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Equity Incentive Awards (Tables) | 9 Months Ended
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Sep. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | The following weighted-average assumptions were used for stock options granted in the nine months ended September 30, 2025 and 2024:
|  | Expected Volatility |  | Risk-free Interest Rate |  | Expected Term |  | Dividend Rate
Nine Months Ended September 30, 2025 |  |  |  |  |  |  |  |
Employees |  | 105 | % |  | 3.9 | % |  | 4 |  | — | %
Officers and non-employee directors |  | 115 | % |  | 4.3 | % |  | 6 |  | — | %
Nine Months Ended September 30, 2024 |  |  |  |  |  |  |  |
Employees |  | 96 | % |  | 4.4 | % |  | 4 |  | — | %
Officers and non-employee directors |  | 104 | % |  | 4.2 | % |  | 6 |  | — | %
Share-based Payment Arrangement, Option, Activity | The following is a summary of stock option activity under Lexicon’s stock-based compensation plans:
|  | Stock Options |  | Weighted Average Exercise Price
|  | (in thousands) |  |
Outstanding at December 31, 2024 |  | 15,389 |  |  | $ | 3.20 |
Granted |  | 10,594 |  |  | 0.69 |
Exercised |  | — |  |  | — |
Expired |  | (310) |  |  | 6.41 |
Forfeited |  | (4,723) |  |  | 2.86 |
Outstanding at September 30, 2025 |  | 20,950 |  |  | 1.96 |
Exercisable at September 30, 2025 |  | 7,331 |  |  | $ | 3.63 |
Schedule of Nonvested Restricted Stock Units Activity | The following is a summary of restricted stock unit activity under Lexicon’s stock-based compensation plans:
|  | RSU’s |  | Weighted Average Grant Date Fair Value
|  | (in thousands) |  |
Outstanding at December 31, 2024 |  | 6,300 |  |  | $ | 2.27 |
Granted |  | 14,323 |  |  | 0.69 |
Vested |  | (2,761) |  |  | 2.35 |
Forfeited |  | (2,393) |  |  | 1.18 |
Outstanding at September 30, 2025 |  | 15,469 |  |  | $ | 0.96 |

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- 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
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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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