8-K - ARE - Equibles

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 29, 2024

ALEXANDRIA REAL ESTATE EQUITIES, INC.

(Exact name of registrant as specified in its charter)

Maryland	1-12993	95-4502084
(State or other jurisdiction of<br>incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

26 North Euclid Avenue, Pasadena, California 91101

(Address of principal executive offices) (Zip code)

Registrant’s telephone number, including area code: (626) 578-0777

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4 (c) under the Exchange Act (17 CFR 240.13e-4 (c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.01 par value per share	ARE	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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. ☐

Item 2.02. Results of Operations and Financial Condition.

On January 29, 2024, Alexandria Real Estate Equities, Inc. (the “Company”) issued a press release entitled “Alexandria Real Estate Equities, Inc. Reports Fourth Quarter and Year Ended December 31, 2023 Financial and Operating Results.” The press release referred to certain supplemental information that is available on the Company’s website at www.are.com. A copy of the press release and supplemental information are attached hereto as Exhibit 99.1.

The information contained in this Item 2.02, including the exhibit referenced herein, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section. Such information shall not be incorporated by reference into any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

99.1 Alexandria Real Estate Equities, Inc.’s Earnings Press Release and Supplemental Information for the Fourth Quarter and Year Ended December 31, 2023

104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

Forward-Looking Statements

This current report on Form 8-K contains forward-looking statements within the meaning of Section 27A of the Securities Act, and Section 21E of the Exchange Act. These statements include words such as “forecast,” “guidance,” “goals,” “projects,” “estimates,” “anticipates,” “believes,” “expects,” “intends,” “may,” “plans,” “seeks,” “should,” “targets,” or “will,” or the negative of these words or similar words. Forward-looking statements involve certain risks and uncertainties, and actual results may differ materially from those discussed in each such statement. A number of important factors could cause actual results to differ materially from those included within or contemplated by the forward-looking statements, including, but not limited to, the factors described in the Company’s filings with the Securities and Exchange Commission, including the Company’s most recent annual report on Form 10-K and any subsequent quarterly reports on Form 10-Q. The Company does not undertake any responsibility to update any of these factors or to announce publicly any revisions to any of the forward-looking statements contained in this or any other document, whether as a result of new information, future events, or otherwise.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	ALEXANDRIA REAL ESTATE EQUITIES, INC.
January 29, 2024	By:	/s/ Joel S. Marcus
		Joel S. Marcus
		Executive Chairman
	By:	/s/ Peter M. Moglia
		Peter M. Moglia
		Chief Executive Officer and <br>Chief Investment Officer
	By:	/s/ Marc E. Binda
		Marc E. Binda
		Chief Financial Officer and Treasurer

Document

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024
Table of Contents
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December 31, 2023		COMPANY HIGHLIGHTS	Page	Page
---	---	---	---
Our Mission and Cluster Model	iii	Corporate Responsibility	xxiii
EARNINGS PRESS RELEASE	Page		Page
Fourth Quarter and Year Ended December 31, 2023Financial and Operating Results	1	Earnings Call Information and About the Company	7
Guidance	4	Consolidated Statements of Operations	8
Acquisitions	5	Consolidated Balance Sheets	9
Dispositions and Sales of Partial Interests	6	Funds From Operations and Funds From Operations per Share	10
SUPPLEMENTAL INFORMATION	Page		Page
Company Profile	13	External Growth / Investments in Real Estate
Investor Information	14	Investments in Real Estate	32
Financial and Asset Base Highlights	15	New Class A/A+ Development and Redevelopment Properties:
High-Qualityand DiverseClient Base	17
High-Quality and Diverse Client Base in AAA Locations	18	Recent Deliveries	34
Occupancy	19	Current Projects	37
Internal Growth		Summary of Pipeline	41
Key Operating Metrics	20	Construction Spending and Capitalization of Interest	46
Same Property Performance	21	Joint Venture Financial Information	47
Leasing Activity	22	Balance Sheet Management
Contractual Lease Expirations	23	Investments	49
Top 20 Tenants	24	Key Credit Metrics	50
Summary of Properties and Occupancy	25	Summary of Debt	51
Property Listing	26	Definitions and Reconciliations
		Definitions and Reconciliations	55	Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	ii
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(1)Source: YCharts. Based on aggregate market capitalization for the life science industry, encompassing biotechnology companies, drug manufacturers, and diagnostics and research companies, as of November 10, 2023.

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Source: S&P Global Market Intelligence. Assumes reinvestment of dividends.

(1)Alexandria’s IPO priced at $20.00 per share on May 27, 1997.

(2)REITs included in the FTSE Nareit Equity Health Care Index for which total shareholder return information since May 27, 1997 is available.

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(1)As of December 31, 2023, our asset base in North America includes 42.0 million RSF of operating properties and 5.5 million RSF of Class A/A+ properties undergoing construction and one near-term project expected to commence construction in the next two years, 2.1 million RSF of priority anticipated development and redevelopment projects, and 23.9 million SF of future development projects.

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Refer to “Net operating income” in the “Definitions and reconciliations” of our Supplemental Information for additional details and its reconciliation from the most directly comparable financial measures presented in accordance with GAAP.

(1)Our share of incremental annual net operating income from development and redevelopment projects placed into service primarily commencing from 1Q24 through 4Q27 is $389 million.

(2)Represents expected incremental annual net operating income to be placed into service, including partial deliveries for projects that stabilize in future years.

(3)Includes 1.4 million RSF expected to be stabilized in 2024 and is 93% leased. Refer to the initial and stabilized occupancy years in the “New Class A/A+ development and redevelopment properties: current projects” of our Supplemental Information for additional information.

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(2)Source: Evaluate Pharma, October 2023.

(3)Sources: PitchBook, BioCentury, and NASDAQ. Public markets include IPOs, follow-ons, and public equity financings.

(4)Sources: Congressional Research Service, “National Institutes of Health (NIH) Funding: FY1996-FY2024,” updated May 17, 2023. National Science Foundation (NSF).

(5)Source: The Giving Institute, “Giving USA 2023: The Annual Report on Philanthropy for the Year 2022.”

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Source: U.S. Food and Drug Administration. Novel therapies approved by the FDA (Center for Drug Evaluation and Research (CDER)) include new molecular entities and new biologics defined as products containing active moieties that have not previously been approved by the FDA.

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As of December 31, 2023.

(1)Represents contributions from existing consolidated real estate joint ventures to fund their share of construction costs from 1Q24 through 2027. Refer to “Construction spending and capitalization of interest” of our Supplemental Information for additional details.

(2)Quarter annualized. Refer to “Net debt and preferred stock to Adjusted EBITDA” in the “Definitions and reconciliations” of our Supplemental Information for additional details.

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As of December 31, 2023, unless noted otherwise.

(1)A credit rating is not a recommendation to buy, sell, or hold securities and may be subject to revision or withdrawal at any time. Top 10% ranking represents credit rating levels from S&P Global Ratings and Moody’s Investors Service for publicly traded U.S. REITs, from Bloomberg Professional Services.

(2)As of the date of this report.

(3)Quarter annualized. Refer to “Net debt and preferred stock to Adjusted EBITDA” in the “Definitions and reconciliations” of our Supplemental Information for additional details.

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Refer to “Funds from operations and funds from operations, as adjusted, attributable to Alexandria’s common stockholders” in the “Definitions and reconciliations” of our Supplemental Information for additional details.

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(1)Based on the closing price of our common stock on December 31, 2023 of $126.77 and the annualized dividend declared for the three months ended December 31, 2023 of $1.27 per common share. Refer to “Dividend yield” in the “Definitions and reconciliations” of our Supplemental Information for additional details.

(2)Represents the years ended December 31, 2019 through 2023.

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As of December 31, 2023.

(1)Represents the percentage of our annual rental revenue generated by our top 20 tenants that are also investment-grade or publicly traded large cap tenants. Refer to “Annual rental revenue” and “Investment-grade or publicly traded large cap tenants” in the “Definitions and reconciliations” of our Supplemental Information for additional details.

(2)Represents annual rental revenue currently generated from space that is targeted for a future change in use, including 1.1% of total annual rental revenue that is generated from covered land play projects for future development opportunities. The weighted-average remaining term of these leases is 4.0 years.

(3)Our “Other” tenants, which represent an aggregate of 3.0% of our annual rental revenue, comprise technology, professional services, finance, telecommunications, and construction/real estate companies, and (by less than 1.0% of our annual rental revenue) retail-related tenants.

(4)Represents annual rental revenue in effect as of December 31, 2023. Refer to “Annual rental revenue” in the “Definitions and reconciliations” of our Supplemental Information for additional details.

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(1)Represents tenant rents and receivables collected for each period end as of each quarter’s respective earnings release date.

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(1)Represents the average of acquired vacancy percentages as of December 31, 2020 through 2023.

(2)Represents the midpoint of our 2024 guidance range for occupancy percentage in North America as of December 31, 2024. Refer to “Guidance” in our Earnings Press Release for additional details.

(3)Represents occupancy percentage of operating properties in North America as of each period end.

Alexandria Real Estate Equities, Inc. All Rights Reserved. ©2024	xix

Represents rendering for future development and redevelopment properties. Refer to “New Class A/A+ development and redevelopment properties: summary of pipeline” of our Supplemental Information for additional details.

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Future phases are represented by renderings for future development properties. Refer to “New Class A/A+ development and redevelopment properties: summary of pipeline” of our Supplemental Information for additional details.

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Alexandria Real Estate Equities, Inc. Reports:

4Q23 Net Loss per Share – Diluted of $0.54;

2023 Net Income per Share – Diluted of $0.54; and

4Q23 and 2023 FFO per Share – Diluted, As Adjusted, of $2.28 and $8.97, respectively

PASADENA, Calif. – January 29, 2024 – Alexandria Real Estate Equities, Inc. (NYSE: ARE) announced financial and operating results for the fourth quarter and year ended December 31, 2023.

Key highlights
Operating results	4Q23		4Q22		2023		2022
Total revenues:
In millions	$	757.2	$	670.3	$	2,885.7	$	2,589.0
Growth	13.0%				11.5%
Net (loss) income attributable to Alexandria’s common stockholders – diluted
In millions	$	(91.9)	$	51.8	$	92.4	$	513.3
Per share	$	(0.54)	$	0.31	$	0.54	$	3.18
Funds from operations attributable to Alexandria’s common stockholders – diluted, as adjusted
In millions	$	389.8	$	353.6	$	1,532.3	$	1,361.7
Per share	$	2.28	$	2.14	$	8.97	$	8.42

Celebrating 30 years at the vanguard and heart of the $5 trillion secularly growing life science industry

We celebrated the 30th anniversary of our one-of-a-kind, once-in-a-generation company on January 5, 2024. Alexandria pioneered the novel Labspace® niche and created the first-ever REIT uniquely focused on the critically important life science industry with our founding on January 5, 1994. Over the past three decades, we have transformed life science real estate from a specialty niche into a compelling mainstream asset class. From our IPO on May 27, 1997 through December 31, 2023, we generated an outstanding total shareholder return (“TSR”) of 1,512%, significantly outperforming major indices over the same period, including the FTSE Nareit Equity Health Care Index’s TSR of 980% and the MSCI US REIT Index’s TSR of 792% (assuming reinvestment of dividends).

An operationally excellent, industry-leading REIT with a high-quality, diverse client base to support growing revenues, stable cash flows, and strong margins

Percentage of total annual rental revenue in effect from mega campuses as of December 31, 2023	75		%
Percentage of total annual rental revenue in effect from investment-grade or publicly traded large cap tenants as of December 31, 2023	52		%
Sustained strength in tenant collections:
Low tenant receivables as of December 31, 2023	$	8.2		million
January 2024 tenant rents and receivables collected as of January 29, 2024	99.4		%
4Q23 tenant rents and receivables collected as of January 29, 2024	99.9		%
Occupancy of operating properties in North America as of December 31, 2023	94.6		%
Operating margin	71		%
Adjusted EBITDA margin	69		%
Weighted-average remaining lease term as of December 31, 2023:
Top 20 tenants	9.6			years
All tenants	7.4			years

Solid annual leasing volume and rental rate increases with continued long lease terms

•Solid leasing volume aggregating 889,737 RSF during 4Q23 and 4.3 million RSF for 2023.

•Weighted-average lease term of 11.3 years for 2023, above our historically long weighted-average lease term of 8.8 years over the last 10 years.

•76% of our leasing activity during the last twelve months was generated from our existing tenant base.

	4Q23		2023
Total leasing activity – RSF	889,737		4,306,072
Leasing of development and redevelopment space – RSF	233,516		596,533
Lease renewals and re-leasing of space:
RSF (included in total leasing activity above)	477,142		3,046,386
Rental rate increase	9.2%	(1)	29.4%	(1)
Rental rate increase (cash basis)	5.5%	(1)	15.8%	(1)

(1)Includes the re-lease of 99,557 RSF to Cargo Therapeutics at 835 Industrial at a 4.1% decline in the cash rental rate compared with the rate from the former tenant that was less than three years into a 10-year lease. Excluding this lease, the rental rate increase on renewals and re-leasing of space was 21.4% and 9.7% (cash basis) for 4Q23 and 32.4% and 17.0% (cash basis) for 2023.

Strong and flexible balance sheet with significant liquidity, top 10% credit rating ranking among all publicly traded U.S. REITs

•Net debt and preferred stock to Adjusted EBITDA of 5.1x, equaling the lowest leverage levels in Company history, and fixed-charge coverage ratio of 4.5x for 4Q23 annualized.

•Significant liquidity of $5.8 billion.

•No debt maturities prior to 2025.

•Only 20% of our total debt matures in the next five years.

•12.8 years weighted-average remaining term of debt.

•98.1% of our debt has a fixed rate.

•Total debt and preferred stock to gross assets of 27%.

•$1.2 billion of expected capital contribution commitments from existing consolidated real estate joint venture partners to fund construction from 1Q24 through 2027.

•During 4Q23, we settled our outstanding forward equity sales agreements by issuing 699 thousand shares of common stock, for which we received net proceeds of $104.3 million.

Alexandria’s highly leased value-creation pipeline delivered the highest incremental annual net operating income in Company history of $145 million and $265 million, commencing during 4Q23 and 2023, respectively, and drives future incremental annual net operating income aggregating $495 million

•During 4Q23, we placed into service development and redevelopment projects aggregating 1.2 million RSF that are 99% leased across multiple submarkets and delivered incremental annual net operating income of $145 million. 4Q23 deliveries include:

•Accelerated delivery of 462,100 RSF at 325 Binney Street in our Cambridge submarket, which is 100% leased to Moderna, Inc.;

•345,996 RSF at 15 Necco Street in our Seaport Innovation District submarket, which is 97% leased to Eli Lilly and Company;

•278,282 RSF at 1150 Eastlake Avenue East, a multi-tenant building, in our Lake Union submarket, which is 100% leased; and

•88,038 RSF at 6040 George Watts Hill Drive in our Research Triangle submarket, which is 100% leased to FUJIFILM Diosynth Biotechnologies.

| Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024 | 1 | | --- | --- || Fourth Quarter and Year Ended December 31, 2023 Financial and Operating Results (continued) | | --- | | December 31, 2023 |

•Annual net operating income (cash basis) is expected to increase by $114 million upon the burn-off of initial free rent from recently delivered projects. Initial free rent has a weighted-average burn-off period of 10 months.

•66% of RSF in our value-creation pipeline is within our mega campuses.

(dollars in millions)	Incremental <br>Annual Net Operating Income			RSF	Leased/Negotiating<br>Percentage
Placed into service:
YTD 3Q23	$	120		1,290,721	100%
4Q23	145			1,228,604	99
Placed into service in 2023	$	265		2,519,325	100%
Expected to be placed into service(1):
2024	$	149	(2)	5,697,062	60%(3)
2025	146
1Q26 through 4Q27	200
	$	495

(1)Represents expected incremental annual net operating income to be placed into service, including partial deliveries for projects that stabilize in future years.

(2)Includes 1.4 million RSF expected to be stabilized in 2024 and is 93% leased. Refer to the initial and stabilized occupancy years in the “New Class A/A+ development and redevelopment properties: current projects” of our Supplemental Information for additional information.

(3)70% of the leased RSF of our value-creation projects was generated from our existing tenant base.

Continued solid net operating income and internal growth

•Net operating income (cash basis) of $1.9 billion for 4Q23 annualized, up $190.4 million, or 11.3%, compared to 4Q22 annualized.

•Same property net operating income growth:

•3.4% and 4.6% (cash basis) for 2023 over 2022, in line with our previously provided 2023 guidance.

•0.7% and 0.8% (cash basis) for 4Q23 over 4Q22, including four properties in our Greater Boston, San Francisco Bay Area, and San Diego markets, with temporary vacancy aggregating 331,454 RSF. This RSF is currently 64% leased/negotiating, with leases expected to commence primarily during 2H24.

•96% of our leases contain contractual annual rent escalations approximating 3%.

Consistent dividend strategy focuses on retaining significant net cash flows from operating activities after dividends for reinvestment

•Common stock dividend declared for 4Q23 of $1.27 per common share, aggregating $4.96 per common share for the year ended December 31, 2023, up 24 cents, or 5%, over the year ended December 31, 2022.

•Dividend yield of 4.0% as of December 31, 2023.

•Dividend payout ratio of 56% for the three months ended December 31, 2023.

•Average annual dividend per-share growth of 6% from 2019 to 2023.

•Significant net cash flows from operating activities after dividends retained for reinvestment aggregating $1.9 million for the years ended December 31, 2019 through 2023.

Execution of our value harvesting and asset recycling 2023 self-funding strategy

Our 2023 capital plan included $1.4 billion in funding primarily from dispositions and partial interest sales, of which $439.0 million was completed during 4Q23, and focused on the enhancement of our asset base through the following:

(in millions)
Value harvesting dispositions of 100% interest in properties not integral to our mega campus strategy	$	1,042
Strategic dispositions and partial interest sales	273
Proceeds of forward equity sales agreements entered into during 2022 and settled in 4Q23	104
Total	$	1,419

In January 2024, our existing ATM program became inactive upon expiration of the associated shelf registration. We expect to file a new shelf registration and ATM program in the near future.

Strong balance sheet management

Key metrics as of or for December 31, 2023

•$33.1 billion in total market capitalization.

•$21.8 billion in total equity capitalization, which ranks in the top 10% among all publicly traded U.S. REITs.

	4Q23		Target
	Quarter	Trailing	4Q24
	Annualized	12 Months	Annualized
Net debt and preferred stock to Adjusted EBITDA	5.1x	5.4x	Less than or equal to 5.1x
Fixed-charge coverage ratio	4.5x	4.7x	Greater than or equal to 4.5x

Investments

•As of December 31, 2023:

•Our non-real estate investments aggregated $1.4 billion.

•Unrealized gains presented in our consolidated balance sheet were $196.9 million, comprising gross unrealized gains and losses aggregating $320.4 million and $123.5 million, respectively.

•Investment income of $8.7 million for 4Q23 presented in our consolidated statement of operations consisted of $19.5 million of unrealized gains and $10.8 million of realized losses. Realized losses include $12.3 million of realized gains, offset by impairment charges of $23.1 million.

| Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024 | 2 | | --- | --- || Fourth Quarter and Year Ended December 31, 2023 Financial and Operating Results (continued) | | --- | | December 31, 2023 |

Other key highlights

Key items included in net income attributable to Alexandria’s common stockholders:
									YTD
			4Q22		4Q23		4Q22		2023		2022		2023		2022
(in millions, except per share amounts)					Per Share – Diluted				Amount				Per Share – Diluted
Unrealized gains (losses) on non-real estate investments	19.5		$	(24.1)	$	0.11	$	(0.15)	$	(201.5)	$	(412.2)	$	(1.18)	$	(2.55)
Gain on sales of real estate			—		0.36		—		277.0		537.9		1.62		3.33
Impairment of non-real estate investments			(20.5)		(0.13)		(0.12)		(74.6)		(20.5)		(0.44)		(0.13)
Impairment of real estate		(1)	(26.2)		(1.59)		(0.16)		(461.1)		(65.0)		(2.70)		(0.40)
Loss on early extinguishment of debt			—		—		—		—		(3.3)		—		(0.02)
Acceleration of stock compensation expense due to executive officer resignations			—		(0.11)		—		(20.3)		(7.2)		(0.12)		(0.04)
Total	(231.7)		$	(70.8)	$	(1.36)	$	(0.43)	$	(480.5)	$	29.7	$	(2.82)	$	0.19
(1)Represents impairment charges to reduce our investments in real estate assets to their respective estimated fair values less costs to sell upon their classification as held for sale, primarily consisting of non-laboratory assets that are not integral to our mega campus strategy, including (i) 94.8 million for two non-laboratory properties in our Seaport Innovation District submarket, (ii) 93.5 million for an office property in our New York City submarket, (iii) 36.1 million for a development land parcel in our Seaport Innovation District submarket, and (iv) 29.7 million for an office property in our Bothell submarket. We initially acquired these real estate assets with the intention to entitle or reposition each site as part of a life science campus, including the demolition of properties as necessary, upon expiration of the existing in-place leases, and ultimately develop or redevelop life science properties. Since acquiring these assets, the macroeconomic environment has changed and we decided not to proceed with them.Refer to “Funds from operations and funds from operations per share” of this Earnings Press Release for additional details.

All values are in US Dollars.

Industry and corporate responsibility leadership: catalyzing and leading the way for positive change to benefit human health and society

•In November 2023, Alexandria earned several 2023 TOBY (The Outstanding Building of the Year) Awards from BOMA (Building Owners and Managers Association) in Boston, San Diego, and Seattle King County:

•In our Greater Boston market, 60 Binney Street on our Alexandria Center® at Kendall Square mega campus won in the Laboratory Building category, and Buildings 200 and 1400 on our Alexandria Center® at One Kendall Square mega campus won in the Historical Building and Renovated Building categories, respectively.

•In our San Diego market, 9880 Campus Point Drive on our Campus Point by Alexandria mega campus, which is home to Alexandria GradLabs®, won a TOBY in the region’s first-ever Life Science category.

•In our Seattle market, 1165 Eastlake Avenue East on The Eastlake Life Science Campus by Alexandria mega campus won a TOBY in the region’s first-ever Life Science category.

•Alexandria continues to address some of today’s most pressing societal challenges through our impactful social responsibility pillars, with a prioritized focus on mental health and addiction. OneFifteen, a data-driven comprehensive care model for treating people living with addiction, which we pioneered in partnership with Verily, celebrated the fourth anniversary of its campus in Dayton, Ohio in October 2023. Since it opened its doors in 2019, OneFifteen has treated over 7,500 patients at this patient-centered holistic learning health system.

About Alexandria Real Estate Equities, Inc.

Alexandria Real Estate Equities, Inc. (NYSE: ARE), an S&P 500® company, is a best-in-class, mission-driven life science REIT making a positive and lasting impact on the world. As the pioneer of the life science real estate niche since our founding in 1994, Alexandria is the preeminent and longest-tenured owner, operator, and developer of collaborative life science, agtech, and advanced technology mega campuses in AAA innovation cluster locations, including Greater Boston, the San Francisco Bay Area, New York City, San Diego, Seattle, Maryland, and Research Triangle. Alexandria has a total market capitalization of $33.1 billion and an asset base in North America of 73.5 million SF as of December 31, 2023, which includes 42.0 million RSF of operating properties, 5.5 million RSF of Class A/A+ properties undergoing construction and one near-term project expected to commence construction in the next two years, 2.1 million RSF of priority anticipated development and redevelopment projects, and 23.9 million SF of future development projects. Alexandria has a longstanding and proven track record of developing Class A/A+ properties clustered in life science, agtech, and advanced technology mega campuses that provide our innovative tenants with highly dynamic and collaborative environments that enhance their ability to successfully recruit and retain world-class talent and inspire productivity, efficiency, creativity, and success. Alexandria also provides strategic capital to transformative life science, agrifoodtech, climate innovation, and technology companies through our venture capital platform. We believe our unique business model and diligent underwriting ensure a high-quality and diverse tenant base that results in higher occupancy levels, longer lease terms, higher rental income, higher returns, and greater long-term asset value. For additional information on Alexandria, please visit www.are.com.

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Guidance
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December 31, 2023
(Dollars in millions, except per share amounts)

The following guidance for 2024 has been updated to reflect our current view of existing market conditions and assumptions for the year ending December 31, 2024. There can be no assurance that actual results will not be materially higher or lower than these expectations. Also, refer to our discussion of “forward-looking statements” on page 7 of this Earnings Press Release for additional details. Key updates to our 2024 guidance from November 29, 2023 are summarized below which includes a $125 million reduction in excess 2023 bond capital held as cash at December 31, 2023 and a corresponding increase in incremental debt.

					2024 Guidance Midpoint
Summary of Change in Key Credit Metric Targets	As of 1/29/24		As of 11/29/23	Summary of Key Changes in Sources and Uses of Capital	As of 1/29/24	As of 11/29/23
Fixed-charge coverage ratio – 4Q24 annualized	Greater than or equal to 4.5x		4.5x to 5.0x	Incremental debt	$900	$775
		Excess 2023 bond capital held as cash at December 31, 2023		$—	$125
Projected 2024 Earnings per Share and Funds From Operations per Share Attributable to Alexandria’s Common Stockholders – Diluted
---	---
Earnings per share(2)	3.49 to 3.69
Depreciation and amortization of real estate assets
Allocation to unvested restricted stock awards
Funds from operations per share(3)	9.37 to 9.57
Midpoint	9.47

All values are in US Dollars.

Key Assumptions	Low		High
Occupancy percentage in North America as of December 31, 2024	94.6%		95.6%
Lease renewals and re-leasing of space:
Rental rate increases	11.0%		19.0%
Rental rate increases (cash basis)	5.0%		13.0%
Same property performance:
Net operating income increases	0.5%		2.5%
Net operating income increases (cash basis)	3.0%		5.0%
Straight-line rent revenue	$	169	$	184
General and administrative expenses	$	181	$	191
Capitalization of interest	$	325	$	355
Interest expense	$	154	$	184
Realized gains on non-real estate investments(8)	$	95	$	125
Key Credit Metric Targets(1)
---	---
Net debt and preferred stock to Adjusted EBITDA – 4Q24 annualized	Less than or equal to 5.1x
Fixed-charge coverage ratio – 4Q24 annualized	Greater than or equal to 4.5x		Key Sources and Uses of Capital	Range			Midpoint
---	---	---	---	---	---	---
Sources of capital:
Incremental debt	$	900	$	900	$	900
Net cash provided by operating activities after dividends	400		500		450
Dispositions and sales of partial interests(4)(5)	900		1,900		1,400
Total sources of capital	$	2,200	$	3,300	$	2,750
Uses of capital:
Construction (refer to page 46)	$	1,950	$	2,550	$	2,250
Acquisitions(6) (refer to page 5)	250		750		500
Total uses of capital	$	2,200	$	3,300	$	2,750
Incremental debt (included above):
Issuance of unsecured senior notes payable(7)	$	600	$	1,400	$	1,000
Unsecured senior line of credit, commercial paper, and other	300		(500)		(100)
Net incremental debt	$	900	$	900	$	900

(1)Refer to each metric’s corresponding definition within the “Definitions and reconciliations” of our Supplemental Information.

(2)Excludes unrealized gains or losses on non-real estate investments after December 31, 2023 that are required to be recognized in earnings and are excluded from funds from operations per share, as adjusted.

(3)Refer to “Funds from operations and funds from operations, as adjusted, attributable to Alexandria’s common stockholders” in the “Definitions and reconciliations” of our Supplemental Information for additional information.

(4)As of January 29, 2024, we have pending real estate dispositions subject to signed letters of intent or purchase and sale agreements aggregating $142.4 million.

(5)In January 2024, our existing ATM program became inactive upon expiration of the associated shelf registration. We expect to file a new shelf registration and ATM program in the near future.

(6)Primarily represents strategic acquisitions that expand existing mega campuses or are associated with a new mega campus. We have completed acquisitions aggregating $103.3 million as of January 29, 2024.

(7)Our guidance assumes we issue new unsecured senior notes payable in 2025 to fund the repayment of our $600 million unsecured senior notes payable due on April 30, 2025. Subject to market conditions, we may seek opportunities in 2024 to fund the repayment of our 2025 debt maturity through the issuance of additional unsecured senior notes payable.

(8)Represents realized gains and losses included in funds from operations per share – diluted, as adjusted, and excludes significant impairments realized on non-real estate investments, if any. Refer to “Investments” of our Supplemental Information for additional details.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	4
Acquisitions
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December 31, 2023
(Dollars in thousands)
Property	Submarket/Market	Date of<br>Purchase		Number of Properties		Operating<br>Occupancy			Square Footage				Purchase Price
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
			Acquisitions With Development/Redevelopment Opportunities(1)
			Future Development		Active Development/Redevelopment			Operating With Future Development/ Redevelopment				Total(2)
2023 Acquisitions
Canada	Canada	1/30/23		1		100	%		—	—	247,743			247,743	100,837
Other	Various	Various		4		100			1,089,349	110,717	185,676			1,385,742	158,139
Total 2023 acquisitions				5		100	%		1,089,349	110,717	433,419			1,633,485	258,976
2024 Acquisitions
Completed through January 29, 2024	Various	Various		—		N/A			300,000	—	—			300,000	103,250
Pending acquisitions subject to signed letters of intent or purchase and sale agreements															358,746
															461,996
2024 guidance range														250,000 – 750,000

All values are in US Dollars.

(1)We expect to provide total estimated costs and related yields for development and redevelopment projects in the future, subsequent to the commencement of construction.

(2)Represents total square footage upon completion of development or redevelopment of one or more new Class A/A+ properties. Square footage presented includes RSF of buildings currently in operation with future development or redevelopment opportunities. Refer to “Investments in real estate” in the “Definitions and reconciliations” of our Supplemental Information for additional details on value-creation square feet currently included in rental properties.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	5
Dispositions and Sales of Partial Interests
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December 31, 2023
(Dollars in thousands, except per RSF amounts)		Property	Submarket/Market	Date of Sale	Interest Sold		RSF	Capitalization Rate		Capitalization Rate<br>(Cash Basis)		Sales Price			Sales Price per RSF
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
Value harvesting dispositions of 100% interest in properties not integral to our mega campus strategy
Completed in YTD 3Q23:
11119 North Torrey Pines Road	Torrey Pines/San Diego	5/4/23	100	%	72,506	4.4	%	4.6	%	$	86,000		$	1,186
225, 266, and 275 Second Avenue and 780 and 790 Memorial Drive(1)	Route 128 and Cambridge/Inner Suburbs/Greater Boston	6/13/23	100	%	428,663	N/A		N/A		365,226			$	852
275 Grove Street	Route 128/Greater Boston	6/27/23	100	%	509,702	N/A		N/A		109,349			N/A
Other										42,092
										602,667
Completed in 4Q23:
640 Memorial Drive, 100 Beaver Street, and 11025 and 11035 Roselle Street(2)	Cambridge and Inner Suburbs and Route 128/Greater Boston and Sorrento Valley/San Diego	12/20/23	100	%	361,102	N/A		N/A		312,244			$	865
380 and 420 E Street(3)	Seaport Innovation District/<br><br>Greater Boston	12/20/23	100	%	195,506	N/A		N/A		86,969			$	445
Other										39,753
										438,966		(4)
										1,041,633
Strategic dispositions and partial interest sales
15 Necco Street	Seaport Innovation District/<br><br>Greater Boston	4/11/23	18	%	345,996	6.6	%	5.4	%	66,108			$	1,626
9625 Towne Centre Drive	University Town Center/San Diego	6/21/23	20.1	%	163,648	4.2	%	4.5	%	32,261			$	981
421 Park Drive(5)	Fenway/Greater Boston	9/19/23	(5)		(5)	N/A		N/A		174,412			N/A
										272,781
Total 2023 dispositions and sales of partial interests										$	1,314,414

(1)Represents five laboratory properties at 225, 266, and 275 Second Avenue aggregating 329,005 RSF and 780 and 790 Memorial Drive aggregating 99,658 RSF. We calculated capitalization rates of 5.0% and 5.2% (cash basis) based upon net operating income and net operating income (cash basis), respectively, for 2Q23 annualized that includes vacancy available for redevelopment. Upon completion of the sale, we recognized a gain on sales of real estate aggregating $187.2 million.

(2)Represents four operating properties that were 46% occupied as of 3Q23 consisting of two laboratory properties at 640 Memorial Drive aggregating 242,477 RSF in Cambridgeport, MA and 100 Beaver Street aggregating 82,330 RSF in Waltham, MA, and two non-laboratory properties at 11025 and 11035 Roselle Street aggregating 36,295 RSF in our Sorrento Valley submarket. These non-core assets were not integral to our mega campus strategy and would have required significant capital to stabilize. Upon completion of the sale, we recognized a gain on sales of real estate aggregating $59.7 million.

(3)Represents two non-laboratory properties initially acquired as industrial and self-storage space with the intention to demolish the properties upon expiration of the existing in-place leases to entitle and develop a life science campus. During 4Q23, we decided to not proceed with this project due to the change in macroeconomic environment and a lack of transit options near the properties and recognized an impairment charge of $94.8 million to reduce our investment to its current fair value less costs to sell.

(4)Dispositions completed during the three months ended December 31, 2023 had annual net operating income of $22.7 million with a weighted-average disposition date of December 19, 2023 (weighted by net operating income for 4Q23 annualized).

(5)Represents the disposition of 268,023 RSF in a 660,034 RSF active development project at 421 Park Drive in our Fenway submarket. The proceeds from this transaction will help fund the construction of our remaining 392,011 RSF. The project commenced vertical construction in 4Q23 and is expected to be substantially completed in 2026. The buyer will fund the remaining costs to construct its 268,023 RSF, and as such, these costs are not included in our projected construction spending. We will develop and operate the completed project and will earn development fees over the next three years.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	6
Earnings Call Information and About the Company
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December 31, 2023

We will host a conference call on Tuesday, January 30, 2024, at 3:00 p.m. Eastern Time (“ET”)/noon Pacific Time (“PT”), which is open to the general public, to discuss our financial and operating results for the fourth quarter and year ended December 31, 2023. To participate in this conference call, dial (833) 366-1125 or (412) 902-6738 shortly before 3:00 p.m. ET/noon PT and ask the operator to join the call for Alexandria Real Estate Equities, Inc. The audio webcast can be accessed at www.are.com in the “For Investors” section. A replay of the call will be available for a limited time from 5:00 p.m. ET/2:00 p.m. PT on Tuesday, January 30, 2024. The replay number is (877) 344-7529 or (412) 317-0088, and the access code is 3134066.

Additionally, a copy of this Earnings Press Release and Supplemental Information for the fourth quarter and year ended December 31, 2023 is available in the “For Investors” section of our website at www.are.com or by following this link: https://www.are.com/fs/2023q4.pdf.

For any questions, please contact Joel S. Marcus, executive chairman and founder; Peter M. Moglia, chief executive officer and chief investment officer; Marc E. Binda, chief financial officer and treasurer; Paula Schwartz, managing director of Rx Communications Group, at (917) 633-7790; or Sara M. Kabakoff, senior vice president – chief content officer.

About the Company

***********

This document includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such forward-looking statements include, without limitation, statements regarding our 2024 earnings per share attributable to Alexandria’s common stockholders – diluted, 2024 funds from operations per share attributable to Alexandria’s common stockholders – diluted, net operating income, and our projected sources and uses of capital. You can identify the forward-looking statements by their use of forward-looking words, such as “forecast,” “guidance,” “goals,” “projects,” “estimates,” “anticipates,” “believes,” “expects,” “intends,” “may,” “plans,” “seeks,” “should,” “targets,” or “will,” or the negative of those words or similar words. These forward-looking statements are based on our current expectations, beliefs, projections, future plans and strategies, anticipated events or trends, and similar expressions concerning matters that are not historical facts, as well as a number of assumptions concerning future events. There can be no assurance that actual results will not be materially higher or lower than these expectations. These statements are subject to risks, uncertainties, assumptions, and other important factors that could cause actual results to differ materially from the results discussed in the forward-looking statements. Factors that might cause such a difference include, without limitation, our failure to obtain capital (debt, construction financing, and/or equity) or refinance debt maturities, lower than expected yields, increased interest rates and operating costs, adverse economic or real estate developments in our markets, our failure to successfully place into service and lease any properties undergoing development or redevelopment and our existing space held for future development or redevelopment (including new properties acquired for that purpose), our failure to successfully operate or lease acquired properties, decreased rental rates, increased vacancy rates or failure to renew or replace expiring leases, defaults on or non-renewal of leases by tenants, adverse general and local economic conditions, an unfavorable capital market environment, decreased leasing activity or lease renewals, failure to obtain LEED and other healthy building certifications and efficiencies, and other risks and uncertainties detailed in our filings with the Securities and Exchange Commission (“SEC”). Accordingly, you are cautioned not to place undue reliance on such forward-looking statements. All forward-looking statements are made as of the date of this Earnings Press Release and Supplemental Information, and unless otherwise stated, we assume no obligation to update this information and expressly disclaim any obligation to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise. For more discussion relating to risks and uncertainties that could cause actual results to differ materially from those anticipated in our forward-looking statements, and risks to our business in general, please refer to our SEC filings, including our most recent annual report on Form 10-K and any subsequent quarterly reports on Form 10-Q.

This document is not an offer to sell or a solicitation to buy securities of Alexandria Real Estate Equities, Inc. Any offers to sell or solicitations to buy our securities shall be made only by means of a prospectus approved for that purpose. Unless otherwise indicated, the “Company,” “Alexandria,” “ARE,” “we,” “us,” and “our” refer to Alexandria Real Estate Equities, Inc. and our consolidated subsidiaries. Alexandria®, Lighthouse Design® logo, Building the Future of Life-Changing Innovation®, That’s What’s in Our DNA®, At the Vanguard and Heart of the Life Science Ecosystem™, Alexandria Center®, Alexandria Technology Square®, Alexandria Technology Center®, and Alexandria Innovation Center® are copyrights and trademarks of Alexandria Real Estate Equities, Inc. All other company names, trademarks, and logos referenced herein are the property of their respective owners.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	7
Consolidated Statements of Operations
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December 31, 2023
(Dollars in thousands, except per share amounts)			Three Months Ended											Year Ended
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
	12/31/23			9/30/23		6/30/23		3/31/23		12/31/22		12/31/23		12/31/22
Revenues:
Income from rentals	$	742,637		$	707,531	$	704,339	$	687,949	$	665,674	$	2,842,456	$	2,576,040
Other income	14,579			6,257		9,561		12,846		4,607		43,243		12,922
Total revenues	757,216			713,788		713,900		700,795		670,281		2,885,699		2,588,962
Expenses:
Rental operations	222,726			217,687		211,834		206,933		204,352		859,180		783,153
General and administrative	59,289		(1)	45,987		45,882		48,196		42,992		199,354		177,278
Interest	31,967			11,411		17,072		13,754		17,522		74,204		94,203
Depreciation and amortization	285,246			269,370		273,555		265,302		264,480		1,093,473		1,002,146
Impairment of real estate	271,890		(2)	20,649		168,575		—		26,186		461,114		64,969
Loss on early extinguishment of debt	—			—		—		—		—		—		3,317
Total expenses	871,118			565,104		716,918		534,185		555,532		2,687,325		2,125,066
Equity in earnings of unconsolidated real estate joint ventures	363			242		181		194		172		980		645
Investment income (loss)	8,654			(80,672)		(78,268)		(45,111)		(19,653)		(195,397)		(331,758)
Gain on sales of real estate	62,227			—		214,810		—		—		277,037		537,918
Net (loss) income	(42,658)			68,254		133,705		121,693		95,268		280,994		670,701
Net income attributable to noncontrolling interests	(45,771)			(43,985)		(43,768)		(43,831)		(40,949)		(177,355)		(149,041)
Net (loss) income attributable to Alexandria Real Estate Equities, Inc.’s stockholders	(88,429)			24,269		89,937		77,862		54,319		103,639		521,660
Net income attributable to unvested restricted stock awards	(3,498)			(2,414)		(2,677)		(2,606)		(2,526)		(11,195)		(8,392)
Net (loss) income attributable to Alexandria Real Estate Equities, Inc.’s common stockholders	$	(91,927)		$	21,855	$	87,260	$	75,256	$	51,793	$	92,444	$	513,268
Net (loss) income per share attributable to Alexandria Real Estate Equities, Inc.’s common stockholders:
Basic	$	(0.54)		$	0.13	$	0.51	$	0.44	$	0.31	$	0.54	$	3.18
Diluted	$	(0.54)		$	0.13	$	0.51	$	0.44	$	0.31	$	0.54	$	3.18
Weighted-average shares of common stock outstanding:
Basic	171,096			170,890		170,864		170,784		165,393		170,909		161,659
Diluted	171,096			170,890		170,864		170,784		165,393		170,909		161,659
Dividends declared per share of common stock	$	1.27		$	1.24	$	1.24	$	1.21	$	1.21	$	4.96	$	4.72

(1)Includes $18.4 million of accelerated stock compensation expense primarily related to the resignations of two executive officers, Dean A. Shigenaga from his position as President and Chief Financial Officer and John H. Cunningham from his position as Executive Vice President – Regional Market Director – New York City. Excluding this accelerated stock compensation expense, general and administrative expenses would have been $40.9 million.

(2)Refer to “Funds from operations and funds from operations per share” of this Earnings Press Release for additional details.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	8
Consolidated Balance Sheets
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December 31, 2023
(In thousands)
	12/31/23		9/30/23		6/30/23		3/31/23		12/31/22
---	---	---	---	---	---	---	---	---	---	---
Assets
Investments in real estate	$	31,633,511	$	31,712,731	$	31,178,054	$	30,889,395	$	29,945,440
Investments in unconsolidated real estate joint ventures	37,780		37,695		37,801		38,355		38,435
Cash and cash equivalents	618,190		532,390		924,370		1,263,452		825,193
Restricted cash	42,581		35,321		35,920		34,932		32,782
Tenant receivables	8,211		6,897		6,951		8,197		7,614
Deferred rent	1,050,319		1,012,666		984,366		974,865		942,646
Deferred leasing costs	509,398		512,216		520,610		527,848		516,275
Investments	1,449,518		1,431,766		1,495,994		1,573,018		1,615,074
Other assets	1,421,894		1,501,611		1,475,191		1,602,403		1,599,940
Total assets	$	36,771,402	$	36,783,293	$	36,659,257	$	36,912,465	$	35,523,399
Liabilities, Noncontrolling Interests, and Equity
Secured notes payable	$	119,662	$	109,110	$	91,939	$	73,645	$	59,045
Unsecured senior notes payable	11,096,028		11,093,725		11,091,424		11,089,124		10,100,717
Unsecured senior line of credit and commercial paper	99,952		—		—		374,536		—
Accounts payable, accrued expenses, and other liabilities	2,610,943		2,653,126		2,494,087		2,479,047		2,471,259
Dividends payable	221,824		214,450		214,555		209,346		209,131
Total liabilities	14,148,409		14,070,411		13,892,005		14,225,698		12,840,152
Commitments and contingencies
Redeemable noncontrolling interests	16,480		51,658		52,628		44,862		9,612
Alexandria Real Estate Equities, Inc.’s stockholders’ equity:
Common stock	1,719		1,710		1,709		1,709		1,707
Additional paid-in capital	18,485,352		18,651,185		18,812,318		18,902,821		18,991,492
Accumulated other comprehensive loss	(15,896)		(24,984)		(16,589)		(20,536)		(20,812)
Alexandria Real Estate Equities, Inc.’s stockholders’ equity	18,471,175		18,627,911		18,797,438		18,883,994		18,972,387
Noncontrolling interests	4,135,338		4,033,313		3,917,186		3,757,911		3,701,248
Total equity	22,606,513		22,661,224		22,714,624		22,641,905		22,673,635
Total liabilities, noncontrolling interests, and equity	$	36,771,402	$	36,783,293	$	36,659,257	$	36,912,465	$	35,523,399
Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	9
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Funds From Operations and Funds From Operations per Share
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December 31, 2023
(In thousands)

The following table presents a reconciliation of net income (loss) attributable to Alexandria’s common stockholders, the most directly comparable financial measure presented in accordance with U.S. generally accepted accounting principles (“GAAP”), including our share of amounts from consolidated and unconsolidated real estate joint ventures, to funds from operations attributable to Alexandria’s common stockholders – diluted, and funds from operations attributable to Alexandria’s common stockholders – diluted, as adjusted, for the periods below:

	Three Months Ended											Year Ended
	12/31/23			9/30/23		6/30/23		3/31/23		12/31/22		12/31/23			12/31/22
Net (loss) income attributable to Alexandria’s common stockholders	$	(91,927)		$	21,855	$	87,260	$	75,256	$	51,793	$	92,444		$	513,268
Depreciation and amortization of real estate assets	281,939			266,440		270,026		262,124		261,185		1,080,529			988,363
Noncontrolling share of depreciation and amortization from consolidated real estate JVs	(30,137)			(28,814)		(28,220)		(28,178)		(29,702)		(115,349)			(107,591)
Our share of depreciation and amortization from unconsolidated real estate JVs	965			910		855		859		982		3,589			3,666
Gain on sales of real estate	(62,227)			—		(214,810)		—		—		(277,037)			(537,918)
Impairment of real estate – rental properties	263,982		(1)	19,844		166,602		—		20,899		450,428			20,899
Allocation to unvested restricted stock awards	(2,268)			(838)		(872)		(1,359)		(953)		(5,175)			(1,118)
Funds from operations attributable to Alexandria’s common stockholders – diluted(2)	360,327			279,397		280,841		308,702		304,204		1,229,429			879,569
Unrealized (gains) losses on non-real estate investments	(19,479)			77,202		77,897		65,855		24,117		201,475			412,193
Impairment of non-real estate investments	23,094		(3)	28,503		22,953		—		20,512		74,550			20,512
Impairment of real estate	7,908			805		1,973		—		5,287		10,686			44,070
Loss on early extinguishment of debt	—			—		—		—		—		—			3,317
Acceleration of stock compensation expense due to executive officer resignations	18,436		(4)	1,859		—		—		—		20,295		(4)	7,185
Allocation to unvested restricted stock awards	(472)			(1,330)		(1,285)		(867)		(482)		(4,121)			(5,137)
Funds from operations attributable to Alexandria’s common stockholders – diluted, as adjusted	$	389,814		$	386,436	$	382,379	$	373,690	$	353,638	$	1,532,314		$	1,361,709

(1)Represents impairment charges to reduce our investments in real estate assets to their respective estimated fair values less costs to sell upon their classification as held for sale, primarily consisting of non-laboratory assets that are not integral to our mega campus strategy, including (i) $94.8 million for two non-laboratory properties in our Seaport Innovation District submarket, (ii) $93.5 million for an office property in our New York City submarket, (iii) $36.1 million for a development land parcel in our Seaport Innovation District submarket, and (iv) $29.7 million for an office property in our Bothell submarket. We initially acquired these real estate assets with the intention to entitle or reposition each site as part of a life science campus, including the demolition of properties as necessary, upon expiration of the existing in-place leases, and ultimately develop or redevelop life science properties. Since acquiring these assets, the macroeconomic environment has changed and we decided not to proceed with them.

(2)Calculated in accordance with standards established by the Nareit Board of Governors.

(3)Primarily related to four non-real estate investments in privately held entities that do not report NAV.

(4)Related to the resignations of two executive officers, Dean A. Shigenaga from his position as President and Chief Financial Officer and John H. Cunningham from his position as Executive Vice President – Regional Market Director – New York City.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	10
Funds From Operations and Funds From Operations per Share (continued)
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December 31, 2023
(In thousands, except per share amounts)

The following table presents a reconciliation of net income (loss) per share attributable to Alexandria’s common stockholders, the most directly comparable financial measure presented in accordance with GAAP, including our share of amounts from consolidated and unconsolidated real estate joint ventures, to funds from operations per share attributable to Alexandria’s common stockholders – diluted, and funds from operations per share attributable to Alexandria’s common stockholders – diluted, as adjusted, for the periods below. Per share amounts may not add due to rounding.

	Three Months Ended										Year Ended
	12/31/23		9/30/23		6/30/23		3/31/23		12/31/22		12/31/23		12/31/22
Net (loss) income per share attributable to Alexandria’s common stockholders – diluted	$	(0.54)	$	0.13	$	0.51	$	0.44	$	0.31	$	0.54	$	3.18
Depreciation and amortization of real estate assets	1.48		1.40		1.42		1.38		1.41		5.67		5.47
Gain on sales of real estate	(0.36)		—		(1.26)		—		—		(1.62)		(3.33)
Impairment of real estate – rental properties	1.54		0.12		0.98		—		0.13		2.64		0.13
Allocation to unvested restricted stock awards	(0.01)		(0.01)		(0.01)		(0.01)		(0.01)		(0.04)		(0.01)
Funds from operations per share attributable to Alexandria’s common stockholders – diluted	2.11		1.64		1.64		1.81		1.84		7.19		5.44
Unrealized (gains) losses on non-real estate investments	(0.11)		0.45		0.46		0.39		0.15		1.18		2.55
Impairment of non-real estate investments	0.13		0.17		0.13		—		0.12		0.44		0.13
Impairment of real estate	0.05		—		0.02		—		0.03		0.06		0.27
Loss on early extinguishment of debt	—		—		—		—		—		—		0.02
Acceleration of stock compensation expense due to executive officer resignations	0.11		0.01		—		—		—		0.12		0.04
Allocation to unvested restricted stock awards	(0.01)		(0.01)		(0.01)		(0.01)		—		(0.02)		(0.03)
Funds from operations per share attributable to Alexandria’s common stockholders – diluted, as adjusted	$	2.28	$	2.26	$	2.24	$	2.19	$	2.14	$	8.97	$	8.42
Weighted-average shares of common stock outstanding – diluted	171,096		170,890		170,864		170,784		165,393		170,909		161,659

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	11

SUPPLEMENTAL

INFORMATION

Company Profile
December 31, 2023

Tenant base

Alexandria is known for our high-quality and diverse tenant base, with 52% of our total annual rental revenue being generated from tenants that are investment-grade rated or publicly traded large cap companies. The quality, diversity, breadth, and depth of our significant relationships with our tenants provide Alexandria with high-quality and stable cash flows. Alexandria’s underwriting team and long-term industry relationships positively distinguish us from all other publicly traded REITs and real estate companies.

Executive and senior management team

Alexandria’s executive and senior management team has unique experience and expertise in creating, owning, and operating highly dynamic and collaborative life science, agtech, and advanced technology mega campuses in key cluster locations to catalyze innovation. From design to development to the management of our high-quality, sustainable real estate, as well as our ongoing cultivation of collaborative environments with unique amenities and events, the Alexandria team has a best-in-class reputation of excellence in our niche. Alexandria’s highly experienced management team includes regional market directors with leading reputations and longstanding relationships within the life science, agtech, and technology communities in their respective innovation clusters. We believe that our experience, expertise, reputation, and key relationships in the real estate, life science, agtech, and technology industries provide Alexandria significant competitive advantages in attracting new business opportunities.

Alexandria’s executive and senior management team consists of 60 individuals, averaging 23 years of real estate experience, including 13 years with Alexandria. Our executive management team alone averages 18 years with Alexandria.

EXECUTIVE MANAGEMENT TEAM
Joel S. Marcus	Peter M. Moglia
Executive Chairman & <br>Founder	Chief Executive Officer & <br>Chief Investment Officer
Daniel J. Ryan	Hunter L. Kass
Co-President & Regional Market Director – San Diego	Co-President & Regional Market Director – Greater Boston
Marc E. Binda	Vincent R. Ciruzzi
Chief Financial Officer & <br>Treasurer	Chief Development Officer
Lawrence J. Diamond	Joseph Hakman
Co-Chief Operating Officer & Regional Market Director – Maryland	Co-Chief Operating Officer & <br>Chief Strategic Transactions Officer
Hart Cole	Jackie B. Clem
Executive Vice President – Capital Markets/Strategic Operations & <br>Co-Regional Market Director – Seattle	General Counsel & Secretary
Gary D. Dean	Andres R. Gavinet
Executive Vice President – <br>Real Estate Legal Affairs	Chief Accounting Officer
Onn C. Lee	Kristina A. Fukuzaki-Carlson
Executive Vice President –<br>Accounting	Executive Vice President – <br>Business Operations
Madeleine T. Alsbrook
Executive Vice President –<br>Talent Management
Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	13
---	---
Investor Information
---
December 31, 2023		Corporate Headquarters	New York Stock Exchange Trading Symbol	Information Requests
---	---	---	---
26 North Euclid Avenue	Common stock: ARE	Phone:	(626) 578-0777
Pasadena, California 91101		Email:	corporateinformation@are.com
		Website:	www.are.com		Equity Research Coverage
---		Alexandria is currently covered by the following research analysts. This list may be incomplete and is subject to change as firms initiate or discontinue coverage of our company. Please note that any opinions, estimates, or forecasts regarding our historical or predicted performance made by these analysts are theirs alone and do not represent opinions, estimates, or forecasts of Alexandria or our management. Alexandria does not by our reference or distribution of the information below imply our endorsement of or concurrence with any opinions, estimates, or forecasts of these analysts. Interested persons may obtain copies of analysts’ reports on their own as we do not distribute these reports. Several of these firms may, from time to time, own our stock and/or hold other long or short positions in our stock and may provide compensated services to us.
---
BNP Paribas Exane	Citigroup Global Markets Inc.	JMP Securities	RBC Capital Markets
---	---	---	---
Nate Crossett / Monir Koummal	Nicholas Joseph / Michael Griffin	Aaron Hecht	Michael Carroll / Aditi Balachandran
(646) 342-1588 / (646) 342-1554	(212) 816-1909 / (212) 816-5871	(415) 835-3963	(440) 715-2649 / (212) 428-6200
BofA Securities	Evercore ISI	J.P. Morgan Securities LLC	Robert W. Baird & Co. Incorporated
Jeff Spector / Joshua Dennerlein	Steve Sakwa / James Kammert	Anthony Paolone / Ray Zhong	Wesley Golladay / Nicholas Thillman
(646) 855-1363 / (646) 855-1681	(212) 446-9462 / (312) 705-4233	(212) 622-6682 / (212) 622-5411	(216) 737-7510 / (414) 298-5053
BTIG, LLC	Green Street	Mizuho Securities USA LLC	Wedbush Securities
Tom Catherwood / John Nickodemus	Dylan Burzinski	Vikram Malhotra / Georgi Dinkov	Richard Anderson / Jay Kornreich
(212) 738-6140 / (212) 738-6050	(949) 640-8780	(212) 282-3827 / (617) 352-1721	(212) 931-7001 / (212) 938-9942
CFRA	Jefferies Research Services, LLC
Michael Elliott	Peter Abramowitz / Ahmed Mehri
(646) 517-5742	(212) 336-7241 / (212) 778-8456
Fixed Income Research Coverage		Rating Agencies
Barclays Capital Inc.	Stifel Financial Corp.	Moody’s Investors Service	S&P Global Ratings
Srinjoy Banerjee / Japheth Otieno	Thierry Perrein	(212) 553-0376	Michael Souers
(212) 526-3521 / (212) 526-6961	(646) 376-5303		(212) 438-2508
J.P. Morgan Securities LLC
Mark Streeter
(212) 834-5086					Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	14
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Financial and Asset Base Highlights
---
December 31, 2023
(Dollars in thousands, except per share amounts)
	Three Months Ended (unless stated otherwise)
---	---	---	---	---	---	---
	12/31/23		9/30/23	6/30/23	3/31/23	12/31/22
Selected financial data from consolidated financial statements and related information
Rental revenues
Tenant recoveries
General and administrative expenses		(1)
General and administrative expenses as a percentage of net operating income –<br><br>trailing 12 months	9.8%		9.3%	9.7%	9.9%	9.8%
Operating margin	71%		70%	70%	70%	70%
Adjusted EBITDA margin	69%		69%	70%	69%	69%
Adjusted EBITDA – quarter annualized
Adjusted EBITDA – trailing 12 months
Net debt at end of period
Net debt and preferred stock to Adjusted EBITDA – quarter annualized	5.1x		5.4x	5.2x	5.3x	5.1x
Net debt and preferred stock to Adjusted EBITDA – trailing 12 months	5.4x		5.5x	5.4x	5.6x	5.2x
Total debt and preferred stock at end of period
Gross assets at end of period
Total debt and preferred stock to gross assets at end of period	27%		27%	27%	28%	25%
Fixed-charge coverage ratio – quarter annualized	4.5x		4.8x	4.7x	5.0x	5.0x
Fixed-charge coverage ratio – trailing 12 months	4.7x		4.9x	4.9x	5.0x	5.0x
Unencumbered net operating income as a percentage of total net operating income	100%		100%	100%	100%	100%
Closing stock price at end of period
Common shares outstanding (in thousands) at end of period	171,911		170,997	170,870	170,860	170,748
Total equity capitalization at end of period
Total market capitalization at end of period
Dividend per share – quarter/annualized	1.27/5.08		1.24/4.96	1.24/4.96	1.21/4.84	1.21/4.84
Dividend payout ratio for the quarter	56%		55%	55%	55%	58%
Dividend yield – annualized	4.0%		5.0%	4.4%	3.9%	3.3%
Amounts related to operating leases:
Operating lease liabilities at end of period
Rent expense
Capitalized interest
Weighted-average interest rate for capitalization of interest during the period	3.92%		3.77%	3.77%	3.69%	3.65%
(1)Increase from 3Q23 is primarily due to the acceleration of stock compensation expense from two executive officer resignations. Refer to “Funds from operations and funds from operations per share” of this Earnings Press Release for additional details.

All values are in US Dollars.

| Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024 | 15 | | --- | --- || Financial and Asset Base Highlights (continued) | | --- | | December 31, 2023 | | (Dollars in thousands, except annual rental revenue per occupied RSF amounts) || | Three Months Ended (unless stated otherwise) | | | | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | 12/31/23 | | | 9/30/23 | | 6/30/23 | | 3/31/23 | | 12/31/22 | | | Amounts included in funds from operations and non-revenue-enhancing capital expenditures | | | | | | | | | | | | | Straight-line rent revenue | $ | 41,586 | | $ | 29,805 | $ | 29,335 | $ | 33,191 | $ | 24,185 | | Amortization of acquired below-market leases | $ | 23,684 | | $ | 23,222 | $ | 24,789 | $ | 21,636 | $ | 20,125 | | Straight-line rent expense on ground leases | $ | 366 | | $ | 372 | $ | 373 | $ | 369 | $ | 487 | | Stock compensation expense | $ | 34,592 | (1) | $ | 16,288 | $ | 15,492 | $ | 16,486 | $ | 11,586 | | Amortization of loan fees | $ | 4,059 | | $ | 4,059 | $ | 3,729 | $ | 3,639 | $ | 3,975 | | Amortization of debt discounts | $ | (309) | | $ | (306) | $ | (304) | $ | (288) | $ | (272) | | Non-revenue-enhancing capital expenditures: | | | | | | | | | | | | | Building improvements | $ | 4,167 | | $ | 4,510 | $ | 4,376 | $ | 4,334 | $ | 4,128 | | Tenant improvements and leasing commissions | $ | 12,155 | | $ | 7,560 | $ | 38,587 | $ | 18,586 | $ | 25,049 | | Funds from operations attributable to noncontrolling interests | $ | 75,908 | | $ | 72,799 | $ | 71,988 | $ | 72,009 | $ | 70,651 | | Operating statistics and related information (at end of period) | | | | | | | | | | | | | Number of properties – North America | 411 | | | 419 | | 414 | | 433 | | 432 | | | RSF – North America (including development and redevelopment projects under construction) | 47,228,485 | | | 47,089,826 | | 46,408,793 | | 47,443,194 | | 47,371,259 | | | Total square feet – North America | 73,532,305 | | | 75,057,289 | | 74,854,150 | | 75,607,592 | | 74,566,128 | | | Annual rental revenue per occupied RSF – North America | $ | 56.08 | | $ | 53.34 | $ | 53.09 | $ | 52.46 | $ | 51.75 | | Occupancy of operating properties – North America | 94.6% | | | 93.7% | | 93.6% | | 93.6% | | 94.8% | | | Occupancy of operating and redevelopment properties – North America | 90.2% | | | 89.4% | | 89.2% | | 88.5% | | 89.4% | | | Weighted-average remaining lease term (in years) | 7.4 | | | 7.0 | | 7.2 | | 7.2 | | 7.1 | | | Total leasing activity – RSF | 889,737 | | | 867,582 | | 1,325,326 | | 1,223,427 | | 2,000,322 | | | Lease renewals and re-leasing of space – change in average new rental rates over expiring rates: | | | | | | | | | | | | | Rental rate increases | 9.2% | | | 28.8% | | 16.6% | | 48.3% | | 26.0% | | | Rental rate increases (cash basis) | 5.5% | | | 19.7% | | 8.3% | | 24.2% | | 19.6% | | | RSF (included in total leasing activity above) | 477,142 | | | 396,334 | | 1,052,872 | | 1,120,038 | | 1,494,345 | | | Top 20 tenants: | | | | | | | | | | | | | Annual rental revenue | $ | 769,066 | | $ | 655,990 | $ | 629,362 | $ | 634,461 | $ | 612,289 | | Weighted-average remaining lease term (in years) | 9.6 | | | 8.9 | | 9.4 | | 9.5 | | 9.4 | | | Same property – percentage change over comparable quarter from prior year: | | | | | | | | | | | | | Net operating income increases | 0.7% | | (2) | 3.1% | | 3.0% | | 3.7% | | 4.7% | | | Net operating income increases (cash basis) | 0.8% | | (2) | 4.6% | | 4.9% | | 9.0% | | 10.9% | |

(1)Refer to “Funds from operations and funds from operations per share” in our Earnings Press Release for additional details.

(2)Refer to “Same property performance” of this Supplemental Information for additional details.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	16
High-Quality and Diverse Client Base
---
December 31, 2023

Long-Duration and Stable Cash Flows From

High-Quality and Diverse Tenants

REIT Industry-Leading Client Base
Investment-Grade or Publicly Traded Large Cap Tenants
92%		52%
of ARE’s Top 20 Tenants<br><br>Annual Rental Revenue(1)		of ARE’s Total<br><br>Annual Rental Revenue(1)
Long-Duration Lease Terms		Sustained Strength in Tenant Collections(2)
9.6 Years	7.4 Years	99.9%	99.4%
Top 20 Tenants	All Tenants
Weighted-Average Remaining Term(3)		4Q23	January 2024

Refer to “Annual rental revenue” in the “Definitions and reconciliations” of this Supplemental Information for additional details about our methodology of calculating annual rental revenue from unconsolidated real estate joint ventures.

(1)Represents annual rental revenue in effect as of December 31, 2023.

(2)Represents the portion of total receivables billed for each indicated period collected as of January 29, 2024.

(3)Based on total annual rental revenue in effect as of December 31, 2023.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	17
High-Quality and Diverse Client Base in AAA Locations
---
December 31, 2023
Solid and Well-Diversified Tenant Base
---	---	---	---	---	---
		Industry			Annual Rental Revenue(1) per RSF
	Multinational Pharmaceutical		$	64.22
	Public Biotechnology – Approved or Marketed Product		$	68.98
	Institutional (Academic/Medical, Non-Profit, and<br><br>U.S. Government)		$	59.95
	Public Biotechnology – Preclinical or Clinical Stage		$	70.25
	Private Biotechnology		$	82.51
	Life Science Product, Service, and Device		$	43.45
	Future Change in Use(2)		$	44.38
	Investment-Grade or Large Cap Tech		$	31.93
	Other(3)		$	32.61
Percentage of ARE’s Annual Rental Revenue(1)

(1)Represents annual rental revenue in effect as of December 31, 2023.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	18
Occupancy
---
December 31, 2023

Solid Historical Occupancy of 96% Over Past 10 Years(1) From Historically Strong Demand for Our Class A/A+ Properties in AAA Locations

AAA Locations	Occupancy Across Key Locations
Percentage of ARE’s<br><br>Annual Rental Revenue(4)

(1)Represents average occupancy of operating properties in North America as of each December 31 for the last 10 years.

(2)Refer to footnote 1 in the “Summary of occupancy” subsection of “Summary of properties and occupancy” of this Supplemental Information for additional details.

(3)Acquired vacancy of 1.7% from properties recently acquired in 2021 and 2022 primarily represents lease-up opportunities. Excluding acquired vacancy, occupancy of operating properties in North America was 96.3% as of December 31, 2023.

(4)Represents annual rental revenue in effect as of December 31, 2023.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	19
Key Operating Metrics
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December 31, 2023		Historical Same Property<br>Net Operating Income Growth							Historical Rental Rate Growth: <br>Renewed/Re-Leased Space
---	---	---	---	---	---	---	---	---
Margins(2)							Favorable Lease Structure(3)
Operating	Adjusted EBITDA						Strategic Lease Structure by Owner and Operator of Collaborative <br>Life Science, Agtech, and Advanced Technology Mega Campuses
71%	69%						Increasing cash flows
				Percentage of leases containing<br><br>annual rent escalations		96%
			Stable cash flows
Weighted-Average Lease Term <br>of Executed Leases							Percentage of triple<br><br>net leases	94%
8.8	Years						Lower capex burden
		Percentage of leases providing for the<br><br>recapture of capital expenditures			93%
10 Years<br><br>(2014–2023)

Refer to “Same property performance” and “Definitions and reconciliations” of this Supplemental Information for additional details. “Definitions and reconciliations” contains the definition of “Net operating income” and its reconciliation from the most directly comparable financial measure presented in accordance with GAAP.

(1)The 10-year average represents the average for the years ended December 31, 2014 through 2023.

(2)Represents percentages for the three months ended December 31, 2023.

(3)Percentages calculated based on annual rental revenue in effect as of December 31, 2023.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	20
Same Property Performance
---
December 31, 2023
(Dollars in thousands)			December 31, 2023				December 31, 2023
---	---	---	---	---	---	---
Same Property Financial Data	Three Months Ended		Year Ended	Same Property Statistical Data	Three Months Ended	Year Ended
Percentage change over comparable period from prior year:				Number of same properties	330	288
Net operating income increase	0.7%	(1)	3.4%	Rentable square feet	32,894,921	28,691,105
Net operating income increase (cash basis)	0.8%	(1)	4.6%	Occupancy – current-period average	94.2%	94.6%
Operating margin	69%		69%	Occupancy – same-period prior-year average	95.2%	95.4%
	Three Months Ended December 31,							Year Ended December 31,
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
	2023		2022		Change	% Change		2023		2022		Change	% Change
Income from rentals:
Same properties	$	416,801	$	414,080		0.7	%	$	1,495,031	$	1,444,782		3.5	%
Non-same properties	144,627		85,268		59,359	69.6		648,940		505,316		143,624	28.4
Rental revenues	561,428		499,348		62,080	12.4		2,143,971		1,950,098		193,873	9.9
Same properties	152,240		145,147		7,093	4.9		537,698		504,299		33,399	6.6
Non-same properties	28,969		21,179		7,790	36.8		160,787		121,643		39,144	32.2
Tenant recoveries	181,209		166,326		14,883	8.9		698,485		625,942		72,543	11.6
Income from rentals	742,637		665,674		76,963	11.6		2,842,456		2,576,040		266,416	10.3
Same properties	263		259		4	1.5		813		827		(14)	(1.7)
Non-same properties	14,316		4,348		9,968	229.3		42,430		12,095		30,335	250.8
Other income	14,579		4,607		9,972	216.5		43,243		12,922		30,321	234.6
Same properties	569,304		559,486		9,818	1.8		2,033,542		1,949,908		83,634	4.3
Non-same properties	187,912		110,795		77,117	69.6		852,157		639,054		213,103	33.3
Total revenues	757,216		670,281		86,935	13.0		2,885,699		2,588,962		296,737	11.5
Same properties	178,114		171,066		7,048	4.1		623,484		586,323		37,161	6.3
Non-same properties	44,612		33,286		11,326	34.0		235,696		196,830		38,866	19.7
Rental operations	222,726		204,352		18,374	9.0		859,180		783,153		76,027	9.7
Same properties	391,190		388,420		2,770	0.7		1,410,058		1,363,585		46,473	3.4
Non-same properties	143,300		77,509		65,791	84.9		616,461		442,224		174,237	39.4
Net operating income	$	534,490	$	465,929		14.7	%	$	2,026,519	$	1,805,809		12.2	%
Net operating income – same properties	$	391,190	$	388,420		0.7	%	$	1,410,058	$	1,363,585		3.4	%
Straight-line rent revenue	(14,948)		(12,181)		(2,767)	22.7		(65,988)		(67,233)		1,245	(1.9)
Amortization of acquired below-market leases	(9,941)		(12,800)		2,859	(22.3)		(21,945)		(32,552)		10,607	(32.6)
Net operating income – same properties (cash basis)	$	366,301	$	363,439		0.8	%	$	1,322,125	$	1,263,800		4.6	%

All values are in US Dollars.

Refer to “Same property comparisons” in the “Definitions and reconciliations” of this Supplemental Information for a reconciliation of same properties to total properties. “Definitions and reconciliations” also contains definitions of “Tenant recoveries” and “Net operating income” and their respective reconciliations from the most directly comparable financial measures presented in accordance with GAAP.

(1)Includes the impact of four properties in our Greater Boston, San Francisco Bay Area, and San Diego markets, with temporary vacancy aggregating 331,454 RSF. This RSF is currently 64% leased/negotiating, with leases expected to commence primarily during 2H24.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	21
Leasing Activity
---
December 31, 2023
(Dollars per RSF)
		Three Months Ended				Year Ended				Year Ended
---	---	---	---	---	---	---	---	---	---	---	---
		December 31, 2023				December 31, 2023				December 31, 2022
	Including <br>Straight-Line Rent		Cash Basis		Including <br>Straight-Line Rent		Cash Basis		Including <br>Straight-Line Rent
Leasing activity:
Renewed/re-leased space(1)
Rental rate changes		9.2%		5.5%		29.4%		15.8%		31.0%	22.1%
New rates		55.16		56.52		52.35		50.82		50.37	$48.48
Expiring rates		50.52		53.56		40.46		43.87		38.44	$39.69
RSF		477,142				3,046,386				4,540,325
Tenant improvements/leasing commissions		23.21				26.09				27.83
Weighted-average lease term		5.8 years				8.7 years				5.0 years
Developed/redeveloped/previously vacant space leased(3)
New rates		71.13		64.47		65.66		59.74		73.46	$64.04
RSF		412,595				1,259,686				3,865,262
Weighted-average lease term		15.0 years				13.8 years				11.8 years
Leasing activity summary (totals):
New rates		61.69		59.77		56.09		53.33		60.98	$55.64
RSF		889,737				4,306,072				8,405,587
Weighted-average lease term		12.3 years				11.3 years				8.1 years
Lease expirations(1)
Expiring rates		47.91		51.98		43.84		45.20		37.41	$38.06
RSF		707,822				5,027,773				6,572,286

All values are in US Dollars.

Leasing activity includes 100% of results for properties in North America in which we have an investment.

(1)Excludes month-to-month leases aggregating 86,092 RSF and 266,292 RSF as of December 31, 2023 and 2022, respectively. During the year ended December 31, 2023, we granted free rent concessions averaging 0.6 months per annum.

(2)Includes the re-lease of 99,557 RSF to Cargo Therapeutics at 835 Industrial at a 4.1% decline in the cash rental rate compared with the rate from the former tenant that was less than three years into a 10-year lease. Excluding this lease, the rental rate increase on renewals and re-leasing of space was 21.4% and 9.7% (cash basis) for 4Q23 and 32.4% and 17.0% (cash basis) for 2023.

(3)Refer to “New Class A/A+ development and redevelopment properties: summary of pipeline” of this Supplemental Information for additional details on total project costs.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	22
Contractual Lease Expirations
---
December 31, 2023		Year			RSF		Percentage of<br>Occupied RSF			Annual Rental Revenue (per RSF)(1)			Percentage of Total<br>Annual Rental Revenue
---	---	---	---	---	---	---	---	---	---	---	---	---	---
	2024	(2)		3,443,219		8.8	%		$	49.36		7.9	%
	2025			3,876,007		9.9	%		$	52.08		9.3	%
	2026			2,576,109		6.6	%		$	52.02		6.2	%
	2027			2,720,041		6.9	%		$	52.75		6.6	%
	2028			4,685,961		11.9	%		$	51.92		11.2	%
	2029			2,517,755		6.4	%		$	52.73		6.1	%
	2030			2,549,798		6.5	%		$	50.18		5.9	%
	2031			3,711,668		9.4	%		$	56.14		9.6	%
	2032			1,157,219		2.9	%		$	59.66		3.2	%
	2033			2,780,801		7.1	%		$	51.97		6.7	%
Thereafter				9,310,793		23.6	%		$	63.13		27.3	%		Market		2024 Contractual Lease Expirations (in RSF)																Annual Rental Revenue<br><br>(per RSF)(1)			2025 Contractual Lease Expirations (in RSF)	Annual Rental Revenue<br><br>(per RSF)(1)
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
	Leased			Negotiating/<br>Anticipating			Targeted for<br><br>Future Development/<br><br>Redevelopment(3)				Remaining<br><br>Expiring<br><br>Leases(4)				Total(2)					Leased		Negotiating/<br>Anticipating		Targeted for Future<br><br>Development/<br><br>Redevelopment(3)				Remaining<br><br>Expiring Leases(4)				Total
Greater Boston		76,696			12,962			412,946		(5)		471,370				973,974		$	65.16		15,798		8,500		25,312		(5)		1,203,988		(6)		1,253,598		$	69.79
San Francisco Bay Area		48,238			3,038			191,333				491,345				733,954		62.13			35,797		—		—				476,712				512,509		66.85
New York City		—			—			—				363,218		(7)		363,218		57.25			—		—		—				65,538				65,538		88.23
San Diego		—			17,105			580,021		(8)		184,459				781,585		25.18			—		32,767		—				355,302				388,069		40.52
Seattle		6,748			18,724			50,552				197,588				273,612		26.33			11,220		—		—				323,344				334,564		30.29
Maryland		89,831			—			—				41,378				131,209		32.55			—		—		—				198,094				198,094		27.23
Research Triangle		72,078			17,000			—				75,140				164,218		50.44			—		—		—				220,439				220,439		50.92
Texas		—			—			—				—				—		—			—		—		198,972				604,382				803,354		36.27
Canada		20,107			—			—				—				20,107		26.57			—		—		—				88,412				88,412		20.44
Non-cluster/other markets		—			—			—				1,342				1,342		106.21			—		—		—				11,430				11,430		80.31
Total		313,698			68,829			1,234,852				1,825,840				3,443,219		$	49.36		62,815		41,267		224,284				3,547,641				3,876,007		$	52.08
Percentage of expiring leases		9	%		2	%		36	%			53	%			100	%				2	%	1	%	6	%			91	%			100	%

(1)Represents amounts in effect as of December 31, 2023.

(2)Excludes month-to-month leases aggregating 86,092 RSF as of December 31, 2023.

(3)Represents lease expirations, primarily related to acquired properties, targeted for:

	2024	2025
Future redevelopment expected to commence construction in the near term	466,248	151,346
Future development expected to be demolished following the lease expiration and the commencement of which is subject to tenant demand and overall market conditions	768,604	72,938
Average expiration date (weighted by expiring annual rental revenue)	July 22, 2024	January 12, 2025

Refer to “Investments in real estate” in the “Definitions and reconciliations” of this Supplemental Information for additional details on value-creation square feet currently included in rental properties.

(4)Excluding the expiration described in footnote 7, the largest remaining contractual lease expiration in 2024 is 97,702 RSF in our Mission Bay submarket where we are working to retain the current tenant and in 2025 is 357,136 RSF in our Austin submarket which we are in early negotiations to renew the existing tenant.

(5)Includes 308,446 RSF and 25,312 RSF in 2024 and 2025, respectively, at 311 Arsenal Street in our Cambridge/Inner Suburbs submarket which is targeted for redevelopment upon expiration of the existing leases.

(6)Includes 905,127 RSF in our Cambridge/Inner Suburbs submarket with the largest remaining contractual lease expiration aggregating 171,945 RSF at our Alexandria Technology Square® mega campus.

(7)Includes 349,947 RSF at 219 East 42nd Street that was previously classified as targeted for future development/redevelopment and is now classified as held for sale as of December 31, 2023 and expected to be sold in 2024.

(8)Includes 159,884 RSF at 4161 Campus Point Court in our University Town Center submarket that is targeted for future development into a 492,570 RSF building at 4165 Campus Point Court, which is 51% leased/negotiating and expected to commence construction in the next two years subject to tenant demand and overall market conditions.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	23
Top 20 Tenants
---
December 31, 2023
(Dollars in thousands, except average market cap amounts)

92% of Top 20 Tenants Annual Rental Revenue Is From Investment-Grade

or Publicly Traded Large Cap Tenants(1)

	Tenant								Percentage of Aggregate Annual Rental Revenue(1)		Investment-Grade <br>Credit Ratings		Average Market Cap(1)<br><br>(in billions)
				Moody’s		S&P
1	Moderna, Inc.	13.2			1,370,536		$	122,763	5.7	%	—	—	$	47.4
2	Eli Lilly and Company	9.1			1,154,917		93,815		4.3		A2	A+	$	440.5
3	Bristol-Myers Squibb Company	6.7			852,830		66,339		3.1		A2	A+	$	131.5
4	Roche	6.4			770,279		46,192		2.1		Aa2	AA	$	242.1
5	Takeda Pharmaceutical Company Limited	6.0			549,760		37,399		1.7		Baa2	BBB+	$	49.0
6	Alphabet Inc.	2.9			654,423		36,809		1.7		Aa2	AA+	$	1,509.5
7	Illumina, Inc.	6.6			890,389		36,204		1.7		Baa3	BBB	$	27.9
8	2seventy bio, Inc.(2)	9.7			312,805		33,617		1.6		—	—	$	0.4
9	Harvard University	6.0			389,233		32,494		1.5		Aaa	AAA	$	—
10	Novartis AG	4.6			450,563		31,196		1.4		A1	AA-	$	221.7
11	Cloud Software Group, Inc.	3.2	(3)		292,013		28,537		1.3		—	—	$	—
12	Uber Technologies, Inc.	58.7	(4)		1,009,188		27,750		1.3		—	—	$	84.8
13	Pfizer Inc.	1.2	(5)		524,159		25,242		1.2		A1	A+	$	208.5
14	AstraZeneca PLC	6.0			416,761		24,583		1.1		A3	A	$	212.5
15	United States Government	6.8			340,238		23,023		1.1		Aaa	AA+	$	—
16	Sanofi	7.0			267,278		21,444		1.0		A1	AA	$	129.2
17	New York University	8.1			218,983		21,056		1.0		Aa2	AA-	$	—
18	Massachusetts Institute of Technology	5.4			246,725		20,504		0.9		Aaa	AAA	$	—
19	Boston Children’s Hospital	12.8			266,857		20,066		0.9		Aa2	AA	$	—
20	Merck & Co., Inc.	9.9			312,935		20,033		0.9		A1	A+	$	274.8
	Total/weighted-average	9.6	(4)		11,290,872		$	769,066	35.5	%

(1)Based on total annual rental revenue in effect as of December 31, 2023. Refer to “Annual rental revenue” and “Investment-grade or publicly traded large cap tenants” in the “Definitions and reconciliations” of this Supplemental Information for additional details about our methodology of calculating annual rental revenue from unconsolidated real estate joint ventures and average market capitalization, respectively.

(2)As of September 30, 2023, 2seventy bio, Inc. held $250.6 million of cash, cash equivalents, and marketable securities. Additionally, 90.0% of the annual rental revenue generated by 2seventy bio, Inc. is guaranteed by another public biotechnology company (a party related to 2seventybio, Inc.).

(3)Includes one lease at a recently acquired property with future development and redevelopment opportunities. This lease with Cloud Software Group, Inc. (formerly known as TIBCO Software, Inc.) was in place when we acquired the properties.

(4)Includes (i) ground leases for land at 1455 and 1515 Third Street (two buildings aggregating 422,980 RSF) and (ii) leases at 1655 and 1725 Third Street (two buildings aggregating 586,208 RSF) in our Mission Bay submarket owned by our unconsolidated real estate joint venture in which we have an ownership interest of 10%. Annual rental revenue is presented using 100% of the annual rental revenue from our consolidated properties and our share of annual rental revenue from our unconsolidated real estate joint ventures. Refer to footnote 1 for additional details. Excluding the ground leases, the weighted-average remaining lease term for our top 20 tenants was 7.8 years as of December 31, 2023.

(5)Primarily relates to one office building in our New York City submarket aggregating 349,947 RSF with a contractual lease expiration in 3Q24, which was classified as held for sale as of December 31, 2023.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	24
Summary of Properties and Occupancy
---
December 31, 2023
(Dollars in thousands, except per RSF amounts)

Summary of properties

Market		RSF											Number of Properties		Annual Rental Revenue
	Operating		Development		Redevelopment			Total		% of Total				Total			% of Total		Per RSF
Greater Boston		10,836,743		975,419		1,304,051	(1)		13,116,213		28	%	72		$	820,759		38	%	$	79.82
San Francisco Bay Area		7,906,198		498,142		300,010			8,704,350		18		67		460,272			21		66.04
New York City		922,477		—		—			922,477		2		4		72,993			3		92.75
San Diego		7,831,370		1,187,796		—			9,019,166		19		90		320,460			14		43.48
Seattle		2,962,995		33,349		148,890			3,145,234		7		44		131,377			6		46.57
Maryland		3,582,494		510,601		—			4,093,095		9		51		123,780			6		36.57
Research Triangle		3,840,876		—		—			3,840,876		8		39		120,982			6		32.20
Texas		1,845,159		—		73,298			1,918,457		4		15		57,591			3		32.80
Canada		898,740		—		172,936			1,071,676		2		12		17,222			1		22.01
Non-cluster/other markets		347,806		—		—			347,806		1		10		15,827			1		57.96
Properties held for sale		1,049,135		—		—			1,049,135		2		7		26,907			1		N/A
North America		42,023,993		3,205,307		1,999,185			47,228,485		100	%	411		$	2,168,170		100	%	$	56.08
				5,204,492

(1)Primarily relates to our active redevelopment projects at 840 Winter Street and 40, 50, and 60 Sylvan Road, aggregating 716,604 RSF located in our Alexandria Center® for Life Science – Waltham mega campus, which are 43% leased/negotiating on a combined basis. This mega campus project is expected to capture demand in our Route 128 submarket of Greater Boston.

Summary of occupancy

	Operating Properties							Operating and Redevelopment Properties
Market	12/31/23			9/30/23		12/31/22		12/31/23		9/30/23		12/31/22
Greater Boston	94.9	%		93.2	%	94.5	%	84.7	%	83.3	%	85.5	%
San Francisco Bay Area	94.8			95.3		96.7		91.4		91.9		93.3
New York City	85.3		(1)	89.4		92.3		85.3		89.4		92.3
San Diego	94.1			90.9		95.4		94.1		90.9		95.4
Seattle	95.2			95.1		97.0		90.7		90.3		90.1
Maryland	95.6			96.6		95.8		95.6		96.6		93.3
Research Triangle	97.8			96.9		94.0		97.8		96.9		85.0
Texas	95.1			95.1		91.2		91.5		91.5		81.6
Subtotal	94.9			93.9		95.1		90.7		89.9		89.9
Canada	87.1			88.9		80.8		73.0		75.7		68.2
Non-cluster/other markets	78.5			80.5		75.0		78.5		80.5		75.0
North America	94.6	%		93.7	%	94.8	%	90.2	%	89.4	%	89.4	%

(1)Occupancy in our New York City market includes vacancy at our Alexandria Center® for Life Science – Long Island City property that is 41.7% occupied as of December 31, 2023. In addition, our mega campus at Alexandria Center® for Life Science – New York City is 95.8% occupied as of December 31, 2023.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	25
Property Listing
---
December 31, 2023
(Dollars in thousands)

Mega Campuses Encompass 75% of Our Annual Rental Revenue(1)

Market / Submarket / Address					RSF							Number of Properties	Annual Rental Revenue		Occupancy Percentage
						Operating			Operating and Redevelopment
		Operating		Development			Redevelopment			Total
Greater Boston
	Cambridge/Inner Suburbs
			Mega Campus: Alexandria Center® at Kendall Square		2,856,043			—		—	2,856,043	11	$	266,549	99.6	%	99.6	%
			50(2), 60(2), 75/125(2), 100(2), and 225(2) Binney Street, 140 and 215 First Street, 150 Second Street, 300 Third Street(2), 11 Hurley Street, and 100 Edwin H. Land Boulevard
			Mega Campus: Alexandria Center® at One Kendall Square		1,370,989			—		—	1,370,989	12	140,216		88.0		88.0
			One Kendall Square (Buildings 100, 200, 300, 400, 500, 600/700, 1400, 1800, and 2000), 325 and 399 Binney Street, and One Hampshire Street
			Mega Campus: Alexandria Technology Square®		1,185,284			—		—	1,185,284	7	115,886		99.9		99.9
			100, 200, 300, 400, 500, 600, and 700 Technology Square
			Mega Campus: The Arsenal on the Charles		872,883			248,018		—	1,120,901	13	51,957		97.6		97.6
			311, 321, and 343 Arsenal Street, 300, 400, and 500 North Beacon Street,<br> 1, 2, 3, and 4 Kingsbury Avenue, and 100, 200, and 400 Talcott Avenue
			Mega Campus: 480 Arsenal Way and 446, 458, 500, and 550 Arsenal Street		521,735			—		—	521,735	5	27,136		99.2		99.2
			99 Coolidge Avenue(2)		43,568			277,241		—	320,809	1	5,221		100.0		100.0
			Cambridge/Inner Suburbs		6,850,502			525,259		—	7,375,761	49	606,965		97.0		97.0
	Fenway
			Mega Campus: Alexandria Center® for Life Science – Fenway		1,234,888			450,160		133,578	1,818,626	3	98,035		92.0		83.0
			401 and 421(2) Park Drive and 201 Brookline Avenue(2)
	Seaport Innovation District
			5 and 15(2) Necco Street		441,396			—		—	441,396	2	39,724		75.7		75.7
			Seaport Innovation District		441,396			—		—	441,396	2	39,724		75.7		75.7
	Route 128
			Mega Campus: Alexandria Center® for Life Science – Waltham		326,110			—		716,604	1,042,714	5	22,738		100.0		31.3
			40, 50, and 60 Sylvan Road, 35 Gatehouse Drive, and 840 Winter Street
			Mega Campus: One Moderna Way		706,988			—		—	706,988	4	29,059		100.0		100.0
			19, 225, and 235 Presidential Way		585,226			—		—	585,226	3	13,374		100.0		100.0
			Route 128		1,618,324			—		716,604	2,334,928	12	65,171		100.0		69.3
	Other				691,633			—		453,869	1,145,502	6	10,864		79.2		47.8
			Greater Boston		10,836,743			975,419		1,304,051	13,116,213	72	$	820,759	94.9	%	84.7	%
	(1)Refer to “New Class A/A+ development and redevelopment properties: summary of pipeline” and to “Mega campus” in the “Definitions and reconciliations” of this Supplemental Information for additional details.<br><br>(2)We own a partial interest in this property through a real estate joint venture. Refer to “Joint venture financial information” of this Supplemental Information for additional details.																		Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	26
---	---		Property Listing (continued)
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December 31, 2023
(Dollars in thousands)		Market / Submarket / Address					RSF							Number of Properties	Annual Rental Revenue		Occupancy Percentage
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
						Operating			Operating and Redevelopment
		Operating		Development			Redevelopment			Total
San Francisco Bay Area
	Mission Bay
			Mega Campus: Alexandria Center® for Science and Technology –<br><br>Mission Bay(1)		2,012,791			212,796		—	2,225,587	10	$	91,856	94.9	%	94.9	%
			1455(2), 1515(2), 1655, and 1725 Third Street, 409 and 499 Illinois Street, 1450, 1500, and 1700 Owens Street, and 455 Mission Bay Boulevard South
			Mission Bay		2,012,791			212,796		—	2,225,587	10	91,856		94.9		94.9
	South San Francisco
			Mega Campus: Alexandria Technology Center® – Gateway(1)		1,342,194			—		300,010	1,642,204	12	75,299		86.6		70.8
			600(2), 601, 611, 630(2), 650(2), 651, 681, 685, 701, 751, 901(2), and 951(2)<br><br>Gateway Boulevard
			Mega Campus: Alexandria Center® for Advanced Technologies – South San Francisco		919,704			—		—	919,704	5	57,055		100.0		100.0
			213(1), 249, 259, 269, and 279 East Grand Avenue
			Alexandria Center® for Life Science – South San Francisco		503,388			—		—	503,388	3	32,372		89.8		89.8
			201 Haskins Way and 400 and 450 East Jamie Court
			Mega Campus: Alexandria Center® for Advanced Technologies – Tanforan		445,232			—		—	445,232	2	4,011		100.0		100.0
			1122 and 1150 El Camino Real
			Alexandria Center® for Life Science – Millbrae(1)		—			285,346		—	285,346	1	—		N/A		N/A
			230 Harriet Tubman Way
			500 Forbes Boulevard(1)		155,685			—		—	155,685	1	10,680		100.0		100.0
			South San Francisco		3,366,203			285,346		300,010	3,951,559	24	179,417		93.1		85.5
	Greater Stanford
			Mega Campus: Alexandria Center® for Life Science – San Carlos		739,157			—		—	739,157	9	50,755		99.0		99.0
			825, 835, 960, and 1501-1599 Industrial Road
			Alexandria Stanford Life Science District		703,570			—		—	703,570	9	65,005		98.3		98.3
			3160, 3165, 3170, and 3181 Porter Drive and 3301, 3303, 3305, 3307, and 3330 Hillview Avenue
			3412, 3420, 3440, 3450, and 3460 Hillview Avenue		338,751			—		—	338,751	5	24,275		83.2		83.2
			3875 Fabian Way		228,000			—		—	228,000	1	9,402		100.0		100.0
			2475 and 2625/2627/2631 Hanover Street and 1450 Page Mill Road		194,503			—		—	194,503	3	18,294		100.0		100.0
			2100, 2200, 2300, and 2400 Geng Road		162,584			—		—	162,584	4	12,241		100.0		100.0
			2425 Garcia Avenue/2400/2450 Bayshore Parkway		99,208			—		—	99,208	1	4,257		100.0		100.0
			3350 West Bayshore Road		61,431			—		—	61,431	1	4,770		100.0		100.0
			Greater Stanford		2,527,204			—		—	2,527,204	33	188,999		97.0		97.0
			San Francisco Bay Area		7,906,198			498,142		300,010	8,704,350	67	$	460,272	94.8	%	91.4	%
	Refer to “New Class A/A+ development and redevelopment properties: summary of pipeline” and to “Mega campus” in the “Definitions and reconciliations” of this Supplemental Information for additional details.<br><br><br><br>(1)We own a partial interest in this property through a real estate joint venture. Refer to “Joint venture financial information” of this Supplemental Information for additional details.<br><br>(2)We own 100% of this property.																		Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	27
---	---		Property Listing (continued)
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December 31, 2023
(Dollars in thousands)		Market / Submarket / Address					RSF							Number of Properties	Annual Rental Revenue		Occupancy Percentage
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
						Operating			Operating and Redevelopment
		Operating		Development			Redevelopment			Total
New York City
	New York City
			Mega Campus: Alexandria Center® for Life Science – New York City		743,377			—		—	743,377	3	$	67,706	95.8	%	95.8	%
			430 and 450 East 29th Street
			Alexandria Center® for Life Science – Long Island City		179,100			—		—	179,100	1	5,287		41.7		41.7
			30-02 48th Avenue
			New York City		922,477			—		—	922,477	4	72,993		85.3		85.3
San Diego
	Torrey Pines
			Mega Campus: One Alexandria Square		833,589			334,996		—	1,168,585	12	49,861		100.0		100.0
			3115 and 3215(1) Merryfield Row, 3010, 3013, and 3033 Science Park Road, 10935, 10945, and 10955 Alexandria Way, 10975 North Torrey Pines Road, 10975, 10995, and 10996 Torreyana Road, and 3545 Cray Court
			ARE Torrey Ridge		296,290			—		—	296,290	3	13,969		85.8		85.8
			10578, 10618, and 10628 Science Center Drive
			ARE Nautilus		213,900			—		—	213,900	4	8,729		88.2		88.2
			3530 and 3550 John Hopkins Court and 3535 and 3565 General Atomics Court
			Torrey Pines		1,343,779			334,996		—	1,678,775	19	72,559		95.0		95.0
	University Town Center
			Mega Campus: Campus Point by Alexandria(1)		1,666,590			598,029		—	2,264,619	13	77,574		99.0		99.0
			9880(2), 10010(2), 10140(2), 10210, 10260, 10290, and 10300 Campus Point Drive and 4135, 4155, 4161, 4224, 4242, and 4275(2) Campus Point Court
			Mega Campus: 5200 Illumina Way(1)		792,687			—		—	792,687	6	29,978		100.0		100.0
			ARE Esplanade		243,084			—		—	243,084	4	5,022		47.7		47.7
			4755, 4757, and 4767 Nexus Center Drive and 4796 Executive Drive
			9625 Towne Centre Drive(1)		163,648			—		—	163,648	1	6,528		100.0		100.0
			Costa Verde by Alexandria		8,730			—		—	8,730	2	879		100.0		100.0
			8505 Costa Verde Boulevard and 4260 Nobel Drive
			University Town Center		2,874,739			598,029		—	3,472,768	26	119,981		95.0		95.0
	Sorrento Mesa
			Mega Campus: SD Tech by Alexandria(1)		1,064,267			254,771		—	1,319,038	15	44,628		95.6		95.6
			9605, 9645, 9675, 9685, 9725, 9735, 9808, 9855, and 9868 Scranton Road, 5505 Morehouse Drive(2), and 10055, 10065, 10075, 10121(2), and 10151(2) Barnes Canyon Road
			Mega Campus: Sequence District by Alexandria		800,151			—		—	800,151	7	23,930		89.0		89.0
			6260, 6290, 6310, 6340, 6350, 6420, and 6450 Sequence Drive
			Pacific Technology Park(1)		544,352			—		—	544,352	5	8,969		89.1		89.1
			9389, 9393, 9401, 9455, and 9477 Waples Street
			Summers Ridge Science Park(1)		316,531			—		—	316,531	4	$	11,521	100.0	%	100.0	%
			9965, 9975, 9985, and 9995 Summers Ridge Road
	Refer to “New Class A/A+ development and redevelopment properties: summary of pipeline” and to “Mega campus” in the “Definitions and reconciliations” of this Supplemental Information for additional details.<br><br><br><br>(1)We own a partial interest in this property through a real estate joint venture. Refer to “Joint venture financial information” of this Supplemental Information for additional details.<br><br>(2)We own 100% of this property.																		Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	28
---	---		Property Listing (continued)
---
December 31, 2023
(Dollars in thousands)		Market / Submarket / Address					RSF							Number of Properties	Annual Rental Revenue		Occupancy Percentage
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
						Operating			Operating and Redevelopment
		Operating		Development			Redevelopment			Total
San Diego (continued)
	Sorrento Mesa (continued)
			Scripps Science Park by Alexandria		144,113			—		—	144,113	1	$	11,069	100.0	%	100.0	%
			10102 Hoyt Park Drive
			ARE Portola		101,857			—		—	101,857	3	4,034		100.0		100.0
			6175, 6225, and 6275 Nancy Ridge Drive
			5810/5820 Nancy Ridge Drive		83,354			—		—	83,354	1	4,693		100.0		100.0
			9877 Waples Street		63,774			—		—	63,774	1	2,680		100.0		100.0
			5871 Oberlin Drive		33,842			—		—	33,842	1	1,799		100.0		100.0
			Sorrento Mesa		3,152,241			254,771		—	3,407,012	38	113,323		93.8		93.8
	Sorrento Valley
			3911, 3931, and 3985 Sorrento Valley Boulevard		108,812			—		—	108,812	3	4,112		85.0		85.0
			11045 and 11055 Roselle Street		42,055			—		—	42,055	2	2,156		100.0		100.0
			Sorrento Valley		150,867			—		—	150,867	5	6,268		89.2		89.2
	Other				309,744			—		—	309,744	2	8,329		87.6		87.6
			San Diego		7,831,370			1,187,796		—	9,019,166	90	320,460		94.1		94.1
Seattle
	Lake Union
			Mega Campus: The Eastlake Life Science Campus by Alexandria		1,214,448			33,349		—	1,247,797	9	80,053		95.9		95.9
			1150, 1165, 1201(1), 1208(1), 1551, and 1616 Eastlake Avenue East, 188 and 199(1) East Blaine Street, and 1600 Fairview Avenue East
			Mega Campus: Alexandria Center® for Life Science – South Lake Union		290,754			—		—	290,754	1	17,969		100.0		100.0
			400 Dexter Avenue North(1)
			219 Terry Avenue North		25,966			—		—	25,966	1	1,372		90.7		90.7
			Lake Union		1,531,168			33,349		—	1,564,517	11	99,394		96.6		96.6
	SoDo
			830 4th Avenue South		42,380			—		—	42,380	1	1,052		70.5		70.5
	Elliott Bay
			3000/3018 Western Avenue		47,746			—		—	47,746	1	3,147		100.0		100.0
			410 West Harrison Street and 410 Elliott Avenue West		36,849			—		—	36,849	2	1,586		100.0		100.0
			Elliott Bay		84,595			—		—	84,595	3	4,733		100.0		100.0
	Bothell
			Mega Campus: Alexandria Center® for Advanced Technologies – Canyon Park		916,446			—		—	916,446	21	19,348		92.6		92.6
			22121 and 22125 17th Avenue Southeast, 22021, 22025, 22026, 22030, 22118, and 22122 20th Avenue Southeast, 22333, 22422, 22515, 22522, 22722, and 22745 29th Drive Southeast, 22213 and 22309 30th Drive Southeast, and 1629, 1631, 1725, 1916, and 1930 220th Street Southeast
			Alexandria Center® for Advanced Technologies – Monte Villa Parkway		311,030			—		148,890	459,920	6	5,972		96.8		65.4
			3301, 3303, 3305, 3307, 3555, and 3755 Monte Villa Parkway
			Bothell		1,227,476			—		148,890	1,376,366	27	25,320		93.7		83.6
	Other				77,376			—		—	77,376	2	878		100.0		100.0
			Seattle		2,962,995			33,349		148,890	3,145,234	44	$	131,377	95.2	%	90.7	%
Refer to “New Class A/A+ development and redevelopment properties: summary of pipeline” and to “Mega campus” in the “Definitions and reconciliations” of this Supplemental Information for additional details.<br><br><br><br>(1)We own a partial interest in this property through a real estate joint venture. Refer to “Joint venture financial information” of this Supplemental Information for additional details.																			Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	29
---	---		Property Listing (continued)
---
December 31, 2023
(Dollars in thousands)		Market / Submarket / Address					RSF							Number of Properties	Annual Rental Revenue		Occupancy Percentage
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
						Operating			Operating and Redevelopment
		Operating		Development			Redevelopment			Total
Maryland
	Rockville
			Mega Campus: Alexandria Center® for Life Science – Shady Grove		1,176,744			510,601		—	1,687,345	20	$	53,655	96.6	%	96.6	%
			9601, 9603, 9605, 9704, 9708, 9712, 9714, 9800, 9804, 9808, 9900, and 9950 Medical Center Drive, 14920 and 15010 Broschart Road, 9920 Belward Campus Drive, and 9810 and 9820 Darnestown Road
			1330 Piccard Drive		131,508			—		—	131,508	1	4,197		100.0		100.0
			1405 and 1450(1) Research Boulevard		114,849			—		—	114,849	2	3,025		73.3		73.3
			1500 and 1550 East Gude Drive		91,359			—		—	91,359	2	1,844		100.0		100.0
			5 Research Place		63,852			—		—	63,852	1	3,073		100.0		100.0
			5 Research Court		51,520			—		—	51,520	1	1,788		100.0		100.0
			12301 Parklawn Drive		49,185			—		—	49,185	1	1,598		100.0		100.0
			Rockville		1,679,017			510,601		—	2,189,618	28	69,180		95.8		95.8
	Gaithersburg
			Alexandria Technology Center® – Gaithersburg I		619,241			—		—	619,241	9	17,532		93.6		93.6
			9, 25, 35, 45, 50, and 55 West Watkins Mill Road and 910, 930, and 940 Clopper Road
			Alexandria Technology Center® – Gaithersburg II		486,633			—		—	486,633	7	18,543		100.0		100.0
			700, 704, and 708 Quince Orchard Road and 19, 20, 21, and 22 Firstfield Road
			20400 Century Boulevard		81,006			—		—	81,006	1	3,298		100.0		100.0
			401 Professional Drive		63,154			—		—	63,154	1	2,135		100.0		100.0
			950 Wind River Lane		50,000			—		—	50,000	1	1,234		100.0		100.0
			620 Professional Drive		27,950			—		—	27,950	1	1,207		100.0		100.0
			Gaithersburg		1,327,984			—		—	1,327,984	20	43,949		97.0		97.0
	Beltsville
			8000/9000/10000 Virginia Manor Road		191,884			—		—	191,884	1	3,021		100.0		100.0
			101 West Dickman Street(1)		135,423			—		—	135,423	1	1,503		64.4		64.4
			Beltsville		327,307			—		—	327,307	2	4,524		85.3		85.3
	Northern Virginia
			14225 Newbrook Drive		248,186			—		—	248,186	1	6,127		100.0		100.0
			Maryland		3,582,494			510,601		—	4,093,095	51	$	123,780	95.6	%	95.6	%
	Refer to “New Class A/A+ development and redevelopment properties: summary of pipeline” and to “Mega campus” in the “Definitions and reconciliations” of this Supplemental Information for additional details.<br><br><br><br>(1)We own a partial interest in this property through a real estate joint venture. Refer to “Joint venture financial information” of this Supplemental Information for additional details.																		Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	30
---	---		Property Listing (continued)
---
December 31, 2023
(Dollars in thousands)
Market / Submarket / Address					RSF							Number of Properties	Annual Rental Revenue		Occupancy Percentage
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
						Operating			Operating and Redevelopment
		Operating		Development			Redevelopment			Total
Research Triangle
	Research Triangle
			Mega Campus: Alexandria Center® for Life Science – Durham		2,155,252			—		—	2,155,252	15	$	52,175	97.5	%	97.5	%
			6, 8, 10, 12, 14, 40, 42, and 65 Moore Drive, 21, 25, 27, 29, and 31<br><br>Alexandria Way, 2400 Ellis Road, and 14 TW Alexander Drive
			Mega Campus: Alexandria Center® for Sustainable Technologies		364,493			—		—	364,493	7	14,233		99.9		99.9
			104, 108, 110, 112, and 114 TW Alexander Drive and 5 and 7 Triangle Drive
			Alexandria Center® for AgTech		345,467			—		—	345,467	2	16,541		97.2		97.2
			5 and 9 Laboratory Drive
			Mega Campus: Alexandria Center® for Advanced Technologies – Research Triangle		341,626			—		—	341,626	4	16,079		99.4		99.4
			6, 8, 10, and 12 Davis Drive
			Alexandria Technology Center® – Alston		155,533			—		—	155,533	3	3,837		90.9		90.9
			100, 800, and 801 Capitola Drive
			6040 George Watts Hill Drive		149,585			—		—	149,585	2	7,375		100.0		100.0
			Alexandria Innovation Center® – Research Triangle		136,729			—		—	136,729	3	4,093		97.2		97.2
			7010, 7020, and 7030 Kit Creek Road
			2525 East NC Highway 54		82,996			—		—	82,996	1	3,651		100.0		100.0
			601 Keystone Park Drive		77,595			—		—	77,595	1	2,137		100.0		100.0
			6101 Quadrangle Drive		31,600			—		—	31,600	1	861		100.0		100.0
			Research Triangle		3,840,876			—		—	3,840,876	39	120,982		97.8		97.8
Texas
	Austin
			Mega Campus: Intersection Campus		1,525,359			—		—	1,525,359	12	43,031		98.8		98.8
			507 East Howard Lane, 13011 McCallen Pass, 13813 and 13929 Center Lake Drive, and 12535, 12545, 12555, and 12565 Riata Vista Circle
			1001 Trinity Street and 1020 Red River Street		198,972			—		—	198,972	2	11,630		100.0		100.0
			Austin		1,724,331			—		—	1,724,331	14	54,661		98.9		98.9
	Greater Houston
			Alexandria Center® for Advanced Technologies at The Woodlands		120,828			—		73,298	194,126	1	2,930		41.5		25.8
			8800 Technology Forest Place
			Texas		1,845,159			—		73,298	1,918,457	15	57,591		95.1		91.5
Canada					898,740			—		172,936	1,071,676	12	17,222		87.1		73.0
Non-cluster/other markets					347,806			—		—	347,806	10	15,827		78.5		78.5
North America, excluding properties held for sale					40,974,858			3,205,307		1,999,185	46,179,350	404	2,141,263		94.6	%	90.2	%
Properties held for sale					1,049,135			—		—	1,049,135	7	26,907		63.3	%	63.3	%
Total – North America					42,023,993			3,205,307		1,999,185	47,228,485	411	$	2,168,170

Refer to “New Class A/A+ development and redevelopment properties: summary of pipeline” and to “Mega campus” in the “Definitions and reconciliations” of this Supplemental Information for additional details.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	31
Investments in Real Estate
---
December 31, 2023

Refer to “Net operating income” in the “Definitions and reconciliations” of this Supplemental Information for additional details and its reconciliation from the most directly comparable financial measures presented in accordance with GAAP.

(1)Our share of incremental annual net operating income from development and redevelopment projects placed into service primarily commencing from 1Q24 through 4Q27 is $389 million.

(2)Represents expected incremental annual net operating income to be placed into service, including partial deliveries for projects that stabilize in future years.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	32
Investments in Real Estate
---
December 31, 2023
(Dollars in thousands)

Investments in real estate

			Development and Redevelopment
			Active and Near-Term Construction				Future Opportunities Subject to <br>Market Conditions and Leasing
	Operating		Under Construction 61% Leased		Committed<br><br>Near Term<br><br>51% Leased/Negotiating(1)		Priority Anticipated		Future		Subtotal		Total
Square footage
Operating	40,974,858		—		—		—		—		—		40,974,858
New Class A/A+ development and redevelopment properties	—		5,204,492		492,570		2,710,462		26,754,679		35,162,203		35,162,203
Value-creation square feet currently included in rental properties(2)	—		—		(159,884)		(617,594)		(3,111,413)		(3,888,891)		(3,888,891)
Total square footage, excluding properties held for sale	40,974,858		5,204,492		332,686		2,092,868		23,643,266		31,273,312		72,248,170
Properties held for sale	1,049,135		—		—		—		235,000		235,000		1,284,135
Total square footage	42,023,993		5,204,492		332,686		2,092,868		23,878,266		31,508,312		73,532,305
Investments in real estate
Gross book value as of December 31, 2023(3)	$	28,388,009	$	3,661,679	$	46,257	$	702,248	$	3,816,125	$	8,226,309	$	36,614,318

(1)Represents one near-term project expected to commence construction during the next two years after December 31, 2023.

(2)Refer to “Investments in real estate” in the “Definitions and reconciliations” of this Supplemental Information for additional details on value-creation square feet currently included in rental properties.

(3)Balances exclude accumulated depreciation and our share of the cost basis associated with our properties held by our unconsolidated real estate joint ventures, which is classified as investments in unconsolidated real estate joint ventures in our consolidated balance sheets. Refer to “Investments in real estate” in the “Definitions and reconciliations” of this Supplemental Information for reconciliation detail of investments in real estate.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	33
New Class A/A+ Development and Redevelopment Properties: Recent Deliveries
---
December 31, 2023
325 Binney Street	140 First Street	99 Coolidge Avenue
---	---	---
Greater Boston/Cambridge	Greater Boston/Cambridge	Greater Boston/<br>Cambridge/Inner Suburbs
462,100 RSF	403,892 RSF	43,568 RSF
100% Occupancy	100% Occupancy	100% Occupancy
201 Brookline Avenue	15 Necco Street	751 Gateway Boulevard	1150 Eastlake Avenue East
---	---	---	---
Greater Boston/Fenway	Greater Boston/<br>Seaport Innovation District	San Francisco Bay Area/<br>South San Francisco	Seattle/Lake Union
451,967 RSF	345,996 RSF	230,592 RSF	278,282 RSF
100% Occupancy	97% Occupancy	100% Occupancy	100% Occupancy

| Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024 | 34 | | --- | --- || New Class A/A+ Development and Redevelopment Properties: Recent Deliveries (continued) | | --- | | December 31, 2023 | | Alexandria Center® for Advanced Technologies – Monte Villa Parkway(1) | 9808 Medical Center Drive | 9601 and 9603 Medical Center Drive(2) | 20400 Century Boulevard | | --- | --- | --- | --- | | Seattle/Bothell | Maryland/Rockville | Maryland/Rockville | Maryland/Gaithersburg | | 65,086 RSF | 26,460 RSF | 95,911 RSF | 81,006 RSF | | 100% Occupancy | 100% Occupancy | 100% Occupancy | 100% Occupancy | | 2400 Ellis Road, 40 Moore Drive, and 14 TW Alexander Drive(3) | 6040 George Watts Hill Drive, Phase II | 8800 Technology Forest Place | | --- | --- | --- | | Research Triangle/Research Triangle | Research Triangle/Research Triangle | Texas/Greater Houston | | 603,316 RSF | 88,038 RSF | 50,094 RSF | | 100% Occupancy | 100% Occupancy | 100% Occupancy |

(1)Image represents 3755 Monte Villa Parkway.

(2)Image represents 9601 Medical Center Drive.

(3)Image represents 2400 Ellis Road on the Alexandria Center® for Life Science – Durham mega campus.

| Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024 | 35 | | --- | --- || New Class A/A+ Development and Redevelopment Properties: Recent Deliveries (continued) | | --- | | December 31, 2023 | | (Dollars in thousands) |

Highest Incremental Annual Net Operating Income in Company History Generated

From 2023 Deliveries Totaled $265 Million, Including $145 Million in 4Q23

Property/Market/Submarket			Our Ownership Interest		RSF Placed in Service															Total Project
	4Q23 Delivery Date(1)			Prior to 1/1/23		1Q23			2Q23		3Q23			4Q23		Total			Initial Stabilized		Initial Stabilized (Cash Basis)
													RSF				Investment
Development projects
325 Binney Street/Greater Boston/Cambridge		11/17/23	100%		—			—		—		—			462,100			462,100	100%	462,100		$	823,000	8.9	%	7.6	%
99 Coolidge Avenue/Greater Boston/Cambridge/Inner Suburbs		12/13/23	75.0%		—			—		—		—			43,568			43,568	100%	320,809		468,000		7.1		7.0
201 Brookline Avenue/Greater Boston/Fenway		N/A	99.0%		340,073			107,174		4,720		—			—			451,967	100%	510,116		775,000		7.2		6.5
15 Necco Street/Greater Boston/Seaport Innovation District		11/17/23	56.7%		—			—		—		—			345,996			345,996	97%	345,996		540,000		6.7		5.6
751 Gateway Boulevard/San Francisco Bay Area/South San Francisco		N/A	51.0%		—			—		—		230,592			—			230,592	100%	230,592		246,000		7.0		7.5
1150 Eastlake Avenue East/Seattle/Lake Union		10/28/23	100%		—			—		—		—			278,282			278,282	100%	311,631		443,000		6.6		6.7
9808 Medical Center Drive/Maryland/Rockville		N/A	100%		—			—		—		26,460			—			26,460	100%	95,061		113,000		5.5		5.5
6040 George Watts Hill Drive, Phase II/Research Triangle/Research Triangle		11/1/23	100%		—			—		—		—			88,038			88,038	100%	88,038		66,000		8.1		7.1
Redevelopment projects
140 First Street/Greater Boston/Cambridge		N/A	100%		—			—		325,346		78,546			—			403,892	100%	408,259		1,248,000		5.6		4.7
Alexandria Center® for Advanced Technologies – Monte Villa Parkway/Seattle/Bothell		N/A	100%		—			35,847		—		29,239			—			65,086	100%	460,623		229,000		6.3		6.2
9601 and 9603 Medical Center Drive/Maryland/Rockville		N/A	100%		34,589			13,927		—		47,395			—			95,911	100%	95,911		63,000		8.0		6.8
20400 Century Boulevard/Maryland/Gaithersburg		N/A	100%		50,738			19,692		10,576		—			—			81,006	100%	81,006		35,000		9.5		9.3
2400 Ellis Road, 40 Moore Drive, and 14 TW Alexander Drive/Research Triangle/Research Triangle		N/A	100%		326,445			276,871		—		—			—			603,316	100%	603,316		241,000		8.1		6.8
8800 Technology Forest Place/Texas/Greater Houston		N/A	100%		—		—	—		46,434		3,660			—			50,094	100%	123,392		112,000		6.3		6.0
Canada		10/31/23	100%		—		—	—		—		34,242			10,620			44,862	100%	250,790		104,000		7.0		7.0
Weighted average/total		11/12/23			751,845			453,511		387,076		450,134			1,228,604			3,271,170		4,387,640		$	5,506,000	7.0	%	6.3	%

Refer to “New Class A/A+ development and redevelopment properties: current projects” of this Supplemental Information for details on the RSF in service and under construction, if applicable.

(1)Represents the average delivery date for deliveries that occurred during the current quarter, weighted by annual rental revenue.

(2)Relates to total operating RSF placed in service as of the most recent delivery.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	36
New Class A/A+ Development and Redevelopment Properties: Current Projects
---
December 31, 2023
99 Coolidge Avenue	500 North Beacon Street and<br><br>4 Kingsbury Avenue(1)	201 Brookline Avenue	401 Park Drive	421 Park Drive
---	---	---	---	---
Greater Boston/<br>Cambridge/Inner Suburbs	Greater Boston/<br>Cambridge/Inner Suburbs	Greater Boston/Fenway	Greater Boston/Fenway	Greater Boston/Fenway
277,241 RSF	248,018 RSF	58,149 RSF	133,578 RSF	392,011 RSF
36% Leased	85% Leased	98% Leased	17% Leased	13% Leased
40, 50, and 60 Sylvan Road(2)	840 Winter Street	1450 Owens Street(3)	651 Gateway Boulevard	230 Harriet Tubman Way
---	---	---	---	---
Greater Boston/Route 128	Greater Boston/Route 128	San Francisco Bay Area/<br>Mission Bay	San Francisco Bay Area/<br>South San Francisco	San Francisco Bay Area/<br>South San Francisco
576,924 RSF	139,680 RSF	212,796 RSF	300,010 RSF	285,346 RSF
29% Leased	100% Leased	—% Leased/Negotiating	22% Leased	100% Leased

(1)Image represents 500 North Beacon Street on the Arsenal on the Charles mega campus.

(2)Image represents 50 Sylvan Road. The Alexandria Center® for Life Science – Waltham mega campus project is expected to capture demand in our Route 128 submarket.

(3)Image represents a single- or multi-tenant project expanding our existing Alexandria Center® for Science and Technology – Mission Bay mega campus, which will be 100% funded by our joint venture partner. We are currently marketing the space for lease and have initial interest from publicly traded biotechnology and institutional tenants.

| Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024 | 37 | | --- | --- || New Class A/A+ Development and Redevelopment Properties: Current Projects (continued) | | --- | | December 31, 2023 || 10935, 10945, and 10955 Alexandria Way | 4135 Campus Point Court | 4155 Campus Point Court | 10075 Barnes Canyon Road | 1150 Eastlake Avenue East | | --- | --- | --- | --- | --- | | San Diego/Torrey Pines | San Diego/ University Town Center | San Diego/ University Town Center | San Diego/Sorrento Mesa | Seattle/Lake Union | | 334,996 RSF | 426,927 RSF | 171,102 RSF | 254,771 RSF | 33,349 RSF | | 75% Leased | 100% Leased | 100% Leased | 24% Leased/Negotiating | 100% Leased | | Alexandria Center® for Advanced Technologies – Monte Villa Parkway(1) | 9810 and 9820 Darnestown Road | 9808 Medical Center Drive | 8800 Technology Forest Place | | --- | --- | --- | --- | | Seattle/Bothell | Maryland/Rockville | Maryland/Rockville | Texas/Greater Houston | | 148,890 RSF | 442,000 RSF | 68,601 RSF | 73,298 RSF | | 90% Leased | 100% Leased | 60% Leased | 41% Leased |

(1)Image represents 3755 Monte Villa Parkway.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	38
New Class A/A+ Development and Redevelopment Properties: Current Projects (continued)
---
December 31, 2023		Property/Market/Submarket				Square Footage						Percentage							Occupancy(1)
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
	Dev/Redev		In Service		CIP		Total		Leased			Leased/Negotiating				Initial			Stabilized
Under construction
2024 stabilization
201 Brookline Avenue/Greater Boston/Fenway		Dev		451,967		58,149		510,116		98	%		98	%				3Q22		2024
840 Winter Street/Greater Boston/Route 128		Redev		28,534		139,680		168,214		100			100					2024		2024
230 Harriet Tubman Way/San Francisco Bay Area/South San Francisco		Dev		—		285,346		285,346		100			100					2024		2024
4155 Campus Point Court/San Diego/University Town Center		Dev		—		171,102		171,102		100			100					2024		2024
1150 Eastlake Avenue East/Seattle/Lake Union		Dev		278,282		33,349		311,631		100			100					4Q23		2024
Alexandria Center® for Advanced Technologies – Monte Villa Parkway/Seattle/Bothell		Redev		311,733		148,890		460,623		90			90					1Q23		2024
9820 Darnestown Road/Maryland/Rockville		Dev		—		250,000		250,000		100			100					2024		2024
9810 Darnestown Road/Maryland/Rockville		Dev		—		192,000		192,000		100			100					2024		2024
9808 Medical Center Drive/Maryland/Rockville		Dev		26,460		68,601		95,061		60			60					3Q23		2024
8800 Technology Forest Place/Texas/Greater Houston		Redev		50,094		73,298		123,392		41			41					2Q23		2024
				1,147,070		1,420,415		2,567,485		93			93
2025 stabilization
99 Coolidge Avenue/Greater Boston/Cambridge/Inner Suburbs		Dev		43,568		277,241		320,809		36			36					4Q23		2025
500 North Beacon Street and 4 Kingsbury Avenue/Greater Boston/<br><br>Cambridge/Inner Suburbs		Dev		—		248,018		248,018		85			85					2024		2025
651 Gateway Boulevard/San Francisco Bay Area/South San Francisco		Redev		—		300,010		300,010		22			22					2024		2025
10075 Barnes Canyon Road/San Diego/Sorrento Mesa		Dev		—		254,771		254,771		12			24					2024		2025
Canada		Redev		77,854		172,936		250,790		73			73					3Q23		2025
				121,422		1,252,976		1,374,398		44			46		(2)
				1,268,492		2,673,391		3,941,883		76			77
2026 and beyond stabilization
401 Park Drive/Greater Boston/Fenway		Redev		—		133,578		133,578		17			17					2024		2026
421 Park Drive/Greater Boston/Fenway		Dev		—		392,011		392,011		13			13					2026		2027
40, 50, and 60 Sylvan Road/Greater Boston/Route 128		Redev		—		576,924		576,924		29			29					2025		2027
Other/Greater Boston		Redev		—		453,869		453,869		—			—					2025		2026
1450 Owens Street/San Francisco Bay Area/Mission Bay		Dev		—		212,796		212,796		—			—		(3)			2025		2026
10935, 10945, and 10955 Alexandria Way/San Diego/Torrey Pines		Dev		—		334,996		334,996		75			75					2025		2026
4135 Campus Point Court/San Diego/University Town Center		Dev		—		426,927		426,927		100			100					2026		2026
				—		2,531,101		2,531,101		36			36		(2)
				1,268,492		5,204,492		6,472,984		61			61
Near-term project expected to commence construction in the next two years
4165 Campus Point Court/San Diego/University Town Center		Dev		—		492,570		492,570		—			51
Total				1,268,492		5,697,062		6,965,554		56	%		60	%
(1)Initial occupancy dates are subject to leasing and/or market conditions. Stabilized occupancy may vary depending on single tenancy versus multi-tenancy. Multi-tenant projects may increase in occupancy over a period of time.<br><br>(2)These projects are focused on demand from our existing tenants in our adjacent properties/campuses and will also address demand from other non-Alexandria properties/campuses.<br><br>(3)Represents a single- or multi-tenant project expanding our existing mega campus, which will be 100% funded by our joint venture partner. We are currently marketing the space for lease and have initial interest from publicly traded biotechnology and institutional tenants.																					Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	39
---	---		New Class A/A+ Development and Redevelopment Properties: Current Projects (continued)
---
December 31, 2023
(Dollars in thousands)
			At 100%											Unlevered Yields
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
Property/Market/Submarket		In Service		CIP		Cost to Complete			Total at<br>Completion			Initial Stabilized					Initial Stabilized (Cash Basis)
Under construction
2024 stabilization
201 Brookline Avenue/Greater Boston/Fenway	%		$	661,831	$	80,604		$	32,565		$	775,000			7.2	%		6.5	%
840 Winter Street/Greater Boston/Route 128	%		13,648		130,274			64,078			208,000				7.5	%		6.5	%
230 Harriet Tubman Way/San Francisco Bay Area/South San Francisco	%		—		237,118			272,882			510,000				7.4	%		6.4	%
4155 Campus Point Court/San Diego/University Town Center	%		—		89,704			83,296			173,000				7.4	%		6.5	%
1150 Eastlake Avenue East/Seattle/Lake Union	%		363,824		33,827			45,349			443,000				6.6	%		6.7	%
Alexandria Center® for Advanced Technologies – Monte Villa Parkway/Seattle/Bothell	%		93,238		104,608			31,154			229,000				6.3	%		6.2	%
9820 Darnestown Road/Maryland/Rockville	%		—		144,388			32,612			177,000				6.3	%		5.6	%
9810 Darnestown Road/Maryland/Rockville	%		—		108,644			24,356			133,000				6.9	%		6.2	%
9808 Medical Center Drive/Maryland/Rockville	%		34,825		54,312			23,863			113,000				5.5	%		5.5	%
8800 Technology Forest Place/Texas/Greater Houston	%		43,529		56,245			12,226			112,000				6.3	%		6.0	%
			1,210,895		1,039,724
2025 stabilization(1)
99 Coolidge Avenue/Greater Boston/Cambridge/Inner Suburbs	%		48,183		245,314			174,503			468,000				7.1	%		7.0	%
500 North Beacon Street and 4 Kingsbury Avenue/Greater Boston/Cambridge/Inner Suburbs	%		—		337,677			89,323			427,000				6.2	%		5.5	%
651 Gateway Boulevard/San Francisco Bay Area/South San Francisco	%		—		306,273			TBD
10075 Barnes Canyon Road/San Diego/Sorrento Mesa	%		—		124,450
Canada	%		29,400		47,974			26,626			104,000				7.0	%		7.0	%
			77,583		1,061,688
2026 and beyond stabilization(1)
401 Park Drive/Greater Boston/Fenway	%		—		140,156			TBD
421 Park Drive/Greater Boston/Fenway	%		—		301,730
40, 50, and 60 Sylvan Road/Greater Boston/Route 128	%		—		397,582
Other/Greater Boston	%		—		136,992
1450 Owens Street/San Francisco Bay Area/Mission Bay	%		—		268,290
10935, 10945, and 10955 Alexandria Way/San Diego/Torrey Pines	%		—		177,828			325,172			503,000				6.2	%		5.8	%
4135 Campus Point Court/San Diego/University Town Center	%		—		137,689			TBD
			—		1,560,267
			1,288,478		3,661,679
Near-term project expected to commence construction in the next two years
4165 Campus Point Court/San Diego/University Town Center	%		—		46,257			TBD
Total			$	1,288,478	$	3,707,936		$	3,970,000	(2)	$	8,960,000	(2)
Our share of investment(3)					$	2,990,000	(2)	$	3,090,000	(2)	$	7,350,000	(2)
(1)We expect to provide total estimated costs and related yields for each project with estimated stabilization in 2025 and beyond over the next several quarters.(2)Amounts are rounded to the nearest 10 million and include preliminary estimated amounts for projects listed as TBD.(3)Represents our share of investment based on our ownership percentages at the completion of development or redevelopment projects.

All values are in US Dollars.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	40
New Class A/A+ Development and Redevelopment Properties: Summary of Pipeline
---
December 31, 2023
(Dollars in thousands)
Market<br><br>Property/Submarket	Our Ownership Interest			Book Value			Square Footage
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
			Development and Redevelopment
			Active and Near-Term Construction					Future Opportunities Subject to <br>Market Conditions and Leasing
			Under Construction			Committed Near Term		Priority Anticipated		Future		Total(1)
Greater Boston
99 Coolidge Avenue/Cambridge/Inner Suburbs	75.0	%		$	245,314		277,241		—		—		—	277,241
Mega Campus: The Arsenal on the Charles/Cambridge/Inner Suburbs	100	%		348,919			248,018		—		333,758		34,157	615,933
311 Arsenal Street, 500 North Beacon Street, and 4 Kingsbury Avenue
Mega Campus: Alexandria Center® for Life Science – Fenway/Fenway	(2)			522,490			583,738		—		—		—	583,738
201 Brookline Avenue and 401 and 421 Park Drive
Mega Campus: Alexandria Center® for Life Science – Waltham/Route 128	100	%		588,757			716,604		—		—		515,000	1,231,604
40, 50, and 60 Sylvan Road, 35 Gatehouse Drive, and 840 Winter Street
Mega Campus: Alexandria Center® at Kendall Square/Cambridge	100	%		115,187			—		—		—		216,455	216,455
100 Edwin H. Land Boulevard
Mega Campus: Alexandria Technology Square®/Cambridge	100	%		7,881			—		—		—		100,000	100,000
Mega Campus: 480 Arsenal Way and 446, 458, 500, and 550 Arsenal Street/Cambridge/Inner Suburbs	100	%		83,175			—		—		—		902,000	902,000
446, 458, 500, and 550 Arsenal Street
10 Necco Street/Seaport Innovation District	100	%		103,531			—		—		—		175,000	175,000
Mega Campus: One Moderna Way/Route 128	100	%		26,182			—		—		—		1,100,000	1,100,000
215 Presidential Way/Route 128	100	%		6,816			—		—		—		112,000	112,000
Other value-creation projects	(3)			286,099			453,869		—		—		1,323,541	1,777,410
				$	2,334,351		2,279,470		—		333,758		4,478,153	7,091,381
Refer to “Mega campus” in the “Definitions and reconciliations” of this Supplemental Information for additional details.<br><br><br><br>(1)Represents total square footage upon completion of development or redevelopment of one or more new Class A/A+ properties. Square footage presented includes RSF of buildings currently in operation at properties that also have inherent future development or redevelopment opportunities. Upon expiration of existing in-place leases, we have the intent to demolish or redevelop the existing property. Refer to “Investments in real estate” in the “Definitions and reconciliations” of this Supplemental Information for additional details on value-creation square feet currently included in rental properties.<br><br>(2)We have a 99.0% interest in 201 Brookline Avenue aggregating 58,149 RSF, a 100% interest in 401 Park Drive aggregating 133,578 RSF, and a 99.6% interest in 421 Park Drive aggregating 392,011 RSF.<br><br>(3)Includes a property in which we own a partial interest through a real estate joint venture. Refer to “Joint venture financial information” of this Supplemental Information for additional details.
Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	41
---	---
New Class A/A+ Development and Redevelopment Properties: Summary of Pipeline (continued)
---
December 31, 2023
(Dollars in thousands)
Market<br><br>Property/Submarket	Our Ownership Interest			Book Value			Square Footage
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
			Development and Redevelopment
			Active and Near-Term Construction					Future Opportunities Subject to <br>Market Conditions and Leasing
			Under Construction			Committed Near Term		Priority Anticipated		Future		Total(1)
San Francisco Bay Area
Mega Campus: Alexandria Center® for Science and Technology – Mission Bay/Mission Bay	40.6	%		$	268,290		212,796		—		—		—		212,796
1450 Owens Street
Mega Campus: Alexandria Technology Center® – Gateway/<br><br>South San Francisco	50.0	%		332,447			300,010		—		—		291,000		591,010
651 Gateway Boulevard
Alexandria Center® for Life Science – Millbrae/South San Francisco	47.1	%		388,202			285,346		—		198,188		150,213		633,747
230 Harriet Tubman Way, 201 and 231 Adrian Road, and 6 and 30 Rollins Road
Mega Campus: Alexandria Center® for Advanced Technologies – South San Francisco/South San Francisco	100	%		6,655			—		—		107,250		90,000		197,250
211(2) and 269 East Grand Avenue
Mega Campus: Alexandria Center® for Life Science – San Carlos/Greater Stanford	100	%		423,593			—		—		105,000		1,392,830		1,497,830
960 Industrial Road, 987 and 1075 Commercial Street, and 888 Bransten Road
Mega Campus: Alexandria Center® for Advanced Technologies – Tanforan/South San Francisco	100	%		377,159			—		—		—		1,930,000		1,930,000
1122, 1150, and 1178 El Camino Real
3825 and 3875 Fabian Way/Greater Stanford	100	%		147,079			—		—		—		478,000		478,000
2100, 2200, 2300, and 2400 Geng Road/Greater Stanford	100	%		—			—		—		—		240,000		240,000
901 California Avenue/Greater Stanford	100	%		16,419			—		—		—		56,924		56,924
Mega Campus: 88 Bluxome Street/SoMa	100	%		378,835			—		—		—		1,070,925		1,070,925
Other value-creation projects	100	%		—			—		—		—		25,000		25,000
				2,338,679			798,152		—		410,438		5,724,892		6,933,482
New York City
Mega Campus: Alexandria Center® for Life Science – New York City/New York City	100	%		151,846			—		—		—		550,000	(3)	550,000
				$	151,846		—		—		—		550,000		550,000
Refer to “Mega campus” in the “Definitions and reconciliations” of this Supplemental Information for additional details.<br><br><br><br>(1)Represents total square footage upon completion of development or redevelopment of one or more new Class A/A+ properties. Square footage presented includes RSF of buildings currently in operation at properties that also have inherent future development or redevelopment opportunities. Upon expiration of existing in-place leases, we have the intent to demolish or redevelop the existing property. Refer to “Investments in real estate” in the “Definitions and reconciliations” of this Supplemental Information for additional details on value-creation square feet currently included in rental properties.<br><br>(2)Includes a property in which we own a partial interest through a real estate joint venture. Refer to “Joint venture financial information” of this Supplemental Information for additional details.<br><br>(3)Pursuant to an option agreement, we are currently negotiating a long-term ground lease with the City of New York for the future site of a new building aggregating approximately 550,000 SF.																	Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	42
---	---
New Class A/A+ Development and Redevelopment Properties: Summary of Pipeline (continued)
---
December 31, 2023
(Dollars in thousands)
Market<br><br>Property/Submarket	Our Ownership Interest			Book Value			Square Footage
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
			Development and Redevelopment
			Active and Near-Term Construction					Future Opportunities Subject to <br>Market Conditions and Leasing
			Under Construction			Committed Near Term		Priority Anticipated		Future		Total(1)
San Diego
Mega Campus: One Alexandria Square/Torrey Pines	100	%		$	232,897		334,996		—		—		125,280	460,276
10935, 10945, and 10955 Alexandria Way and 10975 and 10995 Torreyana Road
Mega Campus: Campus Point by Alexandria/University Town Center	55.0	%		419,857			598,029		492,570		—		650,000	1,740,599
10010(2), 10140(2), and 10260 Campus Point Drive and 4135, 4155, 4161, 4165, and 4275(2) Campus Point Court
Mega Campus: SD Tech by Alexandria/Sorrento Mesa	50.0	%		241,448			254,771		—		—		493,845	748,616
9805 Scranton Road and 10065 and 10075 Barnes Canyon Road
11255 and 11355 North Torrey Pines Road/Torrey Pines	100	%		143,262			—		—		309,094		—	309,094
Scripps Science Park by Alexandria/Sorrento Mesa	100	%		114,859			—		—		105,000		493,349	598,349
10048, 10219, 10256, and 10260 Meanley Drive and 10277 Scripps Ranch Boulevard
Costa Verde by Alexandria/University Town Center	100	%		131,264			—		—		—		537,000	537,000
8410-8750 Genesee Avenue and 4282 Esplanade Court
Mega Campus: 5200 Illumina Way/University Town Center	51.0	%		17,461			—		—		—		451,832	451,832
ARE Towne Centre/University Town Center	100	%		26,503			—		—		—		400,000	400,000
9363, 9373, and 9393 Towne Centre Drive
9625 Towne Centre Drive/University Town Center	30.0	%		837			—		—		—		100,000	100,000
Mega Campus: Sequence District by Alexandria/Sorrento Mesa	100	%		45,889			—		—		—		1,798,915	1,798,915
6260, 6290, 6310, 6340, 6350, and 6450 Sequence Drive
Pacific Technology Park/Sorrento Mesa	50.0	%		23,514			—		—		—		149,000	149,000
9444 Waples Street
4025, 4031, 4045, and 4075 Sorrento Valley Boulevard/Sorrento Valley	100	%		39,707			—		—		—		247,000	247,000
Other value-creation projects	100	%		72,465			—		—		—		475,000	475,000
				$	1,509,963		1,187,796		492,570		414,094		5,921,221	8,015,681
Refer to “Mega campus” in the “Definitions and reconciliations” of this Supplemental Information for additional details.<br><br><br><br>(1)Represents total square footage upon completion of development or redevelopment of one or more new Class A/A+ properties. Square footage presented includes RSF of buildings currently in operation at properties that also have inherent future development or redevelopment opportunities. Upon expiration of existing in-place leases, we have the intent to demolish or redevelop the existing property. Refer to “Investments in real estate” in the “Definitions and reconciliations” of this Supplemental Information for additional details on value-creation square feet currently included in rental properties.<br><br>(2)We have a 100% interest in this property.																Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	43
---	---
New Class A/A+ Development and Redevelopment Properties: Summary of Pipeline (continued)
---
December 31, 2023
(Dollars in thousands)
Market<br><br>Property/Submarket	Our Ownership Interest			Book Value			Square Footage
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
			Development and Redevelopment
			Active and Near-Term Construction					Future Opportunities Subject to <br>Market Conditions and Leasing
			Under Construction			Committed Near Term		Priority Anticipated		Future		Total(1)
Seattle
Mega Campus: The Eastlake Life Science Campus by Alexandria/Lake Union	100	%		$	33,827		33,349		—		—		—	33,349
1150 Eastlake Avenue East
Alexandria Center® for Advanced Technologies – Monte Villa Parkway/Bothell	100	%		104,608			148,890		—		50,552		—	199,442
3301, 3555, and 3755 Monte Villa Parkway
Mega Campus: Alexandria Center® for Life Science – South Lake Union/Lake Union	(2)			432,644			—		—		1,095,586		188,400	1,283,986
601 and 701 Dexter Avenue North and 800 Mercer Street
830 and 1010 4th Avenue South/SoDo	100	%		57,159			—		—		—		597,313	597,313
Mega Campus: Alexandria Center® for Advanced Technologies – Canyon Park/Bothell	100	%		15,975			—		—		—		230,000	230,000
21660 20th Avenue Southeast
Other value-creation projects	100	%		99,744			—		—		—		691,000	691,000
				743,957			182,239		—		1,146,138		1,706,713	3,035,090
Maryland
Mega Campus: Alexandria Center® for Life Science – Shady Grove/Rockville	100	%		327,940			510,601		—		—		296,000	806,601
9808 Medical Center Drive and 9810, 9820, and 9830 Darnestown Road
				$	327,940		510,601		—		—		296,000	806,601
Refer to “Mega campus” in the “Definitions and reconciliations” of this Supplemental Information for additional details.<br><br><br><br>(1)Represents total square footage upon completion of development or redevelopment of one or more new Class A/A+ properties. Square footage presented includes RSF of buildings currently in operation at properties that also have inherent future development or redevelopment opportunities. Upon expiration of existing in-place leases, we have the intent to demolish or redevelop the existing property. Refer to “Investments in real estate” in the “Definitions and reconciliations” of this Supplemental Information for additional details on value-creation square feet currently included in rental properties.<br><br>(2)We have a 100% interest in 601 and 701 Dexter Avenue North aggregating 414,986 SF and a 60% interest in the priority anticipated development project at 800 Mercer Street aggregating 869,000 SF.																Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	44
---	---
New Class A/A+ Development and Redevelopment Properties: Summary of Pipeline (continued)
---
December 31, 2023
(Dollars in thousands)
Market<br><br>Property/Submarket	Our Ownership Interest			Book Value			Square Footage
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
			Development and Redevelopment
			Active and Near-Term Construction					Future Opportunities Subject to <br>Market Conditions and Leasing
			Under Construction			Committed Near Term		Priority Anticipated		Future		Total(1)
Research Triangle
Mega Campus: Alexandria Center® for Advanced Technologies – Research Triangle/Research Triangle	100	%		$	96,835		—		—		180,000		990,000	1,170,000
4 and 12 Davis Drive
Mega Campus: Alexandria Center® for NextGen Medicines/<br><br>Research Triangle	100	%		104,542			—		—		100,000		955,000	1,055,000
3029 East Cornwallis Road
Mega Campus: Alexandria Center® for Life Science – Durham/Research Triangle	100	%		173,864			—		—		—		2,210,000	2,210,000
41 Moore Drive
Mega Campus: Alexandria Center® for Sustainable Technologies/Research Triangle	100	%		52,601			—		—		—		750,000	750,000
120 TW Alexander Drive, 2752 East NC Highway 54, and 10 South Triangle Drive/Research Triangle
100 Capitola Drive/Research Triangle	100	%		—			—		—		—		65,965	65,965
Other value-creation projects	100	%		4,185			—		—		—		76,262	76,262
				432,027			—		—		280,000		5,047,227	5,327,227
Texas
Alexandria Center® for Advanced Technologies at The Woodlands/Greater Houston	100	%		75,748			73,298		—		—		116,405	189,703
8800 Technology Forest Place
1001 Trinity Street and 1020 Red River Street/Austin	100	%		9,327			—		—		126,034		123,976	250,010
Other value-creation projects	100	%		133,865			—		—		—		1,694,000	1,694,000
				218,940			73,298		—		126,034		1,934,381	2,133,713
Canada	100	%		47,974			172,936		—		—		371,743	544,679
Other value-creation projects	100	%		114,995			—		—		—		724,349	724,349
Total pipeline as of December 31, 2023, excluding properties held for sale				8,220,672		(2)	5,204,492		492,570		2,710,462		26,754,679	35,162,203
Properties held for sale				5,637			—		—		—		235,000	235,000
Total pipeline as of December 31, 2023				$	8,226,309		5,204,492		492,570		2,710,462		26,989,679	35,397,203

Refer to “Mega campus” in the “Definitions and reconciliations” of this Supplemental Information for additional details.

(1)Total square footage includes 3,888,891 RSF of buildings currently in operation that we intend to demolish or redevelop and commence future construction. Refer to “Investments in real estate” in the “Definitions and reconciliations” of this Supplemental Information for additional details on value-creation square feet currently included in rental properties.

(2)Total book value includes $3.7 billion of projects currently under construction that are 61% leased. We also expect to commence construction on one near-term project aggregating $46.3 million, which is 51% leased/negotiating, in the next two years after December 31, 2023.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	45
Construction Spending and Capitalization of Interest
---
December 31, 2023
(Dollars in thousands)

66% of Our Value-Creation Pipeline RSF Is Within Our Mega Campuses

	Upon Completion of Construction
	RSF	Potential Growth in Operating RSF
Under construction and committed near-term projects(1)	5,697,062	76%
Future opportunities subject to market conditions and leasing	29,465,141
Value-creation pipeline: developments and redevelopments	35,162,203
Key Categories of Interest Capitalized During 2023	Percentage of Total<br>Capitalized Interest
---	---	---	---
Construction of Class A/A+ properties:
Active construction projects
Under construction and committed near-term projects(1)		41	%
Future pipeline pre-construction
Primarily mega campus expansion pre-construction work (entitlement, design, and site work)		46
Smaller redevelopments and repositioning capital projects		13
		100	%
	Year Ended December 31, 2023		Projected Midpoint for the Year Ending December 31, 2024
---	---	---	---	---
Construction Spending
Construction of Class A/A+ properties:
Active construction projects
Under construction and committed near-term projects(1) and four projects expected to commence active construction in 2024	$	2,672,376
Future pipeline pre-construction
Primarily mega campus expansion pre-construction work (entitlement, design, and site work)		581,535
Revenue- and non-revenue-enhancing capital expenditures		260,392
Construction spend (before contributions from noncontrolling interests)(2)		3,514,303
Contributions from noncontrolling interests (consolidated real estate joint ventures)		(479,698)		(3)
Total construction spending	$	3,034,605
2024 Guidance range			1,950,000 – 2,550,000

All values are in US Dollars.

Contributions From Partners in Our Existing Consolidated Real Estate Joint Ventures
Projected Timing	Amount(4)
2024	$	430,000
2025–2027	816,000
Total	$	1,246,000

(1)Includes projects under construction aggregating 5.2 million RSF and one near-term project aggregating 493 thousand RSF expected to commence construction during the next two years after December 31, 2023, which are 60% leased/negotiating and are expected to generate $495 million in annual incremental net operating income primarily commencing from 1Q24 through 4Q27.

(2)Includes our contributions in unconsolidated real estate joint ventures related to construction.

(3)Amount represents the portion of contractual funding commitments expected to be received from our existing consolidated real estate joint ventures during the next 12 months.

(4)Amounts represent reductions to our consolidated construction spending.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	46
Joint Venture Financial Information
---
December 31, 2023		Consolidated Real Estate Joint Ventures
---	---	---	---	---	---	---	---	---
Property	Market	Submarket	Noncontrolling<br><br>Interest Share(1)			Operating RSF<br><br>at 100%
50 and 60 Binney Street	Greater Boston	Cambridge/Inner Suburbs		66.0%			532,395
75/125 Binney Street	Greater Boston	Cambridge/Inner Suburbs		60.0%			388,270
100 and 225 Binney Street and 300 Third Street	Greater Boston	Cambridge/Inner Suburbs		70.0%			870,106
99 Coolidge Avenue	Greater Boston	Cambridge/Inner Suburbs		25.0%			43,568	(2)
15 Necco Street	Greater Boston	Seaport Innovation District		43.3%			345,996
Other joint venture	Greater Boston	–		38.8%			—	(2)
Alexandria Center® for Science and Technology – Mission Bay(3)	San Francisco Bay Area	Mission Bay		75.0%			1,003,603
1450 Owens Street	San Francisco Bay Area	Mission Bay		59.4%	(4)		—	(2)
601, 611, 651(2), 681, 685, and 701 Gateway Boulevard	San Francisco Bay Area	South San Francisco		50.0%			786,549
751 Gateway Boulevard	San Francisco Bay Area	South San Francisco		49.0%			230,592
211(2) and 213 East Grand Avenue	San Francisco Bay Area	South San Francisco		70.0%			300,930
500 Forbes Boulevard	San Francisco Bay Area	South San Francisco		90.0%			155,685
Alexandria Center® for Life Science – Millbrae	San Francisco Bay Area	South San Francisco		52.9%			—	(2)
3215 Merryfield Row	San Diego	Torrey Pines		70.0%			170,523
Campus Point by Alexandria(5)	San Diego	University Town Center		45.0%			1,342,164
5200 Illumina Way	San Diego	University Town Center		49.0%			792,687
9625 Towne Centre Drive	San Diego	University Town Center		70.0%			163,648
SD Tech by Alexandria(6)	San Diego	Sorrento Mesa		50.0%			881,930
Pacific Technology Park	San Diego	Sorrento Mesa		50.0%			544,352
Summers Ridge Science Park(7)	San Diego	Sorrento Mesa		70.0%			316,531
1201 and 1208 Eastlake Avenue East and 199 East Blaine Street	Seattle	Lake Union		70.0%			321,115
400 Dexter Avenue North	Seattle	Lake Union		70.0%			290,754
800 Mercer Street	Seattle	Lake Union		40.0%			—	(2)
Unconsolidated Real Estate Joint Ventures
Property	Market	Submarket	Our Ownership Share(8)			Operating RSF<br><br>at 100%
1655 and 1725 Third Street	San Francisco Bay Area	Mission Bay		10.0%			586,208
1401/1413 Research Boulevard	Maryland	Rockville		65.0%	(9)		(10)
1450 Research Boulevard	Maryland	Rockville		73.2%	(9)		42,679
101 West Dickman Street	Maryland	Beltsville		57.9%	(9)		135,423

(1)In addition to the consolidated real estate joint ventures listed, various joint venture partners hold insignificant noncontrolling interests in three other real estate joint ventures in North America.

(2)Represents a property currently under construction or in our value-creation pipeline. Refer to the sections under “New Class A/A+ development and redevelopment properties” for additional details.

(3)Includes 409 and 499 Illinois Street, 1500 and 1700 Owens Street, and 455 Mission Bay Boulevard South.

(4)The noncontrolling interest share of our joint venture partner is anticipated to increase to 75% as our partner contributes construction funding to the project over time.

(5)Includes 10210, 10260, 10290, and 10300 Campus Point Drive and 4110, 4135, 4155, 4161, 4165, 4224, and 4242 Campus Point Court.

(6)Includes 9605, 9645, 9675, 9685, 9725, 9735, 9805, 9808, 9855, and 9868 Scranton Road and 10055, 10065, and 10075 Barnes Canyon Road.

(7)Includes 9965, 9975, 9985, and 9995 Summers Ridge Road.

(8)In addition to the unconsolidated real estate joint ventures listed, we hold an interest in one other insignificant unconsolidated real estate joint venture in North America.

(9)Represents a joint venture with a local real estate operator in which our joint venture partner manages the day-to-day activities that significantly affect the economic performance of the joint venture.

(10)Represents a joint venture with a distinguished retail real estate developer for a retail shopping center aggregating 84,837 RSF.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	47
Joint Venture Financial Information (continued)
---
December 31, 2023
(In thousands)
		As of December 31, 2023
---	---	---	---	---
	Noncontrolling Interest <br>Share of Consolidated <br>Real Estate JVs		Our Share of <br>Unconsolidated Real <br>Estate JVs
Investments in real estate	$	3,937,012	$	123,220
Cash, cash equivalents, and restricted cash		149,715		3,552
Other assets		405,012		12,285
Secured notes payable (refer to page 53)		(29,761)		(92,982)
Other liabilities		(274,910)		(8,295)
Mandatorily redeemable noncontrolling interest(1)		(35,250)		—
Redeemable noncontrolling interests		(16,480)		—
	$	4,135,338	$	37,780
	Noncontrolling Interest Share of <br>Consolidated Real Estate JVs				Our Share of Unconsolidated Real Estate JVs
---	---	---	---	---	---	---	---	---
	December 31, 2023				December 31, 2023
	Three Months Ended		Year Ended		Three Months Ended		Year Ended
Total revenues	$	110,156	$	419,078	$	3,129	$	11,365
Rental operations		(32,622)		(123,896)		(887)		(3,259)
		77,534		295,182		2,242		8,106
General and administrative		(1,803)		(3,244)		(15)		(86)
Interest		(24)		(39)		(899)		(3,451)
Depreciation and amortization of real estate assets		(30,137)		(115,349)		(965)		(3,589)
Fixed returns allocated to redeemable noncontrolling interests(2)		201		805		—		—
	$	45,771	$	177,355	$	363	$	980
Straight-line rent and below-market lease revenue	$	7,414	$	20,402	$	427	$	1,339
Funds from operations(3)	$	75,908	$	292,704	$	1,328	$	4,569

(1)Related to the acquisition of our partner’s partial noncontrolling interest in one of our real estate joint ventures, which was paid in full in January 2024.

(2)Represents an allocation of joint venture earnings to redeemable noncontrolling interests primarily in one property in our South San Francisco submarket. These redeemable noncontrolling interests earn a fixed return on their investment rather than participate in the operating results of the property.

(3)Refer to “Funds from operations and funds from operations per share” in our Earnings Press Release and “Funds from operations and funds from operations, as adjusted, attributable to Alexandria’s common stockholders” in the “Definitions and reconciliations” of this Supplemental Information for the definition and its reconciliation from the most directly comparable financial measure presented in accordance with GAAP.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	48
Investments
---
December 31, 2023
(Dollars in thousands)

We hold investments in publicly traded companies and privately held entities primarily involved in the life science, agtech, and technology industries. The tables below summarize components of our investment income (loss) and non-real estate investments (in thousands). For additional details, refer to “Investments” in the “Definitions and reconciliations” of this Supplemental Information.

	December 31, 2023						Year Ended December 31, 2022
	Three Months Ended			Year Ended
Realized (losses) gains	$	(10,825)	(1)	$	6,078	(1)	$	80,435
Unrealized gains (losses)	19,479		(2)	(201,475)		(2)	(412,193)		(3)
Investment income (loss)	$	8,654		$	(195,397)		$	(331,758)
	December 31, 2023									December 31, 2022
---	---	---	---	---	---	---	---	---	---	---	---
Investments	Cost			Unrealized Gains		Unrealized Losses		Carrying Amount		Carrying Amount
Publicly traded companies	$	203,467		$	50,377	$	(94,278)	$	159,566	$	207,139
Entities that report NAV	507,059			192,468		(27,995)		671,532		759,752
Entities that do not report NAV:
Entities with observable price changes	97,892			77,600		(1,224)		174,268		193,784
Entities without observable price changes	368,654			—		—		368,654		388,940
Investments accounted for under the equity method	N/A			N/A		N/A		75,498		65,459
December 31, 2023	$	1,177,072	(4)	$	320,445	$	(123,497)	$	1,449,518	$	1,615,074
December 31, 2022	$	1,152,613		$	506,404	$	(109,402)	$	1,615,074			Public/Private Mix (Cost)	Tenant/Non-Tenant Mix (Cost)
---	---

(1)Consists of realized gains of $12.3 million and $80.6 million, offset by impairment charges of $23.1 million and $74.6 million during the three months and year ended December 31, 2023, respectively.

(2)Consists of unrealized gains of $34.3 million primarily resulting from the increase in valuation in publicly traded entities during the three months ended December 31, 2023 and unrealized losses of $111.6 million primarily resulting from the decrease in the fair value of our investments in privately held entities that report NAV during the year ended December 31, 2023 and $14.8 million and $89.9 million of accounting reclassifications of unrealized gains recognized in prior periods into realized gains upon our sales of investments during the three months and year ended December 31, 2023, respectively.

(3)Consists of unrealized losses of $274.2 million primarily resulting from the decrease in the fair value of our investments in publicly traded companies and $138.0 million of accounting reclassifications of unrealized gains recognized in prior periods into realized gains upon our sales of investments during the year ended December 31, 2022.

(4)Represents 2.8% of gross assets as of December 31, 2023.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	49
Key Credit Metrics
---
December 31, 2023
Liquidity		Minimal Outstanding Borrowings and Significant Availability on Unsecured Senior Line of Credit
---	---	---
		(in millions)
5.8B
(in millions)
Availability under our unsecured senior line of credit, net of amounts outstanding under our commercial paper program	4,900
Cash, cash equivalents, and restricted cash
Remaining construction loan commitments
Investments in publicly traded companies
Liquidity as of December 31, 2023	5,797
Net Debt and Preferred Stock to Adjusted EBITDA(1)		Fixed-Charge Coverage Ratio(1)

All values are in US Dollars.

(1)Quarter annualized. Refer to “Fixed-charge coverage ratio” and “Net debt and preferred stock to Adjusted EBITDA” in the “Definitions and reconciliations” of this Supplemental Information for additional details.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	50
Summary of Debt
---
December 31, 2023
(In millions)

Weighted-Average Remaining Term of 12.8 Years

(1)Refer to footnotes 2 through 4 on the next page under “Fixed-rate and variable-rate debt” for additional details.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	51
Summary of Debt (continued)
---
December 31, 2023
(Dollars in thousands)
Fixed-rate and variable-rate debt	Fixed-Rate<br>Debt			Variable-Rate Debt			Total				Percentage			Weighted-Average
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
										Interest Rate(1)			Remaining Term<br>(in years)
Secured notes payable	$	619		$	119,043		$	119,662			1.1	%		8.37	%	2.9
Unsecured senior notes payable	11,096,028			—			11,096,028				98.0			3.65		13.0
Unsecured senior line of credit(2) and commercial paper program(3)	—			99,952			99,952				0.9			5.76		4.1	(4)
Total/weighted average	$	11,096,647		$	218,995		$	11,315,642			100.0	%		3.72	%	12.8	(4)
Percentage of total debt	98.1		%	1.9		%	100.0		%

(1)Represents the weighted-average interest rate as of the end of the applicable period, including expense/income related to the amortization of loan fees, amortization of debt premiums (discounts), and other bank fees.

(2)As of December 31, 2023, we had no outstanding balance on our unsecured senior line of credit.

(3)The commercial paper program provides us with the ability to issue up to $2.5 billion of commercial paper notes that bear interest at short-term fixed rates and can generally be issued with a maturity of 30 days or less and with a maximum maturity of 397 days from the date of issuance. Borrowings under the program are used to fund short-term capital needs and are backed by our unsecured senior line of credit. In the event we are unable to issue commercial paper notes or refinance outstanding borrowings under terms equal to or more favorable than those under our unsecured senior line of credit, we expect to borrow under the unsecured senior line of credit at SOFR+0.835%. As of December 31, 2023, we had $100.0 million of commercial paper notes outstanding.

(4)We calculate the weighted-average remaining term of our commercial paper notes by using the maturity date of our unsecured senior line of credit. Using the maturity date of our outstanding commercial paper notes, the consolidated weighted-average maturity of our debt is 12.7 years. The commercial paper notes sold during the year ended December 31, 2023 were issued at a weighted-average yield to maturity of 5.55% and had a weighted-average maturity term of 11 days.

Average debt outstanding and weighted-average interest rate	Average Debt Outstanding				Weighted-Average Interest Rate
	December 31, 2023				December 31, 2023
	Three Months Ended		Year Ended		Three Months Ended		Year Ended
Long-term fixed-rate debt	$	11,159,811	$	11,044,128	3.64	%	3.62	%
Short-term variable-rate unsecured senior line of credit and commercial paper program debt	909,703		293,690		5.84		5.77
Blended average interest rate	12,069,514		11,337,818		3.81		3.68
Loan fee amortization and annual facility fee related to unsecured senior line of credit	N/A		N/A		0.11		0.11
Total/weighted average	$	12,069,514	$	11,337,818	3.92	%	3.79	%
Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	52
---	---
Summary of Debt (continued)
---
December 31, 2023
(Dollars in thousands)
Debt covenants	Unsecured Senior Notes Payable		Unsecured Senior Line of Credit
---	---	---	---	---
Debt Covenant Ratios(1)	Requirement	December 31, 2023	Requirement	December 31, 2023
Total Debt to Total Assets	≤ 60%	28%	≤ 60.0%	27.0%
Secured Debt to Total Assets	≤ 40%	0.3%	≤ 45.0%	0.2%
Consolidated EBITDA to Interest Expense	≥ 1.5x	15.3x	≥ 1.50x	4.13x
Unencumbered Total Asset Value to Unsecured Debt	≥ 150%	346%	N/A	N/A
Unsecured Interest Coverage Ratio	N/A	N/A	≥ 1.75x	28.55x

(1)All covenant ratio titles utilize terms as defined in the respective debt and credit agreements. The calculation of consolidated EBITDA is based on the definitions contained in our loan agreements and is not directly comparable to the computation of EBITDA as described in Exchange Act Release No. 47226.

Unconsolidated real estate joint ventures’ debt						At 100%
Unconsolidated Joint Venture	Maturity Date	Stated Rate		Interest Rate(1)		Aggregate Commitment		Debt Balance(2)		Our Share
1401/1413 Research Boulevard	12/23/24	2.70%			3.31%	$	28,500	$	28,331	65.0%
1655 and 1725 Third Street	3/10/25	4.50%			4.57%	600,000		599,505		10.0%
101 West Dickman Street	11/10/26	SOFR+1.95%	(3)		7.38%	26,750		14,762		57.9%
1450 Research Boulevard	12/10/26	SOFR+1.95%	(3)		7.44%	13,000		8,280		73.2%
						$	668,250	$	650,878

(1)Includes interest expense and amortization of loan fees.

(2)Represents outstanding principal, net of unamortized deferred financing costs, as of December 31, 2023.

(3)This loan is subject to a fixed SOFR floor of 0.75%.

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	53
Summary of Debt (continued)
---
December 31, 2023
(Dollars in thousands)
Debt	Stated <br>Rate		Interest<br><br>Rate(1)			Maturity<br><br>Date(2)			Principal Payments Remaining for the Periods Ending December 31,													Principal		Unamortized (Deferred Financing Cost), (Discount)/Premium		Total
---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
					2024		2025			2026		2027		2028		Thereafter
Secured notes payable
Greater Boston(3)	SOFR+2.70	%	8.38	%		11/19/26			$	—	$	—	$	119,674	$	—	$	—	$	—		$	119,674	$	(631)	$	119,043
San Francisco Bay Area	6.50	%	6.50			7/1/36			32		34		36		38		41		438			619		—		619
Secured debt weighted-average interest rate/subtotal			8.37						32		34		119,710		38		41		438			120,293		(631)		119,662
Unsecured senior line of credit and commercial paper program(4)	(4)		5.76		(4)	1/22/28		(4)	(4)		—		—		—		100,000		—		(4)	100,000		(48)		99,952
Unsecured senior notes payable	3.45	%	3.62			4/30/25			—		600,000		—		—		—		—			600,000		(1,181)		598,819
Unsecured senior notes payable	4.30	%	4.50			1/15/26			—		—		300,000		—		—		—			300,000		(1,022)		298,978
Unsecured senior notes payable	3.80	%	3.96			4/15/26			—		—		350,000		—		—		—			350,000		(1,143)		348,857
Unsecured senior notes payable	3.95	%	4.13			1/15/27			—		—		—		350,000		—		—			350,000		(1,574)		348,426
Unsecured senior notes payable	3.95	%	4.07			1/15/28			—		—		—		—		425,000		—			425,000		(1,733)		423,267
Unsecured senior notes payable	4.50	%	4.60			7/30/29			—		—		—		—		—		300,000			300,000		(1,248)		298,752
Unsecured senior notes payable	2.75	%	2.87			12/15/29			—		—		—		—		—		400,000			400,000		(2,473)		397,527
Unsecured senior notes payable	4.70	%	4.81			7/1/30			—		—		—		—		—		450,000			450,000		(2,425)		447,575
Unsecured senior notes payable	4.90	%	5.05			12/15/30			—		—		—		—		—		700,000			700,000		(5,511)		694,489
Unsecured senior notes payable	3.375	%	3.48			8/15/31			—		—		—		—		—		750,000			750,000		(4,990)		745,010
Unsecured senior notes payable	2.00	%	2.12			5/18/32			—		—		—		—		—		900,000			900,000		(7,887)		892,113
Unsecured senior notes payable	1.875	%	1.97			2/1/33			—		—		—		—		—		1,000,000			1,000,000		(7,976)		992,024
Unsecured senior notes payable	2.95	%	3.07			3/15/34			—		—		—		—		—		800,000			800,000		(7,989)		792,011
Unsecured senior notes payable	4.75	%	4.88			4/15/35			—		—		—		—		—		500,000			500,000		(5,411)		494,589
Unsecured senior notes payable	4.85	%	4.93			4/15/49			—		—		—		—		—		300,000			300,000		(2,987)		297,013
Unsecured senior notes payable	4.00	%	3.91			2/1/50			—		—		—		—		—		700,000			700,000		10,111		710,111
Unsecured senior notes payable	3.00	%	3.08			5/18/51			—		—		—		—		—		850,000			850,000		(11,608)		838,392
Unsecured senior notes payable	3.55	%	3.63			3/15/52			—		—		—		—		—		1,000,000			1,000,000		(14,112)		985,888
Unsecured senior notes payable	5.15	%	5.26			4/15/53			—		—		—		—		—		500,000			500,000		(7,813)		492,187
Unsecured debt weighted-average interest rate/subtotal			3.67						—		600,000		650,000		350,000		525,000		9,150,000			11,275,000		(79,020)		11,195,980
Weighted-average interest rate/total			3.72	%					$	32	$	600,034	$	769,710	$	350,038	$	525,041	$	9,150,438		$	11,395,293	$	(79,651)	$	11,315,642
Balloon payments									$	—	$	600,000	$	769,674	$	350,000	$	525,000	$	9,150,068		$	11,394,742	$	—	$	11,394,742
Principal amortization									32		34		36		38		41		370			551		(79,651)		(79,100)
Total debt									$	32	$	600,034	$	769,710	$	350,038	$	525,041	$	9,150,438		$	11,395,293	$	(79,651)	$	11,315,642
Fixed-rate debt									$	32	$	600,034	$	650,036	$	350,038	$	425,041	$	9,150,438		$	11,175,619	$	(78,972)	$	11,096,647
Variable-rate debt									—		—		119,674		—		100,000		—			219,674		(679)		218,995
Total debt									$	32	$	600,034	$	769,710	$	350,038	$	525,041	$	9,150,438		$	11,395,293	$	(79,651)	$	11,315,642
Weighted-average stated rate on maturing debt									N/A		3.45%		3.82%		3.95%		4.29%		3.48%

(1)Represents the weighted-average interest rate as of the end of the applicable period, including amortization of loan fees, amortization of debt premiums (discounts), and other bank fees.

(2)Reflects any extension options that we control.

(3)Represents a secured construction loan held by our consolidated real estate joint venture at 99 Coolidge Avenue, of which we own a 75.0% interest. As of December 31, 2023, this joint venture has $75.6 million available under existing lender commitments. The interest rate shall be reduced from SOFR+2.70% to SOFR+2.10% over time upon the completion of certain leasing, construction, and financial covenant milestones.

(4)Refer to footnotes 2 through 4 under the “Fixed-rate and variable-rate debt” subsection of this “Summary of Debt.”

Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024	54
Definitions and Reconciliations
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December 31, 2023

This section contains additional details for sections throughout this Supplemental Information and the accompanying Earnings Press Release, as well as explanations and reconciliations of certain non-GAAP financial measures and the reasons why we use these supplemental measures of performance and believe they provide useful information to investors. Additional detail can be found in our most recent annual report on Form 10-K and subsequent quarterly reports on Form 10-Q, as well as other documents filed with or furnished to the SEC from time to time.

Adjusted EBITDA and Adjusted EBITDA margin

The following table reconciles net income (loss), the most directly comparable financial measure calculated and presented in accordance with GAAP, to Adjusted EBITDA and calculates the Adjusted EBITDA margin:

	Three Months Ended
(Dollars in thousands)	12/31/23		9/30/23		6/30/23		3/31/23		12/31/22
Net (loss) income	$	(42,658)	$	68,254	$	133,705	$	121,693	$	95,268
Interest expense	31,967		11,411		17,072		13,754		17,522
Income taxes	1,322		1,183		2,251		1,131		2,063
Depreciation and amortization	285,246		269,370		273,555		265,302		264,480
Stock compensation expense	34,592		16,288		15,492		16,486		11,586
Gain on sales of real estate	(62,227)		—		(214,810)		—		—
Unrealized (gains) losses on non-real estate investments	(19,479)		77,202		77,897		65,855		24,117
Impairment of real estate	271,890		20,649		168,575		—		26,186
Impairment of non-real estate investments	23,094		28,503		22,953		—		20,512
Adjusted EBITDA	$	523,747	$	492,860	$	496,690	$	484,221	$	461,734
Total revenues	$	757,216	$	713,788	$	713,900	$	700,795	$	670,281
Adjusted EBITDA margin	69%		69%		70%		69%		69%

We use Adjusted EBITDA as a supplemental performance measure of our operations, for financial and operational decision-making, and as a supplemental means of evaluating period-to-period comparisons on a consistent basis. Adjusted EBITDA is calculated as earnings before interest, taxes, depreciation, and amortization (“EBITDA”), excluding stock compensation expense, gains or losses on early extinguishment of debt, gains or losses on sales of real estate, impairments of real estate, and significant termination fees. Adjusted EBITDA also excludes unrealized gains or losses and significant realized gains or losses and impairments that result from our non-real estate investments. These non-real estate investment amounts are classified in our consolidated statements of operations outside of total revenues.

We believe Adjusted EBITDA provides investors with relevant and useful information as it allows investors to evaluate the operating performance of our business activities without having to account for differences recognized because of investing and financing decisions related to our real estate and non-real estate investments, our capital structure, capital market transactions, and variances resulting from the volatility of market conditions outside of our control. For example, we exclude gains or losses on the early extinguishment of debt to allow investors to measure our performance independent of our indebtedness and capital structure. We believe that adjusting for the effects of impairments and gains or losses on sales of real estate, significant impairments and realized gains or losses on non-real estate investments, and significant termination fees allows investors to evaluate performance from period to period on a consistent basis without having to account for differences recognized because of investing and financing decisions related to our real estate and non-real estate investments or other corporate activities that may not be representative of the operating performance of our properties.

In addition, we believe that excluding charges related to stock compensation and unrealized gains or losses facilitates for investors a comparison of our business activities across periods without the volatility resulting from market forces outside of our control. Adjusted EBITDA has limitations as a measure of our performance. Adjusted EBITDA does not reflect our historical expenditures or future requirements for capital expenditures or contractual commitments. While Adjusted EBITDA is a relevant measure of performance, it does not represent net income (loss) or cash flows from operations calculated and presented in accordance with GAAP, and it should not be considered as an alternative to those indicators in evaluating performance or liquidity.

In order to calculate the Adjusted EBITDA margin, we divide Adjusted EBITDA by total revenues as presented in our consolidated statements of operations. We believe that this supplemental performance measure provides investors with additional useful information regarding the profitability of our operating activities.

We are not able to forecast fourth quarter net income without unreasonable effort and therefore do not provide a reconciliation for Adjusted EBITDA on a forward-looking basis. This is due to the inherent difficulty of forecasting the timing and/or amount of items that depend on market conditions outside of our control, including the timing of dispositions, capital events, and financing decisions, as well as quarterly components such as gain on sales of real estate, unrealized gains or losses on non-real estate investments, impairment of real estate, and impairment of non-real estate investments. Our attempt to predict these amounts may produce significant but inaccurate estimates, which would be potentially misleading for our investors.

Annual rental revenue

Annual rental revenue represents the annualized fixed base rental obligations, calculated in accordance with GAAP, for leases in effect as of the end of the period, related to our operating RSF. Annual rental revenue is presented using 100% of the annual rental revenue from our consolidated properties and our share of annual rental revenue for our unconsolidated real estate joint ventures. Annual rental revenue per RSF is computed by dividing annual rental revenue by the sum of 100% of the RSF of our consolidated properties and our share of the RSF of properties held in unconsolidated real estate joint ventures. As of December 31, 2023, approximately 94% of our leases (on an annual rental revenue basis) were triple net leases, which require tenants to pay substantially all real estate taxes, insurance, utilities, repairs and maintenance, common area expenses, and other operating expenses (including increases thereto) in addition to base rent. Annual rental revenue excludes these operating expenses recovered from our tenants. Amounts recovered from our tenants related to these operating expenses, along with base rent, are classified in income from rentals in our consolidated statements of operations.

Capitalization rates

Capitalization rates are calculated based on net operating income and net operating income (cash basis) annualized, excluding lease termination fees, on stabilized operating assets for the quarter preceding the date on which the property is sold, or near-term prospective net operating income.

Capitalized interest

We capitalize interest cost as a cost of a project during periods for which activities necessary to develop or redevelop a project for its intended use are ongoing, provided that expenditures for the asset have been made and interest cost has been incurred. Activities necessary to develop or redevelop a project include pre-construction activities such as entitlements, permitting, design, site work, and other activities preceding commencement of construction of aboveground building improvements. The advancement of pre-construction efforts is focused on reducing the time required to deliver projects to prospective tenants. These critical activities add significant value for future ground-up development and are required for the vertical construction of buildings. If we cease activities necessary to prepare a project for its intended use, interest costs related to such project are expensed as incurred.

Cash interest

Cash interest is equal to interest expense calculated in accordance with GAAP plus capitalized interest, less amortization of loan fees and debt premiums (discounts). Refer to the definition of fixed-charge coverage ratio for a reconciliation of interest expense, the most directly comparable financial measure calculated and presented in accordance with GAAP, to cash interest.

Class A/A+ properties and AAA locations

Class A/A+ properties are properties clustered in AAA locations that provide innovative tenants with highly dynamic and collaborative environments that enhance their ability to successfully recruit and retain world-class talent and inspire productivity, efficiency, creativity, and success. Class A/A+ properties generally command higher annual rental rates than other classes of similar properties.

AAA locations are in close proximity to concentrations of specialized skills, knowledge, institutions, and related businesses. Such locations are generally characterized by high barriers to entry for new landlords, high barriers to exit for tenants, and a limited supply of available space.

Competitive supply

Represents the total rentable square footage of laboratory space under development or redevelopment that is both: (i) available for direct lease, and (ii) we believe is competitive with our laboratory space within a given submarket. Total competitive supply excludes owner user space.

Development, redevelopment, and pre-construction

A key component of our business model is our disciplined allocation of capital to the development and redevelopment of new Class A/A+ properties, and property enhancements identified during the underwriting of certain acquired properties, located in collaborative life science, agtech, and advanced technology mega campuses in AAA innovation clusters. These projects are generally focused on providing high-quality, generic, and reusable spaces that meet the real estate requirements of a wide range of tenants. Upon completion, each value-creation project is expected to generate increases in rental income, net operating income, and cash flows. Our development and redevelopment projects are generally in locations that are highly desirable to high-quality entities, which we believe results in higher occupancy levels, longer lease terms, higher rental income, higher returns, and greater long-term asset value.

Development projects generally consist of the ground-up development of generic and reusable laboratory facilities. Redevelopment projects consist of the permanent change in use of acquired office, warehouse, or shell space into laboratory, agtech, or advanced technology space. We generally will not commence new development projects for aboveground construction of new Class A/A+ laboratory, agtech, and advanced technology space without first securing significant pre-leasing for such space, except when there is solid market demand for high-quality Class A/A+ properties.

Priority anticipated projects are those most likely to commence future ground-up development or first-time conversion from non-laboratory space to laboratory space prior to our other future projects, pending market conditions and leasing negotiations.

Pre-construction activities include entitlements, permitting, design, site work, and other activities preceding commencement of construction of aboveground building improvements. The advancement of pre-construction efforts is focused on reducing the time required to deliver projects to prospective tenants. These critical activities add significant value for future ground-up development and are required for the vertical construction of buildings. Ultimately, these projects will provide high-quality facilities and are expected to generate significant revenue and cash flows.

Development, redevelopment, and pre-construction spending also includes the following costs: (i) amounts to bring certain acquired properties up to market standard and/or other costs identified during the acquisition process (generally within two years of acquisition) and (ii) permanent conversion of space for highly flexible, move-in-ready laboratory space to foster the growth of promising early- and growth-stage life science companies.

Revenue-enhancing and repositioning capital expenditures represent spending to reposition or significantly change the use of a property, including through improvement in the asset quality from Class B to Class A/A+.

Non-revenue-enhancing capital expenditures represent costs required to maintain the current revenues of a stabilized property, including the associated costs for renewed and re-leased space.

Dividend payout ratio (common stock)

Dividend payout ratio (common stock) is the ratio of the absolute dollar amount of dividends on our common stock (shares of common stock outstanding on the respective record dates multiplied by the related dividend per share) to funds from operations attributable to Alexandria’s common stockholders – diluted, as adjusted.

Dividend yield

Dividend yield for the quarter represents the annualized quarter dividend divided by the closing common stock price at the end of the quarter.

Fixed-charge coverage ratio

Fixed-charge coverage ratio is a non-GAAP financial measure representing the ratio of Adjusted EBITDA to cash interest and fixed charges. We believe that this ratio is useful to investors as a supplemental measure of our ability to satisfy fixed financing obligations and preferred stock dividends. Cash interest is equal to interest expense calculated in accordance with GAAP plus capitalized interest, less amortization of loan fees and debt premiums (discounts).

The following table reconciles interest expense, the most directly comparable financial measure calculated and presented in accordance with GAAP, to cash interest and computes fixed-charge coverage ratio:

	Three Months Ended
(Dollars in thousands)	12/31/23		9/30/23		6/30/23		3/31/23		12/31/22
Adjusted EBITDA	$	523,747	$	492,860	$	496,690	$	484,221	$	461,734
Interest expense	$	31,967	$	11,411	$	17,072	$	13,754	$	17,522
Capitalized interest	89,115		96,119		91,674		87,070		79,491
Amortization of loan fees	(4,059)		(4,059)		(3,729)		(3,639)		(3,975)
Amortization of debt discounts	(309)		(306)		(304)		(288)		(272)
Cash interest and fixed charges	$	116,714	$	103,165	$	104,713	$	96,897	$	92,766
Fixed-charge coverage ratio:
– quarter annualized	4.5x		4.8x		4.7x		5.0x		5.0x
– trailing 12 months	4.7x		4.9x		4.9x		5.0x		5.0x

We are not able to forecast fourth quarter net income without unreasonable effort and therefore do not provide a reconciliation for fixed-charge coverage ratio on a forward-looking basis. This is due to the inherent difficulty of forecasting the timing and/or amount of items that depend on market conditions outside of our control, including the timing of dispositions, capital events, and financing decisions, as well as quarterly components such as gain on sales of real estate, unrealized gains or losses on non-real estate investments, impairment of real estate, and impairment of non-real estate investments. Our attempt to predict these amounts may produce significant but inaccurate estimates, which would be potentially misleading for our investors.

Funds from operations and funds from operations, as adjusted, attributable to Alexandria’s common stockholders

GAAP-basis accounting for real estate assets utilizes historical cost accounting and assumes that real estate values diminish over time. In an effort to overcome the difference between real estate values and historical cost accounting for real estate assets, the Nareit Board of Governors established funds from operations as an improved measurement tool. Since its introduction, funds from operations has become a widely used non-GAAP financial measure among equity REITs. We believe that funds from operations is helpful to investors as an additional measure of the performance of an equity REIT. Moreover, we believe that funds from operations, as adjusted, allows investors to compare our performance to the performance of other real estate companies on a consistent basis, without having to account for differences recognized because of real estate acquisition and disposition decisions, financing decisions, capital structure, capital market transactions, variances resulting from the volatility of market conditions outside of our control, or other corporate activities that may not be representative of the operating performance of our properties.

The 2018 White Paper published by the Nareit Board of Governors (the “Nareit White Paper”) defines funds from operations as net income (computed in accordance with GAAP), excluding gains or losses on sales of real estate, and impairments of real estate, plus depreciation and amortization of operating real estate assets, and after adjustments for our share of consolidated and unconsolidated partnerships and real estate joint ventures. Impairments represent the write-down of assets when fair value over the recoverability period is less than the carrying value due to changes in general market conditions and do not necessarily reflect the operating performance of the properties during the corresponding period.

We compute funds from operations, as adjusted, as funds from operations calculated in accordance with the Nareit White Paper, excluding significant gains, losses, and impairments realized on non-real estate investments, unrealized gains or losses on non-real estate investments, gains or losses on early extinguishment of debt, significant termination fees, acceleration of stock compensation expense due to the resignations of executive officers, deal costs, the income tax effect related to such items, and the amount of such items that is allocable to our unvested restricted stock awards. We compute the amount that is allocable to our unvested restricted stock awards using the two-class method. Under the two-class method, we allocate net income (after amounts attributable to noncontrolling interests) to common stockholders and to unvested restricted stock awards by applying the respective weighted-average shares outstanding during each quarter-to-date and year-to-date period. This may result in a difference of the summation of the quarter-to-date and year-to-date amounts. Neither funds from operations nor funds from operations, as adjusted, should be considered as alternatives to net income (determined in accordance with GAAP) as indications of financial performance, or to cash flows from operating activities (determined in accordance with GAAP) as measures of liquidity, nor are they indicative of the availability of funds for our cash needs, including our ability to make distributions.

Funds from operations and funds from operations, as adjusted, attributable to Alexandria’s common stockholders (continued)

The following table reconciles net income to funds from operations for the share of consolidated real estate joint ventures attributable to noncontrolling interests and our share of unconsolidated real estate joint ventures:

	Noncontrolling Interest Share of Consolidated Real Estate JVs				Our Share of Unconsolidated <br>Real Estate JVs
	December 31, 2023				December 31, 2023
(In thousands)	Three Months Ended		Year Ended		Three Months Ended		Year Ended
Net income	$	45,771	$	177,355	$	363	$	980
Depreciation and amortization of real estate assets	30,137		115,349		965		3,589
Funds from operations	$	75,908	$	292,704	$	1,328	$	4,569

Gross assets

Gross assets are calculated as total assets plus accumulated depreciation:

(In thousands)	12/31/23		9/30/23		6/30/23		3/31/23		12/31/22
Total assets	$	36,771,402	$	36,783,293	$	36,659,257	$	36,912,465	$	35,523,399
Accumulated depreciation	4,985,019		4,856,436		4,646,833		4,561,854		4,354,063
Gross assets	$	41,756,421	$	41,639,729	$	41,306,090	$	41,474,319	$	39,877,462

Initial stabilized yield (unlevered)

Initial stabilized yield is calculated as the estimated amounts of net operating income at stabilization divided by our investment in the property. Our initial stabilized yield excludes the benefit of leverage. Our cash rents related to our value-creation projects are generally expected to increase over time due to contractual annual rent escalations. Our estimates for initial stabilized yields, initial stabilized yields (cash basis), and total costs at completion represent our initial estimates at the commencement of the project. We expect to update this information upon completion of the project, or sooner if there are significant changes to the expected project yields or costs.

•Initial stabilized yield reflects rental income, including contractual rent escalations and any rent concessions over the term(s) of the lease(s), calculated on a straight-line basis.

•Initial stabilized yield (cash basis) reflects cash rents at the stabilization date after initial rental concessions, if any, have elapsed and our total cash investment in the property.

Investment-grade or publicly traded large cap tenants

Investment-grade or publicly traded large cap tenants represent tenants that are investment-grade rated or publicly traded companies with an average daily market capitalization greater than $10 billion for the twelve months ended December 31, 2023, as reported by Bloomberg Professional Services. Credit ratings from Moody’s Investors Service and S&P Global Ratings reflect credit ratings of the tenant’s parent entity, and there can be no assurance that a tenant’s parent entity will satisfy the tenant’s lease obligation upon such tenant’s default. We monitor the credit quality and related material changes of our tenants. Material changes that cause a tenant’s market capitalization to decrease below $10 billion, which are not immediately reflected in the twelve-month average, may result in their exclusion from this measure.

Investments

We hold investments in publicly traded companies and privately held entities primarily involved in the life science, agtech, and technology industries. We recognize, measure, present, and disclose these investments as follows:

		Statements of Operations
	Balance Sheet	Gains and Losses
	Carrying Amount	Unrealized	Realized
			Difference between proceeds received upon disposition and historical cost
Publicly traded companies	Fair value	Changes in fair value
Privately held entities without readily determinable fair values that:
Report NAV	Fair value, using NAV as a practical expedient	Changes in NAV, as a practical expedient to fair value
Do not report NAV	Cost, adjusted for observable price changes and impairments(1)	Observable price changes(1)	Impairments to reduce costs to fair value, which result in an adjusted cost basis and the differences between proceeds received upon disposition and adjusted or historical cost
Equity method investments	Contributions, adjusted for our share of the investee’s earnings or losses, less distributions received, reduced by other-than-temporary impairments	Our share of unrealized gains or losses reported by the investee	Our share of realized gains or losses reported by the investee, and other-than-temporary impairments

(1)An observable price is a price observed in an orderly transaction for an identical or similar investment of the same issuer. Observable price changes result from, among other things, equity transactions for the same issuer with similar rights and obligations executed during the reporting period, including subsequent equity offerings or other reported equity transactions related to the same issuer.

Investments in real estate

The following table reconciles our investments in real estate as of December 31, 2023:

(In thousands)	Investments in <br>Real Estate
Gross investments in real estate – North America	$	36,614,318
Less: accumulated depreciation – North America	(4,980,807)
Net investments in real estate – North America	31,633,511
Net investments in real estate – Asia	—
Investments in real estate	$	31,633,511

The following table presents our value-creation pipeline of new Class A/A+ development and redevelopment projects, excluding properties held for sale, as a percentage of gross assets as of December 31, 2023:

	Percentage of Gross Assets
Under construction projects and near-term project expected to commence construction in the next two years (60% leased/negotiating)	9%
Income-producing/potential cash flows/covered land play(1)	7%
Land	4%

(1)Includes projects with existing buildings that are generating or can generate operating cash flows. Also includes development rights associated with existing operating campuses. These projects aggregated 1.1% of total annual rental revenue as of December 31, 2023 and are included in our industry mix chart as targeted for a future change in use. Refer to “High-quality and diverse client base in AAA locations” of this Supplemental Information.

Space Intentionally Blank

The square footage presented in the table below is classified as operating as of December 31, 2023. These lease expirations or vacant space at recently acquired properties represent future opportunities for which we have the intent, subject to market conditions and leasing, to commence first-time conversion from non-laboratory space to laboratory space, or to commence future ground-up development:

	Dev/<br>Redev		RSF of Lease Expirations Targeted for<br>Development and Redevelopment
Property/Submarket		2024		2025		Thereafter(1)		Total
Committed near-term project:
4161 Campus Point Court/University Town Center	Dev		159,884		—		—		159,884
Priority anticipated projects:
311 Arsenal Street/Cambridge/Inner Suburbs	Redev		308,446		25,312		—		333,758
269 East Grand Avenue/South San Francisco	Redev		107,250		—		—		107,250
3301 Monte Villa Parkway/Bothell	Redev		50,552		—		—		50,552
1020 Red River Street/Austin	Redev		—		126,034		—		126,034
			466,248		151,346		—		617,594
Future projects:
100 Edwin H. Land Boulevard/Cambridge	Dev		104,500		—		—		104,500
446, 458, 500, and 550 Arsenal Street/Cambridge/Inner Suburbs	Dev		—		—		380,991		380,991
Other/Greater Boston	Redev		—		—		167,549		167,549
1122 and 1150 El Camino Real/South San Francisco	Dev		—		—		375,232		375,232
3875 Fabian Way/Greater Stanford	Dev		—		—		228,000		228,000
2100, 2200, 2300, and 2400 Geng Road/Greater Stanford	Dev		84,083		—		78,501		162,584
960 Industrial Road/Greater Stanford	Dev		—		—		112,590		112,590
10975 and 10995 Torreyana Road/Torrey Pines	Dev		84,829		—		—		84,829
Campus Point by Alexandria/University Town Center	Dev		335,308		—		—		335,308
Sequence District by Alexandria/Sorrento Mesa	Dev/Redev		—		—		684,866		684,866
830 4th Avenue South/SoDo	Dev		—		—		42,380		42,380
Other/Seattle	Dev		—		—		77,376		77,376
100 Capitola Drive/Research Triangle	Dev		—		—		34,527		34,527
1001 Trinity Street/Austin	Dev		—		72,938		—		72,938
Canada	Redev		—		—		247,743		247,743
			608,720		72,938		2,429,755		3,111,413
			1,234,852		224,284		2,429,755		3,888,891

(1)Includes vacant square footage as of December 31, 2023.

Joint venture financial information

We present components of balance sheet and operating results information related to our real estate joint ventures, which are not presented, or intended to be presented, in accordance with GAAP. We present the proportionate share of certain financial line items as follows: (i) for each real estate joint venture that we consolidate in our financial statements, which are controlled by us through contractual rights or majority voting rights, but of which we own less than 100%, we apply the noncontrolling interest economic ownership percentage to each financial item to arrive at the amount of such cumulative noncontrolling interest share of each component presented; and (ii) for each real estate joint venture that we do not control and do not consolidate, and are instead controlled jointly or by our joint venture partners through contractual rights or majority voting rights, we apply our economic ownership percentage to each financial item to arrive at our proportionate share of each component presented.

The components of balance sheet and operating results information related to our real estate joint ventures do not represent our legal claim to those items. For each entity that we do not wholly own, the joint venture agreement generally determines what equity holders can receive upon capital events, such as sales or refinancing, or in the event of a liquidation. Equity holders are normally entitled to their respective legal ownership of any residual cash from a joint venture only after all liabilities, priority distributions, and claims have been repaid or satisfied.

We believe that this information can help investors estimate the balance sheet and operating results information related to our partially owned entities. Presenting this information provides a perspective not immediately available from consolidated financial statements and one that can supplement an understanding of the joint venture assets, liabilities, revenues, and expenses included in our consolidated results.

The components of balance sheet and operating results information related to our real estate joint ventures are limited as an analytical tool as the overall economic ownership interest does not represent our legal claim to each of our joint ventures’ assets, liabilities, or results of operations. In addition, joint venture financial information may include financial information related to the unconsolidated real estate joint ventures that we do not control. We believe that in order to facilitate for investors a clear understanding of our operating results and our total assets and liabilities, joint venture financial information should be examined in conjunction with our consolidated statements of operations and balance sheets. Joint venture financial information should not be considered an alternative to our consolidated financial statements, which are presented and prepared in accordance with GAAP.

Key items included in net income attributable to Alexandria’s common stockholders

We present a tabular comparison of items, whether gain or loss, that may facilitate a high-level understanding of our results and provide context for the disclosures included in this Supplemental Information, our most recent annual report on Form 10-K, and our subsequent quarterly reports on Form 10-Q. We believe that such tabular presentation promotes a better understanding for investors of the corporate-level decisions made and activities performed that significantly affect comparison of our operating results from period to period. We also believe that this tabular presentation will supplement for investors an understanding of our disclosures and real estate operating results. Gains or losses on sales of real estate and impairments of assets classified as held for sale are related to corporate-level decisions to dispose of real estate. Gains or losses on early extinguishment of debt are related to corporate-level financing decisions focused on our capital structure strategy. Significant realized and unrealized gains or losses on non-real estate investments, impairments of real estate and non-real estate investments, and acceleration of stock compensation expense due to the resignation of an executive officer are not related to the operating performance of our real estate assets as they result from strategic, corporate-level non-real estate investment decisions and external market conditions. Impairments of non-real estate investments are not related to the operating performance of our real estate as they represent the write-down of non-real estate investments when their fair values decrease below their respective carrying values due to changes in general market or other conditions outside of our control. Significant items, whether a gain or loss, included in the tabular disclosure for current periods are described in further detail in this Supplemental Information and accompanying Earnings Press Release.

Mega campus

Mega campuses are cluster campuses that consist of approximately 1 million RSF or more, including operating, active development/redevelopment, and land RSF less operating RSF expected to be demolished. The following table reconciles our annual rental revenue and value-creation pipeline RSF as of December 31, 2023 (dollars in thousands):

	Annual Rental Revenue			Value-Creation Pipeline RSF
Mega campus	$	1,621,074		20,859,507
Non-mega campus	547,096			10,648,805
Total	$	2,168,170		31,508,312
Mega campus as a percentage of total annual rental revenue and of total value-creation pipeline RSF	75		%	66	%

Net cash provided by operating activities after dividends

Net cash provided by operating activities after dividends includes the deduction for distributions to noncontrolling interests. For purposes of this calculation, changes in operating assets and liabilities are excluded as they represent timing differences.

Net debt and preferred stock to Adjusted EBITDA

Net debt and preferred stock to Adjusted EBITDA is a non-GAAP financial measure that we believe is useful to investors as a supplemental measure of evaluating our balance sheet leverage. Net debt and preferred stock is equal to the sum of total consolidated debt less cash, cash equivalents, and restricted cash, plus preferred stock outstanding as of the end of the period. Refer to the definition of Adjusted EBITDA and Adjusted EBITDA margin for further information on the calculation of Adjusted EBITDA.

The following table reconciles debt to net debt and preferred stock and computes the ratio to Adjusted EBITDA:

(Dollars in thousands)	12/31/23			9/30/23			6/30/23			3/31/23			12/31/22
Secured notes payable	$	119,662		$	109,110		$	91,939		$	73,645		$	59,045
Unsecured senior notes payable	11,096,028			11,093,725			11,091,424			11,089,124			10,100,717
Unsecured senior line of credit and commercial paper	99,952			—			—			374,536			—
Unamortized deferred financing costs	76,329			78,496			80,663			82,831			74,918
Cash and cash equivalents	(618,190)			(532,390)			(924,370)			(1,263,452)			(825,193)
Restricted cash	(42,581)			(35,321)			(35,920)			(34,932)			(32,782)
Preferred stock	—			—			—			—			—
Net debt and preferred stock	$	10,731,200		$	10,713,620		$	10,303,736		$	10,321,752		$	9,376,705
Adjusted EBITDA:
– quarter annualized	$	2,094,988		$	1,971,440		$	1,986,760		$	1,936,884		$	1,846,936
– trailing 12 months	$	1,997,518		$	1,935,505		$	1,895,336		$	1,848,018		$	1,797,536
Net debt and preferred stock to Adjusted EBITDA:
– quarter annualized	5.1		x	5.4		x	5.2		x	5.3		x	5.1		x
– trailing 12 months	5.4		x	5.5		x	5.4		x	5.6		x	5.2		x

We are not able to forecast fourth quarter net income without unreasonable effort and therefore do not provide a reconciliation for net debt and preferred stock to Adjusted EBITDA on a forward-looking basis. This is due to the inherent difficulty of forecasting the timing and/or amount of items that depend on market conditions outside of our control, including the timing of dispositions, capital events, and financing decisions, as well as quarterly components such as gain on sales of real estate, unrealized gains or losses on non-real estate investments, impairment of real estate, and impairment of non-real estate investments. Our attempt to predict these amounts may produce significant but inaccurate estimates, which would be potentially misleading for our investors.

Net operating income, net operating income (cash basis), and operating margin

The following table reconciles net income (loss) to net operating income and net operating income (cash basis) and computes operating margin:

	Three Months Ended				Year Ended
(Dollars in thousands)	12/31/23		12/31/22		12/31/23		12/31/22
Net (loss) income	$	(42,658)	$	95,268	$	280,994	$	670,701
Equity in earnings of unconsolidated real estate joint ventures	(363)		(172)		(980)		(645)
General and administrative expenses	59,289		42,992		199,354		177,278
Interest expense	31,967		17,522		74,204		94,203
Depreciation and amortization	285,246		264,480		1,093,473		1,002,146
Impairment of real estate	271,890		26,186		461,114		64,969
Loss on early extinguishment of debt	—		—		—		3,317
Gain on sales of real estate	(62,227)		—		(277,037)		(537,918)
Investment (income) loss	(8,654)		19,653		195,397		331,758
Net operating income	534,490		465,929		2,026,519		1,805,809
Straight-line rent revenue	(41,586)		(24,185)		(133,917)		(118,003)
Amortization of acquired below-market leases	(23,684)		(20,125)		(93,331)		(74,346)
Net operating income (cash basis)	$	469,220	$	421,619	$	1,799,271	$	1,613,460
Net operating income (cash basis) – annualized	$	1,876,880	$	1,686,476	$	1,799,271	$	1,613,460
Net operating income (from above)	$	534,490	$	465,929	$	2,026,519	$	1,805,809
Total revenues	$	757,216	$	670,281	$	2,885,699	$	2,588,962
Operating margin	71%		70%		70%		70%

Net operating income is a non-GAAP financial measure calculated as net income (loss), the most directly comparable financial measure calculated and presented in accordance with GAAP, excluding equity in the earnings of our unconsolidated real estate joint ventures, general and administrative expenses, interest expense, depreciation and amortization, impairments of real estate, gains or losses on early extinguishment of debt, gains or losses on sales of real estate, and investment income or loss. We believe net operating income provides useful information to investors regarding our financial condition and results of operations because it primarily reflects those income and expense items that are incurred at the property level. Therefore, we believe net operating income is a useful measure for investors to evaluate the operating performance of our consolidated real estate assets. Net operating income on a cash basis is net operating income adjusted to exclude the effect of straight-line rent and amortization of acquired above- and below-market lease revenue adjustments required by GAAP. We believe that net operating income on a cash basis is helpful to investors as an additional measure of operating performance because it eliminates straight-line rent revenue and the amortization of acquired above- and below-market leases.

Furthermore, we believe net operating income is useful to investors as a performance measure of our consolidated properties because, when compared across periods, net operating income reflects trends in occupancy rates, rental rates, and operating costs, which provide a perspective not immediately apparent from net income or loss. Net operating income can be used to measure the initial stabilized yields of our properties by calculating net operating income generated by a property divided by our investment in the property. Net operating income excludes certain components from net income in order to provide results that are more closely related to the results of operations of our properties. For example, interest expense is not necessarily linked to the operating performance of a real estate asset and is often incurred at the corporate level rather than at the property level. In addition, depreciation and amortization, because of historical cost accounting and useful life estimates, may distort comparability of operating performance at the property level. Impairments of real estate have been excluded in deriving net operating income because we do not consider impairments of real estate to be property-level operating expenses. Impairments of real estate relate to changes in the values of our assets and do not reflect the current operating performance with respect to related revenues or expenses. Our impairments of real estate represent the write-down in the value of the assets to the estimated fair value less cost to sell. These impairments result from investing decisions or a deterioration in market conditions. We also exclude realized and unrealized investment gain or loss, which results from investment decisions that occur at the corporate level related to non-real estate investments in publicly traded companies and certain privately held entities. Therefore, we do not consider these activities to be an indication of operating performance of our real estate assets at the property level. Our calculation of net operating income also excludes charges incurred from changes in certain financing decisions, such as losses on early extinguishment of debt, as these charges often relate to corporate strategy. Property operating expenses included in determining net operating income primarily consist of costs that are related to our operating properties, such as utilities, repairs, and maintenance; rental expense related to ground leases; contracted services, such as janitorial, engineering, and landscaping; property taxes and insurance; and property-level salaries. General and administrative expenses consist primarily of accounting and corporate compensation, corporate insurance, professional fees, rent, and supplies that are incurred as part of corporate office management. We calculate operating margin as net operating income divided by total revenues.

We believe that in order to facilitate for investors a clear understanding of our operating results, net operating income should be examined in conjunction with net income or loss as presented in our consolidated statements of operations. Net operating income should not be considered as an alternative to net income or loss as an indication of our performance, nor as an alternative to cash flows as a measure of our liquidity or our ability to make distributions.

Operating statistics

We present certain operating statistics related to our properties, including number of properties, RSF, occupancy percentage, leasing activity, and contractual lease expirations as of the end of the period. We believe these measures are useful to investors because they facilitate an understanding of certain trends for our properties. We compute the number of properties, RSF, occupancy percentage, leasing activity, and contractual lease expirations at 100% for all properties in which we have an investment, including properties owned by our consolidated and unconsolidated real estate joint ventures. For operating metrics based on annual rental revenue, refer to the definition of annual rental revenue herein.

Same property comparisons

As a result of changes within our total property portfolio during the comparative periods presented, including changes from assets acquired or sold, properties placed into development or redevelopment, and development or redevelopment properties recently placed into service, the consolidated total income from rentals, as well as rental operating expenses in our operating results, can show significant changes from period to period. In order to supplement an evaluation of our results of operations over a given quarterly or annual period, we analyze the operating performance for all consolidated properties that were fully operating for the entirety of the comparative periods presented, referred to as same properties. We separately present quarterly and year-to-date same property results to align with the interim financial information required by the SEC in our management’s discussion and analysis of our financial condition and results of operations. These same properties are analyzed separately from properties acquired subsequent to the first day in the earliest comparable quarterly or year-to-date period presented, properties that underwent development or redevelopment at any time during the comparative periods, unconsolidated real estate joint ventures, properties classified as held for sale, and corporate entities (legal entities performing general and administrative functions), which are excluded from same property results. Additionally, termination fees, if any, are excluded from the results of same properties.

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December 31, 2023

Same property comparisons (continued)

The following table reconciles the number of same properties to total properties for the year ended December 31, 2023:

			Redevelopment – placed into
Development – under construction	Properties		service after January 1, 2022		Properties
201 Brookline Avenue	1		3160 Porter Drive		1
1150 Eastlake Avenue East	1		5505 Morehouse Drive		1
9810 and 9820 Darnestown Road	2		The Arsenal on the Charles		11
99 Coolidge Avenue	1		30-02 48th Avenue		1
500 North Beacon Street and 4 Kingsbury Avenue	2		2400 Ellis Road, 40 Moore Drive, and 14 TW Alexander Drive		3
9808 Medical Center Drive	1		20400 Century Boulevard		1
1450 Owens Street	1		140 First Street		1
230 Harriet Tubman Way	1		9601 and 9603 Medical Center Drive		2
4155 Campus Point Court	1				21
10935, 10945, and 10955 Alexandria Way	3		Acquisitions after January 1, 2022		Properties
		3301, 3303, 3305, and 3307 Hillview Avenue		4
10075 Barnes Canyon Road	1
421 Park Drive	1		8505 Costa Verde Boulevard and 4260 Nobel Drive		2
4135 Campus Point Court	1
	17		225 and 235 Presidential Way		2
Development – placed into			104 TW Alexander Drive		4
service after January 1, 2022	Properties		One Hampshire Street		1
825 and 835 Industrial Road	2		Intersection Campus		9
9950 Medical Center Drive	1		100 Edwin H. Land Boulevard		1
3115 Merryfield Row	1		10010 and 10140 Campus Point Drive and 4275 Campus Point Court		3
8 and 10 Davis Drive	2
5 and 9 Laboratory Drive	2		446 and 458 Arsenal Street		2
10055 Barnes Canyon Road	1		35 Gatehouse Drive		1
10102 Hoyt Park Drive	1		1001 Trinity Street and 1020 Red River Street		2
751 Gateway Boulevard	1
15 Necco Street	1		Other		10
325 Binney Street	1				41
6040 George Watts Hill Drive	1		Unconsolidated real estate JVs		4
	14		Properties held for sale		7
Redevelopment – under construction	Properties		Total properties excluded from same properties		123
840 Winter Street	1
40, 50, and 60 Sylvan Road	3		Same properties		288
Alexandria Center® for Advanced Technologies – Monte Villa Parkway	6		Total properties in North America as of December 31, 2023		411
651 Gateway Boulevard	1
401 Park Drive	1
8800 Technology Forest Place	1
Canada	4
Other	2
	19

Stabilized occupancy date

The stabilized occupancy date represents the estimated date on which the project is expected to reach occupancy of 95% or greater.

Tenant recoveries

Tenant recoveries represent revenues comprising reimbursement of real estate taxes, insurance, utilities, repairs and maintenance, common area expenses, and other operating expenses and earned in the period during which the applicable expenses are incurred and the tenant’s obligation to reimburse us arises.

We classify rental revenues and tenant recoveries generated through the leasing of real estate assets within revenues in income from rentals in our consolidated statements of operations. We provide investors with a separate presentation of rental revenues and tenant recoveries in “Same property performance” of this Supplemental Information because we believe it promotes investors’ understanding of our operating results. We believe that the presentation of tenant recoveries is useful to investors as a supplemental measure of our ability to recover operating expenses under our triple net leases, including recoveries of utilities, repairs and maintenance, insurance, property taxes, common area expenses, and other operating expenses, and of our ability to mitigate the effect to net income for any significant variability to components of our operating expenses.

The following table reconciles income from rentals to tenant recoveries:

	Three Months Ended										Year Ended
(In thousands)	12/31/23		9/30/23		6/30/23		3/31/23		12/31/22		12/31/23		12/31/22
Income from rentals	$	742,637	$	707,531	$	704,339	$	687,949	$	665,674	$	2,842,456	$	2,576,040
Rental revenues	(561,428)		(526,352)		(537,889)		(518,302)		(499,348)		(2,143,971)		(1,950,098)
Tenant recoveries	$	181,209	$	181,179	$	166,450	$	169,647	$	166,326	$	698,485	$	625,942

Total equity capitalization

Total equity capitalization is equal to the outstanding shares of common stock multiplied by the closing price on the last trading day at the end of each period presented.

Total market capitalization

Total market capitalization is equal to the sum of total equity capitalization and total debt.

Unencumbered net operating income as a percentage of total net operating income

Unencumbered net operating income as a percentage of total net operating income is a non-GAAP financial measure that we believe is useful to investors as a performance measure of the results of operations of our unencumbered real estate assets as it reflects those income and expense items that are incurred at the unencumbered property level. Unencumbered net operating income is derived from assets classified in continuing operations, which are not subject to any mortgage, deed of trust, lien, or other security interest, as of the period for which income is presented.

The following table summarizes unencumbered net operating income as a percentage of total net operating income:

	Three Months Ended
(Dollars in thousands)	12/31/23		9/30/23		6/30/23		3/31/23		12/31/22
Unencumbered net operating income	$	533,382	$	495,012	$	500,923	$	492,860	$	464,944
Encumbered net operating income	1,108		1,089		1,143		1,002		985
Total net operating income	$	534,490	$	496,101	$	502,066	$	493,862	$	465,929
Unencumbered net operating income as a percentage of total net operating income	99.8%		99.8%		99.8%		99.8%		99.8%

Weighted-average interest rate for capitalization of interest

The weighted-average interest rate required for calculating capitalization of interest pursuant to GAAP represents a weighted-average rate as of the end of the applicable period, based on the rates applicable to borrowings outstanding during the period, including expense/income related to interest rate hedge agreements, amortization of loan fees, amortization of debt premiums (discounts), and other bank fees. A separate calculation is performed to determine our weighted-average interest rate for capitalization for each month. The rate will vary each month due to changes in variable interest rates, outstanding debt balances, the proportion of variable-rate debt to fixed-rate debt, the amount and terms of interest rate hedge agreements, and the amount of loan fee and premium (discount) amortization.

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Weighted-average shares of common stock outstanding – diluted

From time to time, we enter into capital market transactions, including forward equity sales agreements (“Forward Agreements”), to fund acquisitions, to fund construction of our highly leased development and redevelopment projects, and for general working capital purposes. We are required to consider the potential dilutive effect of our Forward Agreements under the treasury stock method while the Forward Agreements are outstanding. As of December 31, 2023, we had no Forward Agreements outstanding.

The weighted-average shares of common stock outstanding used in calculating EPS – diluted, FFO per share – diluted, and FFO per share – diluted, as adjusted, during each period are calculated as follows. Also shown are the weighted-average unvested shares associated with restricted stock awards used in calculating amounts allocable to unvested stock award holders for each of the respective periods presented below:

	Three Months Ended					Year Ended
(In thousands)	12/31/23	9/30/23	6/30/23	3/31/23	12/31/22	12/31/23	12/31/22
Basic shares for earnings per share	171,096	170,890	170,864	170,784	165,393	170,909	161,659
Forward Agreements	—	—	—	—	—	—	—
Diluted shares for earnings per share	171,096	170,890	170,864	170,784	165,393	170,909	161,659
Basic shares for funds from operations per share and funds from operations per share, as adjusted	171,096	170,890	170,864	170,784	165,393	170,909	161,659
Forward Agreements	—	—	—	—	—	—	—
Diluted shares for funds from operations per share and funds from operations per share, as adjusted	171,096	170,890	170,864	170,784	165,393	170,909	161,659
Weighted-average unvested restricted shares used in the allocations of net income, funds from operations, and funds from operations, as adjusted	2,734	2,124	2,163	2,277	1,614	2,325	1,723
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