XML 41 R33.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Stock-based Compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
Share-Based Payment Arrangement [Abstract] |
Assumptions Used To Estimate Fair Value of Options | The assumptions used to estimate fair value and the resulting grant date fair values are as follows:
|  | Employee |  |  | Non-employee |
|  | Years Ended December 31, |  |  | Years Ended December 31, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Weighted average expected volatility |  |  | 80.94 | % |  |  | 74.77 | % |  |  | 83.83 | % |  |  | 80.12 | %
Weighted average risk-free interest rate |  |  | 4.04 | % |  |  | 3.98 | % |  |  | 4.26 | % |  |  | 3.89 | %
Weighted average expected term (in years) |  |  | 6.02 |  |  |  | 6.04 |  |  |  | 5.50 |  |  |  | 5.50 |
Schedule of Share-based Compensation, Stock Options, Activity | The activity for the 2014 Plan, 2024 Plan and 2015 Plan for the years ended December 31, 2024 is summarized as follows:
|  | Number of Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Life (in years) |  |  | Aggregate Intrinsic Value ($000) |
Outstanding — December 31, 2023 |  |  | 1,867,795 |  |  | $ | 10.72 |  |  |  | 6.10 |  |  | $ | 184 |
Granted |  |  | 1,070,060 |  |  | $ | 1.84 |  |  |  |  |  |  |
Forfeited/expired |  |  | (32,826 | ) |  | $ | 35.93 |  |  |  |  |  |  |
Outstanding — December 31, 2024 |  |  | 2,905,029 |  |  | $ | 7.16 |  |  |  | 6.62 |  |  | $ | — |
Exercisable — December 31, 2024 |  |  | 1,746,457 |  |  | $ | 10.60 |  |  |  | 5.14 |  |  | $ | — |
Vested or expected to vest —December 31, 2024 |  |  | 2,905,029 |  |  | $ | 7.16 |  |  |  | 6.62 |  |  | $ | — |
Schedule of Restricted Stock Units ("RSU") Activity | Restricted stock unit ("RSU") activity under the 2024 Plan and 2015 Plan for the years ended December 31, 2024, is summarized as follows:
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value Per Share |
Non-vested at December 31, 2023 |  |  | 1,886,374 |  |  | $ | 2.28 |
Granted |  |  | 2,025,940 |  |  | $ | 1.88 |
Vested |  |  | (720,599 | ) |  | $ | 2.88 |
Forfeited |  |  | (71,341 | ) |  | $ | 1.96 |
Non-vested at December 31, 2024 |  |  | 3,120,374 |  |  | $ | 1.89 |
Stock-Based Compensation Expense Related to Stock Options and Stock Awards | Stock-based compensation expense related to stock options and stock awards is included in the following line items in the accompanying statements of operations (in thousands):
|  | Years Ended December 31, |
|  | 2024 |  |  | 2023 |
Research and development |  | $ | 988 |  |  | $ | 873 |
Selling, general and administrative |  |  | 2,358 |  |  |  | 1,751 |
Total stock-based compensation expense |  | $ | 3,346 |  |  | $ | 2,624 |

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 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 of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
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