The RMR Group is a holding company. Through its subsidiary, The RMR Group LLC (RMR LLC), Co. provides management services to four equity real estate investment trusts: Diversified Healthcare Trust, including its subsidiaries; Industrial Logistics Properties Trust, including its subsidiaries; Office Properties Income Trust, including its subsidiaries; and Service Properties Trust, including its subsidiaries. Co. also provides management services to three real estate operating companies: AlerisLife Inc.; Sonesta International Hotels Corporation; and TravelCenters of America Inc. RMR LLC's subsidiary, Tremont Realty Capital LLC, provides advisory services for Seven Hills Realty Trust.