Sinclair Oil (Sinclair), an HF Sinclair (NYSE: DINO) brand, today announced its second annual DINO Days (June 1-3, 2025), a customer promotion in honor of National Dinosaur Day.

After the success of last year’s DINO Day, Sinclair has expanded the campaign from one day to three. Throughout the first three days of June, DINO Days will feature trivia and selfie sweepstakes, where one lucky winner in each sweepstakes will receive a $250 Sinclair gift card, plus additional chances to win DINO swag. On June 3, Sinclair customers can save up to 30 cents per gallon on Sinclair’s Premium Gasoline* with DINOCARE^®.

To access the June 3 gasoline savings, customers must use DINOPAY^®, Sinclair’s easy-to-use mobile payment app, available for free on the Apple App Store or Google Play. Information about the DINO Days gasoline discount promotion and DINOPAY^® is available at SinclairOil.com/DINODays.

“Our DINO Days promotion matches the size and scale of Sinclair’s green DINO icon, who has been making travelers smile for almost 100 years,” said Fergie Theriault, vice president of branded marketing for HF Sinclair. “Why not celebrate National Dinosaur Day with extra savings on June 3 and experience the benefits of DINOCARE^®, our TOP TIER™ gasoline?”

Spotted on station signage from coast to coast, the Sinclair dinosaur icon first became linked with the energy company as part of advertising campaigns in the 1930s. Since then, the green dinosaur has become a symbol for Sinclair Oil and its parent company, HF Sinclair, found on fuel pumps, building signage, merchandise and more.

For additional information about Sinclair Oil and HF Sinclair, visit SinclairOil.com.

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 other 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 1,600 branded stations and licenses the use of the Sinclair brand at 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.

About Sinclair Oil

Sinclair Oil, an HF Sinclair brand, is one of the oldest continuous brands in the energy business. Recognized for its iconic dinosaur, there are more than 1,800 independent Sinclair-branded and licensed stations throughout the country. DINOPAY® is an app-based payment system that allows users to pay for fuel and in-store items with their mobile device, track receipts, utilize fuel discounts and locate the nearest Sinclair location.

*Premium gasoline is generally considered any type of gasoline with an octane level of 91 or greater, with 91 octane and 93 octane being the most common versions of premium gasoline available at gas stations in the United States (either may be called “super” or “super-premium” in some states).

Terms and conditions for DINO Days promotions are available at SinclairOil.com/DINODays/Sweepstakes-Rules

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