IT

SEC source: 0001127602-25-003973 · form4.xml · derivative · entry 8

Kranich Robin B · CIK 0001308381 · EVP & CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,239

Underlying: Common Stock · 5,239 shares

Expires 2032-02-06

F6 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 6, 2026.

SEC source: 0001127602-25-003973 · form4.xml · derivative · entry 7

Kranich Robin B · CIK 0001308381 · EVP & CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,030

Underlying: Common Stock · 5,030 shares

Expires not disclosed

F5 · derivative.exercise_date: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

F5 · derivative.expiration_date: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

SEC source: 0001127602-25-003971 · form4.xml · derivative · entry 4

Rupani Altaf · CIK 0001998915 · EVP, Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,454

Underlying: Common Stock · 2,454 shares

Expires 2032-02-06

F4 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 6, 2026.

SEC source: 0001127602-25-003971 · form4.xml · derivative · entry 3

Rupani Altaf · CIK 0001998915 · EVP, Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,074

Underlying: Common Stock · 2,074 shares

Expires not disclosed

F3 · derivative.exercise_date: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

F3 · derivative.expiration_date: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

SEC source: 0001127602-25-003970 · form4.xml · derivative · entry 8

Safian Craig · CIK 0001610073 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,530

Underlying: Common Stock · 8,530 shares

Expires 2032-02-06

F6 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 6, 2026.

SEC source: 0001127602-25-003970 · form4.xml · derivative · entry 7

Safian Craig · CIK 0001610073 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,232

Underlying: Common Stock · 8,232 shares

Expires not disclosed

F5 · derivative.exercise_date: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

F5 · derivative.expiration_date: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

SEC source: 0001127602-25-003969 · form4.xml · derivative · entry 8

Sribar Valentin · CIK 0001907594 · EVP, Research & Advisory

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,757

Underlying: Common Stock · 3,757 shares

Expires 2032-02-06

F6 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 6, 2026.

SEC source: 0001127602-25-003969 · form4.xml · derivative · entry 7

Sribar Valentin · CIK 0001907594 · EVP, Research & Advisory

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,400

Underlying: Common Stock · 3,400 shares

Expires not disclosed

F5 · derivative.exercise_date: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

F5 · derivative.expiration_date: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

SEC source: 0001127602-25-003967 · form4.xml · derivative · entry 8

HALL EUGENE A · CIK 0001198849 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,105

Underlying: Common Stock · 29,105 shares

Expires 2032-02-06

F6 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 6, 2026.

SEC source: 0001127602-25-003967 · form4.xml · derivative · entry 7

HALL EUGENE A · CIK 0001198849 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,313

Underlying: Common Stock · 28,313 shares

Expires not disclosed

F5 · derivative.exercise_date: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

F5 · derivative.expiration_date: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

SEC source: 0001127602-25-003968 · form4.xml · derivative · entry 7

van Ham Dick · CIK 0002054503 · SVP, Global Technology Sales

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,928

Underlying: Common Stock · 1,928 shares

Expires 2032-02-06

F5 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 6, 2026.

SEC source: 0001127602-25-003965 · form4.xml · derivative · entry 8

Genovese Yvonne · CIK 0001843710 · EVP, Global Product Management

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,757

Underlying: Common Stock · 3,757 shares

Expires 2032-02-06

F6 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 6, 2026.

SEC source: 0001127602-25-003965 · form4.xml · derivative · entry 7

Genovese Yvonne · CIK 0001843710 · EVP, Global Product Management

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,400

Underlying: Common Stock · 3,400 shares

Expires not disclosed

F5 · shares: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

F5 · derivative.exercise_date: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

F5 · derivative.expiration_date: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

SEC source: 0001127602-25-003963 · form4.xml · derivative · entry 8

Allard Kenneth · CIK 0001774166 · EVP, Digital Markets

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,377

Underlying: Common Stock · 4,377 shares

Expires 2032-02-06

F6 · derivative.exercise_date: These SARs become exercisable in four substantially equal annual installments, commencing on February 6, 2026.

SEC source: 0001127602-25-003963 · form4.xml · derivative · entry 7

Allard Kenneth · CIK 0001774166 · EVP, Digital Markets

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,244

Underlying: Common Stock · 4,244 shares

Expires not disclosed

F5 · derivative.exercise_date: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

F5 · derivative.expiration_date: These performance-based RSUs were awarded on February 8, 2024 and vest in four substantially equal annual installments, commencing on February 8, 2025. This represents the number of RSUs awarded after the performance metric was certified.

SEC source: 0001127602-25-000839 · form4.xml · derivative · entry 3

GRABE WILLIAM O · CIK 0001185567 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,197

Underlying: Common Stock · 56 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 Gartner, Inc. Long-Term Incentive Plan ("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 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000839 · form4.xml · derivative · entry 2

GRABE WILLIAM O · CIK 0001185567 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,253

Underlying: Common Stock · 56 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 Gartner, Inc. Long-Term Incentive Plan ("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 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000839 · form4.xml · nonDerivative · entry 1

GRABE WILLIAM O · CIK 0001185567 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 210

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

SEC source: 0001127602-25-000834 · form4.xml · derivative · entry 3

PAGLIUCA STEPHEN G · CIK 0001240386 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,668

Underlying: Common Stock · 47 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 Gartner, Inc. Long-Term Incentive Plan ("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 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000834 · form4.xml · derivative · entry 2

PAGLIUCA STEPHEN G · CIK 0001240386 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,715

Underlying: Common Stock · 47 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 Gartner, Inc. Long-Term Incentive Plan ("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 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000834 · form4.xml · nonDerivative · entry 1

PAGLIUCA STEPHEN G · CIK 0001240386 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,559

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

SEC source: 0001127602-25-000830 · form4.xml · derivative · entry 4

FUCHS ANNE SUTHERLAND · CIK 0001246335 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,577

Underlying: Common Stock · 32 shares

Expires not disclosed

F3 · 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

F3 · 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000830 · form4.xml · derivative · entry 3

FUCHS ANNE SUTHERLAND · CIK 0001246335 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,609

Underlying: Common Stock · 32 shares

Expires not disclosed

F3 · 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

F3 · 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000830 · form4.xml · nonDerivative · entry 1

FUCHS ANNE SUTHERLAND · CIK 0001246335 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,122

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

SEC source: 0001127602-25-000824 · form4.xml · derivative · entry 1

BRESSLER RICHARD J · CIK 0001200604 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,806

Underlying: Common Stock · 62 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 Gartner, Inc. Long-Term Incentive Plan ("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 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000820 · form4.xml · derivative · entry 1

Bisson Peter · CIK 0001650029 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,344

Underlying: Common Stock · 50 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 Gartner, Inc. Long-Term Incentive Plan ("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 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000816 · form4.xml · derivative · entry 5

CESAN RAUL E · CIK 0001023201 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,063

Underlying: Common Stock · 52 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 Gartner, Inc. Long-Term Incentive Plan ("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 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000816 · form4.xml · derivative · entry 4

CESAN RAUL E · CIK 0001023201 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,115

Underlying: Common Stock · 52 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 Gartner, Inc. Long-Term Incentive Plan ("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 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000816 · form4.xml · nonDerivative · entry 1

CESAN RAUL E · CIK 0001023201 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,402

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

SEC source: 0001127602-25-000812 · form4.xml · derivative · entry 1

Serra Eileen · CIK 0001721344 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,627

Underlying: Common Stock · 52 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 Gartner, Inc. Long-Term Incentive Plan ("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 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000809 · form4.xml · derivative · entry 3

FERGUSON DIANA SUE · CIK 0001275975 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81

Underlying: Common Stock · 54 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 Gartner, Inc. Long-Term Incentive Plan ("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 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000809 · form4.xml · derivative · entry 2

FERGUSON DIANA SUE · CIK 0001275975 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 135

Underlying: Common Stock · 54 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 Gartner, Inc. Long-Term Incentive Plan ("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 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000809 · form4.xml · nonDerivative · entry 1

FERGUSON DIANA SUE · CIK 0001275975 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,107

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

SEC source: 0001127602-25-000803 · form4.xml · derivative · entry 3

GUTIERREZ JOSE M · CIK 0001257702 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 226

Underlying: Common Stock · 27 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 Gartner, Inc. Long-Term Incentive Plan ("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 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000803 · form4.xml · derivative · entry 2

GUTIERREZ JOSE M · CIK 0001257702 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 253

Underlying: Common Stock · 27 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 Gartner, Inc. Long-Term Incentive Plan ("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 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-25-000803 · form4.xml · nonDerivative · entry 1

GUTIERREZ JOSE M · CIK 0001257702 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,044

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

SEC source: 0001127602-25-000798 · form4.xml · derivative · entry 1

DYKSTRA KAREN E · CIK 0001198848 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 148

Underlying: Common Stock · 38 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 Gartner, Inc. Long-Term Incentive Plan ("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 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 Gartner, Inc. Long-Term Incentive Plan ("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 LTIP.

SEC source: 0001127602-24-029356 · form4.xml · nonDerivative · entry 1

Genovese Yvonne · CIK 0001843710 · EVP, Global Product Management

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,959

SEC source: 0001127602-24-029142 · form4.xml · nonDerivative · entry 1

GRABE WILLIAM O · CIK 0001185567 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 154

F1 · shares: On December 9, 2024, the reporting person donated 966 shares to a donor-advised fund.

SEC source: 0001127602-24-028969 · form4.xml · nonDerivative · entry 1

Wartinbee William James III · CIK 0001964065 · EVP, Global Sales Strat & Ops

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,311

SEC source: 0001127602-24-028435 · form4.xml · nonDerivative · entry 1

Sribar Valentin · CIK 0001907594 · EVP, Research & Advisory

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,835

F1 · shares: Represents shares acquired under Gartner, Inc.'s 2011 Employee Stock Purchase Plan (as amended and restated effective May 1, 2024) in a transaction exempt from Section 16(b) pursuant to Rule 16b-3(c).

SEC source: 0001127602-24-028431 · form4.xml · nonDerivative · entry 1

Safian Craig · CIK 0001610073 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,007

F1 · shares: Represents shares acquired under Gartner, Inc.'s 2011 Employee Stock Purchase Plan (as amended and restated effective May 1, 2024) in a transaction exempt from Section 16(b) pursuant to Rule 16b-3(c).

SEC source: 0001127602-24-028425 · form4.xml · nonDerivative · entry 1

HALL EUGENE A · CIK 0001198849 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,143,247

F1 · shares: Represents shares acquired under Gartner, Inc.'s 2011 Employee Stock Purchase Plan (as amended and restated effective May 1, 2024) in a transaction exempt from Section 16(b) pursuant to Rule 16b-3(c).

SEC source: 0001127602-24-028429 · form4.xml · nonDerivative · entry 1

Dawkins Alwyn · CIK 0001439796 · EVP, Global Business Sales

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,674

F1 · shares: Represents shares acquired under Gartner, Inc.'s 2011 Employee Stock Purchase Plan (as amended and restated effective May 1, 2024) in a transaction exempt from Section 16(b) pursuant to Rule 16b-3(c).

SEC source: 0001127602-24-028421 · form4.xml · nonDerivative · entry 1

Kranich Robin B · CIK 0001308381 · EVP & CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,412

F1 · shares: Represents shares acquired under Gartner, Inc.'s 2011 Employee Stock Purchase Plan (as amended and restated effective May 1, 2024) in a transaction exempt from Section 16(b) pursuant to Rule 16b-3(c).

SEC source: 0001127602-24-028309 · form4.xml · nonDerivative · entry 2

Herkes Claire · CIK 0001843712 · EVP, Conferences

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,494

SEC source: 0001127602-24-028309 · form4.xml · nonDerivative · entry 1

Herkes Claire · CIK 0001843712 · EVP, Conferences

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,705

SEC source: 0001127602-24-028177 · form4.xml · nonDerivative · entry 6

SMITH JAMES C · CIK 0001183693 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 509,457

F6 · price: This transaction was executed in multiple trades at prices ranging from $526.92 to $527.84. 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: 0001127602-24-028177 · form4.xml · nonDerivative · entry 5

SMITH JAMES C · CIK 0001183693 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 509,831

F5 · price: This transaction was executed in multiple trades at prices ranging from $525.91 to $526.89. 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: 0001127602-24-028177 · form4.xml · nonDerivative · entry 4

SMITH JAMES C · CIK 0001183693 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 510,469

F4 · price: This transaction was executed in multiple trades at prices ranging from $524.89 to $525.59. 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.