According to a Reuters report, the 470 workers at the mine will keep their jobs.
UK Coal chief Gerry Spindler said the sale will enable UK Coal to focus on its core deep mining activities, while reducing operational risks, and continuing to develop its expanding property business.
With a history dating back to 1907, Maltby extracts coal from the Parkgate seam, some 1040m below ground.
Access to the reserves is gained by two shafts with the capability of winding up to 1500 tonnes of mineral an hour to the surface.
During September last year, Maltby suffered a roof fall and reported 422,000t in lost production – affecting UK Coal’s overall results.