our deferred rent obligations was $22.0 million as of December 31, 2021. We pay our deferred rent obligations in equal quarterly amounts, and the remaining amount of the obligation is scheduled to be fully paid by January 31, 2023.
Under the SVC Leases, we may request that SVC purchase approved amounts of renovations, improvements and equipment at the leased properties in return for increases in our annual minimum rent according to the following formula: the annual minimum rent will be increased by an amount equal to the amount paid by SVC multiplied by the greater of (i) 8.5% or (ii) a benchmark U.S. Treasury interest rate plus 3.5%. During the year ended December 31, 2021, we did not sell to SVC any improvements we made to properties leased from SVC.
As permitted by the SVC Leases, we sublease a portion of certain travel centers to third parties to operate other retail operations. We recognized sublease rental income of approximately $1.9 million for the year ended December 31, 2021.
Sonesta Franchising Agreement. During 2021, we determined to rebrand a hotel owned by SVC and operated by us in Sparks Nevada. We entered into a franchising agreement with Sonesta RL Hotels Franchising Inc., a subsidiary of Sonesta International Hotels Corporation (“Sonesta”) to brand the hotel American’s Best Value Inn for an initial term of six years, with renewal options. Pursuant to this franchise agreement, beginning in July 2022, we will pay a monthly fee of $3,207, or an aggregate fee of $0.2 million over six years. Sonesta is a private company and one of our Managing Directors, Adam Portnoy, is the largest owner and a director of Sonesta, and Sonesta is SVC’s largest hotel operator. Another of Sonesta’s directors serves as RMR’s and RMR Inc.’s executive vice president, general counsel and secretary and as our Secretary. Sonesta’s president and chief executive officer is a managing trustee and the former president and chief executive officer of SVC and an officer of RMR, and certain other executive officers of Sonesta are also officers of RMR. In addition, certain other officers and employees of Sonesta are former employees of RMR. RMR also provides certain services to Sonesta.
Relationships with RMR and Others Related to It. We have relationships and historical and continuing transactions with RMR, RMR Inc. and others related to them, including other RMR Clients and some of which have directors, trustees or officers who are also our Directors or officers. The Chair of our Board and one of our Managing Directors, Adam Portnoy, as the sole trustee of ABP Trust, is the controlling shareholder of RMR Inc. and is a managing director and the president and chief executive officer of RMR Inc. and an officer and employee of RMR. Our other Managing Director and Chief Executive Officer, Executive Vice President, Chief Financial Officer and Treasurer, Executive Vice President and General Counsel, and Secretary are officers and employees of RMR. Some of our Independent Directors also serve as independent trustees or independent directors of other RMR Clients. RMR Inc. is the managing member of RMR. RMR provides management services to both the Company and SVC, and Mr. Portnoy also serves as the chair of the boards and as a managing trustee or managing director of each of the other RMR Clients, including serving as the chair of the board of trustees and as a managing trustee of SVC. As of December 31, 2021, RMR owned 659,000 Common Shares, representing approximately 4.4% of our Common Shares.
Because at least 80% of Messrs. Pertchik’s, Crage’s and Young’s business time was devoted to services to us during 2021, 80% of Messrs. Pertchik’s, Crage’s and Young’s total cash compensation (that is, the combined base salary and cash bonus paid by the Company and RMR) was paid by the Company and the remainder was paid by RMR. Messrs. Pertchik, Crage and Young are also eligible to participate in certain RMR benefit plans and to receive share awards from RMR Inc. and other RMR Clients. We believe the compensation we paid to these officers reasonably reflected their division of business time and efforts; however, periodically, these individuals may divide their business time and efforts differently than they do currently and their compensation from us may become disproportionate to this division.
Additionally, each of Messrs. Pertchik, Crage, and Young during 2021 received share awards from RMR Inc. and other RMR Clients, including SVC, in their capacities as officers of RMR.
During 2021, we purchased 43,000 Common Shares, at the closing price of the Common Shares on the Nasdaq on the date of purchase, from certain of our officers and employees and officers and employees of RMR in satisfaction of tax withholding and payment obligations in connection with the vesting of awards of Common Shares.