CHATHAM – The property at the downtown rotary that houses Cumberland Farms has been sold.

The nearly one-acre lot was purchased May 19 by Obsidian ML6 LLC, a San Diego, Calif.-based real estate investment company, for $5,161,138.

According to a spokesperson for the Westborough-based convenience store company, the sale was part of a recent sales-leaseback transaction that saw Cumberland Farms sell this and other real estate properties to Obsidian. Cumberland Farms now leases the location, Emily Pickering, vice president of the public relations firm The Castle Group, said in an email.

The store will continue to operate as a Cumberland Farms, she wrote.

Cumberland Farms purchased the property, which sits at the gateway to Chatham’s downtown business district, in 2015 for $1,450,000. Chatham Mobil had previously operated at the site for many years, and it was subsequently the site of a Christie’s Market for a short time before being converted to a Cumberland Farms convenience store and gas station.

According to the Massachusetts Secretary of State’s corporate database, Obsidian ML6 LLC is a corporation registered in Delaware with principal offices in San Diego, listed as MDC Obsidian Holdings, LLC. Its resident agent in Massachusetts is listed as Corporation Service Company at 84 State St. in Boston. Attempts to contact the company were unsuccessful.