XML 120 R67.htm IDEA: XBRL DOCUMENT
v3.24.3

STOCK-BASED COMPENSATION (Tables) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023
STOCK-BASED COMPENSATION |  |
SCHEDULE OF OPTION ACTIVITY UNDER 2021 PLAN AND 2018 PLAN | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ | ​ |  | Weighted- |  | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Average | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Remaining | ​ | Aggregate | ​
​ | ​ | ​ | ​ | Weighted-Average | ​ | Contractual Term | ​ | Intrinsic Value | ​
​ |  | Options |  | Exercise Price |  | (in years) |  | (in thousands) | ​
Outstanding at December 31, 2023 |  | 5,230,344 | ​ | $ | 13.66 |  | 8.16 | ​ | $ | 49,728 | ​
Granted |  | 1,489,191 | ​ | ​ | 19.70 |  | ​ | ​ | ​ |  | ​
Exercised |  | (265,482) | ​ | ​ | 4.67 |  |  | ​ |  |  | ​
Cancelled/Forfeited |  | (2,739,949) | ​ | ​ | 18.84 |  |  | ​ |  |  | ​
Outstanding at September 30, 2024 |  | 3,714,104 | ​ | $ | 12.91 | ​ | 4.98 | ​ | $ | 12 | ​
Vested and exercisable at September 30, 2024 |  | 2,791,181 | ​ | ​ | 12.06 | ​ | 3.95 | ​ | ​ | 12 | ​
| The following table summarizes the option activity under the 2021 Plan and 2018 Plan for the year ended December 31, 2023:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ | ​ |  | Weighted- |  | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Average | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Remaining | ​ | Aggregate | ​
​ | ​ | ​ | ​ | Weighted-Average | ​ | Contractual Term | ​ | Intrinsic Value | ​
​ |  | Options |  | Exercise Price |  | (in years) |  | (in thousands) | ​
Vested and expected to vest at December 31, 2022 |  | 4,110,219 | ​ | $ | 9.23 |  | 8.46 | ​ | $ | 82,490 | ​
Granted |  | 1,546,001 | ​ | ​ | 22.85 |  | ​ | ​ | ​ |  | ​
Exercised |  | (338,987) | ​ | ​ | 2.91 |  |  | ​ |  |  | ​
Cancelled/Forfeited |  | (86,889) | ​ | ​ | 9.62 |  |  | ​ |  |  | ​
Outstanding at December 31, 2023 |  | 5,230,344 | ​ | $ | 13.66 | ​ | 8.16 | ​ | $ | 49,728 | ​
Vested and exercisable at December 31, 2023 |  | 2,157,378 | ​ | ​ | 11.24 | ​ | 7.81 | ​ | ​ | 25,152 | ​
Vested and expected to vest at December 31, 2023 |  | 5,230,344 | ​ | $ | 13.66 | ​ | 8.16 | ​ | $ | 49,728 | ​
SCHEDULE OF UNVESTED RESTRICTED STOCK UNIT ACTIVITY | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  |  |  | Weighted- | ​
​ | ​ | ​ | ​ | Average Grant | ​
​ | ​ | ​ | ​ | Date Fair Value | ​
​ | ​ | Units | ​ | Per Unit | ​
Unvested restricted stock units as of December 31, 2023 |  | 21,968 |  | $ | 22.26 | ​
Granted |  | — | ​ | ​ | — | ​
Vested |  | (5,492) | ​ |  | 21.30 | ​
Forfeited |  | (16,476) | ​ |  | 22.58 | ​
Unvested restricted stock units as of September 30, 2024 |  | — | ​ | $ | — | ​
| ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  |  |  | Weighted- | ​
​ | ​ | ​ | ​ | Average Grant | ​
​ | ​ | ​ | ​ | Date Fair Value | ​
​ | ​ | Units | ​ | Per Unit | ​
Unvested restricted stock units as of December 31, 2022 |  | 28,881 |  | $ | 21.62 | ​
Granted |  | 3,000 | ​ | ​ | 24.58 | ​
Vested |  | (9,913) | ​ |  | 21.10 | ​
Forfeited |  | — | ​ |  | — | ​
Unvested restricted stock units as of December 31, 2023 |  | 21,968 | ​ | $ | 22.26 | ​
SCHEDULE OF STOCK-BASED COMPENSATION EXPENSE | Stock-based compensation expense recognized for all equity awards has been reported in the statements of operations and comprehensive loss as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended September 30, |  | Nine Months Ended September 30, | ​
​ |  | 2024 |  | 2023 |  | 2024 |  | 2023 | ​
Research and development | ​ | $ | 458 | ​ | $ | 1,817 | ​ | $ | 4,987 | ​ | $ | 4,798 | ​
General and administrative | ​ | ​ | 1,545 | ​ | ​ | 1,420 | ​ | ​ | 5,081 | ​ | ​ | 3,857 | ​
Total | ​ | $ | 2,003 | ​ | $ | 3,237 | ​ | $ | 10,068 | ​ | $ | 8,655 | ​
​ Stock-based compensation expense by type of award included within the consolidated statements of operations and comprehensive income (loss) was as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended September 30, |  | Nine Months Ended September 30, | ​
​ |  | 2024 |  | 2023 |  | 2024 |  | 2023 | ​
Stock options | ​ | $ | 2,014 | ​ | $ | 3,140 | ​ | $ | 9,890 | ​ | $ | 8,369 | ​
Restricted stock awards and units | ​ | ​ | — | ​ | ​ | 52 | ​ | ​ | 116 | ​ | ​ | 151 | ​
Employee stock purchase plan awards | ​ | ​ | (11) | ​ | ​ | 45 | ​ | ​ | 62 | ​ | ​ | 135 | ​
Total | ​ | $ | 2,003 | ​ | $ | 3,237 | ​ | $ | 10,068 | ​ | $ | 8,655 | ​
​ | Stock-based compensation expense recognized for stock option grants has been reported in the statements of operations and comprehensive loss as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended December 31, | ​
​ |  | 2023 |  | 2022 | ​
Research and development | ​ | $ | 6,621 | ​ | $ | 2,129 | ​
General and administrative | ​ | ​ | 5,285 | ​ | ​ | 3,347 | ​
Total | ​ | $ | 11,906 | ​ | $ | 5,476 | ​
​ Stock-based compensation expense by type of award included within the consolidated statements of operations and comprehensive (loss) income was as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended December 31, | ​
​ |  | 2023 |  | 2022 | ​
Stock options | ​ | $ | 11,494 | ​ | $ | 5,316 | ​
Employee stock purchase plan awards | ​ | ​ | 211 | ​ | ​ | 62 | ​
Restricted stock awards and units | ​ | ​ | 201 | ​ | ​ | 98 | ​
Total | ​ | $ | 11,906 | ​ | $ | 5,476 | ​
​

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 -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_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 -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_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 -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -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