XML 50 R38.htm IDEA: XBRL DOCUMENT v3.25.3

Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2025

Schedule Of Share Based Compensation Arrangements By Share Based Paymen tAward [Line Items]

Summary of the Stock Option Activity

The stock option activity is summarized in the following table:

		Number of Option Shares				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (Years)				Aggregate Intrinsic Value (in millions)
Outstanding as of December 31, 2024			16,687,129			$	2.40
Replacement awards(1)			1,747,622				4.36
Exercised			(10,272,027	)			1.20
Cancelled/ Forfeited			(432,952	)			2.66
Outstanding as of September 30, 2025			7,729,772			$	4.42				5.85			$	441.20
Exercisable as of September 30, 2025			5,550,278			$	5.21				4.78			$	312.42
Exercisable and expected to vest as of September 30, 2025			7,729,772			$	4.42				5.85			$	441.20

(1)In connection with certain acquisitions, the Company converted certain outstanding stock options of the acquirees into stock options to acquire common stock of the Company, for which $11.3 million of the fair value was attributed to pre-combination services and was allocated to purchase consideration.

Summary of Performance Share Unit ("PSU") Activity Based on Awards at Target

The PSU activity is summarized in the following table, based on awards at target:

		Number of PSUs				Weighted Average Grant Date Fair Value				Weighted Average Remaining Contractual Term (Years)
Outstanding as of December 31, 2024			3,972,257			$	16.17
Granted			2,757,511				36.48
Vested			(619,874	)			16.77
Forfeited			(456,445	)			15.08
Outstanding as of September 30, 2025			5,653,449			$	26.10				1.84
Expected to vest after September 30, 2025(1)			12,929,029			$	24.27				1.79

Represents the number of PSUs expected to vest, which may exceed the target number of shares, based on the Company’s probability assessment of expected performance during the performance period.

Summary of Stock-based Compensation Expenses for Stock Options and Unvested Common Stock

Total stock-based compensation expense for stock option awards, RSUs, PSUs, and restricted stock which are included in the condensed consolidated financial statements, is as follows (in thousands):

		Three Months Ended September 30,								Nine Months Ended September 30,
		2025				2024				2025				2024
Cost of revenue		$	4,247			$	1,332			$	7,125			$	3,392
Research and development			31,766				13,907				125,392				37,840
Sales and marketing			6,560				2,929				16,488				8,157
General and administrative			30,372				6,399				56,361				18,218
Stock-based compensation, net of amounts capitalized			72,945				24,567				205,366				67,607
Capitalized stock-based compensation—Property and equipment, net     and Intangible assets, net			1,678				1,468				3,681				4,214
Total stock-based compensation		$	74,623			$	26,035			$	209,047			$	71,821

Summary of Unrecognized Stock-Based Compensation

A summary of the Company’s remaining unrecognized compensation expense and the weighted-average remaining amortization period as of September 30, 2025, related to its non-vested RSUs, PSUs, restricted stock, and stock option awards is presented below (in millions, except time period amounts):

		Unrecognized Expense				Weighted- Average Amortization Period (Years)
Restricted stock units		$	274.3				2.9
Performance-based restricted stock units			237.9				2.1
Restricted stock			142.6				4.5
Stock options			47.5				3.0

Stock Options [Member]

Schedule Of Share Based Compensation Arrangements By Share Based Paymen tAward [Line Items]

Summary of Share Based Payment Award Stock Options Valuation Assumptions

The assumptions used to estimate the fair value of stock options are as follows:

		Three Months Ended September 30,								Nine Months Ended September 30,
		2025				2024				2025				2024
Risk-free interest rate			—	%			—	%			4.07	%			4.31	%
Expected term (in years)			—				—				5.89				6.00
Expected volatility			—	%			—	%			86.79	%			79.33	%
Dividend yield			—	%			—	%			—	%			—	%

Restricted Stock Units Outstanding [Member]

Schedule Of Share Based Compensation Arrangements By Share Based Paymen tAward [Line Items]

Summary of Restricted Stock Unit ("RSU") and Restricted Stock Activity

The Company’s RSU activity is summarized in the following table:

		Number of RSUs				Weighted Average Grant Date Fair Value				Weighted Average Remaining Contractual Term (Years)
Outstanding as of December 31, 2024			14,509,717			$	9.54
Granted			6,409,003				36.92
Vested			(5,952,489	)			12.04
Forfeited			(1,138,230	)			11.77
Outstanding as of September 30, 2025			13,828,001			$	20.96				2.46
Expected to vest after September 30, 2025			13,828,001			$	20.96				2.46

Restricted Stock [Member]

Schedule Of Share Based Compensation Arrangements By Share Based Paymen tAward [Line Items]

Summary of Restricted Stock Unit ("RSU") and Restricted Stock Activity

The restricted stock activity is summarized in the following table:

		Number of Restricted Stock				Weighted Average Grant Date Fair Value				Weighted Average Remaining Contractual Term (Years)
Outstanding as of December 31, 2024			—			$	—
Replacement awards(1)			6,176,959				40.34
Vested			(1,927,662	)			40.34
Outstanding as of September 30, 2025			4,249,297				40.34				4.51
Expected to vest after September 30, 2025			4,249,297			$	40.34				4.51

In connection with certain acquisitions, the Company converted certain outstanding restricted stock of the acquirees into restricted stock of the Company, for which $48.1 million of the fair value was attributed to pre-combination services and was allocated to purchase consideration.

Performance Based Restricted Stock Units [Member]

Schedule Of Share Based Compensation Arrangements By Share Based Paymen tAward [Line Items]

Summary of Share Based Payment Award Stock Options Valuation Assumptions

The assumptions used to estimate the fair value of PSUs subject to the stock price hurdle are as follows:

		Three Months Ended September 30,								Nine Months Ended September 30,
		2025				2024				2025				2024
Risk-free interest rate			—	%			—	%			3.79	%			4.86	%
Contractual term (in years)			—				—				1.72				2.69
Expected volatility			—	%			—	%			104.32	%			85.00	%
Dividend yield			—	%			—	%			—	%			—	%

X

- Definition

Schedule of share based compensation arrangements by share based payment award line items.

+ References

No definition available.

+ Details

Name:	ionq_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymenTawardLineItems
Namespace Prefix:	ionq_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the changes in outstanding nonvested restricted stock units.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Subparagraph (f)(2)
-Name Accounting Standards Codification
-Paragraph 2
-Section 50
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of number and weighted-average grant date fair value for nonvested performance shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Subparagraph (c)
-Paragraph 2
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationPerformanceSharesAwardUnvestedActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=ionq_PerformanceBasedRestrictedStockUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: