Through December 31, 2021, outstanding awards granted, net of forfeitures and exercises, under the 2008 Plan consisted of 46,000 shares of incentive stock options, 803,000 shares of non-statutory stock options, 110,000 shares of restricted stock awards and 212,000 shares of performance-based restricted stock units.
Employee Stock Purchase Plan
Amended and Restated 2006 Employee Stock Purchase Plan
The Company adopted its Amended and Restated 2006 Employee Stock Purchase Plan (“ESPP”) to allow eligible employees the right to purchase shares of common stock, at semi-annual intervals, with their accumulated payroll deductions. The plan received stockholder approval in June 2006. The Company re-submitted the plan to its stockholders for post-IPO approval at the 2007 annual stockholders’ meeting where approval was obtained. The ESPP initially had 300,000 shares of common stock reserved for issuance. At the 2017 annual meeting of the stockholders, the stockholders approved an 825,000 share increase to the ESPP. A total of 1,125,000 shares of the Company’s common stock have been reserved for issuance under the plan.
The plan has semi-annual periods beginning on each January 1 and ending on each June 30 and beginning on each July 1 and ending on each December 31. The first offering period commenced on February 10, 2007 and ended on June 30, 2007. Participants make contributions under the plan only by means of payroll deductions each payroll period. The rate of payroll contributions elected by a Participant may not be less than one percent (1%) nor more than ten percent (10%) of the Participant’s Earnings for each payroll period, and only whole percentages may be elected. The accumulated contributions are applied to the purchase of shares. Shares are purchased under the plan on or as soon as practicable after, the last day of the offering period. The purchase price per share equals 85% of the fair market value of a share on the lesser price of the share on the first day or last day of the offering period. The Company’s Amended and Restated 2006 Employee Stock Purchase Plan is a compensatory plan.
As of December 31, 2021, there were 479,000 shares available for issuance under the plan.
Stock-based Compensation Expense
The compensation expense that has been recognized for stock options, restricted stock awards (“RSA”), performance-based restricted stock units (“PBRSU”), and ESPP issued under these plans was $16.6 million, $16.1 million, and $12.1 million for fiscal years 2021, 2020, and 2019, respectively.
The Company did 0t have any unrecognized compensation expense related to nonvested stock options for fiscal year 2021. The total unrecognized compensation expense related to nonvested stock options was $0.4 million, and $1.5 million for fiscal years 2020, and 2019, respectively.
The total unrecognized compensation expense related to RSAs was $3.3 million, $3.6 million, and $1.5 million, for fiscal years 2021, 2020, and 2019, respectively.
The total unrecognized compensation expense related to PBRSUs was $2.2 million, $13.2 million, and $21.5 million for the fiscal years 2021, 2020, and 2019, respectively. That expense is expected to be recognized over a weighted-average period of 0.18 years.
There were 0 options granted that were immediately vested during the fiscal years 2021, 2020, or 2019.