Rush Enterprises Inc. Watch

from S-8 2 pages Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934 Description of Common Stock

from 10-K 2 pages Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934 Description of Common Stock

from S-8 7 pages Rush Enterprises, Inc. 2007 Long-Term Incentive Plan Stock Option Agreement

from S-8 2 pages Rush Enterprises, Inc. 2006 Non-Employee Director Stock Option Plan Stock Option Agreement

from S-8 5 pages Non-Qualified Stock Option Agreement

from S-8 8 pages Rush Enterprises Inc. 2004 Employee Stock Purchase Plan

from S-8 8 pages Non-Qualified Stock Option Agreement

from S-8 3 pages Rush Enterprises, Inc. 1997 Non-Employee Director Plan Stock Option Agreement

from S-8 6 pages Rush Enterprises, Inc. Amended and Restated 1997 Non-Employee Director Stock Option Plan

from S-8 8 pages Rush Enterprises, Inc. Long-Term Incentive Plan

from 8-A12G 1 page Rea Class a Common Stock Class a Common Stock Rush Enterprises, Inc. Incorporated Under the Laws of the State of Texas Cusip 781846 20 9 See Reverse for Certain Definitions and Restrictions This Certifies That Is the Owner of Fully Paid and Non-Assessable Shares of Class a Common Stock, $.01 Par Value Per Share, of Rush Enterprises, Inc. Transferable on the Books of the Corporation by the Holder Hereof in Person or by Duly Authorized Attorney Upon Surrender of This Certificate Properly Endorsed. This Certificate Is Not Valid Unless Countersigned and Registered by the Transfer Agent and Registrar. Witness the Facsimile Seal of the Corporation and the Facsimile Signatures of Its Duly Authorized Officers. Dated: Secretary Chairman Countersigned and Registered: American Stock Transfer & Trust Company Transfer Agent and Registrar by Authorized Signature

from S-8 1 page Form of Stock Option Agreement

from S-8 ~10 pages 1997 Non-Employee Director Stock Option Plan

from S-1/A ~10 pages Form of Representatives' Warrant

from S-1/A 1 page Specimen of Certificate