TENNANT COMPANY 2007 STOCK INCENTIVE PLAN Certificate Evidencing Deferred Stock Units

Exhibit 10.17

TENNANT COMPANY

2007 STOCK INCENTIVE PLAN

Certificate Evidencing Deferred Stock Units

This Certificate evidences deferred stock units (“Units”) granted to the individual identified above (the “Holder”) pursuant to the Tennant Company 2007 Stock Incentive Plan (the “Plan”) and is an Agreement between Tennant Company (the “Company”) and the Holder, effective as of the date of grant specified above.

Recitals

WHEREAS, the Company maintains the Plan; and

WHEREAS, pursuant to the Plan, the Compensation Committee (“Committee”) of the Board of Directors has the authority to issue Units in payment of awards granted under the Plan; and

WHEREAS, the Committee has determined that the Holder has earned an award under the Plan and that such award should be paid in Units in lieu of cash as authorized by Section 4.4 of the Plan;

NOW, THEREFORE, the Company hereby grants Units to the Holder under the terms and conditions as follows:

Terms and Conditions

1

(a)      Generally. Payment of Units subject to this Agreement shall be made by the Company’s delivering shares of Common Stock having a fair market value at the date of payment, equal in the aggregate to the fair market value at such date of such Units; provided, however, that the amount payable in shares of Common Stock shall be reduced by an amount necessary to cover the Company’s tax withholding obligation or as otherwise provided in Section 5.

(b)      Timing. Units subject to this Agreement shall be paid on the earlier of the payment date specified at the beginning of this Agreement, the Holder’s death, or the Holder’s termination of employment with the Company (whether by reason of Disability, Retirement, voluntary termination, or involuntary termination with or without cause). Payments made due to death or termination of employment shall be paid on the fifth business day following such termination of employment (or by such later date as the Committee shall determine is reasonable under the circumstances, but no later than the end of the year in which the termination of employment occurs).

Notwithstanding anything to the contrary herein, a termination of employment must be a “separation from service” as defined in Treas. Reg. § 1.409A-1(h) for payment to be made. In addition, if the Company determines that, as of the Holder’s separation from service (for reasons other than death), the Holder is a “specified employee” (within the meaning of Code § 409A(a)(2)(B)(i) and determined in accordance with Treas. Reg. § 1.409A-1(i) and the Company’s Specified Employee Identification Policy, if any, in effect on the Participant’s termination date (which policy is incorporated herein by reference)), then the Units will be paid on the first business day of the seventh month following the Separation from Service.

(c)      Effect. Whenever the Company shall become obligated to make payment in respect of a Unit subject to this Agreement, all rights of the Holder with respect to such Unit, other than the right to such payment, shall terminate and be of no further force or effect and such Unit shall be cancelled.

(d)      Payments on Death. Any payment due under this Agreement following the death of the Holder shall be paid to the estate of the Holder.

2

(a)      Generally. The Units initially subject to this Agreement have a fair market value, as of the date of grant, equal to 120% of the cash bonus in lieu of which such Units were granted.

(b)      Adjustments. If, prior to the payment date specified at the beginning of this Agreement (or, if earlier, the occurrence of a Change in Control), the employment of the Holder with the Company is terminated for any reason other than death, Disability or Retirement, then the number of Units subject to this Agreement shall be reduced so that the number of Units subject to this Agreement is equal to that number of Units that would have resulted had there originally been granted to the Holder Units having a fair market value, as of the date of grant, equal to 100% of such cash bonus (the “Base Number”). If, prior to the payment date specified at the beginning of this Agreement (or, if earlier, the occurrence of a Change in Control), the employment of the Holder with the Company is terminated by reason of death, Disability or Retirement, then the number of Units subject to this Agreement shall be reduced so that the number of Units subject to this Agreement is equal to the sum of (i) the Base Number, plus (ii) a pro rata portion of the difference between the number of Units subject to this Agreement immediately prior to such reduction and the Base Number (such proration being based on the number of days occurring prior to such termination of employment in the three-year period beginning on January 1 of the year in which the date of grant occurred and ending on the payment date specified at the beginning of this Agreement).

(c)      Definitions. As used in this Agreement, Disability means a medical condition that the Committee has determined renders the Holder unable to perform the normal duties of the Holder’s position with the Company. The Committee may, in its sole discretion, obtain a medical opinion from a physician selected by the Committee before any determination of Disability is made. As used in this Agreement, Retirement means termination of employment at or after age 55, provided that the Holder has given the Company at least six months’ prior written notice of such termination, or as otherwise determined by the Committee. As used in this Agreement, Change in Control shall have the meaning ascribed thereto in the Company’s 2007 Stock Incentive Plan.

3

4

IN WITNESS WHEREOF, the Holder and the Company have executed this Agreement effective as of the date of grant specified above.

5