UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

(Amendment No.     )

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

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☐	Preliminary Proxy Statement
☐	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☐	Definitive Proxy Statement
☒	Definitive Additional Materials
☐	Soliciting Material Pursuant to §240.14a-12

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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*** Exercise Your Right to Vote ***

Important Notice Regarding the Availability of Proxy Materials for the

Stockholder Meeting to Be Held on May 21, 2019

	WABASH NATIONAL CORPORATION WABASH NATIONAL CORPORATION ATTN: LEGAL/CORPORATE SECRETARY 1000 SAGAMORE PARKWAY S. LAFAYETTE, IN 47905	Meeting Information Meeting Type:         Annual Meeting For holders as of:    March 22, 2019 Date:  May 21, 2019      Time: 10:00 AM EDT Location:    Wabash National Corporation                      Ehrlich Innovation Center                      3233 Kossuth Street                      Lafayette, IN 47904
		You are receiving this communication because you hold shares in the above named company. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting.
		See the reverse side of this notice to obtain proxy materials and voting instructions.

— Before You Vote —

How to Access the Proxy Materials

Proxy Materials Available to VIEW or RECEIVE:

1. Combined Proxy Statement and 10-K

How to View Online:

Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com.

How to Request and Receive a PAPER or E-MAIL Copy:

If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:

1) BY INTERNET:        www.proxyvote.com

2) BY TELEPHONE:   1-800-579-1639

3) BY E-MAIL*:           sendmaterial@proxyvote.com

* If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line.

Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 07, 2019 to facilitate timely delivery.

— How To Vote —

Please Choose One of the Following Voting Methods

	Vote In Person: Many stockholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares.
	Vote By Internet: To vote now by Internet,go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow available and follow the instructions.
	Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.

	Voting items
	The Board of Directors recommends you vote FOR the following:			The Board of Directors recommends you vote FOR proposals 2 and 3.
	1.	Election of Directors	2.	To approve, on an advisory basis, the compensation of our named executive officers.
		Nominees:
		1a.    Dr. Martin C. Jischke 1b.    John G. Boss 1c.    John E. Kunz 1d.    Larry J. Magee 1e.    Ann D. Murtlow 1f.    Scott K. Sorensen 1g.    Brent L. Yeagy	3.	To ratify the appointment of Ernst & Young LLP as Wabash National Corporation’s independent registered public accounting firm for the year ending December 31, 2019. NOTE: Such other business as may properly come before the meeting or any adjournment thereof.