Biggest changeFFO, Normalized FFO and AFFO should be considered only as supplements to net income computed in accordance with GAAP as measures of operations. 71 Table of Contents The table below is a reconciliation of net income attributable to common stockholders to FFO, Normalized FFO and AFFO for the years ended December 31, 2022, 2021 and 2020 (in thousands, except share and per share amounts): Years Ended December 31, 2022 2021 2020 Net income attributable to common stockholders $ 153,034 $ 112,638 $ 64,378 Real estate depreciation and amortization 61,303 41,776 28,025 Gain on sale of real estate (3,601) — — FFO attributable to common stockholders (basic) $ 210,736 $ 154,414 $ 92,403 Cash and non-cash interest expense on Exchangeable Senior Notes 546 7,517 — FFO attributable to common stockholders (diluted) $ 211,282 $ 161,931 $ 92,403 Acquisition-related expense 110 26 94 Financing expense 367 — 211 Litigation-related expense 3,010 — — Loss on exchange of Exchangeable Senior Notes 125 3,692 — Normalized FFO attributable to common stockholders (diluted) 214,894 165,649 92,708 Stock-based compensation 17,507 8,616 3,330 Non-cash interest expense 1,255 715 2,040 Above-market lease amortization 92 4 — AFFO attributable to common stockholders (diluted) $ 233,748 $ 174,984 $ 98,078 FFO per common share – diluted $ 7.64 $ 6.17 $ 4.72 Normalized FFO per common share – diluted $ 7.77 $ 6.31 $ 4.74 AFFO per common share – diluted $ 8.45 $ 6.66 $ 5.01 Weighted average common shares outstanding – basic 27,345,047 23,903,017 19,443,602 Restricted stock and RSUs 116,046 96,174 114,017 PSUs — 81,414 — Dilutive effect of Exchangeable Senior Notes 202,076 2,180,550 — Weighted average common shares outstanding – diluted 27,663,169 26,261,155 19,557,619 72 Table of Contents The table below is a reconciliation of quarterly net income attributable to common stockholders to FFO, Normalized FFO and AFFO for the years ended December 31, 2022 and 2021 (in thousands, except share and per share amounts): Three Months Ended (1) December 31, 2022 September 30, 2022 June 30, 2022 March 31, 2022 Net income attributable to common stockholders $ 41,168 $ 37,278 $ 39,876 $ 34,712 Real estate depreciation and amortization 16,302 15,900 15,233 13,868 Gain on sale of real estate (3,601) — — — FFO attributable to common stockholders (basic) $ 53,869 $ 53,178 $ 55,109 $ 48,580 Cash and non-cash interest expense on Exchangeable Senior Notes 72 72 68 334 FFO attributable to common stockholders (diluted) $ 53,941 $ 53,250 $ 55,177 $ 48,914 Acquisition-related expense — 15 — 95 Financing expense 249 14 104 — Litigation-related expense 779 2,112 119 — Loss on exchange of Exchangeable Senior Notes — — 7 118 Normalized FFO attributable to common stockholders (diluted) $ 54,969 $ 55,391 $ 55,407 $ 49,127 Stock-based compensation 4,312 4,379 4,437 4,379 Non-cash interest expense 321 316 311 307 Above-market lease amortization 23 23 23 23 AFFO attributable to common stockholders (diluted) $ 59,625 $ 60,109 $ 60,178 $ 53,836 FFO per common share – diluted $ 1.92 $ 1.89 $ 1.97 $ 1.86 Normalized FFO per common share – diluted $ 1.95 $ 1.97 $ 1.98 $ 1.87 AFFO per common share – diluted $ 2.12 $ 2.13 $ 2.15 $ 2.04 Weighted-average common shares outstanding – basic 27,938,804 27,938,568 27,850,561 25,620,253 Restricted stock and RSUs 117,831 118,567 82,387 110,457 PSUs — — — 102,333 Dilutive effect of Exchangeable Senior Notes 103,626 100,799 103,742 507,181 Weighted-average common shares outstanding – diluted 28,160,261 28,157,934 28,036,690 26,340,224 73 Table of Contents Three Months Ended (1) December 31, 2021 September 30, 2021 June 30, 2021 March 31, 2021 Net income attributable to common stockholders $ 28,292 $ 29,756 $ 29,001 $ 25,589 Real estate depreciation and amortization 12,205 10,891 9,841 8,839 FFO attributable to common stockholders (basic) $ 40,497 $ 40,647 $ 38,842 $ 34,428 Cash and non-cash interest expense 1,880 1,885 1,879 1,873 FFO attributable to common stockholders (diluted) $ 42,377 $ 42,532 $ 40,721 $ 36,301 Acquisition-related expense 7 — 11 8 Loss on exchange of Exchangeable Senior Notes 3,692 — — — Normalized FFO attributable to common stockholders (diluted) $ 46,076 $ 42,532 $ 40,732 $ 36,309 Stock-based compensation 2,192 2,191 2,132 2,101 Non-cash interest expense 298 299 118 — Above-market lease amortization 4 — — — AFFO attributable to common stockholders (diluted) $ 48,570 $ 45,022 $ 42,982 $ 38,410 FFO per common share – diluted $ 1.61 $ 1.62 $ 1.56 $ 1.39 Normalized FFO per common share – diluted $ 1.75 $ 1.62 $ 1.56 $ 1.39 AFFO per common share – diluted $ 1.85 $ 1.71 $ 1.64 $ 1.47 Weighted-average common shares outstanding – basic 23,941,930 23,890,537 23,889,761 23,889,398 Restricted stock and RSUs 98,093 98,093 96,230 92,194 PSUs 81,414 78,582 — — Dilutive effect of Exchangeable Senior Notes 2,142,148 2,193,492 2,182,691 2,170,959 Weighted-average common shares outstanding – diluted 26,263,585 26,260,704 26,168,682 26,152,551 (1) The sum of quarterly financial data may vary from annual data due to rounding and differences in the dilutive effect of potentially issuable shares of each reporting period.
Biggest changeThe table below is a reconciliation of net income attributable to common stockholders to FFO, Normalized FFO and AFFO for the years ended December 31, 2023, 2022 and 2021 (in thousands, except share and per share amounts): Years Ended December 31, 2023 2022 2021 Net income attributable to common stockholders $ 164,236 $ 153,034 $ 112,638 Real estate depreciation and amortization 67,194 61,303 41,776 Gain on sale of real estate — (3,601) — FFO attributable to common stockholders (basic) 231,430 210,736 154,414 Cash and non-cash interest expense on Exchangeable Senior Notes 219 546 7,517 FFO attributable to common stockholders (diluted) 231,649 211,282 161,931 Financing expense — 367 — Litigation-related expense 2,480 3,010 — Loss (gain) on exchange of Exchangeable Senior Notes (22) 125 3,692 Normalized FFO attributable to common stockholders (diluted) 234,107 214,784 165,623 Interest income on seller-financed note (1) 1,342 — — Stock-based compensation 19,581 17,507 8,616 Non-cash interest expense 1,375 1,255 715 Above-market lease amortization 92 91 4 AFFO attributable to common stockholders (diluted) $ 256,497 $ 233,637 $ 174,958 FFO per common share – diluted $ 8.20 $ 7.64 $ 6.17 Normalized FFO per common share – diluted $ 8.29 $ 7.76 $ 6.31 AFFO per common share – diluted $ 9.08 $ 8.45 $ 6.66 Weighted average common shares outstanding – basic 27,977,807 27,345,047 23,903,017 Restricted stock and RSUs 196,821 116,046 96,174 PSUs — — 81,414 Dilutive effect of Exchangeable Senior Notes 81,169 202,076 2,180,550 Weighted average common shares outstanding – diluted 28,255,797 27,663,169 26,261,155 (1) Amount reflects the non-refundable interest paid on the seller-financed note issued to us by the buyer in connection with our disposition of a portfolio of four properties in southern California previously leased to affiliates of Vertical, which is recognized as a deposit liability and is included in other liabilities in our consolidated balance sheet as of December 31, 2023, as the transaction did not qualify for recognition as a completed sale. 74 Table of Contents The tables below are reconciliations of quarterly net income attributable to common stockholders to FFO, Normalized FFO and AFFO for the years ended December 31, 2023 and 2022 (in thousands, except share and per share amounts): Three Months Ended (1) December 31, 2023 September 30, 2023 June 30, 2023 March 31, 2023 Net income attributable to common stockholders $ 41,295 $ 41,256 $ 40,931 $ 40,754 Real estate depreciation and amortization 17,098 16,678 16,704 16,714 FFO attributable to common stockholders (basic) 58,393 57,934 57,635 57,468 Cash and non-cash interest expense on Exchangeable Senior Notes 50 50 50 69 FFO attributable to common stockholders (diluted) 58,443 57,984 57,685 57,537 Litigation-related expense 152 1,112 670 546 Loss (gain) on exchange of Exchangeable Senior Notes — — — (22) Normalized FFO attributable to common stockholders (diluted) 58,595 59,096 58,355 58,061 Interest income on seller-financed note (2) 403 402 403 134 Stock-based compensation 4,934 4,934 4,884 4,829 Non-cash interest expense 383 335 331 326 Above-market lease amortization 23 23 23 23 AFFO attributable to common stockholders (diluted) $ 64,338 $ 64,790 $ 63,996 $ 63,373 FFO per common share – diluted $ 2.07 $ 2.05 $ 2.04 $ 2.04 Normalized FFO per common share – diluted $ 2.07 $ 2.09 $ 2.07 $ 2.06 AFFO per common share – diluted $ 2.28 $ 2.29 $ 2.26 $ 2.25 Weighted-average common shares outstanding – basic 27,996,393 27,983,004 27,981,517 27,949,747 Restricted stock and RSUs 206,667 206,919 201,462 171,741 Dilutive effect of Exchangeable Senior Notes 76,774 75,682 74,260 102,210 Weighted-average common shares outstanding – diluted 28,279,834 28,265,605 28,257,239 28,223,698 75 Table of Contents Three Months Ended (1) December 31, 2022 September 30, 2022 June 30, 2022 March 31, 2022 Net income attributable to common stockholders $ 41,168 $ 37,278 $ 39,876 $ 34,712 Real estate depreciation and amortization 16,302 15,900 15,233 13,868 Gain on sale of real estate (3,601) — — — FFO attributable to common stockholders (basic) 53,869 53,178 55,109 48,580 Cash and non-cash interest expense 72 72 68 334 FFO attributable to common stockholders (diluted) 53,941 53,250 55,177 48,914 Financing expense 249 14 104 — Litigation-related expense 779 2,112 119 — Loss (gain) on exchange of Exchangeable Senior Notes — — 7 118 Normalized FFO attributable to common stockholders (diluted) 54,969 55,376 55,407 49,032 Stock-based compensation 4,312 4,379 4,437 4,379 Non-cash interest expense 321 316 311 307 Above-market lease amortization 23 23 23 23 AFFO attributable to common stockholders (diluted) $ 59,625 $ 60,094 $ 60,178 $ 53,741 FFO per common share – diluted $ 1.92 $ 1.89 $ 1.97 $ 1.86 Normalized FFO per common share – diluted $ 1.95 $ 1.97 $ 1.98 $ 1.86 AFFO per common share – diluted $ 2.12 $ 2.13 $ 2.15 $ 2.04 Weighted-average common shares outstanding – basic 27,938,804 27,938,568 27,850,561 25,620,253 Restricted stock and RSUs 117,831 118,567 82,387 110,457 PSUs — — — 102,333 Dilutive effect of Exchangeable Senior Notes 103,626 100,799 103,742 507,181 Weighted-average common shares outstanding – diluted 28,160,261 28,157,934 28,036,690 26,340,224 (1) The sum of quarterly financial data may vary from annual data due to rounding and differences in the dilutive effect of potentially issuable shares of each reporting period.
Contractual Obligations The following table summarizes our contractual obligations as of December 31, 2022 (in thousands): Payments Due Exchangeable by Year Notes due 2026 Senior Notes Interest Office Rent Total 2023 $ — $ — $ 16,742 $ 496 $ 17,238 2024 — 6,436 16,534 511 23,481 2025 — — 16,500 526 17,026 2026 300,000 — 6,646 543 307,189 2027 — — — 45 45 Total $ 300,000 $ 6,436 $ 56,422 $ 2,121 $ 364,979 As of December 31, 2022, we had (1) approximately $96.6 million outstanding in commitments related to improvement allowances, which generally may be requested by the tenants at any time up until a date that is near the expiration of the initial term of the applicable lease; and (2) approximately $479,000 outstanding in commitments to fund a construction loan.
Contractual Obligations The following table summarizes our contractual obligations as of December 31, 2023 (in thousands): Payments Due Exchangeable by Year Notes due 2026 Senior Notes Interest Office Rent Total 2024 $ — $ 4,436 $ 16,523 $ 511 $ 21,470 2025 — — 16,500 526 17,026 2026 300,000 — 6,646 543 307,189 2027 — — — 45 45 2028 — — — — — Total $ 300,000 $ 4,436 $ 39,669 $ 1,625 $ 345,730 As of December 31, 2023, we had (1) approximately $18.7 million outstanding in commitments related to improvement allowances, which generally may be requested by the tenants at any time up until a date that is near the expiration of the initial term of the applicable lease; (2) approximately $11.8 million outstanding in commitments related to contracts with vendors for improvements at our properties, which are expected to be incurred by December 31, 2024; and (3) $1.0 million outstanding in commitments to fund a construction loan.
Cash Flows The following summary discussion of our cash flows is based on the consolidated statements of cash flows in Item 8, “Financial Statements and Supplementary Data” and is not meant to be an all-inclusive discussion of the changes in our cash flows for the periods presented below (in thousands): Year Ended December 31, 2022 2021 Change Net cash provided by operating activities $ 234,130 $ 188,747 $ 45,383 Net cash used in investing activities (396,201) (384,093) (12,108) Net cash provided by financing activities 164,224 155,759 8,465 Ending cash, cash equivalents and restricted cash 88,572 86,419 2,153 Cash flows provided by operating activities for the years ended December 31, 2022 and 2021 were approximately $234.1 million and $188.7 million, respectively.
Cash Flows The following summary discussion of our cash flows is based on the consolidated statements of cash flows in Item 8, “Financial Statements and Supplementary Data” and is not meant to be an all-inclusive discussion of the changes in our cash flows for the periods presented below (in thousands): Year Ended December 31, 2023 2022 Change Net cash provided by (used in) operating activities $ 255,543 $ 234,130 $ 21,413 Net cash provided by (used in) investing activities (6,788) (396,201) 389,413 Net cash provided by (used in) financing activities (195,628) 164,224 (359,852) Ending cash, cash equivalents and restricted cash 141,699 88,572 53,127 Operating Activities Cash flows provided by operating activities for the years ended December 31, 2023 and 2022 were approximately $255.5 million and $234.1 million, respectively.
In order for us to qualify as a REIT under the Code, the relevant sections of our charter provide that, subject to certain exceptions, no person or entity may own, or be deemed to own, by virtue of the applicable constructive ownership provisions of the Code, more than 9.8% (in value or number of shares, whichever is more restrictive) of the aggregate of our outstanding shares of stock or Series A Preferred Stock or more than 9.8% (in value or number of shares, whichever is more restrictive) of our outstanding common stock or any class or series of our outstanding preferred stock.
In order for us to qualify as a REIT under the Code, the relevant sections of our charter provide that, subject to certain exceptions, no person or entity may own, or be deemed to own, by virtue of the applicable constructive ownership provisions of the Code, more than 9.8% (in value or number of shares, whichever is more restrictive) of the aggregate of our outstanding shares of stock or Series A Preferred Stock or more than 9.8% (in value or number of shares, whichever is more restrictive) of our outstanding common stock or any class or series of our outstanding preferred stock. 65 Table of Contents Results of Operations Investments See Note 6 “Investments in Real Estate” in the notes to the consolidated financial statements for information regarding our investments in real estate and property portfolio activity during the year ended December 31, 2023.
Cash flows provided by operating activities increased from 2021 to 2022 primarily due to leases for properties we acquired during these time periods, annual escalations of base rent on our leases, and amendments to existing leases to increase improvement allowances at those properties, which resulted in a corresponding increase in base rents, partially offset by rent payment defaults by certain tenants, higher cash compensation to employees, higher public company, travel and occupancy costs and increased litigation expenses.
Cash flows provided by operating activities increased from 2022 to 2023 primarily due to leases for properties we acquired during these time periods, annual escalations of base rent on our leases, and amendments to existing leases to increase improvement allowances at those properties, which resulted in a corresponding increase in base rents, partially offset by rent payment defaults by certain tenants, higher cash compensation to employees and higher public company costs. 68 Table of Contents Investing Activities Cash flows used in investing activities for the year ended December 31, 2023 included approximately $189.0 million of purchases of investments in real estate, funding of draws for improvements and construction, and funding of construction loan and other investments in the aggregate, partially offset by approximately $182.2 million of net maturities of short-term investments.
Comparison of the Years Ended December 31, 2022 and 2021 (in thousands) Years Ended December 31, 2022 2021 Change Revenues: Rental (including tenant reimbursements) $ 274,377 $ 204,551 $ 69,826 Other 1,982 — 1,982 Total revenues 276,359 204,551 71,808 Expenses: Property expenses 10,520 4,443 6,077 General and administrative expense 38,520 22,961 15,559 Depreciation and amortization expense 61,303 41,776 19,527 Total expenses 110,343 69,180 41,163 Gain on sale of real estate 3,601 — 3,601 Income from operations 169,617 135,371 34,246 Interest and other income 3,195 397 2,798 Interest expense (18,301) (18,086) (215) Loss on exchange of Exchangeable Senior Notes (125) (3,692) 3,567 Net income 154,386 113,990 40,396 Preferred stock dividends (1,352) (1,352) — Net income attributable to common stockholders $ 153,034 $ 112,638 $ 40,396 Revenues Rental Revenues.
Comparison of the Years Ended December 31, 2023 and 2022 (in thousands) Years Ended December 31, 2023 2022 Change Revenues: Rental (including tenant reimbursements) $ 307,349 $ 274,377 $ 32,972 Other 2,157 1,982 175 Total revenues 309,506 276,359 33,147 Expenses: Property expenses 24,893 10,520 14,373 General and administrative expense 42,832 38,520 4,312 Depreciation and amortization expense 67,194 61,303 5,891 Total expenses 134,919 110,343 24,576 Gain on sale of real estate — 3,601 (3,601) Income from operations 174,587 169,617 4,970 Interest and other income 8,446 3,195 5,251 Interest expense (17,467) (18,301) 834 Gain (loss) on exchange of Exchangeable Senior Notes 22 (125) 147 Net income 165,588 154,386 11,202 Preferred stock dividends (1,352) (1,352) — Net income attributable to common stockholders $ 164,236 $ 153,034 $ 11,202 Revenues Rental Revenues.