On February 15, 2018, Cornerstone Acquisition & Management Company LLC sold oil and gas overriding royalty interests in the DJ Basin (Weld County, Colorado) for $5.5 million dollars to an undisclosed buyer. The sale, effective January 1, 2018, included interests across 160+ wells operated by Noble Energy with 4-month average (8/8ths) production of 18,497 BOPD and 26,006 MCFPD.