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The consolidated balance sheets include the following amounts related to our consolidated VIEs, excluding the Operating Partnership: $316.0 million and $41.2 million of land, $341.2 million and $57.9 million of building and improvements, $2.0 million and $2.0 million of building and leasehold improvements, $53.2 million and $37.8 million of right of use assets, $18.5 million and $10.3 million of accumulated depreciation, $293.8 million and $289.5 million of other assets included in other line items, $450.1 million and $94.0 million of real estate debt, net, $1.3 million and $0.7 million of accrued interest payable, $45.4 million and $29.9 million of lease liabilities, and $24.9 million and $56.6 million of other liabilities included in other line items as of September 30, 2021 and December 31, 2020, respectively.us-gaap:AccountingStandardsUpdate201613Member The Operating Partnership's consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs"). See Note 2. 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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
______________________________________________________________________
FORM 10-Q
☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended September 30, 2021
OR
☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from to
Commission File Number: 1-13199 (SL Green Realty Corp.)
Commission File Number: 33-167793-02 (SL Green Operating Partnership, L.P.)
______________________________________________________________________
SL GREEN REALTY CORP.
SL GREEN OPERATING PARTNERSHIP, L.P.
(Exact name of registrant as specified in its charter)
______________________________________________________________________

SL Green Realty Corp. | Maryland | 13-3956775
SL Green Operating Partnership, L.P. | Delaware | 13-3960938
| (State or other jurisdiction of incorporation or organization) | (I.R.S. Employer Identification No.)

One Vanderbilt Avenue, New York, NY 10017
(Address of principal executive offices—Zip Code)
(212) 594-2700
(Registrant's telephone number, including area code)
______________________________________________________________________
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.
SL Green Realty Corp. Yes x No o SL Green Operating Partnership, L.P. Yes x No o
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).
SL Green Realty Corp. Yes x No o SL Green Operating Partnership, L.P. Yes x No o
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.
SL Green Realty Corp.

Large accelerated filer | x |  | Accelerated filer | ☐
Non-accelerated filer | ☐ |  |
Smaller Reporting Company | ☐ |  | Emerging Growth Company | ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. | ☐

SL Green Operating Partnership, L.P.

Large accelerated filer | ☐ |  | Accelerated filer | ☐
Non-accelerated filer | x |  |
Smaller Reporting Company | ☐ |  | Emerging Growth Company | ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. | ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).
SL Green Realty Corp. Yes ☐ No x SL Green Operating Partnership, L.P. Yes ☐ No x
Securities registered pursuant to Section 12(b) of the Act:

Registrant |  | Trading Symbol |  | Title of Each Class |  | Name of Each Exchange on Which Registered
SL Green Realty Corp. |  | SLG |  | Common Stock, $0.01 par value |  | New York Stock Exchange
SL Green Realty Corp. |  | SLG.PRI |  | 6.500% Series I Cumulative Redeemable Preferred Stock, $0.01 par value |  | New York Stock Exchange

As of November 5, 2021, 66,726,676 shares of SL Green Realty Corp.'s common stock, par value $0.01 per share, were outstanding. As of November 5, 2021, 689,437 common units of limited partnership interest of SL Green Operating Partnership, L.P. were held by non-affiliates. There is no established trading market for such units.

EXPLANATORY NOTE
This report combines the quarterly reports on Form 10-Q for the period ended September 30, 2021 of SL Green Realty Corp. and SL Green Operating Partnership, L.P. Unless stated otherwise or the context otherwise requires, references to "SL Green Realty Corp.," the "Company" or "SL Green" mean SL Green Realty Corp. and its consolidated subsidiaries, including SL Green Operating Partnership, L.P.; and references to "SL Green Operating Partnership, L.P.," the "Operating Partnership" or "SLGOP" mean SL Green Operating Partnership, L.P. and its consolidated subsidiaries. The terms "we," "our" and "us" mean the Company and all the entities owned or controlled by the Company, including the Operating Partnership.
The Company is a Maryland corporation which operates as a self-administered and self-managed real estate investment trust, or REIT, and is the sole managing general partner of the Operating Partnership. As a general partner of the Operating Partnership, the Company has full, exclusive and complete responsibility and discretion in the day-to-day management and control of the Operating Partnership.
As of September 30, 2021, the Company owns 94.50% of the outstanding general and limited partnership interest in the Operating Partnership and owns 9,200,000 Series I Preferred Units of the Operating Partnership. As of September 30, 2021, noncontrolling investors held, in aggregate, a 5.50% limited partnership interest in the Operating Partnership. We refer to these interests as the noncontrolling interests in the Operating Partnership.
The Company and the Operating Partnership are managed and operated as one entity. The financial results of the Operating Partnership are consolidated into the financial statements of the Company. The Company has no significant assets other than its investment in the Operating Partnership. Substantially all of our assets are held by, and our operations are conducted through, the Operating Partnership. Therefore, the assets and liabilities of the Company and the Operating Partnership are substantially the same.
Noncontrolling interests in the Operating Partnership, stockholders' equity of the Company and partners' capital of the Operating Partnership are the main areas of difference between the consolidated financial statements of the Company and those of the Operating Partnership. The common limited partnership interests in the Operating Partnership not owned by the Company are accounted as noncontrolling interests, within mezzanine equity, in the Company's and the Operating Partnership's consolidated financial statements.
We believe combining the quarterly reports on Form 10-Q of the Company and the Operating Partnership into this single report results in the following benefits:
•Combined reports enhance investors' understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;
•Combined reports eliminate duplicative disclosure and provides a more streamlined and readable presentation since a substantial portion of the Company's disclosure applies to both the Company and the Operating Partnership; and
•Combined reports create time and cost efficiencies through the preparation of one combined report instead of two separate reports.
To help investors understand the significant differences between the Company and the Operating Partnership, this report presents the following separate sections for each of the Company and the Operating Partnership:
•consolidated financial statements; and
•the following notes to the consolidated financial statements:
◦Note 11, Noncontrolling Interests on the Company’s Consolidated Financial Statements;
◦Note 12, Stockholders' Equity of the Company; and
◦Note 13, Partners' Capital of the Operating Partnership.
This report also includes separate Part I, Item 4. Controls and Procedures sections and separate Exhibit 31 and 32 certifications for each of the Company and the Operating Partnership, respectively, in order to establish that the Chief Executive Officer and the Chief Financial Officer of the Company, in both their capacity as the principal executive officer and principal financial officer of the Company and the principal executive officer and principal financial officer of the general partner of the Operating Partnership, have made the requisite certifications and that the Company and the Operating Partnership are compliant with Rule 13a-15 and Rule 15d-15 of the Securities Exchange Act of 1934, as amended, or the Exchange Act.

On December 4, 2020, our Board of Directors declared an ordinary dividend and a special dividend (together, "the Total Dividend"). The Total Dividend was paid on January 15, 2021 to shareholders of record at the close of business on December 15, 2020 ("the Record Date"). Shareholders had the opportunity to elect to receive the Total Dividend in the form of all cash or all stock, subject to proration if either option was oversubscribed. As a result of the elections made, the cash option was oversubscribed and was prorated. Shareholders who elected to receive cash received, for each share of common stock they owned as of the Record Date, approximately $0.3735 in cash and 0.0279 shares of common stock. Shareholders who elected to receive shares received, for each share of common stock they owned as of the Record Date, approximately 0.0343 shares of common stock. The number of shares issued was calculated based on the volume weighted average trading price of SLG's common stock between January 5-7, 2021, of $58.15 per share.
To mitigate the dilutive impact of the common stock issued in the special dividend, the Board of Directors also authorized a reverse stock split, which was effective after markets closed on January 20, 2021. On January 8, 2021, a committee of the Board of Directors calculated the ratio for the reverse stock split of our issued and outstanding shares of common stock as 1.02918-for-1. After the issuance of the dividend and the completion of the reverse stock split, the number of shares of our common stock outstanding was equivalent to the number of total shares outstanding on the Record Date (not including any issuances or repurchases that occurred following the Record Date, as well as any fractional shares that would have been issued but for which cash-in-lieu was paid). However, on a relative basis, some individual shareholders may have more shares of SLG’s common stock, and some individual shareholders may have fewer shares of our common stock, depending on their individual elections to receive cash or stock and as a result of the cash option being oversubscribed.
All share-related references and measurements including the number of shares outstanding, share prices, number of shares repurchased, earnings per share, dividends per share, and share-based compensation awards, have been retroactively adjusted to reflect the reverse stock split for all periods presented in this Quarterly Report on Form 10-Q.

SL GREEN REALTY CORP. AND SL GREEN OPERATING PARTNERSHIP, L.P.
TABLE OF CONTENTS

PART I. FINANCIAL INFORMATION |
Item 1. | FINANCIAL STATEMENTS | 7
| FINANCIAL STATEMENTS OF SL GREEN REALTY CORP. |
| Consolidated Balance Sheets as of September 30, 2021 (unaudited) and December 31, 2020 | 7
| Consolidated Statements of Operations for the three and nine months ended September 30, 2021 and 2020 (unaudited) | 9
| Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2021 and 2020 (unaudited) | 10
| Consolidated Statements of Equity for the three and nine months ended September 30, 2021 and 2020 (unaudited) | 11
| Consolidated Statements of Cash Flows for the nine months ended September 30, 2021 and 2020 (unaudited) | 13
| FINANCIAL STATEMENTS OF SL GREEN OPERATING PARTNERSHIP, L.P. |
| Consolidated Balance Sheets as of September 30, 2021 (unaudited) and December 31, 2020 | 16
| Consolidated Statements of Operations for the three and nine months ended September 30, 2021 and 2020 (unaudited) | 18
| Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2021 and 2020 (unaudited) | 19
| Consolidated Statements of Capital for the three and nine months ended September 30, 2021 and 2020 (unaudited) | 20
| Consolidated Statements of Cash Flows for the nine months ended September 30, 2021 and 2020 (unaudited) | 22
| Notes to Consolidated Financial Statements (unaudited) | 24
Item 2. | Management's Discussion and Analysis of Financial Condition and Results of Operations | 66
Item 3. | Quantitative and Qualitative Disclosures about Market Risk | 82
Item 4. | Controls and Procedures (SL Green Realty Corp. and SL Green Operating Partnership, L.P.) | 83
PART II. | OTHER INFORMATION |
Item 1. | Legal Proceedings | 84
Item 1A. | Risk Factors | 84
Item 2. | Unregistered Sales of Equity Securities and Use of Proceeds | 85
Item 3. | Defaults Upon Senior Securities | 86
Item 4. | Mine Safety Disclosures | 87
Item 5. | Other Information | 88
Item 6. | Exhibits | 89
| Signatures | 90

Table of Contents
SL GREEN REALTY CORP. AND SL GREEN OPERATING PARTNERSHIP, L.P.
PART I FINANCIAL INFORMATION
ITEM 1. FINANCIAL STATEMENTS
5

Table of Contents
SL Green Realty Corp.
Consolidated Balance Sheets
(in thousands)

| September 30, 2021 |  | December 31, 2020
| (unaudited) |  |
Assets |  |  |
Commercial real estate properties, at cost: |  |  |
Land and land interests | $ | 1,489,101 |  |  | $ | 1,315,832 |
Building and improvements | 3,828,052 |  |  | 4,168,193 |
Building leasehold and improvements | 1,649,796 |  |  | 1,448,134 |
Right of use asset - financing leases | 27,445 |  |  | 55,711 |
Right of use asset - operating leases | 498,416 |  |  | 367,209 |
| 7,492,810 |  |  | 7,355,079 |
Less: accumulated depreciation | (1,904,465) |  |  | (1,956,077) |
| 5,588,345 |  |  | 5,399,002 |
Cash and cash equivalents | 257,941 |  |  | 266,059 |
Restricted cash | 87,992 |  |  | 106,736 |
Investments in marketable securities | 34,428 |  |  | 28,570 |
Tenant and other receivables | 44,964 |  |  | 44,507 |
Related party receivables | 35,674 |  |  | 34,657 |
Deferred rents receivable | 254,277 |  |  | 302,791 |
Debt and preferred equity investments, net of discounts and deferred origination fees of $6,494 and $11,232 and allowances of $6,630 and $13,213 in 2021 and 2020, respectively | 1,052,110 |  |  | 1,076,542 |
Investments in unconsolidated joint ventures | 3,028,084 |  |  | 3,823,322 |
Deferred costs, net | 124,637 |  |  | 177,168 |
Other assets | 347,407 |  |  | 448,213 |
Total assets (1) | $ | 10,855,859 |  |  | $ | 11,707,567 |
Liabilities |  |  |
Mortgages and other loans payable, net | $ | 1,422,287 |  |  | $ | 1,979,972 |
Revolving credit facility, net | 216,902 |  |  | 105,262 |
Unsecured term loans, net | 1,496,583 |  |  | 1,495,275 |
Unsecured notes, net | 899,118 |  |  | 1,248,219 |
Accrued interest payable | 20,777 |  |  | 14,825 |
Other liabilities | 157,375 |  |  | 302,798 |
Accounts payable and accrued expenses | 137,946 |  |  | 151,309 |
Deferred revenue | 120,567 |  |  | 118,572 |
Lease liability - financing leases | 125,168 |  |  | 152,521 |
Lease liability - operating leases | 437,357 |  |  | 339,458 |
Dividend and distributions payable | 23,958 |  |  | 149,294 |
Security deposits | 54,366 |  |  | 53,836 |
Junior subordinated deferrable interest debentures held by trusts that issued trust preferred securities | 100,000 |  |  | 100,000 |
Total liabilities (1) | 5,212,404 |  |  | 6,211,341 |

6

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SL Green Realty Corp.
Consolidated Balance Sheets
(in thousands)

| September 30, 2021 |  | December 31, 2020
| (unaudited) |  |
Commitments and contingencies |  |  |
Noncontrolling interests in Operating Partnership | 362,737 |  |  | 358,262 |
Preferred units | 198,503 |  |  | 202,169 |
Equity |  |  |
SL Green stockholders' equity: |  |  |
Series I Preferred Stock, $0.01 par value, $25.00 liquidation preference, 9,200 issued and outstanding at both September 30, 2021 and December 31, 2020 | 221,932 |  |  | 221,932 |
Common stock, $0.01 par value, 160,000 shares authorized and 67,926 and 69,534 issued and outstanding at September 30, 2021 and December 31, 2020, respectively (including 1,061 and 1,026 shares held in treasury at September 30, 2021 and December 31, 2020, respectively) | 680 |  |  | 716 |
Additional paid-in-capital | 3,774,119 |  |  | 3,862,949 |
Treasury stock at cost | (126,160) |  |  | (124,049) |
Accumulated other comprehensive loss | (60,597) |  |  | (67,247) |
Retained earnings | 1,258,232 |  |  | 1,015,462 |
Total SL Green stockholders' equity | 5,068,206 |  |  | 4,909,763 |
Noncontrolling interests in other partnerships | 14,009 |  |  | 26,032 |
Total equity | 5,082,215 |  |  | 4,935,795 |
Total liabilities and equity | $ | 10,855,859 |  |  | $ | 11,707,567 |
(1) The Company's consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs"). See Note 2. The consolidated balance sheets include the following amounts related to our consolidated VIEs, excluding the Operating Partnership: $316.0 million and $41.2 million of land, $341.2 million and $57.9 million of building and improvements, $2.0 million and $2.0 million of building and leasehold improvements, $53.2 million and $37.8 million of right of use assets, $18.5 million and $10.3 million of accumulated depreciation, $293.8 million and $289.5 million of other assets included in other line items, $450.1 million and $94.0 million of real estate debt, net, $1.3 million and $0.7 million of accrued interest payable, $45.4 million and $29.9 million of lease liabilities, and $24.9 million and $56.6 million of other liabilities included in other line items as of September 30, 2021 and December 31, 2020, respectively.

The accompanying notes are an integral part of these consolidated financial statements.
7

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SL Green Realty Corp.
Consolidated Statements of Operations
(unaudited, in thousands, except per share data)

|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2021 |  | 2020 |  | 2021 |  | 2020
Revenues |  |  |  |  |  |  |  |
Rental revenue, net |  | $ | 155,363 |  |  | $ | 195,515 |  |  | $ | 528,063 |  |  | $ | 614,032 |
Investment income |  | 20,072 |  |  | 22,988 |  |  | 59,452 |  |  | 101,464 |
Other income |  | 29,766 |  |  | 31,341 |  |  | 61,895 |  |  | 102,350 |
Total revenues |  | 205,201 |  |  | 249,844 |  |  | 649,410 |  |  | 817,846 |
Expenses |  |  |  |  |  |  |  |
Operating expenses, including related party expenses of $3,563 and $8,827 in 2021 and $2,801 and $9,289 in 2020 |  | 40,684 |  |  | 45,910 |  |  | 126,851 |  |  | 140,673 |
Real estate taxes |  | 32,139 |  |  | 43,522 |  |  | 121,318 |  |  | 131,805 |
Operating lease rent |  | 6,557 |  |  | 6,973 |  |  | 20,003 |  |  | 22,171 |
Interest expense, net of interest income |  | 14,807 |  |  | 23,536 |  |  | 57,155 |  |  | 91,100 |
Amortization of deferred financing costs |  | 2,345 |  |  | 3,151 |  |  | 9,505 |  |  | 8,312 |
Depreciation and amortization |  | 49,277 |  |  | 92,516 |  |  | 169,534 |  |  | 256,736 |
Loan loss and other investment reserves, net of recoveries |  | — |  |  | 8,957 |  |  | — |  |  | 27,018 |
Transaction related costs |  | 190 |  |  | 45 |  |  | 215 |  |  | 483 |
Marketing, general and administrative |  | 23,477 |  |  | 23,602 |  |  | 68,426 |  |  | 66,682 |
Total expenses |  | 169,476 |  |  | 248,212 |  |  | 573,007 |  |  | 744,980 |
Equity in net loss from unconsolidated joint ventures |  | (15,487) |  |  | (432) |  |  | (31,321) |  |  | (15,445) |
Equity in net loss on sale of interest in unconsolidated joint venture/real estate |  | (1,280) |  |  | — |  |  | (5,438) |  |  | — |
Purchase price and other fair value adjustments |  | 208,810 |  |  | — |  |  | 209,527 |  |  | — |
Gain on sale of real estate, net |  | 187,766 |  |  | 26,104 |  |  | 285,338 |  |  | 163,624 |
Depreciable real estate reserves and impairment |  | — |  |  | (6,627) |  |  | (5,696) |  |  | (6,627) |
Net income |  | 415,534 |  |  | 20,677 |  |  | 528,813 |  |  | 214,418 |
Net income attributable to noncontrolling interests: |  |  |  |  |  |  |  |
Noncontrolling interests in the Operating Partnership |  | (22,683) |  |  | (802) |  |  | (28,489) |  |  | (10,073) |
Noncontrolling interests in other partnerships |  | 915 |  |  | (414) |  |  | 2,454 |  |  | (1,145) |
Preferred units distributions |  | (1,823) |  |  | (1,864) |  |  | (5,492) |  |  | (6,883) |
Net income attributable to SL Green |  | 391,943 |  |  | 17,597 |  |  | 497,286 |  |  | 196,317 |
Perpetual preferred stock dividends |  | (3,738) |  |  | (3,738) |  |  | (11,213) |  |  | (11,213) |
Net income attributable to SL Green common stockholders |  | $ | 388,205 |  |  | $ | 13,859 |  |  | $ | 486,073 |  |  | $ | 185,104 |
Basic earnings per share |  | $ | 5.77 |  |  | $ | 0.19 |  |  | $ | 7.08 |  |  | $ | 2.51 |
Diluted earnings per share |  | $ | 5.75 |  |  | $ | 0.19 |  |  | $ | 7.04 |  |  | $ | 2.50 |
Basic weighted average common shares outstanding |  | 66,840 |  |  | 70,943 |  |  | 68,275 |  |  | 73,373 |
Diluted weighted average common shares and common share equivalents outstanding |  | 71,487 |  |  | 75,414 |  |  | 73,087 |  |  | 77,937 |

The accompanying notes are an integral part of these consolidated financial statements.
8

Table of Contents
SL Green Realty Corp.
Consolidated Statements of Comprehensive Income
(unaudited, in thousands)

|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2021 |  | 2020 |  | 2021 |  | 2020
Net income |  | $ | 415,534 |  |  | $ | 20,677 |  |  | $ | 528,813 |  |  | $ | 214,418 |
Other comprehensive income (loss): |  |  |  |  |  |  |  |
Increase (decrease) in unrealized value of derivative instruments, including SL Green's share of joint venture derivative instruments |  | 6,615 |  |  | 6,099 |  |  | 6,565 |  |  | (48,227) |
Increase (decrease) in unrealized value of marketable securities |  | 66 |  |  | 389 |  |  | 314 |  |  | (2,152) |
Other comprehensive income (loss) |  | 6,681 |  |  | 6,488 |  |  | 6,879 |  |  | (50,379) |
Comprehensive income |  | 422,215 |  |  | 27,165 |  |  | 535,692 |  |  | 164,039 |
Net income attributable to noncontrolling interests and preferred units distributions |  | (23,591) |  |  | (3,080) |  |  | (31,527) |  |  | (18,101) |
Other comprehensive (income) loss attributable to noncontrolling interests |  | (415) |  |  | (317) |  |  | (229) |  |  | 2,664 |
Comprehensive income attributable to SL Green |  | $ | 398,209 |  |  | $ | 23,768 |  |  | $ | 503,936 |  |  | $ | 148,602 |

The accompanying notes are an integral part of these consolidated financial statements.
9

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SL Green Realty Corp.
Consolidated Statements of Equity
(unaudited, in thousands, except per share data)

| SL Green Realty Corp. Stockholders |  |
|  |  |  | Common Stock |  |  |  |  |  |  |  |  |  |
|  | Series I Preferred Stock |  | Shares |  | Par Value |  | Additional Paid- In-Capital |  | Treasury Stock |  | Accumulated Other Comprehensive Loss |  | Retained Earnings |  | Noncontrolling Interests |  | Total
Balance at December 31, 2020 |  | $ | 221,932 |  |  | 68,508 |  |  | $ | 716 |  |  | $ | 3,862,949 |  |  | $ | (124,049) |  |  | $ | (67,247) |  |  | $ | 1,015,462 |  |  | $ | 26,032 |  |  | $ | 4,935,795 |
Net income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  | 105,343 |  |  | (1,539) |  |  | 103,804 |
Other comprehensive income |  |  |  |  |  |  |  |  |  |  |  | 384 |  |  |  |  |  |  | 384 |
Preferred dividends |  |  |  |  |  |  |  |  |  |  |  |  |  | (7,475) |  |  |  |  | (7,475) |
DRSPP proceeds |  |  |  | 7 |  |  |  |  | 467 |  |  |  |  |  |  |  |  |  |  | 467 |
Reallocation of noncontrolling interest in the Operating Partnership |  |  |  |  |  |  |  |  |  |  |  |  |  | (32,475) |  |  |  |  | (32,475) |
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings |  |  |  | 112 |  |  | 2 |  |  | 14,317 |  |  |  |  |  |  |  |  |  |  | 14,319 |
Repurchases of common stock |  |  |  | (2,781) |  |  | (28) |  |  | (177,972) |  |  |  |  |  |  | (20,887) |  |  |  |  | (198,887) |
Contributions to consolidated joint venture interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 305 |  |  | 305 |
Cash distributions to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (173) |  |  | (173) |
Issuance of special dividend paid primarily in stock |  |  |  | 2,034 |  |  |  |  | 123,529 |  |  |  |  |  |  |  |  |  |  | 123,529 |
Cash distributions declared ($1.820 per common share, none of which represented a return of capital for federal income tax purposes) |  |  |  |  |  |  |  |  |  |  |  |  |  | (125,836) |  |  |  |  | (125,836) |
Balance at June 30, 2021 |  | $ | 221,932 |  |  | 67,880 |  |  | $ | 690 |  |  | $ | 3,823,290 |  |  | $ | (124,049) |  |  | $ | (66,863) |  |  | $ | 934,132 |  |  | $ | 24,625 |  |  | $ | 4,813,757 |
Net income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  | 391,943 |  |  | (915) |  |  | 391,028 |
Other comprehensive income |  |  |  |  |  |  |  |  |  |  |  | 6,266 |  |  |  |  |  |  | 6,266 |
Preferred dividends |  |  |  |  |  |  |  |  |  |  |  |  |  | (3,738) |  |  |  |  | (3,738) |
DRSPP proceeds |  |  |  | 2 |  |  |  |  | 146 |  |  |  |  |  |  |  |  |  |  | 146 |
Reallocation of noncontrolling interest in the Operating Partnership |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,230 |  |  |  |  | 15,230 |
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings |  |  |  | (1) |  |  |  |  | 7,932 |  |  |  |  |  |  |  |  |  |  | 7,932 |
Repurchases of common stock |  |  |  | (1,016) |  |  | (10) |  |  | (57,249) |  |  |  |  |  |  | (20,698) |  |  |  |  | (77,957) |
Contributions to consolidated joint venture interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 |  |  | 5 |
Sale of interest in partially owned entity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (4,476) |  |  | (4,476) |
Cash distributions to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (5,230) |  |  | (5,230) |
Issuance of special dividend paid primarily in stock |  |  |  |  |  |  |  |  |  | (2,111) |  |  |  |  | 2,111 |  |  |  |  | — |
Cash distributions declared ($0.910 per common share, none of which represented a return of capital for federal income tax purposes) |  |  |  |  |  |  |  |  |  |  |  |  |  | (60,748) |  |  |  |  | (60,748) |
Balance at September 30, 2021 |  | $ | 221,932 |  |  | 66,865 |  |  | $ | 680 |  |  | $ | 3,774,119 |  |  | $ | (126,160) |  |  | $ | (60,597) |  |  | $ | 1,258,232 |  |  | $ | 14,009 |  |  | $ | 5,082,215 |

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SL Green Realty Corp.
Consolidated Statements of Equity
(unaudited, in thousands, except per share data)

| SL Green Realty Corp. Stockholders |  |
|  |  |  | Common Stock |  |  |  |  |  |  |  |  |  |
|  | Series I Preferred Stock |  | Shares |  | Par Value |  | Additional Paid- In-Capital |  | Treasury Stock |  | Accumulated Other Comprehensive Loss |  | Retained Earnings |  | Noncontrolling Interests |  | Total
Balance at December 31, 2019 |  | $ | 221,932 |  |  | 76,956 |  |  | $ | 803 |  |  | $ | 4,286,395 |  |  | $ | (124,049) |  |  | $ | (28,485) |  |  | $ | 1,084,719 |  |  | $ | 75,883 |  |  | $ | 5,517,198 |
Cumulative adjustment upon adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |  |  |  | (39,184) |  |  |  |  | (39,184) |
Balance at January 1, 2020 |  | $ | 221,932 |  |  | 76,956 |  |  | $ | 803 |  |  | $ | 4,286,395 |  |  | $ | (124,049) |  |  | $ | (28,485) |  |  | $ | 1,045,535 |  |  | $ | 75,883 |  |  | $ | 5,478,014 |
Net income |  |  |  |  |  |  |  |  |  |  |  |  |  | 178,720 |  |  | 730 |  |  | 179,450 |
Acquisition of subsidiary interest from noncontrolling interest |  |  |  |  |  |  |  | (3,123) |  |  |  |  |  |  |  |  | 1,587 |  |  | (1,536) |
Other comprehensive loss |  |  |  |  |  |  |  |  |  |  |  | (53,886) |  |  |  |  |  |  | (53,886) |
Preferred dividends |  |  |  |  |  |  |  |  |  |  |  |  |  | (7,475) |  |  |  |  | (7,475) |
DRSPP proceeds |  |  |  | 6 |  |  |  |  | 364 |  |  |  |  |  |  |  |  |  |  | 364 |
Conversion of units in the Operating Partnership for common stock |  |  |  | 98 |  |  | 1 |  |  | 8,743 |  |  |  |  |  |  |  |  |  |  | 8,744 |
Reallocation of noncontrolling interest in the Operating Partnership |  |  |  |  |  |  |  |  |  |  |  |  |  | 31,144 |  |  |  |  | 31,144 |
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings |  |  |  | (32) |  |  | — |  |  | 13,493 |  |  |  |  |  |  |  |  |  |  | 13,493 |
Repurchases of common stock |  |  |  | (5,442) |  |  | (56) |  |  | (283,981) |  |  |  |  |  |  | (76,831) |  |  |  |  | (360,868) |
Contributions to consolidated joint venture interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,186 |  |  | 8,186 |
Cash distributions to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (596) |  |  | (596) |
Cash distributions declared ($1.214 per common share, none of which represented a return of capital for federal income tax purposes) |  |  |  |  |  |  |  |  |  |  |  |  |  | (89,272) |  |  |  |  | (89,272) |
Balance at June 30, 2020 |  | $ | 221,932 |  |  | 71,586 |  |  | $ | 748 |  |  | $ | 4,021,891 |  |  | $ | (124,049) |  |  | $ | (82,371) |  |  | $ | 1,081,821 |  |  | $ | 85,790 |  |  | $ | 5,205,762 |
Net income |  |  |  |  |  |  |  |  |  |  |  |  |  | 17,597 |  |  | 414 |  |  | 18,011 |
Other comprehensive income |  |  |  |  |  |  |  |  |  |  |  | 6,171 |  |  |  |  |  |  | 6,171 |
Preferred dividends |  |  |  |  |  |  |  |  |  |  |  |  |  | (3,738) |  |  |  |  | (3,738) |
DRSPP proceeds |  |  |  | 4 |  |  |  |  | 202 |  |  |  |  |  |  |  |  |  |  | 202 |
Conversion of units in the Operating Partnership for common stock |  |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  | — |
Reallocation of noncontrolling interest in the Operating Partnership |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,109 |  |  |  |  | 4,109 |
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings |  |  |  | 3 |  |  | — |  |  | 7,543 |  |  |  |  |  |  |  |  |  |  | 7,543 |
Repurchases of common stock |  |  |  | (624) |  |  | (7) |  |  | (31,120) |  |  |  |  |  |  | — |  |  |  |  | (31,127) |
Contributions to consolidated joint venture interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,219 |  |  | 4,219 |
Cash distributions to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (12,530) |  |  | (12,530) |
Cash distributions declared ($0.911 per common share, none of which represented a return of capital for federal income tax purposes) |  |  |  |  |  |  |  |  |  |  |  |  |  | (64,617) |  |  |  |  | (64,617) |
Balance at September 30, 2020 |  | $ | 221,932 |  |  | 70,969 |  |  | $ | 741 |  |  | $ | 3,998,516 |  |  | $ | (124,049) |  |  | $ | (76,200) |  |  | $ | 1,035,172 |  |  | $ | 77,893 |  |  | $ | 5,134,005 |

The accompanying notes are an integral part of these consolidated financial statements.
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SL Green Realty Corp.
Consolidated Statements of Cash Flows
(unaudited, in thousands, except per share data)

| Nine Months Ended September 30, |  |
| 2021 |  | 2020 |  |
Operating Activities |  |  |  |  |
Net income | $ | 528,813 |  |  | $ | 214,418 |  |  |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |
Depreciation and amortization | 179,039 |  |  | 265,048 |  |  |
Equity in net loss from unconsolidated joint ventures | 31,321 |  |  | 15,445 |  |  |
Distributions of cumulative earnings from unconsolidated joint ventures | 719 |  |  | 576 |  |  |
Equity in net loss on sale of interest in unconsolidated joint venture interest/real estate | 5,438 |  |  | — |  |  |
Purchase price and other fair value adjustments | (209,527) |  |  | — |  |  |
Depreciable real estate reserves and impairment | 5,696 |  |  | 6,627 |  |  |
Gain on sale of real estate, net | (285,338) |  |  | (163,624) |  |  |
Loan loss reserves and other investment reserves, net of recoveries | — |  |  | 27,018 |  |  |
Deferred rents receivable | (6,963) |  |  | (3,459) |  |  |
Non-cash lease expense | 11,670 |  |  | 9,735 |  |  |
Other non-cash adjustments | 27,868 |  |  | 14,874 |  |  |
Changes in operating assets and liabilities: |  |  |  |  |
Tenant and other receivables | (11,827) |  |  | (43,069) |  |  |
Related party receivables | (4,626) |  |  | 4,195 |  |  |
Deferred lease costs | (1,267) |  |  | (12,472) |  |  |
Other assets | (118) |  |  | (55,301) |  |  |
Accounts payable, accrued expenses, other liabilities and security deposits | (54,009) |  |  | 43,256 |  |  |
Deferred revenue | 7,412 |  |  | 13,206 |  |  |
Lease liability - operating leases | (33,289) |  |  | (8,530) |  |  |
Net cash provided by operating activities | 191,012 |  |  | 327,943 |  |  |
Investing Activities |  |  |  |  |
Acquisitions of real estate property | (152,791) |  |  | (86,846) |  |  |
Additions to land, buildings and improvements | (208,380) |  |  | (281,651) |  |  |
Investments in unconsolidated joint ventures | (76,471) |  |  | (39,724) |  |  |
Distributions in excess of cumulative earnings from unconsolidated joint ventures | 749,997 |  |  | 104,300 |  |  |
Net proceeds from disposition of real estate/joint venture interest | 541,268 |  |  | 333,037 |  |  |
Cash assumed from consolidation of real estate investment | 9,475 |  |  | — |  |  |
Proceeds from sale or redemption of marketable securities | 4,528 |  |  | — |  |  |
Purchases of marketable securities | (10,000) |  |  | — |  |  |
Other investments | 2,401 |  |  | (3,921) |  |  |
Origination of debt and preferred equity investments | (83,924) |  |  | (353,797) |  |  |
Repayments or redemption of debt and preferred equity investments | 110,774 |  |  | 703,625 |  |  |
Net cash provided by investing activities | 886,877 |  |  | 375,023 |  |  |

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SL Green Realty Corp.
Consolidated Statements of Cash Flows
(unaudited, in thousands, except per share data)

| Nine Months Ended September 30, |  |
| 2021 |  | 2020 |  |
Financing Activities |  |  |  |  |
Proceeds from mortgages and other loans payable | 31,219 |  |  | 1,128,775 |  |  |
Repayments of mortgages and other loans payable | (372,300) |  |  | (710,352) |  |  |
Proceeds from revolving credit facility and unsecured notes | 925,000 |  |  | 1,275,000 |  |  |
Repayments of revolving credit facility and unsecured notes | (1,165,000) |  |  | (1,575,000) |  |  |
Proceeds from stock options exercised and DRSPP issuance | 613 |  |  | 566 |  |  |
Repurchase of common stock | (280,623) |  |  | (381,992) |  |  |
Redemption of preferred stock | (3,631) |  |  | (82,750) |  |  |
Redemption of OP units | (13,930) |  |  | (18,913) |  |  |
Distributions to noncontrolling interests in other partnerships | (5,403) |  |  | (13,126) |  |  |
Contributions from noncontrolling interests in other partnerships | 310 |  |  | 12,404 |  |  |
Acquisition of subsidiary interest from noncontrolling interest | — |  |  | (1,536) |  |  |
Distributions to noncontrolling interests in the Operating Partnership | (11,882) |  |  | (8,857) |  |  |
Dividends paid on common and preferred stock | (205,131) |  |  | (224,147) |  |  |
Tax withholdings related to restricted share awards | (2,989) |  |  | (4,752) |  |  |
Deferred loan costs | (570) |  |  | (34,687) |  |  |
Principal payments of on financing lease liabilities | (434) |  |  | (580) |  |  |
Net cash used in financing activities | (1,104,751) |  |  | (639,947) |  |  |
Net (decrease) increase in cash, cash equivalents, and restricted cash | (26,862) |  |  | 63,019 |  |  |
Cash, cash equivalents, and restricted cash at beginning of year | 372,795 |  |  | 241,430 |  |  |
Cash, cash equivalents, and restricted cash at end of period | $ | 345,933 |  |  | $ | 304,449 |  |  |
Supplemental Disclosure of Non-Cash Investing and Financing Activities: |  |  |  |  |
Conversion of units in the Operating Partnership | $ | — |  |  | $ | 8,744 |  |  |
Redemption of units in the Operating Partnership for a joint venture sale | 27,586 |  |  | — |  |  |
Exchange of preferred equity investment for real estate or equity in joint venture | — |  |  | 119,467 |  |  |
Exchange of debt investment for real estate or equity in joint venture | 9,468 |  |  | 104,211 |  |  |
Assumption of mortgage loan | 60,000 |  |  | — |  |  |
Issuance of special dividend paid primarily in stock | 121,418 |  |  | — |  |  |
Tenant improvements and capital expenditures payable | 16,684 |  |  | 11,993 |  |  |
Fair value adjustment to noncontrolling interest in the Operating Partnership | 17,245 |  |  | 35,253 |  |  |
Consolidation of real estate investment | 119,444 |  |  | — |  |  |
Deconsolidation of a subsidiary | 66,837 |  |  | — |  |  |
Deconsolidation of a subsidiary mortgage | 510,000 |  |  | 5,593 |  |  |
Reversal of assets held for sale | — |  |  | 391,664 |  |  |
Extinguishment of debt in connection with property dispositions | 53,548 |  |  | — |  |  |
Mortgages assumed in connection with sale of real estate | — |  |  | 250,000 |  |  |
Seller financed purchases | — |  |  | 100,000 |  |  |
Debt and preferred equity investments | 8,372 |  |  | 4,638 |  |  |
Removal of fully depreciated commercial real estate properties | 7,030 |  |  | 7,906 |  |  |
Distributions to noncontrolling interests | 358 |  |  | — |  |  |

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SL Green Realty Corp.
Consolidated Statements of Cash Flows
(unaudited, in thousands, except per share data)

| Nine Months Ended September 30, |  |
| 2021 |  | 2020 |  |
Share repurchase payable | 3,779 |  |  | 10,003 |  |  |
Sale of interest in partially owned entity | 4,476 |  |  | — |  |  |
Recognition of sales-type leases and related lease liabilities | — |  |  | 114,974 |  |  |
Recognition of right of use assets and related lease liabilities | 115,812 |  |  | 57,500 |  |  |

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the consolidated statements of cash flows.

| Nine Months Ended September 30,
| 2021 |  | 2020
Cash and cash equivalents | $ | 257,941 |  |  | $ | 221,404 |
Restricted cash | 87,992 |  |  | 83,045 |
Total cash, cash equivalents, and restricted cash | $ | 345,933 |  |  | $ | 304,449 |

The accompanying notes are an integral part of these consolidated financial statements.
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SL Green Operating Partnership, L.P.
Consolidated Balance Sheets
(in thousands)

| September 30, 2021 |  | December 31, 2020
| (unaudited) |  |
Assets |  |  |
Commercial real estate properties, at cost: |  |  |
Land and land interests | $ | 1,489,101 |  |  | $ | 1,315,832 |
Building and improvements | 3,828,052 |  |  | 4,168,193 |
Building leasehold and improvements | 1,649,796 |  |  | 1,448,134 |
Right of use asset - financing leases | 27,445 |  |  | 55,711 |
Right of use asset - operating leases | 498,416 |  |  | 367,209 |
| 7,492,810 |  |  | 7,355,079 |
Less: accumulated depreciation | (1,904,465) |  |  | (1,956,077) |
| 5,588,345 |  |  | 5,399,002 |
Cash and cash equivalents | 257,941 |  |  | 266,059 |
Restricted cash | 87,992 |  |  | 106,736 |
Investments in marketable securities | 34,428 |  |  | 28,570 |
Tenant and other receivables | 44,964 |  |  | 44,507 |
Related party receivables | 35,674 |  |  | 34,657 |
Deferred rents receivable | 254,277 |  |  | 302,791 |
Debt and preferred equity investments, net of discounts and deferred origination fees of $6,494 and $11,232 and allowances of $6,630 and $13,213 in 2021 and 2020, respectively | 1,052,110 |  |  | 1,076,542 |
Investments in unconsolidated joint ventures | 3,028,084 |  |  | 3,823,322 |
Deferred costs, net | 124,637 |  |  | 177,168 |
Other assets | 347,407 |  |  | 448,213 |
Total assets (1) | $ | 10,855,859 |  |  | $ | 11,707,567 |
Liabilities |  |  |
Mortgages and other loans payable, net | $ | 1,422,287 |  |  | $ | 1,979,972 |
Revolving credit facility, net | 216,902 |  |  | 105,262 |
Unsecured term loans, net | 1,496,583 |  |  | 1,495,275 |
Unsecured notes, net | 899,118 |  |  | 1,248,219 |
Accrued interest payable | 20,777 |  |  | 14,825 |
Other liabilities | 157,375 |  |  | 302,798 |
Accounts payable and accrued expenses | 137,946 |  |  | 151,309 |
Deferred revenue | 120,567 |  |  | 118,572 |
Lease liability - financing leases | 125,168 |  |  | 152,521 |
Lease liability - operating leases | 437,357 |  |  | 339,458 |
Dividend and distributions payable | 23,958 |  |  | 149,294 |
Security deposits | 54,366 |  |  | 53,836 |
Junior subordinated deferrable interest debentures held by trusts that issued trust preferred securities | 100,000 |  |  | 100,000 |
Total liabilities (1) | 5,212,404 |  |  | 6,211,341 |
Commitments and contingencies |  |  |
Limited partner interests in SLGOP (3,888 and 3,939 limited partner common units outstanding at September 30, 2021 and December 31, 2020, respectively) | 362,737 |  |  | 358,262 |
Preferred units | 198,503 |  |  | 202,169 |

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SL Green Operating Partnership, L.P.
Consolidated Balance Sheets
(in thousands)

| September 30, 2021 |  | December 31, 2020
| (unaudited) |  |
Capital |  |  |
SLGOP partners' capital: |  |  |
Series I Preferred Units, $25.00 liquidation preference, 9,200 issued and outstanding at both September 30, 2021 and December 31, 2020 | 221,932 |  |  | 221,932 |
SL Green partners' capital (707 and 724 general partner common units and 66,158 and 67,784 limited partner common units outstanding at September 30, 2021 and December 31, 2020, respectively) | 4,906,871 |  |  | 4,755,078 |
Accumulated other comprehensive loss | (60,597) |  |  | (67,247) |
Total SLGOP partners' capital | 5,068,206 |  |  | 4,909,763 |
Noncontrolling interests in other partnerships | 14,009 |  |  | 26,032 |
Total capital | 5,082,215 |  |  | 4,935,795 |
Total liabilities and capital | $ | 10,855,859 |  |  | $ | 11,707,567 |
(1) The Operating Partnership's consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs"). See Note 2. The consolidated balance sheets include the following amounts related to our consolidated VIEs, excluding the Operating Partnership: $316.0 million and $41.2 million of land, $341.2 million and $57.9 million of building and improvements, $2.0 million and $2.0 million of building and leasehold improvements, $53.2 million and $37.8 million of right of use assets, $18.5 million and $10.3 million of accumulated depreciation, $293.8 million and $289.5 million of other assets included in other line items, $450.1 million and $94.0 million of real estate debt, net, $1.3 million and $0.7 million of accrued interest payable, $45.4 million and $29.9 million of lease liabilities, and $24.9 million and $56.6 million of other liabilities included in other line items as of September 30, 2021 and December 31, 2020, respectively.

The accompanying notes are an integral part of these consolidated financial statements.
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SL Green Operating Partnership, L.P.
Consolidated Statements of Operations
(unaudited, in thousands, except per unit data)

|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2021 |  | 2020 |  | 2021 |  | 2020
Revenues |  |  |  |  |  |  |  |
Rental revenue, net |  | $ | 155,363 |  |  | $ | 195,515 |  |  | $ | 528,063 |  |  | $ | 614,032 |
Investment income |  | 20,072 |  |  | 22,988 |  |  | 59,452 |  |  | 101,464 |
Other income |  | 29,766 |  |  | 31,341 |  |  | 61,895 |  |  | 102,350 |
Total revenues |  | 205,201 |  |  | 249,844 |  |  | 649,410 |  |  | 817,846 |
Expenses |  |  |  |  |  |  |  |
Operating expenses, including related party expenses of $3,563 and $8,827 in 2021 and $2,801 and $9,289 in 2020 |  | 40,684 |  |  | 45,910 |  |  | 126,851 |  |  | 140,673 |
Real estate taxes |  | 32,139 |  |  | 43,522 |  |  | 121,318 |  |  | 131,805 |
Operating lease rent |  | 6,557 |  |  | 6,973 |  |  | 20,003 |  |  | 22,171 |
Interest expense, net of interest income |  | 14,807 |  |  | 23,536 |  |  | 57,155 |  |  | 91,100 |
Amortization of deferred financing costs |  | 2,345 |  |  | 3,151 |  |  | 9,505 |  |  | 8,312 |
Depreciation and amortization |  | 49,277 |  |  | 92,516 |  |  | 169,534 |  |  | 256,736 |
Loan loss and other investment reserves, net of recoveries |  | — |  |  | 8,957 |  |  | — |  |  | 27,018 |
Transaction related costs |  | 190 |  |  | 45 |  |  | 215 |  |  | 483 |
Marketing, general and administrative |  | 23,477 |  |  | 23,602 |  |  | 68,426 |  |  | 66,682 |
Total expenses |  | 169,476 |  |  | 248,212 |  |  | 573,007 |  |  | 744,980 |
Equity in net loss from unconsolidated joint ventures |  | (15,487) |  |  | (432) |  |  | (31,321) |  |  | (15,445) |
Equity in net loss on sale of interest in unconsolidated joint venture/real estate |  | (1,280) |  |  | — |  |  | (5,438) |  |  | — |
Purchase price and other fair value adjustments |  | 208,810 |  |  | — |  |  | 209,527 |  |  | — |
Gain on sale of real estate, net |  | 187,766 |  |  | 26,104 |  |  | 285,338 |  |  | 163,624 |
Depreciable real estate reserves and impairment |  | — |  |  | (6,627) |  |  | (5,696) |  |  | (6,627) |
Net income |  | 415,534 |  |  | 20,677 |  |  | 528,813 |  |  | 214,418 |
Net income attributable to noncontrolling interests: |  |  |  |  |  |  |  |
Noncontrolling interests in other partnerships |  | 915 |  |  | (414) |  |  | 2,454 |  |  | (1,145) |
Preferred units distributions |  | (1,823) |  |  | (1,864) |  |  | (5,492) |  |  | (6,883) |
Net income attributable to SLGOP |  | 414,626 |  |  | 18,399 |  |  | 525,775 |  |  | 206,390 |
Perpetual preferred unit distributions |  | (3,738) |  |  | (3,738) |  |  | (11,213) |  |  | (11,213) |
Net income attributable to SLGOP common unitholders |  | $ | 410,888 |  |  | $ | 14,661 |  |  | $ | 514,562 |  |  | $ | 195,177 |
Basic earnings per unit |  | $ | 5.77 |  |  | $ | 0.19 |  |  | $ | 7.08 |  |  | $ | 2.51 |
Diluted earnings per unit |  | $ | 5.75 |  |  | $ | 0.19 |  |  | $ | 7.04 |  |  | $ | 2.50 |
Basic weighted average common units outstanding |  | 70,674 |  |  | 74,972 |  |  | 72,299 |  |  | 77,496 |
Diluted weighted average common units and common unit equivalents outstanding |  | 71,487 |  |  | 75,414 |  |  | 73,087 |  |  | 77,937 |

The accompanying notes are an integral part of these consolidated financial statements.
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SL Green Operating Partnership, L.P.
Consolidated Statements of Comprehensive Income
(unaudited, in thousands)

|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2021 |  | 2020 |  | 2021 |  | 2020
Net income |  | $ | 415,534 |  |  | $ | 20,677 |  |  | $ | 528,813 |  |  | $ | 214,418 |
Other comprehensive income (loss): |  |  |  |  |  |  |  |
Increase (decrease) in unrealized value of derivative instruments, including SLGOP's share of joint venture derivative instruments |  | 6,615 |  |  | 6,099 |  |  | 6,565 |  |  | (48,227) |
Increase (decrease) in unrealized value of marketable securities |  | 66 |  |  | 389 |  |  | 314 |  |  | (2,152) |
Other comprehensive income (loss) |  | 6,681 |  |  | 6,488 |  |  | 6,879 |  |  | (50,379) |
Comprehensive income |  | 422,215 |  |  | 27,165 |  |  | 535,692 |  |  | 164,039 |
Net loss (income) attributable to noncontrolling interests |  | 915 |  |  | (414) |  |  | 2,454 |  |  | (1,145) |
Other comprehensive (income) loss attributable to noncontrolling interests |  | (415) |  |  | (317) |  |  | (229) |  |  | 2,664 |
Comprehensive income attributable to SLGOP |  | $ | 422,715 |  |  | $ | 26,434 |  |  | $ | 537,917 |  |  | $ | 165,558 |

The accompanying notes are an integral part of these consolidated financial statements.
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SL Green Operating Partnership, L.P.
Consolidated Statements of Capital
(unaudited, in thousands, except per unit data)

|  | SL Green Operating Partnership Unitholders |  |  |  |
|  |  |  | Partners' Interest |  |  |  |  |  |
|  | Series I Preferred Units |  | Common Units |  | Common Unitholders |  | Accumulated Other Comprehensive Loss |  | Noncontrolling Interests |  | Total
Balance at December 31, 2020 |  | $ | 221,932 |  |  | 68,508 |  |  | $ | 4,755,078 |  |  | $ | (67,247) |  |  | $ | 26,032 |  |  | $ | 4,935,795 |
Net income (loss) |  |  |  |  |  | 105,343 |  |  |  |  | (1,539) |  |  | 103,804 |
Other comprehensive income |  |  |  |  |  |  |  | 384 |  |  |  |  | 384 |
Preferred distributions |  |  |  |  |  | (7,475) |  |  |  |  |  |  | (7,475) |
DRSPP proceeds |  |  |  | 7 |  |  | 467 |  |  |  |  |  |  | 467 |
Reallocation of noncontrolling interests in the operating partnership |  |  |  |  |  | (32,475) |  |  |  |  |  |  | (32,475) |
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings |  |  |  | 112 |  |  | 14,319 |  |  |  |  |  |  | 14,319 |
Repurchases of common units |  |  |  | (2,781) |  |  | (198,887) |  |  |  |  |  |  | (198,887) |
Contribution to consolidated joint venture interests |  |  |  |  |  |  |  |  |  | 305 |  |  | 305 |
Cash distributions to noncontrolling interests |  |  |  |  |  |  |  |  |  | (173) |  |  | (173) |
Issuance of special distribution paid primarily in units |  |  |  | 2,034 |  |  | 123,529 |  |  |  |  |  |  | 123,529 |
Cash distributions declared ($1.820 per common unit, none of which represented a return of capital for federal income tax purposes) |  |  |  |  |  | (125,836) |  |  |  |  |  |  | (125,836) |
Balance at June 30, 2021 |  | $ | 221,932 |  |  | 67,880 |  |  | $ | 4,634,063 |  |  | $ | (66,863) |  |  | $ | 24,625 |  |  | $ | 4,813,757 |
Net income (loss) |  |  |  |  |  | 391,943 |  |  |  |  | (915) |  |  | 391,028 |
Other comprehensive income |  |  |  |  |  |  |  | 6,266 |  |  |  |  | 6,266 |
Preferred distributions |  |  |  |  |  | (3,738) |  |  |  |  |  |  | (3,738) |
DRSPP proceeds |  |  |  | 2 |  |  | 146 |  |  |  |  |  |  | 146 |
Reallocation of noncontrolling interests in the operating partnership |  |  |  |  |  | 15,230 |  |  |  |  |  |  | 15,230 |
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings |  |  |  | (1) |  |  | 7,932 |  |  |  |  |  |  | 7,932 |
Repurchases of common units |  |  |  | (1,016) |  |  | (77,957) |  |  |  |  |  |  | (77,957) |
Contribution to consolidated joint venture interests |  |  |  |  |  |  |  |  |  | 5 |  |  | 5 |
Sale of interest in partially owned entity |  |  |  |  |  |  |  |  |  | (4,476) |  |  | (4,476) |
Cash distributions to noncontrolling interests |  |  |  |  |  |  |  |  |  | (5,230) |  |  | (5,230) |
Issuance of special distribution paid primarily in units |  |  |  |  |  | — |  |  |  |  |  |  | — |
Cash distributions declared ($0.910 per common unit, none of which represented a return of capital for federal income tax purposes) |  |  |  |  |  | (60,748) |  |  |  |  |  |  | (60,748) |
Balance at September 30, 2021 |  | $ | 221,932 |  |  | 66,865 |  |  | $ | 4,906,871 |  |  | $ | (60,597) |  |  | $ | 14,009 |  |  | $ | 5,082,215 |

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SL Green Operating Partnership, L.P.
Consolidated Statements of Capital
(unaudited, in thousands, except per unit data)

|  | SL Green Operating Partnership Unitholders |  |  |  |
|  |  |  | Partners' Interest |  |  |  |  |  |
|  | Series I Preferred Units |  | Common Units |  | Common Unitholders |  | Accumulated Other Comprehensive Loss |  | Noncontrolling Interests |  | Total
Balance at December 31, 2019 |  | $ | 221,932 |  |  | 76,956 |  |  | $ | 5,247,868 |  |  | $ | (28,485) |  |  | $ | 75,883 |  |  | $ | 5,517,198 |
Cumulative adjustment upon adoption of ASC 326 |  |  |  |  |  | (39,184) |  |  |  |  |  |  | (39,184) |
Balance at January 1, 2020 |  | $ | 221,932 |  |  | 76,956 |  |  | $ | 5,208,684 |  |  | $ | (28,485) |  |  | $ | 75,883 |  |  | $ | 5,478,014 |
Net income (loss) |  |  |  |  |  | 178,720 |  |  |  |  | 730 |  |  | 179,450 |
Acquisition of subsidiary interest from noncontrolling interest |  |  |  |  |  | (3,123) |  |  |  |  | 1,587 |  |  | (1,536) |
Other comprehensive loss |  |  |  |  |  |  |  | (53,886) |  |  |  |  | (53,886) |
Preferred distributions |  |  |  |  |  | (7,475) |  |  |  |  |  |  | (7,475) |
DRSPP proceeds |  |  |  | 6 |  |  | 364 |  |  |  |  |  |  | 364 |
Conversion of common units |  |  |  | 98 |  |  | 8,744 |  |  |  |  |  |  | 8,744 |
Reallocation of noncontrolling interests in the operating partnership |  |  |  |  |  | 31,144 |  |  |  |  |  |  | 31,144 |
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings |  |  |  | (32) |  |  | 13,493 |  |  |  |  |  |  | 13,493 |
Repurchases of common stock |  |  |  | (5,442) |  |  | (360,868) |  |  |  |  |  |  | (360,868) |
Contribution to consolidated joint venture interests |  |  |  |  |  |  |  |  |  | 8,186 |  |  | 8,186 |
Cash distributions to noncontrolling interests |  |  |  |  |  |  |  |  |  | (596) |  |  | (596) |
Cash distributions declared ($1.214 per common unit, none of which represented a return of capital for federal income tax purposes) |  |  |  |  |  | (89,272) |  |  |  |  |  |  | (89,272) |
Balance at June 30, 2020 |  | $ | 221,932 |  |  | 71,586 |  |  | $ | 4,980,411 |  |  | $ | (82,371) |  |  | $ | 85,790 |  |  | $ | 5,205,762 |
Net income |  |  |  |  |  | 17,597 |  |  |  |  | 414 |  |  | 18,011 |
Other comprehensive income |  |  |  |  |  |  |  | 6,171 |  |  |  |  | 6,171 |
Preferred distributions |  |  |  |  |  | (3,738) |  |  |  |  |  |  | (3,738) |
DRSPP proceeds |  |  |  | 4 |  |  | 202 |  |  |  |  |  |  | 202 |
Conversion of common units |  |  |  | — |  |  | — |  |  |  |  |  |  | — |
Reallocation of noncontrolling interests in the operating partnership |  |  |  |  |  | 4,109 |  |  |  |  |  |  | 4,109 |
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings |  |  |  | 3 |  |  | 7,543 |  |  |  |  |  |  | 7,543 |
Repurchases of common stock |  |  |  | (624) |  |  | (31,127) |  |  |  |  |  |  | (31,127) |
Contribution to consolidated joint venture interests |  |  |  |  |  |  |  |  |  | 4,219 |  |  | 4,219 |
Cash distributions to noncontrolling interests |  |  |  |  |  |  |  |  |  | (12,530) |  |  | (12,530) |
Cash distributions declared ($0.911 per common unit, none of which represented a return of capital for federal income tax purposes) |  |  |  |  |  | (64,617) |  |  |  |  |  |  | (64,617) |
Balance at September 30, 2020 |  | $ | 221,932 |  |  | 70,969 |  |  | $ | 4,910,380 |  |  | $ | (76,200) |  |  | $ | 77,893 |  |  | $ | 5,134,005 |

The accompanying notes are an integral part of these consolidated financial statements.
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Table of Contents
SL Green Operating Partnership, L.P.
Consolidated Statements of Cash Flows
(unaudited, in thousands)

| Nine Months Ended September 30,
| 2021 |  | 2020
Operating Activities |  |  |
Net income | $ | 528,813 |  |  | $ | 214,418 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 179,039 |  |  | 265,048 |
Equity in net loss from unconsolidated joint ventures | 31,321 |  |  | 15,445 |
Distributions of cumulative earnings from unconsolidated joint ventures | 719 |  |  | 576 |
Equity in net loss on sale of interest in unconsolidated joint venture interest/real estate | 5,438 |  |  | — |
Purchase price and other fair value adjustments | (209,527) |  |  | — |
Depreciable real estate reserves and impairment | 5,696 |  |  | 6,627 |
Gain on sale of real estate, net | (285,338) |  |  | (163,624) |
Loan loss reserves and other investment reserves, net of recoveries | — |  |  | 27,018 |
Deferred rents receivable | (6,963) |  |  | (3,459) |
Non-cash lease expense | 11,670 |  |  | 9,735 |
Other non-cash adjustments | 27,868 |  |  | 14,874 |
Changes in operating assets and liabilities: |  |  |
Tenant and other receivables | (11,827) |  |  | (43,069) |
Related party receivables | (4,626) |  |  | 4,195 |
Deferred lease costs | (1,267) |  |  | (12,472) |
Other assets | (118) |  |  | (55,301) |
Accounts payable, accrued expenses, other liabilities and security deposits | (54,009) |  |  | 43,256 |
Deferred revenue | 7,412 |  |  | 13,206 |
Lease liability - operating leases | (33,289) |  |  | (8,530) |
Net cash provided by operating activities | 191,012 |  |  | 327,943 |
Investing Activities |  |  |
Acquisitions of real estate property | (152,791) |  |  | (86,846) |
Additions to land, buildings and improvements | (208,380) |  |  | (281,651) |
Investments in unconsolidated joint ventures | (76,471) |  |  | (39,724) |
Distributions in excess of cumulative earnings from unconsolidated joint ventures | 749,997 |  |  | 104,300 |
Net proceeds from disposition of real estate/joint venture interest | 541,268 |  |  | 333,037 |
Cash assumed from consolidation of real estate investment | 9,475 |  |  | — |
Proceeds from sale or redemption of marketable securities | 4,528 |  |  | — |
Purchases of marketable securities | (10,000) |  |  | — |
Other investments | 2,401 |  |  | (3,921) |
Origination of debt and preferred equity investments | (83,924) |  |  | (353,797) |
Repayments or redemption of debt and preferred equity investments | 110,774 |  |  | 703,625 |
Net cash provided by investing activities | 886,877 |  |  | 375,023 |
Financing Activities |  |  |
Proceeds from mortgages and other loans payable | 31,219 |  |  | 1,128,775 |
Repayments of mortgages and other loans payable | (372,300) |  |  | (710,352) |
Proceeds from revolving credit facility and unsecured notes | 925,000 |  |  | 1,275,000 |
Repayments of revolving credit facility and unsecured notes | (1,165,000) |  |  | (1,575,000) |
Proceeds from stock options exercised and DRSPP issuance | 613 |  |  | 566 |
Repurchase of common units | (280,623) |  |  | (381,992) |

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SL Green Operating Partnership, L.P.
Consolidated Statements of Cash Flows
(unaudited, in thousands)

| Nine Months Ended September 30,
| 2021 |  | 2020
Redemption of preferred units | (3,631) |  |  | (82,750) |
Redemption of OP units | (13,930) |  |  | (18,913) |
Distributions to noncontrolling interests in other partnerships | (5,403) |  |  | (13,126) |
Contributions from noncontrolling interests in other partnerships | 310 |  |  | 12,404 |
Acquisition of subsidiary interest from noncontrolling interest | — |  |  | (1,536) |
Distributions paid on common and preferred units | (217,013) |  |  | (233,004) |
Tax withholdings related to restricted share awards | (2,989) |  |  | (4,752) |
Deferred loan costs | (570) |  |  | (34,687) |
Principal payments of on financing lease liabilities | (434) |  |  | (580) |
Net cash used in financing activities | (1,104,751) |  |  | (639,947) |
Net (decrease) increase in cash, cash equivalents, and restricted cash | (26,862) |  |  | 63,019 |
Cash, cash equivalents, and restricted cash at beginning of year | 372,795 |  |  | 241,430 |
Cash, cash equivalents, and restricted cash at end of period | $ | 345,933 |  |  | $ | 304,449 |
Supplemental Disclosure of Non-Cash Investing and Financing Activities: |  |  |
Conversion of units in the Operating Partnership | $ | — |  |  | $ | 8,744 |
Redemption of units in the Operating Partnership for a joint venture sale | 27,586 |  |  | — |
Exchange of preferred equity investment for real estate or equity in joint venture | — |  |  | 119,467 |
Exchange of debt investment for real estate or equity in joint venture | 9,468 |  |  | 104,211 |
Assumption of mortgage loan | 60,000 |  |  | — |
Issuance of special distribution paid primarily in units | 121,418 |  |  | — |
Tenant improvements and capital expenditures payable | 16,684 |  |  | 11,993 |
Fair value adjustment to noncontrolling interest in the Operating Partnership | 17,245 |  |  | 35,253 |
Consolidation of real estate investment | 119,444 |  |  | — |
Deconsolidation of a subsidiary | 66,837 |  |  | — |
Deconsolidation of a subsidiary mortgage | 510,000 |  |  | 5,593 |
Reversal of assets held for sale | — |  |  | 391,664 |
Extinguishment of debt in connection with property dispositions | 53,548 |  |  | — |
Mortgages assumed in connection with sale of real estate | — |  |  | 250,000 |
Seller financed purchases | — |  |  | 100,000 |
Debt and preferred equity investments | 8,372 |  |  | 4,638 |
Removal of fully depreciated commercial real estate properties | 7,030 |  |  | 7,906 |
Distributions to noncontrolling interests | 358 |  |  | — |
Share repurchase payable | 3,779 |  |  | 10,003 |
Sale of interest in partially owned entity | 4,476 |  |  | — |
Recognition of sales-type leases and related lease liabilities | — |  |  | 114,974 |
Recognition of right of use assets and related lease liabilities | 115,812 |  |  | 57,500 |

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SL Green Operating Partnership, L.P.
Consolidated Statements of Cash Flows
(unaudited, in thousands)
The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the consolidated statements of cash flows.

| Nine Months Ended September 30,
| 2021 |  | 2020
Cash and cash equivalents | $ | 257,941 |  |  | $ | 221,404 |
Restricted cash | 87,992 |  |  | 83,045 |
Total cash, cash equivalents, and restricted cash | $ | 345,933 |  |  | $ | 304,449 |

The accompanying notes are an integral part of these consolidated financial statements.
23

SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements
September 30, 2021
(unaudited)
1. Organization and Basis of Presentation
SL Green Realty Corp., which is referred to as the Company or SL Green, a Maryland corporation, and SL Green Operating Partnership, L.P., which is referred to as SLGOP or the Operating Partnership, a Delaware limited partnership, were formed in June 1997 for the purpose of combining the commercial real estate business of S.L. Green Properties, Inc. and its affiliated partnerships and entities. The Operating Partnership received a contribution of interest in the real estate properties, as well as 95% of the economic interest in the management, leasing and construction companies which are referred to as the Service Corporation. All of the management, leasing and construction services that are provided to the properties that are wholly-owned by us and that are provided to certain joint ventures are conducted through SL Green Management LLC and SL Green Management Corp., respectively, which are 100% owned by the Operating Partnership. The Company has qualified, and expects to qualify in the current fiscal year, as a real estate investment trust, or REIT, under the Internal Revenue Code of 1986, as amended, or the Code, and operates as a self-administered, self-managed REIT. A REIT is a legal entity that holds real estate interests and, through payments of dividends to stockholders, is permitted to minimize the payment of Federal income taxes at the corporate level. Unless the context requires otherwise, all references to "we," "our" and "us" means the Company and all entities owned or controlled by the Company, including the Operating Partnership.
Substantially all of our assets are held by, and all of our operations are conducted through, the Operating Partnership. The Company is the sole managing general partner of the Operating Partnership. As of September 30, 2021, noncontrolling investors held, in the aggregate, a 5.50% limited partnership interest in the Operating Partnership. We refer to these interests as the noncontrolling interests in the Operating Partnership. The Operating Partnership is considered a variable interest entity, or VIE, in which we are the primary beneficiary. See Note 11, "Noncontrolling Interests on the Company's Consolidated Financial Statements."
On December 4, 2020, our Board of Directors declared an ordinary dividend and a special dividend (together, "the Total Dividend"). The Total Dividend was paid on January 15, 2021 to shareholders of record at the close of business on December 15, 2020 ("the Record Date"). Shareholders had the opportunity to elect to receive the Total Dividend in the form of all cash or all stock, subject to proration if either option was oversubscribed. As a result of the elections made, the cash option was oversubscribed and was prorated. Shareholders who elected to receive cash received, for each share of common stock they owned as of the Record Date, approximately $0.3735 in cash and 0.0279 shares of common stock. Shareholders who elected to receive shares received, for each share of common stock they owned as of the Record Date, approximately 0.0343 shares of common stock. The number of shares issued was calculated based on the volume weighted average trading price of SLG's common stock between January 5-7, 2021, of $58.15 per share.
To mitigate the dilutive impact of the common stock issued in the special dividend, the Board of Directors also authorized a reverse stock split, which was effective after markets closed on January 20, 2021. On January 8, 2021, a committee of the Board of Directors calculated the ratio for the reverse stock split of our issued and outstanding shares of common stock as 1.02918-for-1. After the issuance of the dividend and the completion of the reverse stock split, the number of shares of our common stock outstanding was equivalent to the number of total shares outstanding on the Record Date (not including any issuances or repurchases that occurred following the Record Date, as well as any fractional shares that would have been issued but for which cash-in-lieu was paid). However, on a relative basis, some individual shareholders may have more shares of SLG’s common stock, and some individual shareholders may have fewer shares of our common stock, depending on their individual elections to receive cash or stock and as a result of the cash option being oversubscribed.
All share-related references and measurements including the number of shares outstanding, share prices, number of shares repurchased, earnings per share, dividends per share, and share-based compensation awards, have been retroactively adjusted to reflect the reverse stock split for all periods presented in this Quarterly Report on Form 10-Q.
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Table of Contents
SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
As of September 30, 2021, we owned the following interests in properties in the New York metropolitan area, primarily in midtown Manhattan. Our investments located outside of Manhattan are referred to as the Suburban properties:

|  |  |  | Consolidated |  | Unconsolidated |  | Total |  |
Location |  | Property Type |  | Number of Buildings |  | Approximate Square Feet (unaudited) |  | Number of Buildings |  | Approximate Square Feet (unaudited) |  | Number of Buildings |  | Approximate Square Feet (unaudited) |  | Weighted Average Occupancy(1) (unaudited)
Commercial: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Manhattan |  | Office |  | 14 |  |  | 8,499,045 |  |  | 10 |  |  | 12,004,183 |  |  | 24 |  |  | 20,503,228 |  |  | 92.5 | %
|  | Retail |  | 2 |  |  | 17,888 |  |  | 9 |  |  | 301,996 |  |  | 11 |  |  | 319,884 |  |  | 94.8 | %
|  | Development/Redevelopment | (1) | 8 |  |  | 2,538,284 |  |  | 3 |  |  | 3,275,508 |  |  | 11 |  |  | 5,813,792 |  |  | N/A
|  | Fee Interest |  | 1 |  |  | 7,684 |  |  | — |  |  | — |  |  | 1 |  |  | 7,684 |  |  | N/A
|  |  |  | 25 |  |  | 11,062,901 |  |  | 22 |  |  | 15,581,687 |  |  | 47 |  |  | 26,644,588 |  |  | 92.5 | %
Suburban |  | Office |  | 7 |  |  | 862,800 |  |  | — |  |  | — |  |  | 7 |  |  | 862,800 |  |  | 80.5 | %
Total commercial properties |  | 32 |  |  | 11,925,701 |  |  | 22 |  |  | 15,581,687 |  |  | 54 |  |  | 27,507,388 |  |  | 92.0 | %
Residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Manhattan |  | Residential |  | 1 |  |  | 82,250 |  |  | 6 |  |  | 445,934 |  |  | 7 |  |  | 528,184 |  |  | 95.6 | %
Total portfolio |  | 33 |  |  | 12,007,951 |  |  | 28 |  |  | 16,027,621 |  |  | 61 |  |  | 28,035,572 |  |  | 92.1 | %

(1)The weighted average occupancy for commercial properties represents the total occupied square footage divided by the total square footage at acquisition. The weighted average occupancy for residential properties represents the total occupied units divided by the total available units. Properties under construction are not included in the calculation of weighted average occupancy.
As of September 30, 2021, we also managed two office buildings owned by third parties encompassing approximately 2.1 million square feet (unaudited), and held debt and preferred equity investments with a book value of $1.1 billion, excluding less than $0.1 billion of debt and preferred equity investments and other financing receivables that are included in balance sheet line items other than the Debt and preferred equity investments line item.
Partnership Agreement
In accordance with the partnership agreement of the Operating Partnership, or the Operating Partnership Agreement, we allocate all distributions and profits and losses in proportion to the percentage of ownership interests of the respective partners, subject to the priority distributions with respect to preferred units and special provisions that apply to Long Term Incentive Plan ("LTIP") Units. As the managing general partner of the Operating Partnership, we are required to take such reasonable efforts, as determined by us in our sole discretion, to cause the Operating Partnership to distribute sufficient amounts to enable the payment of sufficient dividends by us to minimize any Federal income or excise tax at the Company level. Under the Operating Partnership Agreement, each limited partner has the right to redeem units of limited partnership interests for cash, or if we so elect, shares of SL Green's common stock on a one-for-one basis.
Basis of Quarterly Presentation
The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by accounting principles generally accepted in the United States for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for the fair presentation of the financial position of the Company and the Operating Partnership at September 30, 2021 and the results of operations for the periods presented have been included. The operating results for the period presented are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. These financial statements should be read in conjunction with the financial statements and accompanying notes included in the Annual Report on Form 10-K for the year ended December 31, 2020 of the Company and the Operating Partnership.
The consolidated balance sheet at December 31, 2020 has been derived from the audited financial statements as of that date but does not include all the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.
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Table of Contents
SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
Subsequent Events
In October 2021, the Company closed on the sale of 590 Fifth Avenue for a gross sales price of $103.0 million.
2. Significant Accounting Policies
Principles of Consolidation
The consolidated financial statements include our accounts and those of our subsidiaries, which are wholly-owned or controlled by us. Entities which we do not control through our voting interest and entities which are variable interest entities, but where we are not the primary beneficiary, are accounted for under the equity method. See Note 5, "Debt and Preferred Equity Investments" and Note 6, "Investments in Unconsolidated Joint Ventures." All significant intercompany balances and transactions have been eliminated.
We consolidate a VIE in which we are considered the primary beneficiary. The primary beneficiary is the entity that has (i) the power to direct the activities that most significantly impact the entity's economic performance and (ii) the obligation to absorb losses of the VIE or the right to receive benefits from the VIE that could be significant to the VIE.
Investment in Commercial Real Estate Properties
We allocate the purchase price of real estate to land and building (inclusive of tenant improvements) and, if determined to be material, intangibles, such as the value of above- and below-market leases and origination costs associated with the in-place leases. We depreciate the amount allocated to building (inclusive of tenant improvements) over their estimated useful lives, which generally range from 3 years to 40 years. We amortize the amount allocated to the above- and below-market leases over the remaining term of the associated lease, which generally range from 1 year to 15 years, and record it as either an increase (in the case of below-market leases) or a decrease (in the case of above-market leases) to rental income. We amortize the amount allocated to the values associated with in-place leases over the expected term of the associated lease, which generally ranges from 1 year to 15 years. If a tenant vacates its space prior to the contractual termination of the lease and no rental payments are being made on the lease, any unamortized balance of the related intangible will be written off. The tenant improvements and origination costs are amortized as an expense over the remaining life of the lease (or charged against earnings if the lease is terminated prior to its contractual expiration date). We assess fair value of the leases based on estimated cash flow projections that utilize appropriate discount rates and available market information. Estimates of future cash flows are based on a number of factors including the historical operating results, known trends, and market/economic conditions that may affect the property. To the extent acquired leases contain fixed rate renewal options that are below-market and determined to be material, we amortize such below-market lease value into rental income over the renewal period.
The Company classifies those leases under which the Company is the lessee at lease commencement as finance or operating leases. Leases qualify as finance leases if the lease transfers ownership of the asset at the end of the lease term, the lease grants an option to purchase the asset that we are reasonably certain to exercise, the lease term is for a major part of the remaining economic life of the asset, or the present value of the lease payments exceeds substantially all of the fair value of the asset. Leases that do not qualify as finance leases are deemed to be operating leases. At lease commencement the Company records a lease liability which is measured as the present value of the lease payments and a right of use asset which is measured as the amount of the lease liability and any initial direct costs incurred. The Company applies a discount rate to determine the present value of the lease payments. If the rate implicit in the lease is known, the Company uses that rate. If the rate implicit in the lease is not known, the Company uses a discount rate reflective of the Company’s collateralized borrowing rate given the term of the lease. To determine the discount rate, the Company employs a third party specialist to develop an analysis based primarily on the observable borrowing rates of the Company, other REITs, and other corporate borrowers with long-term borrowings. On the consolidated statements of operations, operating leases are expensed through operating lease rent while financing leases are expensed through amortization and interest expense. On the consolidated balance sheets, financing leases include the amounts previously captioned "Properties under capital lease." When applicable, the Company combines the consideration for lease and non-lease components in the calculation of the value of the lease obligation and right-of-use asset.
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Table of Contents
SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
On a periodic basis, we assess whether there are any indications that the value of our real estate properties may be impaired or that their carrying value may not be recoverable. A property's value is considered impaired if management's estimate of the aggregate future cash flows (undiscounted) to be generated by the property is less than the carrying value of the property. To the extent impairment has occurred, the loss will be measured as the excess of the carrying amount of the property over the fair value of the property as calculated in accordance with Accounting Standards Codification, or ASC 820. We also evaluate our real estate properties for impairment when a property has been classified as held for sale. Real estate assets held for sale are valued at the lower of their carrying value or fair value less costs to sell and depreciation expense is no longer recorded.
For the three and nine months ended September 30, 2021, we recognized a reduction of rental revenue of ($0.3 million) and ($4.0 million), respectively, for the amortization of aggregate above-market leases in excess of below-market leases resulting from the allocation of the purchase price of the applicable properties. For the three and nine months ended September 30, 2020, we recognized $1.6 million and $4.5 million, respectively, of additional rental revenue for the amortization of aggregate below-market leases in excess of above-market leases.
The following summarizes our identified intangible assets (acquired above-market leases and in-place leases) and intangible liabilities (acquired below-market leases) as of September 30, 2021 and December 31, 2020 (in thousands):

| September 30, 2021 |  | December 31, 2020
Identified intangible assets (included in other assets): |  |  |
Gross amount | $ | 226,709 |  |  | $ | 215,673 |
Accumulated amortization | (191,758) |  |  | (190,523) |
Net (1) | $ | 34,951 |  |  | $ | 25,150 |
Identified intangible liabilities (included in deferred revenue): |  |  |
Gross amount | $ | 225,029 |  |  | $ | 241,409 |
Accumulated amortization | (218,371) |  |  | (230,479) |
Net (1) | $ | 6,658 |  |  | $ | 10,930 |

(1) As of September 30, 2021 and December 31, 2020, no net intangible assets and no net intangible liabilities were reclassified to assets held for sale or liabilities related to assets held for sale.
Cash and Cash Equivalents
We consider all highly liquid investments with maturity of three months or less when purchased to be cash equivalents.
Restricted Cash
Restricted cash primarily consists of security deposits held on behalf of our tenants, interest reserves, as well as capital improvement and real estate tax escrows required under certain loan agreements.
Fair Value Measurements
See Note 16, "Fair Value Measurements."
Investment in Marketable Securities
At acquisition, we designate a debt security as held-to-maturity, available-for-sale, or trading. As of September 30, 2021, we did not have any debt securities designated as held-to-maturity or trading. We account for our available-for-sale securities at fair value pursuant to ASC 820-10, with the net unrealized gains or losses reported as a component of accumulated other comprehensive income or loss. The cost of marketable securities sold and the amount reclassified out of accumulated other comprehensive income into earnings is determined using the specific identification method. Credit losses are recognized in accordance with ASC 326. We account for our equity marketable securities at fair value pursuant to ASC 820-10, with the net unrealized gains or losses reported in net income.
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Table of Contents
SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
As of September 30, 2021 and December 31, 2020, we held the following marketable securities (in thousands):

| September 30, 2021 |  | December 31, 2020
Commercial mortgage-backed securities | $ | 24,355 |  |  | $ | 28,570 |
Total marketable securities available-for-sale | $ | 24,355 |  |  | $ | 28,570 |
Equity marketable securities | $ | 10,073 |  |  | $ | — |
Total investment in marketable securities | $ | 34,428 |  |  | $ | 28,570 |

The cost basis of the commercial mortgage-backed securities was $23.0 million and $27.5 million as of September 30, 2021 and December 31, 2020, respectively. These securities mature at various times through 2035. All securities were in an unrealized gain position as of September 30, 2021 and December 31, 2020 except for one security, which had an unrealized loss of $0.5 million and a fair market value of $7.2 million as of September 30, 2021, and an unrealized loss of $0.7 million and a fair value of $7.0 million as December 31, 2020. This marketable security was in a continuous unrealized loss position for more than 12 months as of September 30, 2021 and less than 12 months as of December 31, 2020. We do not intend to sell these securities, and it is more likely than not that we will not be required to sell the investments before recovery of their amortized cost bases.
We held equity marketable securities as of September 30, 2021 and no equity marketable securities as of December 31, 2020. We recognized $2.0 million and $0.1 million of unrealized gains for the three and nine months ended September 30, 2021, respectively.
We did not dispose of any debt or equity marketable securities during the three months ended September 30, 2021. During the nine months ended September 30, 2021, we received aggregate net proceeds of $4.5 million from the repayment of one debt marketable security. During the three and nine months ended September 30, 2020, we did not dispose of or receive repayment of any debt or equity marketable securities.
Investments in Unconsolidated Joint Ventures
We assess our investments in unconsolidated joint ventures for recoverability and if it is determined that a loss in value of the investment is other than temporary, we write down the investment to its fair value. We evaluate our equity investments for impairment based on each joint ventures' actual and projected cash flows. We do not believe that the values of any of our equity investments were impaired at September 30, 2021.
Deferred Lease Costs
Deferred lease costs consist of incremental fees and direct costs that would not have been incurred if the lease had not been obtained and are amortized on a straight-line basis over the related lease term.
Lease Classification
Lease classification for leases under which the Company is the lessor is evaluated at lease commencement and leases not classified as sales-type leases or direct financing leases are classified as operating leases. Leases qualify as sales-type leases if the contract includes either transfer of ownership clauses, certain purchase options, a lease term representing a major part of the economic life of the asset, or the present value of the lease payments and residual guarantees provided by the lessee exceeds substantially all of the fair value of the asset. Additionally, leasing an asset so specialized that it is not deemed to have any value to the Company at the end of the lease term may also result in classification as a sales-type lease. Leases qualify as direct financing leases when the present value of the lease payments and residual value guarantees provided by the lessee and unrelated third parties exceeds substantially all of the fair value of the asset and collection of the payments is probable.
Revenue Recognition
Rental revenue for operating leases is recognized on a straight-line basis over the term of the lease. Rental revenue recognition commences when the leased space is available for its intended use by the lessee.
To determine whether the leased space is available for its intended use by the lessee, management evaluates whether we are the owner of tenant improvements for accounting purposes or if the tenant is. When management concludes that we are the owner of tenant improvements, rental revenue recognition begins when the tenant takes possession of the finished space, which is when such tenant improvements are substantially complete. In certain instances, when management concludes that we are not the owner of tenant improvements, rental revenue recognition begins when the tenant takes possession of or controls the space.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
The excess of rents recognized over amounts contractually due pursuant to the underlying leases are included in deferred rents receivable on the consolidated balance sheets.
In addition to base rent, our tenants also generally will pay variable rent, which represents their pro rata share of increases in real estate taxes and certain operating expenses for the building over a base year. In some leases, in lieu of paying additional rent based upon increases in certain building operating expenses, the tenant will pay additional rent based upon increases in the wage rate paid to porters over the porters' wage rate in effect during a base year or increases in the consumer price index over the index value in effect during a base year. In addition, many of our leases contain fixed percentage increases over the base rent to cover escalations. Electricity is most often supplied by the landlord either on a sub-metered basis, or rent inclusion basis (i.e., a fixed fee is included in the rent for electricity, which amount may increase based upon increases in electricity rates or increases in electrical usage by the tenant). Base building services other than electricity (such as heat, air conditioning and freight elevator service during business hours, and base building cleaning) are typically provided at no additional cost, with the tenant paying additional rent only for services which exceed base building services or for services which are provided outside normal business hours. These escalations are based on actual expenses incurred in the prior calendar year. If the expenses in the current year are different from those in the prior year, then during the current year, the escalations will be adjusted to reflect the actual expenses for the current year.
Rental revenue is recognized if collectability is probable. If collectability of substantially all of the lease payments is assessed as not probable, any difference between the rental revenue recognized to date and the lease payments that have been collected is recognized as a current-period adjustment to rental revenue. A subsequent change in the assessment of collectability to probable may result in a current-period adjustment to rental revenue for any difference between the rental revenue that would have been recognized if collectability had always been assessed as probable and the rental revenue recognized to date.
We recognize lease concessions related to COVID-19, such as rent deferrals and abatements, in accordance with the Lease Modification Q&A issued by the FASB in April 2020, which provides entities with the option to elect to account for lease concessions as though the enforceable rights and obligations existed in the original lease. This election is only available when total cash flows resulting from the modified lease are substantially similar to the cash flows in the original lease. When total cash flows resulting from the modified lease are not substantially similar to the cash flows in the original lease, we account for the concession agreement as a new lease.
The Company provides its tenants with certain customary services for lease contracts such as common area maintenance and general security. We have elected to combine the non-lease components with the lease components of our operating lease agreements and account for them as a single lease component in accordance with ASC 842.
We record a gain or loss on sale of real estate assets when we no longer have a controlling financial interest in the entity owning the real estate, a contract exists with a third party and that third party has control of the assets acquired.
Investment income on debt and preferred equity investments is accrued based on the contractual terms of the instruments and when it is deemed collectible. Some debt and preferred equity investments provide for accrual of interest at specified rates, which differ from current payment terms. Interest is recognized on such loans at the accrual rate subject to management's determination that accrued interest is collectible. If management cannot make this determination, interest income above the current pay rate is recognized only upon actual receipt.
Deferred origination fees, original issue discounts and loan origination costs, if any, are recognized as an adjustment to interest income over the terms of the related investments using the effective interest method. Fees received in connection with loan commitments are also deferred until the loan is funded and are then recognized over the term of the loan as an adjustment to yield. Discounts or premiums associated with the purchase of loans are amortized or accreted into interest income as a yield adjustment on the effective interest method based on expected cash flows through the expected maturity date of the related investment. If we purchase a debt or preferred equity investment at a discount, intend to hold it until maturity and expect to recover the full value of the investment, we accrete the discount into income as an adjustment to yield over the term of the investment. If we purchase a debt or preferred equity investment at a discount with the intention of foreclosing on the collateral, we do not accrete the discount. For debt investments acquired at a discount for credit quality, the difference between contractual cash flows and expected cash flows at acquisition is not accreted. Anticipated exit fees, the collection of which is expected, are also recognized over the term of the loan as an adjustment to yield.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
We consider a debt and preferred equity investment to be past due when amounts contractually due have not been paid. Debt and preferred equity investments are placed on a non-accrual status at the earlier of the date at which payments become 90 days past due or when, in the opinion of management, a full recovery of interest income becomes doubtful. Interest income recognition is resumed on any debt or preferred equity investment that is on non-accrual status when such debt or preferred equity investment becomes contractually current and performance is demonstrated to be resumed.
We may syndicate a portion of the loans that we originate or sell the loans individually. When a transaction meets the criteria for sale accounting, we recognize gain or loss based on the difference between the sales price and the carrying value of the loan sold. Any related unamortized deferred origination fees, original issue discounts, loan origination costs, discounts or premiums at the time of sale are recognized as an adjustment to the gain or loss on sale, which is included in investment income on the consolidated statement of operations. Any fees received at the time of sale or syndication are recognized as part of investment income.
Asset management fees are recognized on a straight-line basis over the term of the asset management agreement.
Debt and Preferred Equity Investments
Debt and preferred equity investments are presented at the net amount expected to be collected in accordance with ASC 326. An allowance for loan losses is deducted from the amortized cost basis of the financial assets to present the net carrying value at the amount expected to be collected through the expected maturity date of such investments. The expense for loan loss and other investment reserves is the charge to earnings to adjust the allowance for loan losses to the appropriate level. Amounts are written off from the allowance when we de-recognize the related investment either as a result of a sale of the investment or acquisition of equity interests in the collateral.
The Company evaluates the amount expected to be collected based on current market and economic conditions, historical loss information, and reasonable and supportable forecasts. The Company's assumptions are derived from both internal data and external data which may include, among others, governmental economic projections for the New York City Metropolitan area, public data on recent transactions and filings for securitized debt instruments. This information is aggregated by asset class and adjusted for duration. Based on these inputs, loans are evaluated at the individual asset level. In certain instances, we may also use a probability-weighted model that considers the likelihood of multiple outcomes and the amount expected to be collected for each outcome.
The evaluation of the possible credit deterioration associated with the performance and/or value of the underlying collateral property as well as the financial and operating capability of the borrower/sponsor requires significant judgment, which include both asset level and market assumptions over the relevant time period.
In addition, quarterly, the Company assigns each loan a risk rating. Based on a 3-point scale, loans are rated “1” through “3,” from lower risk to higher risk, which ratings are defined as follows: 1 - Low Risk Assets - Low probability of loss, 2 - Watch List Assets - Higher potential for loss, 3 - High Risk Assets - Loss more likely than not. Loans with risk ratings of 2 or above are evaluated to determine whether the expected risk of loss is appropriately captured through the combination of our expectations of current conditions, historical loss information and supportable forecasts described above or whether risk characteristics specific to the loan warrant the use of a probability-weighted model.
Financing investments that are classified as held for sale are carried at the expected amount to be collected or fair market value using available market information obtained through consultation with dealers or other originators of such investments as well as discounted cash flow models based on Level 3 data pursuant to ASC 820-10. As circumstances change, management may conclude not to sell an investment designated as held for sale. In such situations, the investment will be reclassified at its expected amount to be collected.
Other financing receivables that are included in balance sheet line items other than the Debt and preferred equity investments line are also measured at the net amount expected to be collected.
Accrued interest receivable amounts related to these debt and preferred equity investment and other financing receivables are recorded at the net amount expected to be collected within Other assets in the consolidated balance sheets. Accrued interest receivables that are written off are recognized as an expense in loan loss and other investment reserves.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
Income Taxes
SL Green is taxed as a REIT under Section 856(c) of the Code. As a REIT, SL Green generally is not subject to Federal income tax. To maintain its qualification as a REIT, SL Green must distribute at least 90% of its REIT taxable income to its stockholders and meet certain other requirements. If SL Green fails to qualify as a REIT in any taxable year, SL Green will be subject to Federal income tax on its taxable income at regular corporate rates. SL Green may also be subject to certain state, local and franchise taxes. Under certain circumstances, Federal income and excise taxes may be due on its undistributed taxable income.
The Operating Partnership is a partnership and, as a result, all income and losses of the partnership are allocated to the partners for inclusion in their respective income tax returns. The only provision for income taxes included in the consolidated statements of operations relates to the Operating Partnership’s consolidated taxable REIT subsidiaries. The Operating Partnership may also be subject to certain state, local and franchise taxes.
We have elected, and may elect in the future, to treat certain of our corporate subsidiaries as taxable REIT subsidiaries, or TRSs. In general, TRSs may perform non-customary services for the tenants of the Company, hold assets that we cannot hold directly and generally may engage in any real estate or non-real estate related business. The TRSs generate income, resulting in Federal and state income tax liability for these entities.
During the three months ended September 30, 2021, we recorded no Federal, state and local tax provision. During the nine months ended September 30, 2021, we recorded a Federal, state and local tax provision of $1.5 million. During the three months ended September 30, 2020, we recorded no Federal, state and local provision. During the nine months ended September 30, 2020 we recorded a Federal, state and local provision of $2.0 million.
We follow a two-step approach for evaluating uncertain tax positions. Recognition (step one) occurs when an enterprise concludes that a tax position, based solely on its technical merits, is more-likely-than-not to be sustained upon examination. Measurement (step two) determines the amount of benefit that is more-likely-than-not to be realized upon settlement. Derecognition of a tax position that was previously recognized would occur when a company subsequently determines that a tax position no longer meets the more-likely-than-not threshold of being sustained. The use of a valuation allowance as a substitute for derecognition of tax positions is prohibited.
Use of Estimates
The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
Concentrations of Credit Risk
Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash investments, debt and preferred equity investments and accounts receivable. We place our cash investments with high quality financial institutions. The collateral securing our debt and preferred equity investments is located in New York City. See Note 5, "Debt and Preferred Equity Investments."
We perform initial and ongoing evaluations of the credit quality of our tenants and require most tenants to provide security deposits or letters of credit. Though these security deposits and letters of credit are insufficient to meet the total value of a tenant's lease obligation, they are a measure of good faith and a potential source of funds to offset the economic costs associated with lost revenue from that tenant and the costs associated with re-tenanting a space. The properties in our real estate portfolio are located in the New York metropolitan area. The tenants located in our buildings operate in various industries. Other than one tenant, Viacom CBS Inc., which accounted for 6.3% of our share of annualized cash rent as of September 30, 2021, no other tenant in our portfolio accounted for more than 5.0% of our share of annualized cash rent, including our share of joint venture annualized rent, as of September 30, 2021.
For the three months ended September 30, 2021, the following properties contributed more than 5.0% of our annualized cash rent from office properties, including our share of annualized cash rent from joint venture office properties:

Property | Three months ended September 30, 2021
11 Madison Avenue | 10.5%
420 Lexington Ave (Graybar) | 8.0%
1515 Broadway | 7.9%
1185 Avenue of the Americas | 7.6%
280 Park Avenue | 6.5%
919 Third Avenue | 5.2%
485 Lexington Avenue | 5.1%
555 West 57th Street | 5.1%
100 Church Street | 5.0%

Reclassification
Certain prior year balances have been reclassified to conform to our current year presentation.
Accounting Standards Updates
In August 2020, the FASB issued Accounting Standard Update, or "ASU," No. 2020-06 Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40). ASU 2020-06 simplifies the accounting for convertible instruments by reducing the number of accounting models for convertible debt instruments and convertible preferred stock, removes certain settlement conditions that are required for equity contracts to qualify for the derivative scope exception and also simplifies the diluted earnings per share calculation in certain areas. ASU 2020-06 is effective for reporting periods beginning after December 15, 2021, with early adoption permitted. We are currently evaluating the impact of the adoption of ASU 2020-06 on our consolidated financial statements, but do not believe the adoption of this standard will have a material impact on our consolidated financial statements.
In March 2020, the FASB issued ASU No. 2020-04 Reference Rate Reform (Topic 848) Facilitation of the Effects of Reference Rate Reform on Financial Reporting and then in January 2021, the FASB issued ASU No. 2021-01. The amendments provide practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance is optional and is effective between March 12, 2020 and December 31, 2022. The guidance may be elected over time as reference rate reform activities occur. During the first quarter of 2020, the Company elected to apply the hedge accounting expedients related to probability and the assessments of effectiveness for future LIBOR-indexed cash flows to assume that the index upon which future hedged transactions will be based matches the index on the corresponding derivatives. Application of these expedients preserves the presentation of derivatives consistent with past presentation. The Company continues to evaluate the impact of the guidance and may apply other elections as applicable as additional changes in the market occur.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
In July 2021, the FASB issued ASU No. 2021-05 Leases (Topic 842) Lessors - Certain Leases with Variable Lease Payments. ASU 2021-05 amends the lease classification requirements for lessors when classifying and accounting for a lease with variable lease payments that do not depend on a reference rate index or a rate. The update provides criteria, that if met, the lease would be classified and accounted for as an operating lease. ASU 2021-05 is effective for reporting periods beginning after December 15, 2021, with early adoption permitted. We are currently evaluating the impact of the adoption of ASU 2021-05 on our consolidated financial statements, but do not believe the adoption of this standard will have a material impact on our consolidated financial statements.
3. Property Acquisitions
The following table summarizes the properties acquired during the nine months ended September 30, 2021:

Property |  | Acquisition Date |  | Property Type |  | Approximate Square Feet |  | Gross Asset Valuation (in millions)
885 Third Avenue (1) |  | January 2021 |  | Fee Interest |  | 625,000 |  |  | $ | 387.9 |
461 Fifth Avenue (2) |  | June 2021 |  | Fee Interest |  | 200,000 |  |  | 28.0 |
1591-1597 Broadway (3) |  | September 2021 |  | Fee Interest |  | 7,684 |  |  | 121.0 |
690 Madison Avenue (4) |  | September 2021 |  | Fee Interest |  | 7,848 |  |  | 72.2 |

(1)In January 2021, pursuant to the partnership documents of our 885 Third Avenue investment, certain participating rights of the common member expired. As a result, it was determined that this investment is a VIE of which we are the primary beneficiary, and the investment was consolidated in our financial statements. Upon consolidating the entity, the assets and liabilities of the entity were recorded at fair value. Prior to January 2021, the investment was accounted for under the equity method. See Note 6, "Investments in Unconsolidated Joint Ventures" and Note 16, "Fair Value Measurements."
(2)In April 2021, the Company exercised its option to acquire the fee interest in the property from the ground lessor and the Company acquired the fee interest in June 2021. The Company held the leasehold interest in the property prior to exercising its option.
(3)A third party has asserted ownership rights to the fee, which the Company is contesting.
(4)In September 2021, the Company was the successful bidder for the fee interest in 690 Madison Avenue at the foreclosure of the asset. The property previously served as collateral for a debt and preferred equity investment. We recorded the assets acquired and liabilities assumed at fair value. See Note 5, "Debt and Preferred Equity Investments" and Note 16, "Fair Value Measurements."
4. Properties Held for Sale and Property Dispositions
Properties Held for Sale
As of September 30, 2021, no properties were classified as held for sale.
Property Dispositions
The following table summarizes the properties disposed of during the nine months ended September 30, 2021:

Property |  | Disposition Date |  | Property Type |  | Approximate Square Feet |  | Gross Asset Valuation (in millions) |  | Gain (Loss) (in millions) (1)
712 Madison Avenue (2) |  | January 2021 |  | Fee Interest |  | 6,600 |  |  | $ | 43.0 |  |  | $ | (1.4) |
133 Greene Street (3) |  | February 2021 |  | Fee Interest |  | 6,425 |  |  | 15.8 |  |  | 0.2 |
106 Spring Street (3) |  | March 2021 |  | Fee Interest |  | 5,928 |  |  | 35.0 |  |  | (2.8) |
635-641 Sixth Avenue |  | June 2021 |  | Fee Interest |  | 267,000 |  |  | 325.0 |  |  | 99.4 |
220 East 42nd Street (4) |  | July 2021 |  | Fee Interest |  | 1,135,000 |  |  | 783.5 |  |  | 175.1 |

(1)The gains (losses) on sale are net of $11.7 million of employee compensation accrued in connection with the realization of the investment gains during the nine months ended September 30, 2021. Additionally, the amounts do not include adjustments for expenses recorded in subsequent periods.
(2)Disposition resulted from the buyer exercising its purchase option under a ground lease arrangement.
(3)In the first quarter of 2021, the property was foreclosed by the lender.
(4)In July 2021, the Company sold a 49% interest, which resulted in the Company no longer retaining a controlling interest in the entity, as defined in ASC 810, and the deconsolidation of the 51.0% interest we retained. We recorded our investment at fair value which resulted in the recognition of a fair value adjustment of $206.8 million, which is reflected in the Company's consolidated statements of operations within Purchase price and other fair value adjustments. See Note 6, "Investments in Unconsolidated Joint Venture."
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
5. Debt and Preferred Equity Investments
Below is a summary of the activity in our debt and preferred equity investments for the nine months ended September 30, 2021 and the twelve months ended December 31, 2020 (in thousands):

| September 30, 2021 |  | December 31, 2020
Balance at beginning of year (1) | $ | 1,076,542 |  |  | $ | 1,580,306 |
Debt investment originations/fundings/accretion (2) | 104,358 |  |  | 389,300 |
Preferred equity investment originations/accretion (2) | 9,823 |  |  | 167,042 |
Redemptions/sales/syndications/equity ownership/amortization (3) | (145,196) |  |  | (1,048,643) |
Net change in loan loss reserves | 6,583 |  |  | (11,463) |
Balance at end of period (1) | $ | 1,052,110 |  |  | $ | 1,076,542 |

(1)Net of unamortized fees, discounts, and premiums.
(2)Accretion includes amortization of fees and discounts and paid-in-kind investment income.
(3)Certain participations in debt investments that were sold or syndicated, but did not meet the conditions for sale accounting, are included in Other assets and Other liabilities on the consolidated balance sheets.
Below is a summary of our debt and preferred equity investments as of September 30, 2021 (dollars in thousands):

| Floating Rate |  | Fixed Rate |  | Total Carrying Value | Senior Financing | Weighted Average Yield at End of Period | Maturity (1)
Type | Carrying Value | Face Value | Interest Rate |  | Carrying Value | Face Value | Interest Rate |
Senior Mortgage Debt | $ | 17,995 |  | $ | 18,241 |  | L + 3.50% |  | $ | 1,250 |  | $ | 1,250 |  | 3.50% |  | $ | 19,245 |  | $ | — |  | 6.57% | 2021 - 2022
Mezzanine Debt | 263,499 |  | 264,778 |  | L + 4.95% - 12.97% |  | 499,757 |  | 510,116 |  | 2.90% - 14.30% |  | 763,256 |  | 4,637,210 |  | 6.53% | 2021 - 2029
Preferred Equity | — |  | — |  | — |  | 269,609 |  | 270,850 |  | 6.50% - 11.00% |  | 269,609 |  | 1,962,750 |  | 9.90% | 2022 - 2027
Balance at end of period | $ | 281,494 |  | $ | 283,019 |  |  |  | $ | 770,616 |  | $ | 782,216 |  |  |  | $ | 1,052,110 |  | $ | 6,599,960 |  |  |

(1)Excludes available extension options to the extent they have not been exercised as of the date of this filing.
The following table is a rollforward of our total allowance for loan losses for the nine months ended September 30, 2021 and the twelve months ended December 31, 2020 (in thousands):

| September 30, 2021 |  | December 31, 2020
Balance at beginning of year | $ | 13,213 |  |  | $ | 1,750 |
Cumulative adjustment upon adoption of ASC 326 | — |  |  | 27,803 |
Current period provision for loan loss | — |  |  | 20,693 |
Write-offs charged against the allowance(1) | (6,583) |  |  | (37,033) |
Balance at end of period(2) | $ | 6,630 |  |  | $ | 13,213 |

(1)Includes $0.3 million and $19.0 million of charges recorded against investments that were sold during the nine months ended September 30, 2021 and the year ended December 31, 2020, respectively. These charges are included in loan loss and other investment reserves, net of recoveries, in our consolidated statements of operations for the year ended December 31, 2020.
(2)As of September 30, 2021, all financing receivables on non-accrual had an allowance for loan loss except for one debt investment with a carrying value of $225.4 million.
As of September 30, 2021 and December 31, 2020, all debt and preferred equity investments were performing in accordance with their respective terms, with the exception of one investment with a carrying value, net of reserves, of $6.8 million, as discussed in the Debt Investments table further below.
No other financing receivables were 90 days past due as of September 30, 2021 and December 31, 2020 with the exception of a $27.7 million financing receivable included in Other assets, which was put on non-accrual in August 2018 as a result of an interest default.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
The following table sets forth the carrying value of our debt and preferred equity investment portfolio by risk rating as of September 30, 2021 and December 31, 2020 (dollars in thousands):

Risk Rating |  | September 30, 2021 |  | December 31, 2020
1 - Low Risk Assets - Low probability of loss |  | $ | 693,139 |  |  | $ | 695,035 |
2 - Watch List Assets - Higher potential for loss |  | 352,081 |  |  | 365,167 |
3 - High Risk Assets - Loss more likely than not |  | 6,890 |  |  | 16,340 |
|  | $ | 1,052,110 |  |  | $ | 1,076,542 |

The following table sets forth the carrying value of our debt and preferred equity investment portfolio by year of origination and risk rating as of September 30, 2021 (dollars in thousands):

|  | As of September 30, 2021
Risk Rating |  | 2021(1) |  | 2020(1) |  | 2019(1) |  | Prior(1) |  | Total
1 - Low Risk Assets - Low probability of loss |  | $ | 64,515 |  |  | $ | 276,930 |  |  | $ | 57,230 |  |  | $ | 294,464 |  |  | $ | 693,139 |
2 - Watch List Assets - Higher potential for loss |  | — |  |  | — |  |  | 253,096 |  |  | 98,985 |  |  | 352,081 |
3 - High Risk Assets - Loss more likely than not |  | — |  |  | — |  |  | — |  |  | 6,890 |  |  | 6,890 |
|  | $ | 64,515 |  |  | $ | 276,930 |  |  | $ | 310,326 |  |  | $ | 400,339 |  |  | $ | 1,052,110 |

(1) Year in which the investment was originated or acquired by us or in which a material modification occurred.
We have determined that we have one portfolio segment of financing receivables as of September 30, 2021 and December 31, 2020 comprised of commercial real estate which is primarily recorded in debt and preferred equity investments.
Included in Other assets is an additional amount of financing receivables representing loans to joint venture partners totaling $50.3 million and $66.2 million as of September 30, 2021 and December 31, 2020, respectively. The Company recorded no provisions for loan losses related to these financing receivables for the three and nine months ended September 30, 2021. The Company recorded no provision and $6.3 million for loan losses related to these financing receivables for three and nine months ended September 30, 2020, respectively. All of these loans have a risk rating of 2 and were performing in accordance with their respective terms with the exception of one financing receivable, which was put on nonaccrual in August 2018, that has a risk rating of 3 and a carrying value as of September 30, 2021 of $2.5 million.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
Debt Investments
As of September 30, 2021 and December 31, 2020, we held the following debt investments with an aggregate weighted average current yield of 6.53% as of September 30, 2021 (dollars in thousands):

Loan Type |  | September 30, 2021 Future Funding Obligations |  | September 30, 2021 Senior Financing |  | September 30, 2021 Carrying Value (1) |  | December 31, 2020 Carrying Value (1) |  | Maturity Date (2)
Fixed Rate Investments: |  |  |  |  |  |  |  |  |  |
Mortgage/Mezzanine Loan (3) |  | $ | — |  |  | $ | — |  |  | $ | 56,250 |  |  | $ | 56,244 |  |  | October 2021
Mezzanine Loan |  | — |  |  | 280,000 |  |  | 42,889 |  |  | 41,057 |  |  | August 2022
Mezzanine Loan (4) |  | — |  |  | 370,642 |  |  | 225,367 |  |  | 225,204 |  |  | June 2023
Mezzanine Loan |  | — |  |  | 272,659 |  |  | 64,515 |  |  | — |  |  | June 2023
Mezzanine Loan (5a)(6) |  | — |  |  | 105,000 |  |  | 13,366 |  |  | 13,366 |  |  | June 2024
Mezzanine Loan |  | — |  |  | 95,000 |  |  | 30,000 |  |  | 30,000 |  |  | January 2025
Mezzanine Loan (7) |  | — |  |  | 1,712,750 |  |  | 55,250 |  |  | 55,250 |  |  | June 2027
Mezzanine Loan |  | — |  |  | 85,000 |  |  | 20,000 |  |  | 20,000 |  |  | December 2029
Junior Mortgage |  | — |  |  | — |  |  | — |  |  | 32,888 |  |  |
Mezzanine Loan |  | — |  |  | — |  |  | — |  |  | 3,500 |  |  |
Total fixed rate |  | $ | — |  |  | $ | 2,921,051 |  |  | $ | 507,637 |  |  | $ | 477,509 |  |  |
Floating Rate Investments: |  |  |  |  |  |  |  |  |  |
Mezzanine Loan |  | — |  |  | 275,000 |  |  | 49,996 |  |  | 49,956 |  |  | April 2022
Mezzanine Loan |  | 5,209 |  |  | 179,763 |  |  | 37,230 |  |  | 35,318 |  |  | July 2022
Mezzanine Loan (5b) |  | — |  |  | 1,115,000 |  |  | 132,249 |  |  | 127,915 |  |  | March 2022
Mezzanine Loan |  | 4,268 |  |  | 54,000 |  |  | 7,697 |  |  | 6,958 |  |  | May 2022
Mortgage and Mezzanine Loan |  | 30,437 |  |  | — |  |  | 27,729 |  |  | 14,011 |  |  | December 2022
Mezzanine Loan |  | 47,497 |  |  | 92,396 |  |  | 26,594 |  |  | 19,889 |  |  | May 2023
Junior Mortgage Participation/Mezzanine Loan (8) |  | — |  |  | — |  |  | — |  |  | 15,733 |  |  |
Mezzanine Loan |  | — |  |  | — |  |  | — |  |  | 29,106 |  |  |
Mortgage Loan |  | — |  |  | — |  |  | — |  |  | 53,574 |  |  |
Total floating rate |  | $ | 87,411 |  |  | $ | 1,716,159 |  |  | $ | 281,495 |  |  | $ | 352,460 |  |  |
Allowance for loan loss |  | — |  |  | — |  |  | (6,630) |  |  | (13,213) |  |  |
Total |  | $ | 87,411 |  |  | $ | 4,637,210 |  |  | $ | 782,502 |  |  | $ | 816,756 |  |  |

(1)Carrying value is net of discounts, premiums, original issue discounts and deferred origination fees.
(2)Represents contractual maturity, excluding any unexercised extension options.
(3)In November 2021, this loan was extended to December 2021.
(4)This loan was put on non-accrual in July 2020 and remains on non-accrual as of September 30, 2021. No investment income has been recognized subsequent to it being put on non-accrual. The Company is in discussions with the borrower.
(5)Carrying value is net of the following amounts that were sold or syndicated, which are included in Other assets and Other liabilities on the consolidated balance sheets as a result of the transfers not meeting the conditions for sale accounting: (a) $12.0 million, and (b) $0.4 million.
(6)This loan went into default and was put on non-accrual in June 2020 and remains on non-accrual as of September 30, 2021. No investment income has been recognized subsequent to it being put on non-accrual. The Company is in discussions with the borrower. Additionally, we determined the borrower entity to be a VIE which we are not the primary beneficiary.
(7)On October 31, 2021, HNA, through an affiliated entity, filed for Chapter 11 bankruptcy protection on account of its investment in 245 Park Avenue, together with another asset in Chicago. The Company will be contesting the filing, on the basis that the filing was done in bad faith and in violation of HNA's agreements with the Company.
(8)In September 2021, the Company was the successful bidder for the fee interest in 690 Madison Avenue at the foreclosure of the asset, at which time the Company's outstanding principal and accrued interest balance were credited to our equity investment in the property. See Note 3, "Property Acquisitions" and Note 16, "Fair Value Measurements."
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
Preferred Equity Investments
As of September 30, 2021 and December 31, 2020, we held the following preferred equity investments with an aggregate weighted average current yield of 9.90% as of September 30, 2021 (dollars in thousands):

Type |  | September 30, 2021 Future Funding Obligations |  | September 30, 2021 Senior Financing |  | September 30, 2021 Carrying Value (1) |  | December 31, 2020 Carrying Value (1) |  | Mandatory Redemption (2)
Preferred Equity (3) |  | $ | — |  |  | $ | 1,712,750 |  |  | $ | 159,218 |  |  | $ | 154,691 |  |  | June 2022
Preferred Equity |  | — |  |  | 250,000 |  |  | 110,390 |  |  | 105,095 |  |  | February 2027
Total Preferred Equity |  | $ | — |  |  | $ | 1,962,750 |  |  | $ | 269,608 |  |  | $ | 259,786 |  |  |
Allowance for loan loss |  | — |  |  | — |  |  | — |  |  | — |  |  |
Total |  | $ | — |  |  | $ | 1,962,750 |  |  | $ | 269,608 |  |  | $ | 259,786 |  |  |

(1)Carrying value is net of deferred origination fees.
(2)Represents contractual maturity, excluding any unexercised extension options.
(3)On October 31, 2021, HNA, through an affiliated entity, filed for Chapter 11 bankruptcy protection on account of its investment in 245 Park Avenue, together with another asset in Chicago. The Company will be contesting the filing, on the basis that the filing was done in bad faith and in violation of HNA's agreements with the Company.
6. Investments in Unconsolidated Joint Ventures
We have investments in several real estate joint ventures with various partners. As of September 30, 2021, the book value of these investments was $3.0 billion, net of investments with negative book values totaling $100.2 million for which we have an implicit commitment to fund future capital needs.
As of September 30, 2021, 800 Third Avenue, 21 East 66th Street, and certain properties within the Stonehenge Portfolio are VIEs in which we are not the primary beneficiary. As of December 31, 2020, 800 Third Avenue, 21 East 66th Street, 605 West 42nd Street, and certain properties within the Stonehenge Portfolio were VIEs in which we were not the primary beneficiary. Our net equity investment in these VIEs was $87.4 million and $134.0 million as of September 30, 2021 and December 31, 2020, respectively. Our maximum loss is limited to the amount of our equity investment in these VIEs. See the "Principles of Consolidation" section of Note 2, "Significant Accounting Policies." All other investments below are voting interest entities. As we do not control the joint ventures listed below, we account for them under the equity method of accounting.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
The table below provides general information on each of our joint ventures as of September 30, 2021:

Property | Partner | Ownership Interest (1) | Economic Interest (1) | Unaudited Approximate Square Feet |  |
100 Park Avenue | Prudential Real Estate Investors | 49.90% | 49.90% | 834,000 |  |  |
717 Fifth Avenue | Wharton Properties/Private Investor | 10.92% | 10.92% | 119,500 |  |  |
800 Third Avenue | Private Investors | 60.52% | 60.52% | 526,000 |  |  |
919 Third Avenue | New York State Teacher's Retirement System | 51.00% | 51.00% | 1,454,000 |  |  |
11 West 34th Street | Private Investor/Wharton Properties | 30.00% | 30.00% | 17,150 |  |  |
280 Park Avenue | Vornado Realty Trust | 50.00% | 50.00% | 1,219,158 |  |  |
1552-1560 Broadway (2) | Wharton Properties | 50.00% | 50.00% | 57,718 |  |  |
10 East 53rd Street | Canadian Pension Plan Investment Board | 55.00% | 55.00% | 354,300 |  |  |
21 East 66th Street (3) | Private Investors | 32.28% | 32.28% | 13,069 |  |  |
650 Fifth Avenue (4) | Wharton Properties | 50.00% | 50.00% | 69,214 |  |  |
121 Greene Street | Wharton Properties | 50.00% | 50.00% | 7,131 |  |  |
Stonehenge Portfolio | Various | Various | Various | 1,439,016 |  |  |
11 Madison Avenue | PGIM Real Estate | 60.00% | 60.00% | 2,314,000 |  |  |
One Vanderbilt Avenue | National Pension Service of Korea/Hines Interest LP | 71.01% | 71.01% | 1,657,198 |  |  |
Worldwide Plaza (5) | RXR Realty / New York REIT | 24.95% | 24.95% | 2,048,725 |  |  |
1515 Broadway | Allianz Real Estate of America | 56.87% | 56.87% | 1,750,000 |  |  |
2 Herald Square | Israeli Institutional Investor | 51.00% | 51.00% | 369,000 |  |  |
115 Spring Street | Private Investor | 51.00% | 51.00% | 5,218 |  |  |
15 Beekman (6) | A fund managed by Meritz Alternative Investment Management | 20.00% | 20.00% | 221,884 |  |  |
85 Fifth Avenue | Wells Fargo | 36.30% | 36.30% | 12,946 |  |  |
One Madison Avenue (7) | National Pension Service of Korea/Hines Interest LP | 50.50% | 50.50% | 1,048,700 |  |  |
220 East 42nd Street (8) | A fund managed by Meritz Alternative Investment Management | 51.00% | 51.00% | 1,135,000 |  |  |

(1)Ownership interest and economic interest represent the Company's interests in the joint venture as of September 30, 2021. Changes in ownership or economic interests within the current year are disclosed in the notes below.
(2)The joint venture also owns a long-term leasehold interest in the retail space and certain other spaces at 1560 Broadway, which is adjacent to 1552 Broadway.
(3)We hold a 32.28% interest in three retail units and one residential unit at the property and a 16.14% interest in two residential units at the property.
(4)The joint venture owns a long-term leasehold interest in the retail space at 650 Fifth Avenue.
(5)In May 2021, the Company and RXR Realty jointly acquired the 1.2% interest in the property previously held by a private investor. This resulted in an increase in the Company's ownership interest of 0.6%.
(6)In 2020, the Company formed a joint venture, which then entered into a long-term sublease with the Company.
(7)In 2020, the Company admitted partners to the One Madison Avenue development project, which resulted in the Company no longer retaining a controlling interest in the entity, as defined in ASC 810, and the deconsolidation of our remaining 50.5% interest. We recorded our investment at fair value, which resulted in the recognition of a fair value adjustment of $187.5 million in 2020 and a fair value adjustment of $2.7 million during the nine months ended September 30, 2021. The fair value of our investment was determined by the terms of the joint venture agreement. The partners have committed aggregate equity to the project totaling no less than $492.2 million and their ownership interest in the joint venture is based on their capital contributions, up to an aggregate maximum of 49.5%. As of September 30, 2021, the total of the two partners' ownership interests based on equity contributed was 9.0%.
(8)In July 2021, the Company sold a 49% interest, which resulted in the Company no longer retaining a controlling interest in the entity, as defined in ASC 810, and the deconsolidation of the 51.0% interest we retained. We recorded our investment at fair value which resulted in the recognition of a fair value adjustment of $206.8 million during the three and nine months ended September 30, 2021. The fair value of our investment was determined by the terms of the joint venture agreement.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
Disposition of Joint Venture Interests or Properties
The following table summarizes the investments in unconsolidated joint ventures disposed of during the nine months ended September 30, 2021:

Property |  | Ownership Interest Disposed |  | Disposition Date |  | Gross Asset Valuation (in millions) |  | (Loss) Gain on Sale (in millions) (1) (2)
885 Third Avenue (3) |  | N/A |  | January 2021 |  | N/A |  | N/A
55 West 46th Street - Tower 46 |  | 25.0% |  | March 2021 |  | $ | 275.0 |  |  | $ | (15.2) |
605 West 42nd Street - Sky |  | 20.0% |  | June 2021 |  | 858.1 |  |  | 8.9 |
400 East 57th Street (4) |  | 41.0% |  | September 2021 |  | 133.5 |  |  | (1.0) |

(1)Represents the Company's share of the gain or loss.
(2)The (losses) gains on sale are net of $1.4 million of employee compensation accrued in connection with the realization of the investment gains during the nine months ended September 30, 2021. Additionally, the amounts do not include adjustments for expenses recorded in subsequent periods.
(3)In January 2021, pursuant to the partnership documents of our 885 Third Avenue investment, certain participating rights of the common member expired. As a result, it was determined that we are the primary beneficiary of the VIE and the investment was consolidated in our financial statements. See Note 3, "Property Acquisitions."
(4)Prior to the close of the transaction and in connection with the contract we entered into to sell the property in April 2021, we recorded a charge of $5.7 million, which is included in Depreciable real estate reserves and impairment in the consolidated statements of operations.
Joint Venture Mortgages and Other Loans Payable
We generally finance our joint ventures with non-recourse debt. In certain cases we may provide guarantees or master leases for tenant space, which terminate upon the satisfaction of specified circumstances or repayment of the underlying loans. The mortgage notes and other loans payable collateralized by the respective joint venture properties and assignment of leases as of September 30, 2021 and December 31, 2020, respectively, are as follows (dollars in thousands):

Property |  | Economic Interest (1) |  | Current Maturity Date | Final Maturity Date (2) |  | Interest Rate (3) |  | September 30, 2021 |  | December 31, 2020
Fixed Rate Debt: |  |  |  |  |  |  |  |  |  |  |  |
717 Fifth Avenue (mortgage) |  | 10.92 | % |  | July 2022 | July 2022 |  |  | 4.45 | % |  | $ | 300,000 |  |  | $ | 300,000 |
717 Fifth Avenue (mezzanine) |  | 10.92 | % |  | July 2022 | July 2022 |  |  | 5.50 | % |  | 355,328 |  |  | 355,328 |
650 Fifth Avenue (mortgage) |  | 50.00 | % |  | October 2022 | October 2022 |  |  | 4.46 | % |  | 210,000 |  |  | 210,000 |
650 Fifth Avenue (mezzanine) |  | 50.00 | % |  | October 2022 | October 2022 |  |  | 5.45 | % |  | 65,000 |  |  | 65,000 |
21 East 66th Street |  | 32.28 | % |  | April 2023 | April 2028 |  |  | 3.60 | % |  | 12,000 |  |  | 12,000 |
919 Third Avenue |  | 51.00 | % |  | June 2023 | June 2023 |  |  | 5.12 | % |  | 500,000 |  |  | 500,000 |
1515 Broadway |  | 56.87 | % |  | March 2025 | March 2025 |  |  | 3.93 | % |  | 806,627 |  |  | 820,607 |
11 Madison Avenue |  | 60.00 | % |  | September 2025 | September 2025 |  |  | 3.84 | % |  | 1,400,000 |  |  | 1,400,000 |
800 Third Avenue |  | 60.52 | % |  | February 2026 | February 2026 |  |  | 3.37 | % |  | 177,000 |  |  | 177,000 |
Worldwide Plaza |  | 24.95 | % |  | November 2027 | November 2027 |  |  | 3.98 | % |  | 1,200,000 |  |  | 1,200,000 |
One Vanderbilt Avenue |  | 71.01 | % |  | July 2031 | July 2031 |  |  | 2.95 | % |  | 3,000,000 |  |  | — |
Stonehenge Portfolio (4) |  | Various |  | Various | Various |  |  | 3.50 | % |  | 195,685 |  |  | 195,899 |
400 East 57th Street |  |  |  |  |  |  |  |  |  | — |  |  | 97,024 |
885 Third Avenue |  |  |  |  |  |  |  |  |  | — |  |  | 272,000 |
Total fixed rate debt |  |  |  |  |  |  |  |  |  | $ | 8,221,640 |  |  | $ | 5,604,858 |
Floating Rate Debt: |  |  |  |  |  |  |  |  |  |  |  |
1552 Broadway (5) |  | 50.00 | % |  | October 2021 | October 2022 |  | L+ | 2.65 | % |  | $ | 195,000 |  |  | $ | 195,000 |
2 Herald Square (5) |  | 51.00 | % |  | November 2021 | November 2023 |  | L+ | 1.45 | % |  | 214,500 |  |  | 214,500 |
11 West 34th Street |  | 30.00 | % |  | January 2022 | January 2023 |  | L+ | 1.45 | % |  | 23,000 |  |  | 23,000 |
280 Park Avenue (6) |  | 50.00 | % |  | September 2022 | September 2024 |  | L+ | 1.73 | % |  | 1,200,000 |  |  | 1,200,000 |
121 Greene Street |  | 50.00 | % |  | November 2022 | November 2022 |  | L+ | 2.00 | % |  | 13,367 |  |  | 15,000 |
220 East 42nd Street |  | 51.00 | % |  | June 2023 | June 2025 |  | L+ | 2.75 | % |  | 510,000 |  |  | — |
115 Spring Street |  | 51.00 | % |  | September 2023 | September 2023 |  | L+ | 3.40 | % |  | 65,550 |  |  | 65,550 |

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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)

Property |  | Economic Interest (1) |  | Current Maturity Date | Final Maturity Date (2) |  | Interest Rate (3) |  | September 30, 2021 |  | December 31, 2020
100 Park Avenue |  | 49.90 | % |  | December 2023 | December 2025 |  | L+ | 2.25 | % |  | 360,000 |  |  | 360,000 |
15 Beekman (7) |  | 20.00 | % |  | January 2024 | July 2025 |  | L+ | 1.50 | % |  | 32,687 |  |  | 11,212 |
10 East 53rd Street |  | 55.00 | % |  | February 2025 | February 2025 |  | L+ | 1.35 | % |  | 220,000 |  |  | 220,000 |
One Madison Avenue (8) |  | 50.50 | % |  | November 2025 | November 2026 |  | L+ | 3.35 | % |  | 106,049 |  |  | — |
21 East 66th Street |  | 32.28 | % |  | June 2033 | June 2033 |  | T+ | 2.75 | % |  | 643 |  |  | 677 |
One Vanderbilt Avenue |  |  |  |  |  |  |  |  |  | — |  |  | 1,210,329 |
605 West 42nd Street |  |  |  |  |  |  |  |  |  | — |  |  | 550,000 |
55 West 46th Street |  |  |  |  |  |  |  |  |  | — |  |  | 192,524 |
Total floating rate debt |  |  |  |  |  |  |  |  |  | $ | 2,940,796 |  |  | $ | 4,257,792 |
Total joint venture mortgages and other loans payable |  |  |  |  |  | $ | 11,162,436 |  |  | $ | 9,862,650 |
Deferred financing costs, net |  |  |  |  |  |  |  |  |  | (139,427) |  |  | (113,446) |
Total joint venture mortgages and other loans payable, net |  |  |  |  |  | $ | 11,023,009 |  |  | $ | 9,749,204 |

(1)Economic interest represents the Company's interests in the joint venture as of September 30, 2021. Changes in ownership or economic interests, if any, within the current year are disclosed in the notes to the investment in unconsolidated joint ventures table above.
(2)Reflects exercise of all available options. The ability to exercise extension options may be subject to certain tests based on the operating performance of the property.
(3)Interest rates as of September 30, 2021, taking into account interest rate hedges in effect during the period. Floating rate debt is presented with the stated spread over the 30-day LIBOR ("L") or 1-year Treasury ("T").
(4)Comprised of three mortgages totaling $132.4 million that mature in April 2028 and two mortgages totaling $63.5 million that mature in July 2029.
(5)In October 2021, the maturity date of this loan was extended by one year.
(6)In September 2021, the maturity date of this loan was extended by one year.
(7)This loan is a $125.0 million construction facility. Advances under the loan are subject to costs incurred.
(8)The loan is a $1.25 billion construction facility with an initial term of five years with one, one year extension option. Advances under the loan are subject to costs incurred. In conjunction with the loan, we provided partial guarantees for interest and principal payments, the amounts of which are based on certain construction milestones and operating metrics.
We are entitled to receive fees for providing management, leasing, construction supervision and asset management services to certain of our joint ventures. We earned $5.3 million and $12.0 million from these services, net of our ownership share of the joint ventures, for the three and nine months ended September 30, 2021, respectively. We earned $2.2 million and $6.1 million from these services, net of our ownership share of the joint ventures, for the three and nine months ended September 30, 2020, respectively. In addition, we have the ability to earn incentive fees based on the ultimate financial performance of certain of the joint venture properties.
The combined balance sheets for the unconsolidated joint ventures, at September 30, 2021 and December 31, 2020 are as follows (in thousands):

| September 30, 2021 |  | December 31, 2020
Assets (1) |  |  |
Commercial real estate property, net | $ | 14,720,722 |  |  | $ | 16,143,880 |
Cash and restricted cash | 791,702 |  |  | 357,076 |
Tenant and other receivables, related party receivables, and deferred rents receivable | 506,129 |  |  | 403,883 |
Other assets | 1,840,483 |  |  | 2,001,612 |
Total assets | $ | 17,859,036 |  |  | $ | 18,906,451 |
Liabilities and equity (1) |  |  |
Mortgages and other loans payable, net | $ | 11,023,009 |  |  | $ | 9,749,204 |
Deferred revenue | 1,216,079 |  |  | 1,341,571 |
Lease liabilities | 982,309 |  |  | 1,002,563 |
Other liabilities | 308,300 |  |  | 464,107 |
Equity | 4,329,339 |  |  | 6,349,006 |
Total liabilities and equity | $ | 17,859,036 |  |  | $ | 18,906,451 |
Company's investments in unconsolidated joint ventures | $ | 3,028,084 |  |  | $ | 3,823,322 |

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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
(1)At September 30, 2021, $429.2 million of net unamortized basis differences between the amount at which our investments are carried and our share of equity in net assets of the underlying property will be amortized through equity in net income (loss) from unconsolidated joint ventures over the remaining life of the underlying items having given rise to the differences.
The combined statements of operations for the unconsolidated joint ventures, from acquisition date through the three and nine months ended September 30, 2021 and 2020, are as follows (in thousands):

| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Total revenues | $ | 314,288 |  |  | $ | 292,929 |  |  | $ | 905,017 |  |  | $ | 846,967 |
Operating expenses | 54,157 |  |  | 44,650 |  |  | 142,800 |  |  | 131,578 |
Real estate taxes | 58,367 |  |  | 56,459 |  |  | 166,974 |  |  | 161,566 |
Operating lease rent | 5,644 |  |  | 6,385 |  |  | 16,931 |  |  | 18,947 |
Interest expense, net of interest income | 90,710 |  |  | 79,723 |  |  | 248,588 |  |  | 245,685 |
Amortization of deferred financing costs | 10,661 |  |  | 5,575 |  |  | 24,249 |  |  | 15,197 |
Depreciation and amortization | 119,537 |  |  | 103,262 |  |  | 351,372 |  |  | 300,700 |
Total expenses | 339,076 |  |  | 296,054 |  |  | 950,914 |  |  | 873,673 |
Loss on early extinguishment of debt | (1,158) |  |  | — |  |  | (2,484) |  |  | — |
Net loss before gain on sale | $ | (25,946) |  |  | $ | (3,125) |  |  | $ | (48,381) |  |  | $ | (26,706) |
Company's equity in net loss from unconsolidated joint ventures | $ | (15,487) |  |  | $ | (432) |  |  | $ | (31,321) |  |  | $ | (15,445) |

7. Deferred Costs
Deferred costs as of September 30, 2021 and December 31, 2020 consisted of the following (in thousands):

| September 30, 2021 |  | December 31, 2020
Deferred leasing costs | $ | 401,826 |  |  | $ | 447,002 |
Less: accumulated amortization | (277,189) |  |  | (269,834) |
Deferred costs, net | $ | 124,637 |  |  | $ | 177,168 |

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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
8. Mortgages and Other Loans Payable
The mortgages and other loans payable collateralized by the respective properties and assignment of leases or debt investments as of September 30, 2021 and December 31, 2020, respectively, were as follows (dollars in thousands):

Property |  | Current Maturity Date | Final Maturity Date (1) |  | Interest Rate (2) |  | September 30, 2021 |  | December 31, 2020
Fixed Rate Debt: |  |  |  |  |  |  |  |  |  |
100 Church Street |  | July 2022 | July 2022 |  |  | 4.68% |  | $ | 201,405 |  |  | $ | 204,875 |
420 Lexington Avenue |  | October 2024 | October 2040 |  |  | 3.99% |  | 290,032 |  |  | 294,035 |
Landmark Square |  | January 2027 | January 2027 |  |  | 4.90% |  | 100,000 |  |  | 100,000 |
485 Lexington Avenue |  | February 2027 | February 2027 |  |  | 4.25% |  | 450,000 |  |  | 450,000 |
1080 Amsterdam (3) |  | February 2027 | February 2027 |  |  | 3.59% |  | 34,716 |  |  | 34,773 |
Total fixed rate debt |  |  |  |  |  |  |  | $ | 1,076,153 |  |  | $ | 1,083,683 |
Floating Rate Debt: |  |  |  |  |  |  |  |  |  |
185 Broadway (4) |  | November 2021 | November 2023 |  | L+ | 2.85% |  | $ | 189,699 |  |  | $ | 158,478 |
609 Fifth Avenue |  | March 2022 | March 2025 |  | L+ | 2.95% |  | 52,882 |  |  | 57,651 |
719 Seventh Avenue |  | September 2023 | September 2023 |  | L+ | 1.20% |  | 50,000 |  |  | 50,000 |
690 Madison Avenue |  | July 2024 | July 2025 |  | L+ | 1.00% |  | 60,000 |  |  | — |
220 East 42nd Street (5) |  |  |  |  |  |  |  | — |  |  | 510,000 |
133 Greene Street |  |  |  |  |  |  |  | — |  |  | 15,523 |
106 Spring Street |  |  |  |  |  |  |  | — |  |  | 38,025 |
FHLB Facility |  |  |  |  |  |  |  | — |  |  | 10,000 |
FHLB Facility |  |  |  |  |  |  |  | — |  |  | 15,000 |
FHLB Facility |  |  |  |  |  |  |  | — |  |  | 35,000 |
712 Madison Avenue |  |  |  |  |  |  |  | — |  |  | 28,000 |
2017 Master Repurchase Agreement (6) |  |  |  |  |  |  |  | — |  |  | — |
Total floating rate debt |  |  |  |  |  |  |  | $ | 352,581 |  |  | $ | 917,677 |
Total mortgages and other loans payable |  |  |  |  |  |  |  | $ | 1,428,734 |  |  | $ | 2,001,360 |
Deferred financing costs, net of amortization |  |  |  |  |  |  |  | (6,447) |  |  | (21,388) |
Total mortgages and other loans payable, net |  |  |  |  |  |  |  | $ | 1,422,287 |  |  | $ | 1,979,972 |

(1)Reflects exercise of all available options. The ability to exercise extension options may be subject to certain tests based on the operating performance of the property.
(2)Interest rate as of September 30, 2021, taking into account interest rate hedges in effect during the period. Floating rate debt is presented with the stated spread over the 30-day LIBOR, unless otherwise specified.
(3)The loan is comprised of a $33.9 million mortgage loan and $0.9 million mezzanine loan with a fixed interest rate of 350 basis points and 700 basis points, respectively, for the first five years and is prepayable without penalty at the end of fifth year.
(4)This loan is a $225.0 million construction facility, with reductions in interest cost based on meeting certain conditions, and has an initial three year term with two one year extension options. In October 2021, an extension option was exercised, and the maturity date of this loan was extended by one year. Advances under the loan are subject to incurred costs and funded equity requirements.
(5)In July 2021, the Company sold a 49% interest in the property. See Note 4, "Property Dispositions."
(6)In June 2021, we exercised a one year extension option which extended the maturity date to June 2022. As of September 30, 2021, there was no outstanding balance on the $400 million facility.
As of September 30, 2021 and December 31, 2020, the gross book value of the properties and debt and preferred equity investments collateralizing the mortgages and other loans payable was approximately $2.1 billion and $2.5 billion, respectively.
Federal Home Loan Bank of New York ("FHLB") Facility
As of December 31, 2020, the Company’s wholly-owned subsidiary, Ticonderoga Insurance Company, or Ticonderoga, a Vermont licensed captive insurance company, was a member of the Federal Home Loan Bank of New York, or FHLBNY. As a member, Ticonderoga was able to borrow funds from the FHLBNY in the form of secured advances that bore interest at a floating rate. As a result of a Final Ruling from the Federal Housing Finance Authority, the regulator of the Federal Home Loan Bank system, all captive insurance company memberships were terminated as of February 2021. As such, all advances to Ticonderoga were repaid prior to such termination.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
Master Repurchase Agreement
The Company entered into a Master Repurchase Agreement, or MRA, known as the 2017 MRA, which provides us with the ability to sell certain mortgage investments with a simultaneous agreement to repurchase the same at a certain date or on demand. We seek to mitigate risks associated with our repurchase agreement by managing the credit quality of our assets, early repayments, interest rate volatility, liquidity, and market value. The margin call provisions under our repurchase facility permit valuation adjustments based on capital markets activity, and are not limited to collateral-specific credit marks. To monitor credit risk associated with our debt investments, our asset management team regularly reviews our investment portfolio and is in contact with our borrowers in order to monitor the collateral and enforce our rights as necessary. The risk associated with potential margin calls is further mitigated by our ability to collateralize the facility with additional assets from our portfolio of debt investments, our ability to satisfy margin calls with cash or cash equivalents and our access to additional liquidity. As of September 30, 2021, there have been no margin calls on the 2017 MRA.
In April 2018, we increased the maximum facility capacity from $300.0 million to $400.0 million. The facility bears interest on a floating rate basis at a spread to 30-day LIBOR based on the pledged collateral and advance rate and is scheduled to mature in June 2022. As of September 30, 2021, the facility had no outstanding balance.
9. Corporate Indebtedness
2017 Credit Facility
In November 2017, we entered into an amendment to the credit facility, referred to as the 2017 credit facility, that was originally entered into by the Company in November 2012, or the 2012 credit facility. As of September 30, 2021, the 2017 credit facility consisted of a $1.5 billion revolving credit facility, a $1.3 billion term loan (or "Term Loan A"), and a $200.0 million term loan (or "Term Loan B") with maturity dates of March 31, 2022, March 31, 2023, and November 21, 2024, respectively. The revolving credit facility has two six-month, as-of-right extension options to March 31, 2023. We also have an option, subject to customary conditions, to increase the capacity of the credit facility to $4.5 billion at any time prior to the maturity dates for the revolving credit facility and term loans without the consent of existing lenders, by obtaining additional commitments from our existing lenders and other financial institutions.
As of September 30, 2021, the 2017 credit facility bore interest at a spread over 30-day LIBOR ranging from (i) 82.5 basis points to 155 basis points for loans under the revolving credit facility, (ii) 90 basis points to 175 basis points for loans under Term Loan A, and (iii) 85 basis points to 165 basis points for loans under Term Loan B, in each case based on the credit rating assigned to the senior unsecured long term indebtedness of the Company. In instances where there are either only two ratings available or where there are more than two and the difference between them is one rating category, the applicable rating shall be the highest rating. In instances where there are more than two ratings and the difference between the highest and the lowest is two or more rating categories, then the applicable rating used is the average of the highest two, rounded down if the average is not a recognized category.
As of September 30, 2021, the applicable spread was 100 basis points for the revolving credit facility, 110 basis points for Term Loan A, and 100 basis points for Term Loan B. We are required to pay quarterly in arrears a 12.5 to 30 basis point facility fee on the total commitments under the revolving credit facility based on the credit rating assigned to the senior unsecured long term indebtedness of the Company. As of September 30, 2021, the facility fee was 20 basis points.
As of September 30, 2021, we had $2.0 million of outstanding letters of credit, $220.0 million drawn under the revolving credit facility and $1.5 billion outstanding under the term loan facilities, with total undrawn capacity of $1.3 billion under the 2017 credit facility. As of September 30, 2021 and December 31, 2020, the revolving credit facility had a carrying value of $216.9 million and $105.3 million, respectively, net of deferred financing costs. As of September 30, 2021 and December 31, 2020, the term loan facilities had a carrying value of $1.5 billion and $1.5 billion, respectively, net of deferred financing costs.
The Company and the Operating Partnership are borrowers jointly and severally obligated under the 2017 credit facility. The 2017 credit facility includes certain restrictions and covenants (see Restrictive Covenants below).
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
Senior Unsecured Notes
The following table sets forth our senior unsecured notes and other related disclosures as of September 30, 2021 and December 31, 2020, respectively, by scheduled maturity date (dollars in thousands):

Issuance |  | September 30, 2021 Unpaid Principal Balance |  | September 30, 2021 Accreted Balance |  | December 31, 2020 Accreted Balance |  | Interest Rate (1) |  | Initial Term (in Years) |  | Maturity Date
October 5, 2017 (2) |  | $ | 500,000 |  |  | $ | 499,885 |  |  | $ | 499,803 |  |  |  | 3.25 | % |  | 5 |  | October 2022
November 15, 2012 (3) |  | 300,000 |  |  | 301,275 |  |  | 302,086 |  |  |  | 4.50 | % |  | 10 |  | December 2022
December 17, 2015 (4) |  | 100,000 |  |  | 100,000 |  |  | 100,000 |  |  |  | 4.27 | % |  | 10 |  | December 2025
August 7, 2018 |  | — |  |  | — |  |  | 350,000 |  |  |  | — | % |  | 3 |  | August 2021
|  | $ | 900,000 |  |  | $ | 901,160 |  |  | $ | 1,251,889 |  |  |  |  |  |  |  |
Deferred financing costs, net |  |  |  | (2,042) |  |  | (3,670) |  |  |  |  |  |  |  |
|  | $ | 900,000 |  |  | $ | 899,118 |  |  | $ | 1,248,219 |  |  |  |  |  |  |  |

(1)Interest rate as of September 30, 2021, taking into account interest rate hedges in effect during the period.
(2)Issued by the Operating Partnership with the Company as the guarantor.
(3)In October 2017, the Company and the Operating Partnership as co-obligors issued an additional $100.0 million of 4.50% senior unsecured notes due December 2022. The notes were priced at 105.334% of par.
(4)Issued by the Company and the Operating Partnership as co-obligors.
Restrictive Covenants
The terms of the 2017 credit facility and certain of our senior unsecured notes include certain restrictions and covenants which may limit, among other things, our ability to pay dividends, make certain types of investments, incur additional indebtedness, incur liens and enter into negative pledge agreements and dispose of assets, and which require compliance with financial ratios relating to the maximum ratio of total indebtedness to total asset value, a minimum ratio of EBITDA to fixed charges, a maximum ratio of secured indebtedness to total asset value and a maximum ratio of unsecured indebtedness to unencumbered asset value. The dividend restriction referred to above provides that we will not, during any time when a default is continuing, make distributions with respect to common stock or other equity interests, except to enable the Company to continue to qualify as a REIT for Federal income tax purposes. As of September 30, 2021 and December 31, 2020, we were in compliance with all such covenants.
Junior Subordinated Deferrable Interest Debentures
In June 2005, the Company and the Operating Partnership issued $100.0 million in unsecured trust preferred securities through a newly formed trust, SL Green Capital Trust I, or the Trust, which is a wholly-owned subsidiary of the Operating Partnership. The securities mature in 2035 and bear interest at a floating rate of 125 basis points over the three-month LIBOR. Interest payments may be deferred for a period of up to eight consecutive quarters if the Operating Partnership exercises its right to defer such payments. The Trust preferred securities are redeemable at the option of the Operating Partnership, in whole or in part, with no prepayment premium. We do not consolidate the Trust even though it is a variable interest entity as we are not the primary beneficiary. Because the Trust is not consolidated, we have recorded the debt on our consolidated balance sheets and the related payments are classified as interest expense.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
Principal Maturities
Combined aggregate principal maturities of mortgages and other loans payable, the 2017 credit facility, trust preferred securities, senior unsecured notes and our share of joint venture debt as of September 30, 2021, including as-of-right extension options, were as follows (in thousands):

| Scheduled Amortization |  | Mortgages and Other Loans Payable |  | Revolving Credit Facility |  | Unsecured Term Loans |  | Trust Preferred Securities |  | Senior Unsecured Notes |  | Total |  | Joint Venture Debt
Remaining 2021 | $ | 2,744 |  |  | $ | 189,699 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 192,443 |  |  | $ | 209,672 |
2022 | 8,754 |  |  | 250,666 |  |  | — |  |  | — |  |  | — |  |  | 800,000 |  |  | 1,059,420 |  |  | 227,056 |
2023 | 6,583 |  |  | 50,000 |  |  | 220,000 |  |  | 1,300,000 |  |  | — |  |  | — |  |  | 1,576,583 |  |  | 750,696 |
2024 | 5,268 |  |  | 332,750 |  |  | — |  |  | 200,000 |  |  | — |  |  | — |  |  | 538,018 |  |  | 623,047 |
2025 | 812 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 100,000 |  |  | 100,812 |  |  | 1,436,027 |
Thereafter | 911 |  |  | 580,547 |  |  | — |  |  | — |  |  | 100,000 |  |  | — |  |  | 681,458 |  |  | 2,543,144 |
| $ | 25,072 |  |  | $ | 1,403,662 |  |  | $ | 220,000 |  |  | $ | 1,500,000 |  |  | $ | 100,000 |  |  | $ | 900,000 |  |  | $ | 4,148,734 |  |  | $ | 5,789,642 |

Consolidated interest expense, excluding capitalized interest, was comprised of the following (in thousands):

| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Interest expense before capitalized interest | $ | 34,054 |  |  | $ | 42,595 |  |  | $ | 112,423 |  |  | $ | 144,345 |
Interest on financing leases | 1,229 |  |  | 2,198 |  |  | 4,215 |  |  | 6,010 |
Interest capitalized | (20,141) |  |  | (20,677) |  |  | (58,395) |  |  | (57,528) |
Interest income | (335) |  |  | (580) |  |  | (1,088) |  |  | (1,727) |
Interest expense, net | $ | 14,807 |  |  | $ | 23,536 |  |  | $ | 57,155 |  |  | $ | 91,100 |

10. Related Party Transactions
Cleaning/ Security/ Messenger and Restoration Services
Alliance Building Services, or Alliance, and its affiliates, who provide services to certain properties owned by us, are partially owned by Gary Green, a son of Stephen L. Green, who serves as a member and as the chairman emeritus of our Board of Directors. Alliance’s affiliates include First Quality Maintenance, L.P., or First Quality, Classic Security LLC, Bright Star Couriers LLC and Onyx Restoration Works, and provide cleaning, extermination, security, messenger, and restoration services, respectively. In addition, First Quality has the non-exclusive opportunity to provide cleaning and related services to individual tenants at our properties on a basis separately negotiated with any tenant seeking such additional services. The Service Corporation has entered into an arrangement with Alliance whereby it will receive a profit participation above a certain threshold for services provided by Alliance to certain tenants at certain buildings above the base services specified in their lease agreements.
Income earned from the profit participation, which is included in Other income on the consolidated statements of operations, was $0.4 million and $1.1 million for the three and nine months ended September 30, 2021, respectively, and $0.1 million and $1.1 million for the three and nine months ended September 30, 2020, respectively.
We also recorded expenses, inclusive of capitalized expenses, of $3.8 million and $9.4 million for the three and nine months ended September 30, 2021, respectively, and $3.0 million and $9.7 million for the three and nine months ended September 30, 2020, respectively, for these services (excluding services provided directly to tenants).
Management Fees
S.L. Green Management Corp., a consolidated entity, receives property management fees from an entity in which Stephen L. Green owns an interest. We received management fees from this entity of $0.2 million and $0.5 million for the three and nine months ended September 30, 2021, respectively, and $0.1 million and $0.4 million for the three and nine months ended September 30, 2020, respectively.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
One Vanderbilt Investment
In December 2016, we entered into agreements with entities owned and controlled by our Chairman and CEO, Marc Holliday, and our President, Andrew Mathias, pursuant to which they agreed to make an investment in our One Vanderbilt project at the appraised fair market value for the interests acquired. This investment entitles these entities to receive approximately 1.50% - 1.80% and 1.00% - 1.20%, respectively, of any profits realized by the Company from its One Vanderbilt project in excess of the Company’s capital contributions. The entities have no right to any return of capital. Accordingly, subject to previously disclosed repurchase rights, these interests will have no value and will not entitle these entities to any amounts (other than limited distributions to cover tax liabilities incurred) unless and until the Company has received distributions from the One Vanderbilt project in excess of the Company’s aggregate investment in the project. In the event that the Company does not realize a profit on its investment in the project (or would not realize a profit based on the value at the time the interests are repurchased), the entities owned and controlled by Messrs. Holliday and Mathias will lose the entire amount of their investment. The entities owned and controlled by Messrs. Holliday and Mathias paid $1.4 million and $1.0 million, respectively, which equal the fair market value of the interests acquired as of the date the investment agreements were entered into as determined by an independent third party appraisal that we obtained.
One Vanderbilt Lease
In November 2018, we entered into a lease agreement with the One Vanderbilt Avenue joint venture covering certain floors at the property. In March 2021, the lease commenced and we relocated our corporate headquarters to the leased space. For the three and nine months ended September 30, 2021, we recorded $0.7 million and $1.6 million, respectively, of rent expense under the lease, which is included in Marketing, general and administrative in the consolidated statements of operations. See Note 19, “Commitments and Contingencies.”
Other
We are entitled to receive fees for providing management, leasing, construction supervision and asset management services to certain of our joint ventures as further described in Note 6, "Investments in Unconsolidated Joint Ventures." Amounts due from joint ventures and related parties as of September 30, 2021 and December 31, 2020 consisted of the following (in thousands):

| September 30, 2021 |  | December 31, 2020
Due from joint ventures | $ | 26,896 |  |  | $ | 27,006 |
Other | 8,778 |  |  | 7,651 |
Related party receivables | $ | 35,674 |  |  | $ | 34,657 |

11. Noncontrolling Interests on the Company's Consolidated Financial Statements
Noncontrolling interests represent the common and preferred units of limited partnership interest in the Operating Partnership not held by the Company as well as third party equity interests in our other consolidated subsidiaries. Noncontrolling interests in the Operating Partnership are shown in the mezzanine equity while the noncontrolling interests in our other consolidated subsidiaries are shown in the equity section of the Company’s consolidated financial statements.
Common Units of Limited Partnership Interest in the Operating Partnership
As of September 30, 2021 and December 31, 2020, the noncontrolling interest unit holders owned 5.50%, or 3,888,034 units, and 5.44%, or 3,938,823 units, of the Operating Partnership, respectively, inclusive of retroactive adjustments to reflect the reverse stock split effectuated by SL Green in January 2021. As of September 30, 2021, 3,888,034 shares of our common stock were reserved for issuance upon the redemption of units of limited partnership interest of the Operating Partnership.
Noncontrolling interests in the Operating Partnership is recorded at the greater of its cost basis or fair market value based on the closing stock price of our common stock at the end of the reporting period.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
Below is a summary of the activity relating to the noncontrolling interests in the Operating Partnership for the nine months ended September 30, 2021 and the twelve months ended December 31, 2020 (in thousands):

| September 30, 2021 |  | December 31, 2020
Balance at beginning of period | $ | 358,262 |  |  | $ | 409,862 |
Distributions | (11,882) |  |  | (12,652) |
Issuance of common units | 11,910 |  |  | 12,018 |
Redemption and conversion of common units | (41,516) |  |  | (36,085) |
Net income | 28,489 |  |  | 20,016 |
Accumulated other comprehensive loss allocation | 229 |  |  | (2,299) |
Fair value adjustment | 17,245 |  |  | (32,598) |
Balance at end of period | $ | 362,737 |  |  | $ | 358,262 |

Preferred Units of Limited Partnership Interest in the Operating Partnership
Below is a summary of the preferred units of limited partnership interest in the Operating Partnership as of September 30, 2021:

Issuance |  | Stated Distribution Rate |  | Number of Units Authorized |  | Number of Units Issued |  | Number of Units Outstanding |  | Annual Dividend Per Unit(1) |  | Liquidation Preference Per Unit(2) |  | Conversion Price Per Unit(3) |  | Date of Issuance
Series A (4) |  | 3.50 | % |  | 109,161 |  |  | 109,161 |  |  | 109,161 |  |  | $ | 35.0000 |  |  | $ | 1,000.00 |  |  | $ | — |  |  | August 2015
Series F |  | 7.00% |  | 60 |  |  | 60 |  |  | 60 |  |  | 70.0000 |  |  | 1,000.00 |  |  | 29.12 |  |  | January 2007
Series G (5) |  | 4.50% |  | 1,902,000 |  |  | 1,902,000 |  |  | 718,697 |  |  | 1.1250 |  |  | 25.00 |  |  | 88.50 |  |  | January 2012
Series K |  | 3.50% |  | 700,000 |  |  | 563,954 |  |  | 341,677 |  |  | 0.8750 |  |  | 25.00 |  |  | 134.67 |  |  | August 2014
Series L |  | 4.00% |  | 500,000 |  |  | 378,634 |  |  | 372,634 |  |  | 1.0000 |  |  | 25.00 |  |  | — |  |  | August 2014
Series M |  | 3.75% |  | 1,600,000 |  |  | 1,600,000 |  |  | 96,357 |  |  | 0.9375 |  |  | 25.00 |  |  | — |  |  | February 2015
Series P |  | 4.00% |  | 200,000 |  |  | 200,000 |  |  | 200,000 |  |  | 1.0000 |  |  | 25.00 |  |  | — |  |  | July 2015
Series Q |  | 3.50% |  | 268,000 |  |  | 268,000 |  |  | 268,000 |  |  | 0.8750 |  |  | 25.00 |  |  | 148.95 |  |  | July 2015
Series R |  | 3.50% |  | 400,000 |  |  | 400,000 |  |  | 400,000 |  |  | 0.8750 |  |  | 25.00 |  |  | 154.89 |  |  | August 2015
Series S |  | 4.00% |  | 1,077,280 |  |  | 1,077,280 |  |  | 1,077,280 |  |  | 1.0000 |  |  | 25.00 |  |  | — |  |  | August 2015
Series V |  | 3.50% |  | 40,000 |  |  | 40,000 |  |  | 40,000 |  |  | 0.8750 |  |  | 25.00 |  |  | — |  |  | May 2019
Series W (6) |  | (6) |  |  | 1 |  |  | 1 |  |  | 1 |  |  | (6) |  |  | (6) |  |  | (6) |  |  | January 2020

(1)Dividends are cumulative, subject to certain provisions.
(2)Units are redeemable at any time at par for cash at the option of the unitholder unless otherwise specified.
(3)If applicable, units are convertible into a number of common units of limited partnership interest in the Operating Partnership equal to (i) the liquidation preference plus accumulated and unpaid distributions on the conversion date divided by (ii) the amount shown in the table.
(4)Issued through a consolidated subsidiary. The units are convertible on a one-for-one basis, into the Series B Preferred Units of limited partnership interest, or the Subsidiary Series B Preferred Units. The Subsidiary Series B Preferred Units can be converted at any time, at the option of the unitholder, into a number of common stock equal to 6.71348 shares of common stock for each Subsidiary Series B Preferred Unit. As of September 30, 2021, no Subsidiary Series B Preferred Units have been issued.
(5)Common units of limited partnership interest in the Operating Partnership issued in a conversion may be redeemed in exchange for our common stock on a 1-to-1 basis. The Series G Preferred Units also provide the holder with the right to require the Operating Partnership to repurchase the Series G Preferred Units for cash before January 31, 2022.
(6)The Series W preferred unit was issued in January 2020 in exchange for the then-outstanding Series O preferred unit. The holder of the Series W preferred unit is entitled to quarterly dividends in an amount calculated as (i) 1,350 multiplied by (ii) the current distribution per common unit of limited partnership in SL Green Operating Partnership. The holder has the right to require the Operating Partnership to repurchase the Series W unit for cash, or convert the Series W unit for Class B units, in each case at a price that is determined based on the closing price of the Company's common stock at the time such right is exercised. The unit's liquidation preference is the fair market value of the unit plus accrued distributions at the time of a liquidation event.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
Below is a summary of the activity relating to the preferred units in the Operating Partnership for the nine months ended September 30, 2021 and the twelve months ended December 31, 2020 (in thousands):

| September 30, 2021 |  | December 31, 2020
Balance at beginning of period | $ | 202,169 |  |  | $ | 283,285 |
Issuance of preferred units | — |  |  | — |
Redemption of preferred units | (3,631) |  |  | (82,750) |
Dividends paid on preferred units | (5,077) |  |  | (6,163) |
Accrued dividends on preferred units | 5,042 |  |  | 7,797 |
Balance at end of period | $ | 198,503 |  |  | $ | 202,169 |

12. Stockholders’ Equity of the Company
Common Stock
Our authorized capital stock consists of 260,000,000 shares, $0.01 par value per share, consisting of 160,000,000 shares of common stock, $0.01 par value per share, 75,000,000 shares of excess stock, at $0.01 par value per share, and 25,000,000 shares of preferred stock, par value $0.01 per share. As of September 30, 2021, 66,865,416 shares of common stock and no shares of excess stock were issued and outstanding.
On December 4, 2020, our Board of Directors declared the Total Dividend. The Total Dividend was paid on January 15, 2021 to shareholders of record at the close of business on the Record Date. Shareholders had the opportunity to elect to receive the Total Dividend in the form of all cash or all stock, subject to proration if either option was oversubscribed. Shareholders who elected to receive cash received, for each share of common stock they owned as of the Record Date, approximately $0.3735 in cash and 0.0279 shares of common stock. Shareholders who elected to receive shares received, for each share of common stock they owned as of the Record Date, approximately 0.0343 shares of common stock. The number of shares issued was calculated based on the volume weighted average trading price of SLG's common stock between January 5-7, 2021, of $58.15 per share.
To mitigate the dilutive impact of the common stock issued in the special dividend, the Board of Directors also authorized a reverse stock split, which was effective after markets closed on January 20, 2021. On January 8, 2021, a committee of the Board of Directors calculated the ratio for the reverse stock split of our issued and outstanding shares of common stock as 1.02918-for-1. After the issuance of the dividend and the completion of the reverse stock split, the number of shares of our common stock outstanding was equivalent to the number of total shares outstanding on the Record Date (not including any issuances or repurchases that occurred following the Record Date, as well as any fractional shares that would have been issued but for which cash-in-lieu was paid). However, on a relative basis, some individual shareholders may have more shares of SLG’s common stock, and some individual shareholders may have fewer shares of our common stock, depending on their individual elections to receive cash or stock and as a result of the cash option being oversubscribed.
All share-related references and measurements including the number of shares outstanding, share prices, number of shares repurchased, earnings per share, dividends per share, and share-based compensation awards, have been retroactively adjusted to reflect the reverse stock split for all periods presented in this Quarterly Report on Form 10-Q.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
Share Repurchase Program
In August 2016, our Board of Directors approved a $1.0 billion share repurchase program under which we can buy shares of our common stock. The Board of Directors has since authorized five separate $500.0 million increases to the size of the share repurchase program in the fourth quarter of 2017, second quarter of 2018, fourth quarter of 2018, fourth quarter of 2019, and fourth quarter of 2020 bringing the total program size to $3.5 billion.
As of September 30, 2021, share repurchases, excluding the redemption of OP units, executed under the program were as follows:

Period | Shares repurchased | Average price paid per share | Cumulative number of shares repurchased as part of the repurchase plan or programs |
Year ended 2017 | 8,105,881 | $104.61 | 8,105,881 |
Year ended 2018 | 9,468,617 | $99.03 | 17,574,498 |
Year ended 2019 | 4,465,857 | $86.06 | 22,040,355 |
Year Ended 2020 | 8,529,279 | $62.39 | 30,569,634 |
Nine months ended September 30, 2021 | 3,797,082 | $72.89 | 34,366,716 |

Perpetual Preferred Stock
We have 9,200,000 shares of our 6.50% Series I Cumulative Redeemable Preferred Stock, or the Series I Preferred Stock, outstanding with a mandatory liquidation preference of $25.00 per share. The Series I Preferred stockholders receive annual dividends of $1.625 per share paid on a quarterly basis and dividends are cumulative, subject to certain provisions. We are entitled to redeem the Series I Preferred Stock at any time, in whole or from time to time in part, at par for cash. In August 2012, we received $221.9 million in net proceeds from the issuance of the Series I Preferred Stock, which were recorded net of underwriters' discount and issuance costs, and contributed the net proceeds to the Operating Partnership in exchange for 9,200,000 units of 6.50% Series I Cumulative Redeemable Preferred Units of limited partnership interest, or the Series I Preferred Units.
Dividend Reinvestment and Stock Purchase Plan ("DRSPP")
In February 2021, the Company filed a registration statement with the SEC for our dividend reinvestment and stock purchase plan, or DRSPP, which automatically became effective upon filing. The Company registered 3,500,000 shares of our common stock under the DRSPP. The DRSPP commenced on September 24, 2001.
The following table summarizes SL Green common stock issued, and proceeds received from dividend reinvestments and/or stock purchases under the DRSPP for the three and nine months ended September 30, 2021 and 2020, respectively (dollars in thousands):

| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Shares of common stock issued | 2,004 |  |  | 4,086 |  |  | 9,038 |  |  | 9,604 |
Dividend reinvestments/stock purchases under the DRSPP | $ | 146 |  |  | $ | 202 |  |  | $ | 613 |  |  | $ | 566 |

Earnings per Share
We use the two-class method of computing earnings per share (“EPS”), which is an earnings allocation formula that determines EPS for common stock and any participating securities according to dividends declared (whether paid or unpaid). Under the two-class method, basic EPS is computed by dividing the income available to common stockholders by the weighted-average number of common stock shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur from share equivalent activity.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
SL Green's earnings per share for the three and nine months ended September 30, 2021 and 2020 are computed as follows (in thousands):

| Three Months Ended September 30, |  | Nine Months Ended September 30,
Numerator | 2021 |  | 2020 |  | 2021 |  | 2020
Basic Earnings: |  |  |  |  |  |  |
Net income attributable to SL Green common stockholders | $ | 388,205 |  |  | $ | 13,859 |  |  | $ | 486,073 |  |  | $ | 185,104 |
Less: distributed earnings allocated to participating securities | (363) |  |  | (333) |  |  | (1,090) |  |  | (777) |
Less: undistributed earnings allocated to participating securities | (1,942) |  |  | — |  |  | (1,736) |  |  | (141) |
Net income attributable to SL Green common stockholders (numerator for basic earnings per share) | $ | 385,900 |  |  | $ | 13,526 |  |  | $ | 483,247 |  |  | $ | 184,186 |
Add back: dilutive effect of earnings allocated to participating securities | 363 |  |  | 333 |  |  | 1,090 |  |  | 777 |
Add back: undistributed earnings allocated to participating securities | 1,942 |  |  | — |  |  | 1,736 |  |  | 141 |
Add back: effect of dilutive securities (redemption of units to common shares) | 22,683 |  |  | 802 |  |  | 28,489 |  |  | 10,073 |
Net income attributable to SL Green common stockholders (numerator for diluted earnings per share) | $ | 410,888 |  |  | $ | 14,661 |  |  | $ | 514,562 |  |  | $ | 195,177 |

| Three Months Ended September 30, |  | Nine Months Ended September 30,
Denominator | 2021 |  | 2020 |  | 2021 |  | 2020
Basic Shares: |  |  |  |  |  |  |
Weighted average common stock outstanding | 66,840 |  |  | 70,943 |  |  | 68,275 |  |  | 73,373 |
Effect of Dilutive Securities: |  |  |  |  |  |  |
Operating Partnership units redeemable for common shares | 3,834 |  |  | 4,029 |  |  | 4,024 |  |  | 4,123 |
Stock-based compensation plans | 813 |  |  | 442 |  |  | 684 |  |  | 441 |
Contingently issuable shares from special dividend declared December 4, 2020 and issued January 15, 2021 | — |  |  | — |  |  | 104 |  |  | — |
Diluted weighted average common stock outstanding | 71,487 |  |  | 75,414 |  |  | 73,087 |  |  | 77,937 |

The Company has excluded 969,631 and 1,032,243 common stock equivalents from the calculation of diluted shares outstanding for the three and nine months ended September 30, 2021, respectively, as they were anti-dilutive. The Company has excluded 2,071,169 and 1,728,767 common stock equivalents from the calculation of diluted shares outstanding for the three and nine months ended September 30, 2020, respectively, as they were anti-dilutive.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
13. Partners' Capital of the Operating Partnership
The Company is the sole managing general partner of the Operating Partnership and at September 30, 2021 owned 66,865,416 general and limited partnership interests in the Operating Partnership and 9,200,000 Series I Preferred Units. Partnership interests in the Operating Partnership are denominated as “common units of limited partnership interest” (also referred to as “OP Units”) or “preferred units of limited partnership interest” (also referred to as “Preferred Units”). All references to OP Units and Preferred Units outstanding exclude such units held by the Company. A holder of an OP Unit may present such OP Unit to the Operating Partnership for redemption at any time (subject to restrictions agreed upon at the issuance of OP Units to particular holders that may restrict such right for a period of time, generally one year from issuance). Upon presentation of an OP Unit for redemption, the Operating Partnership must redeem such OP Unit in exchange for the cash equal to the then value of a share of common stock of the Company, except that the Company may, at its election, in lieu of cash redemption, acquire such OP Unit for one share of common stock. Because the number of shares of common stock outstanding at all times equals the number of OP Units that the Company owns, one share of common stock is generally the economic equivalent of one OP Unit, and the quarterly distribution that may be paid to the holder of an OP Unit equals the quarterly dividend that may be paid to the holder of a share of common stock. Each series of Preferred Units makes a distribution that is set in accordance with an amendment to the partnership agreement of the Operating Partnership. Preferred Units may also be convertible into OP Units at the election of the holder thereof or the Company, subject to the terms of such Preferred Units.
Net income (loss) allocated to the preferred unitholders and common unitholders reflects their pro rata share of net income (loss) and distributions.
All unit-related references and measurements including the number of units outstanding and earnings per unit have been retroactively adjusted to reflect the reverse stock split effectuated by SL Green’s Board of Directors in January 2021 for all periods presented in this Quarterly Report on Form 10-Q.
Limited Partner Units
As of September 30, 2021, limited partners other than SL Green owned 5.50%, or 3,888,034 common units, of the Operating Partnership.
Preferred Units
Preferred units not owned by SL Green are further described in Note 11, “Noncontrolling Interests on the Company’s Consolidated Financial Statements - Preferred Units of Limited Partnership Interest in the Operating Partnership.”
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
Earnings per Unit
The Operating Partnership's earnings per unit for the three and nine months ended September 30, 2021 and 2020, respectively, are computed as follows (in thousands):

| Three Months Ended September 30, |  | Nine Months Ended September 30,
Numerator | 2021 |  | 2020 |  | 2021 |  | 2020
Basic Earnings: |  |  |  |  |  |  |
Net income attributable to SLGOP common unitholders | $ | 410,888 |  |  | $ | 14,661 |  |  | $ | 514,562 |  |  | $ | 195,177 |
Less: distributed earnings allocated to participating securities | (363) |  |  | (333) |  |  | (1,090) |  |  | (777) |
Less: undistributed earnings allocated to participating securities | (1,942) |  |  | — |  |  | (1,736) |  |  | (141) |
Net income attributable to SLGOP common unitholders (numerator for basic earnings per unit) | $ | 408,583 |  |  | $ | 14,328 |  |  | $ | 511,736 |  |  | $ | 194,259 |
Add back: dilutive effect of earnings allocated to participating securities | 363 |  |  | 333 |  |  | 1,090 |  |  | 777 |
Add back: undistributed earnings allocated to participating securities | 1,942 |  |  | — |  |  | 1,736 |  |  | 141 |
Net income attributable to SLGOP common unitholders (numerator for diluted earnings per unit) | $ | 410,888 |  |  | $ | 14,661 |  |  | $ | 514,562 |  |  | $ | 195,177 |

| Three Months Ended September 30, |  | Nine Months Ended September 30,
Denominator | 2021 |  | 2020 |  | 2021 |  | 2020
Basic units: |  |  |  |  |  |  |
Weighted average common units outstanding | 70,674 |  |  | 74,972 |  |  | 72,299 |  |  | 77,496 |
Effect of Dilutive Securities: |  |  |  |  |  |  |
Stock-based compensation plans | 813 |  |  | 442 |  |  | 684 |  |  | 441 |
Contingently issuable units from special distribution declared December 4, 2020 and issued January 15, 2021 | — |  |  | — |  |  | 104 |  |  | — |
Diluted weighted average common units outstanding | 71,487 |  |  | 75,414 |  |  | 73,087 |  |  | 77,937 |

The Operating Partnership has excluded 969,631 and 1,032,243 common unit equivalents from the diluted units outstanding for the three and nine months ended September 30, 2021, respectively, as they were anti-dilutive. The Operating Partnership has excluded 2,071,169 and 1,728,767 common unit equivalents from the diluted units outstanding for the three and nine months ended September 30, 2020, respectively, as they were anti-dilutive.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
14. Share-based Compensation
We have share-based employee and director compensation plans. Our employees are compensated through the Operating Partnership. Under each plan, whenever the Company issues common or preferred stock, the Operating Partnership issues an equivalent number of units of limited partnership interest of a corresponding class to the Company.
The Fourth Amended and Restated 2005 Stock Option and Incentive Plan, or the 2005 Plan, was approved by the Company's Board of Directors in April 2016 and its stockholders in June 2016 at the Company's annual meeting of stockholders. The 2005 Plan authorizes the issuance of stock options, stock appreciation rights, unrestricted and restricted stock, phantom shares, dividend equivalent rights, cash-based awards and other equity-based awards. Subject to adjustments upon certain corporate transactions or events, awards with respect to up to a maximum of 27,030,000 fungible units may be granted under the 2005 Plan. Currently, different types of awards count against the limit on the number of fungible units differently, with (1) full-value awards (i.e., those that deliver the full value of the award upon vesting, such as restricted stock) counting as 3.74 Fungible Units per share subject to such awards, (2) stock options, stock appreciation rights and other awards that do not deliver full value and expire five years from the date of grant counting as 0.73 fungible units per share subject to such awards, and (3) all other awards (e.g., 10-year stock options) counting as 1.0 fungible units per share subject to such awards. Awards granted under the 2005 Plan prior to the approval of the fourth amendment and restatement in June 2016 continue to count against the fungible unit limit based on the ratios that were in effect at the time such awards were granted, which may be different than the current ratios. As a result, depending on the types of awards issued, the 2005 Plan may result in the issuance of more or less than 27,030,000 shares. If a stock option or other award granted under the 2005 Plan expires or terminates, the common stock subject to any portion of the award that expires or terminates without having been exercised or paid, as the case may be, will again become available for the issuance of additional awards. Shares of our common stock distributed under the 2005 Plan may be treasury shares or authorized but unissued shares. Currently, unless the 2005 Plan has been previously terminated by the Company's Board of Directors, new awards may be granted under the 2005 Plan until June 2, 2026, which is the tenth anniversary of the date that the 2005 Plan was most recently approved by the Company's stockholders. As of September 30, 2021, 1.4 million fungible units were available for issuance under the 2005 Plan after reserving for shares underlying outstanding restricted stock units, phantom stock units granted pursuant to our Non-Employee Directors' Deferral Program and LTIP Units.
Stock Options and Class O LTIP Units
Options are granted with an exercise price at the fair market value of the Company's common stock on the date of grant and, subject to employment, generally expire five years or ten years from the date of grant, are not transferable other than on death, and generally vest in one year to five years commencing one year from the date of grant. We have also granted Class O LTIP Units, which are a class of LTIP Units in the Operating Partnership structured to provide economics similar to those of stock options. Class O LTIP Units, once vested, may be converted, at the election of the holder, into a number of common units of the Operating Partnership per Class O LTIP Unit determined by the increase in value of a share of the Company’s common stock at the time of conversion over a participation threshold, which equals the fair market value of a share of the Company’s common stock at the time of grant. Class O LTIP Units are entitled to distributions, subject to vesting, equal per unit to 10% of the per unit distributions paid with respect to the common units of the Operating Partnership. The fair value of each stock option or LTIP Unit granted is estimated on the date of grant using the Black-Scholes option pricing model based on historical information.
There were no options granted during the nine months ended September 30, 2021 or the year ended December 31, 2020.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
A summary of the status of the Company's stock options as of September 30, 2021 and December 31, 2020, and changes during the nine months ended September 30, 2021 and year ended December 31, 2020 are as follows:

| September 30, 2021 |  | December 31, 2020
| Options Outstanding |  | Weighted Average Exercise Price |  | Options Outstanding |  | Weighted Average Exercise Price
Balance at beginning of period | 784,995 |  |  | $ | 102.62 |  |  | 1,007,665 |  |  | $ | 105.35 |
Granted | — |  |  | — |  |  | — |  |  | — |
Exercised | — |  |  | — |  |  | — |  |  | — |
Lapsed or canceled | (68,015) |  |  | 100.95 |  |  | (222,670) |  |  | 114.97 |
Balance at end of period | 716,980 |  |  | $ | 102.77 |  |  | 784,995 |  |  | $ | 102.62 |
Options exercisable at end of period | 716,980 |  |  | $ | 102.77 |  |  | 782,022 |  |  | $ | 102.62 |

The remaining weighted average contractual life of the options outstanding was 1.6 years and the remaining average contractual life of the options exercisable was 1.6 years.
During the three and nine months ended September 30, 2021, we recognized no compensation expense related to options. During the three and nine months ended September 30, 2020, we recognized compensation expense related to options of $0.00 million and $0.03 million, respectively. As of September 30, 2021, there was no unrecognized compensation cost related to unvested stock options.
Restricted Shares
Shares are granted to certain employees, including our executives, and vesting occurs upon the completion of a service period or our meeting established financial performance criteria. Vesting occurs at rates ranging from 15% to 35% once performance criteria are reached.
A summary of the Company's restricted stock as of September 30, 2021 and December 31, 2020 and changes during the nine months ended September 30, 2021 and the year ended December 31, 2020, are as follows:

| September 30, 2021 |  | December 31, 2020
Balance at beginning of period | 3,439,674 |  |  | 3,465,347 |  |  |
Granted | 145,845 |  |  | 8,959 |  |  |
Canceled | (19,236) |  |  | (34,632) |  |  |
Balance at end of period | 3,566,283 |  |  | 3,439,674 |  |  |
Vested during the period | 126,515 |  |  | 128,891 |  |  |
Compensation expense recorded | $ | 6,339,292 |  |  | $ | 10,895,459 |  |  |
Total fair value of restricted stock granted during the period | $ | 9,214,531 |  |  | $ | 734,315 |  |  |

The fair value of restricted stock that vested during the nine months ended September 30, 2021 and the year ended December 31, 2020 was $11.3 million and $12.5 million, respectively. As of September 30, 2021, there was $9.1 million of total unrecognized compensation cost related to restricted stock, which is expected to be recognized over a weighted average period of 1.8 years.
We granted LTIP Units, which include bonus, time-based and performance-based awards, with a fair value of $45.1 million and $37.0 million as of September 30, 2021 and December 31, 2020, respectively. The grant date fair value of the LTIP Unit awards was calculated in accordance with ASC 718. A third party consultant determined that the fair value of the LTIP Units has a discount to our common stock price. The discount was calculated by considering the inherent uncertainty that the LTIP Units will reach parity with other common partnership units and the illiquidity due to transfer restrictions. As of September 30, 2021, there was $51.2 million of total unrecognized compensation expense related to the time-based and performance based awards, which is expected to be recognized over a weighted average period of 1.7 years.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
During the three and nine months ended September 30, 2021, we recorded compensation expense related to bonus, time-based and performance based awards of $9.1 million and $27.3 million, respectively. During the three and nine months ended September 30, 2020, we recorded compensation expense related to bonus, time-based and performance based awards of $6.4 million and $20.4 million, respectively.
For the three and nine months ended September 30, 2021, $0.5 million and $1.6 million, respectively, was capitalized to assets associated with compensation expense related to our long-term compensation plans, restricted stock and stock options. For the three and nine months ended September 30, 2020, $0.6 million and $1.7 million, respectively, was capitalized to assets associated with compensation expense related to our long-term compensation plans, restricted stock and stock options.
Deferred Compensation Plan for Directors
Under our Non-Employee Director's Deferral Program, which commenced July 2004, the Company's non-employee directors may elect to defer up to 100% of their annual retainer fee, chairman fees, meeting fees and annual stock grant. Unless otherwise elected by a participant, fees deferred under the program shall be credited in the form of phantom stock units. The program provides that a director's phantom stock units generally will be settled in an equal number of shares of common stock upon the earlier of (i) the January 1 coincident with or the next following such director's termination of service from the Board of Directors or (ii) a change in control by us, as defined by the program. Phantom stock units are credited to each non-employee director quarterly using the closing price of our common stock on the first business day of the respective quarter. Each participating non-employee director is also credited with dividend equivalents or phantom stock units based on the dividend rate for each quarter, which are either paid in cash currently or credited to the director’s account as additional phantom stock units.
During the nine months ended September 30, 2021, 22,413 phantom stock units and 12,226 shares of common stock were issued to our Board of Directors. We recorded compensation expense of $0.1 million and $2.2 million during the three and nine months ended September 30, 2021, respectively, related to the Deferred Compensation Plan. We recorded compensation expense of $0.2 million and $2.1 million during the three and nine months ended September 30, 2020, respectively, related to the Deferred Compensation Plan.
As of September 30, 2021, there were 163,189 phantom stock units outstanding pursuant to our Non-Employee Director's Deferral Program.
Employee Stock Purchase Plan
In 2007, the Company's Board of Directors adopted the 2008 Employee Stock Purchase Plan, or ESPP, to provide equity-based incentives to eligible employees. The ESPP is intended to qualify as an "employee stock purchase plan" under Section 423 of the Code, and has been adopted by the board to enable our eligible employees to purchase the Company's shares of common stock through payroll deductions. The ESPP became effective on January 1, 2008 with a maximum of 500,000 shares of the common stock available for issuance, subject to adjustment upon a merger, reorganization, stock split or other similar corporate change. The Company filed a registration statement on Form S-8 with the SEC with respect to the ESPP. The common stock is offered for purchase through a series of successive offering periods. Each offering period will be three months in duration and will begin on the first day of each calendar quarter, with the first offering period having commenced on January 1, 2008. The ESPP provides for eligible employees to purchase the common stock at a purchase price equal to 85% of the lesser of (1) the market value of the common stock on the first day of the offering period or (2) the market value of the common stock on the last day of the offering period. The ESPP was approved by our stockholders at our 2008 annual meeting of stockholders. As of September 30, 2021, 169,802 shares of our common stock had been issued under the ESPP.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
15. Accumulated Other Comprehensive Loss
The following tables set forth the changes in accumulated other comprehensive loss by component as of September 30, 2021 (in thousands):

| Net unrealized loss on derivative instruments (1) |  | SL Green’s share of joint venture net unrealized loss on derivative instruments (2) |  | Net unrealized gain on marketable securities |  | Total
Balance at December 31, 2020 | $ | (57,415) |  |  | $ | (10,853) |  |  | $ | 1,021 |  |  | $ | (67,247) |
Other comprehensive loss before reclassifications | 7,032 |  |  | (19,453) |  |  | 294 |  |  | (12,127) |
Amounts reclassified from accumulated other comprehensive loss | 12,619 |  |  | 6,158 |  |  | — |  |  | 18,777 |
Balance at September 30, 2021 | $ | (37,764) |  |  | $ | (24,148) |  |  | $ | 1,315 |  |  | $ | (60,597) |

(1)Amount reclassified from accumulated other comprehensive loss is included in interest expense in the respective consolidated statements of operations. As of September 30, 2021 and December 31, 2020, the deferred net gains from these terminated hedges, which is included in accumulated other comprehensive loss relating to net unrealized loss on derivative instruments, was $(0.6) million and $(0.5) million, respectively.
(2)Amount reclassified from accumulated other comprehensive loss is included in equity in net loss from unconsolidated joint ventures in the respective consolidated statements of operations.
16. Fair Value Measurements
We are required to disclose fair value information with regard to certain of our financial instruments, whether or not recognized in the consolidated balance sheets, for which it is practical to estimate fair value. The FASB guidance defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants on the measurement date. We measure and/or disclose the estimated fair value of certain financial assets and liabilities based on a hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity and the reporting entity’s own assumptions about market participant assumptions. This hierarchy consists of three broad levels: Level 1 - quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity can access at the measurement date; Level 2 - inputs other than quoted prices included within Level 1, that are observable for the asset or liability, either directly or indirectly; and Level 3 - unobservable inputs for the asset or liability that are used when little or no market data is available. We follow this hierarchy for our assets and liabilities measured at fair value on a recurring and nonrecurring basis. In instances in which the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level of input that is significant to the fair value measurement in its entirety. Our assessment of the significance of the particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
The following tables set forth the assets and liabilities that we measure at fair value on a recurring and non-recurring basis by their levels in the fair value hierarchy as of September 30, 2021 and December 31, 2020 (in thousands):

| September 30, 2021
| Total |  | Level 1 |  | Level 2 |  | Level 3
Assets: |  |  |  |  |  |  |
Marketable securities available-for-sale | $ | 24,355 |  |  | $ | — |  |  | $ | 24,355 |  |  | $ | — |
Interest rate cap and swap agreements (included in Other assets) | 97 |  |  | — |  |  | 97 |  |  | — |
Liabilities: |  |  |  |  |  |  |
Interest rate cap and swap agreements (included in Other liabilities) | $ | 40,737 |  |  | $ | — |  |  | $ | 40,737 |  |  | $ | — |

| December 31, 2020
| Total |  | Level 1 |  | Level 2 |  | Level 3
Assets: |  |  |  |  |  |  |
Marketable securities | $ | 28,570 |  |  | $ | — |  |  | $ | 28,570 |  |  | $ | — |
Interest rate cap and swap agreements (included in Other assets) | 28 |  |  | — |  |  | 28 |  |  | — |
Liabilities: |  |  |  |  |  |  |
Interest rate cap and swap agreements (included in Other liabilities) | $ | 61,217 |  |  | $ | — |  |  | $ | 61,217 |  |  | $ | — |

We evaluate real estate investments and debt and preferred equity investments, including intangibles, for potential impairment primarily utilizing cash flow projections that apply, among other things, estimated revenue and expense growth rates, discount rates and capitalization rates, as well as sales comparison approach, which utilizes comparable sales, listings and sales contracts, all of which are classified as Level 3 inputs.
In January 2021, pursuant to the partnership documents of our 885 Third Avenue investment, certain participating rights of the common member expired. As a result, it was determined that this investment is a VIE of which we are the primary beneficiary, and the investment was consolidated in our financial statements. Upon consolidating the entity, the assets and liabilities of the entity were recorded at fair value. This fair value was determined using a third party valuation which primarily utilized cash flow projections that apply, among other things, estimated revenue and expense growth rates, discount rates and capitalization rates, as well as sales comparison approach, which utilizes comparable sales, listings and sales contracts, all of which are classified as Level 3 inputs.
In July 2021, the Company sold a 49% interest in its 220 East 42nd Street investment, which resulted in the Company no longer retaining a controlling interest in the entity, as defined in ASC 810, and the deconsolidation of the 51.0% interest we retained. We recorded our investment at fair value which resulted in the recognition of a fair value adjustment of $206.8 million during the nine months ended September 30, 2021. The fair value of our investment was determined by the terms of the joint venture agreement.
In September 2021, the Company was the successful bidder at the foreclosure of 690 Madison Avenue, at which time the Company's outstanding principal and accrued interest balance were credited to our equity investment in the property as it previously served as collateral for a debt and preferred equity investment. We recorded the assets acquired and liabilities assumed at fair value. This fair value was determined using a third party valuation which primarily utilized cash flow projections that apply, among other things, estimated revenue and expense growth rates, discount rates and capitalization rates, as well as sales comparison approach, which utilizes comparable sales, listings and sales contracts, all of which are classified as Level 3 inputs.
Marketable securities classified as Level 1 are derived from quoted prices in active markets. The valuation technique used to measure the fair value of marketable securities classified as Level 2 were valued based on quoted market prices or model driven valuations using the significant inputs derived from or corroborated by observable market data. We do not intend to sell these securities and it is not more likely than not that we will be required to sell the investments before recovery of their amortized cost bases.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
The fair value of derivative instruments is based on current market data received from financial sources that trade such instruments and are based on prevailing market data and derived from third party proprietary models based on well-recognized financial principles and reasonable estimates about relevant future market conditions, which are classified as Level 2 inputs.
The financial assets and liabilities that are not measured at fair value on our consolidated balance sheets include cash and cash equivalents, restricted cash, accounts receivable, accounts payable and accrued expenses, debt and preferred equity investments, mortgages and other loans payable and other secured and unsecured debt. The carrying amount of cash and cash equivalents, restricted cash, accounts receivable, and accounts payable and accrued expenses reported in our consolidated balance sheets approximates fair value due to the short-term nature of these instruments. The fair value of debt and preferred equity investments, which is classified as Level 3, is estimated by discounting the future cash flows using current interest rates at which similar loans with the same maturities would be made to borrowers with similar credit ratings. The fair value of borrowings, which is classified as Level 3, is estimated by discounting the contractual cash flows of each debt instrument to their present value using adjusted market interest rates, which is provided by a third-party specialist.
The following table provides the carrying value and fair value of these financial instruments as of September 30, 2021 and December 31, 2020 (in thousands):

| September 30, 2021 |  | December 31, 2020
| Carrying Value (1) |  | Fair Value |  | Carrying Value (1) |  | Fair Value
Debt and preferred equity investments | $ | 1,052,110 |  |  | (2) |  | $ | 1,076,542 |  |  | (2)
Fixed rate debt | $ | 3,577,313 |  |  | $ | 3,650,924 |  |  | $ | 3,135,572 |  |  | $ | 3,237,075 |
Variable rate debt | 572,581 |  |  | 570,601 |  |  | 1,827,677 |  |  | 1,822,740 |
| $ | 4,149,894 |  |  | $ | 4,221,525 |  |  | $ | 4,963,249 |  |  | $ | 5,059,815 |

(1)Amounts exclude net deferred financing costs.
(2)As of September 30, 2021, debt and preferred equity investments had an estimated fair value ranging between $0.9 billion and $1.1 billion. As of December 31, 2020, debt and preferred equity investments had an estimated fair value ranging between $1.0 billion and $1.1 billion.
Disclosure about fair value of financial instruments was based on pertinent information available to us as of September 30, 2021 and December 31, 2020. Such amounts have not been comprehensively revalued for purposes of these financial statements since that date and current estimates of fair value may differ significantly from the amounts presented herein.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
17. Financial Instruments: Derivatives and Hedging
In the normal course of business, we use a variety of commonly used derivative instruments, such as interest rate swaps, caps, collars and floors, to manage, or hedge interest rate risk. We hedge our exposure to variability in future cash flows for forecasted transactions in addition to anticipated future interest payments on existing debt. We recognize all derivatives on the balance sheet at fair value. Derivatives that are not hedges are adjusted to fair value through earnings. If a derivative is a hedge, depending on the nature of the hedge, changes in the fair value of the derivative will either be offset against the change in fair value of the hedge asset, liability, or firm commitment through earnings, or recognized in other comprehensive income (loss) until the hedged item is recognized in earnings. Reported net income and equity may increase or decrease prospectively, depending on future levels of interest rates and other variables affecting the fair values of derivative instruments and hedged items, but will have no effect on cash flows. Currently, all of our designated derivative instruments are effective hedging instruments.
The following table summarizes the notional value at inception and fair value of our consolidated derivative financial instruments as of September 30, 2021 based on Level 2 information. The notional value is an indication of the extent of our involvement in these instruments at that time, but does not represent exposure to credit, interest rate or market risks (dollars in thousands).

| Notional Value |  | Strike Rate |  | Effective Date |  | Expiration Date |  | Balance Sheet Location |  | Fair Value
Interest Rate Cap | $ | 111,869 |  |  | 3.500 | % |  | December 2020 |  | November 2021 |  | Other Assets |  | $ | — |
Interest Rate Swap | 200,000 |  |  | 0.138 | % |  | February 2021 |  | February 2022 |  | Other Liabilities |  | (27) |
Interest Rate Swap | 100,000 |  |  | 0.136 | % |  | February 2021 |  | February 2022 |  | Other Liabilities |  | (13) |
Interest Rate Cap | 85,000 |  |  | 4.000 | % |  | March 2021 |  | March 2022 |  | Other Assets |  | — |
Interest Rate Swap | 100,000 |  |  | 0.212 | % |  | January 2021 |  | January 2023 |  | Other Assets |  | 11 |
Interest Rate Swap | 400,000 |  |  | 0.160 | % |  | February 2021 |  | February 2023 |  | Other Assets |  | 86 |
Interest Rate Swap | 200,000 |  |  | 1.131 | % |  | July 2016 |  | July 2023 |  | Other Liabilities |  | (3,108) |
Interest Rate Swap | 100,000 |  |  | 1.161 | % |  | July 2016 |  | July 2023 |  | Other Liabilities |  | (1,609) |
Interest Rate Swap | 150,000 |  |  | 2.696 | % |  | January 2019 |  | January 2024 |  | Other Liabilities |  | (7,840) |
Interest Rate Swap | 150,000 |  |  | 2.721 | % |  | January 2019 |  | January 2026 |  | Other Liabilities |  | (11,990) |
Interest Rate Swap | 200,000 |  |  | 2.740 | % |  | January 2019 |  | January 2026 |  | Other Liabilities |  | (16,150) |
|  |  |  |  |  |  |  |  |  |  | $ | (40,640) |

No gains or losses on the changes in the fair values were included in interest expense in the consolidated statements of operations during the three and nine months ended September 30, 2021 or 2020.
The Company has agreements with each of its derivative counterparties that contain a provision where if the Company defaults on any of its indebtedness, then the Company could also be declared in default on its derivative obligations. As of September 30, 2021, the fair value of derivatives in a net liability position, including accrued interest but excluding any adjustment for nonperformance risk related to these agreements was $41.9 million. As of September 30, 2021, the Company was not required to post any collateral related to these agreements and was not in breach of any agreement provisions. If the Company had breached any of these provisions, it could have been required to settle its obligations under the agreements at their aggregate termination value of $42.4 million as of September 30, 2021.
Gains and losses on terminated hedges are included in accumulated other comprehensive income (loss), and are recognized into earnings over the term of the related mortgage obligation. Over time, the realized and unrealized gains and losses held in accumulated other comprehensive loss will be reclassified into earnings as an adjustment to interest expense in the same periods in which the hedged interest payments affect earnings. We estimate that $16.3 million of the current balance held in accumulated other comprehensive loss will be reclassified int interest expense and $4.1 million of the portion related to our share of joint venture accumulated other comprehensive loss will be reclassified into equity in net loss from unconsolidated joint ventures within the next 12 months.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
The following table presents the effect of our derivative financial instruments and our share of our joint ventures' derivative financial instruments that are designated and qualify as hedging instruments on the consolidated statements of operations for the three months ended September 30, 2021 and 2020, respectively (in thousands):

|  | Amount of Loss Recognized in Other Comprehensive Loss |  | Location of Loss Reclassified from Accumulated Other Comprehensive Loss into Income |  | Amount of Loss Reclassified from Accumulated Other Comprehensive Loss into Income
|  | Three Months Ended September 30, |  |  | Three Months Ended September 30,
Derivative |  | 2021 |  | 2020 |  |  |  |  | 2021 |  | 2020 |  |
Interest Rate Swaps/Caps |  | $ | (450) |  |  | $ | (318) |  |  |  |  | Interest expense |  | $ | (4,416) |  |  | $ | (5,162) |  |  |
Share of unconsolidated joint ventures' derivative instruments |  | (143) |  |  | (199) |  |  |  |  | Equity in net loss from unconsolidated joint ventures |  | (2,792) |  |  | (1,454) |  |  |
|  | $ | (593) |  |  | $ | (517) |  |  |  |  |  |  | $ | (7,208) |  |  | $ | (6,616) |  |  |

The following table presents the effect of our derivative financial instruments and our share of our joint ventures' derivative financial instruments that are designated and qualify as hedging instruments on the consolidated statements of operations for the nine months ended September 30, 2021 and 2020, respectively (in thousands):

|  | Amount of Gain (Loss) Recognized in Other Comprehensive Loss |  | Location of Loss Reclassified from Accumulated Other Comprehensive Loss into Income |  | Amount of Loss Reclassified from Accumulated Other Comprehensive Loss into Income
|  | Nine Months Ended September 30, |  |  | Nine Months Ended September 30,
Derivative |  | 2021 |  | 2020 |  |  |  |  | 2021 |  | 2020 |  |
Interest Rate Swaps/Caps |  | $ | 7,305 |  |  | $ | (52,808) |  |  |  |  | Interest expense |  | $ | (13,359) |  |  | $ | (9,610) |  |  |
Share of unconsolidated joint ventures' derivative instruments |  | (20,641) |  |  | (8,375) |  |  |  |  | Equity in net loss from unconsolidated joint ventures |  | (6,542) |  |  | (3,347) |  |  |
|  | $ | (13,336) |  |  | $ | (61,183) |  |  |  |  |  |  | $ | (19,901) |  |  | $ | (12,957) |  |  |

The following table summarizes the notional value at inception and fair value of our joint ventures' derivative financial instruments as of September 30, 2021 based on Level 2 information. The notional value is an indication of the extent of our involvement in these instruments at that time, but does not represent exposure to credit, interest rate or market risks (dollars in thousands).

| Notional Value |  | Strike Rate |  | Effective Date |  | Expiration Date |  | Classification |  | Fair Value
Interest Rate Cap | $ | 1,075,000 |  |  | 2.850 | % |  | September 2021 |  | September 2022 |  | Asset |  | $ | 2 |
Interest Rate Cap | 125,000 |  |  | 2.850 | % |  | September 2021 |  | September 2022 |  | Asset |  | — |
Interest Rate Cap | 1,250,000 |  |  | 1.250 | % |  | November 2020 |  | October 2024 |  | Asset |  | 5,005 |
Interest Rate Swap | 177,000 |  |  | 1.669 | % |  | March 2016 |  | February 2026 |  | Liability |  | (6,190) |
|  |  |  |  |  |  |  |  |  |  | $ | (1,183) |

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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
18. Lease Income
The Operating Partnership is the lessor and the sublessor to tenants under operating and sales-type leases. The minimum rental amounts due under the leases are generally subject to scheduled fixed increases or adjustments. The leases generally also require that the tenants reimburse us for increases in certain operating costs and real estate taxes above their base year costs.
The components of lease income from operating leases during the three and nine months ended September 30, 2021 and 2020 were as follows (in thousands):

|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2021 |  | 2020 |  | 2021 |  | 2020
Fixed lease payments |  | $ | 142,979 |  |  | $ | 171,866 |  |  | $ | 473,466 |  |  | $ | 538,601 |
Variable lease payments |  | 12,660 |  |  | 21,979 |  |  | 58,634 |  |  | 70,892 |
Total lease payments (1) |  | $ | 155,639 |  |  | $ | 193,845 |  |  | $ | 532,100 |  |  | $ | 609,493 |
Amortization of acquired above and below-market leases |  | (276) |  |  | 1,670 |  |  | (4,037) |  |  | 4,539 |
Total rental revenue |  | $ | 155,363 |  |  | $ | 195,515 |  |  | $ | 528,063 |  |  | $ | 614,032 |

(1)Amounts include $52.0 million and $175.5 million of sublease income during the three and nine months ended September 30, 2021 and $59.8 million and $180.2 million of sublease income for the three and nine months ended September 30, 2020, respectively.
The components of lease income from sales-type leases during the three and nine months ended September 30, 2021 and 2020 were as follows (in thousands):

|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2021 |  | 2020 |  | 2021 |  | 2020
Loss recognized at commencement, net (1) |  | $ | — |  |  | $ | (5,973) |  |  | $ | — |  |  | $ | (5,973) |
Interest income (2) |  | 1,108 |  |  | 484 |  |  | 3,313 |  |  | 484 |
Total gain (loss) recognized on sales-type leases |  | $ | 1,108 |  |  | $ | (5,489) |  |  | $ | 3,313 |  |  | $ | (5,489) |

(1)These amounts are included in gain on sale of real estate, net and depreciable real estate reserves and impairment in our consolidated statements of operations.
(2)These amounts are included in other income in our consolidated statements of operations.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
19. Commitments and Contingencies
Legal Proceedings
As of September 30, 2021, the Company and the Operating Partnership were not involved in any material litigation nor, to management's knowledge, was any material litigation threatened against us or our portfolio which if adversely determined could have a material adverse impact on us.
In September 2021, the Company acquired the fee position in 1591-1597 Broadway. A third party has asserted ownership rights to the fee, which the Company is contesting. See Note 3, "Property Acquisitions."
On October 31, 2021, HNA, through an affiliated entity, filed for Chapter 11 bankruptcy protection on account of its investment in 245 Park Avenue, together with another asset in Chicago. The Company will be contesting the filing, on the basis that the filing was done in bad faith and in violation of HNA's agreements with the Company. See Note 5, "Debt and Preferred Equity Investments."
Environmental Matters
Our management believes that the properties are in compliance in all material respects with applicable federal, state and local ordinances and regulations regarding environmental issues. Management is not aware of any environmental liability that it believes would have a materially adverse impact on our financial position, results of operations or cash flows. Management is unaware of any instances in which it would incur significant environmental cost if any of our properties were sold.
Lease Arrangements
We are a tenant under leases for certain properties, including ground leases. These leases have expirations from 2022 to 2119, or 2043 to 2119 as fully extended. Certain leases offer extension options which we assess against relevant economic factors to determine whether we are reasonably certain of exercising or not exercising the option. Lease payments associated with renewal periods that we are reasonably certain will be exercised, if any, are included in the measurement of the corresponding lease liability and right of use asset.
Certain of our leases are subject to rent resets, generally based on a percentage of the then fair market value, a fixed amount, or a percentage of the preceding rent at specified future dates. Rent resets will be recognized in the periods in which they are incurred.
The table below summarizes our current lease arrangements as of September 30, 2021:

Property (1) |  | Year of Current Expiration |  | Year of Final Expiration (2)
1185 Avenue of the Americas |  | 2043 |  | 2043
SL Green Headquarters at One Vanderbilt (3) |  | 2043 |  | 2048
625 Madison Avenue |  | 2022 |  | 2054
420 Lexington Avenue |  | 2050 |  | 2080
885 Third Avenue |  | 2080 |  | 2080
711 Third Avenue (4) |  | 2033 |  | 2083
1080 Amsterdam Avenue (5) |  | 2111 |  | 2111
15 Beekman (6)(7) |  | 2119 |  | 2119

(1)All leases are classified as operating leases unless otherwise specified.
(2)Reflects exercise of all available extension options.
(3)In March 2021, the Company commenced its lease for its corporate headquarters at One Vanderbilt. See note 10, "Related Party Transactions."
(4)The Company owns 50% of the fee interest.
(5)A portion of the lease is classified as a financing lease.
(6)The Company has an option to purchase the ground lease for a fixed price on a specific date. The lease is classified as a financing lease.
(7)In August 2020, the Company entered into a long-term sublease with an unconsolidated joint venture as part of the capitalization of the 15 Beekman development project. See Note 6, "Investments in Unconsolidated Joint Ventures."
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
The following is a schedule of future minimum lease payments as evaluated in accordance with ASC 842 for our financing leases and operating leases with initial terms in excess of one year as of September 30, 2021 (in thousands):

| Financing leases |  | Operating leases
Remaining 2021 | $ | 871 |  |  | $ | 7,324 |
2022 | 3,522 |  |  | 29,386 |
2023 | 3,570 |  |  | 29,502 |
2024 | 3,641 |  |  | 30,545 |
2025 | 3,810 |  |  | 30,772 |
2026 | 3,858 |  |  | 30,911 |
Thereafter | 256,692 |  |  | 631,532 |
Total minimum lease payments | $ | 275,964 |  |  | $ | 789,972 |
Amount representing interest | (150,796) |  |  | — |
Amount discounted using incremental borrowing rate | — |  |  | (352,615) |
Lease liabilities | $ | 125,168 |  |  | $ | 437,357 |

The following table provides lease cost information for the Company's operating leases for the three and nine months ended September 30, 2021 and 2020 (in thousands):

|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
Operating Lease Costs |  | 2021 |  | 2020 |  | 2021 |  | 2020
Operating lease costs before capitalized operating lease costs |  | $ | 7,567 |  |  | $ | 7,751 |  |  | $ | 22,702 |  |  | $ | 24,486 |
Operating lease costs capitalized |  | (1,010) |  |  | (778) |  |  | (2,699) |  |  | (2,315) |
Operating lease costs, net (1) |  | $ | 6,557 |  |  | $ | 6,973 |  |  | $ | 20,003 |  |  | $ | 22,171 |

(1)This amount is included in operating lease rent in our consolidated statements of operations.
The following table provides lease cost information for the Company's financing leases for the three and nine months ended September 30, 2021 and 2020 (in thousands):

|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
Financing Lease Costs |  | 2021 |  | 2020 |  | 2021 |  | 2020
Interest on financing leases before capitalized interest |  | $ | 1,229 |  |  | $ | 2,198 |  |  | $ | 4,215 |  |  | $ | 6,010 |
Interest on financing leases capitalized |  | — |  |  | (588) |  |  | — |  |  | (2,378) |
Interest on financing leases, net (1) |  | 1,229 |  |  | 1,610 |  |  | 4,215 |  |  | 3,632 |
Amortization of right-of-use assets (2) |  | 180 |  |  | 304 |  |  | 540 |  |  | 914 |
Financing lease costs, net |  | $ | 1,409 |  |  | $ | 1,914 |  |  | $ | 4,755 |  |  | $ | 4,546 |

(1)These amounts are included in interest expense, net of interest income in our consolidated statements of operations.
(2)These amounts are included in depreciation and amortization in our consolidated statements of operations.
As of September 30, 2021, the weighted-average discount rate used to calculate the lease liabilities was 4.59%. As of September 30, 2021, the weighted-average remaining lease term was 28 years, inclusive of purchase options expected to be exercised.
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SL Green Realty Corp. and SL Green Operating Partnership, L.P.
Notes to Consolidated Financial Statements (cont.)
September 30, 2021
(unaudited)
20. Segment Information
The Company has two reportable segments, real estate and debt and preferred equity investments. We evaluate real estate performance and allocate resources based on earnings contributions.
The primary sources of revenue are generated from tenant rents, escalations and reimbursement revenue. Real estate property operating expenses consist primarily of security, maintenance, utility costs, insurance, real estate taxes and ground rent expense (at certain applicable properties). See Note 5, "Debt and Preferred Equity Investments," for additional details on our debt and preferred equity investments.
Selected consolidated results of operations for the three and nine months ended September 30, 2021 and 2020, and selected asset information as of September 30, 2021 and December 31, 2020, regarding our operating segments are as follows (in thousands):

|  | Real Estate Segment |  | Debt and Preferred Equity Segment |  | Total Company
Total revenues |  |  |  |  |  |
Three months ended: |  |  |  |  |  |
September 30, 2021 |  | $ | 185,129 |  |  | $ | 20,072 |  |  | $ | 205,201 |
September 30, 2020 |  | 226,856 |  |  | 22,988 |  |  | 249,844 |
Nine months ended: |  |  |  |  |  |
September 30, 2021 |  | $ | 589,958 |  |  | $ | 59,452 |  |  | $ | 649,410 |
September 30, 2020 |  | 716,382 |  |  | 101,464 |  |  | 817,846 |
Net income |  |  |  |  |  |
Three months ended: |  |  |  |  |  |
September 30, 2021 |  | $ | 398,377 |  |  | $ | 17,157 |  |  | $ | 415,534 |
September 30, 2020 |  | 10,097 |  |  | 10,580 |  |  | 20,677 |
Nine months ended: |  |  |  |  |  |
September 30, 2021 |  | $ | 478,589 |  |  | $ | 50,224 |  |  | $ | 528,813 |
September 30, 2020 |  | 161,388 |  |  | 53,030 |  |  | 214,418 |
Total assets |  |  |  |  |  |
As of: |  |  |  |  |  |
September 30, 2021 |  | $ | 9,761,694 |  |  | $ | 1,094,165 |  |  | $ | 10,855,859 |
December 31, 2020 |  | 10,579,899 |  |  | 1,127,668 |  |  | 11,707,567 |

Interest costs for the debt and preferred equity segment include actual costs incurred for borrowings on the 2017 MRA and the FHLB Facility. Interest is imputed on the investments that do not collateralize the 2017 MRA and the FHLB Facility using our weighted average corporate borrowing cost. We also allocate loan loss reserves, net of recoveries, and transaction related costs to the debt and preferred equity segment. We do not allocate marketing, general and administrative expenses to the debt and preferred equity segment because the use of personnel and resources is dependent on transaction volume between the two segments and varies between periods. In addition, we base performance on the individual segments prior to allocating marketing, general and administrative expenses. For the three and nine months ended September 30, 2021, marketing, general and administrative expenses totaled $23.5 million and $68.4 million, respectively. For the three and nine months ended September 30, 2020, marketing, general and administrative expenses totaled $23.6 million and $66.7 million, respectively. All other expenses, except interest, relate entirely to the real estate assets.
There were no transactions between the above two segments.
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ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
Overview
SL Green Realty Corp., which is referred to as SL Green or the Company, a Maryland corporation, and SL Green Operating Partnership, L.P., which is referred to as SLGOP or the Operating Partnership, a Delaware limited partnership, were formed in June 1997 for the purpose of combining the commercial real estate business of S.L. Green Properties, Inc. and its affiliated partnerships and entities. The Company is a self-managed real estate investment trust, or REIT, engaged in the acquisition, development, ownership, management and operation of commercial and residential real estate properties, principally office properties, located in the New York metropolitan area. Unless the context requires otherwise, all references to "we," "our" and "us" means the Company and all entities owned or controlled by the Company, including the Operating Partnership.
The following discussion related to our consolidated financial statements should be read in conjunction with the financial statements appearing in this Quarterly Report on this Form 10-Q and in Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2020.
As of September 30, 2021, we owned the following interests in properties in the New York metropolitan area, primarily in midtown Manhattan. Our investments located outside of Manhattan are referred to as the Suburban properties:

|  |  |  | Consolidated |  | Unconsolidated |  | Total |  |
Location |  | Property Type |  | Number of Buildings |  | Approximate Square Feet (unaudited) |  | Number of Buildings |  | Approximate Square Feet (unaudited) |  | Number of Buildings |  | Approximate Square Feet (unaudited) |  | Weighted Average Occupancy(1) (unaudited)
Commercial: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Manhattan |  | Office |  | 14 |  |  | 8,499,045 |  |  | 10 |  |  | 12,004,183 |  |  | 24 |  |  | 20,503,228 |  |  | 92.5 | %
|  | Retail |  | 2 |  |  | 17,888 |  |  | 9 |  |  | 301,996 |  |  | 11 |  |  | 319,884 |  |  | 94.8 | %
|  | Development/Redevelopment | (1) | 8 |  |  | 2,538,284 |  |  | 3 |  |  | 3,275,508 |  |  | 11 |  |  | 5,813,792 |  |  | N/A
|  | Fee Interest |  | 1 |  |  | 7,684 |  |  | — |  |  | — |  |  | 1 |  |  | 7,684 |  |  | N/A
|  |  |  | 25 |  |  | 11,062,901 |  |  | 22 |  |  | 15,581,687 |  |  | 47 |  |  | 26,644,588 |  |  | 92.5 | %
Suburban |  | Office |  | 7 |  |  | 862,800 |  |  | — |  |  | — |  |  | 7 |  |  | 862,800 |  |  | 80.5 | %
Total commercial properties |  | 32 |  |  | 11,925,701 |  |  | 22 |  |  | 15,581,687 |  |  | 54 |  |  | 27,507,388 |  |  | 92.0 | %
Residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Manhattan |  | Residential |  | 1 |  |  | 82,250 |  |  | 6 |  |  | 445,934 |  |  | 7 |  |  | 528,184 |  |  | 95.6 | %
Total portfolio |  | 33 |  |  | 12,007,951 |  |  | 28 |  |  | 16,027,621 |  |  | 61 |  |  | 28,035,572 |  |  | 92.1 | %

(1)The weighted average occupancy for commercial properties represents the total occupied square footage divided by the total square footage at acquisition. The weighted average occupancy for residential properties represents the total occupied units divided by the total available units. Properties under construction are not included in the calculation of weighted average occupancy.
As of September 30, 2021, we also managed two office buildings owned by third parties encompassing approximately 2.1 million square feet (unaudited), and held debt and preferred equity investments with a book value of $1.1 billion, excluding approximately $0.1 billion of debt and preferred equity investments and other financing receivables that are included in other balance sheet line items other than the Debt and preferred equity investments line item.
Critical Accounting Policies
Refer to the 2020 Annual Report on Form 10-K of the Company and the Operating Partnership for a discussion of our critical accounting policies, which include investment in commercial real estate properties, investment in unconsolidated joint ventures, lease classification, revenue recognition, and debt and preferred equity investments. During the three and nine months ended September 30, 2021, there were no material changes to these policies.
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Results of Operations
The COVID-19 pandemic has caused, and continues to cause, severe disruptions with wide ranging impacts to the global economy and everyday life. Our business, results of operations, liquidity, cash flows, prospects, and our ability to achieve forward-looking targets and expectations could be materially and adversely affected. This could also cause significant volatility in the trading prices of our securities. The extent of the impact of the COVID-19 pandemic will depend on future developments, including the duration, severity and spread of the pandemic, health and safety actions taken to contain its spread including vaccination efforts, the impact of new variants, and how quickly and to what extent normal economic and operating conditions can resume. Additionally, the COVID-19 pandemic could increase the magnitude of many of the other risks described in our latest Annual Report on Form 10-K and our other SEC filings and may have other adverse effects on our operations that we are not currently able to predict.
Comparison of the three months ended September 30, 2021 to the three months ended September 30, 2020
The following comparison for the three months ended September 30, 2021, or 2021, to the three months ended September 30, 2020, or 2020, makes reference to the effect of the following:
i.“Same-Store Properties,” which represents all operating properties owned by us at January 1, 2020 and still owned by us in the same manner as of September 30, 2021 (Same-Store Properties totaled 22 of our 33 consolidated operating buildings),
ii.“Acquisition Properties,” which represents all properties or interests in properties acquired in 2021 and 2020 and all non-Same-Store Properties, including properties that are under development or redevelopment,
iii."Disposed Properties," which represents all properties or interests in properties sold in 2021 and 2020, and
iv.“Other,” which represents properties where we sold an interest resulting in deconsolidation and corporate level items not allocable to specific properties, as well as the Service Corporation and eEmerge Inc.

|  | Same-Store |  | Disposed |  | Other |  | Consolidated
(in millions) |  | 2021 |  | 2020 |  | $ Change |  | % Change |  | 2021 |  | 2020 |  | 2021 |  | 2020 |  | 2021 |  | 2020 |  | $ Change |  | % Change
Rental revenue |  | $ | 133.7 |  |  | $ | 145.5 |  |  | $ | (11.8) |  |  | (8.1) | % |  | $ | 3.9 |  |  | $ | 28.1 |  |  | $ | 17.8 |  |  | $ | 21.9 |  |  | $ | 155.4 |  |  | $ | 195.5 |  |  | $ | (40.1) |  |  | (20.5) | %
Investment income |  | — |  |  | — |  |  | — |  |  | — | % |  | — |  |  | — |  |  | 20.1 |  |  | 23.0 |  |  | 20.1 |  |  | 23.0 |  |  | (2.9) |  |  | (12.6) | %
Other income |  | 2.1 |  |  | 0.4 |  |  | 1.7 |  |  | 425.0 | % |  | — |  |  | 20.8 |  |  | 27.7 |  |  | 10.1 |  |  | 29.8 |  |  | 31.3 |  |  | (1.5) |  |  | (4.8) | %
Total revenues |  | 135.8 |  |  | 145.9 |  |  | (10.1) |  |  | (6.9) | % |  | 3.9 |  |  | 48.9 |  |  | 65.6 |  |  | 55.0 |  |  | 205.3 |  |  | 249.8 |  |  | (44.5) |  |  | (17.8) | %
Property operating expenses |  | 66.2 |  |  | 71.0 |  |  | (4.8) |  |  | (6.8) | % |  | 1.6 |  |  | 10.8 |  |  | 11.6 |  |  | 14.6 |  |  | 79.4 |  |  | 96.4 |  |  | (17.0) |  |  | (17.6) | %
Transaction related costs |  | — |  |  | — |  |  | — |  |  | — | % |  | — |  |  | — |  |  | 0.2 |  |  | — |  |  | 0.2 |  |  | — |  |  | 0.2 |  |  | 100.0 | %
Marketing, general and administrative |  | — |  |  | — |  |  | — |  |  | — | % |  | — |  |  | — |  |  | 23.5 |  |  | 23.6 |  |  | 23.5 |  |  | 23.6 |  |  | (0.1) |  |  | (0.4) | %
|  | 66.2 |  |  | 71.0 |  |  | (4.8) |  |  | (6.8) | % |  | 1.6 |  |  | 10.8 |  |  | 35.3 |  |  | 38.2 |  |  | 103.1 |  |  | 120.0 |  |  | (16.9) |  |  | (14.1) | %
Other income (expenses): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense and amortization of deferred financing costs, net of interest income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (17.2) |  |  | (26.7) |  |  | 9.5 |  |  | (35.6) | %
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (49.3) |  |  | (92.5) |  |  | 43.2 |  |  | (46.7) | %
Equity in net loss from unconsolidated joint ventures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (15.5) |  |  | (0.4) |  |  | (15.1) |  |  | 3,775.0 | %
Equity in net loss on sale of interest in unconsolidated joint venture/real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1.3) |  |  | — |  |  | (1.3) |  |  | 100.0 | %
Purchase price and other fair value adjustments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 208.8 |  |  | — |  |  | 208.8 |  |  | 100.0 | %
Gain on sale of real estate, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 187.8 |  |  | 26.1 |  |  | 161.7 |  |  | 619.5 | %
Depreciable real estate reserves and impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | — |  |  | (6.6) |  |  | 6.6 |  |  | (100.0) | %
Loan loss and other investment reserves, net of recoveries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | — |  |  | (9.0) |  |  | 9.0 |  |  | (100.0) | %
Net income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 415.5 |  |  | $ | 20.7 |  |  | $ | 394.8 |  |  | 1,907.2 | %

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Rental Revenue
Rental revenues decreased primarily due to our Disposed Properties ($24.2 million), properties moved into redevelopment ($9.9 million), and a lower contribution from our Same-Store properties ($11.9 million) driven by increased vacancy at 1185 Avenue of the Americas ($7.9 million) and 485 Lexington Avenue ($1.5 million). This was partially offset by increased revenue at 609 Fifth Avenue ($4.3 million) and the addition of 885 Third Avenue to the consolidated portfolio in the first quarter of 2021 ($2.9 million).
The following table presents a summary of the commenced leasing activity for the three months ended September 30, 2021 in our Manhattan portfolio:

| Usable SF |  | Rentable SF |  | New Cash Rent (per rentable SF) (1) |  | Prev. Escalated Rent (per rentable SF) (2) |  | TI/LC per rentable SF |  | Free Rent (in months) |  | Average Lease Term (in years)
Manhattan |  |  |  |  |  |  |  |  |  |  |  |  |
Space available at beginning of the period | 1,484,703 |  |  |  |  |  |  |  |  |  |  |  |  |
Properties in redevelopment | (96,090) |  |  |  |  |  |  |  |  |  |  |  |  |
Space which became available during the period (3) |  |  |  |  |  |  |  |  |  |  |  |  |
• Office | 267,332 |  |  |  |  |  |  |  |  |  |  |  |  |
• Retail | 9,830 |  |  |  |  |  |  |  |  |  |  |  |  |
• Storage | 4,487 |  |  |  |  |  |  |  |  |  |  |  |  |
| 281,649 |  |  |  |  |  |  |  |  |  |  |  |  |
Total space available | 1,670,262 |  |  |  |  |  |  |  |  |  |  |  |  |
Leased space commenced during the period: |  |  |  |  |  |  |  |  |  |  |  |  |
• Office(4) | 107,535 |  |  | 124,684 |  |  | $ | 62.82 |  |  | $ | 61.87 |  |  | $ | 15.47 |  |  | 4.5 |  |  | 5.6 |
• Retail | 1,277 |  |  | 1,277 |  |  | $ | 65.78 |  |  | $ | 86.54 |  |  | $ | — |  |  | — |  |  | 3.0 |
• Storage | 4,358 |  |  | 4,774 |  |  | $ | 23.54 |  |  | $ | 31.55 |  |  | $ | — |  |  | 1.0 |  |  | 4.2 |
Total leased space commenced | 113,170 |  |  | 130,735 |  |  | $ | 61.42 |  |  | $ | 61.22 |  |  | $ | 14.76 |  |  | 4.3 |  |  | 5.5 |
Total available space at end of period | 1,557,092 |  |  |  |  |  |  |  |  |  |  |  |  |
Early renewals |  |  |  |  |  |  |  |  |  |  |  |  |
• Office | 62,160 |  |  | 69,429 |  |  | $ | 67.68 |  |  | $ | 73.30 |  |  | $ | 15.47 |  |  | 3.7 |  |  | 4.9 |
• Retail | 11,396 |  |  | 10,812 |  |  | $ | 86.65 |  |  | $ | 85.94 |  |  | $ | — |  |  | 0.8 |  |  | 2.4 |
Total early renewals | 73,556 |  |  | 80,241 |  |  | $ | 70.24 |  |  | $ | 75.00 |  |  | $ | 13.38 |  |  | 3.3 |  |  | 4.6 |
Total commenced leases, including replaced previous vacancy |  |  |  |  |  |  |  |  |  |  |  |  |
• Office |  |  | 194,113 |  |  | $ | 64.56 |  |  | $ | 67.18 |  |  | $ | 15.47 |  |  | 4.2 |  |  | 5.4
• Retail |  |  | 12,089 |  |  | $ | 84.45 |  |  | $ | 86.00 |  |  | $ | — |  |  | 0.7 |  |  | 2.5
• Storage |  |  | 4,774 |  |  | $ | 23.54 |  |  | $ | 31.55 |  |  | $ | — |  |  | 1.0 |  |  | 4.2 |
Total commenced leases |  |  | 210,976 |  |  | $ | 64.77 |  |  | $ | 67.95 |  |  | $ | 14.24 |  |  | 3.9 |  |  | 5.2 |

(1)Annual initial base rent.
(2)Escalated rent includes base rent plus all additional amounts paid by the tenant in the form of real estate taxes, operating expenses, porters wage or a consumer price index (CPI) adjustment.
(3)Includes expiring space, relocating tenants and move-outs where tenants vacated. Excludes lease expirations where tenants held over.
(4)Average starting office rent excluding new tenants replacing vacancies was $62.54 per rentable square feet for 79,992 rentable square feet. Average starting office rent for office space (leased and early renewals, excluding new tenants replacing vacancies) was $64.93 per rentable square feet for 149,421 rentable square feet.
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Investment Income
For the three months ended September 30, 2021, investment income decreased primarily as a result of a decrease in the weighted average balance of our debt and preferred equity investments. For the three months ended September 30, 2021, the weighted average debt and preferred equity investment balance outstanding and weighted average yield were $1.1 billion and 7.3%, respectively, as compared to $1.2 billion and 7.0%, respectively, for the three months ended September 30, 2020.
Other Income
Other income decreased primarily due to income, net of legal costs, derived from a legal settlement during the three months ended September 30, 2020 ($20.2 million), offset by an increase in lease termination income from 609 Fifth Avenue ($11.4 million) and an increase in leasing and management fee income during the three months ended September 30, 2021 ($11.9 million) as compared to the same period in 2020 ($4.8 million).
Property Operating Expenses
Property operating expenses decreased primarily due to reduced variable expenses and real estate taxes at our Disposed Properties ($4.6 million and $4.2 million, respectively), including the deconsolidation of 220 East 42nd Street ($4.4 million) as a result of the interest sale during the third quarter of 2021. Further decreases resulted from reduced real estate taxes at our Same-Store and Acquisition Properties ($4.8 million and $2.7 million, respectively).
Marketing, General and Administrative Expenses
Marketing, general and administrative expenses decreased to $23.5 million for the three months ended September 30, 2021, compared to $23.6 million for the same period in 2020.
Interest Expense and Amortization of Deferred Financing Costs, Net of Interest Income
Interest expense and amortization of deferred financing costs, net of interest income, decreased primarily due to interest capitalization in connection with properties that are under development ($3.3 million), the deconsolidation of 220 East 42nd Street ($2.6 million), a decrease in interest expense for the 2017 revolving credit facility ($1.8 million) and term loans ($0.4 million) resulting from a decrease in the average LIBOR rate during the three months ended September 30, 2021 as compared to the three months ended September 30, 2020, and lower interest expense from repayments of $350.0 million of senior unsecured notes in the third quarter of 2021 ($0.8 million). The weighted average consolidated debt balance outstanding was $4.3 billion for the three months ended September 30, 2021, compared to $5.6 billion for the three months ended September 30, 2020. The consolidated weighted average interest rate was 3.06% for the three months ended September 30, 2021, as compared to 2.91% for the three months ended September 30, 2020.
Depreciation and Amortization
Depreciation and amortization decreased primarily due to accelerated depreciation at One Madison Avenue in the third quarter of 2020 related to the property's redevelopment ($34.5 million) and decreased depreciation and amortization at our Disposed Properties ($7.0 million) and Same-Store Properties ($1.8 million).
Equity in net loss from unconsolidated joint ventures
Equity in net loss from unconsolidated joint ventures increased primarily as a result of higher depreciation expense at One Vanderbilt Avenue ($14.8 million), which was put in service during the fourth quarter of 2020.
Equity in net loss on sale of interest in unconsolidated joint venture/real estate x
During the three months ended September 30, 2021, we recognized a loss on sale related to the sale of our interest in 400 East 57th Street ($1.0 million). During the three months ended September 30, 2020, we did not sell any joint venture interests.
Purchase price and other fair value adjustments
During the three months ended September 30, 2021, we recorded a $206.8 million fair value adjustment related to our the 51.0% interest we retained in 220 East 42nd Street, which was deconsolidated when a 49% joint venture interest was sold. During the three months ended September 30, 2020, we did not record any purchase price and other fair value adjustments.
Gain on sale of real estate, net
During the three months ended September 30, 2021, we recognized gains from the sales of a 49% joint venture interest in 220 East 42nd Street ($175.1 million) and the retained interest in 410 Tenth Avenue from when the property was sold in the fourth quarter of 2020 ($12.6 million). During the three months ended September 30, 2020, we recognized gains on sales related to 15 Beekman ($17.7 million) and 400 East 58th Street ($8.3 million).
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Depreciable real estate reserves and impairment
During the three months ended September 30, 2021, we did not recognize any depreciable real estate reserves and impairment. During the three months ended September 30, 2020, we recognized depreciable real estate reserves and impairment related to 712 Madison Avenue ($6.6 million).
Loan loss and other investment reserves, net of recoveries
During the three months ended September 30, 2021 we did not recognize any loan loss and other investment reserves. During the three months ended September 30, 2020, we recorded $9.0 million of losses related to certain Debt and Preferred Equity investments that were sold.
Comparison of the nine months ended September 30, 2021 to the nine months ended September 30, 2020
The following comparison for the nine months ended September 30, 2021, or 2021, to the nine months ended September 30, 2020, or 2020, makes reference to the effect of the following:
i.“Same-Store Properties,” which represents all operating properties owned by us at January 1, 2020 and still owned by us in the same manner as of September 30, 2021 (Same-Store Properties totale d 22 of our 33 consolidated operating properties),
ii.“Acquisition Properties,” which represents all properties or interests in properties acquired in 2021 and 2020 and all non-Same-Store Properties, including properties that are under development, redevelopment or were deconsolidated during the period,
iii."Disposed Properties," which represents all properties or interests in properties sold or partially sold in 2021 and 2020, and
iv.“Other,” which represents properties that were partially sold resulting in deconsolidation and corporate level items not allocable to specific properties, as well as the Service Corporation and eEmerge Inc.

|  | Same-Store |  | Disposed |  | Other |  | Consolidated
(in millions) |  | 2021 |  | 2020 |  | $ Change |  | % Change |  | 2021 |  | 2020 |  | 2021 |  | 2020 |  | 2021 |  | 2020 |  | $ Change |  | % Change
Rental revenue |  | $ | 410.3 |  |  | $ | 434.0 |  |  | $ | (23.7) |  |  | (5.5) | % |  | $ | 51.0 |  |  | $ | 100.3 |  |  | $ | 66.8 |  |  | $ | 79.7 |  |  | $ | 528.1 |  |  | $ | 614.0 |  |  | $ | (85.9) |  |  | (14.0) | %
Investment income |  | — |  |  | — |  |  | — |  |  | — | % |  | — |  |  | — |  |  | 59.5 |  |  | 101.5 |  |  | 59.5 |  |  | 101.5 |  |  | (42.0) |  |  | (41.4) | %
Other income |  | 3.4 |  |  | 11.5 |  |  | (8.1) |  |  | (70.4) | % |  | 2.2 |  |  | 20.8 |  |  | 56.3 |  |  | 70.1 |  |  | 61.9 |  |  | 102.4 |  |  | (40.5) |  |  | (39.6) | %
Total revenues |  | 413.7 |  |  | 445.5 |  |  | (31.8) |  |  | (7.1) | % |  | 53.2 |  |  | 121.1 |  |  | 182.6 |  |  | 251.3 |  |  | 649.5 |  |  | 817.9 |  |  | (168.4) |  |  | (20.6) | %
Property operating expenses |  | 201.8 |  |  | 210.4 |  |  | (8.6) |  |  | (4.1) | % |  | 16.9 |  |  | 37.0 |  |  | 49.6 |  |  | 47.4 |  |  | 268.3 |  |  | 294.8 |  |  | (26.5) |  |  | (9.0) | %
Transaction related costs |  | — |  |  | — |  |  | — |  |  | — | % |  | — |  |  | — |  |  | 0.2 |  |  | 0.5 |  |  | 0.2 |  |  | 0.5 |  |  | (0.3) |  |  | (60.0) | %
Marketing, general and administrative |  | — |  |  | — |  |  | — |  |  | — | % |  | — |  |  | — |  |  | 68.4 |  |  | 66.7 |  |  | 68.4 |  |  | 66.7 |  |  | 1.7 |  |  | 2.5 | %
|  | 201.8 |  |  | 210.4 |  |  | (8.6) |  |  | (4.1) | % |  | 16.9 |  |  | 37.0 |  |  | 118.2 |  |  | 114.6 |  |  | 336.9 |  |  | 362.0 |  |  | (25.1) |  |  | (6.9) | %
Other income (expenses): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense and amortization of deferred financing costs, net of interest income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (66.7) |  |  | (99.4) |  |  | 32.7 |  |  | (32.9) | %
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (169.5) |  |  | (256.7) |  |  | 87.2 |  |  | (34.0) | %
Equity in net loss from unconsolidated joint ventures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (31.3) |  |  | (15.4) |  |  | (15.9) |  |  | 103.2 | %
Equity in net loss on sale of interest in unconsolidated joint venture/real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (5.4) |  |  | — |  |  | (5.4) |  |  | 100.0 | %
Purchase price and other fair value adjustments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 209.5 |  |  | — |  |  | 209.5 |  |  | 100.0 | %
Gain on sale of real estate, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 285.3 |  |  | 163.6 |  |  | 121.7 |  |  | 74 | %
Depreciable real estate reserves and impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (5.7) |  |  | (6.6) |  |  | 0.9 |  |  | (13.6) | %
Loan loss and other investment reserves, net of recoveries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | — |  |  | (27.0) |  |  | 27.0 |  |  | (100.0) | %
Net income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 528.8 |  |  | $ | 214.4 |  |  | $ | 314.4 |  |  | 146.6 | %

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Rental Revenue
Rental revenue decreased primarily due to our Disposed Properties ($49.4 million), properties moved into redevelopment ($32.2 million), and a lower contribution from our Same-Store Properties ($23.7 million) driven by increased vacancy at 1185 Avenue of the Americas ($14.7 million), 485 Lexington Avenue ($4.9 million), and 420 Lexington Avenue ($2.9 million). This was partially offset by the addition of 885 Third Avenue to the consolidated portfolio in the first quarter of 2021 ($23.1 million).
The following table presents a summary of the commenced leasing activity for the nine months ended September 30, 2021 in our Manhattan and Suburban portfolio:

| Usable SF |  | Rentable SF |  | New Cash Rent (per rentable SF) (1) |  | Prev. Escalated Rent (per rentable SF) (2) |  | TI/LC per rentable SF |  | Free Rent (in months) |  | Average Lease Term (in years)
Manhattan |  |  |  |  |  |  |  |  |  |  |  |  |
Space available at beginning of the period | 1,717,735 |  |  |  |  |  |  |  |  |  |  |  |  |
Sold Vacancies | (28,174) |  |  |  |  |  |  |  |  |  |  |  |  |
Property in redevelopment | (353,879) |  |  |  |  |  |  |  |  |  |  |  |  |
Space which became available during the period (3) |  |  |  |  |  |  |  |  |  |  |  |  |
• Office | 793,312 |  |  |  |  |  |  |  |  |  |  |  |  |
• Retail | 56,022 |  |  |  |  |  |  |  |  |  |  |  |  |
• Storage | 4,487 |  |  |  |  |  |  |  |  |  |  |  |  |
| 853,821 |  |  |  |  |  |  |  |  |  |  |  |  |
Total space available | 2,189,503 |  |  |  |  |  |  |  |  |  |  |  |  |
Leased space commenced during the period: |  |  |  |  |  |  |  |  |  |  |  |  |
• Office(4) | 574,596 |  |  | 622,773 |  |  | $ | 67.75 |  |  | $ | 65.29 |  |  | $ | 68.43 |  |  | 7.0 |  |  | 9.1 |
• Retail | 52,834 |  |  | 54,186 |  |  | $ | 50.36 |  |  | $ | 78.82 |  |  | $ | 8.58 |  |  | 1.6 |  |  | 10.7 |
• Storage | 4,981 |  |  | 5,397 |  |  | $ | 25.44 |  |  | $ | 31.55 |  |  | $ | — |  |  | 1.5 |  |  | 4.9 |
Total leased space commenced | 632,411 |  |  | 682,356 |  |  | $ | 66.04 |  |  | $ | 66.67 |  |  | $ | 63.13 |  |  | 6.5 |  |  | 9.2 |
Total available space at end of period | 1,557,092 |  |  |  |  |  |  |  |  |  |  |  |  |
Early renewals |  |  |  |  |  |  |  |  |  |  |  |  |
• Office | 307,333 |  |  | 325,410 |  |  | $ | 68.57 |  |  | $ | 70.04 |  |  | $ | 3.60 |  |  | 1.8 |  |  | 2.4 |
• Retail | 50,409 |  |  | 77,042 |  |  | $ | 96.21 |  |  | $ | 86.21 |  |  | $ | — |  |  | 0.6 |  |  | 4.4 |
• Storage | 2,248 |  |  | 2,262 |  |  | $ | 28.09 |  |  | $ | 28.09 |  |  | $ | — |  |  | 0.5 |  |  | 1.4 |
Total early renewals | 359,990 |  |  | 404,714 |  |  | $ | 73.60 |  |  | $ | 72.88 |  |  | $ | 2.90 |  |  | 1.6 |  |  | 2.8 |
Total commenced leases, including replaced previous vacancy |  |  |  |  |  |  |  |  |  |  |  |  |
• Office |  |  | 948,183 |  |  | $ | 68.03 |  |  | $ | 67.70 |  |  | $ | 46.18 |  |  | 5.2 |  |  | 6.8 |
• Retail |  |  | 131,228 |  |  | $ | 77.28 |  |  | $ | 83.52 |  |  | $ | 3.54 |  |  | 1.0 |  |  | 7.0 |
• Storage |  |  | 7,659 |  |  | $ | 26.22 |  |  | $ | 30.02 |  |  | $ | — |  |  | 1.2 |  |  | 3.9 |
Total commenced leases |  |  | 1,087,070 |  |  | $ | 68.85 |  |  | $ | 69.94 |  |  | $ | 40.71 |  |  | 4.7 |  |  | 6.8 |

(1)Annual initial base rent.
(2)Escalated rent includes base rent plus all additional amounts paid by the tenant in the form of real estate taxes, operating expenses, porters wage or a consumer price index (CPI) adjustment.
(3)Includes expiring space, relocating tenants and move-outs where tenants vacated. Excludes lease expirations where tenants held over.
(4)Average starting office rent excluding new tenants replacing vacancies was $61.38 per rentable square feet for 315,977 rentable square feet. Average starting office rent for office space (leased and early renewals, excluding new tenants replacing vacancies) was $65.03 per rentable square feet for 641,387 rentable square feet.
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Investment Income
For the nine months ended September 30, 2021, investment income decreased primarily as a result of a decrease in the weighted average balance and weighted average yield of our debt and preferred equity investments. For the nine months ended September 30, 2021, the weighted average debt and preferred equity investment balance outstanding and weighted average yield were $1.1 billion and 7.1%, respectively, as compared to $1.5 billion and 7.9%, respectively, for the nine months ended September 30, 2020.
Other Income
Other income decreased primarily due to lower lease termination income for the nine months ended September 30, 2021 ($21.3 million) as compared to the same period in 2020 ($49.4 million) and income, net of legal costs, derived from a legal settlement during the three months ended September 30, 2020 ($20.2 million), partially offset by an increase in leasing and management fee income for the nine months ended September 30, 2021 ($10.6 million).
Property Operating Expenses
Property operating expenses decreased primarily due to reduced variable expenses and real estate taxes at our Disposed Properties ($9.4 million and $9.6 million, respectively) and Same-Store Properties ($5.3 million and $2.0 million, respectively).
Marketing, General and Administrative Expenses
Marketing, general and administrative expenses increased to $68.4 million for the nine months ended September 30, 2021, compared to $66.7 million for the same period in 2020 due to an increase in stock-based compensation expense as a result of a higher stock price.
Interest Expense and Amortization of Deferred Financing Costs, Net of Interest Income
Interest expense and amortization of deferred financing costs, net of interest income, decreased primarily due to interest capitalization in connection with properties that are under development ($11.7 million) and lower interest expense from the 2017 revolving credit facility ($8.4 million), senior unsecured notes ($7.0 million) and term loans ($5.4 million) resulting from a decrease in the average LIBOR rate during the nine months ended September 30, 2021 as compared to the nine months ended September 30, 2020. The weighted average consolidated debt balance outstanding was $5.0 billion for the nine months ended September 30, 2021, compared to $6.0 billion for the nine months ended September 30, 2020. The consolidated weighted average interest rate was 2.91% for the nine months ended September 30, 2021, as compared to 3.11% for the nine months ended September 30, 2020.
Depreciation and Amortization
Depreciation and amortization decreased primarily due to accelerated depreciation at One Madison Avenue related to the redevelopment of the property ($70.2 million) during the nine months ended September 30, 2020 and decreased depreciation and amortization at our Same-Store and Disposed Properties ($11.0 million and $13.5 million, respectively).
Equity in net loss from unconsolidated joint ventures
Equity in net loss from unconsolidated joint ventures increased primarily as a result of higher depreciation expense at One Vanderbilt Avenue ($25.7 million), which was put in service in the fourth quarter of 2020, partially offset by an increase in income from operations at 2 Herald Square ($7.3 million).
Equity in net loss on sale of interest in unconsolidated joint venture/real estate
During the nine months ended September 30, 2021, we recognized losses on the sales of our interest in 55 West 46th Street ($15.3 million) and 400 East 57th Street ($1.0 million), offset by a gain on the sale of our interest in 605 West 42nd Street ($8.3 million). During the nine months ended September 30, 2020, we did not sell any joint venture interests or properties.
Purchase price and other fair value adjustments
During the nine months ended September 30, 2021, we recorded a $206.8 million fair value adjustment related to the 51.0% interest we retained in 220 East 42nd Street, which was deconsolidated when a 49% joint venture interest was sold. During the nine months ended September 30, 2020, we did not record any purchase price and other fair value adjustments.
Gain on sale of real estate, net
During the nine months ended September 30, 2021, we recognized gains from the sale of 635-641 Sixth Avenue ($99.3 million), 410 Tenth Avenue ($11.6 million), and the sale of a 49% joint venture interest in 220 East 42nd Street ($175.1 million). During the nine months ended September 30, 2020, we recognized gains from the sales of 315 West 33rd
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Street ($72.3 million), the retail condominium at 609 Fifth Avenue ($65.4 million), 15 Beekman ($17.7 million) and 400 East 58th Street ($8.3 million).
Depreciable real estate reserves and impairment
During the nine months ended September 30, 2021, we recognized depreciable real estate reserves and impairment related to 400 East 57th Street ($5.7 million). During the nine months ended September 30, 2020, we recognized depreciable real estate reserves and impairment related to 712 Madison Avenue ($6.6 million).
Loan loss and other investment reserves, net of recoveries
During the nine months ended September 30, 2021 we did not record any loan losses. During the nine months ended September 30, 2020 we recorded $12.3 million of losses related to certain debt and preferred equity investments that were sold and $14.7 million of loan loss and other investment reserves in conjunction with recording debt and preferred equity investments and other financing receivables at the net amount expected to be collected.
Liquidity and Capital Resources
We currently expect that our principal sources of funds to meet our short-term and long-term liquidity requirements for working capital, acquisitions, development or redevelopment of properties, tenant improvements, leasing costs, share repurchases, dividends to shareholders, distributions to unitholders, repurchases or repayments of outstanding indebtedness and for debt and preferred equity investments will include:
(1)Cash flow from operations;
(2)Cash on hand;
(3)Net proceeds from divestitures of properties and redemptions, participations, dispositions and repayments of debt and preferred equity investments;
(4)Borrowings under the revolving credit facility;
(5)Other forms of secured or unsecured financing; and
(6)Proceeds from common or preferred equity or debt offerings by the Company or the Operating Partnership (including issuances of units of limited partnership interest in the Operating Partnership and Trust preferred securities).
Cash flow from operations is primarily dependent upon the collectability of rent, the occupancy level of our portfolio, the net effective rental rates achieved on our leases, the collectability of rent, operating escalations and recoveries from our tenants and the level of operating and other costs. Additionally, we believe that our debt and preferred equity investment program will continue to serve as a source of operating cash flow.
The combined aggregate principal maturities of our property mortgages and other loans payable, Master Repurchase Agreement ("MRA"), corporate obligations and our share of joint venture debt, including as-of-right extension options, as of September 30, 2021 were as follows (in thousands):

| Remaining 2021 |  | 2022 |  | 2023 |  | 2024 |  | 2025 |  | Thereafter |  | Total
Property mortgages and other loans | $ | 192,443 |  |  | $ | 259,420 |  |  | $ | 56,583 |  |  | $ | 338,018 |  |  | $ | 812 |  |  | $ | 581,458 |  |  | $ | 1,428,734 |
MRA | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Corporate obligations | — |  |  | 800,000 |  |  | 1,520,000 |  |  | 200,000 |  |  | 100,000 |  |  | 100,000 |  |  | 2,720,000 |
Joint venture debt-our share | 209,672 |  |  | 227,056 |  |  | 750,696 |  |  | 623,047 |  |  | 1,436,027 |  |  | 2,543,144 |  |  | 5,789,642 |
Total | $ | 402,115 |  |  | $ | 1,286,476 |  |  | $ | 2,327,279 |  |  | $ | 1,161,065 |  |  | $ | 1,536,839 |  |  | $ | 3,224,602 |  |  | $ | 9,938,376 |

As of September 30, 2021, we had liquidity of $1.6 billion, comprised of $1.3 billion of availability under our revolving credit facility and $0.3 billion of consolidated cash on hand, inclusive of $34.4 million of marketable securities. This liquidity excludes $118.1 million representing our share of cash at unconsolidated joint venture properties. We may seek to divest of properties, interests in properties or debt and preferred equity investments or access private and public debt and equity capital when the opportunity presents itself, although there is no guarantee that this capital will be made available to us at efficient levels or at all. Management believes that these sources of liquidity, if we are able to access them, along with potential refinancing opportunities for secured and unsecured debt, will allow us to satisfy our debt obligations, as described above, upon maturity, if not before.
We have investments in several real estate joint ventures with various partners who we consider to be financially stable and who have the ability to fund a capital call when needed. Most of our joint ventures are financed with non-recourse debt. We believe that property level cash flows along with unfunded committed indebtedness and proceeds from the refinancing of outstanding secured indebtedness will be sufficient to fund the capital needs of our joint venture properties.
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Cash Flows
The following summary discussion of our cash flows is based on our consolidated statements of cash flows in "Item 1. Financial Statements" and is not meant to be an all-inclusive discussion of the changes in our cash flows for the periods presented below.
Cash, restricted cash, and cash equivalents were $345.9 million and $304.4 million as of September 30, 2021 and 2020, respectively, representing an increase of $41.5 million. The increase was a result of the following changes in cash flows (in thousands):

| Nine Months Ended September 30,
| 2021 |  | 2020 |  | Change
Net cash provided by operating activities | $ | 191,012 |  |  | $ | 327,943 |  |  | $ | (136,931) |
Net cash provided by investing activities | 886,877 |  |  | 375,023 |  |  | 511,854 |
Net cash used in financing activities | (1,104,751) |  |  | (639,947) |  |  | (464,804) |

Our principal sources of operating cash flow are the properties in our consolidated and joint venture portfolios and our debt and preferred equity portfolio. These sources generate a relatively consistent stream of cash flow that provides us with resources to pay operating expenses, debt service and fund dividend and distribution requirements.
Cash is used in investing activities to fund acquisitions, development or redevelopment projects and recurring and nonrecurring capital expenditures. We selectively invest in new projects that enable us to take advantage of our development, leasing, financing and property management skills and invest in existing buildings that meet our investment criteria. During the nine months ended September 30, 2021, when compared to the nine months ended September 30, 2020, we used cash primarily for the following investing activities (in thousands):

Acquisitions of real estate | $ | (65,945) |
Capital expenditures and capitalized interest | 73,271 |
Joint venture investments | (36,747) |
Distributions from joint ventures | 645,697 |
Proceeds from sales of real estate/partial interest in property | 208,231 |
Cash assumed from consolidation of real estate investment | 9,475 |
Debt and preferred equity and other investments | (322,128) |
Increase in net cash provided by investing activities | $ | 511,854 |

Funds spent on capital expenditures, which are comprised of building and tenant improvements, decreased from $281.7 million for the nine months ended September 30, 2020 to $208.4 million for the nine months ended September 30, 2021 due to decreased spending on development and redevelopment projects.
We generally fund our investment activity through the sale of real estate, the sale of debt and preferred equity investments, property-level financing, our credit facilities, senior unsecured notes, and construction loans. From time to time, the Company may issue common or preferred stock, or the Operating Partnership may issue common or preferred units of limited partnership interest.
During the nine months ended September 30, 2021, when compared to the nine months ended September 30, 2020, we used cash for the following financing activities (in thousands):

Proceeds from our debt obligations | $ | (1,447,556) |
Repayments of our debt obligations | 748,052 |
Net distribution to noncontrolling interests | (7,396) |
Other financing activities | 41,009 |
Proceeds from stock options exercised and DRSPP issuance | 47 |
Repurchase of common stock | 101,369 |
Redemption of preferred stock | 79,119 |
Acquisition of subsidiary interest from noncontrolling interest | 1,536 |
Dividends and distributions paid | 19,016 |
Decrease in net cash provided by financing activities | $ | (464,804) |

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Capitalization
Our authorized capital stock consists of 260,000,000 shares, $0.01 par value per share, consisting of 160,000,000 shares of common stock, $0.01 par value per share, 75,000,000 shares of excess stock, at $0.01 par value per share, and 25,000,000 shares of preferred stock, $0.01 par value per share. As of September 30, 2021, 66,865,416 shares of common stock and no shares of excess stock were issued and outstanding.
On December 4, 2020, our Board of Directors declared an ordinary dividend and a special dividend (together, "the Total Dividend"). The Total Dividend was paid on January 15, 2021 to shareholders of record at the close of business on December 15, 2020 ("the Record Date"). Shareholders had the opportunity to elect to receive the Total Dividend in the form of all cash or all stock, subject to proration if either option was oversubscribed. Shareholders who elected to receive cash received, for each share of common stock they owned as of the Record Date, approximately $0.3735 in cash and 0.0279 shares of common stock. Shareholders who elected to receive shares received, for each share of common stock they owned as of the Record Date, approximately 0.0343 shares of common stock. The number of shares issued was calculated based on the volume weighted average trading price of SLG's common stock between January 5-7, 2021, of $58.15 per share.
To mitigate the dilutive impact of the common stock issued in the special dividend, the Board of Directors also authorized a reverse stock split, which was effective after markets closed on January 20, 2021. On January 8, 2021, a committee of the Board of Directors calculated the ratio for the reverse stock split of our issued and outstanding shares of common stock as 1.02918-for-1. After the issuance of the dividend and the completion of the reverse stock split, the number of shares of our common stock outstanding was equivalent to the number of total shares outstanding on the Record Date (not including any issuances or repurchases that occurred following the Record Date, as well as any fractional shares that would have been issued but for which cash-in-lieu was paid). However, on a relative basis, some individual shareholders may have more shares of SLG’s common stock, and some individual shareholders may have fewer shares of our common stock, depending on their individual elections to receive cash or stock and as a result of the cash option being oversubscribed.
All share-related references and measurements including the number of shares outstanding, share prices, number of shares repurchased, earnings per share, dividends per share, and share-based compensation awards, have been retroactively adjusted to reflect the reverse stock split for all periods presented in this Quarterly Report on Form 10-Q.
Share Repurchase Program
In August 2016, our Board of Directors approved a $1.0 billion share repurchase program under which we can buy shares of our common stock. The Board of Directors has since authorized five separate $500.0 million increases to the size of the share repurchase program in the fourth quarter of 2017, second quarter of 2018, fourth quarter of 2018, fourth quarter of 2019, and fourth quarter of 2020 bringing the total program size to $3.5 billion.
As of September 30, 2021, share repurchases, excluding the redemption of OP units, executed under the program were as follows:

Period | Shares repurchased | Average price paid per share | Cumulative number of shares repurchased as part of the repurchase plan or programs
Year ended 2017 | 8,105,881 | $104.61 | 8,105,881
Year ended 2018 | 9,468,617 | $99.03 | 17,574,498
Year ended 2019 | 4,465,857 | $86.06 | 22,040,355
Year Ended 2020 | 8,529,279 | $62.39 | 30,569,634
Nine months ended September 30, 2021 | 3,797,082 | $72.89 | 34,366,716

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Dividend Reinvestment and Stock Purchase Plan ("DRSPP")
The following table summarizes SL Green common stock issued, and proceeds received from dividend reinvestments and/or stock purchases under the DRSPP for the three and nine months ended September 30, 2021 and 2020, respectively (dollars in thousands):

| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Shares of common stock issued | 2,004 |  |  | 4,086 |  |  | 9,038 |  |  | 9,604 |
Dividend reinvestments/stock purchases under the DRSPP | $ | 146 |  |  | $ | 202 |  |  | $ | 613 |  |  | $ | 566 |

Fourth Amended and Restated 2005 Stock Option and Incentive Plan
The Fourth Amended and Restated 2005 Stock Option and Incentive Plan, or the 2005 Plan, was approved by the Company's Board of Directors in April 2016 and its stockholders in June 2016 at the Company's annual meeting of stockholders. Subject to adjustments upon certain corporate transactions or events, awards with respect to up to a maximum of 27,030,000 fungible units may be granted as options, restricted stock, phantom shares, dividend equivalent rights and other equity-based awards under the 2005 Plan. As of September 30, 2021, 1.4 million fungible units were available for issuance under the 2005 Plan after reserving for shares underlying outstanding restricted stock units, phantom stock units granted pursuant to our Non-Employee Directors' Deferral Program and LTIP Units.
Deferred Compensation Plan for Directors
During the nine months ended September 30, 2021, 22,413 phantom stock units and 12,226 shares of common stock were issued to our Board of Directors. We recorded compensation expense of $0.1 million and $2.2 million during the three and nine months ended September 30, 2021, respectively, related to the Deferred Compensation Plan. We recorded compensation expense of $0.2 million and $2.1 million during the three and nine months ended September 30, 2020, respectively, related to the Deferred Compensation Plan.
As of September 30, 2021, there were 163,189 phantom stock units outstanding pursuant to our Non-Employee Director's Deferral Program.
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Indebtedness
The table below summarizes our consolidated mortgages and other loans payable, 2017 credit facility, senior unsecured notes and trust preferred securities outstanding as of September 30, 2021 and December 31, 2020, (amounts in thousands).

Debt Summary: | September 30, 2021 |  | December 31, 2020
Balance |  |  |
Fixed rate | $ | 1,977,313 |  |  | $ | 1,985,572 |
Variable rate—hedged | 1,600,000 |  |  | 1,150,000 |
Total fixed rate | 3,577,313 |  |  | 3,135,572 |
Total variable rate | 572,581 |  |  | 1,827,677 |
Total debt | $ | 4,149,894 |  |  | $ | 4,963,249 |
Debt, preferred equity, and other investments subject to variable rate | 281,494 |  |  | 345,877 |
Net exposure to variable rate debt | $ | 291,087 |  |  | $ | 1,481,800 |
Percent of Total Debt: |  |  |
Fixed rate | 86.2 | % |  | 63.2 | %
Variable rate (1) | 13.8 | % |  | 36.8 | %
Total | 100.0 | % |  | 100.0 | %
Effective Interest Rate for the Year: |  |  |
Fixed rate | 3.10 | % |  | 3.65 | %
Variable rate | 2.18 | % |  | 2.30 | %
Effective interest rate | 3.06 | % |  | 2.91 | %

(1) Inclusive of the mitigating effect of our debt, preferred equity, and other investments subject to variable rate, the percent of total debt of our net exposure to variable rate debt was 7.5% and 32.1% as of September 30, 2021 and December 31, 2020, respectively.
The variable rate debt shown above generally bears interest at an interest rate based on 30-day LIBOR (0.08% and 0.14% as of September 30, 2021 and December 31, 2020, respectively). Our consolidated debt as of September 30, 2021 had a weighted average term to maturity of 2.40 years.
Certain of our debt and equity investments and other investments, with carrying values of $0.3 billion as of September 30, 2021 and $0.3 billion at December 31, 2020, are variable rate investments which mitigate our exposure to interest rate changes on our unhedged variable rate debt. Inclusive of the mitigating effect of these investments, the net percent of our variable rate debt to total debt was 7.5% and 32.1%, respectively.
2017 Credit Facility
In November 2017, we entered into an amendment to the credit facility, referred to as the 2017 credit facility, that was originally entered into by the Company in November 2012, or the 2012 credit facility. As of September 30, 2021, the 2017 credit facility consisted of a $1.5 billion revolving credit facility, a $1.3 billion term loan (or "Term Loan A"), and a $200.0 million term loan (or "Term Loan B") with maturity dates of March 31, 2022, March 31, 2023, and November 21, 2024, respectively. The revolving credit facility has two six-month as-of-right extension options to March 31, 2023. We also have an option, subject to customary conditions, to increase the capacity of the credit facility to $4.5 billion at any time prior to the maturity dates for the revolving credit facility and term loans without the consent of existing lenders, by obtaining additional commitments from our existing lenders and other financial institutions.
As of September 30, 2021, the 2017 credit facility bore interest at a spread over 30-day LIBOR ranging from (i) 82.5 basis points to 155 basis points for loans under the revolving credit facility, (ii) 90 basis points to 175 basis points for loans under Term Loan A, and (iii) 85 basis points to 165 basis points for loans under Term Loan B, in each case based on the credit rating assigned to the senior unsecured long term indebtedness of the Company. In instances where there are either only two ratings available or where there are more than two and the difference between them is one rating category, the applicable rating shall be the highest rating. In instances where there are more than two ratings and the difference between the highest and the lowest is two or more rating categories, then the applicable rating used is the average of the highest two, rounded down if the average is not a recognized category.
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As of September 30, 2021, the applicable spread was 100 basis points for the revolving credit facility, 110 basis points for Term Loan A, and 100 basis points for Term Loan B. We are required to pay quarterly in arrears a 12.5 to 30 basis point facility fee on the total commitments under the revolving credit facility based on the credit rating assigned to the senior unsecured long term indebtedness of the Company. As of September 30, 2021, the facility fee was 20 basis points.
As of September 30, 2021, we had $2.0 million of outstanding letters of credit, $220.0 million drawn under the revolving credit facility and $1.5 billion outstanding under the term loan facilities, with total undrawn capacity of $1.3 billion under the revolving credit facility. As of September 30, 2021 and December 31, 2020, the revolving credit facility had a carrying value of $216.9 million and $105.3 million, respectively, net of deferred financing costs. As of September 30, 2021 and December 31, 2020, the term loan facilities had a carrying value of $1.5 billion and $1.5 billion, respectively, net of deferred financing costs.
The Company and the Operating Partnership are borrowers jointly and severally obligated under the 2017 credit facility.
The 2017 credit facility includes certain restrictions and covenants (see Restrictive Covenants below).
Restrictive Covenants
The terms of the 2017 credit facility and certain of our senior unsecured notes include certain restrictions and covenants which may limit, among other things, our ability to pay dividends, make certain types of investments, incur additional indebtedness, incur liens and enter into negative pledge agreements and dispose of assets, and which require compliance with financial ratios relating to the maximum ratio of total indebtedness to total asset value, a minimum ratio of EBITDA to fixed charges, a maximum ratio of secured indebtedness to total asset value and a maximum ratio of unsecured indebtedness to unencumbered asset value. The dividend restriction referred to above provides that, we will not during any time when a default is continuing, make distributions with respect to common stock or other equity interests, except to enable the Company to continue to qualify as a REIT for Federal income tax purposes. As of September 30, 2021 and December 31, 2020, we were in compliance with all such covenants.
Interest Rate Risk
We are exposed to changes in interest rates primarily from our variable rate debt. Our exposure to interest rate fluctuations are managed through either the use of interest rate derivative instruments and/or through our variable rate debt and preferred equity investments. Based on the debt outstanding as of September 30, 2021, a hypothetical 100 basis point increase in the floating rate interest rate curve would increase our consolidated annual interest cost, net of interest income from variable rate debt and preferred equity investments, by $2.2 million and would increase our share of joint venture annual interest cost by $13.9 million. As of September 30, 2021, 26.8% of our $1.1 billion debt and preferred equity portfolio is indexed to LIBOR.
We recognize most derivatives on the balance sheet at fair value. Derivatives that are not hedges are adjusted to fair value through income. If a derivative is considered a hedge, depending on the nature of the hedge, changes in the fair value of the derivative will either be offset against the change in fair value of the hedged asset, liability, or firm commitment through earnings, or recognized in other comprehensive income until the hedged item is recognized in earnings.
Our long-term debt of $3.6 billion bears interest at fixed rates, and therefore the fair value of these instruments is affected by changes in the market interest rates. Our variable rate debt and variable rate joint venture debt as of September 30, 2021 bore interest based on a spread of LIBOR plus 100 basis points to LIBOR plus 340 basis points.
Contractual Obligations
Refer to our 2020 Annual Report on Form 10-K for a discussion of our contractual obligations. There have been no material changes, outside the ordinary course of business, to these contractual obligations during the nine months ended September 30, 2021.
Off-Balance Sheet Arrangements
We have off-balance sheet investments, including joint ventures and debt and preferred equity investments. These investments all have varying ownership structures. A majority of our joint venture arrangements are accounted for under the equity method of accounting as we have the ability to exercise significant influence, but not control, over the operating and financial decisions of these joint venture arrangements. Our off-balance sheet arrangements are discussed in Note 5, "Debt and Preferred Equity Investments" and Note 6, "Investments in Unconsolidated Joint Ventures" in the accompanying consolidated financial statements.
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Capital Expenditures
We estimate that for the remainder of the year ending December 31, 2021, we expect to incur $48.0 million of recurring capital expenditures on existing consolidated properties and $47.1 million of development or redevelopment expenditures on existing consolidated properties, of which $2.2 million will be funded by construction financing facilities or loan reserves. We expect our share of capital expenditures at our joint venture properties will be $61.0 million, of which $23.7 million will be funded by construction financing facilities or loan reserves. We expect to fund capital expenditures from operating cash flow, existing liquidity, and borrowings from construction financing facilities. Future property acquisitions may require substantial capital investments for refurbishment and leasing costs.
Dividends/Distributions
We expect to pay cash dividends to our stockholders based on the distributions we receive from our Operating Partnership, which are generated by the collection of property revenues, net of operating expenses, and interest on our debt and preferred equity portfolio.
To maintain our qualification as a REIT, we must pay annual dividends to our stockholders of at least 90% of our REIT taxable income, determined before taking into consideration the dividends paid deduction and net capital gains.
Any dividend we pay may be in the form of cash, stock or a combination thereof, subject to IRS limitations on the use of stock for dividends. Additionally, if our REIT taxable income in a particular year exceeds the amount of cash dividends we pay in that year, we may pay stock dividends in order to maintain our REIT status and avoid certain REIT-level taxes.
Before we pay any cash dividend, whether for Federal income tax purposes or otherwise, which would only be paid out of available cash to the extent permitted under the 2017 credit facility and senior unsecured notes, we must first meet both our operating requirements and scheduled debt service on our mortgages and loans payable.
Insurance
We maintain “all-risk” property and rental value coverage (including coverage regarding the perils of flood, earthquake and terrorism, excluding nuclear, biological, chemical, and radiological terrorism ("NBCR")), within three property insurance programs and liability insurance. Separate property and liability coverage may be purchased on a stand-alone basis for certain assets, such as development projects. Additionally, one of our captive insurance companies, Belmont Insurance Company, or Belmont, provides coverage for NBCR terrorist acts above a specified trigger. Belmont's retention is reinsured by our other captive insurance company, Ticonderoga Insurance Company ("Ticonderoga"). If Belmont or Ticonderoga are required to pay a claim under our insurance policies, we would ultimately record the loss to the extent of required payments. However, there is no assurance that in the future we will be able to procure coverage at a reasonable cost. Further, if we experience losses that are uninsured or that exceed policy limits, we could lose the capital invested in the damaged properties as well as the anticipated future cash flows from those properties. Additionally, our debt instruments contain customary covenants requiring us to maintain insurance and we could default under our debt instruments if the cost and/or availability of certain types of insurance make it impractical or impossible to comply with such covenants relating to insurance. Belmont and Ticonderoga provide coverage solely on properties owned by the Company or its affiliates.
Furthermore, with respect to certain of our properties, including properties held by joint ventures or subject to triple net leases, insurance coverage is obtained by a third-party and we do not control the coverage. While we may have agreements with such third parties to maintain adequate coverage and we monitor these policies, such coverage ultimately may not be maintained or adequately cover our risk of loss.
Funds from Operations
FFO is a widely recognized non-GAAP financial measure of REIT performance. The Company computes FFO in accordance with standards established by NAREIT, which may not be comparable to FFO reported by other REITs that do not compute FFO in accordance with the NAREIT definition, or that interpret the NAREIT definition differently than the Company does. The revised White Paper on FFO approved by the Board of Governors of NAREIT in April 2002, and subsequently amended in December 2018, defines FFO as net income (loss) (computed in accordance with GAAP), excluding gains (or losses) from sales of properties and real estate related impairment charges, plus real estate related depreciation and amortization and after adjustments for unconsolidated partnerships and joint ventures.
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The Company presents FFO because it considers it an important supplemental measure of the Company’s operating performance and believes that it is frequently used by securities analysts, investors and other interested parties in the evaluation of REITs, particularly those that own and operate commercial office properties. The Company also uses FFO as one of several criteria to determine performance-based compensation for members of its senior management. FFO is intended to exclude GAAP historical cost depreciation and amortization of real estate and related assets, which assumes that the value of real estate assets diminishes ratably over time. Historically, however, real estate values have risen or fallen with market conditions. Because FFO excludes depreciation and amortization unique to real estate, gains and losses from property dispositions, and real estate related impairment charges, it provides a performance measure that, when compared year over year, reflects the impact to operations from trends in occupancy rates, rental rates, operating costs, and interest costs, providing perspective not immediately apparent from net income. FFO does not represent cash generated from operating activities in accordance with GAAP and should not be considered as an alternative to net income (determined in accordance with GAAP), as an indication of the Company’s financial performance or to cash flow from operating activities (determined in accordance with GAAP) as a measure of the Company’s liquidity, nor is it indicative of funds available to fund the Company’s cash needs, including our ability to make cash distributions.
FFO for the three and nine months ended September 30, 2021 and 2020 are as follows (in thousands):

| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Net income attributable to SL Green common stockholders | $ | 388,205 |  |  | $ | 13,859 |  |  | $ | 486,073 |  |  | $ | 185,104 |
Add: |  |  |  |  |  |  |
Depreciation and amortization | 49,277 |  |  | 92,516 |  |  | 169,534 |  |  | 256,736 |
Joint venture depreciation and noncontrolling interest adjustments | 61,733 |  |  | 47,884 |  |  | 176,920 |  |  | 149,309 |
Net income attributable to noncontrolling interests | 21,768 |  |  | 1,216 |  |  | 26,035 |  |  | 11,218 |
Less: |  |  |  |  |  |  |
Equity in net loss on sale of interest in unconsolidated joint venture/real estate | (1,280) |  |  | — |  |  | (5,438) |  |  | — |
Depreciable real estate reserves and impairment | — |  |  | (6,627) |  |  | (5,696) |  |  | (6,627) |
Gain on sale of real estate, net | 187,766 |  |  | 26,104 |  |  | 285,338 |  |  | 163,624 |
Purchase price and other fair value adjustments | 206,779 |  |  | — |  |  | 209,443 |  |  | — |
Depreciation on non-rental real estate assets | 754 |  |  | 538 |  |  | 1,953 |  |  | 1,797 |
Funds from Operations attributable to SL Green common stockholders | $ | 126,964 |  |  | $ | 135,460 |  |  | $ | 372,962 |  |  | $ | 443,573 |
Cash flows provided by operating activities | $ | 87,748 |  |  | $ | 103,638 |  |  | $ | 191,012 |  |  | $ | 327,943 |
Cash flows provided by (used in) investing activities | 245,356 |  |  | (28,796) |  |  | 886,877 |  |  | 375,023 |
Cash flows used in financing activities | (303,672) |  |  | (871,676) |  |  | (1,104,751) |  |  | (639,947) |

Inflation
Substantially all of our office leases provide for separate real estate tax and operating expense escalations as well as operating expense recoveries based on increases in the CPI or other measures such as porters' wage. In addition, many of the leases provide for fixed base rent increases. We believe that inflationary increases will be at least partially offset by the contractual rent increases and expense escalations described above.
Accounting Standards Updates
The Accounting Standards Updates are discussed in Note 2, "Significant Accounting Policies-Accounting Standards Updates" in the accompanying consolidated financial statements.
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Forward-Looking Information
This report includes certain statements that may be deemed to be "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 and are intended to be covered by the safe harbor provisions thereof. All statements, other than statements of historical facts, included in this report that address activities, events or developments that we expect, believe or anticipate will or may occur in the future, including such matters as future capital expenditures, dividends and acquisitions (including the amount and nature thereof), development trends of the real estate industry and the New York metropolitan area markets, business strategies, expansion and growth of our operations and other similar matters, are forward-looking statements. These forward-looking statements are based on certain assumptions and analyses made by us in light of our experience and our perception of historical trends, current conditions, expected future developments and other factors we believe are appropriate.
Forward-looking statements are not guarantees of future performance and actual results or developments may differ materially, and we caution you not to place undue reliance on such statements. Forward-looking statements are generally identifiable by the use of the words "may," "will," "should," "expect," "anticipate," "estimate," "believe," "intend," "project," "continue," or the negative of these words, or other similar words or terms.
Forward-looking statements contained in this report are subject to a number of risks and uncertainties that may cause our actual results, performance or achievements to be materially different from future results, performance or achievements expressed or implied by forward-looking statements made by us. These risks and uncertainties include:
•the effect of general economic, business and financial conditions, and their effect on the New York City real estate market in particular;
•the effect of the on-going COVID-19 pandemic and the duration of the impact it will have on our business and the industry as a whole;
•dependence upon certain geographic markets;
•risks of real estate acquisitions, dispositions, development and redevelopment, including the cost of construction delays and cost overruns;
•risks relating to debt and preferred equity investments;
•availability and creditworthiness of prospective tenants and borrowers;
•bankruptcy or insolvency of a major tenant or a significant number of smaller tenants or borrowers;
•adverse changes in the real estate markets, including reduced demand for office space, increasing vacancy, and increasing availability of sublease space;
•availability of capital (debt and equity);
•unanticipated increases in financing and other costs, including a rise in interest rates;
•our ability to comply with financial covenants in our debt instruments;
•our ability to maintain our status as a REIT;
•risks of investing through joint venture structures, including the fulfillment by our partners of their financial obligations;
•the threat of terrorist attacks;
•our ability to obtain adequate insurance coverage at a reasonable cost and the potential for losses in excess of our insurance coverage, including as a result of environmental contamination; and
•legislative, regulatory and/or safety requirements adversely affecting REITs and the real estate business including costs of compliance with the Americans with Disabilities Act, the Fair Housing Act and other similar laws and regulations.
Other factors and risks to our business, many of which are beyond our control, are described in other sections of this report and in our other filings with the SEC. Except to the extent required by law, we undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of future events, new information or otherwise.
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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK
For quantitative and qualitative disclosure about market risk, see Item 2, "Management's Discussion and Analysis of Financial Condition and Results of Operation - Interest Rate Risk" in this Quarterly Report on Form 10-Q for the three and nine months ended September 30, 2021 for the Company and the Operating Partnership and Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations - Interest Rate Risk" in the Annual Report on Form 10-K for the year ended December 31, 2020 for the Company and the Operating Partnership. Our exposures to market risk have not changed materially since December 31, 2020.
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ITEM 4. CONTROLS AND PROCEDURES
SL GREEN REALTY CORP.
Evaluation of Disclosure Controls and Procedures
The Company maintains disclosure controls and procedures that are designed to ensure that information required to be disclosed in our Exchange Act reports is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms, and that such information is accumulated and communicated to the Company's management, including the Company's Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure based closely on the definition of "disclosure controls and procedures" in Rule 13a-15(e) of the Exchange Act. Notwithstanding the foregoing, a control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that it will detect or uncover failures within the Company to disclose material information otherwise required to be set forth in our periodic reports. Also, the Company has investments in certain unconsolidated entities. As the Company does not control these entities, its disclosure controls and procedures with respect to such entities are necessarily substantially more limited than those the Company maintains with respect to its consolidated subsidiaries.
As of the end of the period covered by this report, the Company carried out an evaluation, under the supervision and with the participation of the Company's management, including our Chief Executive Officer and our Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures. Based upon that evaluation as of the end of the period covered by this report, the Company's Chief Executive Officer and Chief Financial Officer concluded that its disclosure controls and procedures were effective to give reasonable assurances to the timely collection, evaluation and disclosure of information relating to the Company that would potentially be subject to disclosure under the Exchange Act and the rules and regulations promulgated thereunder.
Changes in Internal Control over Financial Reporting
There have been no significant changes in the Company's internal control over financial reporting during the quarter ended September 30, 2021 that have materially affected, or are reasonably likely to materially affect, its internal control over financial reporting.
SL GREEN OPERATING PARTNERSHIP, L.P.
Evaluation of Disclosure Controls and Procedures
The Company maintains disclosure controls and procedures that are designed to ensure that information required to be disclosed in our Exchange Act reports is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms, and that such information is accumulated and communicated to the Company's management, including the Company's Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure based closely on the definition of "disclosure controls and procedures" in Rule 13a-15(e) of the Exchange Act. Notwithstanding the foregoing, a control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that it will detect or uncover failures within the Company to disclose material information otherwise required to be set forth in our periodic reports. Also, the Company has investments in certain unconsolidated entities. As the Company does not control these entities, its disclosure controls and procedures with respect to such entities are necessarily substantially more limited than those the Company maintains with respect to its consolidated subsidiaries.
As of the end of the period covered by this report, the Company carried out an evaluation, under the supervision and with the participation of the Company's management, including our Chief Executive Officer and our Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures. Based upon that evaluation as of the end of the period covered by this report, the Company's Chief Executive Officer and Chief Financial Officer concluded that its disclosure controls and procedures were effective to give reasonable assurances to the timely collection, evaluation and disclosure of information relating to the Company that would potentially be subject to disclosure under the Exchange Act and the rules and regulations promulgated thereunder.
Changes in Internal Control over Financial Reporting
There have been no significant changes in the Operating Partnership's internal control over financial reporting during the quarter ended September 30, 2021 that have materially affected, or are reasonably likely to materially affect, its internal control over financial reporting.
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PART II. OTHER INFORMATION
ITEM 1. LEGAL PROCEEDINGS
As of September 30, 2021, the Company and the Operating Partnership were not involved in any material litigation nor, to management's knowledge, was any material litigation threatened against us or our portfolio which if adversely determined could have a material adverse impact on us.
In September 2021, the Company acquired the fee position in 1591-1597 Broadway. A third party has asserted ownership rights to the fee, which the Company is contesting. See Note 3, "Property Acquisitions."
On October 31, 2021, HNA, through an affiliated entity, filed for Chapter 11 bankruptcy protection on account of its investment in 245 Park Avenue, together with another asset in Chicago. The Company will be contesting the filing, on the basis that the filing was done in bad faith and in violation of HNA's agreements with the Company. See Note 5, "Debt and Preferred Equity Investments."
ITEM 1A. RISK FACTORS
As of September 30, 2021 there have been no material changes to the Risk Factors disclosed in "Part I. Item 1A. Risk Factors" in the Company's Annual Report on Form 10-K for the year ended December 31, 2020.
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ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
In August 2016, our Board of Directors approved a $1.0 billion share repurchase program under which we can buy shares of our common stock. The Board of Directors has since authorized five separate $500.0 million increases to the size of the share repurchase program in the fourth quarter of 2017, second quarter of 2018, fourth quarter of 2018, fourth quarter of 2019, and fourth quarter of 2020 bringing the total program size to $3.5 billion.
As of September 30, 2021, share repurchases, excluding the redemption of OP units, executed under the program were as follows:

Period | Shares repurchased | Average price paid per share | Total number of shares repurchased as part of the repurchase plan or programs
Year ended 2017 | 8,105,881 | $104.61 | 8,105,881
Year ended 2018 | 9,468,617 | $99.03 | 17,574,498
Year ended 2019 | 4,465,857 | $86.06 | 22,040,355
Year Ended 2020 | 8,529,279 | $62.39 | 30,569,634
Nine months ended September 30, 2021 | 3,797,082 | $72.89 | 34,366,716

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ITEM 3. DEFAULTS UPON SENIOR SECURITIES
None.
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ITEM 4. MINE SAFETY DISCLOSURES
Not Applicable.
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ITEM 5. OTHER INFORMATION
None.
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ITEM 6. EXHIBITS
Exhibits required by Item 601 of Regulation S-K are filed herewith or incorporated herein by reference and are listed in the attached Exhibit Index.

Exhibit No. |  | Description
31.1 |  | Certification by the Chairman and Chief Executive Officer of the Company pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
31.2 |  | Certification by the Chief Financial Officer of the Company pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
31.3 |  | Certification by the Chairman and Chief Executive Officer of the Company, the sole general partner of the Operating Partnership pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
31.4 |  | Certification by the Chief Financial Officer of the Company, the sole general partner of the Operating Partnership pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
32.1 |  | Certification by the Chairman and Chief Executive Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, filed herewith.
32.2 |  | Certification by the Chief Financial Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, filed herewith.
32.3 |  | Certification by the Chairman and Chief Executive Officer of the Company, the sole general partner of the Operating Partnership pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, filed herewith.
32.4 |  | Certification by the Chief Financial Officer of the Company, the sole general partner of the Operating Partnership pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, filed herewith.
101 |  |  | The following financial statements from SL Green Realty Corp. and SL Green Operating Partnership L.P.’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, formatted in Inline XBRL: (i) Consolidated Balance Sheets (unaudited), (ii) Consolidated Statements of Operations (unaudited), (iii) Consolidated Statements of Comprehensive Income (unaudited), (iv) Consolidated Statements of Equity (unaudited), (v) Consolidated Statements of Capital (unaudited) (vi) Consolidated Statements of Cash Flows (unaudited), and (vii) Notes to Consolidated Financial Statements (unaudited), detail tagged and filed herewith.
104 |  |  | Cover Page Interactive Data File (formatted as Inline XBRL in Exhibit 101)

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SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

|  | SL GREEN REALTY CORP.
|  | By: |  | SL Green Realty Corp.
|  |  |  | /s/ Matthew J. DiLiberto
Dated: November 8, 2021 |  | By: |  | Matthew J. DiLiberto Chief Financial Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated:

Signatures | Title | Date
/s/ Marc Holliday | Chairman of the Board of Directors and Chief Executive Officer and Director of SL Green, the sole general partner of the Operating Partnership (Principal Executive Officer) | November 8, 2021
Marc Holliday
/s/ Andrew W. Mathias | President and Director of SL Green, the sole general partner of the Operating Partnership | November 8, 2021
Andrew W. Mathias
/s/ Matthew J. DiLiberto | Chief Financial Officer of SL Green, the sole general partner of the Operating Partnership (Principal Financial and Accounting Officer) | November 8, 2021
Matthew J. DiLiberto
/s/ Stephen L. Green | Director of SL Green, the sole general partner of the Operating Partnership | November 8, 2021
Stephen L. Green
/s/ John H. Alschuler, Jr. | Director of SL Green, the sole general partner of the Operating Partnership | November 8, 2021
John H. Alschuler, Jr.
/s/ Edwin T. Burton, III | Director of SL Green, the sole general partner of the Operating Partnership | November 8, 2021
Edwin T. Burton, III
/s/ John S. Levy | Director of SL Green, the sole general partner of the Operating Partnership | November 8, 2021
John S. Levy
/s/ Craig M. Hatkoff | Director of SL Green, the sole general partner of the Operating Partnership | November 8, 2021
Craig M. Hatkoff
/s/ Betsy S. Atkins | Director of SL Green, the sole general partner of the Operating Partnership | November 8, 2021
Betsy S. Atkins
/s/ Lauren B. Dillard | Director of SL Green, the sole general partner of the Operating Partnership | November 8, 2021
Lauren B. Dillard

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SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

|  | SL GREEN OPERATING PARTNERSHIP, L.P.
|  | By: |  | /s/ Matthew J. DiLiberto
Dated: November 8, 2021 |  |  |  | Matthew J. DiLiberto Chief Financial Officer

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