What changed in this filing

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Item 1. Financial Statements

2021-05-05 compared with 2020-11-05 · 217 added, 478 removed, 340 unchanged (67% of the section changed)

3 unchanged sentences

(dollars in thousands, except share data)

September 30, December 31,

March 31, December 31,

Real estate properties:

11 unchanged sentences

Liabilities and Equity

Unsecured revolving credit facility $ — $ 537,500

Unsecured term loans, net 198,913 448,741

Revolving credit facility $ 800,000 $ —

Term loan, net — 199,049

Senior unsecured notes, net 3,101,318 2,608,189

8 unchanged sentences

Common shares of beneficial interest, $ .01 par value:

300,000,000 shares authorized, 238,268,478 and 237,897,163 shares issued and outstanding, respectively

300,000,000 shares authorized, 238,268,478 shares issued and outstanding for both periods presented

Additional paid in capital 4,614,132 4,613,904

12 unchanged sentences

(amounts in thousands, except per share data)

Three Months Ended September 30, Nine Months Ended September 30,

2020 2019 2020 2019

Three Months Ended March 31,

Rental income $ 102,758 $ 110,498

8 unchanged sentences

(Loss) gain on sale of properties ( 122 ) 2,782

Dividend income — — — 1,846

Gains and losses on equity securities, net 12,510 40 14,541 ( 41,476 )

Losses on equity securities, net ( 8,339 ) ( 9,943 )

Interest and other income 2,835 138

3 unchanged sentences

Loss on early extinguishment of debt ( 2,040 ) ( 246 )

Loss from continuing operations before income tax (expense) benefit and equity in earnings of an investee ( 105,423 ) ( 28,175 ) ( 118,339 ) ( 32,922 )

(Loss) income from continuing operations before income tax (expense) benefit ( 65,945 ) 10,700

Income tax (expense) benefit ( 238 ) 443

Equity in earnings of an investee — 83 — 617

Net loss ( 105,788 ) ( 27,946 ) ( 119,387 ) ( 32,258 )

Net (loss) income ( 66,183 ) 11,143

Net income attributable to noncontrolling interest ( 1,322 ) ( 1,408 )

Net loss attributable to common shareholders $ ( 106,888 ) $ ( 29,390 ) $ ( 123,225 ) $ ( 36,537 )

Other comprehensive (loss) income:

Equity in unrealized (loss) gain of an investee — ( 46 ) — 91

Other comprehensive (loss) income — ( 46 ) — 91

Comprehensive loss ( 105,788 ) ( 27,992 ) ( 119,387 ) ( 32,167 )

Comprehensive income attributable to noncontrolling interest ( 1,100 ) ( 1,444 ) ( 3,838 ) ( 4,279 )

Comprehensive loss attributable to common shareholders $ ( 106,888 ) $ ( 29,436 ) $ ( 123,225 ) $ ( 36,446 )

Net (loss) income attributable to common shareholders $ ( 67,505 ) $ 9,735

Weighted average common shares outstanding (basic) 237,834 237,669

1 unchanged sentence

Per common share amounts (basic and diluted):

Net loss attributable to common shareholders $ ( 0.45 ) $ ( 0.12 ) $ ( 0.52 ) $ ( 0.15 )

Net (loss) income attributable to common shareholders $ ( 0.28 ) $ 0.04

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

9 unchanged sentences

238,268,478 $ 2,383 $ 4,613,904 $ 1,913,109 $ ( 4,033,559 ) $ 2,495,837 $ 123,385 $ 2,619,222

Net income — — — 9,735 — 9,735 1,408 11,143

Distributions — — — — ( 35,684 ) ( 35,684 ) — ( 35,684 )

Distribution to common shareholders of the right to receive Five Star Senior Living Inc.

common stock — — — — ( 59,801 ) ( 59,801 ) — ( 59,801 )

Share grants — — 249 — — 249 — 249

Share repurchases ( 3,438 ) — ( 21 ) — — ( 21 ) — ( 21 )

Distributions to noncontrolling interest — — — — — — ( 5,767 ) ( 5,767 )

Balance at March 31, 2020:

237,893,725 2,379 4,612,739 2,062,297 ( 4,026,418 ) 2,650,997 136,172 2,787,169

Net (loss) income — — — ( 67,505 ) — ( 67,505 ) 1,322 ( 66,183 )

1 unchanged sentence

Share grants — — 228 — — 228 — 228

Share repurchases ( 1,757 ) — ( 8 ) — — ( 8 ) — ( 8 )

Distributions to noncontrolling interest — — — — — — ( 5,694 ) ( 5,694 )

Balance at June 30, 2020:

237,951,968 2,380 4,613,146 2,036,225 ( 4,028,797 ) 2,622,954 131,886 2,754,840

Net (loss) income — — — ( 106,888 ) — ( 106,888 ) 1,100 ( 105,788 )

Distributions — — — — ( 2,380 ) ( 2,380 ) — ( 2,380 )

Share grants 360,000 3 503 — — 506 — 506

Share repurchases ( 42,180 ) — ( 142 ) — — ( 142 ) — ( 142 )

Share forfeitures ( 1,310 ) — ( 6 ) — — ( 6 ) — ( 6 )

Distributions to noncontrolling interest — — — — — — ( 5,324 ) ( 5,324 )

Balance at September 30, 2020:

Balance at March 31, 2021:

238,268,478 $ 2,383 $ 4,614,132 $ 1,845,604 $ ( 4,035,942 ) $ 2,426,177 $ 119,013 $ 2,545,190

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

DIVERSIFIED HEALTHCARE TRUST

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (CONTINUED)

(dollars in thousands)

Shares Common

Shares Additional

Capital Cumulative

Net Income Cumulative Other

Comprehensive

Income (Loss) Cumulative Distributions Total Equity Attributable to Common Shareholders Total Equity Attributable to Noncontrolling

Interest Total Equity

Balance at December 31, 2019:

1 unchanged sentence

Net income — — — 9,735 — 9,735 1,408 11,143

Other comprehensive income — — — — 66 — 66 — 66

Distributions — — — — ( 35,684 ) ( 35,684 ) — ( 35,684 )

Share grants — — 215 — — — 215 — 215

Distributions to noncontrolling interest — — — — — — — ( 5,503 ) ( 5,503 )

Balance at March 31, 2019:

237,729,900 2,377 4,611,634 2,170,878 ( 200 ) ( 3,823,928 ) 2,960,761 152,677 3,113,438

Net (loss) income — — — ( 37,229 ) — — ( 37,229 ) 1,413 ( 35,816 )

Other comprehensive income — — — — 71 — 71 — 71

Distributions — — — — — ( 35,659 ) ( 35,659 ) — ( 35,659 )

Share grants 15,000 — 395 — — — 395 — 395

Share repurchases ( 3,529 ) — ( 33 ) — — — ( 33 ) — ( 33 )

Share forfeitures ( 610 ) — ( 3 ) — — — ( 3 ) — ( 3 )

Distributions to noncontrolling interest — — — — — — — ( 5,684 ) ( 5,684 )

Balance at June 30, 2019:

237,740,761 2,377 4,611,993 2,133,649 ( 129 ) ( 3,859,587 ) 2,888,303 148,406 3,036,709

Net (loss) income — — — ( 29,390 ) — — ( 29,390 ) 1,444 ( 27,946 )

Other comprehensive loss — — — — ( 46 ) — ( 46 ) — ( 46 )

Distributions — — — — — ( 35,661 ) ( 35,661 ) — ( 35,661 )

Distribution to common shareholders of the right to receive Five Star Senior Living Inc.

common stock — — — — ( 59,801 ) ( 59,801 ) — ( 59,801 )

Share grants — — 249 — — 249 — 249

1 unchanged sentence

Distributions to noncontrolling interest — — — — — — ( 5,767 ) ( 5,767 )

Balance at September 30, 2019:

Balance at March 31, 2020:

237,893,725 $ 2,379 $ 4,612,739 $ 2,062,297 $ ( 4,026,418 ) $ 2,650,997 $ 136,172 $ 2,787,169

3 unchanged sentences

(dollars in thousands)

Nine Months Ended September 30,

Three Months Ended March 31,

Cash flows from operating activities:

Net loss $ ( 119,387 ) $ ( 32,258 )

Adjustments to reconcile net loss to cash provided by operating activities:

Net (loss) income $ ( 66,183 ) $ 11,143

Adjustments to reconcile net (loss) income to cash provided by operating activities:

Depreciation and amortization 66,153 68,430

Amortization of debt issuance costs and debt discounts and premiums

Net amortization of debt premiums, discounts and issuance costs 2,812 1,509

Straight line rental income ( 804 ) ( 1,153 )

Amortization of acquired real estate leases and other intangible assets ( 5,559 ) ( 4,922 )

Amortization of acquired real estate leases ( 1,866 ) ( 1,873 )

Loss on early extinguishment of debt 2,040 25

1 unchanged sentence

Impairment of assets ( 174 ) 11,234

Gain on sale of properties ( 2,403 ) ( 21,893 )

Gains and losses on equity securities, net ( 14,541 ) 41,476

Loss (gain) on sale of properties 122 ( 2,782 )

Losses on equity securities, net 8,339 9,943

Other non-cash adjustments, net ( 715 ) ( 943 )

Equity in earnings of an investee — ( 617 )

Change in assets and liabilities:

7 unchanged sentences

Proceeds from sale of properties, net 8,702 16,930

Proceeds from sale of RMR Inc.

common shares, net — 98,557

Distributions in excess of earnings from Affiliates Insurance Company 287 —

Net cash used in investing activities ( 35,303 ) ( 26,641 )

3 unchanged sentences

Repayments of borrowings on revolving credit facility — ( 83,000 )

Repayment of senior unsecured notes ( 200,000 ) ( 400,000 )

Repayment of unsecured term loan ( 250,000 ) —

Repayment of term loan ( 200,000 ) —

Repayment of other debt ( 779 ) ( 2,466 )

4 unchanged sentences

Distributions to shareholders ( 2,383 ) ( 35,684 )

Net cash used in financing activities ( 70,692 ) ( 176,058 )

Increase (decrease) in cash and cash equivalents and restricted cash 46,151 ( 6,622 )

Net cash provided by financing activities 1,079,637 3,341

Increase in cash and cash equivalents and restricted cash 1,079,156 33,012

Cash and cash equivalents and restricted cash at beginning of period 90,849 52,224

4 unchanged sentences

(dollars in thousands)

Nine Months Ended September 30,

Three Months Ended March 31,

Supplemental cash flow information:

Interest paid $ 29,071 $ 35,280

Income taxes paid $ 381 $ 452

Non-cash investing activities:

1 unchanged sentence

common stock $ — $ 97,896

Transaction Agreement additional consideration ( 75,000 ) —

Restructuring Transaction additional consideration $ — $ ( 75,000 )

Capitalized interest $ 827 $ 306

4 unchanged sentences

The following table provides a reconciliation of cash and cash equivalents and restricted cash reported within our condensed consolidated balance sheets to the amount shown in our condensed consolidated statements of cash flows:

As of September 30,

As of March 31,

Cash and cash equivalents $ 843,237 $ 69,545

2 unchanged sentences

Total cash and cash equivalents and restricted cash shown in our condensed consolidated statements of cash flows $ 1,170,005 $ 85,236

(1) Restricted cash consists of amounts escrowed for real estate taxes, insurance and capital expenditures at certain of our mortgaged properties and cash held for the operations of one of our life science properties that is owned in a joint venture arrangement in which we own a 55 % equity interest.

(1) As of March 31, 2021, restricted cash includes amounts we will use to redeem all $ 300,000 of our outstanding 6.75 % senior notes due 2021 in June 2021, when these notes become redeemable with no prepayment premium.

In April 2021, we delivered a notice of redemption with respect to these senior notes for a redemption price equal to the principal amount plus accrued and unpaid interest.

Restricted cash also consists of amounts escrowed for real estate taxes, insurance and capital expenditures at certain of our mortgaged properties and cash held for the operations of the life science property that is owned in a joint venture arrangement in which we own a 55 % equity interest.

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

14 unchanged sentences

Significant estimates in our condensed consolidated financial statements include purchase price allocations, useful lives of fixed assets and impairments of real estate and intangible assets.

We have made reclassifications to the financial statements of prior periods to conform to the current period presentation.

These reclassifications had no effect on net income (loss) or equity.

We have been, are currently, and expect in the future to be involved in claims, lawsuits, and regulatory and other governmental audits, investigations and proceedings arising in the ordinary course of our business, some of which may involve material amounts.

6 unchanged sentences

A minimum or best estimate amount may be increased or decreased when events result in a changed expectation.

We have a joint venture arrangement with an institutional investor for one of our life science properties located in Boston, Massachusetts.

We are party to a joint venture arrangement with an institutional investor.

This joint venture arrangement owns a life science property located in Boston, Massachusetts.

The investor owns a 45 % equity interest in the joint venture, and we own the remaining 55 % equity interest in the joint venture.

1 unchanged sentence

We concluded that we must consolidate this VIE because we are the entity with the power to direct the activities that most significantly impact the VIE's economic performance and we have the obligation to absorb losses of, and the right to receive benefits from, the VIE that could be significant to the VIE, and therefore are the primary beneficiary of the VIE.

The assets of this VIE were $ 981,204 and $ 1,015,661 as of September 30, 2020 and December 31, 2019, respectively, and consist primarily of the net real estate owned by the joint venture.

The liabilities of this VIE were $ 698,667 and $ 704,344 as of September 30, 2020 and December 31, 2019, respectively, and consist primarily of mortgage debts secured by the property.

The assets of this VIE were $ 958,013 and $ 970,142 as of March 31, 2021 and December 31, 2020, respectively, and consist primarily of the net real estate owned by the joint venture.

The liabilities of this VIE were $ 694,847 and $ 697,129 as of March 31, 2021 and December 31, 2020, respectively, and consist primarily of mortgage debts secured by the property.

The investor's interest in this consolidated entity is reflected as a noncontrolling interest in our condensed consolidated financial statements.

See Note 6 for further information about this joint venture.

Recent Events and Accounting Pronouncements

Recent Events.

In March 2020, the World Health Organization declared the outbreak of COVID-19 as a pandemic and, in response to the outbreak, the U.S.

Health and Human Services Secretary declared a public health emergency in the United States and many states and municipalities declared public health emergencies.

Various governmental and market responses attempting to contain and mitigate the spread of the virus have negatively impacted, and continue to negatively impact, the global economy, including the U.S.

economy, and our results of operations, financial position and cash flow.

In the United States, individuals are being encouraged to practice social distancing, are generally restricted from gathering in groups and, in

DIVERSIFIED HEALTHCARE TRUST

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

(dollar amounts in thousands, except per share data or as otherwise stated)

some areas, either have been or are subject to stay at home orders, which restrict or prohibit social gatherings, travel and non-essential activities outside of their homes.

We do not know when these restrictions will abate.

Our result of operations and cash flows from our senior living communities are dependent on our operators' ability to generate returns to us.

Senior living community operators have experienced disruptions, including limitations on in-person tours and new move-ins, and are experiencing challenges in attracting new residents to our communities.

In addition, our operators are experiencing increased expenses due to increased labor costs, including higher health benefits costs, and increased costs and consumption of supplies, including personal protective equipment, which costs reduce our returns.

As a result of the disruptions caused by the pandemic, we have taken various measures to improve our liquidity and financial flexibility.

Since March 2020, we have reduced our quarterly cash distribution rate on our common shares to $ 0.01 per common share, reduced our planned capital expenditures, issued $ 1,000,000 of senior notes, repaid all amounts outstanding under our $ 1,000,000 unsecured revolving credit facility, sold assets for aggregate sales prices of $ 120,776 and entered agreements to sell additional properties for $ 167,392 .

In addition, on June 30, 2020, we amended the agreements that govern our revolving credit facility and our $ 200,000 term loan.

Among other things, the amendments require that we maintain $ 200,000 of unrestricted cash and/or undrawn availability under our revolving credit facility and restrict our ability to incur additional debt (with the exception of borrowings under our revolving credit facility).

Recent Accounting Pronouncements.

In June 2016, the FASB issued Accounting Standards Update No.

2016-13, Financial Instruments - Credit Losses (Topic 326) :

Measurement of Credit Losses on Financial Instruments , which requires that entities use a new forward-looking “expected loss” model that generally will result in the earlier recognition of allowance for credit losses.

The measurement of expected credit losses is based upon historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount.

We adopted this standard which was effective as of January 1, 2020 using the modified retrospective approach.

The implementation of this standard did not have a material impact in our condensed consolidated financial statements.

Real Estate Properties

As of September 30, 2020, we owned 407 properties located in 37 states and Washington, D.C., including 22 properties classified as held for sale, 10 properties scheduled for closure and/or sale and one life science property owned in a joint venture arrangement in which we own a 55 % equity interest.

As of March 31, 2021, we owned 396 properties located in 36 states and Washington, D.C., including four properties classified as held for sale and one life science property owned in a joint venture arrangement in which we own a 55 % equity interest.

We regularly evaluate our assets for indicators of impairment.

Impairment indicators may include declining tenant or resident occupancy, weak or declining profitability from the property, decreasing tenant cash flows or liquidity, our decision to dispose of an asset before the end of its estimated useful life, and legislative, market or industry changes that could permanently reduce the value of an asset.

If indicators of impairment are present, we evaluate the carrying value of the affected assets by comparing it to the expected future cash flows to be generated from those assets.

The future cash flows are subjective and are based in part on assumptions regarding hold periods, market rents and terminal capitalization rates.

If the sum of these expected future cash flows is less than the carrying value, we reduce the net carrying value of the asset to its estimated fair value.

Acquisition Activities:

In January 2020, we acquired a vacant land parcel adjacent to a property we own in our portfolio of medical office and life science properties, or our Office Portfolio, segment located in Tempe, Arizona for $ 2,600 , excluding acquisition costs.

Disposition Activities:

During the nine months ended September 30, 2020, we sold 17 properties for an aggregate sales price of $ 80,601 , excluding closing costs, as presented in the table below.

The sales of these properties do not represent significant dispositions individually or in the aggregate, nor do we believe they represent a strategic shift in our business.

As a result, the results of the

If indicators of impairment are present, we evaluate the carrying value of the affected assets by

DIVERSIFIED HEALTHCARE TRUST

1 unchanged sentence

(dollar amounts in thousands, except per share data or as otherwise stated)

operation for these properties are included in continuing operations through the date of sale of such properties in our condensed consolidated statements of comprehensive income (loss).

Date of Sale Location Type of Property Number of Properties Square Feet or Number of Units Sales Price (1)

Gain (loss) on Sale Impairment of Assets

Louisiana Medical Office 6 40,575 sq.

$ 5,925 $ ( 81 ) $ —

February 2020

Pennsylvania Medical Office 1 50,000 sq.

2,900 — ( 47 )

March 2020 Texas Medical Office 1 70,229 sq.

8,779 2,863 —

April 2020 California Managed Senior Living 3 599 units 47,000 ( 168 ) 5,465

June 2020 South Carolina Medical Office 1 49,242 sq.

3,550 — 2,753

July 2020 Texas Medical Office 1 6,849 sq.

2,072 ( 30 ) —

July 2020 Connecticut Medical Office 1 32,162 sq.

625 ( 25 ) 267

August 2020 Mississippi Managed Senior Living 2 116 units 2,500 ( 42 ) 227

September 2020 Mississippi Medical Office 1 78,747 sq.

7,250 ( 114 ) 148

17 $ 80,601 $ 2,403 $ 8,813

(1) Sales price excludes closing costs.

As of September 30, 2020, we had 22 properties classified as held for sale in our condensed consolidated balance sheet as follows:

Type of Property Number of Properties Gross Book Value Impairment of Assets (1)

Managed Senior Living 14 $ 52,958 $ 33,356

Medical Office 5 69,230 1,524

Triple Net Leased, Senior Living 3 43,603 —

comparing it to the expected future cash flows to be generated from those assets.

The future cash flows are subjective and are based in part on assumptions regarding hold periods, market rents and terminal capitalization rates.

If the sum of these expected future cash flows is less than the carrying value, we reduce the net carrying value of the asset to its estimated fair value.

During the three months ended March 31, 2021, we recorded a reversal of impairment charges of $ 174 related to the estimated costs to sell 10 senior living communities that were classified as held for sale as of December 31, 2020 and changed the status of those communities from held for sale to held and used as of March 31, 2021.

Acquisitions and Dispositions:

During the three months ended March 31, 2021, we sold one property for a sale price of $ 9,000 , excluding closing costs, as presented in the table below.

The sale of this property does not represent a significant disposition, nor do we believe it represents a strategic shift in our business.

As a result, the results of the operation for this property is included in continuing operations through the date of sale of such property in our condensed consolidated statements of comprehensive income (loss).

Date of Sale Location Type of Property Number of Properties Square Feet Sale Price (1)

February 2021 Pennsylvania Medical Office 1 92,000 $ 9,000 $ ( 122 )

1 $ 9,000 $ ( 122 )

(1) We recorded an aggregate of $ 34,880 impairment of real estate during the nine months ended September 30, 2020 to adjust the carrying values of certain of these properties to their estimated fair values less costs to sell.

In October and November 2020, the three triple net leased senior living communities and one of the 14 managed senior living communities classified as held for sale in the table above were sold for an aggregate sales price of $ 49,000 , excluding closing costs.

We recorded impairment charges of $ 3,071 related to six medical office properties and one senior living community that were classified as held for sale during the three months ended March 31, 2020.

These properties were subsequently reclassified to held and used as of June 30, 2020.

We also recorded impairment charges of $ 59,847 during the three and nine months ended September 30, 2020 related to nine of the 10 senior living communities that were scheduled for closure and/or sale as of September 30, 2020.

As of November 2, 2020, we had 21 properties under agreements to sell for an aggregate sales price of approximately $ 167,392 , excluding closing costs.

We may not complete the sales of any or all of the properties we currently plan to sell.

Also, we may sell some or all of these properties at amounts that are less than currently expected and/or less than the carrying values of such properties and we may incur losses on any such sales as a result.

(1) Sale price excludes closing costs.

As of March 31, 2021, we had four properties classified as held for sale in our condensed consolidated balance sheet as follows:

Type of Property Number of Properties Gross Book Value

Life Science and Medical Office 4 $ 66,113

In April 2021, we sold these four life science and medical office properties for a sales price of $ 95,500 , excluding closing costs.

In April 2021, we entered into an agreement to acquire a property which is adjacent to one of our existing properties located in Silver Springs, Maryland for a purchase price of $ 19,600 , excluding acquisition related costs.

This acquisition is expected to close during the third quarter of 2021.

However, this acquisition is subject to conditions;

accordingly, we cannot be sure that we will complete this acquisition, that this acquisition will not be delayed or that the terms will not change.

We are a lessor of medical office and life science properties, senior living communities and other healthcare related properties.

2 unchanged sentences

Certain of our leases provide for base rent payments and in addition may include variable payments.

Rental income from operating leases, including any payments derived by index or market based indices, is recognized on a straight line basis over

Rental income from operating leases, including any payments derived by index or market based indices, is recognized on a straight line basis over the lease term when we have determined that the collectability of substantially all of the lease payments is probable.

Some of our leases have options to extend or terminate the lease exercisable at the option of our tenants, which are considered when determining the lease term.

We increased rental income to record revenue on a straight line basis by $ 804 and $ 1,153 for the three months ended March 31, 2021 and 2020, respectively.

Rents receivable, excluding receivables related to our properties classified as held for sale, include $ 105,279 and $ 104,803 of straight line rent receivables at March 31, 2021 and December 31, 2020, respectively, and are included in other assets, net in our condensed consolidated balance sheets.

DIVERSIFIED HEALTHCARE TRUST

1 unchanged sentence

(dollar amounts in thousands, except per share data or as otherwise stated)

the lease term when we have determined that the collectability of substantially all of the lease payments is probable.

Some of our leases have options to extend or terminate the lease exercisable at the option of our tenants, which are considered when determining the lease term.

We increased rental income to record revenue on a straight line basis by $ 491 and $ 1,186 for the three months ended September 30, 2020 and 2019, respectively, and $ 3,029 and $ 3,550 for the nine months ended September 30, 2020 and 2019, respectively.

Rents receivable, excluding properties classified as held for sale, include $ 102,691 and $ 99,297 of straight line rent receivables at September 30, 2020 and December 31, 2019, respectively, and are included in other assets, net in our condensed consolidated balance sheets.

We do not include in our measurement of our lease receivables certain variable payments, including changes in the index or market based indices after the inception of the lease, certain tenant reimbursements and other income until the specific events that trigger the variable payments have occurred.

We recognized such payments totaling $ 18,501 and $ 19,317 for the three months ended September 30, 2020 and 2019, respectively, of which tenant reimbursements totaled $ 1,428 and $ 1,506 , respectively, and $ 56,792 and $ 57,687 for the nine months ended September 30, 2020 and 2019, respectively, of which tenant reimbursements totaled $ 3,522 and $ 3,906 , respectively.

Certain of our tenants have requested relief from their obligations to pay rent due to us in response to the current economic conditions resulting from the COVID-19 pandemic.

As of November 2, 2020, we granted requests for certain of our tenants to defer rent payments totaling $ 2,152 .

These tenants are obligated to pay, in most cases, the deferred rents in 12 equal monthly installments beginning in 2020.

We have elected to use the FASB relief package regarding the application of lease accounting guidance to lease concessions provided as a result of the COVID-19 pandemic.

The FASB relief package provides entities with the option to account for lease concessions resulting from the COVID-19 pandemic outside of the existing lease modification guidance if the resulting cash flows from the modified lease are substantially the same as the original lease.

Because the majority of the deferred rents referenced above will generally be repaid, the cash flows from the respective leases are substantially the same as before the rent deferrals.

These deferred amounts did not negatively impact our operating results for the three and nine months ended September 30, 2020 and, as of September 30, 2020, we recognized $ 4,467 in our accounts receivable related to these deferred amounts.

Such payments totaled $ 18,228 and $ 20,028 for the three months ended March 31, 2021 and 2020, respectively, of which tenant reimbursements totaled $ 18,180 and $ 19,983 , respectively.

Certain of our tenants requested relief from their obligations to pay rent due to us in response to the current economic conditions resulting from the COVID-19 pandemic.

In most cases, these tenants granted deferrals were obligated to pay the deferred rents in 12 equal monthly installments beginning in September 2020.

As of March 31, 2021 and December 31, 2020, deferred payments totaling $ 878 and $ 1,486 , respectively, are included in other assets, net in our condensed consolidated balance sheets.

These deferred amounts did not negatively impact our operating results for the three months ended March 31, 2021 or 2020.

Right of Use Asset and Lease Liability .

For leases where we are the lessee, we recognized a right of use asset and a lease liability equal to the present value of the minimum lease payments with rental payments being applied to the lease liability and the right of use asset being amortized over the term of the lease.

The values of the right of use asset and related liability representing our future obligation under the lease arrangement for which we are the lessee were $ 4,256 and $ 4,423 , respectively, as of September 30, 2020, and $ 4,319 and $ 4,461 , respectively, as of December 31, 2019.

The values of the right of use asset and related liability representing our future obligation under the lease arrangement for which we are the lessee were $ 4,216 and $ 4,395 , respectively, as of March 31, 2021, and $ 4,237 and $ 4,410 , respectively, as of December 31, 2020.

The right of use asset and related lease liability are included within other assets, net and other liabilities , respectively, within our condensed consolidated balance sheets.

1 unchanged sentence

These leases are short term in nature, are cancelable with no fee or do not result in an annual expense in excess of our capitalization policy and, as a result, are not recorded on our condensed consolidated balance sheets.

Our principal debt obligations at September 30, 2020 were:

Our principal debt obligations at March 31, 2021 were:

(1) outstanding borrowings under our $ 800,000 revolving credit facility;

(2) $ 3,150,000 outstanding principal amount of senior unsecured notes;

(2) $ 200,000 outstanding principal amount under our term loan;

and (3) $ 684,962 aggregate principal amount of mortgage notes (excluding premiums, discounts and net debt issuance costs) secured by seven properties, of which $ 620,000 is related to a joint venture arrangement in which we own a 55 % equity interest.

These seven mortgaged properties had a gross book value of $ 946,037 at September 30, 2020.

We also had two properties subject to finance leases with lease obligations totaling $ 8,084 at September 30, 2020;

these two properties had gross book value and accumulated depreciation of $ 35,611 and $ 17,429 , respectively, at September 30, 2020, and the finance leases expire in 2026.

We have a $ 1,000,000 unsecured revolving credit facility that is available for general business purposes.

The maturity date of our revolving credit facility is January 15, 2022, and, subject to the payment of an extension fee and meeting other conditions, we have the option to extend the maturity date of the facility for an additional year.

and (3) $ 683,990 aggregate principal amount of mortgage notes (excluding premiums, discounts and net debt issuance costs) secured by seven properties, of which $ 620,000 is related to the life science property owned by a joint venture arrangement in which we own a 55 % equity interest.

These seven mortgaged properties had a gross book value of $ 947,085 at March 31, 2021.

We also had two properties subject to finance leases with lease obligations totaling $ 7,525 at March 31, 2021;

these two properties had gross book value and accumulated depreciation of $ 35,893 and $ 17,685 , respectively, at March 31, 2021, and $ 35,676 and $ 17,579 , respectively, at December 31, 2020, and the finance leases expire in 2026.

We have a $ 800,000 revolving credit facility that is available for general business purposes.

The maturity date of our revolving credit facility is January 2022, and, subject to the payment of an extension fee and meeting other conditions, we have two, one year options to extend the maturity date of the facility to January 2024.

Our revolving credit facility provides that we can borrow, repay and re-borrow funds available under our revolving credit facility until maturity, and no principal repayment is due until maturity.

As of September 30, 2020, our revolving credit facility required interest to be paid on

As of March 31, 2021, our revolving credit facility required interest to be paid on borrowings at the annual rate of 2.9 %, plus a facility fee of 30 basis points per annum on the total amount of lending commitments under the facility.

The weighted average annual interest rates for borrowings under our revolving credit facility were 2.9 % and 2.6 % for the three months ended March 31, 2021 and 2020, respectively.

The interest rate premium and facility fee are each subject to adjustment based upon changes to our credit ratings.

On March 31, 2021, we borrowed $ 800,000 under our revolving credit facility as a precautionary measure to increase our cash position and preserve financial flexibility in light of continued uncertainty resulting from the COVID-19 pandemic.

As of March 31, 2021 and May 3, 2021, we were fully drawn under our revolving credit facility.

In February 2021, we issued $ 500,000 aggregate principal amount of our 4.375 % senior notes due 2031 in an underwritten public offering raising net proceeds of $ 491,365 , after deducting estimated offering expenses and underwriters' discounts.

These notes are guaranteed by all of our subsidiaries, except for certain excluded subsidiaries, including pledged subsidiaries under the agreement governing our revolving credit facility, or our credit agreement, and require semi-annual interest payments through maturity.

We used the net proceeds from this offering to prepay in full our $ 200,000 term loan which was scheduled to mature in September 2022.

The weighted average interest rate under our $ 200,000 term loan was 2.9 % for the period from January 1, 2021 to February 7, 2021.

As a result of the prepayment of our $ 200,000 term loan, we recorded a loss on early extinguishment of debt of $ 1,477 for the three months ended March 31, 2021.

We will use the remaining net proceeds from this

DIVERSIFIED HEALTHCARE TRUST

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(dollar amounts in thousands, except per share data or as otherwise stated)

borrowings at the annual rate of 2.6 %, plus a facility fee of 30 basis points per annum on the total amount of lending commitments under the facility.

The weighted average annual interest rates for borrowings under our revolving credit facility were 2.6 % and 3.5 % for the three months ended September 30, 2020 and 2019, respectively, and 2.2 % and 3.5 % for the nine months ended September 30, 2020 and 2019, respectively.

The interest rate premium and facility fee are each subject to adjustment based upon changes to our credit ratings.

As of September 30, 2020 and November 2, 2020, we had no outstanding borrowings and $ 1,000,000 available for borrowing under our revolving credit facility.

We have a $ 200,000 unsecured term loan that matures in September 2022 and is prepayable without penalty at any time.

At September 30, 2020, the annual interest rate payable on amounts outstanding under this term loan was 2.8 %.

The weighted average annual interest rate for amounts outstanding under this term loan was 2.7 % and 3.6 % for the three months ended September 30, 2020 and 2019, respectively, and 2.7 % and 3.8 % for the nine months ended September 30, 2020 and 2019, respectively.

The interest rate premium is subject to adjustment based upon changes to our credit ratings.

In February 2020, we prepaid a mortgage note secured by one of our life science properties with an outstanding principal balance of approximately $ 1,554 , a maturity date in March 2026 and an annual interest rate of 6.25 %.

As a result of this prepayment, we recorded a loss on early extinguishment of debt of $ 246 for the nine months ended September 30, 2020.

We prepaid this mortgage using cash on hand and borrowings under our revolving credit facility.

In April 2020, we redeemed all of our outstanding 6.75 % senior notes due 2020 for a redemption price equal to the principal amount of $ 200,000 plus accrued and unpaid interest of $ 6,750 .

We funded this redemption with cash on hand and borrowings under our revolving credit facility.

In May 2020, we prepaid a mortgage note secured by one of our medical office properties with an outstanding principal balance of approximately $ 1,213 , a maturity date in January 2022 and an annual interest rate of 7.49 %.

As a result of the prepayment of this mortgage note, we recorded a loss on early extinguishment of debt of $ 155 for the nine months ended September 30, 2020.

We prepaid this mortgage using cash on hand and borrowings under our revolving credit facility.

In June 2020, we issued $ 1,000,000 aggregate principal amount of our 9.75 % senior notes due 2025 in an underwritten public offering raising net proceeds of $ 982,300 , after deducting estimated offering expenses and underwriters' discounts.

These notes are guaranteed by all of our subsidiaries, except for certain excluded subsidiaries, and require semi-annual interest payments through maturity.

Prior to June 15, 2022, we may, at our option, redeem all or a portion of these notes at a redemption price equal to the outstanding principal amount of these notes, plus accrued and unpaid interest, plus the make-whole amount set forth in the indenture which governs these notes, as supplemented, or our 2025 Notes Indenture.

Prior to June 15, 2022, we may also, at our option, redeem up to 40 % of the aggregate principal amount of these notes with the net proceeds of certain equity offerings at the redemption price set forth in the 2025 Notes Indenture, so long as at least 50 % of the original aggregate principal amount of these notes remains outstanding after each such redemption.

In addition, we have the option to redeem all or a portion of these notes at any time on or after June 15, 2022 at the redemption prices set forth in the 2025 Notes Indenture.

We used the net proceeds from this offering to prepay in full our $ 250,000 unsecured term loan which was scheduled to mature in June 2020 and to reduce amounts outstanding under our revolving credit facility.

The weighted average interest rate under our $ 250,000 senior unsecured term loan was 2.4 % for the period from January 1, 2020 to June 2, 2020.

As a result of the repayment of our $ 250,000 senior unsecured term loan, we recorded a loss on early extinguishment of debt of $ 26 for the nine months ended September 30, 2020.

In June 2020, we amended the agreements governing our $ 1,000,000 unsecured revolving credit facility and $ 200,000 unsecured term loan, or collectively, our credit and term loan agreements.

The amendments modify certain of the financial covenants under our credit and term loan agreements through June 30, 2021, or the Amendment Period, during which, subject to certain conditions, we will continue to have access to undrawn amounts under our revolving credit facility.

We have the right to terminate the Amendment Period prior to June 30, 2021, subject to certain conditions.

During the Amendment Period:

• our interest rate premium over LIBOR under our revolving credit facility and term loan increased by 50 basis points;

offering and cash on hand to redeem all $ 300,000 of our outstanding 6.75 % senior notes due 2021 in June 2021, when these notes become redeemable with no prepayment premium.

In April 2021, we delivered a notice of redemption to U.S.

Bank National Association, as trustee, with respect to these senior notes for a redemption price equal to the principal amount plus accrued and unpaid interest.

In January 2021, we amended the agreements governing our revolving credit facility and our $ 200,000 term loan, or collectively, our credit and term loan agreements, in order to provide us with certain flexibility in light of the uncertainties related to the COVID-19 pandemic.

Pursuant to the amendments:

• certain of the financial covenants under our credit and term loan agreements, including covenants that require us to maintain certain financial ratios, have been waived through June 2022, or the Amendment Period;

• the revolving credit facility commitments have been reduced from $ 1,000,000 to $ 800,000 , and as a result of the reduction in commitments, we recorded a loss on early extinguishment of debt of $ 563 for the three months ended March 31, 2021;

• we pledged certain equity interests of subsidiaries owning properties to secure our obligations under our credit and term loan agreements and agreed to provide first mortgage liens on 62 medical office and life science properties with an aggregate gross book value of real estate assets of $ 1,035,255 as of March 31, 2021 to secure our obligations, which pledges and/or mortgage liens may be removed or new ones may be added during the Amendment Period based on outstanding debt amounts, among other things;

• we have the ability to fund $ 250,000 of capital expenditures per year, which increased to $ 350,000 per year following the repayment of our term loan in February 2021, and are restricted in our ability to acquire real property as defined in our credit agreement;

• the interest rate premium over LIBOR under our revolving credit facility and term loan increased by 30 basis points;

• certain covenants and restrictions on distributions to common shareholders, share repurchases, capital expenditures, acquiring additional properties and incurring additional indebtedness (in each case subject to various exceptions), and the minimum liquidity requirement of $ 200,000 will remain in place during the Amendment Period;

• we are generally required to apply the net cash proceeds from the disposition of assets, capital markets transactions, and debt financings to the repayment of our $ 300,000 senior notes due in 2021, or maintain sufficient cash for such payment of these senior notes until they can be paid at par, our $ 200,000 term loan and any amounts outstanding under our revolving credit facility.

In February 2021, we prepaid our $ 200,000 term loan using proceeds from our February 2021 issuance of $ 500,000 aggregate principal amount of 4.375 % senior notes due 2031.

We will use the remaining net proceeds from this offering and cash on hand to redeem all of our outstanding 6.75 % senior notes due 2021 in June 2021, when these notes become redeemable with no prepayment premium.

In April 2021, we delivered a notice of redemption to U.S.

Bank National Association, as trustee, with respect to these senior notes for a redemption price equal to the principal amount plus accrued and unpaid interest.

Our credit agreement and our senior unsecured notes indentures and their supplements provide for acceleration of payment of all amounts due thereunder upon the occurrence and continuation of certain events of default, such as, in the case of our credit agreement, a change of control of us, as defined, which includes The RMR Group LLC, or RMR LLC, ceasing to act as our business and property manager.

Our credit agreement and our senior unsecured notes indentures and their supplements also contain covenants, including covenants that restrict our ability to incur debts, and generally require us to maintain certain financial ratios, and our credit agreement restricts our ability to make distributions under certain circumstances.

We believe we were in compliance with the terms and conditions of the respective covenants under our credit agreement and our senior unsecured notes indentures and their supplements at March 31, 2021.

Although we have taken steps to enhance our ability to maintain sufficient liquidity, as noted elsewhere in this Quarterly Report on Form 10-Q, a protracted negative economic impact resulting from the COVID-19 pandemic may cause increased pressure on our ability to satisfy financial and other covenants.

We may fail to satisfy covenants and conditions under our credit agreement or fail to satisfy our public debt covenants.

We expect the ratio of consolidated income available for debt service to debt service could fall below the 1.5 x requirement under our revolving credit facility and our public debt covenants in 2021 as the continued effects of the COVID-19 pandemic adversely impact our operations.

We will not be allowed to incur additional debt while this ratio is below 1.5 x.

DIVERSIFIED HEALTHCARE TRUST

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(dollar amounts in thousands, except per share data or as otherwise stated)

• we will generally be required to apply the net cash proceeds from the disposition of assets, capital markets transactions, debt financings or COVID-19 government stimulus programs, if allowed, to the repayment of outstanding loans under the revolving credit facility, if any;

• we will be subject to certain additional covenants, including additional restrictions on our ability to incur indebtedness (with exceptions for borrowings under our revolving credit facility and certain other categories of secured and unsecured indebtedness), and to acquire real property or make other investments (with exceptions for, among other things, certain categories of capital expenditures and costs);

• we will be required to maintain unrestricted liquidity (unrestricted cash and undrawn availability under our revolving credit facility) of not less than $ 200,000 ;

• our ability to pay distributions on our common shares will be limited to paying a cash dividend of $ 0.01 per common share per quarter and amounts required to maintain our qualification for taxation as a real estate investment trust, or REIT, and to avoid the payment of certain income and excise taxes.

Our credit and term loan agreements and our senior unsecured notes indentures and their supplements provide for acceleration of payment of all amounts due thereunder upon the occurrence and continuation of certain events of default, such as, in the case of our credit and term loan agreements, a change of control of us, as defined, which includes The RMR Group LLC, or RMR LLC, ceasing to act as our business and property manager.

Our credit and term loan agreements and our senior unsecured notes indentures and their supplements also contain covenants, including covenants that restrict our ability to incur debts, and generally require us to maintain certain financial ratios, and our credit and term loan agreements restrict our ability to make distributions under certain circumstances.

We believe we were in compliance with the terms and conditions of the respective covenants under our credit and term loan agreements and our senior unsecured notes indentures and their supplements at September 30, 2020.

Fair Value of Assets and Liabilities

The following table presents certain of our assets that are measured at fair value at September 30, 2020, categorized by the level of inputs as defined in the fair value hierarchy under GAAP, used in the valuation of each asset.

The following table presents certain of our assets that are measured at fair value at March 31, 2021, categorized by the level of inputs as defined in the fair value hierarchy under GAAP, used in the valuation of each asset.

Fair Value at Reporting Date Using

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$ 65,433 $ 65,433 $ — $ —

Non-Recurring Fair Value Measurements Assets:

Real estate properties held for sale (2)

$ 56,673 $ — $ 56,673 $ —

Real estate properties at fair value (3)

$ 31,010 $ — $ — $ 31,010

(1) Our 10,691,658 shares of common stock of Five Star Senior Living Inc., or Five Star, are included in other assets, net in our condensed consolidated balance sheets, and are reported at fair value, which is based upon quoted market prices on The Nasdaq Stock Market LLC, or Nasdaq, (Level 1 inputs).

On April 1, 2019, we entered into a transaction agreement with Five Star, or the Transaction Agreement, to restructure our business arrangements with Five Star, or the Restructuring Transaction.

Pursuant to the Transaction Agreement, on January 1, 2020, Five Star issued 10,268,158 Five Star common shares to us.

The fair value and initial cost basis of the Five Star common shares issued to us on January 1, 2020 was $ 38,095 .

Our adjusted cost basis inclusive of the 423,500 Five Star common shares we owned as of December 31, 2019 and the 10,268,158 Five Star common shares issued to us on January 1, 2020 was $ 44,448 as of September 30, 2020.

During the three and nine months ended September 30, 2020, we recorded unrealized gains of $ 12,510 and $ 14,541 , respectively, which is included in gains and losses on equity securities, net in

DIVERSIFIED HEALTHCARE TRUST

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

(dollar amounts in thousands, except per share data or as otherwise stated)

our condensed consolidated statements of comprehensive income (loss), to adjust the carrying value of our investment in Five Star common shares to their fair value.

Our adjusted cost basis for these shares was $ 44,448 as of March 31, 2021.

During the three months ended March 31, 2021 and 2020, we recorded unrealized losses of $ 8,339 and $ 9,943 , respectively, which are included in losses on equity securities, net in our condensed consolidated statements of comprehensive income (loss), to adjust the carrying value of our investment in Five Star common shares to their fair value.

See Note 11 for further information about our investment in Five Star.

(2) We have assets in our condensed consolidated balance sheets that are measured at fair value on a nonrecurring basis.

During the nine months ended September 30, 2020, we recorded impairment charges of $ 1,524 to reduce the carrying value of one medical office property that is classified as held for sale to its estimated sales price, less estimated costs to sell of $ 160 , based on the sales price under a purchase and sale agreement that we have entered into with a third party buyer for this medical office property of $ 3,875 .

We also recorded impairment charges of $ 33,356 to reduce the carrying value of 14 senior living communities that are classified as held for sale to their estimated sales price, less estimated costs to sell of $ 1,142 , based on the aggregate sales prices under the purchase and sale agreements that we have entered into with third party buyers for these senior living communities of $ 54,100 .

See Note 3 for further information about impairment charges and these and other properties we have classified as held for sale.

(3) We recorded impairment charges of $ 59,847 to reduce the carrying value of nine of our senior living communities scheduled for closure and/or sale to their estimated fair value of $ 31,010 based upon a combination of the market approach and the income approach and unobservable inputs such as estimated market rent, operating expense assumptions, vacancy data and capitalization rates.

We also engaged an external third party to assist us in our estimation of fair value of these communities.

The valuation techniques and significant unobservable inputs used in the valuation of these communities are considered Level 3 inputs as defined in the fair value hierarchy under GAAP.

In addition to the assets described in the table above, our financial instruments at September 30, 2020 and December 31, 2019 included cash and cash equivalents, restricted cash, other assets, our revolving credit facility, term loans, senior unsecured notes, secured debt and finance leases and other unsecured obligations and liabilities.

In addition to the assets described in the table above, our financial instruments at March 31, 2021 and December 31, 2020 included cash and cash equivalents, restricted cash, other assets, our revolving credit facility, term loan, senior unsecured notes, secured debt and finance leases and other unsecured obligations and liabilities.

The fair values of these financial instruments approximated their carrying values in our condensed consolidated financial statements as of such dates, except as follows:

As of September 30, 2020 As of December 31, 2019

As of March 31, 2021 As of December 31, 2020

Description Carrying Amount (1)

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Estimated Fair Value

Senior unsecured notes $ 2,606,550 $ 2,558,483 $ 1,820,681 $ 1,890,386

Senior unsecured notes, 6.750 % coupon rate, due in 2021 (2)

$ 299,470 $ 302,631 $ 299,273 $ 303,891

Senior unsecured notes, 4.750 % coupon rate, due in 2024

249,138 258,289 249,068 256,258

Senior unsecured notes, 9.750 % coupon rate, due in 2025

985,245 1,130,760 984,359 1,135,800

Senior unsecured notes, 4.750 % coupon rate, due in 2028

491,244 493,445 490,925 502,648

Senior unsecured notes, 4.375 % coupon rate, due in 2031

491,490 487,870 — —

Senior unsecured notes, 5.625 % coupon rate, due in 2042

341,897 323,400 341,802 330,120

Senior unsecured notes, 6.250 % coupon rate, due in 2046

242,834 243,600 242,762 245,000

Secured debts (3) (4)

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$ 3,792,051 $ 3,944,284 $ 3,299,762 $ 3,489,902

(1) Includes unamortized debt issuance costs, premiums and discounts.

(1) Includes unamortized net debt issuance costs, premiums and discounts.

(2) In April 2021, we delivered a notice of redemption to redeem all $ 300,000 of our outstanding 6.75 % senior notes due 2021 in June 2021, when these notes become redeemable with no prepayment premium.

(3) We assumed certain of these secured debts in connection with our acquisition of certain properties.

We recorded the assumed mortgage notes at estimated fair value on the date of acquisition and we are amortizing the fair value adjustments, if any, to interest expense over the respective terms of the mortgage notes to adjust interest expense to the estimated market interest rates as of the date of acquisition.

(3) Includes $ 3,015 of principal mortgage obligations and $ 25 of unamortized debt issuance costs for properties classified as held for sale as of December 31, 2019.

These debts are included in liabilities of properties held for sale in our condensed consolidated balance sheet as of December 31, 2019.

We estimated the fair value of our two issuances of senior unsecured notes due 2042 and 2046 based on the closing price on Nasdaq (Level 1 input) as of September 30, 2020.

We estimated the fair values of our four issuances of senior unsecured notes due 2021, 2024, 2025 and 2028 using an average of the bid and ask price on Nasdaq on or about September 30, 2020 (Level 2 inputs as defined in the fair value hierarchy under GAAP).

We estimated the fair values of our secured debts by using discounted cash flows analyses and currently prevailing market terms as of the measurement date (Level 3 inputs as defined in the fair value hierarchy under GAAP).

Because Level 3 inputs are unobservable, our estimated fair values may differ materially from the actual fair values.

(4) Includes secured debts for the life science property owned by a joint venture arrangement in which we own a 55 % equity interest.

The amounts listed in the table for these debts have not been adjusted to reflect the equity interests in the joint venture that we do not own.

We estimated the fair value of our two issuances of senior unsecured notes due 2042 and 2046 based on the closing price on Nasdaq (Level 1 input) as of March 31, 2021.

We estimated the fair values of our five issuances of senior unsecured notes due 2021, 2024, 2025, 2028 and 2031 using an average of the bid and ask price on Nasdaq on or about March 31, 2021 (Level 2 inputs as defined in the fair value hierarchy under GAAP).

We estimated the fair values of our secured debts by using

DIVERSIFIED HEALTHCARE TRUST

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(dollar amounts in thousands, except per share data or as otherwise stated)

Realized and unrealized gains and losses for our equity securities for the three and nine months ended September 30, 2020 and 2019 were as follows:

Three Months Ended September 30, Nine Months Ended September 30,

2020 2019 2020 2019

Realized gains and losses on equity securities sold (1)

$ — $ — $ — $ ( 41,436 )

Unrealized gains and losses on equity securities held 12,510 40 14,541 ( 40 )

Gains and losses on equity securities, net $ 12,510 $ 40 $ 14,541 $ ( 41,476 )

(1) This amount relates to our sale of our former investment in The RMR Group Inc., or RMR Inc., on July 1, 2019.

For further information about our former investment in RMR Inc.

see our Annual Report.

discounted cash flows analyses and currently prevailing market terms as of the measurement date (Level 3 inputs as defined in the fair value hierarchy under GAAP).

Because Level 3 inputs are unobservable, our estimated fair values may differ materially from the actual fair values.

Noncontrolling Interest

We have a joint venture arrangement with an institutional investor for one of our life science properties located in Boston, Massachusetts.

We are party to a joint venture arrangement with an institutional investor for one of our life science properties located in Boston, Massachusetts.

The investor owns a 45 % equity interest in the joint venture, and we own the remaining 55 % equity interest in the joint venture.

We continue to control this property and therefore continue to account for this property on a consolidated basis in our condensed consolidated financial statements under the VIE model.

The portion of the joint venture's net income and comprehensive income not attributable to us, or $ 1,100 and $ 1,444 for the three months ended September 30, 2020 and 2019, respectively, and $ 3,838 and $ 4,279 for the nine months ended September 30, 2020 and 2019, respectively, is reported as a noncontrolling interest in our condensed consolidated statements of comprehensive income (loss).

The joint venture made aggregate cash distributions to the other joint venture investor of $ 5,324 and $ 5,107 for the three months ended September 30, 2020 and 2019, respectively, and $ 16,707 and $ 16,294 for the nine months ended September 30, 2020 and 2019, respectively, which are reflected as a decrease in total equity attributable to noncontrolling interest in our condensed consolidated balance sheets.

As of September 30, 2020, this joint venture held real estate assets with an aggregate net book value of $ 710,001 , subject to mortgage notes of $ 620,000 .

The portion of the joint venture's net income and comprehensive income not attributable to us, or $ 1,322 and $ 1,408 for the three months ended March 31, 2021 and 2020, respectively, is reported as a noncontrolling interest in our condensed consolidated statements of comprehensive income (loss).

The joint venture made aggregate cash distributions to the other joint venture investor of $ 5,694 and $ 5,767 for the three months ended March 31, 2021 and 2020, respectively, which are reflected as a decrease in total equity attributable to noncontrolling interest in our condensed consolidated balance sheets.

As of March 31, 2021, this joint venture held real estate assets with an aggregate net book value of $ 700,192 , subject to mortgage notes of $ 620,000 .

In assessing whether we have a controlling interest in this joint venture arrangement and are required to consolidate the accounts of the joint venture entity, we considered the members' rights to residual gains and obligations to absorb losses, which activities most significantly impact the economic performance of the entity and which member has the power to direct those activities.

DIVERSIFIED HEALTHCARE TRUST

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

(dollar amounts in thousands, except per share data or as otherwise stated)

Shareholders' Equity

Common Share Awards:

During the nine months ended September 30, 2020, we awarded our common shares, valued at the closing price of our common shares on Nasdaq on the applicable award date, as follows:

Date Awarded Number of Shares Price per Share

May 19, 2020 (1)

60,000 $ 2.94

September 17, 2020 (2)

360,000 $ 3.77

(1) In accordance with our Trustee compensation arrangements, we awarded to each of our six Trustees 10,000 of our common shares.

(2) We awarded under our equity compensation plan an aggregate of 360,000 of our common shares to our officers and certain other employees of RMR LLC.

Common Share Purchases:

During the nine months ended September 30, 2020, we purchased our common shares from our officers and certain current and former officers and employees of RMR LLC in satisfaction of tax withholding and payment obligations in connection with the vesting of awards of our common shares, valued at the closing price of our common shares on Nasdaq on the purchase dates, as follows:

Date Purchased Number of Shares Price per Share

January 9, 2020 1,938 $ 8.10

March 13, 2020 1,500 $ 3.79

June 30, 2020 1,757 $ 4.43

September 21, 2020 42,180 $ 3.38

Distributions:

During the nine months ended September 30, 2020, we declared and paid quarterly distributions to common shareholders as follows:

During the three months ended March 31, 2021, we declared and paid a quarterly distribution to common shareholders as follows:

Record Date Payment Date Distribution Per Share Total Distributions

January 25, 2021 February 18, 2021 $ 0.01 $ 2,383

April 13, 2020 May 21, 2020 $ 0.01 $ 2,379

July 27, 2020 August 20, 2020 $ 0.01 $ 2,380

On October 15, 2020, we declared a quarterly distribution payable to our common shareholders of record on October 26, 2020 in the amount of $ 0.01 per share, or approximately $ 2,382 .

We expect to pay this distribution on or about November 19, 2020.

As described in Note 10, pursuant to the Transaction Agreement, on January 1, 2020, Five Star issued an aggregate of 16,118,849 of its common shares, with a value of $ 59,801 , to our shareholders of record as of December 13, 2019.

We recorded this issuance as a non-cash distribution in our condensed consolidated financial statements.

On April 15, 2021, we declared a quarterly distribution payable to our common shareholders of record on April 26, 2021 in the amount of $ 0.01 per share, or approximately $ 2,383 .

We expect to pay this distribution on or about May 20, 2021.

Segment Reporting

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Our Office Portfolio segment consists of medical office properties leased to medical providers and other medical related businesses, as well as life science properties leased to biotech laboratories and other similar tenants.

Our SHOP segment consists of managed senior living communities that provide short term and long term residential living and in some instances care and other services for residents where we pay fees to the operator to manage the communities for our account.

We also report “non-segment” operations, which consists of triple net leased senior living communities that are leased to operators from which we receive rents, and wellness centers, which we do not consider to be sufficiently material to constitute a separate reporting segment, and any other income or expenses that are not attributable to a specific reporting segment.

DIVERSIFIED HEALTHCARE TRUST

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(dollar amounts in thousands, except per share data or as otherwise stated)

SHOP segment consists of managed senior living communities that provide short term and long term residential living and in some instances care and other services for residents where we pay fees to the operator to manage the communities for our account.

In addition, prior to January 1, 2020, our SHOP segment included triple net leased senior living communities that provided short term and long term residential living and in some instances care and other services for residents and from which we received rents from Five Star.

Pursuant to the Restructuring Transaction, effective January 1, 2020, our previously existing master leases and management and pooling agreements with Five Star were terminated and replaced with new management and related agreements, or collectively, the New Management Agreements, for all of our senior living communities operated by Five Star.

Prior periods have been recast to reflect these reportable segments for all periods presented.

We also report “non-segment” operations, which consists of triple net leased senior living communities, which are leased to operators other than Five Star from which we receive rents, and wellness centers, which we do not consider to be sufficiently material to constitute a separate reporting segment, and any other income or expenses that are not attributable to a specific reporting segment.

For the Three Months Ended September 30, 2020

Office Portfolio SHOP (1)

Non-Segment Consolidated

For the Three Months Ended March 31, 2021

Office Portfolio SHOP Non-Segment Consolidated

Rental income $ 93,323 $ — $ 9,435 $ 102,758

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General and administrative — — 7,542 7,542

Acquisition and certain other transaction related costs

Impairment of assets — ( 174 ) — ( 174 )

1 unchanged sentence

Loss on sale of properties ( 122 ) — — ( 122 )

Gains on equity securities, net — — 12,510 12,510

Interest and other income — — 134 134

Interest expense ( 6,068 ) ( 552 ) ( 51,471 ) ( 58,091 )

Income (loss) from continuing operations before income tax expense

20,400 ( 87,133 ) ( 38,690 ) ( 105,423 )

Income tax expense — — ( 365 ) ( 365 )

Net income (loss) 20,400 ( 87,133 ) ( 39,055 ) ( 105,788 )

Net income attributable to noncontrolling interest ( 1,100 ) — — ( 1,100 )

Net income (loss) attributable to common shareholders

$ 19,300 $ ( 87,133 ) $ ( 39,055 ) $ ( 106,888 )

(1) Residents fees and services for the three months ended September 30, 2020 for our SHOP segment is net of a $ 4,005 reserve for an estimated Medicare refund we expect to pay.

Property operating expenses for the three months ended September 30, 2020 for our SHOP segment includes $ 2,167 of estimated penalties, compliance costs and professional fees, net of management fees reimbursable by Five Star, related to the Medicare refund we expect to pay.

DIVERSIFIED HEALTHCARE TRUST

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

(dollar amounts in thousands, except per share data or as otherwise stated)

For the Nine Months Ended September 30, 2020

Office Portfolio SHOP (1)

Non-Segment Consolidated

Rental income $ 288,515 $ — $ 32,428 $ 320,943

Residents fees and services — 926,174 — 926,174

Total revenues 288,515 926,174 32,428 1,247,117

Property operating expenses 97,047 837,103 — 934,150

Depreciation and amortization 97,213 98,385 8,868 204,466

General and administrative — — 23,132 23,132

Acquisition and certain other transaction related costs

Impairment of assets 8,090 98,521 — 106,611

Total expenses 202,350 1,034,009 32,803 1,269,162

Gain (loss) on sale of properties

2,613 ( 210 ) — 2,403

Gains on equity securities, net — — 14,541 14,541

Losses on equity securities, net — — ( 8,339 ) ( 8,339 )

Interest and other income — 2,433 402 2,835

Interest expense ( 5,939 ) ( 528 ) ( 53,624 ) ( 60,091 )

Gain on lease termination — — 22,896 22,896

Loss on early extinguishment of debt — — ( 2,040 ) ( 2,040 )

6 unchanged sentences

$ 22,709 $ ( 25,414 ) $ ( 64,800 ) $ ( 67,505 )

(1) Residents fees and services for the nine months ended September 30, 2020 for our SHOP segment is net of a $ 4,005 reserve for an estimated Medicare refund we expect to pay.

Property operating expenses for the nine months ended September 30, 2020 for our SHOP segment includes $ 2,167 of estimated penalties, compliance costs and professional fees, net of management fees reimbursable by Five Star, related to the Medicare refund we expect to pay.

Under the Coronavirus Aid, Relief, and Economic Security Act, or the CARES Act, the U.S.

Department of Health and Human Services, or HHS, established the Provider Relief Fund.

Department of Health and Human Services, or HHS, established a Provider Relief Fund.

Retention and use of the funds received under the CARES Act are subject to certain terms and conditions.

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Any funds not used in accordance with the terms and conditions must be returned to HHS.

As of September 30, 2020, we had received $ 15,459 in funds from the Provider Relief Fund to be used to support the operations of our managed senior living communities;

we have currently determined that $ 7,346 of such funds meet the required terms and conditions.

We have recognized $ 7,346 as other income with respect to our SHOP segment for the nine months ended September 30, 2020.

We currently expect to return the remaining $ 8,113 of such funds to HHS in November 2020 unless and to the extent we determine that such funds meet the required terms and conditions and have therefore included that amount in other liabilities in our condensed consolidated financial statements as of September 30, 2020.

We have recognized $ 2,433 as other income with respect to our SHOP segment for the three months ended March 31, 2021.

We have applied for additional funds that may be available under the CARES Act Provider Relief Fund;

however, we may not receive any additional funding.

DIVERSIFIED HEALTHCARE TRUST

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

(dollar amounts in thousands, except per share data or as otherwise stated)

As of September 30, 2020

As of March 31, 2021

Office Portfolio SHOP Non-Segment Consolidated

Total assets $ 3,072,160 $ 2,908,334 $ 1,562,212 $ 7,542,706

For the Three Months Ended September 30, 2019

Office Portfolio SHOP Non-Segment Consolidated

Rental income $ 100,010 $ 32,738 $ 15,263 $ 148,011

Residents fees and services — 107,816 — 107,816

Total revenues 100,010 140,554 15,263 255,827

Property operating expenses 34,184 90,899 — 125,083

Depreciation and amortization 33,801 34,901 4,666 73,368

General and administrative — — 9,604 9,604

Acquisition and certain other transaction related costs

— — 2,492 2,492

Impairment of assets 26,037 718 6,344 33,099

Total expenses 94,022 126,518 23,106 243,646

Gain on sale of properties 4,183 — — 4,183

Gains on equity securities, net — — 40 40

Interest and other income — — 238 238

Interest expense ( 6,239 ) ( 585 ) ( 37,993 ) ( 44,817 )

Income (loss) from continuing operations before income tax benefit and equity in earnings of an investee

3,932 13,451 ( 45,558 ) ( 28,175 )

Income tax benefit — — 146 146

Equity in earnings of an investee — — 83 83

Net income (loss) 3,932 13,451 ( 45,329 ) ( 27,946 )

Net income attributable to noncontrolling interest

( 1,444 ) — — ( 1,444 )

Net income (loss) attributable to common shareholders

$ 2,488 $ 13,451 $ ( 45,329 ) $ ( 29,390 )

DIVERSIFIED HEALTHCARE TRUST

1 unchanged sentence

(dollar amounts in thousands, except per share data or as otherwise stated)

For the Nine Months Ended September 30, 2019

For the Three Months Ended March 31, 2020

Office Portfolio SHOP Non-Segment Consolidated

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Acquisition and certain other transaction related costs

— — 11,209 11,209

Impairment of assets 6,218 5,016 — 11,234

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Gain on sale of properties 2,782 — — 2,782

Dividend income — — 1,846 1,846

Losses on equity securities, net — — ( 9,943 ) ( 9,943 )

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Interest expense ( 6,052 ) ( 564 ) ( 35,034 ) ( 41,650 )

Gain on lease termination — — 22,896 22,896

Loss on early extinguishment of debt ( 246 ) — — ( 246 )

Income (loss) from continuing operations before income tax benefit and equity in earnings of an investee

66,087 70,194 ( 169,203 ) ( 32,922 )

Income (loss) from continuing operations before income tax benefit 24,167 9,468 ( 22,935 ) 10,700

Income tax benefit — — 443 443

Equity in earnings of an investee — — 617 617

Net income (loss) 24,167 9,468 ( 22,492 ) 11,143

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Leases and Management Agreements with Five Star

As of December 31, 2019, we leased 166 senior living communities to Five Star.

As of that date, we also leased to our taxable REIT subsidiaries, or TRSs, 78 communities that we owned and that were managed by Five Star for our account.

2020 Restructuring of our Business Arrangements with Five Star.

The Transaction Agreement with Five Star .

Pursuant to the Transaction Agreement, effective January 1, 2020, or the Conversion Time:

• 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, or the Conversion, with the New Management Agreements;

Effective as of January 1, 2020:

• 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 new management agreements and a related omnibus agreement, or collectively, the Five Star management agreements;

• Five Star issued to us 10,268,158 Five Star common shares and an aggregate of 16,118,849 Five Star common shares to our shareholders of record as of December 13, 2019;

• 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 through cash payments, resulting in a gain on lease termination of $ 22,896 for the three months ended March 31, 2020 in our condensed consolidated statements of comprehensive income (loss);

DIVERSIFIED HEALTHCARE TRUST

1 unchanged sentence

(dollar amounts in thousands, except per share data or as otherwise stated)

• Five Star issued to us 10,268,158 Five Star common shares and an aggregate of 16,118,849 Five Star common shares to our shareholders of record as of December 13, 2019;

• 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 through cash payments, resulting in a gain on lease termination of $ 22,896 for the nine months ended September 30, 2020 in our condensed 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 New 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, as well as 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 New 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 New Management Agreements also provide us with the right to terminate the New 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 subsidiaries, Five Star has guaranteed the payment and performance of each of its applicable subsidiary's obligations under the applicable New Management Agreements.

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 condensed 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.

• pursuant to a guaranty agreement dated as of January 1, 2020 made by Five Star in favor of our applicable subsidiaries, Five Star has guaranteed the payment and performance of each of its applicable subsidiary's obligations under the applicable Five Star management agreements.

Effective January 1, 2020, we determined that Five Star is not a VIE and we will account for our 33.8 % 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.

We recognized rental income payable by Five Star of $ 32,738 and $ 105,451 for the three and nine months ended September 30, 2019, respectively.

Rental income for the nine months ended September 30, 2019 includes $ 538 of percentage rent payments we received from Five Star.

Rental income from Five Star represented 12.8 % and 13.4 % of our total revenues for the three and nine months ended September 30, 2019, respectively, and the properties Five Star leased from us represented 27.0 %, excluding properties held for sale, of our real estate investments, at cost, as of September 30, 2019.

Pursuant to the Transaction Agreement, commencing February 1, 2019, no percentage rent was payable to us by Five Star and annual

2021 Amendments to our Management Arrangements with Five Star.

On April 9, 2021, we announced that we have agreed to amend our management arrangements with Five Star.

The principal changes to the management arrangements will include:

• that Five Star will cooperate with us in transitioning 108 of our senior living communities with approximately 7,500 living units to other third party operators without our payment of any termination fee to Five Star, and that we will no longer have the right to sell up to an additional $ 682,000 of senior living communities currently managed by Five Star and terminate Five Star's management of those communities without our payment of a fee to Five Star upon sale;

• that Five Star will continue to manage 120 of our senior living communities with approximately 18,000 living units for our account, and that the skilled nursing units in all of our continuing care retirement communities that Five Star will continue to manage for our account, which currently includes approximately 1,500 living units, will be closed and repositioned;

• that our performance termination rights pursuant to our existing management agreements with Five Star will be amended for the senior living communities that Five Star will continue to manage for our account, such that, commencing in 2025, we can terminate up to 10 % of the senior living communities managed by Five Star for our account, based on total revenues, per year without our payment of any termination fee to Five Star for failure to meet 80 % of a target EBITDA in prior years;

• that the incentive fee calculation included in our existing management agreements with Five Star will be amended for the senior living communities that Five Star will continue to manage for our account such that there will no longer be a cap placed on any incentive fee earned by Five Star in any calendar year and that any senior living communities that are undergoing a major renovation or repositioning will be excluded from the calculation;

• that RMR LLC will assume control of any major renovation or repositioning activities at the senior living communities that Five Star will continue to manage for our account;

• that the term of our existing management agreements with Five Star will be extended by two years to December 31, 2036.

We expect that the transition of the management of the 108 senior living communities to other third party operators will be completed before year end 2021.

We also expect to incur costs related to retention, temporary labor and other transition costs for these communities, which costs may be significant.

Our Senior Living Communities Managed by Five Star .

Five Star managed 235 , including seven closed senior living communities, and 244 senior living communities for our account as of March 31, 2021 and 2020, respectively.

We lease our senior living communities that are managed by Five Star to our taxable REIT subsidiaries, or TRSs.

We incurred management fees payable to Five Star of $ 13,850 and $ 17,050 for the three months ended March 31, 2021 and 2020, respectively.

For the three months ended March 31, 2021 and 2020, $ 13,016 and $ 16,588 , respectively, of the total management fees were expensed to property operating expenses in our condensed consolidated statements of comprehensive income (loss) and $ 834 and $ 462 , respectively, were capitalized in our condensed consolidated balance sheets.

DIVERSIFIED HEALTHCARE TRUST

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(dollar amounts in thousands, except per share data or as otherwise stated)

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.

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.

For the nine months ended September 30, 2019, we funded $ 97,480 of improvements to communities leased to Five Star, including $ 49,155 of fixed assets and improvements that we purchased pursuant to the Transaction Agreement as discussed above.

Also pursuant to the Transaction Agreement, Five Star's rent did not increase as a result of these purchases.

Our Senior Living Communities Managed by Five Star .

Five Star managed 239 and 77 senior living communities for our account as of September 30, 2020 and 2019, 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 Transaction Agreement, effective January 1, 2020, we replaced our long term management and pooling agreements with Five Star with the New Management Agreements, the terms of which are described above.

We incurred management fees payable to Five Star of $ 15,182 and $ 3,832 for the three months ended September 30, 2020 and 2019, respectively, and $ 47,937 and $ 11,492 for the nine months ended September 30, 2020 and 2019, respectively.

These amounts are included in property operating expenses or have been capitalized, as appropriate, in our condensed consolidated financial statements.

The following table presents residents fees and services revenue disaggregated by type of contract and payer:

Three Months Ended September 30, Nine Months Ended September 30,

Three Months Ended March 31,

Revenue from contracts with customers:

2020 2019 2020 2019

Basic housing and support services $ 188,029 $ 231,516

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Total residents fees and services $ 259,966 $ 331,969

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 $ 5,972 and $ 1,478 for the three months ended September 30, 2020 and 2019, respectively, and $ 19,843 and $ 4,666 for the nine months ended September 30, 2020 and 2019, respectively, with respect to rehabilitation services Five Star provided at senior living communities it manages for us that are payable by us.

We incurred fees of $ 5,441 and $ 8,057 for the three months ended March 31, 2021 and 2020, respectively, with respect to rehabilitation services Five Star provided at senior living communities it manages for our account that are payable by us.

These amounts are included in property operating expenses in our condensed 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 a skilled nursing facility at one of our senior living communities that Five Star manages.

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.

As a result of this discovery, we and Five Star made an initial voluntary disclosure 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.

Five Star has since completed its review and assessment of these matters and we and Five Star will submit a final supplemental disclosure to the OIG in November 2020.

At September 30, 2020, we had accrued a revenue reserve of $ 4,005 for historical Medicare payments we received that we expect to repay as a result of the inadequate documentation Five Star identified.

In addition, we have recorded expenses for additional costs incurred or expected to be incurred, including OIG-imposed penalties,

DIVERSIFIED HEALTHCARE TRUST

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

(dollar amounts in thousands, except per share data or as otherwise stated)

as a result of this matter totaling $ 2,167 for the three and nine months ended September 30, 2020, of which the entire $ 2,167 remained accrued and not paid at September 30, 2020.

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 recognized that amount in our consolidated statement of comprehensive income (loss) during the year ended December 31, 2020 and paid that amount to the OIG in January 2021.

Five Star refunded to us approximately $ 115 of management fees it previously received relating to the Medicare payments we refunded to the OIG.

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 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.

In addition, we and Five Star have determined to close and/or sell 10 of our senior living communities that Five Star manages.

We lease to Five Star space at certain of our senior living communities that Five Star manages, which it uses to provide certain inpatient and outpatient rehabilitation and wellness services.

We recognized a reduction in property operating expenses of $ 393 and $ 1,175 for the three and nine months ended September 30, 2020, respectively, with respect to these leases.

See Note 3 to the consolidated financial statements contained in our Annual Report for further information regarding these sales.

We lease to Five Star space at certain of our senior living communities that Five Star manages.

Five Star uses this space for outpatient rehabilitation clinics.

We recognized a reduction in property operating expenses of $ 397 and $ 294 for the three months ended March 31, 2021 and 2020, respectively, with respect to these leases.

Business and Property Management Agreements with RMR LLC

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and (2) a property management agreement, which relates to the property level operations of our medical office and life science properties.

We also have a subsidiary level management agreement with RMR LLC related to one of our life science properties located in Boston, Massachusetts, which we entered in connection with the joint venture arrangement for that life science property.

RMR LLC will also provide certain construction supervision services at our senior living communities managed by Five Star.

We also have a subsidiary level management agreement with RMR LLC related to the life science property located in Boston, Massachusetts, which we entered in connection with the joint venture arrangement for that life science property.

Under that agreement, our subsidiary pays RMR LLC certain business management fees directly, which fees are credited against the business management fees payable by us to RMR LLC.

See Note 11 for further information regarding our relationship, agreements and transactions with RMR LLC.

Pursuant to our business management agreement with RMR LLC, we recognized net business management fees of $ 5,004 and $ 6,616 for the three months ended September 30, 2020 and 2019, respectively, and $ 15,614 and $ 20,917 for the nine months ended September 30, 2020 and 2019, respectively.

The net business management fees we recognized include $ 725 and $ 2,175 of management fees related to our subsidiary level management agreement with RMR LLC entered in connection with our joint venture arrangement for the three and nine months ended September 30, 2020 and 2019, respectively.

Based on our common share total return, as defined in our business management agreement, as of each of September 30, 2020 and 2019, no estimated incentive fees are included in the net business management fees we recognized for the three or nine months ended September 30, 2020 or 2019.

We recognized net business management fees payable to RMR LLC of $ 5,317 and $ 5,769 for the three months ended March 31, 2021 and 2020, respectively.

The net business management fees we recognized include $ 725 of management fees related to our subsidiary level management agreement with RMR LLC entered in connection with our joint venture arrangement for both the three months ended March 31, 2021 and 2020.

Based on our common share total return, as defined in our business management agreement, as of each of March 31, 2021 and 2020, no estimated incentive fees are included in the net business management fees we recognized for the three months ended March 31, 2021 or 2020.

The actual amount of annual incentive fees for 2021, if any, will be based on our common share total return as defined in our business management agreement, for the three-year period ending December 31, 2021, and will be payable in 2022.

We did not incur any incentive fee payable for the year ended December 31, 2019.

We recognize business management and incentive fees in general and administrative expenses in our condensed consolidated statements of comprehensive income (loss).

Pursuant to our property management agreement with RMR LLC, we recognized aggregate net property management and construction supervision fees of $ 3,477 and $ 3,289 for the three months ended September 30, 2020 and 2019, respectively, and $ 10,076 and $ 9,844 for the nine months ended September 30, 2020 and 2019, respectively.

These amounts are included in property operating expenses or have been capitalized, as appropriate, in our condensed consolidated financial statements.

We are generally responsible for all our operating expenses, including certain expenses incurred or arranged by RMR LLC on our behalf.

We are generally not responsible for payment of RMR LLC's employment, office or administrative expenses incurred to provide management services to us, except for the applicable employment and related expenses of RMR LLC's employees assigned to work exclusively or partly at our medical office and life science properties, our share of the wages, benefits and other related costs of RMR LLC's centralized accounting personnel, our share of RMR LLC's costs for providing internal audit services, or as otherwise agreed.

Our property level operating expenses are generally incorporated into the rents charged to our tenants, including certain payroll and related costs incurred by RMR LLC.

We reimbursed RMR LLC $ 3,571 and $ 3,419 for these expenses and costs for the three months ended September 30, 2020 and 2019, respectively, and $ 10,433 and $ 10,145 for the nine months ended September 30, 2020 and 2019, respectively.

These amounts are included in other operating expenses and general and administrative expenses, as applicable, in our condensed consolidated statements of comprehensive income (loss).

We did not incur any incentive fee payable for the

DIVERSIFIED HEALTHCARE TRUST

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(dollar amounts in thousands, except per share data or as otherwise stated)

year ended December 31, 2020.

We recognize business management and incentive fees in general and administrative expenses in our condensed consolidated statements of comprehensive income (loss).

We recognized aggregate net property management and construction supervision fees payable to RMR LLC of $ 3,154 and $ 3,192 for the three months ended March 31, 2021 and 2020, respectively.

Of those amounts, for the three months ended March 31, 2021 and 2020, $ 2,485 and $ 2,596 , respectively, were expensed to property operating expenses in our condensed consolidated statements of comprehensive income (loss) and $ 669 and $ 596 , respectively, were capitalized as building improvements in our condensed consolidated balance sheets.

We are generally responsible for all our operating expenses, including certain expenses incurred or arranged by RMR LLC on our behalf.

We are generally not responsible for payment of RMR LLC's employment, office or administrative expenses incurred to provide management services to us, except for the employment and related expenses of RMR LLC's employees assigned to work exclusively or partly at our medical office and life science properties, our share of the wages, benefits and other related costs of RMR LLC's centralized accounting personnel, our share of RMR LLC's costs for providing our internal audit function, or as otherwise agreed.

Our property level operating expenses are generally incorporated into the rents charged to our tenants, including certain payroll and related costs incurred by RMR LLC.

We reimbursed RMR LLC $ 3,297 and $ 3,443 for these expenses and costs for the three months ended March 31, 2021 and 2020, respectively.

These amounts are included in property operating expenses and general and administrative expenses, as applicable, in our condensed consolidated statements of comprehensive income (loss).

Related Person Transactions

We have relationships and historical and continuing transactions with RMR LLC, RMR Inc., Five Star and others related to them, including other companies to which RMR LLC or its subsidiaries provide management services and some of which have trustees, directors or officers who are also our Trustees or officers.

We have relationships and historical and continuing transactions with RMR LLC, The RMR Group Inc., or RMR Inc., Five Star and others related to them, including other companies to which RMR LLC or its subsidiaries provide management services and some of which have trustees, directors or officers who are also our Trustees or officers.

is the managing member of RMR LLC.

The Chair of our Board and one of our Managing Trustees, Adam Portnoy, is the sole trustee, an officer and the controlling shareholder of ABP Trust, which is the controlling shareholder of RMR Inc., a managing director and the president and chief executive officer of RMR Inc., an officer and employee of RMR LLC and the chair of the board of directors and a managing director of Five Star.

Jennifer Clark, our other Managing Trustee and our Secretary, also serves as a managing director and the executive vice president, general counsel and secretary of RMR Inc., an officer and employee of RMR LLC, an officer of ABP Trust and a managing director and the secretary of Five Star, and each of our officers is also an officer and employee of RMR LLC.

The Chair of our Board and one of our Managing Trustees, Adam D.

Portnoy, is the sole trustee, an officer and the controlling shareholder of ABP Trust, which is the controlling shareholder of RMR Inc., a managing director and the president and chief executive officer of RMR Inc., an officer and employee of RMR LLC and the chair of the board of directors and a managing director of Five Star.

Clark, our other Managing Trustee and our Secretary, also serves as a managing director and the executive vice president, general counsel and secretary of RMR Inc., an officer and employee of RMR LLC, an officer of ABP Trust and a managing director and the secretary of Five Star.

Francis, our President and Chief Operating Officer is an executive vice president of RMR Inc.

and she and our Chief Financial Officer and Treasurer are also employees and officers of RMR LLC.

Certain of Five Star's officers are officers and employees of RMR LLC.

Some of our Independent Trustees also serve as independent trustees or independent directors of other public companies to which RMR LLC or its subsidiaries provide management services.

1 unchanged sentence

Other officers of RMR LLC, including Ms.

Clark and certain of our other officers, serve as managing trustees, managing directors or officers of certain of these companies.

Clark and certain of our officers, serve as managing trustees, managing directors or officers of certain of these companies.

In addition, officers of RMR LLC and RMR Inc.

serve as our officers and officers of other companies to which RMR LLC or its subsidiaries provide management services.

We are currently Five Star's largest stockholder.

As of September 30, 2020, we owned 10,691,658 Five Star common shares, or approximately 33.9 % of Five Star's outstanding common shares.

Five Star manages for us most of the senior living communities we own.

As of March 31, 2021, we owned 10,691,658 Five Star common shares, or approximately 33.8 % of Five Star's outstanding common shares.

Five Star currently manages for our account most of the senior living communities we own.

RMR LLC provides management services to both us and Five Star.

Five Star participates in our property insurance program for the senior living communities Five Star owns and leases.

The premiums Five Star pays for this coverage are allocated pursuant to a formula based on the profiles of the properties included in the program.

Five Star's program cost for the policy year ending June 30, 2021 is $ 500 .

See Note 9 for further information regarding our relationships, agreements and transactions with Five Star and Note 5 for further information regarding our investment in Five Star.

As of September 30, 2020, ABP Acquisition LLC, a subsidiary of ABP Trust, the controlling shareholder of RMR Inc., together with ABP Trust, owned approximately 6.4 % of Five Star's outstanding common shares.

RMR LLC provides management services to both us and Five Star and Adam Portnoy is the chair of the board of directors and a managing director of Five Star.

Jennifer Clark is a managing director and the secretary of Five Star.

Five Star's president and chief executive officer and executive vice president, chief financial officer and treasurer are officers and employees of RMR LLC.

As of March 31, 2021, ABP Acquisition LLC, a subsidiary of ABP Trust, the controlling shareholder of RMR Inc., together with ABP Trust, owned approximately 6.3 % of Five Star's outstanding common shares.

Our Manager, RMR LLC.

We have two agreements with RMR LLC to provide management services to us.

RMR LLC also leases office space from us pursuant to a lease agreement that is terminable on 30 days' notice, subject to certain conditions.

See Note 10 for further information regarding our management agreements with RMR LLC.

See Note 8 for information relating to the annual share awards we made in September 2020 to our officers and certain other employees of RMR LLC and common shares we purchased from our officers and certain current and former officers and employees of RMR LLC in satisfaction of tax withholding and payment obligations in connection with the vesting of awards of our common shares to them.

We include amounts recognized as expense for share awards to RMR LLC employees in general and administrative expenses in our condensed consolidated statements of comprehensive income (loss).

Until its dissolution in February 2020, we, ABP Trust, Five Star and four other companies to which RMR LLC provides management services owned Affiliates Insurance Company, or AIC, an Indiana insurance company, in equal amounts.

Certain of our Trustees and certain directors or trustees of the other AIC shareholders served on the board of directors of AIC until its dissolution.

We and the other AIC shareholders historically participated in a combined property insurance program arranged and insured or reinsured in part by AIC.

The policies under that program expired on June 30, 2019, and we and the other AIC shareholders elected not to renew the AIC property insurance program;

we have instead purchased standalone property insurance coverage with unrelated third party insurance providers.

As of each of September 30, 2020 and December 31, 2019, our investment in AIC had a carrying value of $ 11 and $ 298 , respectively.

These amounts are included in other assets, net in our condensed consolidated balance sheets.

In June 2020, we received an additional liquidating distribution of approximately $ 287 from AIC in connection with its dissolution.

We did not recognize any income related to our investment in AIC for the three and nine months ended September 30, 2020 and recognized

For further information about these and other such relationships and certain other related person transactions, see our Annual Report.

DIVERSIFIED HEALTHCARE TRUST

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(dollar amounts in thousands, except per share data or as otherwise stated)

$ 83 and $ 617 related to our investment in AIC for the three and nine months ended September 30, 2019, respectively.

These amounts are presented as equity in earnings of an investee in our condensed consolidated statements of comprehensive income (loss).

Our other comprehensive income (loss) included our proportionate share of unrealized gains (losses) on securities that were owned by AIC, related to our investment in AIC.

For further information about these and other such relationships and certain other related person transactions, see our Annual Report.

We have elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended, and, as such, are generally not subject to federal and most state income taxation on our operating income provided we distribute our taxable income to our shareholders and meet certain organization and operating requirements.

We have elected to be taxed as a real estate investment trust, or REIT, under the Internal Revenue Code of 1986, as amended, and, as such, are generally not subject to federal and most state income taxation on our operating income provided we distribute our taxable income to our shareholders and meet certain organization and operating requirements.

We do, however, lease our managed senior living communities to our wholly owned TRSs that, unlike most of our subsidiaries, file a separate consolidated federal corporate income tax return and are subject to federal and state income taxes.

Our consolidated income tax provision includes the income tax provision related to the operations of our TRSs and certain state income taxes we incur despite our taxation as a REIT.

During the three months ended September 30, 2020 and 2019, we recognized income tax expense of $ 365 and benefit of $ 146 , respectively, and during the nine months ended September 30, 2020 and 2019, we recognized income tax expense of $ 1,048 and benefit of $ 47 , respectively.

During the three months ended March 31, 2021 and 2020, we recognized income tax expense of $ 238 and benefit of $ 443 , respectively.

Weighted Average Common Share s (share amounts in thousands)

2 unchanged sentences

Unvested share awards and other potentially dilutive common shares, and the related impact on earnings, are considered when calculating diluted earnings per share.

For the three months ended September 30, 2020 and 2019, 237 and 42 unvested common shares, respectively, and for the nine months ended September 30, 2020 and 2019, 235 and 26 unvested common shares, respectively, were not included in the calculation of diluted earnings per share because to do so would have been antidilutive.

For the three months ended March 31, 2021 and 2020, 20 and 123 unvested common shares, respectively, were not included in the calculation of diluted earnings per share because to do so would have been antidilutive.

Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.

What changed 10-Q

Item 1. Financial Statements