Employee Stock Plans

3 Months Ended

Apr. 01, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Employee Stock Plans

Employee Stock Plans

2009 Stock Plan

The 2009 Stock Plan, or the 2009 Plan, was amended and restated by the Board of Directors in January 2015, in February 2017 and in March 15, 2018 and approved by the Company's stockholders on April 23, 2015, on April 26, 2017 and on April 25, 2018 to, among other things, reserve an additional 2.5 million, 1.5 million and 4.0 million shares of common stock, respectively, for issuance under the 2009 Plan. As of April 1, 2018, approximately 16.4 million shares were reserved for issuance under the 2009 Plan. On March 15, 2018, Board of directors extended the term of the Stock Plan until March 15, 2028.

Employee Stock Purchase Plan

The 2009 Employee Stock Purchase Plan, or the 2009 ESPP, was adopted in March 2009. The 2009 ESPP was amended by the Board of Directors in January 2015 and in February 2017, and was approved by the Company's stockholders on April 23, 2015 and April 26, 2017, to reserve an additional 1.0 million and 1.5 million shares of common stock, respectively, for issuance under the 2009 ESPP. As of April 1, 2018, approximately 4.8 million shares were reserved for issuance under the 2009 ESPP.