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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): April 22, 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
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 April 22, 2024, Alexandria Real Estate Equities, Inc. (the “Company”) issued a press release entitled “Alexandria Real Estate Equities, Inc. Reports First Quarter Ended March 31, 2024 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 First Quarter Ended March 31, 2024

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.
April 22, 2024 By: /s/ Joel S. Marcus
Joel S. Marcus
Executive Chairman
By: /s/ Peter M. Moglia
Peter M. Moglia
Chief Executive Officer and
Chief Investment Officer
By: /s/ Marc E. Binda
Marc E. Binda
Chief Financial Officer and Treasurer

EX-99.1 2 a1q24ex991supp.htm EX-99.1 Document

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Table of Contents
March 31, 2024
COMPANY HIGHLIGHTS Page Page
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EARNINGS PRESS RELEASE Page Page
First Quarter Ended March 31, 2024 Financial and Operating Results
SUPPLEMENTAL INFORMATION Page Page
External Growth / Investments in Real Estate
New Class A/A+ Development and Redevelopment Properties:
Internal Growth
Balance Sheet Management
Definitions and Reconciliations
Alexandria Real Estate Equities, Inc. All Rights Reserved. © 2024
ii


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Source: S&P Global Market Intelligence. Assumes reinvestment of dividends.
The FTSE Nareit Equity Health Care Index represents all its constituent companies, among which Alexandria is not included. Excluding Alexandria, the REITs presented individually in the chart above are only those constituents of the FTSE Nareit Equity Health Care Index as of March 31, 2024 for which TSR information since May 27, 1997 is available.
(1)Alexandria’s initial public offering (“IPO”) was priced at $20.00 per share on May 27, 1997.


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(1)As of March 31, 2024, our asset base in North America includes 42.2 million RSF of operating properties and 5.3 million RSF of Class A/A+ properties undergoing construction and one committed near-term project expected to commence construction in the next two years, 2.5 million RSF of priority anticipated development and redevelopment projects, and 24.1 million SF of future development projects.


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Refer to “Definitions and reconciliations” in the Supplemental Information for additional details.
(1)Represents the midpoint of our 2024 guidance range. Refer to “Guidance” in the Earnings Press Release for additional details.


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Refer to “Definitions and reconciliations” in the Supplemental Information for additional details.


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(1)Dividend yield is calculated as the dividend declared for the three months ended March 31, 2024 of $1.27 per common share annualized divided by the closing price of our common stock on March 31, 2024 of $128.91.
(2)Represents the years ended December 31, 2020 through 2023 and the three months ended March 31, 2024 annualized.
(3)Represents the years ended December 31, 2020 through 2023 and the midpoint of our 2024 guidance range. Refer to “Guidance” in the Earnings Press Release for additional details.
(4)Represents common stock dividend declared for the three months ended March 31, 2024 annualized.


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(1)Represents the average of acquired vacancy percentages as of each years ended 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 the Earnings Press Release for additional details.
(3)Represents occupancy percentage of operating properties in North America as of each period-end.


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As of March 31, 2024. Annual rental revenue represents amounts in effect as of March 31, 2024. Refer to “Definitions and reconciliations” in the Supplemental Information for additional details.
(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.
(2)Represents the percentage of our annual rental revenue generated from space that is currently targeted for a future change in use to laboratory space, including 1.0% of annual rental revenue that is generated from covered land play projects for future development opportunities. The weighted-average remaining term of these leases is 3.6 years.
(3)Represents the percentage of our annual rental revenue generated by “Other” tenants, which 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.



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As of March 31, 2024.
(1)Represents tenant rents and receivables collected for each quarter-end as of each respective earnings release date.


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Refer to “Net operating income” under “Definitions and reconciliations” in the Supplemental Information for additional details, including 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 expected to be placed into service primarily commencing from 2Q24 through 4Q27 is projected to be $380 million.
(2)Represents expected incremental annual net operating income to be placed into service from deliveries of projects undergoing construction and one committed near-term project expected to commence construction in the next two years, including partial deliveries of projects that stabilize in future years.
(3)Includes 1.2 million RSF that is expected to stabilize in 2024 and is 98% leased/negotiating. Refer to the initial and stabilized occupancy years under “New Class A/A+ development and redevelopment properties: current projects” in the Supplemental Information for additional details.
(4)In addition to the projects represented, we are evaluating one priority anticipated development project that could commence active construction in 2024 and may have initial delivery in 2025.


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(1)Includes amounts related to real estate dispositions and sales of partial interests completed from January 1, 2019 through March 31, 2024.
(2)Represents aggregate gains on real estate sales and associated real estate impairments and consideration in excess of book value of partial interests sold that were accounted as equity transactions.


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As of March 31, 2024.
(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 and Nareit.
(2)Quarter annualized. Refer to “Definitions and reconciliations” in the Supplemental Information for additional details.


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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 April 5, 2024.
(2)Source: Evaluate Pharma, March 2024. Represents consensus forecast for global biopharma R&D spend in 2023.
(3)Sources: PitchBook, BioCentury, and NASDAQ. Includes venture capital investments in U.S.-based life science companies and IPOs, follow-ons, and public equity financings raised by U.S. listed biopharma companies in 2023.
(4)Sources: National Institutes of Health (“NIH”) and National Science Foundation (“NSF”). Includes FY2023 NIH funding and FY2023 NSF research and related activities.
(5)Source: The Giving Institute, “Giving USA 2023: The Annual Report on Philanthropy for the Year 2022.” Represents the annual funding amount for 2022, the latest data available.
(6)Dollar amount represents aggregate funding from all sources presented, and percentage represents the aggregate increase in funding compared to the previous five-year period (2014–2018).


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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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Source: Evaluate Pharma, March 2024. Total corporate R&D spend by global biopharma companies. Includes analyst forecast values for companies that have not reported 2023 full-year results. Top 20 companies ranked by pharma R&D spend in 2023.
(1)Source: Evaluate Pharma, “World Preview 2022 Outlook to 2028: Patents and Pricing.”


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Source: BioCentury, April 2024. Represents public follow-on and private investment in public equity (“PIPE”) financings completed by U.S. listed biopharma companies.


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Source: PitchBook, April 2024.


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Alexandria Real Estate Equities, Inc. Reports:
1Q24 Net Income per Share – Diluted of $0.97; and
1Q24 FFO per Share – Diluted, as Adjusted, of $2.35
PASADENA, Calif. – April 22, 2024 – Alexandria Real Estate Equities, Inc. (NYSE: ARE) announced financial and operating results for the first quarter ended March 31, 2024.
Key highlights
Operating results 1Q24 1Q23
Total revenues:
In millions $ 769.1  $ 700.8 
Growth 9.7%
Net income attributable to Alexandria’s common stockholders – diluted:
In millions $ 166.9  $ 75.3 
Per share $ 0.97  $ 0.44 
Funds from operations attributable to Alexandria’s common stockholders – diluted, as adjusted:
In millions $ 403.9  $ 373.7 
Per share $ 2.35  $ 2.19 
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 annual rental revenue in effect from mega campuses as of March 31, 2024
74  %
Percentage of annual rental revenue in effect from investment-grade or publicly traded large cap tenants as of March 31, 2024
52  %
Sustained strength in tenant collections:
Tenant receivables as of March 31, 2024 represent 1.0% of rental revenues
$ 7.5 million
April 2024 tenant rents and receivables collected as of April 22, 2024
99.7  %
1Q24 tenant rents and receivables collected as of April 22, 2024
99.9  %
Occupancy of operating properties in North America as of March 31, 2024
94.6  %
Operating margin 72  %
Adjusted EBITDA margin 72  %
Weighted-average remaining lease term as of March 31, 2024:
Top 20 tenants 9.7 years
All tenants 7.5 years
Strong leasing volume and rental rate increases
•Strong rental rate increases of 33.0% and 19.0% (cash basis).
•Strong leasing volume aggregating 1.1 million RSF during 1Q24.
•77% of our leasing activity during the last twelve months was generated from our existing tenant base.
1Q24
Total leasing activity – RSF 1,142,857 
Leasing of development and redevelopment space – RSF 100,232 
Lease renewals and re-leasing of space:
RSF (included in total leasing activity above) 994,770 
Rental rate increase 33.0%
Rental rate increase (cash basis) 19.0%



Continued solid net operating income and internal growth
•Net operating income (cash basis) of $1.9 billion for 1Q24 annualized, up $132.7 million, or 7.6%, compared to 1Q23 annualized.
•Same property net operating income growth of 1.0% and 4.2% (cash basis) for 1Q24 over 1Q23.
•96% of our leases contain contractual annual rent escalations approximating 3%.

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 5.2x and fixed-charge coverage ratio of 4.7x for 1Q24 annualized.
•Significant liquidity of $6.0 billion.
•32% of our total debt matures in 2049 and beyond.
•13.4 years weighted-average remaining term of debt.
•98.9% of our debt has a fixed rate.
•Total debt and preferred stock to gross assets of 28%.
•$1.3 billion of expected capital contribution commitments from existing consolidated real estate joint venture partners to fund construction from 2Q24 through 2027.

Consistent dividend strategy with a focus on retaining significant net cash flows from operating activities after dividends for reinvestment
•Common stock dividend declared for 1Q24 of $1.27 per common share, aggregating $5.02 per common share for the twelve months ended March 31, 2024, up 24 cents, or 5%, over the twelve months ended March 31, 2023.
•Dividend yield of 3.9% as of March 31, 2024.
•Dividend payout ratio of 54% for the three months ended March 31, 2024.
•Average annual dividend per-share growth of 5% from 2020 through 1Q24 annualized.
•Significant net cash flows from operating activities after dividends retained for reinvestment aggregating $2.1 billion for the years ended December 31, 2020 through 2023 and for the midpoint of our 2024 guidance range for net cash provided by operating activities after dividends.


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First Quarter Ended March 31, 2024 Financial and Operating Results (continued)
March 31, 2024
Alexandria’s highly leased value-creation pipeline delivered incremental annual net operating income of $26 million commencing during 1Q24 and will drive future incremental annual net operating income aggregating $480 million
•During 1Q24, we placed into service development and redevelopment projects aggregating 343,445 RSF that are 100% leased across multiple submarkets and delivered incremental annual net operating income of $26 million. 1Q24 deliveries include:
•100,624 RSF at 500 North Beacon Street located on The Arsenal on the Charles mega campus in our Cambridge/Inner Suburbs submarket;
•115,598 RSF at the Alexandria Center® for Advanced Technologies – Monte Villa Parkway in our Bothell submarket; and
•72,846 RSF at 99 Coolidge Avenue in our Cambridge/Inner Suburbs submarket.
•Annual net operating income (cash basis) is expected to increase by $101 million upon the burn-off of initial free rent from recently delivered projects. Initial free rent has a weighted-average burn-off period of approximately seven months.
•69% of the RSF in our total value-creation pipeline is within our mega campuses.
Development and Redevelopment Projects
Incremental
Annual Net Operating Income
RSF Leased/Negotiating
Percentage
(dollars in millions)
Placed into service in 1Q24
$ 26  343,445  100%
Expected to be placed into service(1):
2Q24 through 4Q24
$ 120 
(2)
5,541,380 63  %
2025 109 
(3)
(4)
1Q26 through 4Q27
251 
$ 480 
(1)Represents expected incremental annual net operating income to be placed into service from deliveries of projects undergoing construction and one committed near-term project expected to commence construction in the next two years, including partial deliveries of projects that stabilize in future years.
(2)Includes 1.2 million RSF that is expected to stabilize in 2024 and is 98% leased/negotiating. Refer to the initial and stabilized occupancy years under “New Class A/A+ development and redevelopment properties: current projects” in the Supplemental Information for additional details.
(3)In addition to the projects represented, we are evaluating one priority anticipated development project that could commence active construction in 2024 and may have initial delivery in 2025.
(4)72% of the leased RSF of our value-creation projects was generated from our existing tenant base.

Strong balance sheet management
Key metrics as of or for the three months ended March 31, 2024
•$34.4 billion in total market capitalization.
•$22.2 billion in total equity capitalization, which ranks in the top 10% among all publicly traded U.S. REITs.
1Q24 Target
Quarter Trailing
4Q24
Annualized 12 Months Annualized
Net debt and preferred stock to Adjusted EBITDA 5.2x 5.6x Less than or equal to 5.1x
Fixed-charge coverage ratio 4.7x 4.7x Greater than or equal to 4.5x
Key capital events
•In February 2024, we issued $1.0 billion of unsecured senior notes payable with a weighted-average interest rate of 5.48% and a weighted-average maturity of 23.1 years. The unsecured senior notes include:
•$400.0 million of 5.25% unsecured senior notes due 2036; and
•$600.0 million of 5.625% unsecured senior notes due 2054.
•In January 2024, our ATM program became inactive upon expiration of the associated shelf registration. In February 2024, we entered into a new ATM common stock offering program, which allows us to sell up to an aggregate of $1.5 billion of our common stock. As of April 22, 2024, the full amount remained available for future sales of our common stock.
Investments
•As of March 31, 2024:
•Our non-real estate investments aggregated $1.5 billion.
•Unrealized gains presented in our consolidated balance sheet were $220.2 million, comprising gross unrealized gains and losses aggregating $320.4 million and $100.2 million, respectively.
•Investment income of $43.3 million for 1Q24 presented in our consolidated statement of operations consisted of $28.8 million of realized gains, partially offset by impairment charges of $14.7 million, and $29.2 million of unrealized gains.

Other key highlights
Key items included in net income attributable to Alexandria’s common stockholders:
1Q24 1Q23 1Q24 1Q23
(in millions, except per share amounts) Amount Per Share – Diluted
Unrealized gains (losses) on non-real estate investments $ 29.2  $ (65.9) $ 0.17  $ (0.39)
Gain on sales of real estate 0.4  —  —  — 
Impairment of non-real estate investments (14.7) —  (0.09) — 
Total
$ 14.9  $ (65.9) $ 0.08  $ (0.39)
Refer to “Funds from operations and funds from operations per share” in the Earnings Press Release for additional details.


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First Quarter Ended March 31, 2024 Financial and Operating Results (continued)
March 31, 2024
Industry and corporate responsibility leadership: catalyzing and leading the way for positive change to benefit human health and society
•In March 2024, Alexandria was named one of Newsweek’s Most Trustworthy Companies in America for the second consecutive year based on three touchpoints of trust: customer trust, investor trust, and employee trust. On the 2024 list, Alexandria holds the top rank among the three S&P 500 REITs recognized in the real estate and housing category.
•In March 2024, Alexandria’s executive chairman and founder, Joel S. Marcus, was selected to receive the inaugural Bisnow Life Sciences Icon & Influencer Award. This prestigious award highlights Mr. Marcus and the company's significant contributions to and lasting impact on the life science real estate sector and broader life science industry. Mr. Marcus will accept the award on behalf of Alexandria at Bisnow's International Life Sciences & Biotech Conference in September 2024.
•During 1Q24, Alexandria earned several awards in recognition of operational excellence in asset management, leasing, real estate transactions, and sustainability across our regions:
•In our Greater Boston market, Alexandria won two 2023 Commercial Broker Association Achievement Awards: Life Science Deal of the Year for our lease with Novo Nordisk at 60 Sylvan Road on the Alexandria Center® for Life Science – Waltham mega campus and Investment Sale of the Year – Urban for our strategic sale of partial interest in 15 Necco Street.
•In our San Francisco Bay Area market, the Alexandria Center® for Life Science – San Carlos mega campus won a TOBY (The Outstanding Building of the Year) Award from BOMA (Building Owners and Managers Association) in the region’s new Life Science category. Alexandria also received a San Francisco Business Times’ 2024 Real Estate Deal of the Year Award for our lease with CARGO Therapeutics, a clinical-stage biotechnology company, at 835 Industrial Road on this mega campus.
•In our Seattle market, Alexandria was an honoree in the Water Stewardship category of the Puget Sound Business Journal’s 2024 Environmental and Sustainability Awards in recognition of our implementation of an innovative energy district at the Alexandria Center® for Life Science – South Lake Union mega campus featuring one of the largest wastewater heat recovery systems in North America. This wastewater heat recovery system, which will provide an alternative energy source to heat our buildings and enhance building resilience and operating performance, demonstrates our continued focus on reducing greenhouse gas emissions in our laboratory facilities.
•In our Research Triangle market, we earned the Top Life Sciences/Laboratory Lease in the Triangle Business Journal’s 2024 SPACE Awards for our lease with Pairwise, a health-focused food and agriculture company, at 110 and 112 TW Alexander Drive on the Alexandria Center® for Sustainable Technologies mega campus. The annual SPACE Awards recognize the Research Triangle’s top commercial real estate developments and transactions.
•In February 2024, Alexandria, in partnership with former congressman Patrick J. Kennedy and The Kennedy Forum, held its second Alexandria Summit® on Mental Health in Washington, DC. Alexandria convened a diverse set of key decision makers, influential life science industry thought leaders, members of Congress, regulatory agency executives, and other key policymakers to advance the development of novel, effective psychiatric therapies to address vast unmet need.
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 mega campuses in AAA innovation cluster locations, including Greater Boston, the San Francisco Bay Area, San Diego, Seattle, Maryland, Research Triangle, and New York City. Alexandria has a total market capitalization of $34.4 billion and an asset base in North America of 74.1 million SF as of March 31, 2024, which includes 42.2 million RSF of operating properties, 5.3 million RSF of Class A/A+ properties undergoing construction and one committed near-term project expected to commence construction in the next two years, 2.5 million RSF of priority anticipated development and redevelopment projects, and 24.1 million SF of future development projects. Alexandria has a longstanding and proven track record of developing Class A/A+ properties clustered in life science 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 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.

Guidance
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March 31, 2024
(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 January 29, 2024 include updates to earnings per share, funds from operations per share, and funds from operations per share, as adjusted, as shown in the table below. We updated our guidance range for 2024 earnings per share and funds from operations per share. In addition, we narrowed our guidance range for 2024 funds from operations per share, as adjusted, to 12 cents from 20 cents with the midpoint of $9.47 unchanged from our prior guidance on January 29, 2024.

Projected 2024 Earnings per Share and Funds From Operations per Share Attributable to Alexandria’s Common Stockholders – Diluted
As of 4/22/2024 As of 1/29/2024
Earnings per share(2)
$3.60 to $3.72 $3.49 to $3.69
Depreciation and amortization of real estate assets 5.95 5.95
Allocation to unvested restricted stock awards (0.06) (0.07)
Funds from operations per share(1)
$9.49 to $9.61 $9.37 to $9.57
Unrealized gains on non-real estate investments (0.17)
Impairment of non-real estate investments 0.09
Funds from operations per share, as adjusted(1)
$9.41 to $9.53 $9.37 to $9.57
Midpoint $9.47 $9.47
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(5)
$ 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, sales of partial interests, and common equity(3) (refer to page 6)
900  1,900  1,400 
Total sources of capital $ 2,200  $ 3,300  $ 2,750 
Uses of capital:
Construction $ 1,950  $ 2,550  $ 2,250 
Acquisitions (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(4)
$ 1,000  $ 1,000  $ 1,000 
Unsecured senior line of credit, commercial paper, and other (100) (100) (100)
Net incremental debt $ 900  $ 900  $ 900 

(1)Refer to “Definitions and reconciliations” in the Supplemental Information for additional details.
(2)Excludes unrealized gains or losses on non-real estate investments after March 31, 2024 that are required to be recognized in earnings and are excluded from funds from operations per share, as adjusted.
(3)We expect to continue pursuing our strategy to fund a significant portion of our capital requirements for the year ending December 31, 2024 with dispositions and sales of partial interests and are actively pursuing several dispositions and partial interest sale opportunities. In February 2024, we entered into a new ATM common stock offering program, which allows us to sell up to an aggregate of $1.5 billion of our common stock. As of April 22, 2024, the full amount remained available for future sales of our common stock.
(4)In February 2024, we issued $1.0 billion of unsecured senior notes payable with a weighted-average interest rate of 5.48% and a weighted-average maturity of 23.1 years. The unsecured senior notes consisted of $400.0 million of 5.25% unsecured senior notes due 2036 and $600.0 million of 5.625% unsecured senior notes due 2054. Our 2024 guidance for issuance of unsecured senior notes payable assumes we issue new unsecured senior notes payable in 2025 to fund the repayment of our $600.0 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 issuance of additional unsecured senior notes payable.
(5)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” in the Supplemental Information for additional details.

Acquisitions
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March 31, 2024
(Dollars in thousands)
Property Submarket/Market Date of
Purchase
Operating
Occupancy
Future Development RSF(1)
Purchase Price
Completed in 1Q24:
285, 299, 307, and 345 Dorchester Avenue (60% interest in consolidated JV) Seaport Innovation District/Greater Boston 1/30/24 N/A 1,040,000  $ 155,321 
Other 39,490 
194,811 
Completed in April 2024 7,000 
Pending acquisitions subject to signed letters of intent or purchase and sale agreements 75,350 
$ 277,161 
2024 guidance range $250,000 – $750,000

(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.


Dispositions and Sales of Partial Interests
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March 31, 2024
(Dollars in thousands)
Property Submarket/Market Date of Sale Interest Sold RSF Sales Price
Value harvesting dispositions of 100% interest in properties not integral to our mega campus strategy
Completed in 1Q24:
99 A Street(1)
Seaport Innovation District/Greater Boston 3/8/24 100  % 235,000  $ 13,350 
Other 3,863 
17,213 
Pending transactions subject to letters of intent or purchase and sale agreement negotiations 258,095 
Additional targeted dispositions and sales of partial interests TBD
$ 275,308 

(1)We completed the sale during the three months ended March 31, 2024 and recognized no gain or loss.



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Earnings Call Information and About the Company
March 31, 2024
We will host a conference call on Tuesday, April 23, 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 first quarter ended March 31, 2024. 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, April 23, 2024. The replay number is (877) 344-7529 or (412) 317-0088, and the access code is 1133562.

Additionally, a copy of this Earnings Press Release and Supplemental Information for the first quarter ended March 31, 2024 is available in the “For Investors” section of our website at www.are.com or by following this link: https://www.are.com/fs/2024q1.pdf.

For any questions, please contact corporateinformation@are.com; 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

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 mega campuses in AAA innovation cluster locations, including Greater Boston, the San Francisco Bay Area, San Diego, Seattle, Maryland, Research Triangle, and New York City. Alexandria has a total market capitalization of $34.4 billion and an asset base in North America of 74.1 million SF as of March 31, 2024, which includes 42.2 million RSF of operating properties, 5.3 million RSF of Class A/A+ properties undergoing construction and one committed near-term project expected to commence construction in the next two years, 2.5 million RSF of priority anticipated development and redevelopment projects, and 24.1 million SF of future development projects. Alexandria has a longstanding and proven track record of developing Class A/A+ properties clustered in life science 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 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.

Forward-Looking Statements

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, 2024 funds from operations per share, 2024 funds from operations per share, as adjusted, 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.

Consolidated Statements of Operations
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March 31, 2024
(Dollars in thousands, except per share amounts)
  Three Months Ended
  3/31/24

12/31/23 9/30/23 6/30/23 3/31/23
Revenues:          
Income from rentals $ 755,551  $ 742,637  $ 707,531  $ 704,339  $ 687,949 
Other income 13,557  14,579  6,257  9,561  12,846 
Total revenues 769,108  757,216  713,788  713,900  700,795 
Expenses:
Rental operations 218,314  222,726  217,687  211,834  206,933 
General and administrative 47,055  59,289  45,987  45,882  48,196 
Interest 40,840  31,967  11,411  17,072  13,754 
Depreciation and amortization 287,554  285,246  269,370  273,555  265,302 
Impairment of real estate —  271,890  20,649  168,575  — 
Total expenses 593,763  871,118  565,104  716,918  534,185 
Equity in earnings of unconsolidated real estate joint ventures 155  363  242  181  194 
Investment income (loss) 43,284  8,654  (80,672) (78,268) (45,111)
Gain on sales of real estate 392  62,227  —  214,810  — 
Net income (loss) 219,176  (42,658) 68,254  133,705  121,693 
Net income attributable to noncontrolling interests (48,631) (45,771) (43,985) (43,768) (43,831)
Net income (loss) attributable to Alexandria Real Estate Equities, Inc.’s stockholders 170,545  (88,429) 24,269  89,937  77,862 
Net income attributable to unvested restricted stock awards
(3,659) (3,498) (2,414) (2,677) (2,606)
Net income (loss) attributable to Alexandria Real Estate Equities, Inc.’s common stockholders $ 166,886  $ (91,927) $ 21,855  $ 87,260  $ 75,256 
Net income (loss) per share attributable to Alexandria Real Estate Equities, Inc.’s common stockholders:
Basic $ 0.97  $ (0.54) $ 0.13  $ 0.51  $ 0.44 
Diluted $ 0.97  $ (0.54) $ 0.13  $ 0.51  $ 0.44 
Weighted-average shares of common stock outstanding:
Basic 171,949  171,096  170,890  170,864  170,784 
Diluted 171,949  171,096  170,890  170,864  170,784 
Dividends declared per share of common stock $ 1.27  $ 1.27  $ 1.24  $ 1.24  $ 1.21 







Consolidated Balance Sheets
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March 31, 2024
(In thousands)

3/31/24 12/31/23 9/30/23 6/30/23 3/31/23
Assets        
Investments in real estate $ 32,323,138  $ 31,633,511  $ 31,712,731  $ 31,178,054  $ 30,889,395 
Investments in unconsolidated real estate joint ventures 40,636  37,780  37,695  37,801  38,355 
Cash and cash equivalents 722,176  618,190  532,390  924,370  1,263,452 
Restricted cash 9,519  42,581  35,321  35,920  34,932 
Tenant receivables 7,469  8,211  6,897  6,951  8,197 
Deferred rent 1,138,936  1,050,319  1,012,666  984,366  974,865 
Deferred leasing costs 520,616  509,398  512,216  520,610  527,848 
Investments 1,511,588  1,449,518  1,431,766  1,495,994  1,573,018 
Other assets 1,424,968  1,421,894  1,501,611  1,475,191  1,602,403 
Total assets $ 37,699,046  $ 36,771,402  $ 36,783,293  $ 36,659,257  $ 36,912,465 
Liabilities, Noncontrolling Interests, and Equity
Secured notes payable $ 130,050  $ 119,662  $ 109,110  $ 91,939  $ 73,645 
Unsecured senior notes payable 12,087,113  11,096,028  11,093,725  11,091,424  11,089,124 
Unsecured senior line of credit and commercial paper —  99,952  —  —  374,536 
Accounts payable, accrued expenses, and other liabilities
2,503,831  2,610,943  2,653,126  2,494,087  2,479,047 
Dividends payable 222,134  221,824  214,450  214,555  209,346 
Total liabilities 14,943,128  14,148,409  14,070,411  13,892,005  14,225,698 
Commitments and contingencies
Redeemable noncontrolling interests 16,620  16,480  51,658  52,628  44,862 
Alexandria Real Estate Equities, Inc.’s stockholders’ equity:
Common stock
1,720  1,719  1,710  1,709  1,709 
Additional paid-in capital 18,434,690  18,485,352  18,651,185  18,812,318  18,902,821 
Accumulated other comprehensive loss (23,815) (15,896) (24,984) (16,589) (20,536)
Alexandria Real Estate Equities, Inc.’s stockholders’ equity 18,412,595  18,471,175  18,627,911  18,797,438  18,883,994 
Noncontrolling interests 4,326,703  4,135,338  4,033,313  3,917,186  3,757,911 
Total equity 22,739,298  22,606,513  22,661,224  22,714,624  22,641,905 
Total liabilities, noncontrolling interests, and equity
$ 37,699,046  $ 36,771,402  $ 36,783,293  $ 36,659,257  $ 36,912,465 


Funds From Operations and Funds From Operations per Share
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March 31, 2024
(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
3/31/24 12/31/23 9/30/23 6/30/23 3/31/23
Net income (loss) attributable to Alexandria’s common stockholders $ 166,886  $ (91,927) $ 21,855  $ 87,260  $ 75,256 
Depreciation and amortization of real estate assets 284,950  281,939  266,440  270,026  262,124 
Noncontrolling share of depreciation and amortization from consolidated real estate JVs
(30,904) (30,137) (28,814) (28,220) (28,178)
Our share of depreciation and amortization from unconsolidated real estate JVs
1,034  965  910  855  859 
Gain on sales of real estate (392) (62,227) —  (214,810) — 
Impairment of real estate – rental properties
—  263,982  19,844  166,602  — 
Allocation to unvested restricted stock awards
(3,469) (2,268) (838) (872) (1,359)
Funds from operations attributable to Alexandria’s common stockholders – diluted(1)
418,105  360,327  279,397  280,841  308,702 
Unrealized (gains) losses on non-real estate investments (29,158) (19,479) 77,202  77,897  65,855 
Impairment of non-real estate investments 14,698 
(2)
23,094  28,503  22,953  — 
Impairment of real estate
—  7,908  805  1,973  — 
Acceleration of stock compensation expense due to executive officer resignations —  18,436  1,859  —  — 
Allocation to unvested restricted stock awards
247  (472) (1,330) (1,285) (867)
Funds from operations attributable to Alexandria’s common stockholders – diluted, as adjusted $ 403,892  $ 389,814  $ 386,436  $ 382,379  $ 373,690 

Refer to “Definitions and reconciliations” in the Supplemental Information for additional details.

(1)Calculated in accordance with standards established by the Nareit Board of Governors.
(2)Primarily related to one non-real estate investment in a privately held entity that does not report NAV.

Funds From Operations and Funds From Operations per Share (continued)
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March 31, 2024
(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
3/31/24 12/31/23 9/30/23 6/30/23 3/31/23
Net income (loss) per share attributable to Alexandria’s common stockholders – diluted $ 0.97  $ (0.54) $ 0.13  $ 0.51  $ 0.44 
Depreciation and amortization of real estate assets
1.48  1.48  1.40  1.42  1.38 
Gain on sales of real estate —  (0.36) —  (1.26) — 
Impairment of real estate – rental properties —  1.54  0.12  0.98  — 
Allocation to unvested restricted stock awards
(0.02) (0.01) (0.01) (0.01) (0.01)
Funds from operations per share attributable to Alexandria’s common stockholders – diluted
2.43  2.11  1.64  1.64  1.81 
Unrealized (gains) losses on non-real estate investments (0.17) (0.11) 0.45  0.46  0.39 
Impairment of non-real estate investments 0.09  0.13  0.17  0.13  — 
Impairment of real estate —  0.05  —  0.02  — 
Loss on early extinguishment of debt
—  —  —  —  — 
Acceleration of stock compensation expense due to executive officer resignations —  0.11  0.01  —  — 
Allocation to unvested restricted stock awards
—  (0.01) (0.01) (0.01) (0.01)
Funds from operations per share attributable to Alexandria’s common stockholders – diluted, as adjusted
$ 2.35  $ 2.28  $ 2.26  $ 2.24  $ 2.19 
Weighted-average shares of common stock outstanding – diluted 171,949  171,096  170,890  170,864  170,784 

Refer to “Definitions and reconciliations” in the Supplemental Information for additional details.








SUPPLEMENTAL
INFORMATION









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Company Profile
March 31, 2024
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 mega campuses in AAA innovation cluster locations, including Greater Boston, the San Francisco Bay Area, San Diego, Seattle, Maryland, Research Triangle, and New York City. Alexandria has a total market capitalization of $34.4 billion and an asset base in North America of 74.1 million SF as of March 31, 2024, which includes 42.2 million RSF of operating properties, 5.3 million RSF of Class A/A+ properties undergoing construction and one committed near-term project expected to commence construction in the next two years, 2.5 million RSF of priority anticipated development and redevelopment projects, and 24.1 million SF of future development projects. Alexandria has a longstanding and proven track record of developing Class A/A+ properties clustered in life science 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 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.

Tenant base

Alexandria is known for our high-quality and diverse tenant base, with 52% of our 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 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 life science real estate. Alexandria’s highly experienced management team includes regional market directors with leading reputations and longstanding relationships within the life science communities in their respective innovation clusters. We believe that our experience, expertise, reputation, and key relationships in the real estate and life science industries provide Alexandria significant competitive advantages in attracting new business opportunities.
Alexandria’s executive and senior management team consists of 64 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 &
Founder
Chief Executive Officer &
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 &
Treasurer
Chief Development Officer
Lawrence J. Diamond Joseph Hakman
Co-Chief Operating Officer & Regional Market Director – Maryland Co-Chief Operating Officer &
Chief Strategic Transactions Officer
Hart Cole Jackie B. Clem
Executive Vice President – Capital Markets/Strategic Operations &
Co-Regional Market Director – Seattle
General Counsel & Secretary
Gary D. Dean Andres R. Gavinet
Executive Vice President –
Real Estate Legal Affairs
Chief Accounting Officer
Onn C. Lee Kristina A. Fukuzaki-Carlson
Executive Vice President –
Accounting
Executive Vice President –
Business Operations
Madeleine T. Alsbrook
Executive Vice President –
Talent Management

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Investor Information
March 31, 2024
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
www.are.com     Website: investor.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   Alan Zigman
(212) 526-3521 / (212) 526-6961 (646) 376-5303   (416) 507-2556
J.P. Morgan Securities LLC
Mark Streeter
(212) 834-5086

Financial and Asset Base Highlights
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March 31, 2024
(Dollars in thousands, except per share amounts)
 
Three Months Ended (unless stated otherwise)
3/31/24 12/31/23 9/30/23 6/30/23 3/31/23
Selected financial data from consolidated financial statements and related information
Rental revenues
$ 581,400  $ 561,428  $ 526,352  $ 537,889  $ 518,302 
Tenant recoveries
$ 174,151  $ 181,209  $ 181,179  $ 166,450  $ 169,647 
General and administrative expenses $ 47,055  $ 59,289  $ 45,987  $ 45,882  $ 48,196 
General and administrative expenses as a percentage of net operating income –
trailing 12 months
9.5% 9.8% 9.3% 9.7% 9.9%
Operating margin 72% 71% 70% 70% 70%
Adjusted EBITDA margin
72% 69% 69% 70% 69%
Adjusted EBITDA – quarter annualized
$ 2,206,428  $ 2,094,988  $ 1,971,440  $ 1,986,760  $ 1,936,884 
Adjusted EBITDA – trailing 12 months
$ 2,064,904  $ 1,997,518  $ 1,935,505  $ 1,895,336  $ 1,848,018 
Net debt at end of period
$ 11,569,666  $ 10,731,200  $ 10,713,620  $ 10,303,736  $ 10,321,752 
Net debt and preferred stock to Adjusted EBITDA – quarter annualized 5.2x 5.1x 5.4x 5.2x 5.3x
Net debt and preferred stock to Adjusted EBITDA – trailing 12 months 5.6x 5.4x 5.5x 5.4x 5.6x
Total debt and preferred stock at end of period $ 12,217,163  $ 11,315,642  $ 11,202,835  $ 11,183,363  $ 11,537,305 
Gross assets at end of period $ 42,915,903  $ 41,756,421  $ 41,639,729  $ 41,306,090  $ 41,474,319 
Total debt and preferred stock to gross assets at end of period 28% 27% 27% 27% 28%
Fixed-charge coverage ratio – quarter annualized
4.7x 4.5x 4.8x 4.7x 5.0x
Fixed-charge coverage ratio – trailing 12 months
4.7x 4.7x 4.9x 4.9x 5.0x
Unencumbered net operating income as a percentage of total net operating income
99.3% 99.8% 99.8% 99.8% 99.8%
Closing stock price at end of period
$ 128.91  $ 126.77  $ 100.10  $ 113.49  $ 125.59 
Common shares outstanding (in thousands) at end of period
172,008  171,911  170,997  170,870  170,860 
Total equity capitalization at end of period
$ 22,173,547  $ 21,793,107  $ 17,116,784  $ 19,392,011  $ 21,458,270 
Total market capitalization at end of period
$ 34,390,710  $ 33,108,749  $ 28,319,619  $ 30,575,374  $ 32,995,575 
Dividend per share – quarter/annualized
$1.27/$5.08 $1.27/$5.08 $1.24/$4.96 $1.24/$4.96 $1.21/$4.84
Dividend payout ratio for the quarter
54% 56% 55% 55% 55%
Dividend yield – annualized
3.9% 4.0% 5.0% 4.4% 3.9%
Amounts related to operating leases:
Operating lease liabilities at end of period $ 381,578  $ 382,883  $ 384,958  $ 386,545  $ 405,190 
Rent expense
$ 8,683  $ 8,964  $ 8,317  $ 8,518  $ 8,536 
Capitalized interest
$ 81,840  $ 89,115  $ 96,119  $ 91,674  $ 87,070 
Average real estate basis capitalized during the period $ 8,163,289  $ 9,116,700  $ 9,872,650  $ 9,580,655  $ 9,300,498 
Weighted-average interest rate for capitalization of interest during the period
3.92% 3.92% 3.77% 3.77% 3.69%
Refer to “Definitions and reconciliations” in the Supplemental Information for additional details.

Financial and Asset Base Highlights (continued)
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March 31, 2024
(Dollars in thousands, except annual rental revenue per occupied RSF amounts)
 
Three Months Ended (unless stated otherwise)
3/31/24 12/31/23 9/30/23 6/30/23 3/31/23
Amounts included in funds from operations and non-revenue-enhancing capital expenditures
Straight-line rent revenue
$ 48,251  $ 41,586  $ 29,805  $ 29,335  $ 33,191 
Amortization of acquired below-market leases
$ 30,340  $ 23,684  $ 23,222  $ 24,789  $ 21,636 
Straight-line rent expense on ground leases $ 358  $ 366  $ 372  $ 373  $ 369 
Stock compensation expense
$ 17,125  $ 34,592  $ 16,288  $ 15,492  $ 16,486 
Amortization of loan fees
$ 4,142  $ 4,059  $ 4,059  $ 3,729  $ 3,639 
Amortization of debt discounts $ (318) $ (309) $ (306) $ (304) $ (288)
Non-revenue-enhancing capital expenditures:
Building improvements
$ 4,293  $ 4,167  $ 4,510  $ 4,376  $ 4,334 
Tenant improvements and leasing commissions
$ 21,144  $ 12,155  $ 7,560  $ 38,587  $ 18,586 
Funds from operations attributable to noncontrolling interests $ 79,535  $ 75,908  $ 72,799  $ 71,988  $ 72,009 
Operating statistics and related information (at end of period)
Number of properties – North America
410  411  419  414  433 
RSF – North America (including development and redevelopment projects under construction)
47,206,639  47,228,485  47,089,826  46,408,793  47,443,194 
Total square feet – North America
74,069,321  73,532,305  75,057,289  74,854,150  75,607,592 
Annual rental revenue per occupied RSF – North America $ 56.86  $ 56.08  $ 53.34  $ 53.09  $ 52.46 
Occupancy of operating properties – North America 94.6% 94.6% 93.7% 93.6% 93.6%
Occupancy of operating and redevelopment properties – North America 90.2% 90.2% 89.4% 89.2% 88.5%
Weighted-average remaining lease term (in years)
7.5 7.4 7.0 7.2 7.2
Total leasing activity – RSF
1,142,857  889,737  867,582  1,325,326  1,223,427 
Lease renewals and re-leasing of space – change in average new rental rates over expiring rates:
Rental rate increases
33.0% 9.2% 28.8% 16.6% 48.3%
Rental rate increases (cash basis) 19.0% 5.5% 19.7% 8.3% 24.2%
RSF (included in total leasing activity above) 994,770  477,142  396,334  1,052,872  1,120,038 
Top 20 tenants:
Annual rental revenue $ 802,605  $ 769,066  $ 655,990  $ 629,362  $ 634,461 
Annual rental revenue from investment-grade or publicly traded large cap tenants 92% 92% 91% 90% 90%
Weighted-average remaining lease term (in years) 9.7 9.6 8.9 9.4 9.5
Same property – percentage change over comparable quarter from prior year:
Net operating income increases 1.0% 0.7% 3.1% 3.0% 3.7%
Net operating income increases (cash basis) 4.2% 0.8% 4.6% 4.9% 9.0%
Refer to “Definitions and reconciliations” in the Supplemental Information for additional details.

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High-Quality and Diverse Client Base
March 31, 2024
Stable Cash Flows From Our High-Quality and Diverse Mix of Approximately 800 Tenants
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Investment-Grade or Publicly Traded
Large Cap Tenants
92%
of ARE’s Top 20 Tenant
Annual Rental Revenue
52%
Percentage of ARE’s Annual Rental Revenue of ARE’s Total
Annual Rental Revenue


As of March 31, 2024. Annual rental revenue represents amounts in effect as of March 31, 2024. Refer to “Definitions and reconciliations” in the Supplemental Information for additional details, including our methodology of calculating annual rental revenue from unconsolidated real estate joint ventures.

(1)Represents annual rental revenue generated from space that is currently targeted for a future change in use to laboratory space, including 1.0% of annual rental revenue that is generated from covered land play projects for future development opportunities. The weighted-average remaining term of these leases is 3.6 years.
(2)Represents the percentage of our annual rental revenue generated by “Other” tenants, which 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.


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High-Quality and Diverse Client Base (continued)
March 31, 2024
Long-Duration and Stable Cash Flows From
High-Quality and Diverse Tenants

Sustained Strength in Tenant Collections(1)
99.9% 99.7%
1Q24 April 2024
Long-Duration Lease Terms
9.7 Years 7.5 Years
Top 20 Tenants All Tenants
Weighted-Average Remaining Term(2)

(1)Represents the portion of total receivables billed for each period collected as of April 22, 2024.
(2)Based on annual rental revenue in effect as of March 31, 2024.

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Occupancy
March 31, 2024
Solid Historical Occupancy of 96% Over Past 10 Years(1) From
Historically Strong Demand for Our Class A/A+ Properties in AAA Locations

Mega Campuses Occupancy Across Key Locations
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Percentage of ARE’s
Annual Rental Revenue


As of March 31, 2024. Annual rental revenue represents amounts in effect as of March 31, 2024. Refer to “Definitions and reconciliations” in the Supplemental Information for additional details.

(1)Represents average occupancy of operating properties as of each December 31 from 2015 through 2023 and as of March 31, 2024.
(2)Refer to footnote 1 under “Summary of occupancy” in “Summary of properties and occupancy” in the Supplemental Information for additional details.


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Key Operating Metrics
March 31, 2024
Historical Same Property
Net Operating Income Growth
Historical Rental Rate Growth:
Renewed/Re-Leased Space
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Margins(1)
Favorable Lease Structure(2)
Operating Adjusted EBITDA Strategic Lease Structure by Owner and Operator of Collaborative
Life Science Mega Campuses
72% 72% Increasing cash flows
Percentage of leases containing
annual rent escalations
96%
Stable cash flows
Weighted-Average Lease Term
of Executed Leases(3)
Percentage of triple
net leases
94%
8.8 Years Lower capex burden
Percentage of leases providing for the
recapture of capital expenditures
93%
Refer to “Same property performance” and “Definitions and reconciliations” in the 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)For the three months ended March 31, 2024.
(2)Percentages calculated based on our annual rental revenue in effect as of March 31, 2024.
(3)Represents the weighted-average lease term of executed leases for the 10-year period from December 31, 2015 through March 31, 2024.

Same Property Performance
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March 31, 2024
(Dollars in thousands)
Same Property Financial Data
Three Months Ended March 31, 2024
Same Property Statistical Data
Three Months Ended March 31, 2024
Percentage change over comparable period from prior year:
Number of same properties
347
Net operating income increase
1.0%
Rentable square feet
34,698,081
Net operating income increase (cash basis)
4.2%
Occupancy – current-period average
94.5%
Operating margin
70%
Occupancy – same-period prior-year average
94.9%

  Three Months Ended March 31,
2024 2023 $ Change % Change
Income from rentals:
Same properties $ 452,992  $ 445,043  $ 7,949  1.8  %
Non-same properties 128,408  73,259  55,149  75.3 
Rental revenues 581,400  518,302  63,098  12.2 
Same properties 157,402  152,073  5,329  3.5 
Non-same properties 16,749  17,574  (825) (4.7)
Tenant recoveries 174,151  169,647  4,504  2.7 
Income from rentals 755,551  687,949  67,602  9.8 
Same properties 338  437  (99) (22.7)
Non-same properties 13,219  12,409  810  6.5 
Other income 13,557  12,846  711  5.5 
Same properties 610,732  597,553  13,179  2.2 
Non-same properties 158,376  103,242  55,134  53.4 
Total revenues 769,108  700,795  68,313  9.7 
Same properties 183,466  174,580  8,886  5.1 
Non-same properties 34,848  32,353  2,495  7.7 
Rental operations 218,314  206,933  11,381  5.5 
Same properties 427,266  422,973  4,293  1.0 
Non-same properties 123,528  70,889  52,639  74.3 
Net operating income $ 550,794  $ 493,862  $ 56,932  11.5  %
Net operating income – same properties
$ 427,266  $ 422,973  $ 4,293  1.0  %
Straight-line rent revenue (14,954) (26,489) 11,535  (43.5)
Amortization of acquired below-market leases (15,497) (15,647) 150  (1.0)
Net operating income – same properties (cash basis)
$ 396,815  $ 380,837  $ 15,978  4.2  %

Refer to “Same property comparisons” under “Definitions and reconciliations” in the Supplemental Information for additional details, including 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.



Leasing Activity
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March 31, 2024
(Dollars per RSF)
Three Months Ended Year Ended
March 31, 2024 December 31, 2023
Including
Straight-Line Rent
Cash Basis Including
Straight-Line Rent
Cash Basis
Leasing activity:
Renewed/re-leased space(1)
Rental rate changes
33.0%
(2)
19.0%
(2)
29.4% 15.8%
New rates
$81.17  $78.61  $52.35  $50.82 
Expiring rates
$61.01  $66.04  $40.46  $43.87 
RSF
994,770  3,046,386 
Tenant improvements/leasing commissions
$21.97  $26.09 
Weighted-average lease term
8.5 years 8.7 years
Developed/redeveloped/previously vacant space leased(3)
New rates
$76.63  $76.79  $65.66  $59.74 
RSF
148,087  1,259,686 
Weighted-average lease term
5.6 years 13.8 years
Leasing activity summary (totals):
New rates
$80.90  $78.50  $56.09  $53.33 
RSF
1,142,857  4,306,072 
Weighted-average lease term
8.4 years 11.3 years
Lease expirations(1)
Expiring rates
$55.76  $59.39  $43.84  $45.20 
RSF 1,412,931 
(4)
5,027,773 


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

(1)Excludes month-to-month leases aggregating 142,020 RSF and 86,092 RSF as of March 31, 2024 and December 31, 2023, respectively. During the trailing twelve months ended March 31, 2024, we granted free rent concessions averaging 0.8 months per annum.
(2)Rental rate changes can experience volatility from quarter to quarter based on the mix of leases executed. Refer to “Guidance” in the Earnings Press Release for rental rate changes expected from leases executed during the year ending December 31, 2024.
(3)Refer to “New Class A/A+ development and redevelopment properties: summary of pipeline” in the Supplemental Information for additional details, including total project costs.
(4)Includes 160,053 RSF, which was an acquired in-place lease, at 311 Arsenal Street in our Cambridge/Inner Suburbs submarket that commenced redevelopment in 1Q24 with initial occupancy expected in 2027.


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Contractual Lease Expirations
March 31, 2024
Year RSF Percentage of
Occupied RSF
Annual Rental Revenue (per RSF)(1)
Percentage of
Annual Rental Revenue
2024
(2)
2,454,461  6.2  % $ 48.04  5.4  %
2025 4,204,286  10.6  % $ 53.73  10.3  %
2026 2,308,196  5.8  % $ 52.11  5.5  %
2027 3,106,423  7.8  % $ 52.39  7.4  %
2028 4,657,935  11.8  % $ 51.60  10.9  %
2029 2,649,318  6.7  % $ 50.78  6.1  %
2030 2,447,767  6.2  % $ 48.68  5.4  %
2031 3,670,568  9.3  % $ 55.33  9.2  %
2032 1,157,219  2.9  % $ 59.50  3.1  %
2033 2,803,731  7.1  % $ 51.78  6.6  %
Thereafter 10,114,906  25.6  % $ 65.43  30.1  %

Market
2024 Contractual Lease Expirations (in RSF)
Annual Rental Revenue
(per RSF)(1)
2025 Contractual Lease Expirations (in RSF)
Annual Rental Revenue
(per RSF)(1)
Leased Negotiating/
Anticipating
Targeted for Future
Development/Redevelopment(3)
Remaining
Expiring
Leases(4)
Total(2)
Leased Negotiating/
Anticipating
Targeted for Future
Development/
Redevelopment(3)
Remaining
Expiring Leases(4)
Total
Committed Near-Term/
Priority Anticipated
Future
Greater Boston 14,075  32,574  148,393  104,500  308,244  607,786  $ 64.26  44,332 

140,684  25,312 

1,076,112 
(5)
1,286,440  $ 71.80 
San Francisco Bay Area 5,998  —  107,250  84,083  367,499  564,830  61.43  35,797  118,591  — 

488,205  642,593  72.20 
San Diego 20,626  —  159,884 
(6)
420,137  60,977 

661,624  24.17  16,891  — 

—  329,258  346,149  42.89 
Seattle —  2,147  —  —  152,552  154,699  22.01  —  —  50,552  350,071  400,623  28.00 
Maryland —  —  —  —  15,819  15,819  25.27  35,055  —  — 

200,156  235,211  28.09 
Research Triangle —  —  —  —  68,960  68,960  55.16  —  —  —  327,850  327,850  48.77 
New York City —  —  —  —  360,636 
(7)
360,636  55.50  —  —  — 

62,224  62,224  105.76 
Texas —  —  —  —  —  —  —  —  —  198,972  604,382  803,354  36.27 
Canada 20,107  —  —  —  —  20,107  26.26  —  —  —  88,412  88,412  20.46 
Non-cluster/other markets —  —  —  —  —  —  —  —  —  —  11,430  11,430  80.31 
Total 60,806  34,721  415,527  608,720  1,334,687  2,454,461  $ 48.04  132,075  259,275  274,836  3,538,100 

4,204,286  $ 53.73 
Percentage of expiring leases 2% 1% 17% 25% 55% 100% 3% 6% 7% 84% 100%
(1)Represents amounts in effect as of March 31, 2024.
(2)Excludes month-to-month leases aggregating 142,020 RSF as of March 31, 2024.
(3)Primarily represents assets that were recently acquired for future value-creation opportunities, for which we expect, 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. As of March 31, 2024, annual rental revenue from these leases expiring in 2024 and 2025 is $39.13 per RSF and $49.71 per RSF, respectively. The weighted-average expiration date of these leases expiring in 2024 and 2025 is July 25, 2024 and January 14, 2025, respectively. Refer to “Investments in real estate” under “Definitions and reconciliations” in the Supplemental Information for additional details, including 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, where we are in early negotiations to renew with the existing tenant.
(5)Includes 966,964 RSF in our Cambridge/Inner Suburbs submarket, with the largest remaining contractual lease expiration aggregating 171,945 RSF at the Alexandria Technology Square® mega campus.
(6)Represents 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 leasing the project and overall market conditions.
(7)Includes 349,947 RSF at 219 East 42nd Street that is classified as held for sale as of March 31, 2024 and expected to be sold in 2024.

Top 20 Tenants
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March 31, 2024
(Dollars in thousands, except average market cap amounts)
92% of Top 20 Tenant Annual Rental Revenue Is From Investment-Grade
or Publicly Traded Large Cap Tenants(1)

Tenant
Remaining Lease Term(1) (in years)
Aggregate
RSF
Annual Rental Revenue(1)
Percentage of Annual Rental Revenue(1)
Investment-Grade
Credit Ratings
Average Market Cap(1)
(in billions)
Moody’s S&P
1 Moderna, Inc. 13.0  1,370,536  $ 124,504  5.6  % $ 41.1 
2 Eli Lilly and Company 8.9  1,134,349  92,595  4.2  A2 A+ $ 529.0 
3 Bristol-Myers Squibb Company 6.9  999,379  75,757  3.4  A2 A+ $ 120.0 
4 Takeda Pharmaceutical Company Limited 11.6  549,759  47,899  2.2  Baa2 BBB+ $ 47.9 
5 Roche 6.1  770,279  45,933  2.1  Aa2 AA $ 235.7 
6 Illumina, Inc. 6.8  955,669  41,588  1.9  Baa3 BBB $ 25.1 
7 Alphabet Inc. 3.2  724,223  39,155  1.8  Aa2 AA+ $ 1,648.5 
8
2seventy bio, Inc.(2)
9.4  312,805  33,543  1.5  $ 0.3 
9 Novartis AG 4.3  450,563  31,196  1.4  A1 AA- $ 228.0 
10 Harvard University 6.4  343,858  29,280  1.3  Aaa AAA $ — 
11 Cloud Software Group, Inc. 2.9 
(3)
292,013  28,537  1.3  $ — 
12 United States Government 6.3  425,166  27,965  1.3  Aaa AA+ $ — 
13 Uber Technologies, Inc. 58.5 
(4)
1,009,188  27,754  1.3  $ 106.1 
14 AstraZeneca PLC 5.6  450,848  27,156  1.2  A3 A $ 211.6 
15 Pfizer Inc. 0.9 
(5)
524,159  25,249  1.1  A1 A+ $ 186.8 
16 Sanofi 6.8  267,278  21,444  1.0  A1 AA $ 129.4 
17 Merck & Co., Inc. 9.3  337,703  21,401  1.0  A1 A+ $ 284.2 
18 New York University 7.9  218,983  21,056  1.0  Aa2 AA- $ — 
19 Massachusetts Institute of Technology 5.2  246,725  20,527  0.9  Aaa AAA $ — 
20 Boston Children’s Hospital 12.6  266,857  20,066  0.9  Aa2 AA $ — 
Total/weighted-average
9.7 
(4)
11,650,340  $ 802,605  36.4  %

Annual rental revenue and RSF include 100% of each property managed by us in North America. Refer to “Annual rental revenue” and “Investment-grade or publicly traded large cap tenants” under “Definitions and reconciliations” in the Supplemental Information for additional details, including our methodology of calculating annual rental revenue from unconsolidated real estate joint ventures and average market capitalization, respectively.

(1)Based on annual rental revenue in effect as of March 31, 2024.
(2)As of December 31, 2023, 2seventy bio, Inc. (“2seventy bio”) held $217.0 million of cash, cash equivalents, and marketable securities. In March 2024, Regeneron Pharmaceuticals, Inc., a publicly traded biotechnology company with investment-grade credit ratings of Baa1 and BBB+ assigned by Moody’s and S&P, respectively, entered into a sublease for approximately 195,000 RSF, or 62.7% of our annual rental revenue generated from 2seventy bio as of March 31, 2024. Additionally, 90.0% of the annual rental revenue generated by 2seventy bio is guaranteed by another related public biotechnology company.
(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 property.
(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 these ground leases, the weighted-average remaining lease term for our top 20 tenants was 7.8 years as of March 31, 2024.
(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 March 31, 2024 and is expected to be sold in 2024.

Summary of Properties and Occupancy
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March 31, 2024
(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
10,849,509  801,949  1,464,104 
(1)
13,115,562  28  % 72  $ 844,713  38  % $ 82.40 
San Francisco Bay Area 7,947,899  498,142  282,054  8,728,095  18  67  460,530  21  65.99 
San Diego
7,841,080  1,187,796  —  9,028,876  19  90  333,605  15  44.67 
Seattle
3,032,918  33,349  34,306  3,100,573  43  130,945  45.48 
Maryland
3,582,162  510,601  —  4,092,763  51  125,237  37.08 
Research Triangle
3,843,673  —  —  3,843,673  39  120,692  32.10 
New York City
922,477  —  —  922,477  72,325  92.89 
Texas 1,845,159  —  73,298  1,918,457  15  57,831  32.94 
Canada
909,760  —  163,211  1,072,971  12  18,895  22.63 
Non-cluster/other markets 347,806  —  —  347,806  10  15,446  58.90 
Properties held for sale
1,035,386  —  —  1,035,386  32,751  N/A
North America 42,157,829  3,031,837  2,016,973  47,206,639  100  % 410  $ 2,212,970  100  % $ 56.86 
5,048,810
(1)Primarily includes our active redevelopment projects aggregating 716,604 RSF at 40, 50, and 60 Sylvan Road and 840 Winter Street located on the 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.

Summary of occupancy

  Operating Properties Operating and Redevelopment Properties
Market 3/31/24 12/31/23 3/31/23 3/31/24 12/31/23 3/31/23
Greater Boston 94.5  % 94.9  % 92.8  % 83.3  % 84.7  % 81.8  %
San Francisco Bay Area 94.4  94.8  95.9  91.2  91.4  92.3 
San Diego 95.2  94.1  94.2  95.2  94.1  94.2 
Seattle 94.9  95.2  96.0  93.9  90.7  90.4 
Maryland 95.4  95.6  95.7  95.4  95.6  94.2 
Research Triangle 97.8  97.8  92.7  97.8  97.8  92.7 
New York City 84.4 
(1)
85.3  89.2  84.4  85.3  89.2 
Texas 95.1  95.1  89.8  91.5  91.5  83.7 
Subtotal 94.9  94.9  93.9  90.6  90.7  89.1 
Canada 91.8  87.1  86.8  77.8  73.0  68.8 
Non-cluster/other markets 75.4  78.5  79.7  75.4  78.5  79.7 
North America 94.6  % 94.6  % 93.6  % 90.2  % 90.2  % 88.5  %
(1)Alexandria Center® for Life Science – New York City mega campus is 94.7% occupied as of March 31, 2024. Occupancy percentage in our New York City market reflects vacancy at the Alexandria Center® for Life Science – Long Island City property, which was 41.7% occupied as of March 31, 2024.

Property Listing
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March 31, 2024
(Dollars in thousands)
Mega Campuses Encompass 74% of Our Annual Rental Revenue
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
2,856,042  —  —  2,856,042  11 $ 277,452  99.6  % 99.6  %
50(1), 60(1), 75/125(1), 100(1), and 225(1) Binney Street, 140 and 215 First Street, 150 Second Street, 300 Third Street(1), 11 Hurley Street, and 100 Edwin H. Land Boulevard
Mega Campus: Alexandria Center® at One Kendall Square
1,371,066  —  —  1,371,066  12 141,023  86.7  86.7 
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  7 116,214  99.9  99.9 
100, 200, 300, 400, 500, 600, and 700 Technology Square
Mega Campus: The Arsenal on the Charles 813,103  147,394  160,053  1,120,550  13 57,946  100.0  83.6 
  311, 321, and 343 Arsenal Street, 300, 400, and 500 North Beacon Street,
     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 517,442  —  —  517,442  5 25,623  100.0  100.0 
99 Coolidge Avenue(1)
116,414  204,395  —  320,809  1 16,099  100.0  100.0 
Cambridge/Inner Suburbs
6,859,351  351,789  160,053  7,371,193  49 634,357  97.1  94.9 
Fenway
Mega Campus: Alexandria Center® for Life Science – Fenway
1,238,805  450,160  133,578  1,822,543  3 93,239  87.8  79.3 
401 and 421(1) Park Drive and 201 Brookline Avenue(1)
Seaport Innovation District
5 and 15(1) Necco Street
441,396  —  —  441,396  2 39,742  75.7  75.7 
Seaport Innovation District 441,396  —  —  441,396  2 39,742  75.7  75.7 
Route 128
Mega Campus: Alexandria Center® for Life Science – Waltham
326,110  —  716,604  1,042,714  5 23,198  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 14,253  100.0  100.0 
Route 128 1,618,324  —  716,604  2,334,928  12 66,510  100.0  69.3 
Other 691,633  —  453,869  1,145,502  6 10,865  79.3  47.9 
Greater Boston
10,849,509  801,949  1,464,104  13,115,562  72 $ 844,713  94.5  % 83.3  %
Refer to “New Class A/A+ development and redevelopment properties: summary of pipeline” and “Definitions and reconciliations” in the Supplemental Information for additional details.

(1)We own a partial interest in this property through a real estate joint venture. Refer to “Joint venture financial information” in the Supplemental Information for additional details.

Property Listing (continued)
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March 31, 2024
(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 –
Mission Bay(1)
2,009,167  212,796  —  2,221,963  10 $ 91,498  94.7  % 94.7  %
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 2,009,167  212,796  —  2,221,963  10 91,498  94.7  94.7 
South San Francisco
Mega Campus: Alexandria Technology Center® – Gateway(1)
1,386,963  —  282,054  1,669,017  12 76,062  84.8  70.5 
600(2), 601, 611, 630(2), 650(2), 651, 681, 685, 701, 751, 901(2), and 951(2)
Gateway Boulevard
Mega Campus: Alexandria Center® for Advanced Technologies – South San Francisco
919,703  —  —  919,703  5 57,789  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 32,059  92.2  92.2 
201 Haskins Way and 400 and 450 East Jamie Court
Mega Campus: Alexandria Center® for Advanced Technologies – Tanforan
445,232  —  —  445,232  2 4,020  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 3,410,971  285,346  282,054  3,978,371  24 180,610  92.7  85.6 
Greater Stanford
Mega Campus: Alexandria Center® for Life Science – San Carlos
739,157  —  —  739,157  9 50,557  99.0  99.0 
825, 835, 960, and 1501-1599 Industrial Road
Alexandria Stanford Life Science District
703,590  —  —  703,590  9 65,124  97.4  97.4 
3160, 3165, 3170, and 3181 Porter Drive and 3301, 3303, 3305, 3307, and 3330 Hillview Avenue
3412, 3420, 3440, 3450, and 3460 Hillview Avenue 340,103  —  —  340,103  5 24,315  82.9  82.9 
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 193,688  —  —  193,688  3 17,845  100.0  100.0 
2100, 2200, 2300, and 2400 Geng Road 162,584  —  —  162,584  4 12,152  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 2,527,761  —  —  2,527,761  33 188,422  96.7  96.7 
San Francisco Bay Area 7,947,899  498,142  282,054  8,728,095  67 $ 460,530  94.4  % 91.2  %
Refer to “New Class A/A+ development and redevelopment properties: summary of pipeline” and “Definitions and reconciliations” in the Supplemental Information for additional details.

(1)We own a partial interest in this property through a real estate joint venture. Refer to “Joint venture financial information” in the Supplemental Information for additional details.
(2)We own 100% of this property.

Property Listing (continued)
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March 31, 2024
(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
Torrey Pines
Mega Campus: One Alexandria Square
833,402  334,996  —  1,168,398  12 $ 49,828  99.9  % 99.9  %
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 14,001  85.8  85.8 
10578, 10618, and 10628 Science Center Drive
ARE Nautilus
218,459  —  —  218,459  4 12,964  86.3  86.3 
3530 and 3550 John Hopkins Court and 3535 and 3565 General Atomics Court
Torrey Pines 1,348,151  334,996  —  1,683,147  19 76,793  94.6  94.6 
University Town Center
Mega Campus: Campus Point by Alexandria(1)
1,666,590  598,029  —  2,264,619  13 78,146  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 29,977  100.0  100.0 
ARE Esplanade 243,084  —  —  243,084  4 10,407  74.6  74.6 
 4755, 4757, and 4767 Nexus Center Drive and 4796 Executive Drive
9625 Towne Centre Drive(1)
163,648  —  —  163,648  1 6,520  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  26 125,929  97.3  97.3 
Sorrento Mesa
Mega Campus: SD Tech by Alexandria(1)
1,066,603  254,771  —  1,321,374  15 41,072  86.3  86.3 
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 801,575  —  —  801,575  7 28,767  100.0  100.0 
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
Scripps Science Park by Alexandria 144,113  —  —  144,113  1 11,379  100.0  100.0 
10102 Hoyt Park Drive
ARE Portola
101,857  —  —  101,857  3 4,022  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 1,909  100.0  100.0 
Sorrento Mesa 3,156,001  254,771  —  3,410,772  38 $ 115,012  93.5  % 93.5  %
Refer to “New Class A/A+ development and redevelopment properties: summary of pipeline” and “Definitions and reconciliations” in the Supplemental Information for additional details.

(1)We own a partial interest in this property through a real estate joint venture. Refer to “Joint venture financial information” in the Supplemental Information for additional details.
(2)We own 100% of this property.

Property Listing (continued)
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March 31, 2024
(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 Valley
3911, 3931, and 3985 Sorrento Valley Boulevard 108,812  —  —  108,812  3 $ 4,936  85.0  % 85.0  %
11045 and 11055 Roselle Street 43,233  —  —  43,233  2 2,273  100.0  100.0 
Sorrento Valley 152,045  —  —  152,045  5 7,209  89.3  89.3 
Other 310,144  —  —  310,144  2 8,662  100.0  100.0 
San Diego
7,841,080  1,187,796  —  9,028,876  90 333,605  95.2  95.2 
Seattle
Lake Union
Mega Campus: Alexandria Center® for Life Science – Eastlake
1,216,520  33,349  —  1,249,869  9 78,770  94.6  94.6 
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 17,795  100.0  100.0 
400 Dexter Avenue North(1)
219 Terry Avenue North
25,966  —  —  25,966  1 432  90.7  90.7 
Lake Union 1,533,240  33,349  —  1,566,589  11 96,997  95.6  95.6 
SoDo
830 4th Avenue South 42,380  —  —  42,380  1 1,010  70.5  70.5 
Elliott Bay
410 West Harrison Street and 410 Elliott Avenue West
36,848  —  —  36,848  2 962  68.0  68.0 
Elliott Bay 36,848  —  —  36,848  2 962  68.0  68.0 
Bothell
Mega Campus: Alexandria Center® for Advanced Technologies – Canyon Park
916,446  —  —  916,446  21 19,827  94.3  94.3 
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
426,628  —  34,306  460,934  6 11,270  97.6  90.4 
3301, 3303, 3305, 3307, 3555, and 3755 Monte Villa Parkway
Bothell 1,343,074  —  34,306  1,377,380  27 31,097  95.4  93.1 
Other 77,376  —  —  77,376  2 879  100.0  100.0 
Seattle
3,032,918  33,349  34,306  3,100,573  43 $ 130,945  94.9  % 93.9  %


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

(1)We own a partial interest in this property through a real estate joint venture. Refer to “Joint venture financial information” in the Supplemental Information for additional details.

Property Listing (continued)
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March 31, 2024
(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 $ 53,643  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 4,210  100.0  100.0 
1405 and 1450(1) Research Boulevard
114,849  —  —  114,849  2 3,018  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 1,779  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 69,165  95.8  95.8 
Gaithersburg
Alexandria Technology Center® – Gaithersburg I
619,241  —  —  619,241  9 19,477  92.6  92.6 
9, 25, 35, 45, 50, and 55 West Watkins Mill Road and 910, 930, and 940 Clopper Road
Alexandria Technology Center® – Gaithersburg II
486,301  —  —  486,301  7 18,679  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 2,897  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 1,327,652  —  —  1,327,652  20 45,629  96.5  96.5 
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 1,295  64.4  64.4 
Beltsville 327,307  —  —  327,307  2 4,316  85.3  85.3 
Northern Virginia
14225 Newbrook Drive 248,186  —  —  248,186  1 6,127  100.0  100.0 
Maryland
3,582,162  510,601  —  4,092,763  51 125,237  95.4  95.4 
Research Triangle
Research Triangle
Mega Campus: Alexandria Center® for Life Science – Durham
2,155,252  —  —  2,155,252  15 52,248  97.4  97.4 
6, 8, 10, 12, 14, 40, 42, and 65 Moore Drive, 21, 25, 27, 29, and 31
Alexandria Way, 2400 Ellis Road, and 14 TW Alexander Drive
Mega Campus: Alexandria Center® for Sustainable Technologies
364,493  —  —  364,493  7 13,388  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 $ 16,561  97.2  % 97.2  %
5 and 9 Laboratory Drive

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

(1)We own a partial interest in this property through a real estate joint venture. Refer to “Joint venture financial information” in the Supplemental Information for additional details.

Property Listing (continued)
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March 31, 2024
(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 (continued)
Research Triangle (continued)
Mega Campus: Alexandria Center® for Advanced Technologies – Research Triangle
344,460  —  —  344,460  4 $ 16,379  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
136,692  —  —  136,692  3 4,255  100.0  100.0 
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
3,843,673  —  —  3,843,673  39 120,692  97.8  97.8 
New York City
New York City
Mega Campus: Alexandria Center® for Life Science – New York City
743,377  —  —  743,377  3 67,046  94.7  94.7 
430 and 450 East 29th Street
Alexandria Center® for Life Science – Long Island City
179,100  —  —  179,100  1 5,279  41.7  41.7 
30-02 48th Avenue
New York City
922,477  —  —  922,477  4 72,325  84.4  84.4 
Texas
Austin
Mega Campus: Intersection Campus 1,525,359  —  —  1,525,359  12 43,029  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 54,659  98.9  98.9 
Greater Houston
Alexandria Center® for Advanced Technologies at The Woodlands
120,828  —  73,298  194,126  1 3,172  41.5 25.8 
8800 Technology Forest Place
Texas 1,845,159  —  73,298  1,918,457  15 57,831  95.1  91.5 
Canada
909,760  —  163,211  1,072,971  12 18,895  91.8  77.8 
Non-cluster/other markets 347,806  —  —  347,806  10 15,446  75.4  75.4 
North America, excluding properties held for sale
41,122,443  3,031,837  2,016,973  46,171,253  403 2,180,219  94.6  % 90.2  %
Properties held for sale
1,035,386  —  —  1,035,386  7 32,751  77.5  % 77.5  %
Total – North America
42,157,829  3,031,837  2,016,973  47,206,639  410 $ 2,212,970 

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


Investments in Real Estate
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March 31, 2024
pipelinev7.jpg
Refer to “Net operating income” under “Definitions and reconciliations” in the Supplemental Information for additional details, including 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 expected to be placed into service primarily commencing from 2Q24 through 4Q27 is projected to be $380 million.
(2)Represents expected incremental annual net operating income to be placed into service from deliveries of projects undergoing construction and one committed near-term project expected to commence construction in the next two years, including partial deliveries of projects that stabilize in future years.
(3)Includes 1.2 million RSF that is expected to stabilize in 2024 and is 98% leased/negotiating. Refer to the initial and stabilized occupancy years under “New Class A/A+ development and redevelopment properties: current projects” in the Supplemental Information for additional details.
(4)In addition to the projects represented, we are evaluating one priority anticipated development project that could commence active construction in 2024 which may have initial delivery in 2025.

Investments in Real Estate
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March 31, 2024
(Dollars in thousands)

Investments in real estate
Development and Redevelopment
Active and Near-Term Construction Future Opportunities Subject to
Market Conditions and Leasing
Operating
Under Construction 64% Leased/Negotiating
Committed
Near Term
51% Leased/Negotiating(1)
Priority Anticipated Future Subtotal Total
Square footage
Operating 41,122,443  —  —  —  —  —  41,122,443 
New Class A/A+ development and redevelopment properties —  5,048,810  492,570  2,919,315  27,176,766  35,637,461  35,637,461 
Value-creation square feet currently included in rental properties(2)
—  —  (159,884) (457,541) (3,108,544) (3,725,969) (3,725,969)
Total square footage, excluding properties held for sale 41,122,443  5,048,810  332,686  2,461,774  24,068,222  31,911,492  73,033,935 
Properties held for sale 1,035,386  —  —  —  —  —  1,035,386 
Total square footage 42,157,829  5,048,810  332,686  2,461,774  24,068,222  31,911,492  74,069,321 
Investments in real estate
Gross book value as of March 31, 2024(3)
$ 28,871,315  $ 3,713,483  $ 50,734  $ 765,486  $ 4,138,977  $ 8,668,680  $ 37,539,995 


(1)Represents one committed near-term project expected to commence construction during the next two years after March 31, 2024.
(2)Refer to “Investments in real estate” under “Definitions and reconciliations” in the Supplemental Information for additional details, including 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” under “Definitions and reconciliations” in the Supplemental Information for additional details.




New Class A/A+ Development and Redevelopment Properties: Recent Deliveries
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March 31, 2024
(Dollars in thousands)
Incremental Annual Net Operating Income Generated
From 1Q24 Deliveries Aggregated $26 Million
99 Coolidge Avenue
500 North Beacon Street and
4 Kingsbury Avenue(1)
651 Gateway Boulevard
Alexandria Center® for Advanced
Technologies – Monte Villa Parkway(2)
Greater Boston/
Cambridge/Inner Suburbs
Greater Boston/
Cambridge/Inner Suburbs
San Francisco Bay Area/
South San Francisco
Seattle/Bothell
116,414 RSF 100,624 RSF 44,652 RSF 180,684 RSF
100% Occupancy 100% Occupancy 100% Occupancy 100% Occupancy
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Property/Market/Submarket Our Ownership Interest RSF Placed in Service
Occupancy Percentage(4)
Total Project Unlevered Yields
1Q24 Delivery Date(3)
Prior to 1/1/24 1Q24 Total Initial Stabilized Initial Stabilized (Cash Basis)
RSF Investment
Development projects
99 Coolidge Avenue/Greater Boston/Cambridge/Inner Suburbs 1/29/24 75.0% 43,568  72,846  116,414  100% 320,809  $ 468,000  7.1  % 7.0  %
500 North Beacon Street and 4 Kingsbury Avenue/Greater Boston/Cambridge/Inner Suburbs 1/23/24 100% —  100,624  100,624  100% 248,018  427,000  6.2  5.5 
Redevelopment projects
651 Gateway Boulevard/San Francisco Bay Area/South San Francisco 1/16/24 50.0% —  44,652  44,652  100% 326,706  487,000  5.0  5.1 
Alexandria Center® for Advanced Technologies – Monte Villa Parkway/Seattle/Bothell
1/27/24 100% 65,086  115,598  180,684  100% 460,934  229,000  6.3  6.2 
Canada 2/28/24 100% 44,862  —  9,725  54,587  100% 250,790  113,000  6.4  6.3 
Weighted average/total 1/26/24 153,516  343,445  496,961  1,607,257  $ 1,724,000  6.1  % 5.9  %
Refer to “New Class A/A+ development and redevelopment properties: current projects” in the Supplemental Information for details on the square footage in service and under construction, if applicable.

(1)Image represents 500 North Beacon Street on the Arsenal on the Charles mega campus.
(2)Image represents 3755 Monte Villa Parkway.
(3)Represents the average delivery date for deliveries that occurred during the current quarter, weighted by annual rental revenue.
(4)Occupancy relates to total operating RSF placed in service as of the most recent delivery.

New Class A/A+ Development and Redevelopment Properties: Current Projects
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March 31, 2024

99 Coolidge Avenue
500 North Beacon Street and
4 Kingsbury Avenue(1)
311 Arsenal Street 201 Brookline Avenue 401 Park Drive
Greater Boston/
Cambridge/Inner Suburbs
Greater Boston/
Cambridge/Inner Suburbs
Greater Boston/
Cambridge/Inner Suburbs
Greater Boston/Fenway Greater Boston/Fenway
204,395 RSF 147,394 RSF 160,053 RSF 58,149 RSF 133,578 RSF
36% Leased 85% Leased 59% Leased 98% Leased 17% Leased
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421 Park Drive
40, 50, and 60 Sylvan Road(2)
840 Winter Street
1450 Owens Street(3)
651 Gateway Boulevard
Greater Boston/Fenway Greater Boston/Route 128 Greater Boston/Route 128 San Francisco Bay Area/
Mission Bay
San Francisco Bay Area/
South San Francisco
392,011 RSF 576,924 RSF 139,680 RSF 212,796 RSF 282,054 RSF
13% Leased 29% Leased 100% Leased —% Leased/Negotiating 21% Leased
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(1)Image represents 500 North Beacon Street on the Arsenal on the Charles mega campus.
(2)Image represents 60 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, where our joint venture partner will fund 100% of the construction cost until they attain an ownership interest of 75%, after which they will contribute their respective share of additional capital. We are currently marketing the space for lease and have initial interest from publicly traded biotechnology and institutional tenants.


New Class A/A+ Development and Redevelopment Properties: Current Projects (continued)
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March 31, 2024
230 Harriet Tubman Way
10935, 10945, and 10955
Alexandria Way(1)
4135 Campus Point Court 4155 Campus Point Court 10075 Barnes Canyon Road
San Francisco Bay Area/
South San Francisco
San Diego/Torrey Pines San Diego/
University Town Center
San Diego/
University Town Center
San Diego/Sorrento Mesa
285,346 RSF 334,996 RSF 426,927 RSF 171,102 RSF 254,771 RSF
100% Leased 100% Leased 100% Leased 100% Leased 69% Leased/Negotiating
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1150 Eastlake Avenue East
Alexandria Center® for Advanced Technologies – Monte Villa Parkway(2)
9810 and 9820 Darnestown Road(3)
9808 Medical Center Drive 8800 Technology Forest Place
Seattle/Lake Union Seattle/Bothell Maryland/Rockville Maryland/Rockville Texas/Greater Houston
33,349 RSF 34,306 RSF 442,000 RSF 68,601 RSF 73,298 RSF
100% Leased 98% Leased/Negotiating 100% Leased 60% Leased 41% Leased
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(1)Image represents 10955 Alexandria Way.
(2)Image represents 3755 Monte Villa Parkway.
(3)Image represents 9810 Darnestown Road.



New Class A/A+ Development and Redevelopment Properties: Current Projects (continued)
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March 31, 2024
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 4Q24
840 Winter Street/Greater Boston/Route 128 Redev 28,534  139,680  168,214  100  100  4Q24 4Q24
230 Harriet Tubman Way/San Francisco Bay Area/South San Francisco Dev —  285,346  285,346  100  100  4Q24 4Q24
4155 Campus Point Court/San Diego/University Town Center Dev —  171,102  171,102  100  100  4Q24 4Q24
1150 Eastlake Avenue East/Seattle/Lake Union Dev 278,282  33,349  311,631  100  100  4Q23 3Q24
Alexandria Center® for Advanced Technologies – Monte Villa Parkway/Seattle/Bothell
Redev 426,628  34,306  460,934  90  98  1Q23 4Q24
9820 Darnestown Road/Maryland/Rockville Dev —  250,000  250,000  100  100  4Q24 4Q24
9810 Darnestown Road/Maryland/Rockville Dev —  192,000  192,000  100  100  2Q24 2Q24
9808 Medical Center Drive/Maryland/Rockville Dev 26,460  68,601  95,061  60  60  3Q23 4Q24
1,211,871  1,232,533  2,444,404  96  98 
2025 stabilization
99 Coolidge Avenue/Greater Boston/Cambridge/Inner Suburbs Dev 116,414  204,395  320,809  36  36  4Q23 2025
500 North Beacon Street and 4 Kingsbury Avenue/Greater Boston/
Cambridge/Inner Suburbs
Dev 100,624  147,394  248,018  85  85  1Q24 2025
651 Gateway Boulevard/San Francisco Bay Area/South San Francisco Redev 44,652  282,054  326,706  21  21  1Q24 2025
8800 Technology Forest Place/Texas/Greater Houston Redev 50,094  73,298  123,392  41  41  2Q23 2025
Canada Redev 87,579  163,211  250,790  73  73  3Q23 2025
399,363  870,352  1,269,715  49  49 
(2)
1,611,234  2,102,885  3,714,119  80  81 
2026 and beyond stabilization
311 Arsenal Street/Greater Boston/Cambridge/Inner Suburbs Redev 230,609 
(3)
160,053  390,662  59  59  2027 2027
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  —  —  2026 2027
1450 Owens Street/San Francisco Bay Area/Mission Bay Dev —  212,796  212,796  —  — 
(4)
2025 2026
10935, 10945, and 10955 Alexandria Way/San Diego/Torrey Pines Dev —  334,996  334,996  100  100  2025 2026
4135 Campus Point Court/San Diego/University Town Center Dev —  426,927  426,927  100  100  2026 2026
10075 Barnes Canyon Road/San Diego/Sorrento Mesa Dev —  254,771  254,771  19  69  2025 2026
230,609  2,945,925  3,176,534  40  44 
(2)
1,841,843  5,048,810  6,890,653  62  64 
Committed 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 1,841,843  5,541,380  7,383,223  58  % 63  %
(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.
(2)Represents projects focused on demand from our existing tenants in our adjacent properties/campuses and that will also address demand from other non-Alexandria properties/campuses.
(3)We expect to redevelop an additional 173,705 RSF of occupied space into laboratory space upon expiration of the existing leases through 1H25. Refer to “Investments in real estate” under “Definitions and reconciliations” in the Supplemental Information for additional details.
(4)Represents a single- or multi-tenant project expanding our existing mega campus, where our joint venture partner will fund 100% of the construction cost until they attain an ownership interest of 75%, after which they will contribute their respective share of additional capital. We are currently marketing the space for lease and have initial interest from publicly traded biotechnology and institutional tenants.

New Class A/A+ Development and Redevelopment Properties: Current Projects (continued)
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March 31, 2024
(Dollars in thousands)
Our Ownership Interest At 100% Unlevered Yields
Property/Market/Submarket In Service CIP Cost to Complete Total at
Completion
Initial Stabilized Initial Stabilized (Cash Basis)
Under construction
2024 stabilization
201 Brookline Avenue/Greater Boston/Fenway 99.0  % $ 662,979  $ 86,657  $ 25,364  $ 775,000  7.2  % 6.5  %
840 Winter Street/Greater Boston/Route 128 100  % 13,649  170,501  23,850  208,000  7.5  % 6.5  %
230 Harriet Tubman Way/San Francisco Bay Area/South San Francisco 47.4  % —  273,434  236,566  510,000  7.4  % 6.4  %
4155 Campus Point Court/San Diego/University Town Center 55.0  % —  109,061  63,939  173,000  7.4  % 6.5  %
1150 Eastlake Avenue East/Seattle/Lake Union 100  % 371,166  40,332  31,502  443,000  6.6  % 6.7  %
Alexandria Center® for Advanced Technologies – Monte Villa Parkway/Seattle/Bothell
100  % 192,995  10,956  25,049  229,000  6.3  % 6.2  %
9820 Darnestown Road/Maryland/Rockville 100  % —  156,118  20,882  177,000  6.3  % 5.6  %
9810 Darnestown Road/Maryland/Rockville 100  % —  112,603  20,397  133,000  6.9  % 6.2  %
9808 Medical Center Drive/Maryland/Rockville 100  % 35,208  68,984  8,808  113,000  5.5  % 5.5  %
1,275,997  1,028,646 
2025 stabilization
99 Coolidge Avenue/Greater Boston/Cambridge/Inner Suburbs 75.0  % 135,536  173,314  159,150  468,000  7.1  % 7.0  %
500 North Beacon Street and 4 Kingsbury Avenue/Greater Boston/
Cambridge/Inner Suburbs
100  % 159,702  201,424  65,874  427,000  6.2  % 5.5  %
651 Gateway Boulevard/San Francisco Bay Area/South San Francisco 50.0  % 58,391  265,563  163,046  487,000  5.0  % 5.1  %
8800 Technology Forest Place/Texas/Greater Houston 100  % 44,797  58,761  8,442  112,000  6.3  % 6.0  %
Canada 100  % 34,952  52,446  25,602  113,000  6.4  % 6.3  %
433,378  751,508 
2026 and beyond stabilization(1)
311 Arsenal Street/Greater Boston/Cambridge/Inner Suburbs 100  % 163,136  121,406  TBD
401 Park Drive/Greater Boston/Fenway 100  % —  148,439 
421 Park Drive/Greater Boston/Fenway 99.7  % —  327,424 
40, 50, and 60 Sylvan Road/Greater Boston/Route 128 100  % —  411,537 
Other/Greater Boston 100  % —  139,663 
1450 Owens Street/San Francisco Bay Area/Mission Bay 27.2  % —  220,899 
10935, 10945, and 10955 Alexandria Way/San Diego/Torrey Pines 100  % —  230,484  272,516  503,000  6.2  % 5.8  %
4135 Campus Point Court/San Diego/University Town Center 55.0  % —  184,659  TBD
10075 Barnes Canyon Road/San Diego/Sorrento Mesa 50.0  % —  148,818 
163,136  1,933,329 
1,872,511  3,713,483 
Committed near-term project expected to commence construction in the next two years
4165 Campus Point Court/San Diego/University Town Center 55.0  % —  50,734  TBD
Total $ 1,872,511  $ 3,764,217  $ 4,090,000 
(2)
$ 9,730,000 
(2)
Our share of investment(2)(3)
$ 1,800,000  $ 3,060,000  $ 3,230,000  $ 8,090,000 

Refer to “Initial stabilized yield (unlevered)” under “Definitions and reconciliations” in the Supplemental Information for additional details.

(1)We expect to provide total estimated costs and related yields for each project with estimated stabilization in 2026 and beyond over the next several quarters.
(2)Represents dollar amount rounded to the nearest $10 million and includes preliminary estimated amounts for projects listed as TBD.
(3)Represents our share of investment based on our ownership percentage upon completion of development or redevelopment projects.

New Class A/A+ Development and Redevelopment Properties: Summary of Pipeline
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March 31, 2024
(Dollars in thousands)


69% of Our Total Value-Creation Pipeline RSF Is Within Our Mega Campuses
Market
Property/Submarket
Our Ownership Interest Book Value Square Footage
Development and Redevelopment
Active and Near-Term Construction Future Opportunities Subject to
Market Conditions and Leasing
Under Construction Committed Near Term Priority Anticipated Future
Total(1)
Greater Boston
Mega Campus: The Arsenal on the Charles/Cambridge/Inner Suburbs 100  % $ 334,152  307,447  —  173,705  34,157  515,309 
 311 Arsenal Street, 500 North Beacon Street, and 4 Kingsbury Avenue
99 Coolidge Avenue/Cambridge/Inner Suburbs 75.0  % 173,314  204,395  —  —  —  204,395 
Mega Campus: Alexandria Center® for Life Science – Fenway/Fenway
(2)
562,520  583,738  —  —  —  583,738 
201 Brookline Avenue and 401 and 421 Park Drive
Mega Campus: Alexandria Center® for Life Science – Waltham/Route 128
100  % 643,372  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  % 119,609  —  —  —  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  % 84,444  —  —  —  902,000  902,000 
446, 458, 500, and 550 Arsenal Street
Mega Campus: 285, 299, 307, and 345 Dorchester Avenue/Seaport Innovation District 60.0  % 280,390  —  —  —  1,040,000  1,040,000 
10 Necco Street/Seaport Innovation District 100  % 104,649  —  —  —  175,000  175,000 
Mega Campus: One Moderna Way/Route 128 100  % 26,469  —  —  —  1,100,000  1,100,000 
215 Presidential Way/Route 128 100  % 6,816  —  —  —  112,000  112,000 
Other value-creation projects
(3)
290,775  453,869  —  —  1,323,541  1,777,410 
$ 2,634,391  2,266,053  —  173,705  5,518,153  7,957,911 



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

(1)Represents total square footage upon completion of development or redevelopment of one or more new Class A/A+ properties. Square footage presented includes the RSF of buildings currently in operation at properties that also have 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” under “Definitions and reconciliations” in the Supplemental Information for additional details, including value-creation square feet currently included in rental properties.
(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 99.7% interest in 421 Park Drive aggregating 392,011 RSF.
(3)Includes a property in which we own a partial interest through a real estate joint venture. Refer to “Joint venture financial information” in the Supplemental Information for additional details.

New Class A/A+ Development and Redevelopment Properties: Summary of Pipeline (continued)
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March 31, 2024
(Dollars in thousands)

Market
Property/Submarket
Our Ownership Interest Book Value Square Footage
Development and Redevelopment
Active and Near-Term Construction Future Opportunities Subject to
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
27.2  % $ 220,899  212,796  —  —  —  212,796 
1450 Owens Street
Alexandria Center® for Life Science – Millbrae/South San Francisco
47.4  % 427,652  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 Technology Center® – Gateway/
South San Francisco
50.0  % 292,111  282,054  —  —  291,000  573,054 
651 Gateway Boulevard
Mega Campus: Alexandria Center® for Advanced Technologies – Tanforan/South San Francisco
100  % 383,068  —  —  150,000  1,780,000  1,930,000 
1122, 1150, and 1178 El Camino Real
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  % 429,330  —  —  105,000  1,392,830  1,497,830 
960 Industrial Road, 987 and 1075 Commercial Street, and 888 Bransten Road
3825 and 3875 Fabian Way/Greater Stanford 100  % 149,526  —  —  —  478,000  478,000 
2100, 2200, 2300, and 2400 Geng Road/Greater Stanford 100  % —  —  —  —  240,000  240,000 
901 California Avenue/Greater Stanford 100  % 17,563  —  —  —  56,924  56,924 
Mega Campus: 88 Bluxome Street/SoMa 100  % 383,393  —  —  —  1,070,925  1,070,925 
Other value-creation projects 100  % —  —  —  —  25,000  25,000 
$ 2,310,197  780,196  —  560,438  5,574,892  6,915,526 



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

(1)Represents total square footage upon completion of development or redevelopment of one or more new Class A/A+ properties. Square footage presented includes the RSF of buildings currently in operation at properties that also have 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” under “Definitions and reconciliations” in the Supplemental Information for additional details, including value-creation square feet currently included in rental properties.
(2)Includes a property in which we own a partial interest through a real estate joint venture. Refer to “Joint venture financial information” in the Supplemental Information for additional details.

New Class A/A+ Development and Redevelopment Properties: Summary of Pipeline (continued)
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March 31, 2024
(Dollars in thousands)

Market
Property/Submarket
Our Ownership Interest Book Value Square Footage
Development and Redevelopment
Active and Near-Term Construction Future Opportunities Subject to
Market Conditions and Leasing
Under Construction Committed Near Term Priority Anticipated Future
Total(1)
San Diego
Mega Campus: One Alexandria Square/Torrey Pines 100  % $ 286,291  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  % 495,923  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  % 264,936  254,771  —  250,000  243,845  748,616 
9805 Scranton Road and 10065 and 10075 Barnes Canyon Road
11255 and 11355 North Torrey Pines Road/Torrey Pines 100  % 145,328  —  —  153,000  62,000  215,000 
ARE Towne Centre/University Town Center 100  % 27,153  —  —  230,000  —  230,000 
9363, 9373, and 9393 Towne Centre Drive
Costa Verde by Alexandria/University Town Center 100  % 133,383  —  —  —  537,000  537,000 
8410-8750 Genesee Avenue and 4282 Esplanade Court
Mega Campus: 5200 Illumina Way/University Town Center 51.0  % 17,456  —  —  —  451,832  451,832 
9625 Towne Centre Drive/University Town Center 30.0  % 837  —  —  —  100,000  100,000 
Mega Campus: Sequence District by Alexandria/Sorrento Mesa 100  % 46,300  —  —  —  1,798,915  1,798,915 
6260, 6290, 6310, 6340, 6350, and 6450 Sequence Drive
Scripps Science Park by Alexandria/Sorrento Mesa 100  % 116,869  —  —  —  598,349  598,349 
10048, 10219, 10256, and 10260 Meanley Drive and 10277 Scripps Ranch Boulevard
Pacific Technology Park/Sorrento Mesa 50.0  % 23,807  —  —  —  149,000  149,000 
9444 Waples Street
4025, 4031, 4045, and 4075 Sorrento Valley Boulevard/Sorrento Valley 100  % 41,194  —  —  —  247,000  247,000 
Other value-creation projects 100  % 73,515  —  —  —  475,000  475,000 
$ 1,672,992  1,187,796  492,570  633,000  5,438,221  7,751,587 


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

(1)Represents total square footage upon completion of development or redevelopment of one or more new Class A/A+ properties. Square footage presented includes the RSF of buildings currently in operation at properties that also have 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” under “Definitions and reconciliations” in the Supplemental Information for additional details, including value-creation square feet currently included in rental properties.
(2)We have a 100% interest in this property.

New Class A/A+ Development and Redevelopment Properties: Summary of Pipeline (continued)
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March 31, 2024
(Dollars in thousands)

Market
Property/Submarket
Our Ownership Interest Book Value Square Footage
Development and Redevelopment
Active and Near-Term Construction Future Opportunities Subject to
Market Conditions and Leasing
Under Construction Committed Near Term Priority Anticipated Future
Total(1)
Seattle
Mega Campus: Alexandria Center® for Life Science – Eastlake/Lake Union
100  % $ 40,332  33,349  —  —  —  33,349 
1150 Eastlake Avenue East
Alexandria Center® for Advanced Technologies – Monte Villa Parkway/Bothell
100  % 10,956  34,306  —  50,552  —  84,858 
3301 Monte Villa Parkway
Mega Campus: Alexandria Center® for Life Science – South Lake Union/Lake Union
(2)
443,273  —  —  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  % 57,849  —  —  —  597,313  597,313 
Mega Campus: Alexandria Center® for Advanced Technologies – Canyon Park/Bothell
100  % 16,270  —  —  —  230,000  230,000 
21660 20th Avenue Southeast
Other value-creation projects 100  % 138,062  —  —  —  706,087  706,087 
706,742  67,655  —  1,146,138  1,721,800  2,935,593 
Maryland
Mega Campus: Alexandria Center® for Life Science – Shady Grove/Rockville
100  % 358,634  510,601  —  —  296,000  806,601 
9808 Medical Center Drive and 9810, 9820, and 9830 Darnestown Road
358,634  510,601  —  —  296,000  806,601 
Research Triangle
Mega Campus: Alexandria Center® for Advanced Technologies – Research Triangle/Research Triangle
100  % 98,895  —  —  180,000  990,000  1,170,000 
4 and 12 Davis Drive
Mega Campus: Alexandria Center® for NextGen Medicines/
Research Triangle
100  % 105,675  —  —  100,000  955,000  1,055,000 
3029 East Cornwallis Road
Mega Campus: Alexandria Center® for Life Science – Durham/Research Triangle
100  % $ 173,877  —  —  —  2,210,000  2,210,000 
41 Moore Drive

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

(1)Represents total square footage upon completion of development or redevelopment of one or more new Class A/A+ properties. Square footage presented includes the RSF of buildings currently in operation at properties that also have 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” under “Definitions and reconciliations” in the Supplemental Information for additional details, including value-creation square feet currently included in rental properties.
(2)We have a 100% interest in 601 and 701 Dexter Avenue North aggregating 414,986 RSF and a 60% interest in the priority anticipated development project at 800 Mercer Street aggregating 869,000 RSF.

New Class A/A+ Development and Redevelopment Properties: Summary of Pipeline (continued)
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March 31, 2024
(Dollars in thousands)

Market
Property/Submarket
Our Ownership Interest Book Value Square Footage
Development and Redevelopment
Active and Near-Term Construction Future Opportunities Subject to
Market Conditions and Leasing
Under Construction Committed Near Term Priority Anticipated Future
Total(1)
Research Triangle (continued)
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 
435,233  —  —  280,000  5,047,227  5,327,227 
New York City
Mega Campus: Alexandria Center® for Life Science – New York City/New York City
100  % 158,579  —  —  —  550,000 
(2)
550,000 
158,579  —  —  —  550,000  550,000 
Texas
Alexandria Center® for Advanced Technologies at The Woodlands/Greater Houston
100  % 78,484  73,298  —  —  116,405  189,703 
8800 Technology Forest Place
1001 Trinity Street and 1020 Red River Street/Austin 100  % 9,569  —  —  126,034  123,976  250,010 
Other value-creation projects 100  % 134,557  —  —  —  1,694,000  1,694,000 
222,610  73,298  —  126,034  1,934,381  2,133,713 
Canada 100  % 52,446  163,211  —  —  371,743  534,954 
Other value-creation projects 100  % 116,856  —  —  —  724,349  724,349 
Total pipeline as of March 31, 2024
$ 8,668,680 
(3)
5,048,810  492,570  2,919,315  27,176,766  35,637,461 

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

(1)Total square footage includes 3,725,969 RSF of buildings currently in operation where we expect to demolish or redevelop and commence future construction. Refer to “Investments in real estate” under “Definitions and reconciliations” in the Supplemental Information for additional details, including value-creation square feet currently included in rental properties.
(2)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.
(3)Includes $3.7 billion of projects that are currently under construction and are 64% leased/negotiating. We also expect to commence construction on one committed near-term project aggregating $50.7 million, which is 51% leased/negotiating, in the next two years after March 31, 2024.

Construction Spending and Capitalization of Interest
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March 31, 2024
(Dollars in thousands)
Construction spending Three Months Ended March 31, 2024 Projected Midpoint for
the Year Ending
December 31, 2024
Construction of Class A/A+ properties:
Active construction projects
Under construction and committed near-term projects(1) and projects expected to commence active construction in 2024(2)
$ 487,891  $ 1,778,000 
Future pipeline pre-construction
Primarily mega campus expansion pre-construction work (entitlement, design, and site work) 131,456  652,000 
Revenue- and non-revenue-enhancing capital expenditures 37,068  250,000 
Construction spend (before contributions from noncontrolling interests) 656,415  2,680,000 
Contributions from noncontrolling interests (consolidated real estate joint ventures) (92,863) (430,000)
(3)
Total construction spending $ 563,552  $ 2,250,000 
2024 guidance range $1,950,000 – $2,550,000

Projected capital contributions from partners in consolidated real estate joint ventures to fund construction
Projected Timing
Amount(4)
2Q24 through 4Q24
$ 337,137 
2025 through 2027
913,146 
Total $ 1,250,283 

Capitalization of interest
Key Categories of Interest Capitalized During 1Q24
Average Real Estate Basis Capitalized During 1Q24
Percentage of
Total Capitalized Interest
RSF Upon Completion of Construction
Construction of Class A/A+ properties:
78%
Potential Growth in Operating RSF
Active construction projects
Under construction and committed near-term projects(1)
$ 2,779,559  34  % 5,541,380 
Future pipeline pre-construction
Priority anticipated projects 623,098 
(5)
2,919,315 
Primarily mega campus expansion pre-construction work (entitlement, design, and site work) 3,578,177 
(5)
44  27,176,766 
Smaller redevelopments and repositioning capital projects 1,182,455  14  N/A
$ 8,163,289  100  % 35,637,461 
Refer to “Definitions and reconciliations” in the Supplemental Information for additional details.

(1)Includes projects under construction aggregating 5.0 million RSF and one committed near-term project aggregating 492,570 RSF expected to commence construction during the next two years after March 31, 2024, which are 63% leased/negotiating and expected to generate $480 million in annual incremental net operating income primarily commencing from 2Q24 through 4Q27.
(2)Includes three priority anticipated development and redevelopment projects expected to commence active construction in 2024, subject to market conditions and leasing. Refer to “Investments in real estate” under “Definitions and reconciliations” in the Supplemental Information for additional details, including value-creation square feet currently included in rental properties.
(3)Represents contractual capital commitments expected from existing consolidated real estate joint ventures to fund construction.
(4)Represents reduction to our consolidated construction spending.
(5)Average real estate basis capitalized related to our future pipeline pre-construction includes 32% from four key active and future value-creation projects on mega campuses. See next page for additional details.

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Construction Spending and Capitalization of Interest (continued)
March 31, 2024
Key Active and Future Value-Creation Projects on Mega Campuses
Alexandria Center® for Advanced Technologies – Tanforan
Alexandria Center® for Life Science – San Carlos
San Francisco Bay Area/South San Francisco San Francisco Bay Area/Greater Stanford
1.9 million future SF
1.5 million future SF
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Campus Point by Alexandria
Alexandria Center® for Life Science – South Lake Union
San Diego/University Town Center Seattle/Lake Union
1.7 million active and future SF
1.3 million future SF
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Refer to “Mega campus” under “Definitions and reconciliations” in the Supplemental Information for additional details.

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Joint Venture Financial Information
March 31, 2024
Consolidated Real Estate Joint Ventures
Property Market Submarket
Noncontrolling
Interest Share(1)
Operating RSF
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% 388,269
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% 116,414
(2)
15 Necco Street Greater Boston Seaport Innovation District 43.3% 345,996
285, 299, 307, and 345 Dorchester Avenue Greater Boston Seaport Innovation District 40.0%
(2)
Alexandria Center® for Science and Technology – Mission Bay(3)
San Francisco Bay Area Mission Bay 75.0% 999,979
1450 Owens Street San Francisco Bay Area Mission Bay 72.8%
(4)
(2)
601, 611, 651(2), 681, 685, and 701 Gateway Boulevard
San Francisco Bay Area South San Francisco 50.0% 831,318
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 52.6%
(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% 884,266
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
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

Refer to “Joint venture financial information” under “Definitions and reconciliations” in the Supplemental Information for additional details.

(1)In addition to the consolidated real estate joint ventures listed, various joint venture partners hold insignificant noncontrolling interests in four 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” in the Supplemental Information 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 equity to fund the construction of 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.


Joint Venture Financial Information (continued)
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March 31, 2024
(In thousands)


As of March 31, 2024
Noncontrolling Interest
Share of Consolidated
Real Estate JVs
Our Share of
Unconsolidated Real
Estate JVs
Investments in real estate $ 4,098,889  $ 124,102 
Cash, cash equivalents, and restricted cash 117,844  6,397 
Other assets 427,374  12,491 
Secured notes payable (32,358) (94,920)
Other liabilities (268,426) (7,434)
Redeemable noncontrolling interests (16,620) — 
$ 4,326,703  $ 40,636 


Three Months Ended March 31, 2024
Noncontrolling Interest
Share of Consolidated
Real Estate JVs
Our Share of
Unconsolidated Real
Estate JVs
Total revenues $ 111,097  $ 3,175 
Rental operations (30,869) (1,024)
80,228  2,151 
General and administrative (678) (40)
Interest (216) (922)
Depreciation and amortization of real estate assets (30,904) (1,034)
Fixed returns allocated to redeemable noncontrolling interests(1)
201  — 
$ 48,631  $ 155 
Straight-line rent and below-market lease revenue $ 9,309  $ 282 
Funds from operations(2)
$ 79,535  $ 1,189 

Refer to “Joint venture financial information” under “Definitions and reconciliations” in the Supplemental Information for additional details.

(1)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.
(2)Refer to “Funds from operations and funds from operations per share” in the Earnings Press Release and “Definitions and reconciliations” in the Supplemental Information for additional details.




Investments
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March 31, 2024
(Dollars in thousands)

We hold investments in publicly traded companies and privately held entities primarily involved in the life science industry. The tables below summarize components of our investment income (loss) and non-real estate investments (in thousands). For additional details, refer to “Investments” under “Definitions and reconciliations” in the Supplemental Information.
Three Months Ended March 31, 2024 Year Ended December 31, 2023
Realized gains $ 14,126 
(1)
$ 6,078 
(2)
Unrealized gains (losses) 29,158 
(3)
(201,475)
(4)
Investment income (loss) $ 43,284  $ (195,397)
    
March 31, 2024 December 31, 2023
Investments Cost Unrealized Gains Unrealized Losses Carrying Amount Carrying Amount
Publicly traded companies $ 187,775  $ 57,761  $ (71,015) $ 174,521  $ 159,566 
Entities that report NAV 511,039  189,044  (27,954) 672,129  671,532 
Entities that do not report NAV:
Entities with observable price changes 94,283  73,629  (1,224) 166,688  174,268 
Entities without observable price changes 382,408  —  —  382,408  368,654 
Investments accounted for under the equity method   N/A N/A N/A 115,842  75,498 
March 31, 2024 $ 1,175,505 
(5)
$ 320,434  $ (100,193) $ 1,511,588  $ 1,449,518 
December 31, 2023 $ 1,177,072  $ 320,445  $ (123,497) $ 1,449,518 
Public/Private Mix (Cost) Tenant/Non-Tenant Mix (Cost)
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(1)Consists of realized gains of $28.8 million, partially offset by impairment charges of $14.7 million during the three months ended March 31, 2024.
(2)Consists of realized gains of $80.6 million, offset by impairment charges of $74.6 million during the year ended December 31, 2023.
(3)Consists of unrealized gains of $57.1 million primarily resulting from the increase in valuation in publicly traded entities and $27.9 million resulting from accounting reclassifications of unrealized gains recognized in prior periods into realized gains upon our realization of investments during the three months ended March 31, 2024.
(4)Consists of 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 and $89.9 million resulting from accounting reclassifications of unrealized gains recognized in prior periods into realized gains upon our sales of investments during the year ended December 31, 2023.
(5)Represents 2.7% of gross assets as of March 31, 2024. Refer to “Gross assets” under “Definitions and reconciliations” in the Supplemental Information for additional details.

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Key Credit Metrics
March 31, 2024

Liquidity Minimal Outstanding Borrowings and Significant Availability on Unsecured Senior Line of Credit
(in millions)
$6.0B
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(in millions)
Availability under our unsecured senior line of credit, net of amounts outstanding under our commercial paper program $ 5,000 
Cash, cash equivalents, and restricted cash 732 
Availability under our secured construction loan 65 
Investments in publicly traded companies 175 
Liquidity as of March 31, 2024
$ 5,972 
Net Debt and Preferred Stock to Adjusted EBITDA(1)
Fixed-Charge Coverage Ratio(1)
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Refer to “Definitions and reconciliations” in the Supplemental Information for additional details.
(1)Quarter annualized.

Summary of Debt
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March 31, 2024
(In millions)





Weighted-Average Remaining Term of 13.4 Years
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Summary of Debt (continued)
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March 31, 2024
(Dollars in thousands)

Fixed-rate and variable-rate debt Fixed-Rate
Debt
Variable-Rate Debt Total Percentage Weighted-Average
Interest Rate(1)
Remaining Term
(in years)
Secured notes payable $ 619  $ 129,431  $ 130,050  1.1  % 8.36  % 2.7
Unsecured senior notes payable 12,087,113  —  12,087,113  98.9  3.81  13.5
Unsecured senior line of credit(2) and commercial paper program(3)
—  —  —  —  —  3.8
(4)
Total/weighted average $ 12,087,732  $ 129,431  $ 12,217,163  100.0  % 3.86  % 13.4
(4)
Percentage of total debt 98.9  % 1.1  % 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)Based on certain sustainability metrics achieved in accordance with the terms of our unsecured senior line of credit agreement, the borrowing rate was reduced for a one-year period by two basis points to SOFR plus 0.855%, from SOFR plus 0.875%. As of March 31, 2024, 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+0.855%. As of March 31, 2024, we had no 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 13.4 years. The commercial paper notes sold during the three months ended March 31, 2024 were issued at a weighted-average yield to maturity of 5.60% and had a weighted-average maturity term of 15 days.


Average debt outstanding and weighted-average interest rate Three Months Ended March 31, 2024
Average Debt Outstanding Weighted-Average Interest Rate
Long-term fixed-rate debt $ 11,683,004  3.71  %
Short-term variable-rate unsecured senior line of credit and commercial paper program debt
531,445  5.76 
Blended average interest rate 12,214,449  3.80 
Loan fee amortization and annual facility fee related to unsecured senior line of credit N/A 0.12 
Total/weighted average $ 12,214,449  3.92  %



Summary of Debt (continued)
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March 31, 2024
(Dollars in thousands)


Debt covenants Unsecured Senior Notes Payable Unsecured Senior Line of Credit
Debt Covenant Ratios(1)
Requirement March 31, 2024 Requirement March 31, 2024
Total Debt to Total Assets ≤ 60% 29% ≤ 60.0% 28.5%
Secured Debt to Total Assets ≤ 40% 0.3% ≤ 45.0% 0.2%
Consolidated EBITDA to Interest Expense ≥ 1.5x 14.1x ≥ 1.50x 4.06x
Unencumbered Total Asset Value to Unsecured Debt ≥ 150% 330% N/A N/A
Unsecured Interest Coverage Ratio N/A N/A ≥ 1.75x 20.57x
(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  $ 28,374  65.0%
1655 and 1725 Third Street
3/10/25 4.50% 4.57% 600,000  599,612  10.0%
101 West Dickman Street 11/10/26 SOFR+1.95%
(3)
7.37% 26,750  17,749  57.9%
1450 Research Boulevard 12/10/26 SOFR+1.95%
(3)
7.43% 13,000  8,509  73.2%
$ 668,250  $ 654,244 
(1)Includes interest expense and amortization of loan fees.
(2)Represents outstanding principal, net of unamortized deferred financing costs, as of March 31, 2024.
(3)This loan is subject to a fixed SOFR floor of 0.75%.

Summary of Debt (continued)
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March 31, 2024
(Dollars in thousands)

Debt Stated 
Rate
Interest
Rate(1)
Maturity
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  % 8.37  % 11/19/26 $ —  $ —  $ 129,890  $ —  $ —  $ —  $ 129,890  $ (459) $ 129,431 
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
8.36  32  34  129,926  38  41  438  130,509  (459) 130,050 
Unsecured senior line of credit and commercial paper program(4)
(4)
— 
(4)
1/22/28
(4)
—  —  —  —  —  —  —  —  — 
Unsecured senior notes payable
3.45  % 3.62  4/30/25 —  600,000  —  —  —  —  600,000  (960) 599,040 
Unsecured senior notes payable
4.30  % 4.50  1/15/26 —  —  300,000  —  —  —  300,000  (900) 299,100 
Unsecured senior notes payable
3.80  % 3.96  4/15/26 —  —  350,000  —  —  —  350,000  (1,021) 348,979 
Unsecured senior notes payable
3.95  % 4.13  1/15/27 —  —  —  350,000  —  —  350,000  (1,448) 348,552 
Unsecured senior notes payable
3.95  % 4.07  1/15/28 —  —  —  —  425,000  —  425,000  (1,628) 423,372 
Unsecured senior notes payable
4.50  % 4.60  7/30/29 —  —  —  —  —  300,000  300,000  (1,193) 298,807 
Unsecured senior notes payable
2.75  % 2.87  12/15/29 —  —  —  —  —  400,000  400,000  (2,371) 397,629 
Unsecured senior notes payable
4.70  % 4.81  7/1/30 —  —  —  —  —  450,000  450,000  (2,333) 447,667 
Unsecured senior notes payable
4.90  % 5.05  12/15/30 —  —  —  —  —  700,000  700,000  (5,316) 694,684 
Unsecured senior notes payable
3.375  % 3.48  8/15/31 —  —  —  —  —  750,000  750,000  (4,830) 745,170 
Unsecured senior notes payable
2.00  % 2.12  5/18/32 —  —  —  —  —  900,000  900,000  (7,657) 892,343 
Unsecured senior notes payable
1.875  % 1.97  2/1/33 —  —  —  —  —  1,000,000  1,000,000  (7,760) 992,240 
Unsecured senior notes payable
2.95  % 3.07  3/15/34 —  —  —  —  —  800,000  800,000  (7,801) 792,199 
Unsecured senior notes payable
4.75  % 4.88  4/15/35 —  —  —  —  —  500,000  500,000  (5,298) 494,702 
Unsecured senior notes payable
5.25  % 5.38  5/15/36 —  —  —  —  —  400,000  400,000  (4,364) 395,636 
Unsecured senior notes payable
4.85  % 4.93  4/15/49 —  —  —  —  —  300,000  300,000  (2,958) 297,042 
Unsecured senior notes payable
4.00  % 3.91  2/1/50 —  —  —  —  —  700,000  700,000  10,080  710,080 
Unsecured senior notes payable
3.00  % 3.08  5/18/51 —  —  —  —  —  850,000  850,000  (11,513) 838,487 
Unsecured senior notes payable
3.55  % 3.63  3/15/52 —  —  —  —  —  1,000,000  1,000,000  (14,002) 985,998 
Unsecured senior notes payable
5.15  % 5.26  4/15/53 —  —  —  —  —  500,000  500,000  (7,757) 492,243 
Unsecured senior notes payable
5.625  % 5.71  5/15/54 —  —  —  —  —  600,000  600,000  (6,857) 593,143 
Unsecured debt weighted-average interest rate/subtotal 3.81  —  600,000  650,000  350,000  425,000  10,150,000  12,175,000  (87,887) 12,087,113 
Weighted-average interest rate/total
3.86  % $ 32  $ 600,034  $ 779,926  $ 350,038  $ 425,041  $ 10,150,438  $ 12,305,509  $ (88,346) $ 12,217,163 
Balloon payments
$ —  $ 600,000  $ 779,890  $ 350,000  $ 425,000  $ 10,150,068  $ 12,304,958  $ —  $ 12,304,958 
Principal amortization
32  34  36  38  41  370  551  (88,346) (87,795)
Total debt $ 32  $ 600,034  $ 779,926  $ 350,038  $ 425,041  $ 10,150,438  $ 12,305,509  $ (88,346) $ 12,217,163 
Fixed-rate debt $ 32  $ 600,034  $ 650,036  $ 350,038  $ 425,041  $ 10,150,438  $ 12,175,619  $ (87,887) $ 12,087,732 
Variable-rate debt —  —  129,890  —  —  —  129,890  (459) 129,431 
Total debt
$ 32  $ 600,034  $ 779,926  $ 350,038  $ 425,041  $ 10,150,438  $ 12,305,509  $ (88,346) $ 12,217,163 
Weighted-average stated rate on maturing debt
N/A 3.45% 3.81% 3.95% 3.95% 3.68%

(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 for 99 Coolidge Avenue, of which we own a 75.0% interest. As of March 31, 2024, this joint venture has $65.4 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 “Fixed-rate and variable-rate debt” in “Summary of Debt” for additional details.

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Definitions and Reconciliations
March 31, 2024


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)
3/31/24 12/31/23 9/30/23 6/30/23 3/31/23
Net income (loss) $ 219,176  $ (42,658) $ 68,254  $ 133,705  $ 121,693 
Interest expense
40,840  31,967  11,411  17,072  13,754 
Income taxes
1,764  1,322  1,183  2,251  1,131 
Depreciation and amortization 287,554  285,246  269,370  273,555  265,302 
Stock compensation expense 17,125  34,592  16,288  15,492  16,486 
Gain on sales of real estate (392) (62,227) —  (214,810) — 
Unrealized (gains) losses on non-real estate investments (29,158) (19,479) 77,202  77,897  65,855 
Impairment of real estate
—  271,890  20,649  168,575  — 
Impairment of non-real estate investments 14,698  23,094  28,503  22,953  — 
Adjusted EBITDA
$ 551,607  $ 523,747  $ 492,860  $ 496,690  $ 484,221 
Total revenues $ 769,108  $ 757,216  $ 713,788  $ 713,900  $ 700,795 
Adjusted EBITDA margin
72% 69% 69% 70% 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.



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Definitions and Reconciliations (continued)
March 31, 2024
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 March 31, 2024, 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, redevelop, or reposition 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, redevelop, or reposition 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.
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 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 space. We generally will not commence new development projects for aboveground construction of new Class A/A+ laboratory 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.


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Definitions and Reconciliations (continued)
March 31, 2024
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) 3/31/24 12/31/23 9/30/23 6/30/23 3/31/23
Adjusted EBITDA $ 551,607  $ 523,747  $ 492,860  $ 496,690  $ 484,221 
Interest expense
$ 40,840  $ 31,967  $ 11,411  $ 17,072  $ 13,754 
Capitalized interest 81,840  89,115  96,119  91,674  87,070 
Amortization of loan fees (4,142) (4,059) (4,059) (3,729) (3,639)
Amortization of debt discounts (318) (309) (306) (304) (288)
Cash interest and fixed charges $ 118,220  $ 116,714  $ 103,165  $ 104,713  $ 96,897 
Fixed-charge coverage ratio:
– quarter annualized 4.7x 4.5x 4.8x 4.7x 5.0x
– trailing 12 months 4.7x 4.7x 4.9x 4.9x 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.



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Definitions and Reconciliations (continued)
March 31, 2024
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:
Three Months Ended March 31, 2024
(In thousands) Noncontrolling Interest Share of Consolidated Real Estate JVs Our Share of Unconsolidated
Real Estate JVs
Net income $ 48,631  $ 155 
Depreciation and amortization of real estate assets 30,904  1,034 
Funds from operations $ 79,535  $ 1,189 

Gross assets

Gross assets are calculated as total assets plus accumulated depreciation:
(In thousands) 3/31/24 12/31/23 9/30/23 6/30/23 3/31/23
Total assets $ 37,699,046  $ 36,771,402  $ 36,783,293  $ 36,659,257  $ 36,912,465 
Accumulated depreciation 5,216,857  4,985,019  4,856,436  4,646,833  4,561,854 
Gross assets $ 42,915,903  $ 41,756,421  $ 41,639,729  $ 41,306,090  $ 41,474,319 
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 March 31, 2024, 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 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.


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Definitions and Reconciliations (continued)
March 31, 2024
Investments in real estate

The following table reconciles our investments in real estate as of March 31, 2024:
(In thousands) Investments in
Real Estate
Gross investments in real estate $ 37,539,995 
Less: accumulated depreciation (5,216,857)
Investments in real estate $ 32,323,138 

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 March 31, 2024:
Percentage of Gross Assets
Under construction projects and one committed near-term project expected to commence construction in the next two years (63% 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 1.0% of annual rental revenue as of March 31, 2024 and are included in our industry mix chart as targeted for a future change in use to laboratory space. Refer to “High-quality and diverse client base” in this Supplemental Information.

Space Intentionally Blank
The square footage presented in the table below is classified as operating as of March 31, 2024. 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/
Redev
RSF of Lease Expirations Targeted for
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 148,393  25,312  —  173,705 
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 
255,643  201,898  —  457,541 
Future projects:
100 Edwin H. Land Boulevard/Cambridge Dev 104,500  —  —  104,500 
446, 458, 500, and 550 Arsenal Street/Cambridge/Inner Suburbs Dev —  —  376,698  376,698 
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 —  —  686,290  686,290 
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  2,426,886  3,108,544 
1,024,247  274,836  2,426,886  3,725,969 
(1)Includes vacant square footage as of March 31, 2024.



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Definitions and Reconciliations (continued)
March 31, 2024
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 March 31, 2024 (dollars in thousands):

Annual Rental Revenue Value-Creation Pipeline RSF
Mega campus $ 1,637,733  21,958,936 
Non-mega campus 575,237  9,952,556 
Total $ 2,212,970  31,911,492 
Mega campus as a percentage of annual rental revenue and of total value-creation pipeline RSF 74  % 69  %

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.


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Definitions and Reconciliations (continued)
March 31, 2024
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) 3/31/24 12/31/23 9/30/23 6/30/23 3/31/23
Secured notes payable $ 130,050  $ 119,662  $ 109,110  $ 91,939  $ 73,645 
Unsecured senior notes payable 12,087,113  11,096,028  11,093,725  11,091,424  11,089,124 
Unsecured senior line of credit and commercial paper —  99,952  —  —  374,536 
Unamortized deferred financing costs 84,198  76,329  78,496  80,663  82,831 
Cash and cash equivalents (722,176) (618,190) (532,390) (924,370) (1,263,452)
Restricted cash (9,519) (42,581) (35,321) (35,920) (34,932)
Preferred stock —  —  —  —  — 
Net debt and preferred stock $ 11,569,666  $ 10,731,200  $ 10,713,620  $ 10,303,736  $ 10,321,752 
Adjusted EBITDA:
– quarter annualized $ 2,206,428  $ 2,094,988  $ 1,971,440  $ 1,986,760  $ 1,936,884 
– trailing 12 months $ 2,064,904  $ 1,997,518  $ 1,935,505  $ 1,895,336  $ 1,848,018 
Net debt and preferred stock to Adjusted EBITDA:
– quarter annualized 5.2  x 5.1  x 5.4  x 5.2  x 5.3  x
– trailing 12 months 5.6  x 5.4  x 5.5  x 5.4  x 5.6  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
(Dollars in thousands) 3/31/24 3/31/23
Net income $ 219,176  $ 121,693 
Equity in earnings of unconsolidated real estate joint ventures (155) (194)
General and administrative expenses
47,055  48,196 
Interest expense 40,840  13,754 
Depreciation and amortization
287,554  265,302 
Gain on sales of real estate (392) — 
Investment (income) loss (43,284) 45,111 
Net operating income 550,794  493,862 
Straight-line rent revenue
(48,251) (33,191)
Amortization of acquired below-market leases
(30,340) (21,636)
Net operating income (cash basis) $ 472,203  $ 439,035 
Net operating income (cash basis) – annualized
$ 1,888,812  $ 1,756,140 
Net operating income (from above) $ 550,794  $ 493,862 
Total revenues $ 769,108  $ 700,795 
Operating margin 72% 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.


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Definitions and Reconciliations (continued)
March 31, 2024
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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Definitions and Reconciliations (continued)
March 31, 2024
Same property comparisons (continued)
The following table reconciles the number of same properties to total properties for the three months ended March 31, 2024:
Redevelopment – placed into
Development – under construction Properties
service after January 1, 2023
Properties
201 Brookline Avenue 20400 Century Boulevard
1150 Eastlake Avenue East 140 First Street
9810 and 9820 Darnestown Road 2400 Ellis Road, 40 Moore Drive, and 14 TW Alexander Drive 3
99 Coolidge Avenue
500 North Beacon Street and 4 Kingsbury Avenue 9601 and 9603 Medical Center Drive
9808 Medical Center Drive
Acquisitions after January 1, 2023
Properties
1450 Owens Street Other
230 Harriet Tubman Way
4155 Campus Point Court Unconsolidated real estate JVs
10935, 10945, and 10955 Alexandria Way Properties held for sale
Total properties excluded from same properties 63 
10075 Barnes Canyon Road
421 Park Drive Same properties 347 
4135 Campus Point Court
Total properties in North America as of March 31, 2024
410 
17 
Development – placed into
service after January 1, 2023
Properties
751 Gateway Boulevard
15 Necco Street
325 Binney Street
6040 George Watts Hill Drive
Redevelopment – under construction Properties
840 Winter Street
40, 50, and 60 Sylvan Road
Alexandria Center® for Advanced Technologies – Monte Villa Parkway
651 Gateway Boulevard
401 Park Drive
8800 Technology Forest Place
311 Arsenal Street
Canada
Other
20 
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” in 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
(In thousands) 3/31/24 12/31/23 9/30/23 6/30/23 3/31/23
Income from rentals $ 755,551  $ 742,637  $ 707,531  $ 704,339  $ 687,949 
Rental revenues (581,400) (561,428) (526,352) (537,889) (518,302)
Tenant recoveries $ 174,151  $ 181,209  $ 181,179  $ 166,450  $ 169,647 

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.


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Definitions and Reconciliations (continued)
March 31, 2024
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)
3/31/24 12/31/23 9/30/23 6/30/23 3/31/23
Unencumbered net operating income
$ 546,830  $ 533,382  $ 495,012  $ 500,923  $ 492,860 
Encumbered net operating income
3,964  1,108  1,089  1,143  1,002 
Total net operating income $ 550,794  $ 534,490  $ 496,101  $ 502,066  $ 493,862 
Unencumbered net operating income as a percentage of total net operating income
99.3% 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 March 31, 2024, 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
(In thousands) 3/31/24 12/31/23 9/30/23 6/30/23 3/31/23
Basic shares for earnings per share 171,949  171,096  170,890  170,864  170,784 
Forward Agreements —  —  —  —  — 
Diluted shares for earnings per share 171,949  171,096  170,890  170,864  170,784 
Basic shares for funds from operations per share and funds from operations per share, as adjusted 171,949  171,096  170,890  170,864  170,784 
Forward Agreements —  —  —  —  — 
Diluted shares for funds from operations per share and funds from operations per share, as adjusted 171,949  171,096  170,890  170,864  170,784 
Weighted-average unvested restricted shares used in calculating the allocations of net income, funds from operations, and funds from operations, as adjusted 2,987  2,734  2,124  2,163  2,277