COPT DEFENSE PROPERTIES

For the period ended Mar 31, 2026. Filed May 6, 2026.

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Mar 31, 2026 · Filed May 6, 2026

CDP$33.46+1.8%Stored close · as of Nov 9, 2026

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Contents

Item 6. Exhibits

(a) Exhibits.

EXHIBITNO.	DESCRIPTION
10.1	COPT Defense Properties and COPT Defense Properties, L.P. Second Amended and Restated Executive Change in Control and Severance Plan adopted January 30, 2026 (filed with the Company’s Current Report on Form 8-K on February 4, 2026 and incorporated herein by reference).
10.2	Letter Agreement, dated January 30, 2026, between COPT Defense Properties, COPT Defense Properties, L.P., and Stephen E. Budorick (filed with the Company’s Current Report on Form 8-K on February 4, 2026 and incorporated herein by reference).
10.3	Letter Agreement, dated January 30, 2026, between COPT Defense Properties, COPT Defense Properties, L.P., and Britt A. Snider (filed with the Company’s Current Report on Form 8-K on February 4, 2026 and incorporated herein by reference).
10.4	Letter Agreement, dated January 30, 2026, between COPT Defense Properties, COPT Defense Properties, L.P., and Anthony Mifsud (filed with the Company’s Current Report on Form 8-K on February 4, 2026 and incorporated herein by reference).
10.5	Form of COPT Defense Properties Restricted Share Award Certificate (2017 Omnibus Equity and Incentive Plan) (filed herewith).
22.1	List of Subsidiary Issuers of Guaranteed Securities (filed herewith).
31.1	Certification of the Chief Executive Officer of COPT Defense Properties required by Rule 13a-14(a) under the Securities Exchange Act of 1934, as amended (filed herewith).
31.2	Certification of the Chief Financial Officer of COPT Defense Properties required by Rule 13a-14(a) under the Securities Exchange Act of 1934, as amended (filed herewith).
32.1	Certification of the Chief Executive Officer of COPT Defense Properties required by Rule 13a-14(b) under the Securities Exchange Act of 1934, as amended. (This exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section. Further, this exhibit shall not be deemed to be incorporated by reference into any filing under the Securities Exchange Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended.) (Furnished herewith).
32.2	Certification of the Chief Financial Officer of COPT Defense Properties required by Rule 13a-14(b) under the Securities Exchange Act of 1934, as amended. (This exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section. Further, this exhibit shall not be deemed to be incorporated by reference into any filing under the Securities Exchange Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended). (Furnished herewith).
101.INS	XBRL Instance Document - The instance document does not appear in the interactive data file because its XBRL tags are embedded within the Inline XBRL document (filed herewith).
101.SCH	Inline XBRL Taxonomy Extension Schema Document (filed herewith).
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document (filed herewith).
101.LAB	Inline XBRL Extension Labels Linkbase (filed herewith).
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document (filed herewith).
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document (filed herewith).
104	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).

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