Stock Based Awards and Other Equity Instruments (Tables)

6 Months Ended

Jun. 30, 2024

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Amount of Stock-Based Compensation Expense Related to Income Tax Benefit

The following table presents the amount of stock-based compensation expense and the related income tax benefit included in our unaudited condensed consolidated statements of operations during the periods presented:

	Three months ended						Six months ended
	June 30,						June 30,
	2024			2023			2024			2023
	(in millions)						(in millions)
Total stock-based compensation expense	$	34		$	25		$	61		$	48
Income tax benefit from stock-based compensation		(7	)		(5	)		(12	)		(10	)
Total stock-based compensation expense, net of tax	$	27		$	20		$	49		$	38

Summary of Stock Option Activity

A summary of our stock option activity, consisting of service-based non-qualified stock options, is presented below:

				Weighted		Weighted
				Average		Average
				Exercise		Remaining		Aggregate
	Options			Price Per		Contractual		Intrinsic
	Outstanding			Share		Life		Value
	(in thousands)					(in years)		(in millions)
Options outstanding at December 31, 2023		3,927		$	35.56
Granted		42			25.50
Exercised (1)		(80	)		24.36
Canceled or expired		(234	)		48.13
Options outstanding at June 30, 2024		3,655		$	34.88		4.7	$	—
Exercisable as of June 30, 2024		2,900		$	37.90		3.8	$	—
Vested and expected to vest after June 30, 2024 (2)		3,655		$	34.88		4.7	$	—

(1)Inclusive of approximately 67,000 stock options withheld due to net share settlement to satisfy required employee tax withholding requirements. Potential shares which had been convertible under stock options that were withheld under net share settlement remain in the authorized but unissued pool under the Tripadvisor, Inc. 2023 Stock and Annual Incentive Plan (the “2023 Plan”) and can be reissued by the Company. Total payments for the employees’ tax obligations to the taxing authorities due to net share settlements are reflected as a financing activity within the consolidated statements of cash flows.

(2)The Company accounts for forfeitures as they occur, rather than estimate expected forfeitures as allowed under GAAP and therefore does not include a forfeiture rate in our vested and expected to vest calculation unless necessary for a performance condition award.

Summary of RSU Activity

A summary of our RSUs activity, consisting of service-based vesting terms, is presented below:

				Weighted
				Average
				Grant-		Aggregate
	RSUs			Date Fair		Intrinsic
	Outstanding			Value Per Share		Value
	(in thousands)					(in millions)
Unvested RSUs outstanding as of December 31, 2023		11,520		$	23.06
Granted		5,314			26.49
Vested and released (1)		(2,859	)		23.89
Canceled		(907	)		24.31
Unvested RSUs outstanding as of June 30, 2024 (2)		13,068		$	24.19	$	233

(1)Inclusive of approximately 620,000 RSUs withheld due to net share settlement to satisfy required employee tax withholding requirements. Potential shares which had been convertible under RSUs that were withheld under net share settlement remain in the authorized but unissued pool under the 2023 Plan and can be reissued by the Company. Total payments for the employees’ tax obligations to the taxing authorities due to net share settlements are reflected as a financing activity within the consolidated statements of cash flows.

(2)The Company accounts for forfeitures as they occur, rather than estimate expected forfeitures as allowed under GAAP and therefore does not include a forfeiture rate in our vested and expected to vest calculation unless necessary for a performance condition award.

PSUs and MSUs

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Summary of RSU Activity

A summary of our performance-based RSUs ("PSUs") and market-based RSUs (“MSUs”) activity is presented below:

	PSUs (1)			MSUs (2)
		Weighted			Weighted
		Average			Average
		Grant-	Aggregate		Grant-	Aggregate
		Date Fair	Intrinsic		Date Fair	Intrinsic
	Outstanding	Value Per Share	Value	Outstanding	Value Per Share	Value
	(in thousands)		(in millions)	(in thousands)		(in millions)
Unvested and outstanding as of December 31, 2023	519	$18.45		572	$10.35
Granted	575	27.03		—	—
Canceled	(157)	21.69		(81)	9.26
Unvested and outstanding as of June 30, 2024	937	$23.17	$17	491	$10.53	$9

(1)Represents PSUs awarded in February 2023 and March 2024. The February 2023 PSU awards provide for vesting in two equal annual installments on each of December 31, 2024 and December 31, 2025, if and to the extent the Company achieves pre-determined revenue and adjusted EBITDA metrics (each weighted 50%) established by the Compensation Committee and Section 16 Committee of its Board of Directors (jointly, the "Compensation Committees"). The March 2024 PSU awards provide for vesting in two equal annual installments on each of December 31, 2025 and December 31, 2026, if and to the extent the Company achieves pre-determined revenue and adjusted EBITDA metrics (each weighted 50%) established by the Compensation Committees. The estimated grant-date fair values per PSU were measured based on the quoted price of our common stock at the date of grant, calculated upon the establishment of performance targets, and will be amortized on a straight-line basis over the requisite service period. Based upon actual attainment relative to the target financial metrics, employees have the ability to receive up to 200% of the target number originally granted, or to be issued none at all. Probable outcome for performance-based awards is updated based upon changes in actual and forecasted operating results or expected achievement of performance goals, as applicable, and the impact of modifications, if any.

(2)MSUs shall vest three years from grant date, generally with 25% vesting if the weighted-average stock price over a 30 day trading period during the vesting period is equal to or greater than $35.00 but less than $45.00, 50% vesting if equal to or greater than $45.00 but less than $55.00; and 100% vesting if equal to or greater than $55.00, subject to continuous employment with, or performance of services for, the Company. A Monte-Carlo simulation model, which simulated the present value of the potential outcomes of future stock prices was used to calculate the grant-date fair value of our MSU awards. The estimated grant-date fair value of these awards is amortized on a straight-line basis over the requisite service period and is not adjusted based on the actual number of awards that ultimately vest.