Stock-Based Compensation and Employee Benefit Plans |
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| Share-Based Payment Arrangement [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Stock-Based Compensation and Employee Benefit Plans | Stock-Based Compensation and Employee Benefit Plans Amended and Restated 2020 Equity Incentive Plan In September 2020, the Company adopted the 2020 Equity Incentive Plan which, as of the adoption date, replaced the 2016 Stock Incentive Plan. This plan was amended and restated in May 2026 (as amended and restated, the "2020 Plan") and an additional 1,691,082 shares were added to the share reserve. Under the 2020 Plan, the share reserve automatically increases on January 1st of each year beginning in 2027 and ending with a final increase on January 1, 2030 in an amount equal to 4% of the Company’s outstanding shares of common stock, shares of common stock underlying unexercised pre-funded warrants, and shares of common stock underlying any outstanding preferred stock (determined on an as-converted basis). The Board may provide that there will be no increase in the share reserve for any such year or that the increase in the share reserve may be smaller than would otherwise occur. On January 1, 2026, the share reserve automatically increased by 2,531,194 shares. As of June 30, 2026, there were 2,592,441 shares available for future grants. The 2020 Plan permits the granting of options, stock appreciation rights, RSUs, performance stock, and performance cash awards. The terms of the agreements under the 2020 Plan are determined by the Board. The Company’s awards generally vest over four years and have a term of 10 years. 2020 Employee Stock Purchase Plan The 2020 Employee Stock Purchase Plan (the “2020 ESPP”) became effective in October 2020. Eligible employees may purchase shares of common stock under the 2020 ESPP at 85% of the lower of the fair market value of the Company’s common stock as of the first or the last day of each offering period. Employees are limited to contributing 15% of the employee’s eligible compensation and may not purchase more than $25,000 of stock during any calendar year or more than 2,000 shares during any one purchase period. The 2020 ESPP share reserve automatically increases on January 1st of each calendar year, for ten years, commencing on January 1, 2021, in an amount equal to 1% of the total number of shares of common stock outstanding on December 31st of the preceding calendar year. The Board may act prior to January 1st of a given year to provide that there will be no January 1st increase of the share reserve for such year or that the increase in the share reserve for such year will be a smaller number of shares of common stock than would otherwise occur pursuant to the preceding sentence. The Board elected not to increase the share reserve for the ESPP on January 1, 2026. As of June 30, 2026, there were 1,660,870 shares available for future purchases. There were no shares issued under the Company’s 2020 ESPP during the three months ended June 30, 2026 and 2025, respectively. During the six months ended June 30, 2026 and 2025, the Company issued 30,916 and 6,859 shares of common stock, respectively, for aggregate cash proceeds of less than $0.1 million. Summary of Stock-Based Compensation Expense The Company recorded stock-based compensation expense in the following expense categories of its accompanying unaudited interim condensed statements of operations and comprehensive loss (in thousands):
Stock Options The following table summarizes option activity under the 2020 Plan for the six months ended June 30, 2026:
Options granted during the six months ended June 30, 2026 and 2025 had weighted-average grant-date fair values of $4.11 and $0.96 per share, respectively. As of June 30, 2026, the unrecognized compensation cost for options issued was $25.5 million and will be recognized over an estimated weighted-average amortization period of 1.51 years. The total intrinsic value of options exercised during the six months ended June 30, 2026 and 2025 was $0.2 million and $0.0 million, respectively. The aggregate intrinsic value of options outstanding and exercisable as of June 30, 2026 was $15.0 million. Restricted Stock Units The following table summarizes employee RSU activity for the six months ended June 30, 2026:
The Company recognized $0.4 million and $0.7 million of stock-based compensation cost related to RSUs for the six months ended June 30, 2026 and 2025, respectively. As of June 30, 2026, the unrecognized compensation cost for RSUs issued was $3.1 million and will be recognized over an estimated weighted-average amortization period of 1.22 years. The fair values of RSUs are based on the fair value of the Company’s common stock on the date of the grant. Fair Value of Stock Options and Shares Issued The Company accounts for stock-based compensation by measuring and recognizing as compensation expense the fair value of all share-based payment awards made to employees, including employee stock options and restricted stock awards. The Company uses the Black-Scholes option pricing model to estimate the fair value of employee stock options that only have service or performance conditions. The inputs to the pricing model requires a number of management estimates such as the expected term, volatility, risk-free interest rate, and dividend yield. The fair value of stock options was determined using the methods and assumptions discussed below. •The expected term of employee stock options with service-based vesting is determined using the “simplified” method, whereby the expected life equals the arithmetic average of the vesting term and the original contractual term of the option due to the Company’s lack of sufficient historical data. •The expected stock price volatility assumption is based on the historical volatilities of the common stock of a peer group of publicly traded companies as well as the historical volatility of the Company’s common stock since the Company began trading subsequent to the Company’s initial public offering (“IPO”) in October 2020 over the period corresponding to the expected life as of the grant date. The historical volatility data was computed using the daily closing prices during the equivalent period of the calculated expected term of the stock-based awards. The Company will continue to apply this process until a sufficient amount of historical information regarding the volatility of the Company’s stock price becomes available, or until circumstances change, such that the identified entities are no longer comparable companies. In the latter case, other suitable, similar entities whose share prices are publicly available would be utilized in the calculation. •The risk-free interest rate is based on the interest rate payable on U.S. Treasury securities in effect at the time of grant for a period that is commensurate with the expected term. •The expected dividend yield is 0% because the Company has not historically paid, and does not expect, for the foreseeable future, to pay dividends on its common stock. The grant-date fair value of options calculated using the Black-Scholes option pricing model granted under the Company’s 2020 Plan were estimated using the following weighted-average assumptions:
The grant-date fair value of shares issued calculated using the Black-Scholes option pricing model under the Company’s 2020 ESPP were estimated using the following weighted-average assumptions:
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