HollyFrontier Acquires Sonneborn

We are pleased to announce the acquisition of Sonneborn by HollyFrontier Corporation was
completed on February 1, 2019.

With this addition to our organization, HollyFrontier becomes a leading global supplier of
specialty products. Sonneborn’s strong brand recognition and diversified portfolio of products
complements HollyFrontier’s existing lubricants and specialty products business. Sonneborn
will operate within the HollyFrontier Lubricants and Specialty Products (HFLSP) umbrella
along with Petro-Canada Lubricants and Red Giant Oil.

We look forward to strengthening our global footprint through processing and blending
capabilities in North America and Europe and expanding our technical expertise.
HFLSP and its subsidiaries will continue to remain focused on providing quality products and
service to our customers, while maintaining safe and reliable operations.

If you have any questions, please reach out to your account representative.