8. Property and Equipment

Depreciation expense was $60.2 million, $49.5 million and $40.4 million for the years ended December 31, 2021, 2020 and 2019, respectively.

Standby Real Estate Program

On May 3, 2021, GPM entered into a standby real estate purchase, designation and lease program agreement (the “Program Agreement”) with Oak Street Real Estate Capital Net Lease Property Fund, LP (“Oak Street”). Pursuant to the Program Agreement, Oak Street has agreed to purchase, subject to the conditions contained in the Program Agreement, up to $1.0 billion of convenience store and gas station real property, including in connection with purchase agreements that GPM or an affiliate thereof, may from time to time enter into to acquire convenience stores and gas stations from third parties (each, a “Property”). Pursuant to the Program Agreement, upon any acquisition of a Property by Oak Street, or an affiliate thereof, GPM, or an affiliate thereof, would enter into a triple-net lease agreement with Oak Street or such affiliate pursuant to which GPM or such affiliate would lease such Property from Oak Street or such affiliate based upon commercial terms contained in the Program Agreement. The purchase price for any Property would similarly be subject to commercial terms agreed upon by GPM and Oak Street in the Program Agreement and if in connection with the acquisition of convenience stores and gas stations from third parties, consistent with the agreed upon purchase price or designation rights with the seller of the real estate. The Program Agreement has a one-year term, during which GPM may not sell or designate any Property pursuant to a sale-leaseback or similar transaction without first offering such Property to Oak Street in accordance with the terms and conditions of the Program Agreement. Certain Properties specified by GPM are not subject to the foregoing right of first offer, and the Program Agreement does not obligate GPM to sell any Property, or acquire any property from a third party for purposes of its sale, to Oak Street or assign the right to acquire the third party’s real estate to Oak Street, unless GPM elects, in its sole discretion, to enter into a sale-leaseback, designation or similar transaction governed by the Program Agreement.

In the fourth quarter of 2021, Oak Street purchased from third parties approximately $150 million of convenience store and gas station real property related to sites GPM leased as part of the Empire Acquisition in 2020 and the E-Z Mart acquisition in 2018. The Company had options to acquire ownership rights in these sites. Simultaneously, GPM entered into three triple-net lease agreements with Oak Street to lease the properties for a term of 20 years, with six five-year renewal options, which were classified as operating leases in the consolidated statement of operations for the year ended December 31, 2021. As a result of accounting for these transactions as sale-leasebacks, the Company recorded a $11.1 million loss on the Empire Acquisition sites and a $11.0 million gain on the E-Z Mart acquisition sites included in other expenses, net on the consolidated statement of operations, including the write-off of the remaining value of the unexercised options to acquire ownership rights which expired. In addition, as part of these transactions, the Company purchased convenience store and gas station real property for total consideration of approximately $9.0 million.