IT

SEC source: 0001127602-20-023381 · form4.xml · nonDerivative · entry 1

Dawkins Alwyn · CIK 0001439796 · EVP, Global Business Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,752

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 · shares: Represents shares acquired upon release of RSUs, which convert into common stock on a one-for-one basis. These RSUs vest in four substantially equal annual installments, commencing August 10, 2018. This represents the 2020 installment.

SEC source: 0001127602-20-023377 · form4.xml · derivative · entry 8

Kranich Robin B · CIK 0001308381 · EVP, Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 373

Underlying: Common Stock · 373 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.

F4 · shares: Represents shares acquired upon release of RSUs, which convert into common stock on a one-for-one basis. These RSUs vest in four substantially equal annual installments, commencing August 10, 2018. This represents the 2020 installment.

F4 · derivative.exercise_date: Represents shares acquired upon release of RSUs, which convert into common stock on a one-for-one basis. These RSUs vest in four substantially equal annual installments, commencing August 10, 2018. This represents the 2020 installment.

F4 · derivative.expiration_date: Represents shares acquired upon release of RSUs, which convert into common stock on a one-for-one basis. These RSUs vest in four substantially equal annual installments, commencing August 10, 2018. This represents the 2020 installment.

SEC source: 0001127602-20-023377 · form4.xml · derivative · entry 7

Kranich Robin B · CIK 0001308381 · EVP, Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,837

Underlying: Common Stock · 5,419 shares

Expires 2023-02-08

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.

F5 · derivative.exercise_date: These SARs became exercisable in four substantially equal annual installments commencing on February 8, 2017 and are fully exercisable.

SEC source: 0001127602-20-023377 · form4.xml · nonDerivative · entry 6

Kranich Robin B · CIK 0001308381 · EVP, Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,459

F3 · shares: Represents shares withheld for the payment of applicable income and payroll withholding taxes.

SEC source: 0001127602-20-023377 · form4.xml · nonDerivative · entry 5

Kranich Robin B · CIK 0001308381 · EVP, Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,658

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.

F4 · shares: Represents shares acquired upon release of RSUs, which convert into common stock on a one-for-one basis. These RSUs vest in four substantially equal annual installments, commencing August 10, 2018. This represents the 2020 installment.

SEC source: 0001127602-20-023377 · form4.xml · nonDerivative · entry 4

Kranich Robin B · CIK 0001308381 · EVP, Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,285

F3 · shares: Represents shares withheld for the payment of applicable income and payroll withholding taxes.

SEC source: 0001127602-20-023377 · form4.xml · nonDerivative · entry 3

Kranich Robin B · CIK 0001308381 · EVP, Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,428

F2 · shares: Represents shares withheld that had an aggregate value, based on the market price on the date of exercise, substantially equal to the aggregate exercise price of the SARs.

SEC source: 0001127602-20-023377 · form4.xml · nonDerivative · entry 2

Kranich Robin B · CIK 0001308381 · EVP, Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,700

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 · shares: Represents shares acquired upon the exercise of SARs.

SEC source: 0001127602-20-023377 · form4.xml · nonDerivative · entry 1

Kranich Robin B · CIK 0001308381 · EVP, Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,281

SEC source: 0001127602-20-023271 · form4.xml · nonDerivative · entry 2

Dawkins Alwyn · CIK 0001439796 · EVP, Global Business Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,379

SEC source: 0001127602-20-023271 · form4.xml · nonDerivative · entry 1

Dawkins Alwyn · CIK 0001439796 · EVP, Global Business Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,804

SEC source: 0001127602-20-023268 · form4.xml · nonDerivative · entry 2

SMITH JAMES C · CIK 0001183693 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 784,506

F1 · shares: The sale was made in connection with the reporting person's estate planning.

F3 · price: This transaction was executed in multiple trades at prices ranging from $131.34 to $131.57. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001127602-20-023269 · form4.xml · nonDerivative · entry 1

Diliberto Michael Patrick · CIK 0001680446 · EVP, Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,033

SEC source: 0001127602-20-023267 · form4.xml · nonDerivative · entry 7

Davis Kendall B · CIK 0001339793 · EVP, Products and Services

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 142,359

F4 · shares: This transaction was executed in multiple trades at prices ranging from $130.26 to $131.53. The price above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001127602-20-023268 · form4.xml · nonDerivative · entry 1

SMITH JAMES C · CIK 0001183693 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 794,506

F1 · shares: The sale was made in connection with the reporting person's estate planning.

F2 · price: This transaction was executed in multiple trades at prices ranging from $130.21 to $130.81. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001127602-20-023267 · form4.xml · derivative · entry 9

Davis Kendall B · CIK 0001339793 · EVP, Products and Services

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 21,675 shares

Expires 2023-02-08

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.

F6 · derivative.exercise_date: These SARs became exercisable in four substantially equal annual installments, commencing on February 8, 2017 and are fully exercisable.

SEC source: 0001127602-20-023267 · form4.xml · derivative · entry 8

Davis Kendall B · CIK 0001339793 · EVP, Products and Services

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 18,855 shares

Expires 2022-02-09

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.

F5 · derivative.exercise_date: These SARs became exercisable in four substantially equal annual installments, commencing on February 9, 2016 and are fully exercisable.

SEC source: 0001127602-20-023267 · form4.xml · nonDerivative · entry 6

Davis Kendall B · CIK 0001339793 · EVP, Products and Services

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 150,947

F3 · shares: Represents shares withheld for the payment of applicable income and payroll withholding taxes.

SEC source: 0001127602-20-023267 · form4.xml · nonDerivative · entry 5

Davis Kendall B · CIK 0001339793 · EVP, Products and Services

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,836

F2 · shares: Represents shares withheld that had an aggregate value, based on the market price on the date of exercise, substantially equal to the aggregate exercise price of the SARs.

SEC source: 0001127602-20-023267 · form4.xml · nonDerivative · entry 4

Davis Kendall B · CIK 0001339793 · EVP, Products and Services

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 168,118

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 · shares: Represents shares acquired upon the exercise of SARs.

SEC source: 0001127602-20-023267 · form4.xml · nonDerivative · entry 3

Davis Kendall B · CIK 0001339793 · EVP, Products and Services

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 146,443

F3 · shares: Represents shares withheld for the payment of applicable income and payroll withholding taxes.

SEC source: 0001127602-20-023267 · form4.xml · nonDerivative · entry 2

Davis Kendall B · CIK 0001339793 · EVP, Products and Services

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 149,969

F2 · shares: Represents shares withheld that had an aggregate value, based on the market price on the date of exercise, substantially equal to the aggregate exercise price of the SARs.

SEC source: 0001127602-20-023267 · form4.xml · nonDerivative · entry 1

Davis Kendall B · CIK 0001339793 · EVP, Products and Services

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 161,214

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 · shares: Represents shares acquired upon the exercise of SARs.

SEC source: 0001127602-20-023069 · form4.xml · nonDerivative · entry 1

Dawkins Alwyn · CIK 0001439796 · EVP, Global Business Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,204

SEC source: 0001127602-20-021210 · form4.xml · derivative · entry 6

GRABE WILLIAM O · CIK 0001185567 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,197

Underlying: Common Stock · 161 shares

Expires not disclosed

F1 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

F5 · derivative.exercise_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner common stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

F5 · derivative.expiration_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner common stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

SEC source: 0001127602-20-021210 · form4.xml · derivative · entry 5

GRABE WILLIAM O · CIK 0001185567 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,358

Underlying: Common Stock · 161 shares

Expires not disclosed

F5 · derivative.exercise_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner common stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

F5 · derivative.expiration_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner common stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

SEC source: 0001127602-20-021210 · form4.xml · nonDerivative · entry 1

GRABE WILLIAM O · CIK 0001185567 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,072

F1 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

SEC source: 0001127602-20-021213 · form4.xml · derivative · entry 1

BRESSLER RICHARD J · CIK 0001200604 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,231

Underlying: Common Stock · 187 shares

Expires not disclosed

F1 · derivative.exercise_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

F1 · derivative.expiration_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

SEC source: 0001127602-20-021208 · form4.xml · derivative · entry 3

FUCHS ANNE SUTHERLAND · CIK 0001246335 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,577

Underlying: Common Stock · 96 shares

Expires not disclosed

F1 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

F2 · derivative.exercise_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

F2 · derivative.expiration_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

SEC source: 0001127602-20-021208 · form4.xml · derivative · entry 2

FUCHS ANNE SUTHERLAND · CIK 0001246335 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,673

Underlying: Common Stock · 96 shares

Expires not disclosed

F2 · derivative.exercise_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

F2 · derivative.expiration_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

SEC source: 0001127602-20-021208 · form4.xml · nonDerivative · entry 1

FUCHS ANNE SUTHERLAND · CIK 0001246335 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,987

F1 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

SEC source: 0001127602-20-021198 · form4.xml · derivative · entry 3

SMITH JAMES C · CIK 0001183693 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 364 shares

Expires not disclosed

F1 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

F2 · derivative.exercise_date: These are Common Stock Equivalents ("CSEs") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

F2 · derivative.expiration_date: These are Common Stock Equivalents ("CSEs") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

SEC source: 0001127602-20-021198 · form4.xml · derivative · entry 2

SMITH JAMES C · CIK 0001183693 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 364

Underlying: Common Stock · 364 shares

Expires not disclosed

F2 · derivative.exercise_date: These are Common Stock Equivalents ("CSEs") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

F2 · derivative.expiration_date: These are Common Stock Equivalents ("CSEs") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

SEC source: 0001127602-20-021198 · form4.xml · nonDerivative · entry 1

SMITH JAMES C · CIK 0001183693 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 804,506

F1 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

SEC source: 0001127602-20-021202 · form4.xml · derivative · entry 1

Bisson Peter · CIK 0001650029 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,128

Underlying: Common Stock · 141 shares

Expires not disclosed

F1 · derivative.exercise_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

F1 · derivative.expiration_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

SEC source: 0001127602-20-021193 · form4.xml · derivative · entry 1

Serra Eileen · CIK 0001721344 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,370

Underlying: Common Stock · 146 shares

Expires not disclosed

F1 · derivative.exercise_date: These are Common Stock Equivalents ("CSEs") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

F1 · derivative.expiration_date: These are Common Stock Equivalents ("CSEs") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

SEC source: 0001127602-20-021191 · form4.xml · derivative · entry 3

PAGLIUCA STEPHEN G · CIK 0001240386 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,668

Underlying: Common Stock · 125 shares

Expires not disclosed

F1 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

F2 · derivative.exercise_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

F2 · derivative.expiration_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

SEC source: 0001127602-20-021191 · form4.xml · derivative · entry 2

PAGLIUCA STEPHEN G · CIK 0001240386 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,793

Underlying: Common Stock · 125 shares

Expires not disclosed

F2 · derivative.exercise_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

F2 · derivative.expiration_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

SEC source: 0001127602-20-021191 · form4.xml · nonDerivative · entry 1

PAGLIUCA STEPHEN G · CIK 0001240386 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 62,090

F1 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

SEC source: 0001127602-20-021182 · form4.xml · derivative · entry 1

DYKSTRA KAREN E · CIK 0001198848 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,681

Underlying: Common Stock · 78 shares

Expires not disclosed

F1 · derivative.exercise_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

F1 · derivative.expiration_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

SEC source: 0001127602-20-021179 · form4.xml · derivative · entry 3

CESAN RAUL E · CIK 0001023201 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,063

Underlying: Common Stock · 146 shares

Expires not disclosed

F1 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

F2 · derivative.exercise_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

F2 · derivative.expiration_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

SEC source: 0001127602-20-021179 · form4.xml · derivative · entry 2

CESAN RAUL E · CIK 0001023201 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,209

Underlying: Common Stock · 146 shares

Expires not disclosed

F2 · derivative.exercise_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

F2 · derivative.expiration_date: These are Common Stock Equivalents ("CSE") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Company's 2014 Long-Term Incentive Plan ("2014 LTIP"). The CSEs convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2014 LTIP.

SEC source: 0001127602-20-021179 · form4.xml · nonDerivative · entry 1

CESAN RAUL E · CIK 0001023201 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,074

F1 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

SEC source: 0001127602-20-019380 · form4.xml · derivative · entry 1

Bisson Peter · CIK 0001650029 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,744

Underlying: Common Stock · 1,744 shares

Expires not disclosed

F1 · derivative.exercise_date: One hundred percent (100%) of the RSUs shall vest on June 8, 2021, subject to Grantee's continued service as a director through such date.

F1 · derivative.expiration_date: One hundred percent (100%) of the RSUs shall vest on June 8, 2021, subject to Grantee's continued service as a director through such date.

SEC source: 0001127602-20-019378 · form4.xml · derivative · entry 1

BRESSLER RICHARD J · CIK 0001200604 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,744

Underlying: Common Stock · 1,744 shares

Expires not disclosed

F1 · derivative.exercise_date: One hundred percent (100%) of the RSUs shall vest on June 8, 2021, subject to Grantee's continued service as a director through such date.

F1 · derivative.expiration_date: One hundred percent (100%) of the RSUs shall vest on June 8, 2021, subject to Grantee's continued service as a director through such date.

SEC source: 0001127602-20-019377 · form4.xml · derivative · entry 1

CESAN RAUL E · CIK 0001023201 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,744

Underlying: Common Stock · 1,744 shares

Expires not disclosed

F1 · derivative.exercise_date: One hundred percent (100%) of the RSUs shall vest on June 8, 2021, subject to Grantee's continued service as a director through such date.

F1 · derivative.expiration_date: One hundred percent (100%) of the RSUs shall vest on June 8, 2021, subject to Grantee's continued service as a director through such date.

SEC source: 0001127602-20-019375 · form4.xml · derivative · entry 1

DYKSTRA KAREN E · CIK 0001198848 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,744

Underlying: Common Stock · 1,744 shares

Expires not disclosed

F1 · derivative.exercise_date: One hundred percent (100%) of the RSUs shall vest on June 8, 2021, subject to Grantee's continued service as a director through such date.

F1 · derivative.expiration_date: One hundred percent (100%) of the RSUs shall vest on June 8, 2021, subject to Grantee's continued service as a director through such date.

SEC source: 0001127602-20-019373 · form4.xml · derivative · entry 1

FUCHS ANNE SUTHERLAND · CIK 0001246335 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,744

Underlying: Common Stock · 1,744 shares

Expires not disclosed

F1 · derivative.exercise_date: One hundred percent (100%) of the RSUs shall vest on June 8, 2021, subject to Grantee's continued service as a director through such date.

F1 · derivative.expiration_date: One hundred percent (100%) of the RSUs shall vest on June 8, 2021, subject to Grantee's continued service as a director through such date.

SEC source: 0001127602-20-019372 · form4.xml · derivative · entry 1

GRABE WILLIAM O · CIK 0001185567 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,744

Underlying: Common Stock · 1,744 shares

Expires not disclosed

F1 · derivative.exercise_date: One hundred percent (100%) of the RSUs shall vest on June 8, 2021, subject to Grantee's continued service as a director through such date.

F1 · derivative.expiration_date: One hundred percent (100%) of the RSUs shall vest on June 8, 2021, subject to Grantee's continued service as a director through such date.

SEC source: 0001127602-20-019371 · form4.xml · derivative · entry 1

PAGLIUCA STEPHEN G · CIK 0001240386 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,744

Underlying: Common Stock · 1,744 shares

Expires not disclosed

F1 · derivative.exercise_date: One hundred percent (100%) of the RSUs shall vest on June 8, 2021, subject to Grantee's continued service as a director through such date.

F1 · derivative.expiration_date: One hundred percent (100%) of the RSUs shall vest on June 8, 2021, subject to Grantee's continued service as a director through such date.