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Stock-based Compensation | 12 Months Ended
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Dec. 31, 2023
Share-Based Payment Arrangement [Abstract] |
Stock-based Compensation | NOTE 10—Stock-based Compensation As of December 31, 2023, the Company had the 2012 Equity Incentive Plan (the “2012 Option Plan”), 2019 Equity Incentive Plan (the “2019 Option Plan”) and the 2019 Employee Stock Purchase Plan (“ESPP”) in place. The 2019 Option Plan provides for the grant of incentive and non-statutory stock options (“Options”), stock appreciation rights (“SAR”), restricted stock awards (“RSA”), and restricted stock unit awards (“RSU”) to employees, nonemployee directors, and consultants of the Company. Option awards granted under the 2019 Option Plan generally become exercisable ratably over a two-year or four-year period following the date of grant and expire ten years from the date of grant. At the discretion of the Board of Directors, certain awards may be exercisable immediately at the date of grant but are subject to a repurchase right, under which the Company may buy back any unvested shares at their original exercise price in the event of an employee’s termination prior to full vesting. All other awards are exercisable only to the extent vested. At December 31, 2023 and 2022, there were no shares that had been early exercised that were subject to the Company’s repurchase right at that date. The exercise price or strike price for Options and SARs granted under the 2019 Option Plan must generally be at least equal to 100% of the fair value of the Company’s common stock at the date of grant, as determined by the Board of Directors. The exercise price of incentive stock options granted under the 2019 Option Plan to ten percent or greater stockholders must be at least equal to 110% of the fair value of the Company’s common stock at the date of grant, as determined by the Board of Directors, and are not exercisable after five years from the date of grant. The Board of Directors adopted, and its stockholders approved, the ESPP and the 2019 Option Plan in March 2019 and April 2019, respectively, each of which became effective in connection with the IPO. As of December 31, 2023, there were 158,337 shares of common stock available to be issued under the ESPP. The number of shares of common stock reserved for issuance under the ESPP automatically increases on January 1 of each calendar year for 10 years, starting January 1, 2020, and ending on, and including, January 1, 2029, in an amount equal to the lesser of 1% of the total number of shares of capital stock outstanding on December 31st of the prior calendar year, and (ii) 50,000 shares, unless the Board of Directors or the compensation committee of the Board of Directors determines prior to such date that there will be a lesser increase, or no increase. The increase under the ESPP for both 2023 and 2022 was 50,000 shares. During 2022 and 2023, there were no purchases under the ESPP. As of December 31, 2023, there were 1,843,128 shares of common stock available to be issued under the 2019 Option Plan, plus the number of shares subject to outstanding stock options or other stock awards that were granted under the 2012 Option Plan that are forfeited, terminated, expired or are otherwise not issued. Additionally, the number of shares of common stock reserved for issuance under the 2019 Option Plan automatically increases on January 1 of each calendar year for 10 years, starting January 1, 2020 and ending on and including January 1, 2029, in an amount equal to 5% of the total number of shares of capital stock outstanding on December 31st of the prior calendar year, unless the Board of Directors or compensation committee determines prior to the date of increase that there will be a lesser increase, or no increase. The automatic increase under the 2019 Option Plan for the years ended December 31, 2023 and 2022 was 2,038,734 shares and 940,444 shares, respectively. In July 2022, the Board of Directors approved an increase in the number of shares of common stock reserved for future issuance under the 2019 Option Plan by 5,000,000 shares, which was approved by the Company’s stockholders on October 26, 2022. In August 2023, the Board of Directors approved an increase in the number of shares of common stock reserved for future issuance under the 2019 Option Plan by 2,000,000 shares, which was approved by the Company’s stockholders on September 28, 2023. For the years ended December 31, 2023 and 2022, zero shares of common stock were issued under the 2019 Employee Stock Purchase Plan. Stock-based compensation expense is as follows: Schedule of Stock Based Compensation Expense
|  | 2023 |  |  | 2022 |
|  | For the Year Ended |
|  | December 31, |
|  | 2023 |  |  | 2022 |
Research and development |  | $ | 84 |  |  | $ | 18 |
Sales and marketing |  |  | 377 |  |  |  | 68 |
General and administrative |  |  | 934 |  |  |  | 1,426 |
Cost of revenues |  |  | 101 |  |  |  | 39 |
Total |  | $ | 1,496 |  |  | $ | 1,551 |
On January 27, 2022, 415,023 shares of common stock were issued under the 2019 Option Plan as payment to three executives for bonuses that relate to the 2021 year. The dollar value of these bonuses was fixed at $254 as of December 31, 2021, and the number of shares issued on January 27, 2022 was determined based on the closing stock price on that date. In the third quarter of 2022, 385,599 shares of common stock were issued under the 2019 Option Plan as payment to consultants for consulting fees. The value of these shares was $260 at the time of issuance and $260 was recorded as General and Administrative expenses in the Consolidated Statements of Operations for the year ended December 31, 2022. During the year ended December 31, 2023, 457,354 shares of common stock were issued under the 2019 Option Plan as payment to consultants for consulting fees and 230,000 shares of common stock were issued outside of the Company’s stock plans as payment to consultants for consulting fees. The aggregate value of shares issued to consultants for consulting fees during the year ended December 31, 2023 was $498 at the time of issuance, $388 of which is included in General and Administrative expenses in the Consolidated Statements of Operations for the year ended December 31, 2023, and $110 of which is included in Prepaid Expenses and Other Current Assets in the Consolidated Balance Sheets as of December 31, 2023. Stock Options: Stock option activity for the years ended December 31, 2023 and 2022 is as follows: Schedule of Stock Option Activity
|  |  |  |  | Weighted average exercise price |  |  | Weighted average remaining contractual life |  |  | Aggregate Intrinsic |
|  | Options |  |  | per share |  |  | (in years) |  |  | Value* |
Outstanding at January 1, 2022 |  |  | 95,413 |  |  | $ | 40.00 |  |  |  | 6.73 |  |  | $ | 0 |
Options granted |  |  | 4,414,419 |  |  | $ | 0.44 |  |  |  |  |  |  |  |  |
Options exercised |  |  | — |  |  | $ | — |  |  |  |  |  |  |  |  |
Options forfeited |  |  | (15,303 | ) |  | $ | 33.65 |  |  |  |  |  |  |  |  |
Options cancelled |  |  | (18,314 | ) |  | $ | 49.67 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2022 |  |  | 4,476,215 |  |  | $ | 0.95 |  |  |  | 9.76 |  |  | $ | 358 |
Options granted |  |  | 1,803,000 |  |  | $ | 0.57 |  |  |  |  |  |  |  |  |
Options exercised |  |  | (1,125,000 | ) |  | $ | 0.42 |  |  |  |  |  |  |  |  |
Options forfeited |  |  | — |  |  | $ | — |  |  |  |  |  |  |  |  |
Options cancelled |  |  | (7,833 | ) |  | $ | 4.50 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2023 |  |  | 5,146,382 |  |  | $ | 0.93 |  |  |  | 8.94 |  |  | $ | 1,370 |
Vested and expected to vest at December 31, 2023 |  |  | 5,146,382 |  |  | $ | 0.93 |  |  |  | 8.94 |  |  | $ | 1,370 |
Exercisable at December 31, 2023 |  |  | 609,948 |  |  | $ | 4.00 |  |  |  | 8.55 |  |  | $ | 167 |
* | The intrinsic value is calculated as the difference between the exercise price and the fair value of the common stock on the balance sheet date.
On December 26, 2023, an employee exercised 125,000 stock options. The Company issued common stock related to the exercised stock options in January 2024. As of December 31, 2023, there was approximately $1,395 of unamortized stock-based compensation cost related to unvested stock options, which is expected to be recognized over a weighted average period of 1.53 years. The total pre-tax intrinsic value of options exercised during the year ended December 31, 2023 was $196. The intrinsic value is the difference between the estimated fair value of the Company’s common stock at the date of exercise and the exercise price for in-the-money options. The weighted average grant date fair value of options granted during the years ended December 31, 2023 and 2022 was $0.57 and $0.40, respectively. The fair value of stock options is determined using the Black-Scholes option-pricing model using various inputs, including the Company’s estimates of the fair value of common stock on the date of grant, expected term, expected volatility, risk-free interest rate, and expectations regarding future dividends. Stock-based compensation also reflects the Company’s estimate regarding the portion of awards that may be forfeited. The following describes the key inputs used by the Company: Fair Value of Common Stock—The Company measures equity classified stock-based awards granted to employees, consultants, and directors based on the estimated fair value on the date of grant, and the expense is recognized on a straight-line basis over the vesting period. Expected Term—The expected term represents the period that the Company’s stock options are expected to be outstanding. The majority of stock option grants are considered to be “plain vanilla” and thus the Company determines the expected term using the simplified method. The simplified method deems the term to be the average of the time-to-vesting and the contractual life of the options. Expected Volatility—The expected volatility was derived from the historical stock volatility of the Company’s common stock since its IPO in May 2019. Risk-Free Interest Rate—The risk-free interest rate is based on the interest yield in effect at the date of grant for zero coupon U.S. Treasury notes with maturities approximately equal to the option’s expected term. Dividend Rate—The expected dividend rate was assumed to be zero, as the Company has not previously paid dividends on common stock and has no current plans to do so. Forfeiture Rate—Forfeitures are recognized when they occur. Historically, the Company estimated the forfeiture rate based on an analysis of actual forfeiture experience, analysis of employee turnover behavior, and other factors. The following represents the weighted-average assumptions used in the Black-Scholes valuation model by the Company in calculating the fair value of each stock option granted during the year ended December 31, 2023: Schedule of Fair Value Option grants
Expected dividend yield |  |  | 0 | %
Risk-free interest rate |  |  | 3.81 | %
Expected volatility |  |  | 114 | %
Expected life (in years) |  |  | 5.6 |
Restricted Stock Awards: During 2022, 385,599 restricted stock awards with a grant date value of $260 were awarded and released in exchange for consulting services. The expense was recorded in the Consolidated Statements of Operations as General and Administrative expenses. During 2023, 457,354 restricted stock awards with a grant date value of $305 were awarded and released in exchange for consulting services. The expense was recorded in the Consolidated Statements of Operations as General and Administrative expenses. Restricted Stock Units: The Company accounts for restricted stock units (“RSUs”) issued to employees and non-employees at fair value, based on the market price of the Company’s common stock on the date of grant. The RSUs are expensed over the vesting period, and the Company accounts for forfeitures as they occur. RSUs, primarily issued as incentives, generally vest annually over one to four years. The following table summarized the outstanding RSUs as of December 31, 2023: Schedule of Outstanding Restricted Stock Units
|  | RSUs |
Outstanding at January 1, 2022 |  |  | 860,888 |
Granted |  |  | 445,200 |
Released |  |  | (619,042 | )
Forfeited |  |  | (5,200 | )
Outstanding at December 31, 2023 |  |  | 681,846 |
As of December 31, 2023, there was approximately $391 of unamortized stock-based compensation cost related to unvested RSUs, which is expected to be recognized over a weighted average period of 1.15 years.

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