(1)

Pursuant to Rule 416(a) under the Securities Act of 1933 (the “Securities Act”), this registration statement also covers any additional shares of the registrant's common stock that become issuable under the registrant's 2018 Equity and Incentive Compensation Plan (the “Plan”) by reason of any stock dividend, stock split, recapitalization or other similar transaction that increases the number of outstanding shares of common stock.

(2)	Estimated in accordance with Rule 457(c) solely for the purpose of calculating the registration fee and based upon the average of the high and low prices of the common stock of the registrant as quoted on The Nasdaq Global Select Stock Market on September 24, 2018.

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1.	the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2017;

2.	the Company’s Quarterly Reports on Form 10-Q for the quarterly periods ended March 31, 2018 and June 30, 2018;

3.	the Company’s Current Reports on Form 8-K filed on April 23, 2018, May 16, 2018, June 7, 2018 and July 13, 2018; and

4.	the description of the common stock, par value $0.01 per share, of the Company (the “Common Stock”) contained in the Company’s Form 8‑A dated June 6, 1995,

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A.	The undersigned registrant hereby undertakes:

(1)	To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement:

(i)	to include any prospectus required by Section 10(a)(3) of the Securities Act of 1933;

(ii)

to reflect in the prospectus any facts or events arising after the effective date of the Registration Statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the Registration Statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20 percent change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the effective Registration Statement;

(iii)	to include any material information with respect to the plan of distribution not previously disclosed in the Registration Statement or any material change to such information in the Registration Statement;

B.

The undersigned registrant undertakes that, for purposes of determining any liability under the Securities Act of 1933, each filing of the registrant’s annual report pursuant to Sections 13(a) or 15(d) of the Exchange Act (and, where applicable, each filing of an employee benefit plan’s annual report pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference in this Registration Statement shall be deemed to be a new registration statement relating to the securities offered herein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

C.

Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions described under Item 6 above, or otherwise, the registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act of 1933 and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act of 1933 and will be governed by the final adjudication of such issue.

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