ExOne Co Watch

from S-3ASR 39 pages The ExOne Company as Issuer Indenture Dated as of , 202 [ ] Trustee

from 10-K 4 pages Description of the ExOne Company Common Stock

from S-3 43 pages The ExOne Company as Issuer and the Subsidiary Guarantors Named Herein Indenture Dated as of , 201 [ ] Trustee

from S-3 43 pages The ExOne Company as Issuer and the Subsidiary Guarantors Named Herein Indenture Dated as of , 201 [ ] Trustee

from S-1/A 2 pages Incorporated Under the Laws of the State of Delaware See Reverse for Certain Definitions Cusip 300504 10 7 the Corporation Is Authorized to Issue Two Hundred Million Shares of Common Stock, $.01 Per Share This Certifies That Is the Owner of Fully Paid and Non-Assessable Shares of the Common Stock, Par Value of $.01 Per Share, of the ExOne Company Transferable Only 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 Signatures of the Corporation’s Duly Authorized Officers. Dated: Chief Financial Officer Treasurer Chairman and Chief Executive Officer by Countersigned American Stock and Transfer Registered: Trust & Company, LLC. (Brooklyn, Ny) Transfer Agent and Registrar Authorized Officer