is subject to the same vesting conditions and other terms applicable to the Performance Awards granted to our other executive officers under the 2018 Plan, as described above. Accordingly, such performance-based stock option vested in full as of February 2021.
The vesting of all of Mr. Zemetra’s time-based equity awards is subject to his continued employment through the relevant vesting date and acceleration under circumstances, as discussed under the heading “Payments Upon Termination of Employment or Change in Control” below.
2021 Equity Awards
On February 11, 2021, the Compensation Committee granted to Chad Steelberg under the 2017 Plan an award of RSUs representing the right to receive upon vesting 179,845 shares of our common stock. Chad Steelberg’s award had a grant date fair value of $8,515,660.75 based on the closing stock price of our common stock on the grant date. This award vested in full on February 11, 2022.
On February 11, 2021, the Compensation Committee granted to Ryan Steelberg under the 2017 Plan an award of RSUs representing the right to receive upon vesting 127,422 shares of our common stock. Ryan Steelberg’s award had a grant date fair value of $6,033,431.70 based on the closing stock price of our common stock on the grant date. This award vested in full on February 11, 2022.
On February 11, 2021, the Compensation Committee granted to Michael Zemetra under the 2017 Plan an award of RSUs representing the right to receive upon vesting 9,689 shares of our common stock. Mr. Zemetra’s RSU award had a grant date fair value of $458,774.15 based on the closing stock price of our common stock on the grant date. This award vested in full on February 11, 2022.
Generally Available Benefit Programs
Section 401(k) Plan
We make available a tax-qualified retirement plan that provides eligible employees, including our executives, with an opportunity to save for retirement on a tax advantaged basis. Participants are able to defer up to 80% of their eligible compensation, subject to applicable annual limits under the Internal Revenue Code of 1986, as amended (the “Internal Revenue Code”). Pre-tax contributions are allocated to each participant’s individual account and are then invested in selected investment alternatives according to the participant’s directions. We do not currently make any matching contributions under the 401(k) plan.
Employee Stock Purchase Plan
We maintain an employee stock purchase plan (the “ESPP”), which is intended to qualify as an “employee stock purchase plan” under Section 423 of the Internal Revenue Code, to promote stock ownership by employees. Under the ESPP, eligible employees are able to acquire shares of our common stock by accumulating funds through payroll deductions. Eligible employees are able to select a rate of payroll deduction between 1% and 15% of their eligible compensation. The ESPP is implemented through a series of offering periods of up to 27 months, each having multiple purchase intervals, which are generally six months, unless otherwise determined by our Compensation Committee as the plan administrator.
The purchase price for shares of our common stock under the ESPP is established by our Compensation Committee prior to the start of any offering period, but will not be less than 85% of the lower of the fair market value of our common stock on (i) the first day of each offering period and (ii) the purchase date for each purchase interval. Purchases under the ESPP are subject to certain limitations, including a maximum number of shares that each participant may purchase on each purchase date of 1,000 shares, a maximum number of shares that may be purchased in total by all participants on each purchase date of 200,000 shares, and the $25,000 annual limit under the Internal Revenue Code. In addition, under no circumstances will purchase rights be granted under the ESPP to any eligible employee if such individual would, immediately after the grant, own or hold outstanding options or other rights to purchase stock possessing 5% or more of the total combined voting power or value of all classes of stock of our company or any parent or subsidiary.
Health Benefit Programs
Our executive officers are eligible to participate in our health benefit programs, including medical, dental, vision, long-term disability, life and accidental death and dismemberment insurance, flexible spending accounts and certain other benefits. We pay 100% of the premiums for the medical, dental, vision, long-term disability and