HF Sinclair Corporation (NYSE:DINO) today announced the evaluation of a multi-phased expansion of its Midstream refined products footprint across PADD 4 and PADD 5. This initiative is designed to address the increasing supply and demand imbalances in key western markets, particularly Nevada and multiple markets in California, resulting from announced refinery closures on the West Coast. HF Sinclair believes its current geographic footprint and infrastructure provide an advantaged position to quickly and efficiently deliver refined products where the market needs are strongest.

Subject to Board and regulatory approvals, the proposed multi-phased expansion projects under review are projected to enable incremental supply of up to 150,000 barrels per day of product into various markets. The first phase would increase capacity by a projected 35,000 barrels per day to move supply from our Rockies production into Nevada and is targeted to be online in 2028. This initial phase would include expanding the Pioneer Pipeline (a jointly-owned pipeline with Phillips 66) from Sinclair, WY to Salt Lake City, UT and debottlenecking our wholly-owned UNEV Pipeline from Salt Lake City, UT to Las Vegas, NV.

Additional phases under evaluation include the following projects:

Medicine Bow Pipeline: Expansion and reversal of HF Sinclair's wholly-owned pipeline between Denver, CO and Sinclair, WY.
Pioneer Pipeline: Additional expansion of the jointly-owned pipeline with Phillips 66 from Sinclair, WY to Salt Lake City, UT.
UNEV Pipeline: Additional expansion of HF Sinclair's wholly-owned pipeline from Salt Lake City, UT to Las Vegas, NV.
Building a new lateral from Salt Lake City, UT to Reno, NV.

These projects reflect HF Sinclair's strategic focus on asset integration and value chain optimization of our core refining, midstream and marketing businesses. HF Sinclair believes this multi-phased expansion is an example of how we can leverage our competitive advantages and geographic footprint to support our efforts to deliver accretive long-term growth well into the future.

About HF Sinclair Corporation:

HF Sinclair Corporation, headquartered in Dallas, Texas, is an independent energy company that produces and markets high-value light products such as gasoline, diesel fuel, jet fuel, renewable diesel and lubricants and specialty products. HF Sinclair owns and operates refineries located in Kansas, Oklahoma, New Mexico, Wyoming, Washington and Utah. HF Sinclair provides petroleum product and crude oil transportation, terminalling, storage and throughput services to its refineries and the petroleum industry. HF Sinclair markets its refined products principally in the Southwest U.S., the Rocky Mountains extending into the Pacific Northwest and in other neighboring Plains states and supplies high-quality fuels to more than 1,700 branded stations and licenses the use of the Sinclair brand to more than 300 additional locations throughout the country. HF Sinclair produces renewable diesel at two of its facilities in Wyoming and also at its facility in Artesia, New Mexico. In addition, subsidiaries of HF Sinclair produce and market base oils and other specialized lubricants in the U.S., Canada and the Netherlands, and export products to more than 80 countries.

Forward-Looking Statements:

The following is a "safe harbor" statement under the Private Securities Litigation Reform Act of 1995: The statements in this press release relating to matters that are not historical facts, including plans and expectations related to our proposed Western expansion, are "forward-looking statements" 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, including those contained in the Company's filings with the Securities and Exchange Commission (the "SEC"). 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. Forward-looking statements use words such as "anticipate," "project," "will," "expect," "plan," "goal," "forecast," "strategy," "intend," "should," "aim," "proposed," "would," "could," "believe," "may," and similar expressions and statements regarding the Company's plans and objectives for future operations. Although the Company believes that the expectations reflected in these forward-looking statements are reasonable, the Company cannot assure you that the Company's expectations will prove to be correct. Therefore, actual outcomes and results could materially differ from what is expressed, implied or forecast in such statements. Any differences could be caused by a number of factors, including, but not limited to, the demand for and supply of feedstocks, crude oil and refined products, including uncertainty regarding the increasing societal expectations that companies address climate change and greenhouse gas emissions; risks and uncertainties with respect to the actions of actual or potential competitive suppliers and transporters of refined petroleum products or lubricant and specialty products in the Company's markets; the spread between market prices for refined products and market prices for crude oil; the possibility of constraints on the transportation of crude oil, refined products or lubricant and specialty products; the possibility of inefficiencies, curtailments or shutdowns in refinery operations or pipelines, whether due to reductions in demand, accidents, unexpected leaks or spills, unscheduled shutdowns, infection in the workforce, weather events, global health events, civil unrest, expropriation of assets, and other economic, diplomatic, legislative, or political events or developments, terrorism, cyberattacks, vandalism or other catastrophes or disruptions affecting the Company's operations, production facilities, machinery, pipelines and other logistics assets, equipment, or information systems, or any of the foregoing at the Company's suppliers, customers, or third-party providers, and any potential asset impairments resulting from, or the failure to have adequate insurance coverage for or receive insurance recoveries from, such actions; the effects of current and/or future governmental and environmental regulations and policies, including compliance with existing, new and changing environmental and health and safety laws and regulations, related reporting requirements and pipeline integrity programs; the availability and cost of financing to the Company; the effectiveness of the Company's capital investments and marketing strategies; the Company's efficiency in carrying out and consummating construction projects, including the Company's ability to complete announced capital projects on time and within capital guidance; the Company's ability to timely obtain or maintain permits, including those necessary for operations or capital projects; the ability of the Company to acquire complementary assets or businesses to the Company's existing assets and businesses on acceptable terms and to integrate any existing or future acquired operations and realize the expected synergies of any such transaction on the expected timeline; the possibility of vandalism or other disruptive activity, or terrorist or cyberattacks and the consequences of any such activities or attacks; uncertainty regarding the effects and duration of global hostilities, including shipping disruptions in the Red Sea, ongoing conflicts in the Middle East, the Russia-Ukraine war and any associated military campaigns which may disrupt crude oil supplies and markets for the Company's refined products and create instability in the financial markets that could restrict the Company's ability to raise capital; general economic conditions, including uncertainties regarding trade policies, such as the imposition or implementation of tariffs, or economic slowdowns caused by a local or national recession or other adverse economic conditions, such as periods of increased or prolonged inflation; limitations on the Company's ability to make future dividend payments or effectuate share repurchases due to market conditions and corporate, tax, regulatory and other considerations; and other business, financial, operational and legal risks. Additional information on risks and uncertainties that could affect our business prospects and performance is provided in the reports filed by us with the SEC. All forward-looking statements included in this press release are expressly qualified in their entirety by the foregoing 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.

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HF Sinclair Corporation:

Craig Biery, 214-954-6510

Vice President, Investor Relations

or

Trey Schonter, 214-954-6510

Sr. Manager, Investor Relations

HF Sinclair Evaluates Strategic Pipeline Expansion to Western Markets