Filed Pursuant to Rule 433
Issuer Free Writing Prospectus
Registration File Nos: 333-222136 and 333-222136-01

Alexandria Real Estate Equities, Inc.
Fully and unconditionally guaranteed by Alexandria Real Estate Equities, L.P.

This pricing term sheet supplements Alexandria Real Estate Equities, Inc.’s preliminary prospectus supplement, dated June 12, 2018 (the “Preliminary Prospectus Supplement”), including the documents incorporated by reference therein, relating to this offering, and supersedes the information in the Preliminary Prospectus Supplement to the extent inconsistent with the information in the Preliminary Prospectus Supplement. In all other respects, this pricing term sheet is qualified in its entirety by reference to the Preliminary Prospectus Supplement.

Final Terms and Conditions Applicable to

$450,000,000 4.000% Senior Notes due 2024

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*                                         Note: A securities rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time.

**                                  The Issuer expects that delivery of the notes will be made to investors on or about June 21, 2018, which will be the seventh business day following the date of the prospectus supplement (such settlement being referred to as “T+7”). Under Rule 15c6-1 of the Exchange Act, trades in the secondary market generally are required to settle in two business days unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers who wish to trade the notes on the date of pricing of the notes or the next four succeeding business days will be required, by virtue of the fact that the notes initially will settle in T+7 to specify an alternative settlement cycle at the time of any such trade to prevent failed settlement and should consult their own advisors.

The Issuer and the Guarantor have filed a registration statement (including a prospectus) with the Securities and Exchange Commission (the “SEC”) for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents that the Issuer and the Guarantor have filed with the SEC for more complete information about the Issuer, the Guarantor and this offering.

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You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the Issuer, the Guarantor, any underwriter or any dealer participating in the offering will arrange to send you the prospectus and the accompanying prospectus supplement if you request it by contacting: J.P. Morgan Securities LLC, 383 Madison Avenue, New York, NY 10179, Attn: Investment Grade Syndicate Desk — 3rd floor, telephone collect: 212-834-4533; Citigroup Global Markets Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, telephone toll-free: 800-831-9146 or e-mail: prospectus@citi.com; Goldman Sachs & Co. LLC, Prospectus Department, 200 West Street, New York, NY 10282, telephone: 866-471-2526, fax: 212-902-9316 or e-mail: prospectus-ny@ny.email.gs.com; or Merrill Lynch, Pierce, Fenner & Smith Incorporated, telephone: 800-294-1322.

Final Terms and Conditions Applicable to
$450,000,000 4.700% Senior Notes due 2030

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*                                         Note: A securities rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time.

**                                  The Issuer expects that delivery of the notes will be made to investors on or about June 21, 2018, which will be the seventh business day following the date of the prospectus supplement (such settlement being referred to as “T+7”). Under Rule 15c6-1 of the Exchange Act, trades in the secondary market generally are required to settle in two business days unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers who wish to trade the notes on the date of pricing of the notes or the next four succeeding business days will be required, by virtue of the fact that the notes initially will settle in T+7 to specify an alternative settlement cycle at the time of any such trade to prevent failed settlement and should consult their own advisors.

The Issuer and the Guarantor have filed a registration statement (including a prospectus) with the Securities and Exchange Commission (the “SEC”) for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents that the Issuer and the Guarantor have filed with the SEC for more complete information about the Issuer, the Guarantor and this offering.

You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the Issuer, the Guarantor, any underwriter or any dealer participating in the offering will arrange to send you the prospectus and the accompanying prospectus supplement if you request it by contacting: J.P. Morgan Securities LLC, 383 Madison Avenue, New York, NY 10179, Attn: Investment Grade Syndicate Desk — 3rd floor, telephone collect: 212-834-4533; Citigroup Global Markets Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, telephone toll-free: 800-831-9146 or e-mail: prospectus@citi.com; Goldman Sachs & Co. LLC, Prospectus Department, 200 West Street, New York, NY 10282, telephone: 866-471-2526, fax: 212-902-9316 or e-mail: prospectus-ny@ny.email.gs.com; or Merrill Lynch, Pierce, Fenner & Smith Incorporated, telephone: 800-294-1322.

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