IT

SEC source: 0001127602-20-004738 · form4.xml · nonDerivative · entry 4

Kranich Robin B · CIK 0001308381 · EVP, Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,719

F2 · shares: Represents shares withheld for the payment of applicable income and payroll withholding taxes.

SEC source: 0001127602-20-004738 · form4.xml · nonDerivative · entry 3

Kranich Robin B · CIK 0001308381 · EVP, Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,363

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.

F3 · 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 on February 6, 2018. This represents the 2020 installment

SEC source: 0001127602-20-004738 · form4.xml · nonDerivative · entry 2

Kranich Robin B · CIK 0001308381 · EVP, Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,141

F2 · shares: Represents shares withheld for the payment of applicable income and payroll withholding taxes.

SEC source: 0001127602-20-004738 · form4.xml · nonDerivative · entry 1

Kranich Robin B · CIK 0001308381 · EVP, Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,387

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 vesting of the first installment of the RSUs noted in footnote 4 on February 6, 2020. The RSUs convert into common stock on a one-for-one basis.

SEC source: 0001127602-20-004418 · form4.xml · derivative · entry 1

McVeigh David K · CIK 0001458011 · EVP, Global Business Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,484

Underlying: Common Stock · 15,484 shares

Expires 2027-02-05

F1 · shares: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

F1 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

SEC source: 0001127602-20-004397 · form4.xml · derivative · entry 1

Harris Michael P · CIK 0001757148 · EVP, Research & Advisory

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,658

Underlying: Common Stock · 11,658 shares

Expires 2027-02-05

F1 · shares: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

F1 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

SEC source: 0001127602-20-004427 · form4.xml · derivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,484

Underlying: Common Stock · 15,484 shares

Expires 2027-02-05

F1 · shares: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

F1 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

SEC source: 0001127602-20-004424 · form4.xml · derivative · entry 1

Dawkins Alwyn · CIK 0001439796 · EVP, Conferences

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,484

Underlying: Common Stock · 15,484 shares

Expires 2027-02-05

F1 · shares: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

F1 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

SEC source: 0001127602-20-004423 · form4.xml · derivative · entry 1

Kranich Robin B · CIK 0001308381 · EVP, Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,484

Underlying: Common Stock · 15,484 shares

Expires 2027-02-05

F1 · shares: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

F1 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

SEC source: 0001127602-20-004421 · form4.xml · derivative · entry 1

Beck Joseph P. · CIK 0001729479 · EVP, Global Technology Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,272

Underlying: Common Stock · 12,272 shares

Expires 2027-02-05

F1 · shares: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

F1 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

SEC source: 0001127602-20-004415 · form4.xml · derivative · entry 1

HALL EUGENE A · CIK 0001198849 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,264

Underlying: Common Stock · 89,264 shares

Expires 2027-02-05

F1 · shares: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

F1 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

SEC source: 0001127602-20-004414 · form4.xml · derivative · entry 1

Safian Craig · CIK 0001610073 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,657

Underlying: Common Stock · 25,657 shares

Expires 2027-02-05

F1 · shares: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

F1 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

SEC source: 0001127602-20-004408 · form4.xml · derivative · entry 1

Hensel Scott · CIK 0001674793 · EVP Consulting

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,340

Underlying: Common Stock · 15,340 shares

Expires 2027-02-05

F1 · shares: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

F1 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

SEC source: 0001127602-20-004401 · form4.xml · derivative · entry 1

Kaufman Jules · CIK 0001578939 · EVP, GC

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,340

Underlying: Common Stock · 15,340 shares

Expires 2027-02-05

F1 · shares: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

F1 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

SEC source: 0001127602-20-004391 · form4.xml · derivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,235

Underlying: Common Stock · 14,235 shares

Expires 2027-02-05

F1 · shares: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

F1 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

SEC source: 0001127602-20-004389 · form4.xml · derivative · entry 1

Allard Kenneth · CIK 0001774166 · SVP, New Market Programs

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,633

Underlying: Common Stock · 9,633 shares

Expires 2027-02-05

F1 · shares: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

F1 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 5, 2021.

SEC source: 0001127602-20-001227 · 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 · 124 shares

Expires not disclosed

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

F6 · 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.

F6 · 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: 0001127602-20-001227 · form4.xml · derivative · entry 5

GRABE WILLIAM O · CIK 0001185567 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,321

Underlying: Common Stock · 124 shares

Expires not disclosed

F6 · 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.

F6 · 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: 0001127602-20-001227 · form4.xml · nonDerivative · entry 1

GRABE WILLIAM O · CIK 0001185567 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129

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

F2 · balance_after: This balance reflects the number of shares directly held by the reporting person following share transfers relating to the 2017 GRAT, 2018 GRAT, and 2019 GRAT described in footnotes (3),(4), and (5) as well as the CSE distribution reported herein.

SEC source: 0001127602-20-001220 · form4.xml · derivative · entry 1

Bisson Peter · CIK 0001650029 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,806

Underlying: Common Stock · 108 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: 0001127602-20-001223 · form4.xml · derivative · entry 1

BRESSLER RICHARD J · CIK 0001200604 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,803

Underlying: Common Stock · 144 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: 0001127602-20-001217 · form4.xml · derivative · entry 1

DYKSTRA KAREN E · CIK 0001198848 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,503

Underlying: Common Stock · 60 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: 0001127602-20-001208 · 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 · 112 shares

Expires not disclosed

F2 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

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: 0001127602-20-001208 · form4.xml · derivative · entry 2

CESAN RAUL E · CIK 0001023201 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,175

Underlying: Common Stock · 112 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: 0001127602-20-001208 · form4.xml · nonDerivative · entry 1

CESAN RAUL E · CIK 0001023201 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 69,166

F2 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

SEC source: 0001127602-20-001214 · form4.xml · derivative · entry 1

Serra Eileen · CIK 0001721344 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,036

Underlying: Common Stock · 112 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: 0001127602-20-001195 · 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 · 74 shares

Expires not disclosed

F2 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

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: 0001127602-20-001195 · form4.xml · derivative · entry 2

FUCHS ANNE SUTHERLAND · CIK 0001246335 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,651

Underlying: Common Stock · 74 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: 0001127602-20-001195 · form4.xml · nonDerivative · entry 1

FUCHS ANNE SUTHERLAND · CIK 0001246335 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,193

F2 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

SEC source: 0001127602-20-001202 · 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 · 280 shares

Expires not disclosed

F2 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

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: 0001127602-20-001202 · form4.xml · derivative · entry 2

SMITH JAMES C · CIK 0001183693 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 280

Underlying: Common Stock · 280 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: 0001127602-20-001202 · form4.xml · nonDerivative · entry 1

SMITH JAMES C · CIK 0001183693 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 802,099

F2 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

SEC source: 0001127602-20-001189 · 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 · 96 shares

Expires not disclosed

F2 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

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: 0001127602-20-001189 · form4.xml · derivative · entry 2

PAGLIUCA STEPHEN G · CIK 0001240386 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,764

Underlying: Common Stock · 96 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: 0001127602-20-001189 · form4.xml · nonDerivative · entry 1

PAGLIUCA STEPHEN G · CIK 0001240386 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 60,230

F2 · kind: This reporting person has elected to receive an immediate distribution of the CSE shares.

SEC source: 0001127602-19-034113 · form4.xml · derivative · entry 3

Beck Joseph P. · CIK 0001729479 · EVP, Global Technology Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 413

Underlying: Common Stock · 207 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 · shares: Represents shares acquired upon release of RSUs which convert into common stock on a one-for-one basis.

F2 · derivative.exercise_date: These RSUs vest in four substantially equal annual installments, commencing on November 30, 2018. This represents the 2019 installment.

F2 · derivative.expiration_date: These RSUs vest in four substantially equal annual installments, commencing on November 30, 2018. This represents the 2019 installment.

SEC source: 0001127602-19-034113 · form4.xml · nonDerivative · entry 2

Beck Joseph P. · CIK 0001729479 · EVP, Global Technology Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,479

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

SEC source: 0001127602-19-034113 · form4.xml · nonDerivative · entry 1

Beck Joseph P. · CIK 0001729479 · EVP, Global Technology Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,571

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.

SEC source: 0001127602-19-034124 · form4.xml · nonDerivative · entry 1

Safian Craig · CIK 0001610073 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,566

F1 · shares: Represents shares acquired under Gartner, Inc.'s 2011 Employee Stock Purchase Plan in a transaction exempt from Section 16(b) pursuant to Rule 16b-3(c).

SEC source: 0001127602-19-034120 · form4.xml · nonDerivative · entry 1

Kranich Robin B · CIK 0001308381 · EVP, Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,410

F1 · shares: Represents shares acquired under Gartner, Inc.'s 2011 Employee Stock Purchase Plan in a transaction exempt from Section 16(b) pursuant to Rule 16b-3(c).

SEC source: 0001127602-19-034118 · form4.xml · nonDerivative · entry 1

HALL EUGENE A · CIK 0001198849 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,142,923

F1 · shares: Represents shares acquired under Gartner, Inc.'s 2011 Employee Stock Purchase Plan in a transaction exempt from Section 16(b) pursuant to Rule 16b-3(c).

SEC source: 0001127602-19-034119 · form4.xml · nonDerivative · entry 1

Kaufman Jules · CIK 0001578939 · EVP, GC

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,906

F1 · shares: Represents shares acquired under Gartner, Inc.'s 2011 Employee Stock Purchase Plan in a transaction exempt from Section 16(b) pursuant to Rule 16b-3(c).

SEC source: 0001127602-19-034115 · form4.xml · nonDerivative · entry 1

Dawkins Alwyn · CIK 0001439796 · EVP, Conferences

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,936

F1 · shares: Represents shares acquired under Gartner, Inc.'s 2011 Employee Stock Purchase Plan in a transaction exempt from Section 16(b) pursuant to Rule 16b-3(c).

SEC source: 0001127602-19-033815 · form4.xml · nonDerivative · entry 2

FUCHS ANNE SUTHERLAND · CIK 0001246335 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,119

F1 · price: This transaction was executed in multiple trades at prices ranging from $162.19 to $162.49. 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: 0001127602-19-033763 · form4.xml · nonDerivative · entry 1

Hensel Scott · CIK 0001674793 · EVP Consulting

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,132

F1 · price: This transaction was executed in multiple trades at prices ranging from $159.23 to $159.33. 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: 0001127602-19-033815 · form4.xml · nonDerivative · entry 1

FUCHS ANNE SUTHERLAND · CIK 0001246335 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,219

SEC source: 0001127602-19-033195 · form4.xml · nonDerivative · entry 1

FUCHS ANNE SUTHERLAND · CIK 0001246335 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,319

SEC source: 0001127602-19-033194 · form4.xml · nonDerivative · entry 1

Safian Craig · CIK 0001610073 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,548

F1 · price: This transaction was executed in multiple trades at prices ranging from $159.76 to $159.82. 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: 0001127602-19-033196 · form4.xml · derivative · entry 3

Hensel Scott · CIK 0001674793 · EVP Consulting

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,130

Underlying: Common Stock · 1,066 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: Represents shares acquired upon release of RSUs, which convert into common stock on a one-for-one basis.

F2 · derivative.exercise_date: These RSUs vest in four substantially equal annual installments, commencing on November 15, 2018. This represents the 2019 installment.

F2 · derivative.expiration_date: These RSUs vest in four substantially equal annual installments, commencing on November 15, 2018. This represents the 2019 installment.

SEC source: 0001127602-19-033196 · form4.xml · nonDerivative · entry 2

Hensel Scott · CIK 0001674793 · EVP Consulting

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,435

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