0000749251-26-000167 | 10-Q | XBRL Viewer

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Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Mar. 31, 2026
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Divestiture	3 Months Ended
Divestiture	Mar. 31, 2026
Discontinued Operations and Disposal Groups [Abstract]
Divestiture	Divestiture In February 2026, the Company completed the sale of its Digital Markets business, for approximately $104.8 million net of cash transferred, subject to post-close adjustments. The Company recorded a pre-tax gain of $6.1 million on the sale, which is included in Gain from sale of divested operation in the Consolidated Statement of Operations during the three months ended March 31, 2026. The Digital Markets business was included in the Company’s Other segment.

Segment Information

3 Months Ended

Mar. 31, 2026

Segment Reporting [Abstract]

Segment Information

The Company’s products and services are delivered through three reportable segments – Business and Technology Insights, or “Insights”, Conferences and Consulting, as described below.

•Insights equips executives and their teams from every function and across all industries with actionable, objective business and technology insights, guidance and tools. Our experienced experts deliver all this value informed by an unmatched combination of practitioner-sourced and data-driven research to help our clients address their mission critical priorities.

•Conferences provides executives and teams across an organization the opportunity to learn, share and network. From industry-leading conferences to peer-driven communities – each focused on the mission-critical priorities of specific business roles – our offerings enable attendees to experience the best of Gartner insights and guidance.

•Consulting serves senior executives leading technology-driven strategic initiatives leveraging the power of Gartner’s actionable, objective insights. Through custom analysis and on-the-ground support we enable optimized technology investments and stronger performance on our clients’ mission critical priorities.

The Company's Chief Executive Officer is its chief operating decision maker (CODM). The CODM evaluates segment performance and allocates resources based on gross contribution. Gross contribution, as presented in the tables below, is defined as operating income or loss excluding certain Cost of services and product development expenses, Selling, general and administrative expenses, Depreciation, Amortization of intangibles and Gain from sale of divested operation. Certain bonus and fringe benefit costs included in consolidated Cost of services and product development are not allocated to segment expense. The CODM uses gross contribution to allocate resources (including financial resources and employees) for each segment primarily in the Company's annual budgeting process. The CODM then monitors budgeted versus actual results regularly to assess segment operating performance, identify business trends, and modify resource allocations as needed. The accounting policies used by the reportable segments are the same as those used by the Company. There are no intersegment revenues. The Company does not identify or allocate assets, including capital expenditures, by reportable segment. Accordingly, assets are not reported by segment because the information is not available by segment and is not reviewed in the evaluation of segment performance or in making decisions regarding the allocation of resources.

The tables below present information about the Company’s reportable segments for the periods indicated (in thousands).


Three Months Ended March 31, 2026	Insights		Conferences		Consulting		Other (1)		Consolidated
Revenues	$	1,294,195	$	78,325	$	119,129	$	19,392	$	1,511,041
Less:
Personnel expenses	271,957		18,031		75,617		2,210		367,815
Product and content delivery expenses	3,630		26,756		2,939		9,475		42,800
Other expenses (2)	7,091		3,130		3,768		130		14,119
Gross contribution	1,011,517		30,408		36,805		7,577		1,086,307
Cost of services and product development - unallocated (3)									4,573
Selling, general and administrative									726,349
Depreciation and amortization									45,431


Gain from sale of divested operation									(6,138)
Interest expenses and other, net									23,680
Income before income taxes									$	292,412


Three Months Ended March 31, 2025	Insights		Conferences		Consulting		Other (1)		Consolidated
Revenues	$	1,255,569	$	72,597	$	139,706	$	66,258	$	1,534,130
Less:
Personnel expenses	278,990		17,746		79,092		10,371		386,199
Product and content delivery expenses	4,396		24,172		3,263		36,781		68,612
Other expenses (2)	6,236		3,297		3,959		530		14,022
Gross contribution	965,947		27,382		53,392		18,576		1,065,297
Cost of services and product development - unallocated (3)									6,197
Selling, general and administrative									730,308
Depreciation and amortization									50,760


Interest expenses and other, net									11,024

Income before income taxes									$	267,008

(1)Other includes the Company's Digital Markets operating segment, which was divested during the three months ended March 31, 2026. See Note 2 — Divestiture for additional information.

(2)Other expenses consists primarily of travel and entertainment and workplace expenses.

(3)The unallocated amounts consist of certain bonus and fringe costs recorded in consolidated Cost of services and product development that are not allocated to segment expense. The Company’s policy is to allocate bonuses to segments at 100% of a segment employee’s target bonus. Amounts above or below 100% are absorbed by corporate.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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+ Details

Derivatives and Hedging - Schedule of Outstanding Derivatives Contracts (Details) - Foreign currency forwards - Not Designated as Hedging Instrument - Other current assets/accrued liabilities $ in Thousands	Mar. 31, 2026 USD ($) contract	Dec. 31, 2025 USD ($) contract
Derivatives, Fair Value [Line Items]
Number of Contracts \| contract	28	104
Notional Amounts	$ 110,353	$ 427,482
Fair Value Asset (Liability), Net	$ 1	$ 230

- Definition

The number of derivative instruments of a particular group held by the entity.

+ References + Details

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Operating activities:
Net income	$ 222,344	$ 210,939
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	45,431	50,760
Stock-based compensation expense	45,870	50,168
Deferred taxes	1,991	(29,710)
Gain from sale of divested operation	(6,138)	0
Reduction in the carrying amount of operating lease right-of-use assets	14,894	17,736
Amortization and write-off of deferred financing fees	1,298	1,034
Gain on de-designated swaps	0	(165)
Changes in assets and liabilities, net of acquisitions and divestitures:
Fees receivable, net	270,936	211,612
Deferred commissions	21,265	41,131
Prepaid expenses and other current assets	(38,527)	(5,338)
Other assets	(7,930)	(15,568)
Deferred revenues	213,649	131,001
Accounts payable and accrued and other liabilities	(394,044)	(350,088)
Cash provided by operating activities	391,039	313,512
Investing activities:
Additions to property, equipment and leasehold improvements	(20,423)	(25,569)
Proceeds from sale of divested operation, net of cash transferred	104,798	0
Cash provided by (used in) investing activities	84,375	(25,569)
Financing activities:
Proceeds from employee stock purchase plan	8,661	9,736
Payments of deferred financing fees	(1,508)	0
Purchases of treasury stock	(534,637)	(162,672)
Cash used in financing activities	(527,484)	(152,936)
Net (decrease) increase in cash and cash equivalents	(52,070)	135,007
Effects of exchange rates on cash and cash equivalents	(3,505)	22,894
Cash and cash equivalents, beginning of period	1,722,521	1,933,147
Cash and cash equivalents, end of period	$ 1,666,946	$ 2,091,048

Debt

3 Months Ended

Mar. 31, 2026

Debt Disclosure [Abstract]

Debt

The Company’s total outstanding borrowings are summarized in the table below (in thousands).


	March 31,		December 31,
Description	2026		2025
2024 Credit Agreement - Revolving credit facility (1)	$	—	$	—
4.50% Senior Notes due 2028 (“2028 Notes”)	800,000		800,000
3.63% Senior Notes due 2029 (“2029 Notes”)	600,000		600,000
3.75% Senior Notes due 2030 (“2030 Notes”)	800,000		800,000
4.95% Senior Notes due 2031 (“2031 Notes”)	350,000		350,000
5.60% Senior Notes due 2035 (“2035 Notes”)	450,000		450,000
Other (2)	5,000		5,000
Principal amount outstanding (3)	3,005,000		3,005,000
Less: Deferred financing fees and unamortized discounts (4)	(22,029)		(23,326)
Net balance sheet carrying amount	$	2,982,971	$	2,981,674

(1)The Company had approximately $1.0 billion of available borrowing capacity on the 2024 Credit Agreement revolver (not including the expansion feature) as of March 31, 2026.

(2)Consists of a State of Connecticut economic development loan originated in 2019 with a 10-year maturity and bears interest at a fixed rate of 1.75%. The Company repaid the loan in April 2026.

(3)The weighted average annual effective rate on the Company’s outstanding debt for the three months ended March 31, 2026, was 4.34%.

(4)Deferred financing fees and unamortized discounts are being amortized to Interest expense, net over the term of the related debt obligation.

2024 Credit Agreement

On March 26, 2024, the Company entered into a Credit Agreement (the “2024 Credit Agreement”) among the Company, as borrower, the lenders party thereto and JPMorgan Chase Bank, N.A., as administrative agent (the “Administrative Agent”).

The 2024 Credit Agreement provides for a $1.0 billion senior unsecured five-year revolving facility. The facility may be increased, at the Company’s option and under certain conditions, by up to an additional $750 million in the aggregate. The facility may be used for revolving loans, and up to $75.0 million may be used for letters of credit. The revolving loans may be borrowed, repaid and re-borrowed until March 26, 2029, at which time all amounts borrowed must be repaid, subject to customary extension mechanics. The 2024 Credit Agreement contains certain customary restrictive loan covenants, including, among others, a financial covenant requiring a maximum leverage ratio and covenants limiting the Company’s ability to grant liens, make acquisitions, be acquired and the ability of the Company’s subsidiaries to incur indebtedness. The Company was in compliance with all financial covenants as of March 31, 2026.

Interest under the revolving facility accrues, at a variable rate, based on, at our option, (i) the Secured Overnight Funding Rate (“SOFR”) plus a credit spread adjustment of 0.10% or (ii) an alternate base rate (“Base Rate”) plus, in each case, an applicable margin, and is payable monthly. The applicable margin ranges between 1.125% and 1.75%, depending on the lower rate determined by either the Company’s leverage ratio or the credit rating of the Company’s senior unsecured debt. At March 31, 2026, the applicable all-in margin on the revolving facility was 1.48% (including the credit spread adjustment). The contractual annualized interest rate as of March 31, 2026 on the 2024 Credit Agreement was 5.23%, which consisted of Term Secured Overnight Financing Rate (“SOFR”) of 3.75% plus a margin of 1.48%. The commitment fee payable on the unused portion of the facility is equal to between 0.125% and 0.25% based on utilization of the facility. The Company has also agreed to pay customary letter of credit fees.

2031 and 2035 Notes

On November 20, 2025, the Company completed the public offering and issuance of $350.0 million aggregate principal amount of its 4.950% Senior Notes due 2031 and $450.0 million aggregate principal amount of its 5.600% Senior Notes due 2035 (together, the “Notes”). The 2031 Notes were issued at an issue price of 99.970% and the 2035 Notes were issued at an issue price of 99.992%. The Notes were offered and sold pursuant to Gartner’s automatic shelf registration statement on Form S-3 (File No. 333-291447) and the prospectus included therein, filed with the Securities and Exchange Commission on November 12, 2025, and supplemented by the prospectus supplement dated November 13, 2025.

The Company received approximately $799.9 million in net proceeds, after discounts and before underwriting fees and offering expenses, from the sale of the Notes. The Company used a portion of the net proceeds from the offering of the notes to repay the $274.4 million then outstanding under the 2024 Credit Agreement and to pay related fees and expenses, with remaining amounts to be used for general corporate purposes, which may include, without limitation, potential repurchases of its common stock.

2029 Notes

On June 18, 2021, the Company issued $600.0 million aggregate principal amount of 3.625% Senior Notes due 2029. The 2029 Notes were issued at an issue price of 100.0% and bear interest at a rate of 3.625% per annum. Interest on the 2029 Notes is payable on June 15 and December 15 of each year, beginning on December 15, 2021. The 2029 Notes will mature on June 15, 2029. The Company may redeem some or all of the 2029 Notes at any time on or after June 15, 2024 for cash at the redemption prices set forth in the 2029 Notes Indenture, plus accrued and unpaid interest to, but excluding, the redemption date.

2030 Notes

On September 28, 2020, the Company issued $800.0 million aggregate principal amount of 3.75% Senior Notes due 2030. The 2030 Notes were issued at an issue price of 100.0% and bear interest at a rate of 3.75% per annum. Interest on the 2030 Notes is payable on April 1 and October 1 of each year, beginning on April 1, 2021. The 2030 Notes will mature on October 1, 2030.

The Company may redeem some or all of the 2030 Notes at any time on or after October 1, 2025 for cash at the redemption prices set forth in the 2030 Note Indenture, plus accrued and unpaid interest to, but excluding, the redemption date. Prior to October 1, 2025, the Company may redeem up to 40% of the aggregate principal amount of the 2030 Notes in connection with certain equity offerings, or some or all of the 2030 Notes with a “make-whole” premium, in each case subject to the terms set forth in the 2030 Note Indenture.

2028 Notes

On June 22, 2020, the Company issued $800.0 million aggregate principal amount of 4.50% Senior Notes due 2028. The 2028 Notes were issued at an issue price of 100.0% and bear interest at a rate of 4.50% per annum. Interest on the 2028 Notes is payable on January 1 and July 1 of each year, beginning on January 1, 2021. The 2028 Notes will mature on July 1, 2028.

The Company may redeem some or all of the 2028 Notes at any time on or after July 1, 2023 for cash at the redemption prices set forth in the 2028 Note Indenture, plus accrued and unpaid interest to, but excluding, the redemption date.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
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Reference 18: http://www.xbrl.org/2003/role/disclosureRef
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Reference 19: http://www.xbrl.org/2003/role/disclosureRef
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Reference 20: http://www.xbrl.org/2003/role/disclosureRef
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Reference 21: http://www.xbrl.org/2003/role/disclosureRef
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Reference 23: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Revenue and Related Matters - Schedule of Revenue Remaining Performance Obligation (Details) $ in Billions	Mar. 31, 2026 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, amount	$ 6.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, amount	$ 3.2
Revenue, remaining performance obligation, expected timing of satisfaction, period	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, amount	$ 2.6
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, amount	$ 0.8
Revenue, remaining performance obligation, expected timing of satisfaction, period

Equity

3 Months Ended

Mar. 31, 2026

Stockholders' Equity Note [Abstract]

Equity

Share Repurchase Authorization

In 2015, the Company’s Board of Directors (the “Board”) authorized a share repurchase program to repurchase up to $1.2 billion of the Company’s common stock. The Board authorized incremental share repurchases of up to an aggregate additional $6.3 billion of the Company’s common stock from February 2021 to January 2026. As of March 31, 2026, $0.7 billion remained available under the share repurchase program. The Company may repurchase its common stock from time-to-time in amounts, at prices and in the manner that the Company deems appropriate, subject to the availability of stock, prevailing market conditions, the trading price of the stock, the Company’s financial performance and other conditions. Repurchases may be made through open market purchases (which may include repurchase plans designed to comply with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended), accelerated share repurchases, private transactions or other transactions and will be funded by cash on hand and borrowings. Repurchases may also be made from time-to-time in connection with the settlement of the Company’s stock-based compensation awards.

The Company’s share repurchase activity is presented in the table below for the periods indicated.


	Three Months Ended
	March 31,
	2026		2025
Number of shares repurchased (1)	3,310,253		300,745
Cash paid for repurchased shares (in thousands) (2)	$	534,637	$	162,672

(1)The average purchase price for repurchased shares was $158.49 and $507.65 for the three months ended March 31, 2026 and 2025, respectively. The repurchased shares during the three months ended March 31, 2026 and 2025 included purchases for both open market purchases and stock-based compensation award settlements.

(2)The cash paid for repurchased shares during the three months ended March 31, 2026 excluded excise tax accrued and included $10.0 million of open market purchases with trade dates in December 2025 that settled in January 2026. The cash paid for repurchased shares during the three months ended March 31, 2025 included $10.0 million of open market purchases with trade dates in December 2024 that settled in January 2025.

Accumulated Other Comprehensive Loss, net (“AOCL”)

The tables below provide information about the changes in AOCL by component and the related amounts reclassified out of AOCL to income during the periods indicated (net of tax, in thousands) (1).

Three Months Ended March 31, 2026


	Defined Benefit Pension Plans		Foreign Currency Translation Adjustments		Total
Balance – December 31, 2025	$	(5,944)	$	(35,071)	$	(41,015)
Other comprehensive income (loss) activity during the period:
Change in AOCL before reclassifications to income	(397)		(3,853)		(4,250)
Reclassifications from AOCL to income (2)	210		—		210
Other comprehensive income (loss), net	(187)		(3,853)		(4,040)
Balance – March 31, 2026	$	(6,131)	$	(38,924)	$	(45,055)

Three Months Ended March 31, 2025


	Interest Rate Swaps		Defined Benefit Pension Plans		Foreign Currency Translation Adjustments		Total
Balance – December 31, 2024	$	(9,800)	$	(5,214)	$	(73,319)	$	(88,333)
Other comprehensive income (loss) activity during the period:
Change in AOCL before reclassifications to income	—		—		17,046		17,046
Reclassifications from AOCL to income (2), (3)	3,390		48		—		3,438
Other comprehensive income (loss), net	3,390		48		17,046		20,484
Balance – March 31, 2025	$	(6,410)	$	(5,166)	$	(56,273)	$	(67,849)

(1)Amounts in parentheses represent debits (deferred losses).

(2)The reclassifications related to defined benefit pension plans were recorded in Other (expense) income, net.

(3)$4.5 million of the reclassifications related to interest rate swaps (cash flow hedges) were recorded in Interest expense, net, for the three months ended March 31, 2025. The swap contract matured in September 2025.

- Definition

The entire disclosure for equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-8A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147481112/505-10-50-14

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147477968/946-235-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147478448/946-505-50-6

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
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-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-6

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-Name Accounting Standards Codification
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-URI https://asc.fasb.org/505/tableOfContent

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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-Section 50
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-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147481112/505-10-50-14

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
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Reference 16: http://www.xbrl.org/2003/role/disclosureRef
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Reference 18: http://www.xbrl.org/2003/role/disclosureRef
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Reference 19: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

+ Details

Business and Basis of Presentation (Details)	3 Months Ended
Business and Basis of Presentation (Details)	Mar. 31, 2026 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments	3

Goodwill and Intangible Assets - Schedule of Carrying Amounts of Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Finite-lived Intangible Assets [Roll Forward]
Gross cost, beginning balance		$ 1,031,957
Foreign currency translation impact	$ (1,623)
Gross cost	1,030,334
Accumulated amortization	(714,580)	(695,654)
Finite-lived intangible assets, net	315,754	336,303
Customer Relationships
Finite-lived Intangible Assets [Roll Forward]
Gross cost, beginning balance		1,021,757
Foreign currency translation impact	(1,623)
Gross cost	1,020,134
Accumulated amortization	(706,106)	(687,416)
Finite-lived intangible assets, net	$ 314,028	$ 334,341
Customer Relationships \| Minimum
Finite-lived Intangible Assets [Roll Forward]
Remaining amortization period	6 years	6 years
Customer Relationships \| Maximum
Finite-lived Intangible Assets [Roll Forward]
Remaining amortization period	13 years	13 years
Other
Finite-lived Intangible Assets [Roll Forward]
Gross cost, beginning balance		$ 10,200
Foreign currency translation impact	$ 0
Gross cost	10,200
Accumulated amortization	(8,474)	(8,238)
Finite-lived intangible assets, net	$ 1,726	$ 1,962
Other \| Maximum
Finite-lived Intangible Assets [Roll Forward]
Remaining amortization period	11 years	11 years

Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2026

Share-Based Payment Arrangement [Abstract]

Schedule of Stock-based Compensation Expense by Award Type

The tables below summarize the Company’s stock-based compensation expense by award type and expense category line item during the periods indicated (in millions).


	Three Months Ended
	March 31,
Award type	2026		2025
Stock appreciation rights	$	3.1	$	3.4
Restricted stock units	42.5		46.6
Common stock equivalents	0.3		0.2
Total (1)	$	45.9	$	50.2

Schedule of Stock-based Compensation Expense by Expense Category


	Three Months Ended
	March 31,
Expense category line item	2026		2025
Cost of services and product development	$	16.8	$	20.6
Selling, general and administrative	29.1		29.6
Total (1)	$	45.9	$	50.2

(1)Includes costs of $23.5 million and $28.0 million during the three months ended March 31, 2026 and 2025, respectively, for awards to retirement-eligible employees. Those awards are expensed on an accelerated basis.

Condensed Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Statement of Financial Position [Abstract]
Fees receivable, allowance	$ 5,000	$ 5,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.0005	$ 0.0005
Common stock, shares authorized (in shares)	250,000,000	250,000,000
Common stock, shares issued (in shares)	163,602,067	163,602,067
Treasury stock, common shares (in shares)	95,724,933	92,752,769

Computation of Earnings Per Share

3 Months Ended

Mar. 31, 2026

Earnings Per Share [Abstract]

Computation of Earnings Per Share

Basic earnings per share (“EPS”) is computed by dividing net income by the weighted average number of shares of Common Stock outstanding during the period. Diluted EPS reflects the potential dilution of securities that could share in earnings. Potential shares of common stock are excluded from the computation of diluted earnings per share when their effect would be anti-dilutive.

The table below sets forth the calculation of basic and diluted income per share for the periods indicated (in thousands, except per share data).


	Three Months Ended
	March 31,
	2026		2025
Numerator:
Net income used for calculating basic and diluted income per share	$	222,344	$	210,939
Denominator:
Weighted average common shares used in the calculation of basic income per share	69,796		77,357
Dilutive effect of outstanding awards associated with stock-based compensation plans (1)	169		433
Shares used in the calculation of diluted income per share	69,965		77,790
Basic income per share	$	3.19	$	2.73
Diluted income per share	$	3.18	$	2.71

(1)Certain outstanding awards associated with stock-based compensation plans were not included in the computation of diluted income per share because the effect would have been anti-dilutive. These anti-dilutive outstanding awards associated with stock-based compensation plans was 0.8 million and 0.2 million for the three months ended March 31, 2026 and March 31, 2025, respectively.

Goodwill and Intangible Assets

3 Months Ended

Mar. 31, 2026

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill

Goodwill represents the excess of the purchase price of acquired businesses over the estimated fair values of the tangible and identifiable intangible net assets acquired. Evaluations of the recoverability of goodwill are performed in accordance with FASB ASC Topic 350, which requires an annual assessment of potential goodwill impairment at the reporting unit level and whenever events or changes in circumstances indicate that the carrying value of goodwill may not be recoverable.

When performing the annual assessment of the recoverability of goodwill, the Company initially performs a qualitative analysis evaluating whether any events or circumstances occurred or exist that provide evidence that it is more likely than not that the fair value of any of the Company’s reporting units is less than the related carrying amount. If the Company does not believe that it is more likely than not that the fair value of any of the Company’s reporting units is less than the related carrying amount, then no quantitative impairment test is performed. However, if the results of the qualitative assessment indicate that it is more likely than not that the fair value of a reporting unit is less than its respective carrying amount, then a quantitative impairment

test is performed. Evaluating the recoverability of goodwill requires judgments and assumptions regarding future trends and events. As a result, both the precision and reliability of the estimates are subject to uncertainty.

The Company’s most recent annual impairment test of goodwill was a quantitative analysis conducted during the quarter ended September 30, 2025 that indicated an impairment of the Company’s Digital Markets reporting unit. During the three months ended September 30, 2025, ongoing weakness in the market as well as changes in the Company’s internal organization structure prompted a revision to the long-term earnings forecast for the Digital Markets business. During the three months ended September 30, 2025, a goodwill impairment loss of $150.0 million was recognized in the Digital Markets reporting unit. Subsequent to completing the 2025 annual impairment test, there were no events or changes in circumstances noted that required an interim impairment test.

The table below presents changes to the carrying amount of goodwill by segment during the three months ended March 31, 2026 (in thousands).


	Insights		Conferences		Consulting		Total
Balance at December 31, 2025	$	2,460,315	$	184,052	$	96,435	$	2,740,802



Foreign currency translation impact	(447)		(10)		(81)		(538)
Balance at March 31, 2026	$	2,459,868	$	184,042	$	96,354	$	2,740,264

Finite-Lived Intangible Assets

The tables below present reconciliations of the carrying amounts of the Company’s finite-lived intangible assets as of the dates indicated (in thousands).


March 31, 2026	Customer Relationships		Other		Total
Gross cost at December 31, 2025	$	1,021,757	$	10,200	$	1,031,957



Foreign currency translation impact	(1,623)		—		(1,623)
Gross cost	1,020,134		10,200		1,030,334
Accumulated amortization (1)	(706,106)		(8,474)		(714,580)
Balance at March 31, 2026	$	314,028	$	1,726	$	315,754


December 31, 2025	Customer Relationships		Other		Total
Gross cost	$	1,021,757	$	10,200	$	1,031,957
Accumulated amortization (1)	(687,416)		(8,238)		(695,654)
Balance at December 31, 2025	$	334,341	$	1,962	$	336,303

(1) Finite-lived intangible assets are amortized using the straight-line method over the following periods: Customer relationships—6 to 13 years and Other—11 years.

Amortization expense related to finite-lived intangible assets was $20.1 million and $21.9 million during the three months ended March 31, 2026 and 2025, respectively. The estimated future amortization expense by year for finite-lived intangible assets is presented in the table below (in thousands).


2026 (remaining nine months)	$	60,052
2027	79,460
2028	77,989
2029	77,910
2030	20,343
	$	315,754

Derivatives and Hedging

3 Months Ended

Mar. 31, 2026

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Hedging

The Company enters into a limited number of derivative contracts to mitigate the cash flow risk associated with changes in interest rates on variable-rate debt and changes in foreign exchange rates on forecasted foreign currency transactions. The Company accounts for its outstanding derivative contracts in accordance with FASB ASC Topic 815, which requires all derivatives, including derivatives designated as accounting hedges, to be recorded on the balance sheet at fair value. The tables below provide information regarding the Company’s outstanding derivative contracts as of the dates indicated (in thousands, except for number of contracts).

March 31, 2026

Derivative Contract Type

Number of
Contracts

Notional
Amounts

Fair Value
Asset
(Liability), Net (2)

Balance
Sheet
Line Item

Foreign currency forwards (1)

110,353

Other current assets/accrued liabilities

December 31, 2025

Derivative Contract Type

Number of Contracts

Notional
Amounts

Fair Value
Asset
(Liability), Net (2)

Balance
Sheet
Line Item

Foreign currency forwards (1)

104

427,482

230

Other current assets/accrued liabilities

(1)The Company has foreign exchange transaction risk because it typically enters into transactions in the normal course of business that are denominated in foreign currencies that differ from the local functional currency. The Company enters into short-term foreign currency forward exchange contracts to mitigate the cash flow risk associated with changes in foreign currency rates on forecasted foreign currency transactions. These contracts are accounted for at fair value with realized and unrealized gains and losses recognized in Other (expense) income, net because the Company does not designate these contracts as hedges for accounting purposes. All of the outstanding foreign currency forward exchange contracts at March 31, 2026 matured before April 28, 2026.

(2)See Note 12 — Fair Value Disclosures for the determination of the fair values of these instruments.

At March 31, 2026, all of the Company’s derivative counterparties were investment grade financial institutions. The Company did not have any collateral arrangements with its derivative counterparties and none of the derivative contracts contained credit-risk related contingent features. The table below provides information regarding amounts recognized in the accompanying Condensed Consolidated Statements of Operations for derivative contracts for the periods indicated (in thousands).


	Three Months Ended
	March 31,
Amount recorded in:	2026		2025
Interest expense, net (1)	$	—	$	4,464
Other expense (income), net (2)	1,218		(596)
Total expense, net	$	1,218	$	3,868

(1)Consists of interest expense from interest rate swap contracts.

(2)Consists of net realized and unrealized gains and losses on foreign currency forward contracts and in 2025 also included a gain on a de-designated interest rate swap.

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 182
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-182

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+ Details

Computation of Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2026

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Earnings Per Share Calculations

The table below sets forth the calculation of basic and diluted income per share for the periods indicated (in thousands, except per share data).


	Three Months Ended
	March 31,
	2026		2025
Numerator:
Net income used for calculating basic and diluted income per share	$	222,344	$	210,939
Denominator:
Weighted average common shares used in the calculation of basic income per share	69,796		77,357
Dilutive effect of outstanding awards associated with stock-based compensation plans (1)	169		433
Shares used in the calculation of diluted income per share	69,965		77,790
Basic income per share	$	3.19	$	2.73
Diluted income per share	$	3.18	$	2.71

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Revenues:
Total revenues	$ 1,511,041	$ 1,534,130
Costs and expenses:
Cost of services and product development	429,307	475,030
Selling, general and administrative	726,349	730,308
Depreciation	25,365	28,866
Amortization of intangibles	20,066	21,894
Gain from sale of divested operation	(6,138)	0
Total costs and expenses	1,194,949	1,256,098
Operating income	316,092	278,032
Interest expense, net	(21,048)	(13,413)
Other (expense) income, net	(2,632)	2,389
Income before income taxes	292,412	267,008
Provision for income taxes	70,068	56,069
Net income	$ 222,344	$ 210,939
Net income per share:
Basic (in dollars per share)	$ 3.19	$ 2.73
Diluted (in dollars per share)	$ 3.18	$ 2.71
Weighted average shares outstanding:
Basic (in shares)	69,796	77,357
Diluted (in shares)	69,965	77,790
Insights
Revenues:
Total revenues	$ 1,294,195	$ 1,255,569
Conferences
Revenues:
Total revenues	78,325	72,597
Consulting
Revenues:
Total revenues	119,129	139,706
Other
Revenues:
Total revenues	$ 19,392	$ 66,258

Goodwill and Intangible Assets - Schedule of Changes to the Carrying Amount of Goodwill by Segment (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2026 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 2,740,802
Foreign currency translation impact	(538)
Ending balance	2,740,264
Insights
Goodwill [Roll Forward]
Beginning balance	2,460,315
Foreign currency translation impact	(447)
Ending balance	2,459,868
Conferences
Goodwill [Roll Forward]
Beginning balance	184,052
Foreign currency translation impact	(10)
Ending balance	184,042
Consulting
Goodwill [Roll Forward]
Beginning balance	96,435
Foreign currency translation impact	(81)
Ending balance	$ 96,354

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details

Subsequent Event (Details) - USD ($) $ in Millions	Apr. 30, 2026	Mar. 31, 2026	Jan. 31, 2026	Dec. 31, 2015
Subsequent Event [Line Items]
Stock repurchase program, authorized amount			$ 6,300.0	$ 1,200.0
Stock repurchase program, remaining authorized repurchase amount		$ 700.0
Subsequent Event
Subsequent Event [Line Items]
Stock repurchase program, additional authorized amount	$ 600.0
Stock repurchase program, authorized amount	7,500.0
Stock repurchase program, remaining authorized repurchase amount	$ 640.0

Stock-Based Compensation - Narrative (Details) - $ / shares shares in Millions	Mar. 31, 2026	Dec. 31, 2025
Share-Based Payment Arrangement [Abstract]
Number of shares available for grant (in shares)	3.9
Common stock par value (in dollars per share)	$ 0.0005	$ 0.0005

Segment Information - Schedule of Reconciliation of Segment Gross Contribution to Net Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	$ 1,511,041	$ 1,534,130
Personnel expenses	367,815	386,199
Product and content delivery expenses	42,800	68,612
Other expenses	14,119	14,022
Gross contribution	1,086,307	1,065,297
Cost of services and product development - unallocated	4,573	6,197
Selling, general and administrative	726,349	730,308
Depreciation and amortization	45,431	50,760
Gain from sale of divested operation	(6,138)	0
Interest expenses and other, net	23,680	11,024
Income before income taxes	292,412	267,008
Insights
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	1,294,195	1,255,569
Conferences
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	78,325	72,597
Consulting
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	119,129	139,706
Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	$ 19,392	$ 66,258
Maximum
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Percent of target bonus charges allocated to segments	100.00%	100.00%
Operating Segments \| Insights
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	$ 1,294,195	$ 1,255,569
Personnel expenses	271,957	278,990
Product and content delivery expenses	3,630	4,396
Other expenses	7,091	6,236
Gross contribution	1,011,517	965,947
Operating Segments \| Conferences
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	78,325	72,597
Personnel expenses	18,031	17,746
Product and content delivery expenses	26,756	24,172
Other expenses	3,130	3,297
Gross contribution	30,408	27,382
Operating Segments \| Consulting
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	119,129	139,706
Personnel expenses	75,617	79,092
Product and content delivery expenses	2,939	3,263
Other expenses	3,768	3,959
Gross contribution	36,805	53,392
Operating Segments \| Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	19,392	66,258
Personnel expenses	2,210	10,371
Product and content delivery expenses	9,475	36,781
Other expenses	130	530
Gross contribution	$ 7,577	$ 18,576

Revenue and Related Matters - Schedule of Timing of Revenue Recognition Liabilities per Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,511,041	$ 1,534,130
Transferred over time
Disaggregation of Revenue [Line Items]
Total revenues	1,382,486	1,356,740
Transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	128,555	177,390
Insights
Disaggregation of Revenue [Line Items]
Total revenues	1,294,195	1,255,569
Insights \| Transferred over time
Disaggregation of Revenue [Line Items]
Total revenues	1,292,253	1,252,188
Insights \| Transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	1,942	3,381
Conferences
Disaggregation of Revenue [Line Items]
Total revenues	78,325	72,597
Conferences \| Transferred over time
Disaggregation of Revenue [Line Items]
Total revenues	0	0
Conferences \| Transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	78,325	72,597
Consulting
Disaggregation of Revenue [Line Items]
Total revenues	119,129	139,706
Consulting \| Transferred over time
Disaggregation of Revenue [Line Items]
Total revenues	90,159	104,152
Consulting \| Transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	28,970	35,554
Other
Disaggregation of Revenue [Line Items]
Total revenues	19,392	66,258
Other \| Transferred over time
Disaggregation of Revenue [Line Items]
Total revenues	74	400
Other \| Transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	$ 19,318	$ 65,858

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Sep. 30, 2025	Mar. 31, 2025
Goodwill [Line Items]
Amortization of intangibles	$ 20,066		$ 21,894
Digital Markets Reporting Unit
Goodwill [Line Items]
Goodwill impairment		$ 150,000

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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+ Details

- Definition

Amount of impairment loss from asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

+ References + Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

Derivatives and Hedging - Schedule of Derivative Gains and Losses That Have Been Recognized in Condensed Consolidated Statements Of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Derivative Instruments, Gain (Loss) [Line Items]
Total expense, net	$ 1,218	$ 3,868
Interest expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Total expense, net	$ 0	$ 4,464
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other (expense) income, net	Other (expense) income, net
Other expense (income), net
Derivative Instruments, Gain (Loss) [Line Items]
Total expense, net	$ 1,218	$ (596)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other (expense) income, net	Other (expense) income, net

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

Revenue and Related Matters (Tables)

3 Months Ended

Mar. 31, 2026

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue by Reportable Segment

Disaggregated Revenue — The Company’s disaggregated revenue by reportable segment is presented in the tables below for the periods indicated (in thousands).


By Primary Geographic Market (1)
Three Months Ended March 31, 2026
Primary Geographic Market	Insights		Conferences		Consulting		Other		Total
United States and Canada	$	771,368	$	57,300	$	81,084	$	14,553	$	924,305
Europe, Middle East and Africa	357,156		11,327		28,290		3,358		400,131
Other International	165,671		9,698		9,755		1,481		186,605
Total revenues	$	1,294,195	$	78,325	$	119,129	$	19,392	$	1,511,041

Three Months Ended March 31, 2025
Primary Geographic Market	Insights		Conferences		Consulting		Other		Total
United States and Canada	$	791,833	$	55,584	$	90,964	$	55,448	$	993,829
Europe, Middle East and Africa	313,507		9,142		32,303		8,193		363,145
Other International	150,229		7,871		16,439		2,617		177,156
Total revenues	$	1,255,569	$	72,597	$	139,706	$	66,258	$	1,534,130

(1)Revenue is reported based on where the sale is fulfilled.

Schedule of Disaggregation of Revenue

By Timing of Revenue Recognition


Three Months Ended March 31, 2026
Timing of Revenue Recognition	Insights		Conferences		Consulting		Other		Total
Transferred over time (1)	$	1,292,253	$	—	$	90,159	$	74	$	1,382,486
Transferred at a point in time (2)	1,942		78,325		28,970		19,318		128,555
Total revenues	$	1,294,195	$	78,325	$	119,129	$	19,392	$	1,511,041

Three Months Ended March 31, 2025
Timing of Revenue Recognition	Insights		Conferences		Consulting		Other		Total
Transferred over time (1)	$	1,252,188	$	—	$	104,152	$	400	$	1,356,740
Transferred at a point in time (2)	3,381		72,597		35,554		65,858		177,390
Total revenues	$	1,255,569	$	72,597	$	139,706	$	66,258	$	1,534,130

(1)Insights revenues in this category are recognized in connection with performance obligations that are satisfied over time using a time-elapsed output method to measure progress. Consulting revenues in this category are recognized over time using costs incurred to date relative to total estimated costs at completion.

(2)The revenues in this category are recognized in connection with performance obligations that are satisfied at the point in time that the contractual deliverables are provided to the customer.

Schedule for Contract with Customer, Asset and Liability

The table below provides information regarding certain of the Company’s balance sheet accounts that pertain to its contracts with customers (in thousands).


	March 31,		December 31,
	2026		2025
Assets:
Fees receivable, gross (1)	$	1,416,496	$	1,689,522
Contract assets recorded in Prepaid expenses and other current assets (2)	$	45,748	$	40,534

Contract liabilities:
Deferred revenues (current liability) (3)	$	3,018,870	$	2,810,056
Non-current deferred revenues recorded in Other liabilities (3)	31,846		31,569
Total contract liabilities	$	3,050,716	$	2,841,625

(1)Fees receivable represent an unconditional right to payment from the Company’s customers and include both billed and unbilled amounts.

(2)Contract assets represent recognized revenue for which the Company does not have an unconditional right to payment as of the balance sheet date because the project may be subject to a progress billing milestone or some other billing restrictions.

(3)Deferred revenues represent amounts (i) for which the Company has received an upfront customer payment or (ii) that pertain to recognized fees receivable. Both situations occur before the completion of the Company’s performance obligation(s).

Fair Value Disclosures

3 Months Ended

Mar. 31, 2026

Fair Value Disclosures [Abstract]

Fair Value Disclosures

The Company’s financial instruments include cash equivalents, fees receivable from customers, accounts payable and accrued liabilities, all of which are normally short-term in nature. The Company believes that the carrying amounts of these financial instruments reasonably approximate their fair values due to their short-term nature. The Company’s financial instruments also include its outstanding variable-rate borrowings under the 2024 Credit Agreement. The Company believes that the carrying amounts of its variable-rate borrowings reasonably approximate their fair values because the rates of interest on those borrowings reflect current market rates of interest for similar instruments with comparable maturities.

The Company enters into a limited number of derivatives transactions but does not enter into repurchase agreements, securities lending transactions or master netting arrangements. Receivables or payables that result from derivatives transactions are recorded gross in the Company’s Condensed Consolidated Balance Sheets.

FASB ASC Topic 820 provides a framework for the measurement of fair value and a valuation hierarchy based on the transparency of inputs used in the valuation of assets and liabilities. Classification within the valuation hierarchy is based on the lowest level of input that is significant to the resulting fair value measurement. The valuation hierarchy contains three levels. Level 1 measurements consist of quoted prices in active markets for identical assets or liabilities. Level 2 measurements include significant other observable inputs such as quoted prices for similar assets or liabilities in active markets; identical assets or liabilities in inactive markets; observable inputs such as interest rates and yield curves; and other market-corroborated inputs. Level 3 measurements include significant unobservable inputs such as internally-created valuation models. Generally, the Company does not utilize Level 3 valuation inputs to remeasure any of its assets or liabilities. However, Level 3 inputs may be

used by the Company when certain long-lived assets, including identifiable intangible assets, goodwill, and right-of-use assets are measured at fair value on a nonrecurring basis when there are indicators of impairment. Additionally, Level 3 inputs may be used by the Company in its required annual impairment review of goodwill. Information regarding the periodic assessment of the Company’s goodwill is included in Note 3 — Goodwill and Intangible Assets. The Company does not typically transfer assets or liabilities between different levels of the valuation hierarchy.

The table below presents the fair values of certain financial assets and liabilities that are measured at fair value on a recurring basis in the Company's financial statements (in thousands).


Description	March 31, 2026		December 31, 2025
Assets:
Values based on Level 1 inputs:
Deferred compensation plan assets (1)	$	23,441	$	19,188
Total Level 1 inputs	23,441		19,188
Values based on Level 2 inputs:
Deferred compensation plan assets (1)	150,417		155,949
Foreign currency forward contracts (2)	213		1,169

Total Level 2 inputs	150,630		157,118
Total Assets	$	174,071	$	176,306
Liabilities:
Values based on Level 2 inputs:
Deferred compensation plan liabilities (1)	$	178,390	$	178,331
Foreign currency forward contracts (2)	212		939
Total Level 2 inputs	178,602		179,270
Total Liabilities	$	178,602	$	179,270

(1)The Company has a deferred compensation plan for the benefit of certain highly compensated officers, managers and other key employees. The assets consist of investments in money market funds, mutual funds and company-owned life insurance contracts, which are valued based on Level 1 or Level 2 inputs. The related deferred compensation plan liabilities are recorded at fair value, or the estimated amount needed to settle the liability, which the Company considers to be a Level 2 input.

(2)The Company enters into foreign currency forward exchange contracts to hedge the effects of adverse fluctuations in foreign currency exchange rates (see Note 11 — Derivatives and Hedging). Valuation of these contracts is based on observable foreign currency exchange rates in active markets, which the Company considers to be a Level 2 input.

The table below presents the carrying amounts (net of deferred financing costs) and fair values of financial instruments that are not recorded at fair value in the Company’s Condensed Consolidated Balance Sheets (in thousands). The estimated fair value of the financial instruments was derived from quoted market prices provided by an independent dealer, which the Company considers to be a Level 2 input.


	Carrying Amount				Fair Value
	March 31,		December 31,		March 31,		December 31,
Description	2026		2025		2026		2025
2028 Notes	$	796,888	$	796,563	$	787,152	$	798,080
2029 Notes	596,811		596,578		564,276		578,760
2030 Notes	795,264		795,024		730,344		759,224
2031 Notes	346,708		346,564		341,674		351,869
2035 Notes	445,498		445,411		426,686		450,657
Total	$	2,981,169	$	2,980,140	$	2,850,132	$	2,938,590

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 107
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-107

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 940
-SubTopic 820
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478119/940-820-50-1

+ Details

Revenue and Related Matters - Schedule of Contract with Customer, Asset and Liability (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Assets:
Fees receivable, gross	$ 1,416,496		$ 1,689,522
Contract assets recorded in Prepaid expenses and other current assets	45,748		40,534
Contract liabilities:
Deferred revenues (current liability)	3,018,870		2,810,056
Non-current deferred revenues recorded in Other liabilities	31,846		31,569
Total contract liabilities	3,050,716		$ 2,841,625
Revenue recognized previously attributable to deferred revenues	$ 1,100,000	$ 1,000,000

Leases - Narrative (Details)	3 Months Ended
Leases - Narrative (Details)	Mar. 31, 2026
Leases [Abstract]
Renewal term (in years)	10 years
Option to terminate, term (in years)	1 year

Equity - Schedule of Changes in AOCI/L by Component (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 319,908	$ 1,359,169
Other comprehensive income (loss) activity during the period:
Change in AOCL before reclassifications to income	(4,250)	17,046
Reclassifications from AOCL to income	210	3,438
Other comprehensive income (loss), net of tax	(4,040)	20,484
Ending balance	63,384	1,497,854
Derivative reclassifications	(1,218)	(3,868)
Interest rate swaps
Other comprehensive income (loss) activity during the period:
Derivative reclassifications		4,500
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(41,015)	(88,333)
Other comprehensive income (loss) activity during the period:
Other comprehensive income (loss), net of tax	(4,040)	20,484
Ending balance	(45,055)	(67,849)
Interest Rate Swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		(9,800)
Other comprehensive income (loss) activity during the period:
Change in AOCL before reclassifications to income		0
Reclassifications from AOCL to income		3,390
Other comprehensive income (loss), net of tax		3,390
Ending balance		(6,410)
Defined Benefit Pension Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(5,944)	(5,214)
Other comprehensive income (loss) activity during the period:
Change in AOCL before reclassifications to income	(397)	0
Reclassifications from AOCL to income	210	48
Other comprehensive income (loss), net of tax	(187)	48
Ending balance	(6,131)	(5,166)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(35,071)	(73,319)
Other comprehensive income (loss) activity during the period:
Change in AOCL before reclassifications to income	(3,853)	17,046
Reclassifications from AOCL to income	0	0
Other comprehensive income (loss), net of tax	(3,853)	17,046
Ending balance	$ (38,924)	$ (56,273)

Revenue and Related Matters - Schedule of Disaggregation of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,511,041	$ 1,534,130
United States and Canada
Disaggregation of Revenue [Line Items]
Total revenues	924,305	993,829
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenues	400,131	363,145
Other International
Disaggregation of Revenue [Line Items]
Total revenues	186,605	177,156
Insights
Disaggregation of Revenue [Line Items]
Total revenues	1,294,195	1,255,569
Insights \| United States and Canada
Disaggregation of Revenue [Line Items]
Total revenues	771,368	791,833
Insights \| Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenues	357,156	313,507
Insights \| Other International
Disaggregation of Revenue [Line Items]
Total revenues	165,671	150,229
Conferences
Disaggregation of Revenue [Line Items]
Total revenues	78,325	72,597
Conferences \| United States and Canada
Disaggregation of Revenue [Line Items]
Total revenues	57,300	55,584
Conferences \| Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenues	11,327	9,142
Conferences \| Other International
Disaggregation of Revenue [Line Items]
Total revenues	9,698	7,871
Consulting
Disaggregation of Revenue [Line Items]
Total revenues	119,129	139,706
Consulting \| United States and Canada
Disaggregation of Revenue [Line Items]
Total revenues	81,084	90,964
Consulting \| Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenues	28,290	32,303
Consulting \| Other International
Disaggregation of Revenue [Line Items]
Total revenues	9,755	16,439
Other
Disaggregation of Revenue [Line Items]
Total revenues	19,392	66,258
Other \| United States and Canada
Disaggregation of Revenue [Line Items]
Total revenues	14,553	55,448
Other \| Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenues	3,358	8,193
Other \| Other International
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,481	$ 2,617

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Debt - Narrative (Details) - USD ($)				3 Months Ended
Debt - Narrative (Details) - USD ($)	Nov. 20, 2025	Mar. 26, 2024	Sep. 28, 2020	Mar. 31, 2026	Dec. 31, 2025	Jun. 18, 2021	Jun. 22, 2020
Senior Notes
Debt Instrument [Line Items]
Proceeds from sale of notes	$ 799,900,000
2024 Credit Agreement \| Senior Notes
Debt Instrument [Line Items]
Repayments of long-term debt	274,400,000
2031 Notes \| Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount	$ 350,000,000.0
Debt instrument, fixed interest rate	4.95%			4.95%	4.95%
Debt instrument, issue price, percent	99.97%
2035 Notes \| Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount	$ 450,000,000.0
Debt instrument, fixed interest rate	5.60%			5.60%	5.60%
Debt instrument, issue price, percent	99.992%
2029 Notes \| Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount						$ 600,000,000.0
Debt instrument, fixed interest rate				3.63%	3.63%	3.625%
Debt instrument, issue price, percent						100.00%
2030 Notes \| Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount			$ 800,000,000.0
Debt instrument, fixed interest rate			3.75%	3.75%	3.75%
Debt instrument, issue price, percent			100.00%
Percentage of principal amount redeemed			40.00%
2028 Notes \| Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount							$ 800,000,000.0
Debt instrument, fixed interest rate				4.50%	4.50%		4.50%
Debt instrument, issue price, percent							100.00%
Revolving Credit Facility \| 2024 Credit Agreement \| Unsecured Debt
Debt Instrument [Line Items]
Aggregate principal amount		$ 1,000,000,000.0
Debt instrument term		5 years
Line of credit facility, additional borrowing capacity		$ 750,000,000
Additional interest above base rate				1.48%
Contractual annualized interest rate				5.23%
Debt instrument, fixed interest rate				3.75%
Revolving Credit Facility \| 2024 Credit Agreement \| Unsecured Debt \| Minimum
Debt Instrument [Line Items]
Line of credit facility, commitment fee percentage		0.125%
Revolving Credit Facility \| 2024 Credit Agreement \| Unsecured Debt \| Maximum
Debt Instrument [Line Items]
Line of credit facility, commitment fee percentage		0.25%
Revolving Credit Facility \| 2024 Credit Agreement \| Unsecured Debt \| Variable Rate Component One
Debt Instrument [Line Items]
Additional interest above base rate				0.10%
Revolving Credit Facility \| 2024 Credit Agreement \| Unsecured Debt \| Variable Rate Component Two \| Minimum
Debt Instrument [Line Items]
Additional interest above base rate		1.125%
Revolving Credit Facility \| 2024 Credit Agreement \| Unsecured Debt \| Variable Rate Component Two \| Maximum
Debt Instrument [Line Items]
Additional interest above base rate		1.75%
Letter of Credit \| 2024 Credit Agreement \| Unsecured Debt
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 75,000,000.0

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 1,666,946	$ 1,722,521
Fees receivable, net of allowances of $5,000 for both periods	1,411,496	1,684,522
Deferred commissions	379,221	400,728
Prepaid expenses and other current assets	190,334	152,205
Assets held-for-sale	0	106,361
Total current assets	3,647,997	4,066,337
Property, equipment and leasehold improvements, net	204,839	214,183
Operating lease right-of-use assets	222,350	213,997
Goodwill	2,740,264	2,740,802
Intangible assets, net	315,754	336,303
Other assets	524,069	513,778
Total Assets	7,655,273	8,085,400
Current liabilities:
Accounts payable and accrued liabilities	862,464	1,236,533
Deferred revenues	3,018,870	2,810,056
Current portion of long-term debt	5,000	5,000
Liabilities held-for-sale	0	20,503
Total current liabilities	3,886,334	4,072,092
Long-term debt, net of deferred financing fees	2,977,971	2,976,674
Operating lease liabilities	275,635	270,200
Other liabilities	451,949	446,526
Total Liabilities	7,591,889	7,765,492
Stockholders’ Equity
Preferred stock, $0.01 par value, 5,000,000 shares authorized; none issued or outstanding	0	0
Common stock, $0.0005 par value, 250,000,000 shares authorized; 163,602,067 shares issued for both periods	82	82
Additional paid-in capital	2,729,386	2,679,101
Accumulated other comprehensive loss, net	(45,055)	(41,015)
Accumulated earnings	6,944,582	6,722,238
Treasury stock, at cost, 95,724,933 and 92,752,769 common shares, respectively	(9,565,611)	(9,040,498)
Total Stockholders’ Equity	63,384	319,908
Total Liabilities and Stockholders’ Equity	$ 7,655,273	$ 8,085,400

Leases - Schedule of Net Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Leases [Abstract]
Operating lease cost	$ 19,889	$ 24,348
Lease cost	5,305	5,685
Sublease income	(11,121)	(11,386)
Total lease cost, net	14,073	18,647
Cash paid for amounts included in the measurement of operating lease liabilities	27,639	28,657
Cash receipts from sublease arrangements	11,359	11,144
Right-of-use assets obtained in exchange for new operating lease liabilities	25,881	5,071
Cost for subleasing activities	$ 8,000	$ 8,500

Contingencies	3 Months Ended
Contingencies	Mar. 31, 2026
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Legal Matters. The Company is involved in legal proceedings, claims and compliance matters arising in the ordinary course of business. The Company records a provision in its consolidated financial statements when it is determined that an unfavorable outcome in one of these matters is probable and the amount of the loss can be reasonably estimated. The Company believes that the potential liability, if any, in excess of amounts already accrued for these contingencies will not have a material effect on its financial position, cash flows or results of operations when resolved in a future period. Indemnifications. The Company has various agreements that may obligate it to indemnify the other party with respect to certain matters. Generally, these indemnification clauses are included in contracts arising in the normal course of business under which the Company customarily agrees to hold the other party harmless against losses arising from a breach of representations related to matters such as title to assets sold and licensed or certain intellectual property rights. It is not possible to predict the maximum potential amount of future payments under these indemnification agreements due to the conditional nature of the Company’s obligations and the unique facts of each particular agreement. Historically, payments made by the Company under these agreements have not been material. As of March 31, 2026, the Company did not have any material payment obligations under any such indemnification agreements.

Leases - Schedule of Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Leases [Abstract]
Accounts payable and accrued liabilities	$ 96,569	$ 96,076
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accounts payable and accrued liabilities	Accounts payable and accrued liabilities
Operating lease liabilities	$ 275,635	$ 270,200
Total operating lease liabilities included in the Condensed Consolidated Balance Sheets	$ 372,204	$ 366,276

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 70,068	$ 56,069
Effective income tax rate	24.00%	21.00%
Unrecognized tax benefits	$ 292,600		$ 301,600

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-4

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147476153/220-40-55-14

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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-Subparagraph (ee)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 8: http://www.xbrl.org/2003/role/exampleRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-9

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-Paragraph 1
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
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-URI https://asc.fasb.org/1943274/2147483443/250-10-50-8

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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Reference 15: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
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+ Details

Fair Value Disclosures - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Assets:
Total Assets	$ 174,071	$ 176,306
Level 1
Assets:
Total Assets	23,441	19,188
Level 1 \| Deferred compensation plan assets
Assets:
Total Assets	23,441	19,188
Level 2
Assets:
Total Assets	150,630	157,118
Liabilities:
Total Liabilities	178,602	179,270
Level 2 \| Foreign currency forward contracts
Assets:
Total Assets	213	1,169
Liabilities:
Total Liabilities	212	939
Level 2 \| Deferred compensation plan assets
Assets:
Total Assets	150,417	155,949
Level 2 \| Deferred compensation plan liabilities
Liabilities:
Total Liabilities	$ 178,390	$ 178,331

Revenue and Related Matters

3 Months Ended

Mar. 31, 2026

Revenue from Contract with Customer [Abstract]

Revenue and Related Matters

Disaggregated Revenue — The Company’s disaggregated revenue by reportable segment is presented in the tables below for the periods indicated (in thousands).


By Primary Geographic Market (1)
Three Months Ended March 31, 2026
Primary Geographic Market	Insights		Conferences		Consulting		Other		Total
United States and Canada	$	771,368	$	57,300	$	81,084	$	14,553	$	924,305
Europe, Middle East and Africa	357,156		11,327		28,290		3,358		400,131
Other International	165,671		9,698		9,755		1,481		186,605
Total revenues	$	1,294,195	$	78,325	$	119,129	$	19,392	$	1,511,041

Three Months Ended March 31, 2025
Primary Geographic Market	Insights		Conferences		Consulting		Other		Total
United States and Canada	$	791,833	$	55,584	$	90,964	$	55,448	$	993,829
Europe, Middle East and Africa	313,507		9,142		32,303		8,193		363,145
Other International	150,229		7,871		16,439		2,617		177,156
Total revenues	$	1,255,569	$	72,597	$	139,706	$	66,258	$	1,534,130

(1)Revenue is reported based on where the sale is fulfilled.

The Company’s revenue is generated primarily through direct sales to clients by domestic and international sales forces and a network of independent international sales agents.

By Timing of Revenue Recognition


Three Months Ended March 31, 2026
Timing of Revenue Recognition	Insights		Conferences		Consulting		Other		Total
Transferred over time (1)	$	1,292,253	$	—	$	90,159	$	74	$	1,382,486
Transferred at a point in time (2)	1,942		78,325		28,970		19,318		128,555
Total revenues	$	1,294,195	$	78,325	$	119,129	$	19,392	$	1,511,041

Three Months Ended March 31, 2025
Timing of Revenue Recognition	Insights		Conferences		Consulting		Other		Total
Transferred over time (1)	$	1,252,188	$	—	$	104,152	$	400	$	1,356,740
Transferred at a point in time (2)	3,381		72,597		35,554		65,858		177,390
Total revenues	$	1,255,569	$	72,597	$	139,706	$	66,258	$	1,534,130

(2)The revenues in this category are recognized in connection with performance obligations that are satisfied at the point in time that the contractual deliverables are provided to the customer.

Performance Obligations — For customer contracts that are greater than one year in duration, the aggregate amount of the transaction price allocated to performance obligations that were unsatisfied (or partially unsatisfied) as of March 31, 2026 was approximately $6.6 billion. The Company expects to recognize $3.2 billion, $2.6 billion and $0.8 billion of this revenue (most of which pertains to Insights) during the remainder of 2026, the year ending December 31, 2027 and thereafter, respectively. The Company applies a practical expedient that is permitted under ASC Topic 606 and, accordingly, it does not disclose such performance obligation information for customer contracts that have original durations of one year or less. The Company’s performance obligations for contracts meeting this ASC Topic 606 disclosure exclusion primarily include: (i) stand-ready services under Insights subscription contracts; (ii) holding conferences and meetings where attendees and exhibitors can participate; and (iii) providing customized Consulting solutions for clients under fixed fee and time and materials engagements. The remaining duration of these performance obligations is generally less than one year, which aligns with the period that the parties have enforceable rights and obligations under the affected contracts.

Customer Contract Assets and Liabilities — The timing of the recognition of revenue and the amount and timing of the Company’s billings and cash collections, including upfront customer payments, result in the recognition of both assets and liabilities on the Company’s Condensed Consolidated Balance Sheets. The table below provides information regarding certain of the Company’s balance sheet accounts that pertain to its contracts with customers (in thousands).


	March 31,		December 31,
	2026		2025
Assets:
Fees receivable, gross (1)	$	1,416,496	$	1,689,522
Contract assets recorded in Prepaid expenses and other current assets (2)	$	45,748	$	40,534

Contract liabilities:
Deferred revenues (current liability) (3)	$	3,018,870	$	2,810,056
Non-current deferred revenues recorded in Other liabilities (3)	31,846		31,569
Total contract liabilities	$	3,050,716	$	2,841,625

(1)Fees receivable represent an unconditional right to payment from the Company’s customers and include both billed and unbilled amounts.

The Company recognized revenue of $1.1 billion and $1.0 billion during the three months ended March 31, 2026 and 2025, respectively, that was attributable to deferred revenues that were recorded at the beginning of each such period. Those amounts primarily consisted of Insights revenues that were recognized ratably as control of the goods or services passed to the customer during the reporting periods. During each of the three months ended March 31, 2026 and 2025, the Company did not record any material impairments related to its contract assets.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-9

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-10

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-15

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (c)
-Publisher FASB
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Name Accounting Standards Codification
-Section 50
-Paragraph 12
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-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-13

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 606
-Publisher FASB
-URI https://asc.fasb.org/606/tableOfContent

+ Details

Goodwill and Intangible Assets - Schedule of Estimated Future Amortization Expense by Year From Amortizable Intangibles (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2026 (remaining nine months)	$ 60,052
2027	79,460
2028	77,989
2029	77,910
2030	20,343
Finite-lived intangible assets, net	$ 315,754	$ 336,303

Business and Basis of Presentation	3 Months Ended
Business and Basis of Presentation	Mar. 31, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Basis of Presentation	Business and Basis of Presentation Business. Gartner, Inc. (NYSE: IT) delivers actionable, objective business and technology insights that drive smarter decisions and stronger performance on an organization’s mission-critical priorities. Segments. Gartner delivers its products and services globally through three reportable segments: Business and Technology Insights (or “Insights”), Conferences and Consulting. Revenues and other financial information for the Company’s segments are discussed in Note 7 — Segment Information. Basis of presentation. The accompanying interim Condensed Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”), as defined in Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 270 for interim financial information and with the applicable instructions of U.S. Securities and Exchange Commission (“SEC”) Rule 10-01 of Regulation S-X on Form 10-Q, and should be read in conjunction with the consolidated financial statements and related notes of the Company in its Annual Report on Form 10-K for the year ended December 31, 2025. The fiscal year of Gartner is the twelve-month period from January 1 through December 31. In the opinion of management, all normal recurring accruals and adjustments considered necessary for a fair presentation of financial position, results of operations and cash flows at the dates and for the periods presented herein have been included. The results of operations for the three months ended March 31, 2026 may not be indicative of the results of operations for the remainder of 2026 or beyond. When used in these notes, the terms “Gartner,” the “Company,” “we,” “us,” or “our” refer to Gartner, Inc. and its consolidated subsidiaries. Principles of consolidation. The accompanying interim Condensed Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated. Use of estimates. The preparation of the accompanying interim Condensed Consolidated Financial Statements requires management to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities, and reported amounts of revenues and expenses. Such estimates include the valuation of fees receivable, goodwill, intangible assets, deferred tax assets and other long-lived assets, as well as tax accruals and other liabilities. In addition, estimates are used in revenue recognition, income tax expense or benefit, performance-based compensation charges, depreciation and amortization. Management believes its use of estimates in the accompanying Consolidated Financial Statements to be reasonable. Management continually evaluates and revises its estimates using historical experience and other factors, including the general economic environment and actions it may take in the future. Management adjusts these estimates when facts and circumstances dictate. However, these estimates may involve significant uncertainties and judgments and cannot be determined with precision. In addition, these estimates are based on management’s best judgment at a point in time. As a result, differences between estimates and actual results could be material and would be reflected in the Company’s consolidated financial statements in future periods. Revenue recognition. Revenue is recognized in accordance with the requirements of FASB ASC Topic 606, Revenue from Contracts with Customers (“ASC Topic 606”). Revenue is only recognized when all of the required criteria for revenue recognition have been met. The accompanying Condensed Consolidated Statements of Operations present revenue net of any sales or value-added taxes that we collect from customers and remit to government authorities. ASC Topic 270 requires certain disclosures in interim financial statements around the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Note 4 — Revenue and Related Matters provides additional information regarding the Company’s revenues. Adoption of new accounting standard. The Company adopted the accounting standard described below during 2026. Credit Losses— In July 2025, the FASB issued ASU 2025-05, Financial Instruments – Credit Losses (Topic 326) (“ASU 2025-05”). The amendments in this ASU introduce a practical expedient for all entities related to applying Subtopic 326-20 to current accounts receivable and current contract assets arising from transactions accounted for under Topic 606. In developing reasonable and supportable forecasts as part of estimating expected credit losses, all entities may elect a practical expedient that assumes that current conditions as of the balance sheet date do not change for the remaining life of the asset. The amendments are expected to provide decision-useful information to investors and other financial statement users while reducing the time and effort necessary to analyze and estimate credit losses for current accounts receivable and current contract assets. The amendments were effective for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods. Early adoption was permitted in both interim and annual reporting periods in which financial statements have not yet been issued or made available for issuance. The Company adopted ASU 2025-05 effective in 2026 and the adoption had no impacts to the Company's results of operations, cash flows, or financial condition. Accounting standards issued but not yet adopted. The FASB has issued accounting standards that have not yet become effective as of March 31, 2026 and may impact the Company’s Consolidated Financial Statements or related disclosures in future periods. The standards and their potential impacts are discussed below. Income Statement— In November 2024, the FASB issued ASU 2024-03, Income Statement-Reporting Comprehensive Income- Expense Disaggregation Disclosures (“ASU No. 2024-03”). The amendments in this ASU are expected to improve the disclosures about a public business entity’s expenses and address requests from investors for more detailed information about the types of expenses (including employee compensation, depreciation and amortization) in commonly presented expense captions (such as cost of sales, SG&A and research and development). ASU 2024-03 will require a quantitative disclosure of the components of each income statement line item (e.g., cost of services and product development and selling, general and administrative expenses). It will also require entities to disclose the total amount of selling expenses, and, on an annual basis, an entity’s definition of selling expenses. The amendments are effective for annual reporting periods with fiscal years beginning after December 15, 2026, and interim reporting periods in fiscal years beginning after December 15, 2027. The Company expects this ASU to only impact its disclosures with no impacts to the Company's results of operations, cash flows, or financial condition. Internal-use Software— In September 2025, the FASB issued ASU 2025-06, Intangibles-Goodwill and Other-Internal Use Software (Subtopic 350-40). The amendments in this ASU remove all references to project stages, and requires entities to start capitalizing software costs when (1) management has authorized and committed to funding the software project and (2) it is probable that the project will be completed and the software will be used to perform the function intended. The amendments are effective for annual reporting periods with fiscal years beginning after December 15, 2027, and interim reporting periods within those annual reporting periods. The Company expects this ASU will not have a material impact to the Company's results of operations, cash flows, or financial condition.

Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2026
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes was $70.1 million and $56.1 million for the three months ended March 31, 2026 and 2025, respectively. The effective income tax rate was 24.0% and 21.0% for the three months ended March 31, 2026, and 2025, respectively. The increase in the effective income tax rate in the current period was primarily due to the unfavorable impact of stock-based compensation, partially offset by the favorable release of reserves upon the resolution of the related inquiries. The Company had gross unrecognized tax benefits of $292.6 million on March 31, 2026 and $301.6 million on December 31, 2025. Recent legislative developments in the U.S. and internationally have introduced significant changes to tax frameworks, including modifications impacting business provisions, international taxation, and global minimum tax requirements. These changes have various effective dates, with some provisions already in effect and others to be implemented over the coming years. While these evolving legislative measures have not had a material impact on the Company’s consolidated financial results in the current period, the Company is actively monitoring and assessing their potential effects. The Company will continue to evaluate and reflect the impact of these legislative changes in its future financial statements as appropriate.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 740
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477617/942-740-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
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-Name Accounting Standards Codification
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-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 740
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478822/944-740-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 231
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12C

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12B

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 270
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477891/740-270-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.5.Q1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-13

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
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-Publisher FASB
-URI https://asc.fasb.org/740/tableOfContent

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-14

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-21

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
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-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-17

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482603/740-30-50-2

+ Details

Debt (Tables)

3 Months Ended

Mar. 31, 2026

Debt Disclosure [Abstract]

Schedule of Debt

The Company’s total outstanding borrowings are summarized in the table below (in thousands).


	March 31,		December 31,
Description	2026		2025
2024 Credit Agreement - Revolving credit facility (1)	$	—	$	—
4.50% Senior Notes due 2028 (“2028 Notes”)	800,000		800,000
3.63% Senior Notes due 2029 (“2029 Notes”)	600,000		600,000
3.75% Senior Notes due 2030 (“2030 Notes”)	800,000		800,000
4.95% Senior Notes due 2031 (“2031 Notes”)	350,000		350,000
5.60% Senior Notes due 2035 (“2035 Notes”)	450,000		450,000
Other (2)	5,000		5,000
Principal amount outstanding (3)	3,005,000		3,005,000
Less: Deferred financing fees and unamortized discounts (4)	(22,029)		(23,326)
Net balance sheet carrying amount	$	2,982,971	$	2,981,674

(1)The Company had approximately $1.0 billion of available borrowing capacity on the 2024 Credit Agreement revolver (not including the expansion feature) as of March 31, 2026.

(2)Consists of a State of Connecticut economic development loan originated in 2019 with a 10-year maturity and bears interest at a fixed rate of 1.75%. The Company repaid the loan in April 2026.

(3)The weighted average annual effective rate on the Company’s outstanding debt for the three months ended March 31, 2026, was 4.34%.

(4)Deferred financing fees and unamortized discounts are being amortized to Interest expense, net over the term of the related debt obligation.

Leases

3 Months Ended

Mar. 31, 2026

Leases [Abstract]

Leases

The Company’s leasing activities are primarily for facilities under cancelable and non-cancelable lease agreements expiring during 2026 and through 2038. These facilities support our executive and administrative activities, sales, systems support, operations, and other functions. The Company also has leases for office equipment and other assets, which are not significant. Certain of these lease agreements include (i) renewal options to extend the lease term for up to ten years and/or (ii) options to terminate the agreement within one year. Additionally, certain of the Company’s lease agreements provide standard recurring escalations of lease payments for, among other things, increases in a lessor’s maintenance costs and taxes. Under some lease agreements, the Company may be entitled to allowances, free rent, lessor-financed tenant improvements and other incentives. The Company’s lease agreements do not contain any material residual value guarantees or material restrictive covenants.

The Company subleases certain office space that it does not intend to occupy. Such sublease arrangements expire during 2026 and through 2032 and primarily relate to facilities in Arlington, Virginia. Certain of the Company’s sublease agreements: (i) include renewal and termination options; (ii) provide for customary escalations of lease payments in the normal course of business; and (iii) grant the subtenant certain allowances, free rent, Gartner-financed tenant improvements and other incentives.

All of the Company’s leasing and subleasing activity is recognized in Selling, general and administrative expense in the accompanying Condensed Consolidated Statements of Operations. The table below presents the Company’s net lease cost and certain other information related to the Company’s leasing activities as of and for the periods indicated (dollars in thousands).


	Three Months Ended
	March 31,
Description:	2026		2025
Operating lease cost (1)	$	19,889	$	24,348
Lease cost (2)	5,305		5,685
Sublease income	(11,121)		(11,386)
Total lease cost, net (3)	$	14,073	$	18,647
Cash paid for amounts included in the measurement of operating lease liabilities	$	27,639	$	28,657
Cash receipts from sublease arrangements	$	11,359	$	11,144
Right-of-use assets obtained in exchange for new operating lease liabilities	$	25,881	$	5,071

(1)Included in operating lease cost was $8.0 million and $8.5 million for the three months ended March 31, 2026 and 2025, respectively, for costs related to subleasing activities.

(2)These amounts are primarily variable lease and nonlease costs that are not fixed at the lease commencement date or are dependent on something other than an index or a rate.

(3)The Company did not capitalize any operating lease costs during any of the periods presented.

The table below indicates where the discounted operating lease payments from the above table are classified in the accompanying Condensed Consolidated Balance Sheets (in thousands).


	March 31,		December 31,
Description:	2026		2025
Accounts payable and accrued liabilities	$	96,569	$	96,076
Operating lease liabilities	275,635		270,200
Total operating lease liabilities included in the Condensed Consolidated Balance Sheets	$	372,204	$	366,276

Leases


	Three Months Ended
	March 31,
Description:	2026		2025
Operating lease cost (1)	$	19,889	$	24,348
Lease cost (2)	5,305		5,685
Sublease income	(11,121)		(11,386)
Total lease cost, net (3)	$	14,073	$	18,647
Cash paid for amounts included in the measurement of operating lease liabilities	$	27,639	$	28,657
Cash receipts from sublease arrangements	$	11,359	$	11,144
Right-of-use assets obtained in exchange for new operating lease liabilities	$	25,881	$	5,071

(1)Included in operating lease cost was $8.0 million and $8.5 million for the three months ended March 31, 2026 and 2025, respectively, for costs related to subleasing activities.

(2)These amounts are primarily variable lease and nonlease costs that are not fixed at the lease commencement date or are dependent on something other than an index or a rate.

(3)The Company did not capitalize any operating lease costs during any of the periods presented.

The table below indicates where the discounted operating lease payments from the above table are classified in the accompanying Condensed Consolidated Balance Sheets (in thousands).


	March 31,		December 31,
Description:	2026		2025
Accounts payable and accrued liabilities	$	96,569	$	96,076
Operating lease liabilities	275,635		270,200
Total operating lease liabilities included in the Condensed Consolidated Balance Sheets	$	372,204	$	366,276

Equity - Narrative (Details) - USD ($) $ in Billions	Mar. 31, 2026	Jan. 31, 2026	Dec. 31, 2015
Stockholders' Equity Note [Abstract]
Stock repurchase program, authorized amount		$ 6.3	$ 1.2
Stock repurchase program, remaining authorized repurchase amount	$ 0.7

Fair Value Disclosures - Schedule of Fair Value of Debt Instruments (Details) - Senior Notes - Level 2 - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	$ 2,981,169	$ 2,980,140
Fair Value	2,850,132	2,938,590
2028 Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	796,888	796,563
Fair Value	787,152	798,080
2029 Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	596,811	596,578
Fair Value	564,276	578,760
2030 Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	795,264	795,024
Fair Value	730,344	759,224
2031 Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	346,708	346,564
Fair Value	341,674	351,869
2035 Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	445,498	445,411
Fair Value	$ 426,686	$ 450,657

Divestiture (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
Divestiture (Details) - USD ($) $ in Thousands	Feb. 28, 2026	Mar. 31, 2026	Mar. 31, 2025
Disposal Groups, Including Discontinued Operations [Line Items]
Gain from sale of divested operation		$ 6,138	$ 0
Disposed of by Sale \| Digital Markets
Disposal Groups, Including Discontinued Operations [Line Items]
Disposal consideration	$ 104,800
Gain from sale of divested operation	$ 6,100

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Statement of Comprehensive Income [Abstract]
Net income	$ 222,344	$ 210,939
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(3,853)	17,046
Interest rate swaps – net change in deferred gain or loss	0	3,390
Pension plans – net change in deferred actuarial loss	(187)	48
Other comprehensive income (loss), net of tax	(4,040)	20,484
Comprehensive income	$ 218,304	$ 231,423

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Equity - Schedule of Share Repurchase Program and Share Repurchase Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Equity, Class of Treasury Stock [Line Items]
Number of shares repurchased (in shares)	3,310,253	300,745
Cash paid for repurchased shares	$ 534,637	$ 162,672
Treasury stock, average price paid per share (in dollars per share)	$ 158.49	$ 507.65
Open Market Purchases
Equity, Class of Treasury Stock [Line Items]
Cash paid for repurchased shares	$ 10,000	$ 10,000

Segment Information - Narrative (Details)	3 Months Ended
Segment Information - Narrative (Details)	Mar. 31, 2026 USD ($) segment
Segment Reporting Information [Line Items]
Number of reportable segments \| segment	3
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues \| $	$ 0

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details

Subsequent Event	3 Months Ended
Subsequent Event	Mar. 31, 2026
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event On April 30, 2026, the Company’s Board of Directors authorized incremental share repurchases of up to an additional $600.0 million of Gartner’s common stock. This authorization is in addition to the previously authorized repurchases of up to $7.5 billion, which, as of the end of April 2026, had approximately $640.0 million remaining.

Debt - Borrowings (Details) - USD ($) $ in Thousands		3 Months Ended
Debt - Borrowings (Details) - USD ($) $ in Thousands	Mar. 26, 2024	Mar. 31, 2026	Dec. 31, 2025	Nov. 20, 2025	Jun. 18, 2021	Sep. 28, 2020	Jun. 22, 2020
Debt Instrument [Line Items]
Principal amount outstanding		$ 3,005,000	$ 3,005,000
Less: deferred financing fees and unamortized discounts		(22,029)	(23,326)
Net balance sheet carrying amount		$ 2,982,971	2,981,674
Weighted average effective rate		4.34%
Unsecured Debt \| Revolving Credit Facility \| 2024 Credit Agreement
Debt Instrument [Line Items]
Principal amount outstanding		$ 0	0
Remaining borrowing capacity		$ 1,000,000
Debt instrument term	5 years
Debt instrument, fixed interest rate		3.75%
Senior Notes \| 2028 Notes
Debt Instrument [Line Items]
Principal amount outstanding		$ 800,000	$ 800,000
Debt instrument, fixed interest rate		4.50%	4.50%				4.50%
Senior Notes \| 2029 Notes
Debt Instrument [Line Items]
Principal amount outstanding		$ 600,000	$ 600,000
Debt instrument, fixed interest rate		3.63%	3.63%		3.625%
Senior Notes \| 2030 Notes
Debt Instrument [Line Items]
Principal amount outstanding		$ 800,000	$ 800,000
Debt instrument, fixed interest rate		3.75%	3.75%			3.75%
Senior Notes \| 2031 Notes
Debt Instrument [Line Items]
Principal amount outstanding		$ 350,000	$ 350,000
Debt instrument, fixed interest rate		4.95%	4.95%	4.95%
Senior Notes \| 2035 Notes
Debt Instrument [Line Items]
Principal amount outstanding		$ 450,000	$ 450,000
Debt instrument, fixed interest rate		5.60%	5.60%	5.60%
Other
Debt Instrument [Line Items]
Principal amount outstanding		$ 5,000	$ 5,000
Connecticut Economic Development Program \| Economic Development Loan 2
Debt Instrument [Line Items]
Debt instrument term		10 years
Debt instrument, fixed interest rate		1.75%

Business and Basis of Presentation (Policies)	3 Months Ended
Business and Basis of Presentation (Policies)	Mar. 31, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Segments	Segments. Gartner delivers its products and services globally through three reportable segments: Business and Technology Insights (or “Insights”), Conferences and Consulting. Revenues and other financial information for the Company’s segments are discussed in Note 7 — Segment Information.
Basis of presentation	Basis of presentation. The accompanying interim Condensed Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”), as defined in Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 270 for interim financial information and with the applicable instructions of U.S. Securities and Exchange Commission (“SEC”) Rule 10-01 of Regulation S-X on Form 10-Q, and should be read in conjunction with the consolidated financial statements and related notes of the Company in its Annual Report on Form 10-K for the year ended December 31, 2025. The fiscal year of Gartner is the twelve-month period from January 1 through December 31. In the opinion of management, all normal recurring accruals and adjustments considered necessary for a fair presentation of financial position, results of operations and cash flows at the dates and for the periods presented herein have been included. The results of operations for the three months ended March 31, 2026 may not be indicative of the results of operations for the remainder of 2026 or beyond. When used in these notes, the terms “Gartner,” the “Company,” “we,” “us,” or “our” refer to Gartner, Inc. and its consolidated subsidiaries.
Principles of consolidation	Principles of consolidation. The accompanying interim Condensed Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated.
Use of estimates	Use of estimates. The preparation of the accompanying interim Condensed Consolidated Financial Statements requires management to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities, and reported amounts of revenues and expenses. Such estimates include the valuation of fees receivable, goodwill, intangible assets, deferred tax assets and other long-lived assets, as well as tax accruals and other liabilities. In addition, estimates are used in revenue recognition, income tax expense or benefit, performance-based compensation charges, depreciation and amortization. Management believes its use of estimates in the accompanying Consolidated Financial Statements to be reasonable. Management continually evaluates and revises its estimates using historical experience and other factors, including the general economic environment and actions it may take in the future. Management adjusts these estimates when facts and circumstances dictate. However, these estimates may involve significant uncertainties and judgments and cannot be determined with precision. In addition, these estimates are based on management’s best judgment at a point in time. As a result, differences between estimates and actual results could be material and would be reflected in the Company’s consolidated financial statements in future periods.
Revenue recognition	Revenue recognition. Revenue is recognized in accordance with the requirements of FASB ASC Topic 606, Revenue from Contracts with Customers (“ASC Topic 606”). Revenue is only recognized when all of the required criteria for revenue recognition have been met. The accompanying Condensed Consolidated Statements of Operations present revenue net of any sales or value-added taxes that we collect from customers and remit to government authorities. ASC Topic 270 requires certain disclosures in interim financial statements around the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers.
Adoption of new accounting standard and Accounting standards issued but not yet adopted	Adoption of new accounting standard. The Company adopted the accounting standard described below during 2026. Credit Losses— In July 2025, the FASB issued ASU 2025-05, Financial Instruments – Credit Losses (Topic 326) (“ASU 2025-05”). The amendments in this ASU introduce a practical expedient for all entities related to applying Subtopic 326-20 to current accounts receivable and current contract assets arising from transactions accounted for under Topic 606. In developing reasonable and supportable forecasts as part of estimating expected credit losses, all entities may elect a practical expedient that assumes that current conditions as of the balance sheet date do not change for the remaining life of the asset. The amendments are expected to provide decision-useful information to investors and other financial statement users while reducing the time and effort necessary to analyze and estimate credit losses for current accounts receivable and current contract assets. The amendments were effective for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods. Early adoption was permitted in both interim and annual reporting periods in which financial statements have not yet been issued or made available for issuance. The Company adopted ASU 2025-05 effective in 2026 and the adoption had no impacts to the Company's results of operations, cash flows, or financial condition. Accounting standards issued but not yet adopted. The FASB has issued accounting standards that have not yet become effective as of March 31, 2026 and may impact the Company’s Consolidated Financial Statements or related disclosures in future periods. The standards and their potential impacts are discussed below. Income Statement— In November 2024, the FASB issued ASU 2024-03, Income Statement-Reporting Comprehensive Income- Expense Disaggregation Disclosures (“ASU No. 2024-03”). The amendments in this ASU are expected to improve the disclosures about a public business entity’s expenses and address requests from investors for more detailed information about the types of expenses (including employee compensation, depreciation and amortization) in commonly presented expense captions (such as cost of sales, SG&A and research and development). ASU 2024-03 will require a quantitative disclosure of the components of each income statement line item (e.g., cost of services and product development and selling, general and administrative expenses). It will also require entities to disclose the total amount of selling expenses, and, on an annual basis, an entity’s definition of selling expenses. The amendments are effective for annual reporting periods with fiscal years beginning after December 15, 2026, and interim reporting periods in fiscal years beginning after December 15, 2027. The Company expects this ASU to only impact its disclosures with no impacts to the Company's results of operations, cash flows, or financial condition. Internal-use Software— In September 2025, the FASB issued ASU 2025-06, Intangibles-Goodwill and Other-Internal Use Software (Subtopic 350-40). The amendments in this ASU remove all references to project stages, and requires entities to start capitalizing software costs when (1) management has authorized and committed to funding the software project and (2) it is probable that the project will be completed and the software will be used to perform the function intended. The amendments are effective for annual reporting periods with fiscal years beginning after December 15, 2027, and interim reporting periods within those annual reporting periods. The Company expects this ASU will not have a material impact to the Company's results of operations, cash flows, or financial condition.

- Definition

Disclosure of accounting policy for revenue from contract with customer.

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- Definition

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+ Details

Leases (Tables)

3 Months Ended

Mar. 31, 2026

Leases [Abstract]

Schedule of Lease Costs

The table below presents the Company’s net lease cost and certain other information related to the Company’s leasing activities as of and for the periods indicated (dollars in thousands).


	Three Months Ended
	March 31,
Description:	2026		2025
Operating lease cost (1)	$	19,889	$	24,348
Lease cost (2)	5,305		5,685
Sublease income	(11,121)		(11,386)
Total lease cost, net (3)	$	14,073	$	18,647
Cash paid for amounts included in the measurement of operating lease liabilities	$	27,639	$	28,657
Cash receipts from sublease arrangements	$	11,359	$	11,144
Right-of-use assets obtained in exchange for new operating lease liabilities	$	25,881	$	5,071

(1)Included in operating lease cost was $8.0 million and $8.5 million for the three months ended March 31, 2026 and 2025, respectively, for costs related to subleasing activities.

(2)These amounts are primarily variable lease and nonlease costs that are not fixed at the lease commencement date or are dependent on something other than an index or a rate.

(3)The Company did not capitalize any operating lease costs during any of the periods presented.

Schedule of Supplemental Balance Sheet Information

The table below indicates where the discounted operating lease payments from the above table are classified in the accompanying Condensed Consolidated Balance Sheets (in thousands).


	March 31,		December 31,
Description:	2026		2025
Accounts payable and accrued liabilities	$	96,569	$	96,076
Operating lease liabilities	275,635		270,200
Total operating lease liabilities included in the Condensed Consolidated Balance Sheets	$	372,204	$	366,276

Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2026

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes to the Carrying Amount of Goodwill by Segment

The table below presents changes to the carrying amount of goodwill by segment during the three months ended March 31, 2026 (in thousands).


	Insights		Conferences		Consulting		Total
Balance at December 31, 2025	$	2,460,315	$	184,052	$	96,435	$	2,740,802



Foreign currency translation impact	(447)		(10)		(81)		(538)
Balance at March 31, 2026	$	2,459,868	$	184,042	$	96,354	$	2,740,264

Schedule of Amortizable Intangible Assets

The tables below present reconciliations of the carrying amounts of the Company’s finite-lived intangible assets as of the dates indicated (in thousands).


March 31, 2026	Customer Relationships		Other		Total
Gross cost at December 31, 2025	$	1,021,757	$	10,200	$	1,031,957



Foreign currency translation impact	(1,623)		—		(1,623)
Gross cost	1,020,134		10,200		1,030,334
Accumulated amortization (1)	(706,106)		(8,474)		(714,580)
Balance at March 31, 2026	$	314,028	$	1,726	$	315,754


December 31, 2025	Customer Relationships		Other		Total
Gross cost	$	1,021,757	$	10,200	$	1,031,957
Accumulated amortization (1)	(687,416)		(8,238)		(695,654)
Balance at December 31, 2025	$	334,341	$	1,962	$	336,303

(1) Finite-lived intangible assets are amortized using the straight-line method over the following periods: Customer relationships—6 to 13 years and Other—11 years.

Schedule of Estimated Future Amortization Expense by Year

The estimated future amortization expense by year for finite-lived intangible assets is presented in the table below (in thousands).


2026 (remaining nine months)	$	60,052
2027	79,460
2028	77,989
2029	77,910
2030	20,343
	$	315,754

- Definition

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-Section 50
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+ Details

Computation of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Numerator:
Net income used for calculating basic and diluted income per share	$ 222,344	$ 210,939
Denominator:
Weighted average number of common shares used in the calculation of basic income per share (in shares)	69,796	77,357
Dilutive effect of outstanding awards associated with stock-based compensation plans (in shares)	169	433
Shares used in the calculation of diluted income per share (in shares)	69,965	77,790
Basic income per share (in dollars per share)	$ 3.19	$ 2.73
Diluted income per share (in dollars per share)	$ 3.18	$ 2.71
Antidilutive securities excluded from computation of (loss) income per share (in shares)	800	200

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

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+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Derivatives and Hedging (Tables)

3 Months Ended

Mar. 31, 2026

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions

The tables below provide information regarding the Company’s outstanding derivative contracts as of the dates indicated (in thousands, except for number of contracts).

March 31, 2026

Derivative Contract Type

Number of
Contracts

Notional
Amounts

Fair Value
Asset
(Liability), Net (2)

Balance
Sheet
Line Item

Foreign currency forwards (1)

110,353

Other current assets/accrued liabilities

December 31, 2025

Derivative Contract Type

Number of Contracts

Notional
Amounts

Fair Value
Asset
(Liability), Net (2)

Balance
Sheet
Line Item

Foreign currency forwards (1)

104

427,482

230

Other current assets/accrued liabilities

(2)See Note 12 — Fair Value Disclosures for the determination of the fair values of these instruments.

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance

The table below provides information regarding amounts recognized in the accompanying Condensed Consolidated Statements of Operations for derivative contracts for the periods indicated (in thousands).


	Three Months Ended
	March 31,
Amount recorded in:	2026		2025
Interest expense, net (1)	$	—	$	4,464
Other expense (income), net (2)	1,218		(596)
Total expense, net	$	1,218	$	3,868

(1)Consists of interest expense from interest rate swap contracts.

(2)Consists of net realized and unrealized gains and losses on foreign currency forward contracts and in 2025 also included a gain on a de-designated interest rate swap.

Stock-Based Compensation

3 Months Ended

Mar. 31, 2026

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

The Company grants stock-based compensation awards as an incentive for employees and directors to contribute to the Company’s long-term success. The Company currently awards stock-settled stock appreciation rights, service-based and performance-based restricted stock units, and common stock equivalents. As of March 31, 2026, the Company had 3.9 million shares of its common stock, par value $0.0005 per share, (the “Common Stock”) available for stock-based compensation awards under the Gartner, Inc. Long-Term Incentive Plan as amended and restated in June 2023 (the “Plan”).

The tables below summarize the Company’s stock-based compensation expense by award type and expense category line item during the periods indicated (in millions).


	Three Months Ended
	March 31,
Award type	2026		2025
Stock appreciation rights	$	3.1	$	3.4
Restricted stock units	42.5		46.6
Common stock equivalents	0.3		0.2
Total (1)	$	45.9	$	50.2


	Three Months Ended
	March 31,
Expense category line item	2026		2025
Cost of services and product development	$	16.8	$	20.6
Selling, general and administrative	29.1		29.6
Total (1)	$	45.9	$	50.2

Segment Information (Tables)

3 Months Ended

Mar. 31, 2026

Segment Reporting [Abstract]

Schedule of Segment Reporting Information by Segment

The tables below present information about the Company’s reportable segments for the periods indicated (in thousands).


Three Months Ended March 31, 2026	Insights		Conferences		Consulting		Other (1)		Consolidated
Revenues	$	1,294,195	$	78,325	$	119,129	$	19,392	$	1,511,041
Less:
Personnel expenses	271,957		18,031		75,617		2,210		367,815
Product and content delivery expenses	3,630		26,756		2,939		9,475		42,800
Other expenses (2)	7,091		3,130		3,768		130		14,119
Gross contribution	1,011,517		30,408		36,805		7,577		1,086,307
Cost of services and product development - unallocated (3)									4,573
Selling, general and administrative									726,349
Depreciation and amortization									45,431


Gain from sale of divested operation									(6,138)
Interest expenses and other, net									23,680
Income before income taxes									$	292,412


Three Months Ended March 31, 2025	Insights		Conferences		Consulting		Other (1)		Consolidated
Revenues	$	1,255,569	$	72,597	$	139,706	$	66,258	$	1,534,130
Less:
Personnel expenses	278,990		17,746		79,092		10,371		386,199
Product and content delivery expenses	4,396		24,172		3,263		36,781		68,612
Other expenses (2)	6,236		3,297		3,959		530		14,022
Gross contribution	965,947		27,382		53,392		18,576		1,065,297
Cost of services and product development - unallocated (3)									6,197
Selling, general and administrative									730,308
Depreciation and amortization									50,760


Interest expenses and other, net									11,024

Income before income taxes									$	267,008

(1)Other includes the Company's Digital Markets operating segment, which was divested during the three months ended March 31, 2026. See Note 2 — Divestiture for additional information.

(2)Other expenses consists primarily of travel and entertainment and workplace expenses.

Condensed Consolidated Statements of Changes in Stockholders’ Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss, Net	Accumulated Earnings	Treasury Stock
Beginning balance at Dec. 31, 2024	$ 1,359,169	$ 82	$ 2,497,130	$ (88,333)	$ 5,993,007	$ (7,042,717)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	210,939				210,939
Other comprehensive income (loss)	20,484			20,484
Issuances under stock plans	9,766		5,872			3,894
Common share repurchases (including excise tax)	(152,672)					(152,672)
Stock-based compensation expense	50,168		50,168
Ending balance at Mar. 31, 2025	1,497,854	82	2,553,170	(67,849)	6,203,946	(7,191,495)
Beginning balance at Dec. 31, 2025	319,908	82	2,679,101	(41,015)	6,722,238	(9,040,498)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	222,344				222,344
Other comprehensive income (loss)	(4,040)			(4,040)
Issuances under stock plans	8,689		4,415			4,274
Common share repurchases (including excise tax)	(529,387)					(529,387)
Stock-based compensation expense	45,870		45,870
Ending balance at Mar. 31, 2026	$ 63,384	$ 82	$ 2,729,386	$ (45,055)	$ 6,944,582	$ (9,565,611)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References + Details

- Definition

Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

+ References

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+ Details

Equity (Tables)

3 Months Ended

Mar. 31, 2026

Stockholders' Equity Note [Abstract]

Schedule of Share Repurchase Activity

The Company’s share repurchase activity is presented in the table below for the periods indicated.


	Three Months Ended
	March 31,
	2026		2025
Number of shares repurchased (1)	3,310,253		300,745
Cash paid for repurchased shares (in thousands) (2)	$	534,637	$	162,672

Schedule of The Changes in Accumulated Other Comprehensive Loss by Component (Net Of Tax)

The tables below provide information about the changes in AOCL by component and the related amounts reclassified out of AOCL to income during the periods indicated (net of tax, in thousands) (1).

Three Months Ended March 31, 2026


	Defined Benefit Pension Plans		Foreign Currency Translation Adjustments		Total
Balance – December 31, 2025	$	(5,944)	$	(35,071)	$	(41,015)
Other comprehensive income (loss) activity during the period:
Change in AOCL before reclassifications to income	(397)		(3,853)		(4,250)
Reclassifications from AOCL to income (2)	210		—		210
Other comprehensive income (loss), net	(187)		(3,853)		(4,040)
Balance – March 31, 2026	$	(6,131)	$	(38,924)	$	(45,055)

Three Months Ended March 31, 2025


	Interest Rate Swaps		Defined Benefit Pension Plans		Foreign Currency Translation Adjustments		Total
Balance – December 31, 2024	$	(9,800)	$	(5,214)	$	(73,319)	$	(88,333)
Other comprehensive income (loss) activity during the period:
Change in AOCL before reclassifications to income	—		—		17,046		17,046
Reclassifications from AOCL to income (2), (3)	3,390		48		—		3,438
Other comprehensive income (loss), net	3,390		48		17,046		20,484
Balance – March 31, 2025	$	(6,410)	$	(5,166)	$	(56,273)	$	(67,849)

(1)Amounts in parentheses represent debits (deferred losses).

(2)The reclassifications related to defined benefit pension plans were recorded in Other (expense) income, net.

Stock-Based Compensation - Schedule of Stock-based Compensation Expense by Award Type and Expense Category (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 45.9	$ 50.2
Cost of services and product development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	16.8	20.6
Selling, general and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	29.1	29.6
Stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	3.1	3.4
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	42.5	46.6
Common stock equivalents
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	0.3	0.2
Retirement Eligible Employees Equity Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 23.5	$ 28.0

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

Cover Page - shares	3 Months Ended
Cover Page - shares	Mar. 31, 2026	May 01, 2026
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2026
Document Transition Report	false
Entity File Number	1-14443
Entity Registrant Name	Gartner, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-3099750
Entity Address, Address Line One	P.O. Box 10212
Entity Address, Address Line Two	56 Top Gallant Road
Entity Address, City or Town	Stamford,
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06902-7700
City Area Code	203
Local Phone Number	964-0096
Title of 12(b) Security	Common Stock, $.0005 par value per share
Trading Symbol	IT
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		66,951,889
Entity Central Index Key	0000749251
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	Q1
Amendment Flag	false
Current Fiscal Year End Date	--12-31

Fair Value Disclosures (Tables)

3 Months Ended

Mar. 31, 2026

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured to Fair Value on Recurring Basis

The table below presents the fair values of certain financial assets and liabilities that are measured at fair value on a recurring basis in the Company's financial statements (in thousands).


Description	March 31, 2026		December 31, 2025
Assets:
Values based on Level 1 inputs:
Deferred compensation plan assets (1)	$	23,441	$	19,188
Total Level 1 inputs	23,441		19,188
Values based on Level 2 inputs:
Deferred compensation plan assets (1)	150,417		155,949
Foreign currency forward contracts (2)	213		1,169

Total Level 2 inputs	150,630		157,118
Total Assets	$	174,071	$	176,306
Liabilities:
Values based on Level 2 inputs:
Deferred compensation plan liabilities (1)	$	178,390	$	178,331
Foreign currency forward contracts (2)	212		939
Total Level 2 inputs	178,602		179,270
Total Liabilities	$	178,602	$	179,270

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments


	Carrying Amount				Fair Value
	March 31,		December 31,		March 31,		December 31,
Description	2026		2025		2026		2025
2028 Notes	$	796,888	$	796,563	$	787,152	$	798,080
2029 Notes	596,811		596,578		564,276		578,760
2030 Notes	795,264		795,024		730,344		759,224
2031 Notes	346,708		346,564		341,674		351,869
2035 Notes	445,498		445,411		426,686		450,657
Total	$	2,981,169	$	2,980,140	$	2,850,132	$	2,938,590