X0306 4 2021-08-10 0 0001283140 HOLLY ENERGY PARTNERS LP HEP 0001319731 Jennings Michael 2828 N. HARWOOD SUITE 1300 DALLAS TX 75201 1 1 0 0 Chief Executive Officer Common Units 2021-08-10 4 P 0 7500 17.95 A 26377 D The price reported is a weighted average price. These units were purchased in multiple transactions at prices ranging from a low of $17.79 per unit to a high of $18.05 per unit. The reporting person undertakes to provide to Holly Energy Partners, L.P., any security holder of Holly Energy Partners, L.P., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of units sold at each separate price within the range set forth in this footnote. Stacey Foland, Attorney-in-Fact 2021-08-10