Form of Notice of Stock Option Grant and Stock Option Agreement for U.S. Employees under Amended and Restated 2016 Equity Incentive Plan, as amended

This option vests and becomes exercisable in installments, as shown in the Notice of Stock Option Grant, provided that you have provided continuous Service to the Company through the date of such installment.

This option will in no event vest or become exercisable for additional shares after your Service has terminated for any reason.

This option expires in any event at the close of business at Company headquarters on the day before the 10th anniversary of the Date of Grant, as shown in the Notice of Stock Option Grant. (It will expire earlier if your Service terminates, as described below.)

If your Service terminates because of your total and permanent disability, then this option will expire at the close of business at Company headquarters on the date 12 months after your termination date.

For all purposes under this Agreement, “total and permanent disability” means that you are unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted, or can be expected to last, for a continuous period of not less than one year.

For purposes of this option, your Service does not terminate when you go on a military leave, a sick leave or another bona fide leave of absence, if the leave was approved by the Company in writing and if continued crediting of Service is required by the terms of the leave or by applicable law. But your Service terminates when the approved leave ends, unless you immediately return to active work.

If you go on a leave of absence, then the vesting schedule specified in the Notice of Stock Option Grant may be adjusted in accordance with the Company’s leave of absence policy or the terms of your leave. If you commence working on a part-time basis, then the vesting schedule specified in the Notice of Stock Option Grant may be adjusted in accordance with the Company’s part-time work policy or the terms of an agreement between you and the Company pertaining to your part-time schedule.

Except as set forth below in “Default Same Day Sale at Expiration”, when you submit your notice of exercise, you must include payment of the option exercise price for the shares that you are purchasing. To the extent permitted by applicable law, payment may be made in one (or a combination of two or more) of the following forms (each, a “Permissible Form of Payment”):

•Cash payment (including check, electronic wire transfer or other method permitted by the Company).

•Withholding from any compensation (on an after-tax basis) otherwise payable to you by the Company or an Affiliate; provided the Company has consented to such withholding.

•Withholding shares subject to the option that would otherwise be issued to you upon exercising the option (i.e., net exercise). The value of such shares, determined as of the effective date of the option exercise, will be applied to the option exercise price.

•Certificates for shares of Company stock that you own, along with any forms needed to effect a transfer of those shares to the Company. The value of the shares, determined as of the effective date of the option exercise, will be applied to the option exercise price. Instead of surrendering shares of Company stock, you may attest to the ownership of those shares on a form provided by the Company and have the same number of shares subtracted from the option shares issued to you.

•Irrevocable directions to a securities broker approved by the Company to sell all or part of your option shares and to deliver to the Company from the sale proceeds an amount sufficient to pay the option exercise price and any withholding taxes, such sale, a “same day sale”. (The balance of the sale proceeds, if any, will be delivered to you.) The directions must be given by signing a special “Notice of Exercise” form provided by the Company and delivered to the securities broker (with a copy to the Company) on a Permissible Trading Day (as defined below).

“Permissible Trading Day” means a day that satisfies each of the following requirements:

•    The Nasdaq Global Market is open for trading on that day,

•    You are permitted to sell shares of the Company’s Common Stock on that day without incurring liability under Section 16(b) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”),

•    Under the Company’s Policy Memorandum Concerning Securities Trading, you would be permitted to sell shares of the Company’s Common Stock on that day without reliance on the “Same Day Sale-to-Cover Transactions” exclusion therein, and

•    You are not prohibited from selling shares of the Company’s Common Stock on that day by a written agreement between you and the Company or a third party.

You will not be allowed to exercise this option unless you make arrangements acceptable to the Company to pay any withholding taxes that may be due as a result of the option exercise. With the Company’s consent, these arrangements may include withholding shares of Company stock that otherwise would be issued to you when you exercise this option. The value of these shares, determined as of the effective date of the option exercise, will be applied to the withholding taxes. If, however, the exercise is an Expiration Exercise, then, unless you have previously made arrangements on a Permissible Trading Day for the payment of the withholding taxes by one (or a combination of two or more) of the Permissible Forms of Payment, the withholding taxes that may be due as a result of such exercise shall be paid from the sale proceeds of a “same day sale” as described above (other than the requirement to deliver the Notice of Exercise on a Permissible Trading Day). Withholding taxes due upon any exercise of this option shall be equal to the Company’s required tax withholding obligations using (i) the maximum statutory withholding rates for state, local and foreign tax purposes, including payroll taxes, that are applicable to supplemental taxable income and (ii) the minimum statutory withholding rate for federal tax purposes, including payroll taxes, that are applicable to supplemental taxable income unless you instruct the Company to use a higher withholding rate in a written notice delivered to the Company on a Permissible Trading Day.

This Agreement, the Notice of Stock Option Grant and the Plan constitute the entire understanding between you and the Company regarding this option. Any prior agreements, commitments or negotiations concerning this option are superseded. This Agreement may be amended only by another written agreement between the parties.