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Stock Incentive and Employee Benefit Plan (Tables) | 9 Months Ended
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Sep. 30, 2024
Share-Based Payment Arrangement [Abstract] |
Schedule of Stock Options Outstanding Activity | The following table summarizes stock option activity during the nine months ended September 30, 2024 (in thousands, except for per share amounts and contractual life):
| Options |  |  | Weighted-Average Exercise Price |  |  | Weighted-Average Remaining Contractual Life, in years |  |  | Aggregate Intrinsic Value |
Outstanding as of December 31, 2023 |  | 33,124 |  |  | $ | 4.38 |  |  |  | 7.5 |  |  | $ | 7,459 |
Granted |  | 1,867 |  |  | $ | 1.04 |  |  |  |  |  |  |
Exercised |  | (154 | ) |  | $ | 1.48 |  |  |  |  |  |  |
Forfeited/cancelled |  | (476 | ) |  | $ | 6.85 |  |  |  |  |  |  |
Outstanding as of September 30, 2024 |  | 34,361 |  |  | $ | 4.17 |  |  |  | 6.7 |  |  | $ | 224 |
Exercisable as of September 30, 2024 |  | 22,652 |  |  | $ | 3.33 |  |  |  | 5.8 |  |  | $ | 200 |
Schedule of Stock Options Valuation Assumption Used | The following assumptions were used in the Black-Scholes option pricing model to estimate stock-based compensation on the date of grant for stock options granted and ESPP shares issued:
|  | Nine Months Ended September 30, 2024
Stock options: |  |
Expected dividend yield |  | 0.00%
Expected volatility |  | 72% - 97%
Risk-free interest rate |  | 3.79% - 4.44%
Term of options (in years) |  | 5.5 - 6.3
Employee stock purchase plan: |  |
Expected dividend yield |  | 0.00%
Expected volatility |  | 129.30%
Risk-free interest rate |  | 5.39%
Expected life (in years) |  | 0.50

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- 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
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- 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
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