COPT Defense Properties (NYSE:CDP) ("COPT Defense" or the "Company") announced the 2024 tax treatment of its common share distributions as described below. Shareholders are encouraged to consult with their tax advisors as to their specific tax treatment of COPT Defense common share distributions.

Please note that the common share distributions with a record date of December 31, 2024, and payment date of January 15, 2025, are allocated to 2024 for income tax purposes.

The table below summarizes the income tax treatment of 2024 distributions:

Common Shares (CUSIP #22002T108)
Record Date	Payment Date	Total Distribution per Share		Total Distribution Allocable to 2024		2024 Taxable Ordinary Dividends		2024 Total Capital Gain Distribution		2024 Return of Capital		2024 Unrecaptured Section 1250 Gain		2024 Section 199A Dividend (1)

03/29/2024	04/17/2024	$	0.2950	$	0.2950	$	0.2950	$	-	$	-	$	-	$	0.2950
06/28/2024	07/17/2024	$	0.2950	$	0.2950	$	0.2950	$	-	$	-	$	-	$	0.2950
09/30/2024	10/17/2024	$	0.2950	$	0.2950	$	0.2950	$	-	$	-	$	-	$	0.2950
12/31/2024	01/15/2025	$	0.2950	$	0.2950	$	0.2950	$	-	$	-	$	-	$	0.2950

		$	1.1800	$	1.1800	$	1.1800	$	-	$	-	$	-	$	1.1800

		(1) Section 199A Dividend is a subset of, and is included in, the Taxable Ordinary Dividend Amount.

About COPT Defense

COPT Defense, an S&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 September 30, 2024, the Company's Defense/IT Portfolio of 194 properties, including 24 owned through unconsolidated joint ventures, encompassed 22.2 million square feet and was 96.5% leased.

Forward-Looking Information

This 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, 2023.

Source: COPT Defense Properties

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IR Contacts:

Venkat Kommineni, CFA

443.285.5587

venkat.kommineni@copt.com

Michelle Layne

443.285.5452

michelle.layne@copt.com