COPT DEFENSE PROPERTIES — Director's Dealing 2011

Jun 2, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CORPORATE OFFICE PROPERTIES TRUST (OFC)
CIK: 0000860546
Period of Report: 2011-05-31

Reporting Person: LINGAFELTER WAYNE (President of Affiliate)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-31	Common Shares	F	1406	—	Disposed	31446	Direct

Footnotes

F1: These shares were forfeited in a net share settlement in connection with restrictions lapsing on restricted shares.