Stock-based Compensation |
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Stock-based Compensation | Stock-based Compensation We issue equity awards to our employees and non-employees in the form of stock options, restricted stock units (“RSUs”) and performance based RSUs (“PRSUs”). Additionally, we also offer an employee stock purchase plan (“ESPP”) to our eligible employees. We use Black-Scholes option pricing model to value our stock options granted and the estimated shares to be purchased under the ESPP. For both RSUs and PRSUs, we use our common stock price, which is the last reported sales price on the grant date to value those securities.
In general, we recognize stock-based compensation expense on a straight-line basis over the requisite service period and records forfeitures as they occur. For PRSUs, we use the graded vesting method to calculate the stock-based
compensation expense. At each reporting period, we would recognize and adjust the stock-based compensation expense based on its probability assessment in meeting its PRSUs' performance conditions.
Stock-based Compensation Expense
The following table summarizes the total stock-based compensation expense, by operating expense category, recognized in the Condensed Consolidated Statements of Operations for the periods presented below (in thousands).
For the quarters ended March 31, 2024 and April 2, 2023, we capitalized $0.4 million and $0.6 million, respectively, of stock-based compensation as property and equipment, net on the Condensed Consolidated Balance Sheet. There was no recognized tax benefit related to stock-based compensation for the periods presented. In addition, we accrued an immaterial amount of bonus to be settled in equity awards as accrued compensation on the Condensed Consolidated Balance Sheet as of March 31, 2024.
As of March 31, 2024, there was approximately $110.3 million of total unrecognized stock-based compensation expense related to unvested equity awards, which are expected to be recognized over a weighted-average period of 3.6 years. As of March 31, 2024, there was approximately $1.4 million of total unrecognized stock-based compensation related to the ESPP, which is expected to be recognized over a period of 1.1 years.
Equity Award Modification
For the quarter ended March 31, 2024, there was no equity award modification. For the quarter ended April 2, 2023, we recognized $21.1 million of stock-based compensation expense related to the modifications in connection with the retirement or resignation of several of our former officers and executives, which impacted the vesting conditions as the term of equity award exercise period was extended and certain of the equity awards were accelerated and vested immediately.
Stock Option Activity
The following table summarizes stock option activities for the quarter ended March 31, 2024 (in thousands, except share and per share amount).
Unvested early exercised stock options which are subject to repurchase by us are not considered participating securities as those shares do not have non-forfeitable rights to dividends or dividend equivalents. Unvested early exercised stock options are not considered outstanding for purposes of the weighted average outstanding share calculation until they vest.
Early Exercise of Options
As of March 31, 2024, 308,745 shares remained subject to our right of repurchase as a result of early exercised stock options. The remaining liability related to early exercised shares as of March 31, 2024 was immaterial and was recorded in other current and non-current liabilities in the Condensed Consolidated Balance Sheets.
Restricted Stock Unit and Performance Restricted Stock Unit Activities
The following table summarizes RSUs and PRSUs activities for the fiscal quarter ended March 31, 2024 (in thousands, except share and per share amount).
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