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Stock Incentive and Employee Benefit Plan | 3 Months Ended
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Mar. 31, 2026
Share-Based Payment Arrangement [Abstract] |
Stock Incentive and Employee Benefit Plan | 11. Stock Incentive and Employee Benefit Plan 2017 Scilex Pharmaceuticals Inc. Equity Incentive Plan In June 2017, the Board adopted the Scilex Pharmaceuticals Inc. Equity Incentive Plan (the “Scilex Pharma 2017 Plan”). In connection with the corporate reorganization in March 2019, the Scilex Pharma 2017 Plan was terminated. Accordingly, after such time, no additional awards were granted under the Scilex Pharma 2017 Plan. However, the 2017 Stock Option Plan will continue to govern outstanding awards granted thereunder. Scilex Holding Company 2019 Stock Option Plan In May 2019, the Board adopted the Scilex Holding Company 2019 Stock Option Plan (the “2019 Stock Option Plan”), which subsequently was amended in December 2020. The 2019 Stock Option Plan was terminated at the closing of the Scilex Business Combination, and no further awards have been granted under the 2019 Stock Option Plan thereafter. However, the 2019 Stock Option Plan will continue to govern outstanding awards granted thereunder. Scilex Holding Company 2022 Equity Incentive Plan In October 2022, the Board adopted the Equity Incentive Plan. As of March 31, 2026, a total of 1,051,604 shares of Common Stock were available and have been reserved for future issuance under the Equity Incentive Plan. Scilex Holding Company 2023 Inducement Plan On January 17, 2023, the compensation committee of the Board adopted the Scilex Holding Company 2023 Inducement Plan (the “Inducement Plan”). The Inducement Plan provides for the grant of equity-based awards in the form of non-statutory stock options, stock appreciation rights, restricted stock, restricted stock units, and other awards solely to prospective employees of the Company or an affiliate of the Company provided that certain criteria are met. The initial maximum number of shares available for grant under the Inducement Plan is 40,000 shares of Common Stock (subject to adjustment for recapitalizations, stock splits, reorganizations and similar transactions). No awards were granted under the Inducement Plan during the three months ended March 31, 2026 and 2025. As of March 31, 2026, options to purchase 1,494,241 shares of Common Stock were outstanding under all equity incentive plans. The following table summarizes stock option activity during the three months ended March 31, 2026 (shares in thousands):
| Options |  |  | Weighted-Average Exercise Price |  |  | Weighted-Average Remaining Contractual Life, in years |  |  | Aggregate Intrinsic Value |
Outstanding as of December 31, 2025 |  | 1,504 |  |  | $ | 46.59 |  |  |  | 6.4 |  |  | $ | — |
Forfeited/Cancelled |  | (10 | ) |  |  | 47.86 |  |  |  | — |  |  |  | — |
Outstanding as of March 31, 2026 |  | 1,494 |  |  | $ | 46.58 |  |  |  | 6.6 |  |  | $ | 1,176 |
Vested and expected to vest as of March 31, 2026 |  | 1,494 |  |  |  | 46.58 |  |  |  | 6.6 |  |  | $ | 1,176 |
Exercisable as of March 31, 2026 |  | 953 |  |  | $ | 57.49 |  |  |  | 5.2 |  |  | $ | 245 |
Intrinsic value is calculated as the difference between the exercise price of the underlying options and the fair value of the Common Stock for the options that had exercise prices that were lower than the per share fair value of the Common Stock as of the measurement date of the intrinsic value. No stock options were granted during the three months ended March 31, 2026. No options were exercised during the three months ended March 31, 2026. The maximum term of options granted under each of the equity incentive plans is ten years. Total stock-based compensation recorded within operating expenses was $3.6 million and $3.3 million for the three months ended March 31, 2026 and 2025, respectively. The total unrecognized compensation costs related to unvested employee and non-employee stock option grants as of March 31, 2026 were $16.2 million, which the Company expects to recognize over a weighted-average period of approximately 2.9 years. Scilex Holding Company 2022 Employee Stock Purchase Plan In October 2022, the Board adopted the Scilex Holding Company 2022 Employee Stock Purchase Plan (the “ESPP”). The purchase price of the Common Stock is equal to 85% of the lesser of the market value of such shares at the beginning of an offering period or the date of purchase. As of March 31, 2026, the total number of shares of Common Stock that may be issued under the ESPP shall not exceed 217,302, which was increased from 170,575 shares as a result of automatic annual increase on January 1, 2026. Total stock-based compensation recorded as operating expense for the ESPP was $12.2 thousand for the three months ended March 31, 2026, and $50.2 thousand for the three months ended March 31, 2025. For the three months ended March 31, 2026, there were nil shares of Common Stock issued under the ESPP. Valuation Assumptions The Company calculates the fair value of stock options granted to employees and nonemployees and shares issued under the ESPP using the Black-Scholes option pricing method. The Black-Scholes option pricing method requires the use of subjective assumptions. There were no stock options granted under the ESPP for the three months ended March 31, 2026. Semnur 2024 Stock Option Plan Concurrent with the signing of the Semnur Business Combination Agreement, the Board, the Company (as the sole stockholder of Semnur) and the board of directors of Semnur approved the 2024 Stock Option Plan (the “Semnur 2024 Plan”). Under the Semnur 2024 Plan, 40,000,000 shares of Semnur Common Stock were reserved for future issuance and nonstatutory stock options (“NSOs”) to purchase the same amount of Semnur Common Stock were granted to certain executive officers of Semnur. The NSOs were granted on August 30, 2024 and expire on August 30, 2034. No expense was recorded in connection with the NSOs as of March 31, 2026, as until the date on which all payments and all obligations under the Oramed Note have been paid in full in cash, such options will not be or become exercisable, eligible for exchange, redemption or repurchase, eligible to participate in any dividends or distributions or have any voting rights in respect of the Company or any of its current or future subsidiaries of the Company, and following the closing of the transactions contemplated by the Semnur Business Combination Agreement, the Company, Denali or any of their respective current and future subsidiaries, successors and assigns. Employee Benefit Plan The Company maintains a defined contribution 401(k) plan available to eligible employees. Employee contributions are voluntary and are determined on an individual basis, limited to the maximum amount allowable under federal tax regulations. The Company made matching contributions to the 401(k) plan totaling $0.1 million and $0.2 million for each of the three months ended March 31, 2026 and 2025, respectively. Retainer Shares On February 13, 2023, the Company entered into a Stock Issuance Agreement (the “2023 SIA”) with a law firm for the provision of legal services to the Company. Under the 2023 SIA, the Company issued 114,286 shares of Common Stock to the law firm. On July 1, 2024, the Company entered into another Stock Issuance Agreement (the “2024 SIA”) with the same law firm for the provision of legal services to the Company. Under the 2024 SIA, the Company issued 285,714 shares of Common Stock to the same law firm. On July 22, 2025, Legacy Semnur entered into a stock issuance agreement with the law firm named therein pursuant to which the law firm was issued 10,000,000 shares of Legacy Semnur common stock as a retainer for legal services. Upon the closing of the Semnur Business Combination, the shares were exchanged for 12,500,000 shares (i.e., the then-existing 10,000,000 shares of Legacy common stock multiplied by the Exchange ratio) of Semnur common stock. All such shares are held by the law firm as collateral for current and future outstanding legal fees due from the Company (the “Retainer Shares”). At the option of the law firm, the Retainer Shares may be sold and the net proceeds may be applied against the outstanding legal fees. The Retainer Shares not applied against the outstanding legal fees due will be returned to the Company. As of March 31, 2026, it was no t probable that any of the Retainer Shares would be applied against any outstanding legal fees.

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- Definition The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/715/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 712 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/712/tableOfContent Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 710 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/710/tableOfContent Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/718/tableOfContent + Details
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