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Stock-Based Compensation | 6 Months Ended
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Jun. 30, 2022
Share-Based Payment Arrangement [Abstract] |
Stock-Based Compensation | Stock-Based Compensation There have been no material changes to the terms of our 2018 Equity Incentive Plan (the "2018 Plan"), 2018 Employee Stock Purchase Plan ("2018 ESPP") and 2009 Equity Incentive Plan ("2009 Plan") since the filing of our Annual Report on Form 10-K. Refer to Note 14, Stock-Based Compensation, in our Annual Report on Form 10-K filed with the SEC on April 7, 2022 for more information on our various equity incentive plans. 2018 Equity Incentive Plan Shares of common stock reserved for issuance under the 2018 Plan also will include any shares of common stock subject to stock options, restricted stock units or similar awards granted under the 2009 Plan, that, on or after the adoption of the 2018 Plan, expire or otherwise terminate without having been exercised in full and shares of common stock issued pursuant to awards granted under the 2009 Plan that are forfeited to or repurchased by us. As of June 30, 2022, the maximum number of shares of common stock that may be added to the 2018 Plan pursuant to the foregoing is 897,229. Not including the maximum number of shares from the 2009 Plan that may be added to the 2018 Plan, the 2018 Plan had 3,582,435 and 762,038 shares of common stock reserved for future issuances as of June 30, 2022 and December 31, 2021, respectively. Restricted Stock Units A summary of our restricted stock unit activity under the 2018 Plan for the six months ended June 30, 2022 is set forth below:
| Shares |  | Weighted Average Grant Date Fair Value
Outstanding as of December 31, 2021 | 3,576,270 |  |  | $ | 1.94 |
Granted | — |  |  | — |
Released | (881,924) |  |  | 1.85 |
Forfeited | (73,000) |  |  | 2.33 |
Outstanding as of June 30, 2022 | 2,621,346 |  |  | $ | 1.95 |
Stock Options During third quarter of 2021, we granted an option to purchase 50,000 shares of our common stock to a non-employee consultant with an exercise price of $1.08 per share. The option vests over one year in twelve equal monthly installments. The non-employee consultant ceased providing services to us during the second quarter of 2022, and, as such, 12,500 shares of this stock option were forfeited as of such date. As of June 30, 2022, the holder had not exercised the balance of this stock option and this is the only stock option grant outstanding under the 2018 Plan. 2018 Employee Stock Purchase Plan We use a Black-Scholes option pricing model to determine the fair value of shares to be purchased under the 2018 ESPP. Stock-based compensation expense related to our 2018 ESPP for the three and six months ended June 30, 2022 was not significant. There were 911,245 and 189,215 shares of common stock available for sale and reserved for issuance as of June 30, 2022 and December 31, 2021, respectively. 2009 Equity Incentive Plan A summary of our option activity under the 2009 Plan and related information is as follows:
| Number of Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term (years) |  | Aggregate Intrinsic Value
Outstanding as of December 31, 2021 | 925,467 |  |  | $ | 0.80 |  |  | 5.59 |  | $ | 1,692 |
Granted | — |  |  | — |  |  |  |  |
Exercised | (22,757) |  |  | 0.68 |  |  |  |  |
Forfeited | (5,481) |  |  | 2.00 |  |  |  |  |
Outstanding as of June 30, 2022 | 897,229 |  |  | $ | 0.80 |  |  | 5.21 |  | $ | 374 |
Exercisable as of June 30, 2022 | 895,638 |  |  | $ | 0.79 |  |  | 5.21 |  | $ | 374 |
For the six months ended June 30, 2022, the aggregate intrinsic value of options exercised was $374 and the total fair value of options vested was $16. Stock-Based Compensation Compensation costs that have been included in our condensed consolidated statements of operations and comprehensive loss for all stock-based compensation arrangements is set forth below:
| Three Months Ended June 30, |  | Six Months Ended June 30,
Stock-based compensation | 2022 |  | 2021 |  | 2022 |  | 2021
Cost of revenues | $ | 49 |  |  | $ | 323 |  |  | $ | 95 |  |  | $ | 532 |
Sales and marketing | 27 |  |  | 129 |  |  | 45 |  |  | 231 |
General and administrative | 595 |  |  | 709 |  |  | 1,067 |  |  | 1,334 |
Research and development | 35 |  |  | 222 |  |  | 63 |  |  | 341 |
Total stock-based compensation | $ | 706 |  |  | $ | 1,383 |  |  | $ | 1,270 |  |  | $ | 2,438 |
As of June 30, 2022, there was approximately $4,588, $293 and $2 of total unrecognized compensation cost related to the 2018 Plan, the 2018 ESPP and the 2009 Plan, respectively. These unrecognized compensation costs are expected to be recognized over an estimated weighted-average period of approximately 2.3 years, 1.3 years and 0.9 years for the 2018 Plan, the 2018 ESPP and 2009 Plan, respectively.

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