XML 51 R36.htm IDEA: XBRL DOCUMENT v3.22.4

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2022

Share-Based Payment Arrangement [Abstract]

Summary of restricted stock activity

The following table summarizes the Company’s restricted stock unit activity:

			Shares						Weighted Average Grant Date Fair Value
Unvested as of December 31, 2021			440,079						$	41.86
Issued			676,828						14.54
Vested			(104,803)						44.89
Forfeited			(268,154)						22.08
Unvested as of December 31, 2022			743,950						$	23.07

Summary of stock option activity

The following table summarizes the Company’s stock option activity:

			Number of Shares						Weighted Average Exercise Price per Share						Weighted Average Remaining Contractual Term						Aggregate Intrinsic Value
															(In years)						(In thousands)
Outstanding as of December 31, 2021			6,468,501						$	16.92
Granted			3,969,302						9.23
Exercised			(265,662)						3.04												$	850
Cancelled or Forfeited			(1,334,113)						16.64
Outstanding as of December 31, 2022			8,838,028						$	13.93					8.26						$	514
Exercisable as of December 31, 2022			3,315,240						$	14.86					7.50						$	95
Vested and expected to vest as of December 31, 2022			8,635,022						$	13.90					8.30						$	497

Schedule of fair value of stock option awards on the grant date using the Black-Scholes option valuation model

			Year Ended December 31,
			2022						2021
Risk-free interest rate			2.52		%				0.86		%
Expected term (in years)			6.07						6.08
Expected volatility			89.20		%				85.52		%
Expected dividend yield			—		%				—		%
Weighted average grant-date fair value per share			$	6.65					$	27.58

Summary of stock-based compensation expense

Stock-based compensation expense was allocated as follows (in thousands):

			Year Ended December 31,
			2022						2021
Research and development			$	9,972					$	9,350
General and administrative			18,621						13,343
Total stock-based compensation expense			$	28,593					$	22,693

X

- References

No definition available.

+ Details

Name:	us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

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

X

- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ 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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

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