Debt

12 Months Ended

Dec. 31, 2025

Debt Disclosure [Abstract]

Debt

Debt

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

	December 31,
Description	2025		2024
2024 Credit Agreement - Revolving credit facility (1)	$	—	$	274,400
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		—
5.60% Senior Notes due 2035 (“2035 Notes”)	450,000		—
Other (2)	5,000		5,000
Principal amount outstanding (3)	3,005,000		2,479,400
Less: Deferred financing fees and unamortized discounts (4)	(23,326)		(19,485)
Net balance sheet carrying amount	$	2,981,674	$	2,459,915

(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 December 31, 2025.

(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 expects to repay the loan in 2026.

(3)The weighted average annual effective rate on the Company’s outstanding debt for 2025, including the effects of its interest rate swaps discussed below, was 4.66%.

(4)Deferred financing fees and unamortized discounts and are being amortized to Interest expense 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 $750.0 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.

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 December 31, 2025, the applicable all-in margin on the revolving facility was 1.350% (including the credit spread adjustment). The contractual annualized interest rate as of December 31, 2025 on the 2024 Credit Agreement was 5.35%, which consisted of Term Secured Overnight Financing Rate (“SOFR”) of 4.00% plus a margin of 1.35%. 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.

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. Subsidiaries of the Company are not required to guarantee obligations under the facility, unless such subsidiaries guarantee indebtedness in excess of a threshold set out in the 2024 Credit Agreement, subject to certain limitations and exceptions.

The 2024 Credit Agreement contains customary events of default that include, among others, non-payment of principal, interest or fees, material inaccuracy of representations and warranties, violation of covenants, cross defaults to certain other indebtedness, bankruptcy and insolvency events, ERISA defaults, material judgments, and events constituting a change of control. The occurrence of an event of default allows the lenders to terminate their obligations to lend under the 2024 Credit Agreement and could result in the acceleration of the Company’s obligations under the facility.

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 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.

Gartner 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 pursuant to an indenture, dated as of June 18, 2021 (the “2029 Note Indenture”), among the Company, the guarantors party thereto and U.S. Bank National Association, as trustee.

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 Note 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 pursuant to an indenture, dated as of September 28, 2020 (the “2030 Note Indenture”), among the Company, the guarantors party thereto and U.S. Bank National Association, as trustee.

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 pursuant to an indenture, dated as of June 22, 2020 (the “2028 Note Indenture”), among the Company, the guarantors party thereto and U.S. Bank National Association, as trustee.

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.

Interest Rate Swap

Prior to September 30, 2025, the Company had one fixed-for-floating interest rate swap contract with a notional value of $350.0 million. Under the contract, the Company paid a base fixed rate of 2.98% and in return received a floating Term SOFR base rate on 30-day notional borrowings. The swap contract matured in September 2025.