SCHEDULE 14A INFORMATION
Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934

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Filed by a Party other than the Registrant ☐

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Preliminary Proxy Statement

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Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

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Definitive Proxy Statement

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Definitive Additional Materials

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Soliciting Material Pursuant to § 240.14a-12

LEXINGTON REALTY TRUST

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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 The Sample Company Online Go to www.envisionreports.com/LXP or scan the QR code — login details are located in the shaded bar below. Shareholder Meeting Notice Important Notice Regarding the Availability of Proxy Materials for the Lexington Realty Trust Shareholder Meeting to be Held on May 18, 2021 Under Securities and Exchange Commission rules, you are receiving this notice that the proxy materials for the annual shareholders’ meeting are available on the Internet. Follow the instructions below to view the materials and authorize a proxy to vote your shares online or request a copy. The items to be voted on and location of the annual meeting are on the reverse side. Your vote is important! This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The 2021 Proxy Statement and 2020 Annual Report to shareholders are available at: www.envisionreports.com/LXP Easy Online Access — View your proxy materials and vote. Step 1:Go to www.envisionreports.com/LXP. Step 2:Click on Cast Your Vote or Request Materials. Step 3:Follow the instructions on the screen to log in. Step 4:Make your selections as instructed on each screen for your delivery preferences. Step 5:Vote your shares. When you go online, you can also help the environment by consenting to receive electronic delivery of future materials. Obtaining a Copy of the Proxy Materials – If you want to receive a copy of the proxy materials, you must request one. There is no charge to you for requesting a copy. Please make your request as instructed on the reverse side on or before May 7, 2021 to facilitate timely delivery. 03DXSA 2 N O T+

 Shareholder Meeting Notice Lexington Realty Trust's Annual Meeting of Shareholders will be held on May 18, 2021 at 10:00 a.m. Eastern Time virtually via the internet at www.meetingcenter.io/227839487. To access the virtual meeting, you must have the information that is printed in the shaded bar located on the reverse side of this form. The password for this meeting is — LXP2021. Proposals to be voted on at the meeting and any postponement or adjournment thereof are listed below along with the Board of Trustees' recommendations. The Board of Trustees recommend a vote FOR all the nominees listed and FOR Proposals 2 and 3: Election of Trustees 01 - T. Wilson Eglin 02 - Richard S. Frary 03 - Lawrence L. Gray 04 - Jamie Handwerker 05 - Claire A. Koeneman 06 - Howard Roth To consider and vote upon an advisory, non-binding resolution to approve the compensation of the named executive officers, as disclosed in the accompanying proxy statement; To consider and vote upon the ratification of the appointment of Deloitte & Touche LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2021; and To transact such other business as may properly come before the 2021 Annual Meeting of Shareholders or any adjournment or postponement thereof. PLEASE NOTE – YOU CANNOT VOTE BY RETURNING THIS NOTICE. To authorize a proxy to vote your shares you must go online or request a paper copy of the proxy materials to receive a proxy card. Here’s how to order a copy of the proxy materials and select delivery preferences: Current and future delivery requests can be submitted using the options below. If you request an email copy, you will receive an email with a link to the current meeting materials. PLEASE NOTE: You must use the number in the shaded bar on the reverse side when requesting a copy of the proxy materials. Internet – Go to www.envisionreports.com/LXP. Click Cast Your Vote or Request Materials. Phone – Call us free of charge at 1-866-641-4276. Email – Send an email to investorvote@computershare.com with “Proxy Materials Lexington Realty Trust” in the subject line. Include your full name and address, plus the number located in the shaded bar on the reverse side, and state that you want a paper copy of the meeting materials. To facilitate timely delivery, all requests for a paper copy of proxy materials must be received by May 7, 2021.