We have a tax-qualified employee savings and retirement plan (the “401(k) Plan”) covering all our employees. Pursuant to the 401(k) Plan, employees may elect to reduce their current compensation by up to the statutorily prescribed annual limit ($18,500 in 2018 and $18,000 in both 2017 and 2016) and to have the amount of such reduction contributed to the 401(k) Plan. The 401(k) Plan is intended to qualify under Section 401 of the Internal Revenue Code so that contributions by employees or by us to the 401(k) Plan, and income earned on 401(k) Plan contributions, are not taxable to employees until withdrawn from the 401(k) Plan, and so that contributions by us, if any, will be deductible by us when made. At the direction of each participant, we invest the assets of the 401(k) Plan in any of over 50 investment options. Company contributions under the 401(k) Plan were $317,000, $0 and $0 in 2018, 2017 and 2016, respectively.