
Woods  Cross  and  Holly  Refining  &  Marketing  Company  LLC  (incorporated  by  reference  to  Exhibit  10.12  of 
Registrant's Annual Report on Form 10-K for its fiscal year ended December 31, 2010, File No. 1-03876).

First Amendment to Amended and Restated Refined Product Pipelines and Terminals Agreement, dated November 
7, 2013, effective September 30, 2013, among HollyFrontier Refining & Marketing LLC (formerly Holly Refining 
& Marketing LLC), Holly Energy Partners - Operating, L.P., HEP Pipeline Assets, Limited Partnership, HEP Pipeline, 
L.L.C., HEP Refining Assets, L.P., HEP Refining L.L.C., HEP Mountain Home, L.L.C. and HEP Woods Cross, L.L.C. 
(incorporated by reference to Exhibit 10.14 of Registrant’s Annual Report on Form 10-K for its fiscal year ended 
December 31, 2013, File No. 1-03876).

Second  Amended  and  Restated  Pipelines  and  Terminals  Agreement,  dated  February  22,  2016,  by  and  among 
HollyFrontier Refining & Marketing LLC, HollyFrontier Corporation, Holly Energy Partners - Operating, L.P. and 
Holly Energy Partners, L.P. (incorporated by reference to Exhibit 10.3 of Registrant’s Current Report on Form 8-K 
filed February 22, 2016, File No. 1-03876).

Second Amended and Restated Throughput Agreement (Tucson Terminal), dated September 19, 2013, effective June 
1,  2013,  among  HollyFrontier  Refining  &  Marketing  LLC,  HEP  Refining,  L.L.C.  and  Holly  Energy  Partners  - 
Operating, L.P. (incorporated by reference to Exhibit 10.5 of Registrant's Quarterly Report on Form 10-Q for the 
quarterly period ended September 30, 2013, File No. 1-03876).

Pipeline Throughput Agreement (Roadrunner), dated December 1, 2009, between Navajo Refining Company, L.L.C. 
and Holly Energy Partners - Operating, L.P. (incorporated by reference to Exhibit 10.4 of Holly Energy Partners, L.P.'s 
Current Report on Form 8-K filed December 7, 2009, File No. 1-32225).

Assignment and Assumption Agreement (Pipeline Throughput Agreement (Roadrunner)), effective January 1, 2011, 
between Navajo Refining Company, L.L.C. and Holly Refining & Marketing Company LLC (incorporated by reference 
to Exhibit 10.14 of Registrant's Annual Report on Form 10-K for its fiscal year ended December 31, 2010, File No. 
1-03876).

Assignment  and  Assumption  Agreement  (First  Amended  and  Restated  Pipelines,  Tankage  and  Loading  Rack 
Throughput Agreement (Tulsa East)), effective January 1, 2011, between Holly Refining & Marketing - Tulsa LLC 
and Holly Refining & Marketing Company LLC (incorporated by reference to Exhibit 10.17 of Registrant's Annual 
Report on Form 10-K for its fiscal year ended December 31, 2010, File No. 1-03876).

Second Amended and Restated Pipelines, Tankage and Loading Rack Throughput Agreement, dated August 31, 2011, 
between  Holly  Refining  &  Marketing  -  Tulsa  LLC,  HEP  Tulsa  LLC  and  Holly  Energy  Storage  -  Tulsa  LLC 
(incorporated by reference to Exhibit 10.1 of Registrant's Current Report on Form 8-K filed September 1, 2011, File 
No. 1-03876).
Indemnification Proceeds and Payments Allocation Agreement, dated December 1, 2009, between HEP Tulsa LLC 
and Holly Refining & Marketing - Tulsa LLC (incorporated by reference to Exhibit 10.2 of Registrant's Current Report 
on Form 8-K filed December 7, 2009, File No. 1-03876).

Pipeline  Systems  Operating Agreement, dated  February  8,  2010,  among  Navajo  Refining  Company, L.L.C.,  Lea 
Refining Company, Woods Cross Refining Company, L.L.C., Holly Refining & Marketing - Tulsa LLC and Holly 
Energy Partners - Operating, L.P. (incorporated by reference to Exhibit 10.1 of Holly Energy Partners, L.P.'s Current 
Report on Form 8-K filed February 9, 2010, File No. 1-32225).

First Amendment to Pipeline Systems Operating Agreement, dated March 31, 2010, among Navajo Refining Company, 
L.L.C., Lea Refining Company, Woods Cross Refining Company, L.L.C., Holly Refining & Marketing - Tulsa LLC 
and Holly Energy Partners - Operating, L.P. (incorporated by reference to Exhibit 10.5 of Registrant's Current Report 
on Form 8-K filed April 6, 2010, File No. 1-03876).

Loading Rack Throughput Agreement (Lovington), dated March 31, 2010, between Navajo Refining Company, L.L.C. 
and Holly Energy Storage-Lovington LLC (incorporated by reference to Exhibit 10.2 of Registrant's Current Report 
on Form 8-K filed April 6, 2010, File No. 1-03876).

First Amended and Restated Lease and Access Agreement (East Tulsa), dated March 31, 2010, among Holly Refining 
& Marketing-Tulsa, HEP Tulsa LLC and Holly Energy Storage-Tulsa LLC (incorporated by reference to Exhibit 10.4 
of Registrant's Current Report on Form 8-K filed April 6, 2010, File No. 1-03876).

LLC Interest Purchase Agreement, dated November 9, 2011, among HollyFrontier Corporation, Frontier Refining 
LLC,  Frontier  El  Dorado  Refining  LLC,  Holly  Energy  Partners-Operating,  L.P.  and  Holly  Energy  Partners,  L.P. 
(incorporated by reference to Exhibit 10.1 of Registrant's Current Report on Form 8-K filed November 10, 2011, File 
No. 1-03876).

103

Table of Content

Exhibit
Number

10.25

10.26

10.27

10.28

10.29

10.30

10.31

10.32

10.33

10.34

10.35

10.36

10.37

10.38

10.39

  Description

First Amended and Restated Tankage, Loading Rack and Crude Oil Receiving Throughput Agreement (Cheyenne), 
dated November 11, 2011, between Frontier Refining LLC and Cheyenne Logistics LLC (incorporated by reference 
to Exhibit 10.26 of Registrant's Annual Report on Form 10-K for its fiscal year ended December 31, 2011, File No. 
1-03876).

Second Amended and Restated Pipeline Delivery, Tankage and Loading Rack Throughput Agreement (El Dorado), 
dated January 7, 2014, between Frontier El Dorado Refining LLC and El Dorado Logistics LLC (incorporated by 
reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K filed January 13, 2014, File No. 1-03876).

Tenth  Amended  and  Restated  Omnibus  Agreement,  dated  September  26,  2014,  by  and  among  HollyFrontier 
Corporation, Holly Energy Partners, L.P. and certain of their respective subsidiaries (incorporated by reference to 
Exhibit 10.2 of Registrant's Current Report on Form 8-K filed September 29, 2014, File No. 1-03876).

Eleventh  Amended  and  Restated  Omnibus  Agreement,  dated  March  12,  2015,  by  and  among  HollyFrontier 
Corporation, Holly Energy Partners, L.P. and certain of their respective subsidiaries (incorporated by reference to 
Exhibit 10.3 of Registrant's Current Report on Form 8-K filed March 16, 2015, File No. 1-03876).

Twelfth  Amended  and  Restated  Omnibus  Agreement,  dated  October  16,  2015,  by  and  among  HollyFrontier 
Corporation, Holly Energy Partners, L.P. and certain of their respective subsidiaries (incorporated by reference to 
Exhibit 10.4 of Registrant's Current Report on Form 8-K filed October 21, 2015, File No. 1-03876).

Thirteenth Amended and Restated Omnibus Agreement, dated as of November 2, 2015, by and among HollyFrontier 
Corporation, Holly Energy Partners, L.P. and certain of their respective subsidiaries (incorporated by reference to 
Exhibit 10.4 of Registrant's Current Report on Form 8-K dated November 3, 2015, File No. 1-03876).

Fourteenth Amended  and  Restated  Omnibus Agreement,  dated  February  22,  2016,  by  and  among  HollyFrontier 
Corporation, Holly Energy Partners, L.P. and certain of their respective subsidiaries (incorporated by reference to 
Exhibit 10.4 of Registrant’s Current Report on Form 8-K filed February 22, 2016, File No. 1-03876).

Lease and Access Agreement (Cheyenne), dated November 9, 2011, between Frontier Refining LLC and Cheyenne 
Logistics LLC (incorporated by reference to Exhibit 10.5 of Registrant's Current Report on Form 8-K filed November 
10, 2011, File No. 1-03876).

First Amendment to Lease and Access Agreement (Cheyenne), effective June 5, 2012, between Frontier Refining LLC 
and Cheyenne Logistics LLC. (incorporated by reference to Exhibit 10.32 of Registrant's Annual Report on Form 10-
K for its fiscal year ended December 31, 2013, File No. 1-03876).

Lease and Access Agreement (El Dorado), dated November 9, 2011, between Frontier El Dorado Refining LLC and 
El Dorado Logistics LLC (incorporated by reference to Exhibit 10.6 of Registrant's Current Report on Form 8-K filed 
November 10, 2011, File No. 1-03876).

First Amendment to Lease and Access Agreement ( El Dorado), effective August 15, 2012, between Frontier El Dorado 
Refining LLC and El Dorado Logistics LLC. (incorporated by reference to Exhibit 10.34 of Registrant's Annual Report 
on Form 10-K for its fiscal year ended December 31, 2013, File No. 1-03876).

Second Amendment to Lease and Access Agreement ( El Dorado), effective December 5, 2012, between Frontier El 
Dorado Refining LLC and El Dorado Logistics LLC. (incorporated by reference to Exhibit 10.35 of Registrant's 
Annual Report on Form 10-K for its fiscal year ended December 31, 2013, File No. 1-03876).

Third Amendment to Lease and Access Agreement ( El Dorado), dated January 7, 2014, between Frontier El Dorado 
Refining LLC and El Dorado Logistics LLC. (incorporated by reference to Exhibit 10.36 of Registrant's Annual Report 
on Form 10-K for its fiscal year ended December 31, 2013, File No. 1-03876).

Senior Unsecured 5-Year Revolving Credit Agreement, dated July 1, 2014, among HollyFrontier Corporation, as 
borrower, Union Bank, N. A. as administrative agent, and each of the financial institutions party thereto as lenders 
(incorporated by reference to Exhibit 10.1 of Registrant's Current Report on Form 8-K filed July 8, 2014, File No. 
1-03876).

Subsidiary Guarantee, dated July 1, 2014, by certain subsidiaries of HollyFrontier Corporation in favor of Union 
Bank, N. A. as administrative agent (incorporated by reference to Exhibit 10.2 of Registrant's Current Report on Form 
8-K filed July 8, 2014, File No. 1-03876).

10.40*

Release of Subsidiary Guarantee, dated December 29, 2015, by and among HollyFrontier Corporation and Union 
Bank, N.A.

104

Table of Content

Exhibit
Number

10.41

10.42

10.43

10.44

10.45

10.46

10.47

10.48

10.49

10.50

10.51

10.52

  Description

Frontier Products Offtake Agreement El Dorado Refinery, dated October 19, 1999, between Frontier Oil and Refining 
Company and Equiva Trading Company (now Shell Oil Products US, assignee of Equiva Trading Company) (“the 
Agreement”) and First Amendment to the Agreement dated September 18, 2000, Second Amendment to the Agreement 
dated September 21, 2000, Third Amendment to the Agreement dated December 19, 2000, Fourth Amendment to the 
Agreement dated February 22, 2001, Fifth Amendment to the Agreement dated August 14, 2001, Sixth Amendment 
to  the Agreement dated  November  5,  2001,  Seventh Amendment to  the Agreement dated April 22,  2002,  Eighth 
Amendment to the Agreement date d May 30, 2003, Ninth Amendment to the Agreement dated May 25, 2004, Tenth 
Amendment to the Agreement dated May 3, 2005, Eleventh Amendment to the Agreement dated March 31, 2006, 
Twelfth Amendment to the Agreement dated May 11, 2006, Thirteenth Amendment to the Agreement dated September 
30, 2007, Fourteenth Amendment to the Agreement dated May 1, 2008 and Fifteenth Amendment to the Agreement 
dated May 28, 2008 (incorporated by reference to Exhibit 10.1 to Frontier Oil Corporation's Quarterly Report on Form 
10-Q for the quarterly period ended June 30, 2008, File No. 1-07627).

Seventeenth Amendment, dated August 27, 2013, to the Frontier Products Offtake Agreement El Dorado Refinery, 
dated October 19, 1999, between Frontier Oil and Refining Company (now HollyFrontier Refining & Marketing LLC, 
as successor-by-merger to Frontier Oil and Refining Company) and Equiva Trading Company (now Shell Oil Products 
US, assignee of Equiva Trading Company) (incorporated by reference to Exhibit 10.5 of Registrant's Quarterly Report 
on Form 10-Q for the quarterly period ended September 30, 2013, File No. 1-03876).

Master Crude Oil Purchase and Sale Contract, dated November 1, 2010, among BNP Paribas Energy Trading GP, 
BNP  Paribas  Energy  Trading  Canada  Corp.,  Frontier  Oil  and  Refining  Company  and  Frontier  Oil  Corporation 
(incorporated by reference to Exhibit 10.1 to Frontier Oil Corporation's Quarterly Report on Form 10-Q for the quarterly 
period ended September 30, 2010, File No. 1-07627).

Guaranty, dated November 1, 2010, by Frontier Oil Corporation in favor of BNP Paribas Energy Trading GP and BNP 
Paribas Energy Trading Canada Corp. (incorporated by reference to Exhibit 10.1 to Frontier Oil Corporation's Quarterly 
Report on Form 10-Q for the quarterly period ended September 30, 2010, File No. 1-07627).

LLC Interest Purchase Agreement, dated July 12, 2012, among HollyFrontier Corporation, Holly Energy Partners, 
L.P. and HEP UNEV Holdings LLC (incorporated by reference to Exhibit 10.2 to the Registrant's Quarterly Report 
on Form 10-Q for the quarterly period ended June 30, 2012, File No. 1-03876).

Limited Partial Waiver of Incentive Distribution Rights under the First Amended and Restated Agreement of Limited 
Partnership of Holly Energy Partners, L.P., dated July 12, 2012 (incorporated by reference to Exhibit 10.4 to the 
Registrant's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2012, File No. 1-03876).

Amended and Restated Limited Liability Company Agreement of HEP UNEV Holdings LLC, dated July 12, 2012, 
among HEP UNEV Holdings LLC, HollyFrontier Holdings LLC and Holly Energy Partners, L.P. (incorporated by 
reference to Exhibit 10.5 to the Registrant's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 
2012, File No. 1-03876).

Amended and Restated Transportation Services Agreement, dated September 26, 2014, by and between HollyFrontier 
Refining & Marketing LLC and Holly Energy Partners - Operating L.P.  (incorporated by reference to Exhibit 10.1 
of Registrant's Current Report on Form 8-K filed September 29, 2014, File No. 1-03876).

Refined Products Purchase Agreement, dated December 1, 2009, between Holly Refining & Marketing - Tulsa
LLC and Sinclair Tulsa Refining Company (incorporated by reference to Exhibit 10.4 of Registrant's Quarterly
Report on Form 10-Q for the quarterly period ended June 30, 2013, File No. 1-03876).

First Amendment to Refined Products Purchase Agreement, dated May 17, 2010, between Holly Refining & Marketing 
- Tulsa LLC and Sinclair Tulsa Refining Company (incorporated by reference to Exhibit 10.5 of Registrant's Quarterly 
Report on Form 10-Q for the quarterly period ended June 30, 2013, File No. 1-03876).

Second Amendment to  Refined  Products  Purchase Agreement, dated  December  19,  2011, between  HollyFrontier 
Refining & Marketing LLC and Sinclair Oil Corporation (incorporated by reference to Exhibit 10.6 of Registrant's 
Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2013, File No 1-03876).

Third Amendment to Refined Products Purchase Agreement, dated June 1, 2012, between HollyFrontier Refining & 
Marketing LLC and Sinclair Oil Corporation (incorporated by reference to Exhibit 10.7 of Registrant's Quarterly 
Report on Form 10-Q for the quarterly period ended June 30, 2013, File No. 1-03876).

105

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Exhibit
Number

10.53

10.54

10.55

10.56

10.57

10.58

10.59

10.60

10.61

10.62

10.63

10.64

10.65

10.66

  Description

Fourth  Amendment  to  Refined  Products  Purchase  Agreement,  dated  February  27,  2014,  between  HollyFrontier 
Refining & Marketing LLC and Sinclair Oil Corporation (incorporated by reference to Exhibit 10.55 of Registrant's 
Annual Report on Form 10-K for its fiscal year ended December 31, 2014, File No. 1-03876).

Fifth Amendment to Refined Products Purchase Agreement dated June 23, 2014, between HollyFrontier Refining & 
Marketing LLC and Sinclair Oil Corporation (incorporated by reference to Exhibit 10.56 of Registrant's Annual Report 
on Form 10-K for its fiscal year ended December 31, 2014, File No. 1-03876).

Unloading  and  Blending  Services Agreement, dated  March  12,  2015,  by  and  between  HollyFrontier  Refining  & 
Marketing LLC, Holly Energy Partners-Operating, L.P. and HEP Refining, L.L.C. (incorporated by reference to Exhibit 
10.1 of Registrant's Current Report on Form 8-K filed March 16, 2015, File No. 1-03876).
Assignment and Assumption of Agreements, dated as of October 16, 2015, by and between HollyFrontier Refining 
& Marketing LLC, Navajo Refining Company, L.L.C., Holly Refining & Marketing - Tulsa LLC, Frontier Refining 
LLC and Frontier El Dorado LLC (incorporated by reference to Exhibit 10.1 of Registrant's Current Report on Form 
8-K filed October 21, 2015, File No. 1-03876).

Master Throughput Agreement, dated as of October 16, 2015, by and between HollyFrontier Refining & Marketing 
LLC and Holly Energy Partners-Operating L.P. (incorporated by reference to Exhibit 10.2 of Registrant's Current 
Report on Form 8-K filed October 21, 2015, File No. 1-03876).

Amended  and  Restated  Master  Throughput Agreement, dated  February  22,  2016,  by  and  between  HollyFrontier 
Refining & Marketing LLC and Holly Energy Partners - Operating, L.P. (incorporated by reference to Exhibit 10.5 
of Registrant’s Current Report on Form 8-K filed February 22, 2016, File No. 1-03876).

Construction  Payment  Agreement,  dated  as  of  October  16,  2015,  by  and  between  HEP  Refining,  L.L.C.  and 
HollyFrontier Refining & Marketing LLC (incorporated by reference to Exhibit 10.3 of Registrant's Current Report 
on Form 8-K filed October 21, 2015, File No. 1-03876).

Services and Secondment Agreement, dated as of October 16, 2015, by and among Holly Logistic Services, L.L.C., 
Holly Energy Partners-Operating L.P., Cheyenne Logistics LLC, El Dorado Logistics LLC, HollyFrontier Payroll 
Services, Inc., Frontier Refining LLC and Frontier El Dorado Refining LLC (incorporated by reference to Exhibit 
10.5 of Registrant's Current Report on Form 8-K filed October 21, 2015, File No. 1-03876).

Amended and Restated Services and Secondment Agreement, dated as of November 2, 2015, by and among Holly 
Logistic Services, L.L.C., Holly Energy Partners-Operating L.P., El Dorado Operating LLC, Cheyenne Logistics LLC, 
El Dorado Logistics LLC, HollyFrontier Payroll Services, Inc., Frontier Refining LLC and Frontier El Dorado Refining 
LLC (incorporated by reference to Exhibit 10.5 of Registrant's Current Report on Form 8-K filed November 3, 2015, 
File No. 1-03876).

Master Lease and Access Agreement, dated as of October 16, 2015, by and among Frontier El Dorado Refining LLC, 
Frontier Refining LLC, Holly Refining & Marketing - Tulsa LLC, Holly Refining & Marketing Company - Woods 
Cross LLC, Navajo Refining Company, L.L.C., El Dorado Logistics LLC, Cheyenne Logistics LLC, HEP Tulsa LLC, 
HEP Woods Cross, L.L.C. and HEP Pipeline, L.L.C. (incorporated by reference to Exhibit 10.6 of Registrant's Current 
Report on Form 8-K filed October 21, 2015, File No. 1-03876).

Amended and Restated Master Lease and Access Agreement, dated as of November 2, 2015, by and among Frontier 
El  Dorado  Refining  LLC,  Frontier  Refining  LLC,  Holly  Refining  &  Marketing  -  Tulsa  LLC,  Holly  Refining  & 
Marketing Company - Woods Cross LLC, Navajo Refining Company, L.L.C., El Dorado Operating LLC, El Dorado 
Logistics  LLC,  Cheyenne  Logistics  LLC,  HEP Tulsa LLC,  HEP Woods Cross,  L.L.C.  and  HEP Pipeline,  L.L.C. 
(incorporated by reference to Exhibit 10.6 of Registrant's Current Report on Form 8-K filed November 3, 2015, File 
No. 1-03876).

LLC Interest Purchase Agreement, dated as of November 2, 2015, by and between HollyFrontier Corporation, Frontier 
El Dorado Refining LLC and Holly Energy Partners-Operating, L.P. (incorporated by reference to Exhibit 10.1 of 
Registrant's Current Report on Form 8-K filed November 3, 2015, File No. 1-03876).

Master Tolling Agreement (Refinery Assets), dated as of November 2, 2015, by and between Frontier El Dorado 
Refining LLC and Holly Energy Partners-Operating L.P. (incorporated by reference to Exhibit 10.2 of Registrant's 
Current Report on Form 8-K filed November 3, 2015, File No. 1-03876).

Master Tolling Agreement (Operating Assets), dated as of November 2, 2015, by and between Frontier El Dorado 
Refining LLC and Holly Energy Partners-Operating L.P. (incorporated by reference to Exhibit 10.3 of Registrant's 
Current Report on Form 8-K filed November 3, 2015, File No. 1-03876).

106

Table of Content

Exhibit
Number

  Description

10.67*† LLC Interest Purchase Agreement, dated February 22, 2016, by and among HollyFrontier Refining & Marketing LLC, 

HollyFrontier Corporation, Holly Energy Partners - Operating, L.P. and Holly Energy Partners, L.P. 

10.68*† Refined Products Terminal Transfer Agreement, dated February 22, 2016, by and among HEP Refining Assets, L.P., 
Holly Energy Partners, L.P., El Paso Logistics LLC, HollyFrontier Corporation and Holly Energy Partners - Operating, 
L.P. 

10.69+

10.70+

10.71+

10.72+

10.73+

10.74+

10.75+

10.76+

10.77+

10.78+

10.79+

10.80+

10.81+

10.82+

10.83+

10.84+

HollyFrontier Corporation Long-Term Incentive Compensation Plan (formerly the Holly Corporation Long-Term 
Incentive Compensation Plan), as amended and restated on May 24, 2007 as approved at the Annual Meeting of 
Stockholders of Holly Corporation on May 24, 2007 (incorporated by reference to Exhibit 10.4 of Registrant's Annual 
Report on Form 10-K for its fiscal year ended December 31, 2008, File No. 1-03876).

First  Amendment  to  the  HollyFrontier  Corporation  Long-Term  Incentive  Compensation  Plan  (incorporated  by 
reference to Exhibit 10.5 of Registrant's Annual Report on Form 10-K for its fiscal year ended December 31, 2008, 
File No. 1-03876).

Second Amendment to  the  HollyFrontier  Corporation  Long-Term Incentive  Compensation  Plan  (incorporated  by 
reference to Exhibit 10.1 of the Registrant's Current Report on Form 8-K filed May 18, 2011, File No. 1-03876).

Third  Amendment  to  the  HollyFrontier  Corporation  Long-Term  Incentive  Compensation  Plan  (incorporated  by 
reference to Exhibit 4.6 of the Registrant's Registration Statement on Form S-8 filed November 9, 2012, File No. 
333-184877).

Fourth Amendment  to  the  HollyFrontier  Corporation  Long-Term  Incentive  Compensation  Plan  (incorporated  by 
reference to Exhibit 10.2 of Registrant's Current Report on Form 8-K filed May 15, 2015, File No. 1-03876).

Holly Corporation Amended and Restated Change in Control Agreement Policy (incorporated by reference to Exhibit 
10.1 of Registrant's Current Report on Form 8-K filed March 1, 2011, File No. 1-03876).

Holly Corporation Employee Form of Change in Control Agreement (for grandfathered Holly Corporation employees) 
(incorporated by reference to Exhibit 10.2 of Registrant's Current Report on Form 8-K filed February 20, 2008, File 
No. 1-03876).

HollyFrontier Corporation Form of Change in Control Agreement (for legacy Frontier Oil Corporation executives) 
(incorporated by reference to Exhibit 10.1 of Registrant's Current Report on Form 8-K filed February 24, 2012, File 
No. 1-03876).

HollyFrontier Corporation Form of Amendment to Change in Control Agreement for Chief Executive Officer and 
Chief Financial Officer (incorporated by reference to Exhibit 10.1 of Registrant's Current Report on Form 8-K filed 
May 10, 2012, File No. 1-03876).

HollyFrontier  Corporation  Form  of  Change  in  Control  Agreement  (for  legacy  Holly  Corporation  employees) 
(incorporated by reference to Exhibit 10.1 of Registrant's Current Report on Form 8-K filed March 30, 2012, File No. 
1-03876).

HollyFrontier  Corporation  Form  of  Change  in  Control Agreement (for  HollyFrontier  Corporation  new  hires  and 
promotes) (incorporated by reference to Exhibit 10.2 of Registrant's Current Report on Form 8-K filed March 30, 
2012, File No. 1-03876).

HollyFrontier Corporation Form of Amendment to Change in Control Agreement for George J. Damiris (incorporated 
by reference to Exhibit 10.1 of Registrant's Current Report on Form 8-K filed March 14, 2013, File No. 1-03876).

Change in Control Agreement, dated December 21, 2015, between the Company and Michael C. Jennings (incorporated 
by reference to Exhibit 10.1 of Registrant's Current Report on Form 8-K filed December 21, 2015, File No. 1-03876).

Form of Performance Share Unit Agreement (for 162(m) covered employees) (incorporated by reference to Exhibit 
4.11 of the Registrant's Registration Statement on Form S-8 filed November 9, 2012, File No. 333-184877).

Form of Performance Share Unit Agreement (for non-162(m) covered employees) (incorporated by reference to Exhibit 
4.12 of the Registrant's Registration Statement on Form S-8 filed November 9, 2012, File No. 333-184877).

Form of Restricted Stock Agreement (time-based vesting) (incorporated by reference to Exhibit 4.13 of the Registrant's 
Registration Statement on Form S-8 filed November 9, 2012, File No. 333-184877).

107

Table of Content

Exhibit
Number

10.85+

10.86+

10.87+

10.88+

10.89+

10.90+

10.91+

10.92+

10.93+

10.94+

10.95+

  Description

Form of Notice of Grant of Restricted Stock (incorporated by reference to Exhibit 4.14 of the Registrant's Registration 
Statement on Form S-8 filed November 9, 2012, File No. 333-184877).

Form of Restricted Stock Unit Agreement (for non-employee directors) (incorporated by reference to Exhibit 10.63 
of Registrant's Annual Report on Form 10-K for its fiscal year ended December 31, 2012, File No. 1-03876).

Form of Notice of Grant of Restricted Stock Units (for non-employee directors) (incorporated by reference to Exhibit 
10.64 of Registrant's Annual Report on Form 10-K for its fiscal year ended December 31, 2012, File No. 1-03876).

Form of Indemnification Agreement entered into with directors and officers of Holly Corporation (incorporated by 
reference to Exhibit 10.1 of Registrant's Current Report on Form 8-K filed December 13, 2006, File No. 1-03876).

Retention and Assumption Agreement, dated February 21, 2011, among Frontier Oil Corporation, Holly Corporation 
and Michael C. Jennings (incorporated by reference to Exhibit 10.1 to Frontier Oil Corporation's Current Report on 
Form 8-K filed February 21, 2011, File No. 1-07627).

Retention and Assumption Agreement, dated February 21, 2011, among Frontier Oil Corporation, Holly Corporation 
and Doug S. Aron (incorporated by reference to Exhibit 10.2 to Frontier Oil Corporation's Current Report on Form 
8-K filed February 21, 2011, File No. 1-07627).

HollyFrontier Corporation Omnibus Incentive Compensation Plan (formerly the Frontier Oil Corporation Omnibus 
Incentive Compensation Plan) (incorporated by reference to Exhibit 10.5 of Registrant's Current Report on Form 8-
K filed July 8, 2011, File No. 1-03876).

First Amendment to the HollyFrontier Corporation Omnibus Incentive Compensation Plan (incorporated by reference 
to Exhibit 10.1 of Registrant's Current Report on Form 8-K filed May 15, 2015, File No. 1-03876).

HollyFrontier  Corporation  Executive  Nonqualified  Deferred  Compensation  Plan  (formerly  the  Frontier  Deferred 
Compensation Plan) (incorporated by reference to Exhibit 10.73 of Registrant's Annual Report on Form 10-K for its 
fiscal year ended December 31, 2012, File No. 1-03876).

Form of Indemnification Agreement between Frontier and each of its officers and directors (incorporated by reference 
to Exhibit 10.41 to Frontier Oil Corporation's Annual Report on Form 10-K for its fiscal year ended December 31, 
2006, File No. 1-07627).

Form  of  Indemnification  Agreement  between  HollyFrontier  Corporation  and  each  of  its  officers  and  directors 
(incorporated by reference to Exhibit 10.79 of Registrant's Annual Report on Form 10-K for its fiscal year ended 
December 31, 2011, File No. 1-03876).

21.1*

Subsidiaries of Registrant.

23.1*

Consent of Independent Registered Public Accounting Firm.

31.1*

Certification of Chief Executive Officer under Section 302 of the Sarbanes-Oxley Act of 2002.

31.2*

Certification of Chief Financial Officer under Section 302 of the Sarbanes-Oxley Act of 2002.

32.1**

Certification of Chief Executive Officer under Section 906 of the Sarbanes-Oxley Act of 2002.

32.2**

Certification of Chief Financial Officer under Section 906 of the Sarbanes-Oxley Act of 2002.

101++

The following financial information from Registrant's Annual Report on Form 10-K for its fiscal year ended December 
31,  2015,  formatted  in  XBRL  (Extensible  Business  Reporting  Language):  (i)  Consolidated  Balance  Sheets,  (ii) 
Consolidated  Statements  of  Income,  (iii)  Consolidated  Statements  of  Comprehensive  Income,  (iv)  Consolidated 
Statements  of  Cash  Flows,  (v)  Consolidated  Statements  of  Equity,  and  (vi)  Notes  to  the  Consolidated  Financial 
Statements.

* Filed herewith.
** Furnished herewith.
+ Constitutes management contracts or compensatory plans or arrangements.
++ Filed electronically herewith.
 † Exhibit reflects correction of minor clerical error in signature block of previously filed exhibit.

108

I, George J. Damiris, certify that:

CERTIFICATION

Exhibit 31.1

1. 

I have reviewed this annual report on Form 10-K of HollyFrontier Corporation;

2.  Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material 
fact necessary to make the statements made, in light of the circumstances under which such statements were made, not 
misleading with respect to the period covered by this report;

3.  Based on my knowledge, the financial statements, and other financial information included in this report, fairly present 
in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the 
periods presented in this report;

4.  The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and 
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as 
defined in Exchange Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.  designed  such  disclosure  controls  and  procedures,  or  caused  such  disclosure  controls  and  procedures  to  be 
designed  under  our  supervision,  to  ensure  that  material  information  relating  to  the  registrant,  including  its 
consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in 
which this report is being prepared;

b.  designed such internal control over financial reporting, or caused such internal control over financial reporting 
to  be  designed  under  our  supervision,  to  provide  reasonable  assurance  regarding  the  reliability  of  financial 
reporting and the preparation of financial statements for external purposes in accordance with generally accepted 
accounting principles;

c.  evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report 
our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period 
covered by this report based on such evaluation; and

d.  disclosed in this report any change in the registrant’s internal control over financial reporting that occurred 
during the registrant’s most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual 
report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control 
over financial reporting; and

5.  The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control 
over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons 
performing the equivalent functions):

a.  all significant deficiencies and material weaknesses in the design or operation of internal control over financial 
reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize 
and report financial information; and

b.  any fraud, whether or not material, that involves management or other employees who have a significant role 

in the registrant’s internal control over financial reporting

Date: February 24, 2016

/s/ George J. Damiris  
George J. Damiris
Chief Executive Officer and President

 
 
I, Douglas S. Aron, certify that:

CERTIFICATION

Exhibit 31.2

1. 

I have reviewed this annual report on Form 10-K of HollyFrontier Corporation;

2.  Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material 
fact necessary to make the statements made, in light of the circumstances under which such statements were made, not 
misleading with respect to the period covered by this report;

3.  Based on my knowledge, the financial statements, and other financial information included in this report, fairly present 
in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the 
periods presented in this report;

4.  The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and 
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as 
defined in Exchange Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.  designed  such  disclosure  controls  and  procedures,  or  caused  such  disclosure  controls  and  procedures  to  be 
designed  under  our  supervision,  to  ensure  that  material  information  relating  to  the  registrant,  including  its 
consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in 
which this report is being prepared;

b.  designed such internal control over financial reporting, or caused such internal control over financial reporting 
to  be  designed  under  our  supervision,  to  provide  reasonable  assurance  regarding  the  reliability  of  financial 
reporting and the preparation of financial statements for external purposes in accordance with generally accepted 
accounting principles;

c.  evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report 
our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period 
covered by this report based on such evaluation; and

d.  disclosed in this report any change in the registrant’s internal control over financial reporting that occurred 
during the registrant’s most recent fiscal quarter (the registrant's most recent fiscal quarter in the case of an 
annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal 
control over financial reporting; and

5.  The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control 
over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons 
performing the equivalent functions):

a.  all significant deficiencies and material weaknesses in the design or operation of internal control over financial 
reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize 
and report financial information; and

b.  any fraud, whether or not material, that involves management or other employees who have a significant role 

in the registrant’s internal control over financial reporting.

Date: February 24, 2016

/s/ Douglas S. Aron
Douglas S. Aron
Executive Vice President and Chief Financial
Officer 

 
 
CERTIFICATION OF CHIEF EXECUTIVE
OFFICER UNDER SECTION 906 OF THE 
SARBANES OXLEY ACT OF 2002, 18 U.S.C. § 1350

Exhibit 32.1

In connection with the accompanying report on Form 10-K for the  period ending December 31, 2015 and filed with the 
Securities  and  Exchange  Commission  on  the  date  hereof  (the  “Report”),  I,  George  J.  Damaris,  Chief  Executive  Officer  of 
HollyFrontier Corporation (the “Company”) hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 
of the Sarbanes-Oxley Act of 2002, that to my knowledge:

1.  The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act 

of 1934, as amended; and

2.  The information contained in the Report fairly presents, in all material respects, the financial condition and results of 

operations of the Company.

Date: February 24, 2016

/s/ George J. Damiris
George J. Damiris
Chief Executive Officer and President

 
 
CERTIFICATION OF CHIEF FINANCIAL
OFFICER UNDER SECTION 906 OF THE 
SARBANES OXLEY ACT OF 2002, 18 U.S.C. § 1350

Exhibit 32.2

In  connection  with  the  accompanying  report  on  Form  10-K  for  the  period  ending  December  31,  2015  and  filed  with  the 
Securities and Exchange Commission on the date hereof (the “Report”), I, Douglas S. Aron, Chief Financial Officer of HollyFrontier 
Corporation  (the  “Company”)  hereby  certify,  pursuant  to  18  U.S.C.  Section  1350,  as  adopted  pursuant  to  Section 906  of  the 
Sarbanes-Oxley Act of 2002, that to my knowledge:

1.  The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act 

of 1934, as amended; and

2.  The information contained in the Report fairly presents, in all material respects, the financial condition and results of 

operations of the Company.

Date: February 24, 2016  

/s/ Douglas S. Aron  
Douglas S. Aron 
Executive Vice President and Chief Financial
Officer 

 
 
CORPORATE INFORMATION

CORPORATE OFFICERS

Michael C. Jennings  
Executive Chairman

George J. Damiris  
Chief Executive Officer,  
President and Director

Doug S. Aron  
Executive Vice President and  
Chief Financial Officer

James M. Stump 
Senior Vice President, Refining

Denise C. McWatters 
Senior Vice President, General Counsel  
and Secretary

J.W. Gann Jr. 
Vice President, Controller and  
Chief Accounting Officer

BOARD OF DIRECTORS

Michael C. Jennings  
Executive Chairman

George J. Damiris

Douglas Y. Bech

Leldon E. Echols

R. Kevin Hardage

Robert J. Kostelnik

James H. Lee

Franklin Myers

Michael E. Rose

Tommy A. Valenta

CORPORATE OFFICE

HollyFrontier Corporation
2828 North Harwood, Suite 1300
Dallas, TX 75201-1507
214.871.3555
www.hollyfrontier.com

AUDITORS

Ernst & Young LLP 
Dallas, Texas

STOCK EXCHANGE LISTING

New York Stock Exchange 
Ticker Symbol: HFC

Design: Savage Brands, Houston Texas

STOCK TRANSFER AGENT AND REGISTRAR

Wells Fargo Shareowner Services
1110 Centre Point Curve, Suite 101 
Mendota Heights, MN 55120 
1.800.468.9716 
www.shareownerline.com

Correspondence or questions concerning share  
holdings, transfers, lost certificates, dividends,  
or address or registration changes should be  
directed to Wells Fargo Shareowner Services.

ANNUAL MEETING

The Annual Meeting of Stockholders will be held  
at 8:30 a.m. Central Time, on May 11, 2016, at  
2950 North Harwood, Suite 2100, Dallas, Texas 75201.

SEC FILINGS

A direct link to the filings of HollyFrontier Corporation  
at the U.S. Securities and Exchange Commission website  
is available on the HollyFrontier Corporation website at 
www.hollyfrontier.com on the Investor Relations page.

STOCK PERFORMANCE

Set forth is a line graph comparing, for the period commencing January 1, 
2011, and ending December 31, 2015, the annual percentage change in  
cumulative total stockholder return on our common stock to the cumulative 
total stockholder return of the S&P Composite 500 Stock Index and an 
industry peer group chosen by the Company. The stock price performance 
depicted in the following graph is not necessarily indicative of future price 
performance. The graph will not be deemed to be incorporated by reference 
in any filing by the Company under the Securities Act of 1933 or the Securi-
ties Exchange of 1934, except to the extent that the Company specifically 
incorporates such graph by reference.

HollyFrontier

S&P 500 Index

Peer Group

$400

$300

$200

$100

$0

2010

2011

2012

2013

2014

2015

  HollyFrontier 

100 

  S&P 500 Index 

100 

  Peer Group 

100 

120 

102 

94 

260 

118 

175 

297 

157 

264 

240 

178 

271 

264

181

354

(1)  The amounts shown assume that the value of the investment in HollyFrontier 

and each index was $100 on January 1, 2011 and that all dividends  
were reinvested.

(2)  The Peer Group consists of Alon USA Energy, Inc., Delek US Holdings, Inc., 

Marathon Petroleum Corporation (included from 6/23/2011), Tesoro  
Corporation, Valero Energy Corporation and Western Refining, Inc.

2828 North Harwood
Suite 1300
Dallas, Texas 75201-1507