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Stock-Based Awards | 9 Months Ended
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Sep. 28, 2019
Stock-Based Awards |
Stock-Based Awards | Note 9—Stock-Based Awards Subject to certain adjustments, as of September 28, 2019, the Company was authorized to issue a maximum of 13,805,566 shares of its common stock pursuant to awards granted under its Amended and Restated 2006 Incentive Plan (“Amended 2006 Plan”). As of September 28, 2019, the Company had 1,160,322 shares of common stock available for issuance pursuant to future awards to be granted under the Amended 2006 Plan. Stock Options Stock options granted under the Amended 2006 Plan generally vest at a rate of at least 25% per year over four years and expire 10 years from the date of grant. The following table summarizes the Company’s stock option activities during the nine months ended September 28, 2019:
|  |  |  |  |  | Weighted-
|  |  | Number of |  |  | Average
|  |  | Shares |  |  | Exercise
|  |  | (in thousands) |  |  | Price
Outstanding at December 29, 2018 |  |  | 8,186 |  | $ | 1.18
Granted |  |  | 595 |  |  | 0.35
Exercised |  |  | (62) |  |  | 0.36
Expired or forfeited |  |  | (1,182) |  |  | 1.02
Outstanding at September 28, 2019 |  |  | 7,537 |  |  | 1.15
Restricted Stock Awards Restricted stock vests annually on each anniversary of the grant date over a two-year term. RSUs granted for employees and consultants generally vest semi-annually from the grant date over a four-year term, and RSUs granted for independent directors fully-vest on the grant-date. The activities of all restricted stock awards during the nine months ended September 28, 2019 are as follows:
|  |  |  |  |  | Weighted-
|  |  |  |  |  | Average
|  |  | Number of |  |  | Grant-Date
|  |  | Shares |  |  | Fair Value
|  |  | (in thousands) |  |  | per Share
Outstanding at December 29, 2018 |  |  | 525 |  | $ | 0.25
Granted |  |  | 3,727 |  |  | 0.55
Vested |  |  | (1,012) |  |  | 0.47
Forfeited |  |  | (113) |  |  | 0.54
Outstanding at September 28, 2019 |  |  | 3,127 |  |  | 0.52
Stock-Based Compensation Expense The following table summarizes the stock-based compensation expense by line item in the condensed consolidated statements of operations (in thousands):
|  | Three Months Ended |  | Nine Months Ended
|  | September 28, |  | September 29, |  | September 28, |  | September 29,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Cost of sales |  | $ | 6 |  | $ | 7 |  | $ | 20 |  | $ | 19
Research and development |  |  | 67 |  |  | 46 |  |  | 163 |  |  | 182
Selling, general and administrative |  |  | 170 |  |  | 104 |  |  | 599 |  |  | 370
Total |  | $ | 243 |  | $ | 157 |  | $ | 782 |  | $ | 571
As of September 28, 2019, the Company had approximately $1.8 million, net of estimated forfeitures, of unearned stock-based compensation, which it expects to recognize over a weighted-average period of approximately 3.0 years.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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