DENTON ROBERT L

SEC source: 0001415889-22-006506 · form4-06132022_020644.xml · derivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 226,514

Underlying: Common Shares · 1,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The reporting person redeemed 1,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 1,000 Common Units, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day average closing price of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

F2 · derivative.exercise_date: Common Units are convertible upon issuance.

F1 · derivative.expiration_date: The reporting person redeemed 1,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 1,000 Common Units, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day average closing price of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

SEC source: 0001415889-22-006148 · form4-06062022_120624.xml · derivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 227,514

Underlying: Common Shares · 4,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The reporting person redeemed 4,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 4,000 Common Units, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day average closing price of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

F2 · derivative.exercise_date: Common Units are convertible upon issuance.

F1 · derivative.expiration_date: The reporting person redeemed 4,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 4,000 Common Units, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day average closing price of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

SEC source: 0001415889-22-005266 · form4-05192022_070540.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,941

SEC source: 0001415889-22-005052 · form4-05162022_020557.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,357

F1 · price: These restricted shares were granted as part of annual trustee compensation and will vest in one year from the grant date.

SEC source: 0001415889-22-004493 · form4-05032022_090550.xml · derivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 231,514

Underlying: Common Shares · 1,000 shares

Expires not disclosed

F1 · kind: The reporting person redeemed 1,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 1,000 Common Units, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day average closing price of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

F2 · derivative.exercise_date: Common Units are convertible upon issuance.

F1 · derivative.expiration_date: The reporting person redeemed 1,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 1,000 Common Units, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day average closing price of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

SEC source: 0001179110-22-002261 · edgar.xml · derivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 232,514

Underlying: Common Shares · 3,000 shares

Expires not disclosed

F1 · kind: The reporting person redeemed 3,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 3,000 Common Units, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day average closing price of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

F2 · derivative.exercise_date: Common Units are convertible upon issuance.

F1 · derivative.expiration_date: The reporting person redeemed 3,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 3,000 Common Units, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day average closing price of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

SEC source: 0001415889-22-002623 · form4-03072022_060318.xml · derivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 235,514

Underlying: Common Shares · 3,000 shares

Expires not disclosed

F1 · kind: The reporting person redeemed 3,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 3,000 Common Units, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day average closing price of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

F2 · derivative.exercise_date: Common Units are convertible upon issuance.

F1 · derivative.expiration_date: The reporting person redeemed 3,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 3,000 Common Units, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day average closing price of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

SEC source: 0001179110-22-001469 · edgar.xml · derivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 238,514

Underlying: Common Shares · 2,000 shares

Expires not disclosed

F1 · kind: The reporting person redeemed 2,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 2,000 Common Units, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day average closing price of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

F2 · derivative.exercise_date: Common Units are convertible upon issuance.

F1 · derivative.expiration_date: The reporting person redeemed 2,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 2,000 Common Units, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day average closing price of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

SEC source: 0001179110-21-009872 · edgar.xml · derivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 240,514

Underlying: Common Shares · 1,500 shares

Expires not disclosed

F1 · kind: The reporting person redeemed 1,500 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 1,500 shares, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day trailing average of the closing price of the issuer's common shares on the New York Stock Exchnage. Common Units have no expiration date.

F2 · derivative.exercise_date: Common Units are convertible upon issuance.

F1 · derivative.expiration_date: The reporting person redeemed 1,500 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 1,500 shares, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day trailing average of the closing price of the issuer's common shares on the New York Stock Exchnage. Common Units have no expiration date.

SEC source: 0001179110-21-008557 · edgar.xml · derivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 242,014

Underlying: Common Shares · 2,000 shares

Expires not disclosed

F1 · kind: The reporting person redeemed 2,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 2,000 shares, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day trailing average of the closing price of the issuer's common shares on the New York Stock Exchnage. Common Units have no expiration date.

F2 · derivative.exercise_date: Common Units are convertible upon issuance.

F1 · derivative.expiration_date: The reporting person redeemed 2,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 2,000 shares, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day trailing average of the closing price of the issuer's common shares on the New York Stock Exchnage. Common Units have no expiration date.

SEC source: 0001179110-21-006803 · edgar.xml · derivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 244,014

Underlying: Common Shares · 2,000 shares

Expires not disclosed

F1 · kind: The reporting person redeemed 2,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 2,000 shares, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day trailing average of the closing price of the issuer's common shares on the New York Stock Exchnage. Common Units have no expiration date.

F2 · derivative.exercise_date: Common Units are convertible upon issuance.

F1 · derivative.expiration_date: The reporting person redeemed 2,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 2,000 shares, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day trailing average of the closing price of the issuer's common shares on the New York Stock Exchnage. Common Units have no expiration date.

SEC source: 0001179110-21-005997 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,416

SEC source: 0001179110-21-005424 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,402

F1 · price: These restricted shares were granted as part of annual trustee compensation and will vest in one year from the grant date.

SEC source: 0001179110-21-005178 · edgar.xml · derivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 246,014

Underlying: Common Shares · 3,000 shares

Expires not disclosed

F1 · kind: The reporting person redeemed 3,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 3,000 shares, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day trailing average of the closing prices of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

F2 · derivative.exercise_date: Common Units are convertible upon issuance.

F1 · derivative.expiration_date: The reporting person redeemed 3,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 3,000 shares, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day trailing average of the closing prices of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

SEC source: 0001179110-21-004829 · edgar.xml · derivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 249,014

Underlying: Common Shares · 3,500 shares

Expires not disclosed

F1 · kind: The reporting person redeemed 3,500 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 3,500 shares, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day trailing average of the closing prices of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

F2 · derivative.exercise_date: Common Units are convertible upon issuance.

F1 · derivative.expiration_date: The reporting person redeemed 3,500 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. In the case of these 3,500 shares, the issuer elected to pay cash upon the conversion of the reporting person's Common Units, based on the 10-day trailing average of the closing prices of the issuer's common shares on the New York Stock Exchange. Common Units have no expiration date.

SEC source: 0001179110-21-003400 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,986

SEC source: 0001179110-21-003304 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,986

SEC source: 0001179110-21-003266 · edgar.xml · derivative · entry 2

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 252,514

Underlying: Common Shares · 3,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The reporting person redeemed 3,500 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversion of the reporting person's Common Units. Common Units have no expiration date.

F1 · kind: The reporting person redeemed 3,500 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversion of the reporting person's Common Units. Common Units have no expiration date.

F2 · derivative.exercise_date: Common Units are convertible upon issuance.

F1 · derivative.expiration_date: The reporting person redeemed 3,500 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversion of the reporting person's Common Units. Common Units have no expiration date.

SEC source: 0001179110-21-003266 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,486

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The reporting person redeemed 3,500 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversion of the reporting person's Common Units. Common Units have no expiration date.

F1 · price: The reporting person redeemed 3,500 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversion of the reporting person's Common Units. Common Units have no expiration date.

SEC source: 0001179110-21-001599 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,986

SEC source: 0001179110-21-001513 · edgar.xml · derivative · entry 2

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 256,014

Underlying: Common Shares · 4,554 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The reporting person redeemed 4,554 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversion of the reporting person's Common Units. Common Units have no expiration date.

F1 · kind: The reporting person redeemed 4,554 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversion of the reporting person's Common Units. Common Units have no expiration date.

F2 · derivative.exercise_date: Common Units are convertible upon issuance.

F1 · derivative.expiration_date: The reporting person redeemed 4,554 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversion of the reporting person's Common Units. Common Units have no expiration date.

SEC source: 0001179110-21-001513 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,540

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The reporting person redeemed 4,554 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversion of the reporting person's Common Units. Common Units have no expiration date.

F1 · price: The reporting person redeemed 4,554 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversion of the reporting person's Common Units. Common Units have no expiration date.

SEC source: 0001179110-20-011195 · edgar.xml · nonDerivative · entry 2

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,986

SEC source: 0001179110-20-011195 · edgar.xml · derivative · entry 3

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 260,568

Underlying: Common Shares · 2,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The reporting person redeemed 2,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversation of the reporting person's Common Units. Common Units have no expiration date.

F1 · kind: The reporting person redeemed 2,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversation of the reporting person's Common Units. Common Units have no expiration date.

F2 · derivative.exercise_date: Common Units are convertible upon issuance.

F1 · derivative.expiration_date: The reporting person redeemed 2,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversation of the reporting person's Common Units. Common Units have no expiration date.

SEC source: 0001179110-20-011195 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,986

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The reporting person redeemed 2,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversation of the reporting person's Common Units. Common Units have no expiration date.

F1 · price: The reporting person redeemed 2,000 common units of limited partnership interest ("Common Units") of Corporate Office Properties, L.P., of which the issuer is the general partner. Common Units are convertible into an equal number of the issuer's common shares of beneficial interest or, at the election of the issuer, cash equal to the fair market value of such shares. The issuer elected to issue common shares upon the conversation of the reporting person's Common Units. Common Units have no expiration date.

SEC source: 0001179110-20-006843 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 266,554

SEC source: 0001179110-20-006798 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 268,270

SEC source: 0001179110-20-006585 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 269,986

F1 · price: These deferred shares were granted as part of annual trustee compensation and will vest in one year from the grant date.

SEC source: 0001179110-20-001487 · edgar.xml · nonDerivative · entry 3

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,432

SEC source: 0001179110-20-001487 · edgar.xml · nonDerivative · entry 2

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,432

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Acquired through the conversion of COPLP Units.

SEC source: 0001179110-20-001487 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 262,568

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Converted into Common Shares of COPT.

SEC source: 0001179110-19-011552 · edgar.xml · nonDerivative · entry 3

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,432

SEC source: 0001179110-19-011552 · edgar.xml · nonDerivative · entry 2

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,432

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Acquired through the conversion of COPLP Units.

SEC source: 0001179110-19-011552 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 267,568

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Converted into Common Shares of COPT.

SEC source: 0001179110-19-010311 · edgar.xml · nonDerivative · entry 3

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,432

SEC source: 0001179110-19-010311 · edgar.xml · nonDerivative · entry 2

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,864

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Acquired through the conversion of COPLP Units.

SEC source: 0001179110-19-010311 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 269,568

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Converted into Common Shares.

SEC source: 0001179110-19-008991 · edgar.xml · nonDerivative · entry 3

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,432

SEC source: 0001179110-19-008991 · edgar.xml · nonDerivative · entry 2

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,432

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Acquired through conversion of COPLP Units.

SEC source: 0001179110-19-008991 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 272,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Converted into Common Shares.

SEC source: 0001179110-19-006063 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 279,432

SEC source: 0001179110-19-005963 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 282,890

F1 · price: These deferred shares were granted as part of annual trustee compensation and will vest in one year from the grant date.

SEC source: 0001179110-19-003794 · edgar.xml · nonDerivative · entry 3

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,458

SEC source: 0001179110-19-003794 · edgar.xml · nonDerivative · entry 2

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,458

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Acquired through conversion of COPLP Units.

SEC source: 0001179110-19-003794 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 276,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Converted into Common Shares.

SEC source: 0001179110-19-001810 · edgar.xml · nonDerivative · entry 3

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,458

SEC source: 0001179110-19-001810 · edgar.xml · nonDerivative · entry 2

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,958

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Acquired through conversion of COPLP Units.

SEC source: 0001179110-19-001810 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 280,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Converted into Common Shares.

SEC source: 0001179110-18-010542 · edgar.xml · nonDerivative · entry 1

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,458

SEC source: 0001179110-18-010429 · edgar.xml · nonDerivative · entry 2

DENTON ROBERT L · CIK 0001250536 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,458

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Acquired through conversion of COPLP Units.