This Quarterly Report on Form 10-Q 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-Q, including, but not limited to, statements regarding funding of capital expenditures and distributions distributable cash flow coverage and leverage targets, and statements under “Results of Operations” and “Liquidity and Capital Resources” in Item 2 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part I are forward-looking statements. Forward-looking statements use words such as “anticipate,” “project,” “expect,” “will,” “plan,” “goal,” “forecast,” “intend,” “strategy,” “should,” “would,” “could,” “believe,” “may,” and similar expressions and statements regarding our plans and objectives for future operations are intended to identify forward-looking statements. These statements are based on our beliefs and assumptions and those of our general partner using currently available information and expectations as of the date hereof, are not guarantees of future performance and involve certain risks and uncertainties. Although we and our general partner believe that such expectations reflected in such forward-looking statements are reasonable, neither we nor our general partner can give assurance that our expectations will prove to be correct. 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. Our forward-looking statements are subject to a variety of risks, uncertainties and assumptions. If one or more of these risks or uncertainties materialize, or if underlying assumptions prove incorrect, our actual results may vary materially from those anticipated, estimated, projected or expected. Certain factors could cause actual results to differ materially from results anticipated in the forward-looking statements.statements or affect our unit price. These factors include, but are not limited to:

Holly Energy Partners, L.P. (“HEP”), together with its consolidated subsidiaries, is a publicly held master limited partnership. We commenced operations on July 13, 2004, upon the completion of our initial public offering. On March 14, 2022 (the “Closing Date”), HollyFrontier Corporation (“HFC”) and HEP announced the establishment of HF Sinclair Corporation, a Delaware corporation (“HF Sinclair”), as the new parent holding company of HFC and HEP and their subsidiaries, and the completion of their respective acquisitions of Sinclair Oil Corporation (now known as Sinclair Oil LLC (“Sinclair Oil”))LLC) and Sinclair Transportation Company LLC (“Sinclair Transportation”) from REH Company (formerly known as The Sinclair Companies, and referred to herein as “REH Company”). On the Closing Date, pursuant to that certain Business Combination Agreement, dated as of August 2, 2021 (as amended on March 14, 2022, the “Business Combination Agreement”), by and among HFC, HF Sinclair, Hippo Merger Sub, Inc., a wholly owned subsidiary of HF Sinclair (“Parent Merger Sub”), REH Company, and Hippo Holding LLC (now known as Sinclair Holding LLC), a wholly owned subsidiary of REH Company (the “Target Company”), HF Sinclair completed its acquisition of the Target Company by effecting (a) a holding company merger in accordance with Section 251(g) of the Delaware General Corporation Law whereby HFC merged with and into Parent Merger Sub, with HFC surviving such merger as a direct wholly owned subsidiary of HF Sinclair (the “HFC Merger”), and (b) immediately following the HFC Merger, a contribution whereby REH Company contributed all of the equity interests of the Target Company to HF Sinclair in exchange for shares of HF Sinclair, resulting in the Target Company becoming a direct wholly owned subsidiary of HF Sinclair (together with the HFC Merger, the “HFC Transactions”).

As of March 31,September 30, 2023, HF Sinclair and its subsidiaries owned a 47% limited partner interest and the non-economic general partner interest in HEP.

Additionally, on the Closing Date, pursuant to that certain Contribution Agreement, dated August 2, 2021 (as amended on March 14, 2022, the “Contribution Agreement”), by and among REH Company, Sinclair Transportation and HEP, HEP acquired all of the outstanding equity interests of Sinclair Transportation from REH Company in exchange for 21 million newly issued common limited partner units of HEP (the “HEP Units”), representing 16.6% of the pro forma outstanding HEP Units with a value of approximately $349 million based on HEP’s fully diluted common limited partner units outstanding and closing unit price on March 11, 2022, and cash consideration equal to $329.0 million, inclusive of final working capital adjustments pursuant to the Contribution Agreement for an aggregate transaction value of $678.0 million (the “HEP Transaction” and together with the HFC Transactions, the “Sinclair Transactions”). Of the 21 million HEP Units, 5.29 million units were originally held in escrow to secure REH Company’s renewable identification numbers (“RINs”) credit obligations to HF Sinclair under Section 6.22 of the Business Combination Agreement. The HEP unitsUnits held in escrow were released to REH Company in April 2023 upon their satisfaction of the RINs credit obligations relating thereto. The cash consideration was funded through a draw under HEP’s senior secured revolving credit facility. The HEP Transaction was conditioned on the closing of the HFC Transactions, which occurred immediately following the HEP Transaction.

Sinclair Transportation, which together with its subsidiaries, ownsowned integrated crude and refined products pipelines and terminal assets, including approximately 1,200 miles of integrated crude and refined product pipeline supporting the Target Company refineries and other third party refineries, eight product terminals and two crude terminals with approximately 4.5 million barrels of operated storage. In addition, HEP acquired Sinclair Transportation’s interests in three pipeline joint ventures for crude gathering and product offtake.

References herein to HEP with respect to time periods prior to March 14, 2022, include HEP and its consolidated subsidiaries and do not include Sinclair Transportation and its consolidated subsidiaries (collectively, the “Acquired Sinclair Businesses”). References herein to HEP with respect to time periods from and after March 14, 2022 include the operations of the Acquired Sinclair Businesses.

We operate in two reportable segments, a Pipelines and Terminals segment and a Refinery Processing Unit segment. Disclosures around these segments are discussed in Note 16.

We generate revenues by charging tariffs for transporting petroleum products and crude oil through our pipelines, by charging fees for terminalling and storing refined products and other hydrocarbons, providing other services at our storage tanks and terminals and by charging a tolling fee per barrel or thousand standard cubic feet of feedstock throughput in our refinery processing units. We do not take ownership of products that we transport, terminal, store or process, and therefore, we are not exposed directly to changes in commodity prices.

The consolidated financial statements included herein have been prepared without audit, pursuant to the rules and regulations of the SEC. The interim financial statements reflect all adjustments, which, in the opinion of management, are necessary for a fair presentation of our results for the interim periods. Such adjustments are considered to be of a normal recurring nature. Although certain notes and other information required by U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted, we believe that the disclosures in these consolidated financial statements are adequate to make the information presented not misleading. These consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2022. Results of operations for interim periods are not necessarily indicative of the results of operations that will be realized for the year ending December 31, 2023.

The consolidated financial statements include our accounts and those of subsidiaries and joint ventures that we control. All significant intercompany transactions and balances have been eliminated.

Most of our acquisitions from HFC occurred while we were a consolidated variable interest entity (“VIE”) of HFC. Therefore, as an entity under common control with HFC, we recorded these acquisitions on our balance sheets at HFC'sHFC’s historical basis instead of our purchase price or fair value.

Goodwill represents the excess of our cost of an acquired business over the fair value of the assets acquired, less liabilities assumed. Goodwill is not subject to amortization and is tested annually or more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. Our goodwill impairment testing first entails either a quantitative assessment or an optional qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If we determine that based on the qualitative factors that it is more likely than not that the carrying amount of the reporting unit is greater than its fair value, a quantitative test is performed in which we estimate the fair value of the related reporting unit. If the carrying amount of a reporting unit exceeds its fair value, the goodwill of that reporting unit is impaired, and we measure goodwill impairment as the excess of the carrying amount of the reporting unit over the related fair value.

We evaluate long-lived assets, including finite-lived intangible 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.

We have other cost reimbursement provisions in our throughput / storage agreements providing that customers (including HF Sinclair) reimburse us for certain costs. Such reimbursements are recorded as revenue or deferred revenue depending on the nature of the cost. Deferred revenue is recognized over the remaining contractual term of the related throughput agreement.

We adopted ASC 842 effective January 1, 2019, and elected to adopt using the modified retrospective transition method and practical expedients, both of which are provided as options by the standard and further defined below.

At inception, we determine if an arrangement is or contains a lease. Right-of-use assets represent our right to use an underlying asset for the lease term, and lease liabilities represent our payment obligation under the leasing arrangement. Right-of-use assets and lease liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. We use our estimated incremental borrowing rate (“IBR”) to determine the present value of lease payments as most of our leases do not contain an implicit rate. Our IBR represents the interest rate which we would pay to borrow, on a collateralized basis, an amount equal to the lease payments over a similar term in a similar economic environment. We use the implicit rate when readily determinable.

Operating leases are recorded in operating lease right-of-use assets and current and noncurrent operating lease liabilities on our consolidated balance sheet. Finance leases are included in properties and equipment, current finance lease liabilities and noncurrent finance lease liabilities on our consolidated balance sheet.

When renewal options are defined in a lease, our lease term includes an option to extend the lease when it is reasonably certain we will exercise that option. Leases with a term of 12 months or less are not recorded on our balance sheet, and lease expense is

Customer contracts that contain leases are generally classified as either operating leases, direct finance leases or sales-type leases. We consider inputs such as the lease term, fair value of the underlying asset and residual value of the underlying assets when assessing the classification.

On August 2, 2021, in connection with the Contribution Agreement, HEP, Holly Logistic Services, L.L.C., the ultimate general partner of HEP (“HLS”) and Navajo Pipeline Co., L.P., the sole member of HLS (the “Sole Member”), entered into a unitholders agreement (the “Unitholders Agreement”) by and among HEP, HLS, the Sole Member, REH Company and the stockholders of REH Company (each a “Unitholder” and collectively, the “Unitholders,” and along with REH Company and each of their permitted transferees, the “REH Parties”), which became effective on the Closing Date.

Pursuant to the Unitholders Agreement, the REH Parties have the right to nominate, and have nominated, one person to the board of directors of HLS until such time that (x) the REH Parties beneficially own less than 10.5 million HEP Units or (y) the HEP Units beneficially owned by the REH Parties constitute less than 5% of all outstanding HEP Units. The Unitholders Agreement also subjectssubjected 15.75 million of the HEP Units issued to the REH Parties (the “Restricted Units”) to a “lock-up” period commencing on the Closing Date, during which the REH Parties arewere prohibited from selling the Restricted Units, except for certain permitted transfers. One-third of such Restricted Units were released from such restrictions on the date that was six months after the closing,Closing Date, one-third of the Restricted Units were released from such restrictions on the first anniversary of the Closing Date, and the remainder will bewere released from such restrictions on June 14, 2023, the date that iswas 15 months from the Closing Date.

Under the terms of the Contribution Agreement, HEP acquired Sinclair Transportation, which together with its subsidiaries, owned REH Company’s integrated crude and refined products pipelines and terminal assets, including approximately 1,200 miles of integrated crude and refined product pipelines supporting the REH Company refineries and other third-party refineries, eight product terminals and two crude terminals with approximately 4.5 million barrels of operated storage. In addition, HEP acquired Sinclair Transportation’s interests in three pipeline joint ventures for crude gathering and product offtake including: Saddle Butte Pipeline III, LLC (25.06% non-operated interest); Pioneer Investments Corp. (49.995% non-operated interest); and UNEV (the 25% non-operated interest not already owned by HEP, resulting in UNEV becoming a wholly owned subsidiary of HEP).

The following tables present the purchase consideration and final purchase price allocation to the assets acquired and liabilities assumed on March 14, 2022:

(1) Based on the HEP closing unit price on March 11, 2022.2022

(2) Net of cash acquired

The fair value of properties, plants and equipment was based on the combination of the cost and market approaches. Key assumptions in the cost approach include determining the replacement cost by evaluating recently published data and adjusting replacement cost for physical deterioration, functional and economic obsolescence. We used the market approach to measure the value of certain assets through an analysis of recent sales or offerings of comparable properties.

The fair value of the equity method investments were based on a combination of valuation methods including discounted cash flows and the guideline public company method.

The fair values discussed above were based on significant inputs that are not observable in the market and, therefore, represent Level 3 measurements. See Note 6.

The fair values of all other current receivable and payables were equivalent to their carrying values due to their short-term nature.

Contemporaneous with the closing of the Sinclair Transactions, HEP and HFC amended certain intercompany agreements, including the master throughput agreement, to include within the scope of such agreements certain of the assets acquired by HEP pursuant to the Contribution Agreement.

The Cushing Connect Joint Venture legal entities are variable interest entities (“VIEs”)VIEs as defined under GAAP. A legal entity is a VIE if it has any one of the following characteristics: (i) the entity does not have sufficient equity at risk for the entity to finance its activities without additional subordinated financial support; (ii) the at risk equity holders, as a group, lack the

With the exception of the assets of HEP Cushing, creditors of the Cushing Connect Joint Venture legal entities have no recourse to our assets. Any recourse to HEP Cushing would be limited to the extent of HEP Cushing'sCushing’s assets, which other than its investment in Cushing Connect Joint Venture, are not significant. Furthermore, our creditors have no recourse to the assets of the Cushing Connect Joint Venture legal entities.

Revenues are generally recognized as products are shipped through our pipelines and terminals, feedstocks are processed through our refinery processing units or other services are rendered. See Note 1 for further discussion of revenue recognition.

See Note 1 for further discussion of lease accounting.

As a lessee, we lease land, buildings, pipelines, transportation and other equipment to support our operations. These leases can be categorized into operating and finance leases.

Our leases have remaining terms of less than 1 year to 2221 years, some of which include options to extend the leases for up to 10 years.

We have finance lease obligations related to vehicle leases with initial terms of 33 to 48 months. The total cost of assets under finance leases was $7.8$8.2 million and $7.6 million as of March 31,September 30, 2023 and December 31, 2022, respectively, with accumulated depreciation of $4.1 million and $4.0 million as of March 31,September 30, 2023 and December 31, 2022, respectively. We include depreciation of finance leases in depreciation and amortization in our consolidated statements of income.

In addition, we have a finance lease obligation related to a pipeline lease with an initial term of 10 years with one remaining subsequent renewal option for an additional 10 years.