Gartner (IT) 8-K Regulation FD Disclosure

Exhibit 99.1

In order to provide a basis for comparability to historical data, Gartner, Inc. (“Gartner”, “we” or us”) is today providing recast reportable business segment results for the four quarters of 2016 as well as the first quarter of 2017, for each of Gartner and CEB Inc. (“CEB”), as well as combined company information showing the combined results of Gartner and CEB during those periods, which occurred prior to Gartner’s acquisition of CEB on April 5, 2017.

Following our acquisition of CEB, Gartner is reporting the results of four business segments, which are defined as follows:

· Research– includes the results of our previous Gartner Research segment and the results of CEB’s core subscription-based best practice and decision support research activities. In addition, Research now includes our Strategic Advisory Services (“SAS”) business, which was previously included in the Consulting segment.

· Consulting- includes our previous Gartner Consulting segment except, as noted above, the results of our SAS business are now included in the Research segment.

· Events- includes the results of our previous Gartner Events segment and the results of CEB’s former Evanta business and destination event activities.

· Talent Assessment & Other– this is a new segment for Gartner and it includes CEB’s previously disclosed Talent Assessment business as well as certain CEB non-subscription based talent products and services.

The information set forth below recasts certain historical GAAP and non-GAAP operating results for each of Gartner and CEB on the basis of these four segments during the four quarters of 2016 as well as the first quarter of 2017. In addition, the information set forth below includes “Combined Company” numbers, which are the sum of the results of Gartner and CEB for each line item during each period, notwithstanding the fact that the acquisition was not completed until after those periods.

The calculation of Combined Company numbers excludes certain adjustments with respect to presentation of pro forma financial information required under U.S. GAAP and the rules and regulations of the SEC. Accordingly, the Combined Company numbers are non-GAAP. We believe Combined Company numbers are useful in comparing our performance following the CEB acquisition with our and CEB’s independent performances prior to our acquisition of CEB. The Combined Company numbers should be read together with our and CEB’s historical financial statements included in our and their respective quarterly reports on Form 10-Q and annual reports on Form 10-K, and the pro forma financial statements included in Exhibit 99.1 to our Current Report on Form 8-K filed with the SEC on April 6, 2017 and footnote 5 to our Current Report on Form 10-Q for the period ending June 30, 2017.

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Adjusted Historical Recast Segments

	GAAP Revenue				Deferred Revenue Fair Value Adjustment				Adjusted Revenue						GAAP Direct Expense						Adjusted Gross Contribution							Adjusted Contribution Margin
	Gartner		CEB		Gartner		CEB		Gartner		CEB		Combined Company		Gartner		CEB (1)		Combined Company		Gartner		CEB			Combined Company		Combined Company
Three Months Ended 03/31/17
Research	$	511,306	$	144,233	$	143	$	—	$	511,449	$	144,233	$	655,682	$	160,192	$	41,800	$	201,992	$	351,257	$	102,433		$	453,690		69	%
Consulting		78,594		—		—		—		78,594		—		78,594		54,658		—		54,658		23,936		—			23,936		30	%
Events		35,269		1,180		—		60		35,269		1,240		36,509		21,702		3,320		25,022		13,567		(2,080	)		11,487		31	%
Talent Assessment & Other		—		68,837		—		—		—		68,837		68,837		—		31,917		31,917		—		36,920			36,920		54	%
TOTAL	$	625,169	$	214,250	$	143	$	60	$	625,312	$	214,310	$	839,622	$	236,552	$	77,037	$	313,589	$	388,760	$	137,273		$	526,033		63	%
Three Months Ended 12/31/16
Research	$	485,844	$	155,391	$	258	$	—	$	486,102	$	155,391	$	641,493	$	154,509	$	45,981	$	200,490	$	331,593	$	109,410		$	441,003		69	%
Consulting		81,058		—		—		—		81,058	$	—		81,058		62,433		—		62,433		18,625		—			18,625		23	%
Events		136,315		20,865		—		2,653		136,315	$	23,518		159,833		63,234		9,416		72,650		73,081		14,102			87,183		55	%
Talent Assessment & Other		—		77,894		—		—		—	$	77,894		77,894		—		32,042		32,042		—		45,852			45,852		59	%
TOTAL	$	703,217	$	254,150	$	258	$	2,653	$	703,475	$	256,803	$	960,278	$	280,176	$	87,439	$	367,615	$	423,299	$	169,364		$	592,663		62	%
Three Months Ended 09/30/16
Research	$	466,877	$	151,759	$	429	$	—	$	467,306	$	151,759	$	619,065	$	144,231	$	42,429	$	186,660	$	323,075	$	109,330		$	432,405		70	%
Consulting		73,707		—		—		—		73,707		—		73,707		55,492		—		55,492		18,215		—			18,215		25	%
Events		33,475		1,644		—		1,106		33,475		2,750		36,225		18,946		4,446		23,392		14,529		(1,696	)		12,833		35	%
Talent Assessment & Other		—		76,441		—		—		—		76,441		76,441		—		31,449		31,449		—		44,992			44,992		59	%
TOTAL	$	574,059	$	229,844	$	429	$	1,106	$	574,488	$	230,950	$	805,438	$	218,669	$	78,324	$	296,993	$	355,819	$	152,626		$	508,445		63	%
Three Months Ended 06/30/16
Research	$	456,690	$	152,221	$	—	$	—	$	456,690	$	152,221	$	608,911	$	138,069	$	46,740	$	184,809	$	318,621	$	105,481		$	424,102		70	%
Consulting		86,548		—		—		—		86,548		—		86,548		58,207		—		58,207		28,341		—			28,341		33	%
Events		66,760		11,416		—		8,544		66,760		19,960		86,720		30,698		5,193		35,891		36,062		14,767			50,829		59	%
Talent Assessment & Other		—		78,965		—		—		—		78,965		78,965		—		35,089		35,089		—		43,876			43,876		56	%
TOTAL	$	609,998	$	242,602	$	—	$	8,544	$	609,998	$	251,146	$	861,144	$	226,974	$	87,022	$	313,996	$	383,024	$	164,124		$	547,148		64	%
Three Months Ended 03/31/16
Research	$	447,590	$	149,673	$	—	$	774	$	447,590	$	150,447	$	598,037	$	134,581	$	42,948	$	177,529	$	313,009	$	107,499		$	420,508		70	%
Consulting		77,621		—		—		—		77,621		—		77,621		53,066		—		53,066		24,555		—			24,555		32	%
Events		32,055		52		—		—		32,055		52		32,107		19,072		586		19,658		12,983		(534	)		12,449		39	%
Talent Assessment & Other		—		73,473		—		—		—		73,473		73,473		—		32,660		32,660		—		40,813			40,813		56	%
TOTAL	$	557,266	$	223,198	$	—	$	774	$	557,266	$	223,972	$	781,238	$	206,719	$	76,194	$	282,913	$	350,547	$	147,778		$	498,325		64	%

(1) - Certain items have been reclassified to conform to Gartner’s direct expense and segment presentation.

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Reconciliation of GAAP Operating income to Combined Adjusted EBITDA(a):

	Three Months Ended							Three Months Ended							Three Months Ended						Three Months Ended						Three Months Ended
	31-Mar-17							31-Dec-16							30-Sep-16						30-Jun-16						31-Mar-16
	Gartner		CEB			Combined Company		Gartner		CEB			Combined Company		Gartner		CEB		Combined Company		Gartner		CEB		Combined Company		Gartner		CEB		Combined Company
Operating income	$	53,514	$	(10,537	)	$	42,977	$	108,687	$	(41,429	)	$	67,258	$	48,726	$	17,562	$	66,288	$	83,299	$	14,578	$	97,877	$	64,429	$	16,125	$	80,554
Adjustments:														—						—						—						—
Stock-based compensation expense (b)		22,576		5,238			27,814		10,533		5,706			16,239		9,520		4,893		14,413		11,112		5,006		16,118		15,495		4,218		19,713
Depreciation, accretion, and amortization (c)		16,553		17,131			33,684		15,986		25,385			41,371		15,776		24,900		40,676		15,258		26,265		41,523		15,038		25,626		40,664
Amortization of pre-acquisition deferred revenues (d)		143		60			203		258		2,653			2,911		429		1,106		1,535				8,544		8,544				774		774
Acquisition and integration charges and other nonrecurring items (e)		13,272		4,243			17,515		9,641		1,735			11,376		16,556		840		17,396		8,033		3,662		11,695		8,368		1,457		9,825
Other charges (f)				19,736			19,736				77,608			77,608				10,368		10,368				6,460		6,460				4,758		4,758
Adjusted EBITDA	$	106,058	$	35,871		$	141,929	$	145,105	$	71,658		$	216,763	$	91,007	$	59,669	$	150,676	$	117,702	$	64,515	$	182,217	$	103,330	$	52,958	$	156,288

(a) Adjusted EBITDA is based on GAAP operating income adjusted for certain normalizing adjustments.

(b) Consists of charges for stock-based compensation awards.

(c) Includes depreciation expense, accretion on excess facilities accruals, and amortization of intangibles. The depreciation and amortization amounts do not include any fair value adjustments as a result of the acquisition.

(d) Consists of the amortization of non-cash fair value adjustments on pre-acquisition deferred revenues. The majority of the pre-acquisition deferred revenue is recognized ratably over the remaining period of the underlying revenue contract.

(e) Consists of incremental and directly-related charges related to acquisitions and other non-recurring items.

(f) Primarily consists of restructuring costs, real estate and business transformation costs, equity investment losses and non-operating foreign currency impact related to the acquired CEB business

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