•our previously existing master leases with Five Star for all of our senior living communities that Five Star leased, as well as our previously existing management agreements and pooling agreements with Five Star for our senior living communities that Five Star managed, were terminated and replaced with the Five Star management agreements;

•as consideration for these share issuances, we provided Five Star with $75,000 of additional consideration by assuming certain of Five Star's working capital liabilities and cash payments to Five Star, resulting in a gain on lease termination of $22,896 for the year ended December 31, 2020 in our consolidated statements of comprehensive income (loss).

Also pursuant to the Transaction Agreement: (1) commencing February 1, 2019, the aggregate amount of monthly minimum rent payable to us by Five Star under our previously existing master leases with Five Star was set at $11,000 as of February 1, 2019, subject to adjustment, and subsequently reduced in accordance with the Transaction Agreement as a result of our subsequent sales of certain of the leased senior living communities, and no additional rent was payable to us by Five Star from such date until the Conversion Time; and (2) as of April 1, 2019, we purchased from Five Star $49,155 of unencumbered Qualifying PP&E (as defined in the Transaction Agreement) related to our senior living communities leased and operated by Five Star.

Pursuant to the Five Star management agreements, Five Star receives a management fee equal to 5% of the gross revenues realized at the applicable senior living communities plus reimbursement for its direct costs and expenses related to such communities. Commencing with calendar year 2021, Five Star may receive an annual incentive fee equal to 15% of the amount by which the annual earnings before interest, taxes, depreciation and amortization, or EBITDA, of all communities on a combined basis exceeds the target EBITDA for all communities on a combined basis for such calendar year, provided that in no event shall the incentive fee be greater than 1.5% of the gross revenues realized at all communities on a combined basis for such calendar year. The target EBITDA for those communities on a combined basis is increased annually based on the greater of the annual increase of the consumer price index, or CPI, or 2%, plus 6% of any capital investments funded at the managed communities on a combined basis in excess of the target capital investment. Unless otherwise agreed, the target capital investment increases annually based on the greater of the annual increase of CPI or 2%.

The Five Star management agreements expire in 2034, subject to Five Star's right to extend for two consecutive five year terms if Five Star achieves certain performance targets for the combined managed communities portfolio, unless earlier terminated. The Five Star management agreements also provide us with the right to terminate the Five Star management agreement for any community that does not earn 90% of the target EBITDA for such community for two consecutive calendar years or in any two of three consecutive calendar years, with the measurement period commencing January 1, 2021 (and the first termination not possible until the beginning of calendar year 2023), provided we may not in any calendar year terminate communities representing more than 20% of the combined revenues for all communities for the calendar year prior to such termination. Pursuant to a guaranty agreement dated as of January 1, 2020 made by Five Star in favor of our applicable

On April 1, 2019, we concluded that the Restructuring Transaction constituted a reconsideration event requiring us to assess whether we held a controlling financial interest in Five Star. As a result of this assessment, we determined that Five Star was a VIE effective as of the date of the Transaction Agreement. We determined not to consolidate Five Star in our consolidated financial statements, as we do not have the power to direct the activities of Five Star that most significantly impact Five Star's economic performance and therefore are not the primary beneficiary of Five Star. Effective January 1, 2020, we determined that Five Star is not a VIE and we will account for our equity investment in Five Star using the equity method of accounting because we are deemed to exert significant influence, but not control, over Five Star's most significant activities. We have elected to use the fair value option to account for our investment in Five Star.

Our Senior Living Communities Formerly Leased by Five Star. Prior to the Conversion Time, we leased senior living communities to Five Star pursuant to five master leases with Five Star, each of which was terminated as of January 1, 2020 pursuant to the Transaction Agreement.

Under our previously existing leases with Five Star, Five Star paid us annual rent plus percentage rent equal to 4.0% of the increase in gross revenues at certain of our senior living communities over base year gross revenues as specified in the applicable leases. Pursuant to the Transaction Agreement, commencing February 1, 2019, no percentage rent was payable to us by Five Star and annual rent payable to us by Five Star was adjusted as noted above. We previously determined percentage rent due under these leases annually and recognized it when all contingencies were met, which was typically at year end. We recognized total rental income from Five Star of $137,898 and $212,622 (including percentage rent of $538 and $5,525) for the years ended December 31, 2019 and 2018, respectively. As of December 31, 2019 and 2018, our net receivables from Five Star were $1,989 and $18,697, respectively, and those amounts are included in due from affiliate in our consolidated balance sheets. No rent or percentage rent is payable to us by Five Star as of December 31, 2020.

Our previously existing leases with Five Star were “triple net” leases, which generally required Five Star to pay rent and all property operating expenses, to indemnify us from liability which may arise by reason of our ownership of the properties, to maintain the properties at Five Star's expense, to remove and dispose of hazardous substances on the properties in compliance with applicable law and to maintain insurance on the properties for Five Star's and our benefit.

Under our previously existing leases with Five Star, Five Star could request that we purchase certain improvements to the leased communities and, until we entered into the Transaction Agreement, the annual rent payable to us by Five Star would increase in accordance with a formula specified in the applicable lease in return for such purchases. During the year ended December 31, 2018, we purchased $17,956 of such improvements and Five Star's annual rent payable to us increased by $1,433, in accordance with the terms of the applicable leases. Pursuant to the Transaction Agreement, the $111,603 of improvements to communities leased to Five Star, including $49,155 of fixed assets and improvements that were purchased pursuant to the Transaction Agreement as discussed above, that we funded during the year ended December 31, 2019 did not result in increased rent payable by Five Star.

As of December 31, 2019, Five Star was our most significant tenant. The following is a summary of the assets leased to and revenues earned from Five Star as a tenant as of and for the years ended December 31, 2019 and 2018 compared to all our other assets and revenues from all sources:


	As of December 31, 2019				As of December 31, 2018
	Gross Book Value of Real Estate Assets (1)		% of Total		Gross Book Value of Real Estate Assets (1)		% of Total
Five Star (2)	$	2,286,951	27.2	%	$	2,253,853	26.7	%
All others (3)	6,133,672		72.8	%	6,174,791		73.3	%
	$	8,420,623	100.0	%	$	8,428,644	100.0	%

(1) Represents the gross book value of real estate assets at cost plus certain acquisition costs, before depreciation and purchase price allocations, less impairment write downs, if any. Five Star also manages our managed senior living communities. The gross book value of real estate assets of $1,920,070 as of December 31, 2019 for those managed senior living communities Five Star then managed is included in the "All others" category.

Our Senior Living Communities Managed by Five Star. Five Star managed 235, 78 and 76 senior living communities for our account as of December 31, 2020, 2019 and 2018, respectively. We lease our senior living communities that are managed by Five Star to our TRSs, and Five Star manages these communities pursuant to long term management agreements. As described above, pursuant to the Restructuring Transaction, effective January 1, 2020, we replaced our long term management and pooling agreements with Five Star with the Five Star management agreements, the terms of which are described above.

We incurred management fees payable to Five Star of $62,880, $15,327 and $14,426 for the years ended December 31, 2020, 2019 and 2018, respectively. These amounts are included in property operating expenses or have been capitalized, as appropriate, in our consolidated financial statements. For the year ended December 31, 2020, $60,413 of the total management fees were expensed to property operating expenses in our consolidated statements of income (loss) and $2,467 were capitalized in our consolidated balance sheets.


	Year Ended December 31,
Revenue from contracts with customers:	2020		2019
Basic housing and support services	$	856,687	$	353,699
Medicare and Medicaid programs	173,878		31,324
Private pay and other third party payer SNF services	174,246		48,574
Total residents fees and services	$	1,204,811	$	433,597

In addition to providing management services to us, Five Star also provides certain other services to residents at some of the senior living communities it manages for us, such as rehabilitation services. At senior living communities Five Star manages for us where Five Star provides rehabilitation services on an outpatient basis, the residents, third party payers or government programs pay Five Star for those rehabilitation services. At senior living communities Five Star manages for us where Five Star provides both inpatient and outpatient rehabilitation services, we generally pay Five Star for those rehabilitation services and charges for these services are included in amounts charged to residents, third party payers or government programs. We incurred fees of $25,687, $5,920 and $6,442 for the years ended December 31, 2020, 2019 and 2018, respectively, with respect to rehabilitation services Five Star provided at senior living communities it manages for us that are payable by us. These amounts are included in property operating expenses in our consolidated statements of comprehensive income (loss).

As a result of routine monitoring protocols that are a part of Five Star's compliance program activities related to Medicare billing, Five Star discovered potentially inadequate documentation at one of our senior living communities that Five Star manages. This monitoring was not initiated in response to any specific complaint or allegation but rather was of the type that Five Star periodically undertakes to test its compliance with applicable Medicare billing rules. We and Five Star voluntarily disclosed this matter to the United States Department of Health and Human Services, Office of the Inspector General, or the OIG, pursuant to the OIG's Provider Self-Disclosure Protocol. In January 2021, we and Five Star settled this matter with the OIG and we agreed to pay approximately $5,763 in exchange for a customary release, but we and Five Star did not admit any liability. We paid that amount to the OIG in January 2021. Five Star refunded to us $115 of management fees it previously received relating to the Medicare payments we refunded to the OIG. With respect to this settlement amount, we accrued a revenue reserve of $3,842 at December 31, 2020 for historical Medicare payments we received and agreed to repay to the OIG and we recorded expenses of $1,921 for the year ended December 31, 2020 for OIG-imposed penalties.

Since January 1, 2020, we sold certain senior living communities that were then managed by Five Star. We and Five Star terminated our management agreements for these senior living communities in connection with these sales. We and Five Star have also identified additional senior living communities for sale that are currently managed by Five Star. If these sales are consummated, we and Five Star will terminate the management agreements for these senior living communities. See Note 3 for further information regarding these sales.

We lease to Five Star space at certain of our senior living communities that Five Star manages that Five Star uses to provide certain inpatient and outpatient rehabilitation and wellness services. We recognized a reduction in property operating expenses of $1,561 for the year ended December 31, 2020, with respect to these leases.