Ownership Submission

FORM 4

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:

3235-0287

Estimated average burden hours per response...

0.5

(Print or Type Responses)

1. Name and Address of Reporting Person ^*

KESLER STEVEN D

2. Issuer Name and Ticker or Trading Symbol
CORPORATE OFFICE PROPERTIES TRUST [OFC]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

__X__ Director	_____ 10% Owner
_____ Officer (give title below)	_____ Other (specify below)

(Last)

(First)

(Middle)

6711 COLUMBIA GATEWAY DRIVE, SUITE 300

3. Date of Earliest Transaction (Month/Day/Year)
07/16/2019

(Street)

COLUMBIA, MD 21046

4. If Amendment, Date Original Filed(Month/Day/Year)

6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

(City)

(State)

(Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1.Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
COPT-Common Shares	07/16/2019		P		7.00 ⁽¹⁾	A	$ 26.97	42,152 ⁽²⁾	D
COPT-Common Shares	10/14/2019		P		6.20 ⁽¹⁾ ⁽³⁾	A	$ 28.98	42,152 ⁽²⁾	D
COPT-Common Shares	01/14/2020		P		6.10 ⁽¹⁾ ⁽³⁾	A	$ 29.71	42,152 ⁽²⁾	D
COPT-Common Shares	04/14/2020		P		7.20 ⁽¹⁾ ⁽³⁾	A	$ 25.38	42,152 ⁽²⁾	D
COPT-Common Shares	07/14/2020		P		7.20 ⁽¹⁾ ⁽³⁾	A	$ 25.91	42,152 ⁽²⁾	D
COPT-Common Shares	10/14/2020		P		7.60 ⁽¹⁾	A	$ 24.52	42,152 ⁽²⁾	D
COPT-Common Shares	01/14/2021		P		7.30 ⁽¹⁾	A	$ 26.07	42,152 ⁽²⁾	D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.		SEC 1474 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security
(Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code
(Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date
(Month/Day/Year)

7. Title and Amount of Underlying Securities
(Instr. 3 and 4)

8. Price of Derivative Security
(Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)

11. Nature of Indirect Beneficial Ownership
(Instr. 4)

Code

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
KESLER STEVEN D 6711 COLUMBIA GATEWAY DRIVE SUITE 300 COLUMBIA, MD 21046	X

Signatures

David L. Finch, by Power of Attorney		03/24/2021
^**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Shares purchased by an account of which the reporting person was, at the time of purchase, a joint owner with his adult daughter. The reporting person is no longer a joint owner of such account and thus, as of the date of this report, has no beneficial ownership interest in these shares.
(2)	Because the reporting person has no beneficial ownership interest in these shares as of the date of this report, these shares are not included in the total shares owned by the reporting person.
(3)	The purchases by the reporting person on October 14, 2019, January 14, 2020, April 14, 2020 and July 14, 2020 were within six months of the sale by the reporting person on February 14, 2020 of 1,000 common shares at a price per share of $30.00. As a result, such purchases were matchable with such sale under Section 16(b) of the Securities Exchange Act of 1934, as amended. The reporting person has disgorged $70.71 to the issuer, representing the full amount of the profit realized in connection with such short swing transactions.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.