SendGrid, Inc. Watch

from S-1/A 1 page Specimen Specimen N U M B E R SEND See Reverse for Certain Definitions Incorporated Under the Laws of the State of Delaware C O M M O N S T O C K This Certifies That: Specimen Is the Owner of Fully Paid and Non-Assessable Shares of Common Stock, $0.001 Par Value Per Share, of SendGrid, Inc. Transferable on the Books of the Corporation by the Holder Thereof in Person or by Duly Authorized Attorney Upon Surrender of This Certificate Duly Endorsed or Assigned. This Certificate and the Shares Represented Hereby Are Subject to the Laws of the State of Delaware, and to the Certificate of Incorporation and Bylaws of the Corporation, as Now or Hereafter Amended. This Certificate Is Not Valid Until Countersigned by the Transfer Agent. Witness the Facsimile Seal of the Corporation and the Facsimile Signatures of Its Duly Authorized Officers. Countersigned: Broadridge Corporate Issuer Solutions, Inc. 1717 Arch St., Ste. 1300, Philadelphia, Pa 19103 Transfer Agent Dated: By: Authorized Signature Secretary President Cusip816883102 Shares

from S-1 9 pages Second Amended and Restated Warrant to Purchase Stock

from S-1 20 pages SendGrid, Inc. Amended and Restated Registration Rights Agreement SendGrid, Inc. Amended and Restated Registration Rights Agreement

from DRS 9 pages Second Amended and Restated Warrant to Purchase Stock

from DRS 20 pages SendGrid, Inc. Amended and Restated Registration Rights Agreement SendGrid, Inc. Amended and Restated Registration Rights Agreement