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Equity Incentive Awards (Tables)

12 Months Ended

Dec. 31, 2024

Share-Based Payment Arrangement [Abstract]

Summary of Stock Option Activity

Stock Options. The following is a summary of stock option activity under Lexicon’s equity incentive plans for the year ended December 31, 2024:

						As of December 31, 2024
(in thousands, except exercise price data)						Options						Weighted Average Exercise Price
Outstanding at beginning of year						18,705						$	3.93
Granted						7,377						1.92
Exercised						(51)						1.72
Expired						(296)						11.79
Forfeited						(10,346)						3.36
Outstanding at end of year						15,389						3.20
Exercisable at end of year						7,518						$	4.33

Summary of Weighted-Average Stock Options Assumptions

The following weighted-average assumptions were used for stock options granted in the years ended December 31, 2024, 2023 and 2022, respectively:

			Expected Volatility						Risk-free Interest Rate						Expected Term						Dividend Rate
December 31, 2024:
Employees			96%						4.4%						4						0		%
Officers and non-employee directors			104%						4.2%						6						0		%
December 31, 2023:
Employees			110%						3.9%						4						0		%
Officers and non-employee directors			98%						4.0%						6						0		%
December 31, 2022:
Employees			109%						2.8%						4						0		%
Officers and non-employee directors			91%						1.9%						7						0		%

Summary of Restricted Stock Units Activity

The following is a summary of restricted stock units activity under Lexicon’s stock-based compensation plans for the year ended December 31, 2024:

						Shares						Weighted Average Grant Date Fair Value
						(in thousands)
Outstanding at December 31, 2023						5,015						$	2.78
Granted						8,527						2.14
Vested						(1,970)						3.10
Forfeited						(5,272)						2.23
Outstanding at December 31, 2024						6,300						$	2.27

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

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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.

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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.

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