<div id="readability-page-1"><article>COLUMBIA, Md.--(BUSINESS WIRE)--COPT Defense Properties (NYSE: CDP) (“COPT Defense” or the “Company”) announced that its President and CEO, Stephen E. Budorick, will provide an update on the Company and participate in a question and answer session at Nareit’s REITweek: 2026 Investor Conference. The presentation will be held on June 2, 2026 at 8:45 a.m. Eastern Time at the New York Hilton Midtown in New York, NY.A live audio webcast of the presentation and accompanying materials will be available in the ‘News &amp; Events – IR Calendar’ section of COPT’s Investors website:https://investors.copt.com/news-events/ir-calendarAbout COPT DefenseCOPT Defense, an S&amp;P MidCap 400 Company, is a self-managed REIT focused on owning, operating and developing properties in locations proximate to, or sometimes containing, key U.S. Government (“USG”) defense installations and missions (referred to as its Defense/IT Portfolio). The Company’s tenants include the USG and their defense contractors, who are primarily engaged in priority national security activities, and who generally require mission-critical and high security property enhancements. As of March 31, 2026, the Company’s Defense/IT Portfolio of 201 properties, including 24 owned through unconsolidated joint ventures, encompassed 23.2 million square feet and was 96.4% leased.Forward-Looking InformationThis press release may contain “forward-looking” statements, as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, that are based on the Company’s current expectations, estimates and projections about future events and financial trends affecting the Company. Forward-looking statements can be identified by the use of words such as “may,” “will,” “should,” “could,” “believe,” “anticipate,” “expect,” “estimate,” “plan,” or other comparable terminology. Forward-looking statements are inherently subject to risks and uncertainties, many of which the Company cannot predict with accuracy and some of which the Company might not even anticipate. Although the Company believes that the expectations, estimates, and projections reflected in such forward-looking statements are based on reasonable assumptions at the time made, the Company can give no assurance that these expectations, estimates, and projections will be achieved. Future events and actual results may differ materially from those discussed in the forward-looking statements and the Company undertakes no obligation to update or supplement any forward-looking statements.The areas of risk that may affect these expectations, estimates, and projections include, but are not limited to, those risks described in Item 1A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.Source: COPT Defense Properties<img src="https://imageproxy.pbkrs.com/https://cts.businesswire.com/ct/CT/query-ZGlzdHJvPW54JmlkPWJ3bmV3cyZsYW5nPWVuJnNpZD1hY3FyOCZzdHk9MjAyNjA1Mjc5MTgyNDdyMQ?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" original-src="https://imageproxy.pbkrs.com/https://cts.businesswire.com/ct/CT/query-ZGlzdHJvPW54JmlkPWJ3bmV3cyZsYW5nPWVuJnNpZD1hY3FyOCZzdHk9MjAyNjA1Mjc5MTgyNDdyMQ"/>View source version on businesswire.com: https://www.businesswire.com/news/home/20260527918247/en/IR Contacts: Venkat Kommineni, CFA 443.285.5587 venkat.kommineni@copt.comMichelle Layne 443.285.5452 michelle.layne@copt.comSource: COPT Defense Properties</article></div>

COPT Defense Properties (NYSE: CDP) will present at Nareit’s REITweek: 2026 Investor Conference on June 2, 2026, at 8:45 a.m. ET. CEO Stephen E. Budorick will provide updates and participate in a Q&A session. COPT Defense focuses on properties near U.S. Government defense installations, with a portfolio of 201 properties, 96.4% leased, totaling 23.2 million square feet as of March 31, 2026.

COPT Defense to Present at Nareit’s REITweek: 2026 Investor Conference | CDP Stock News