Five9 Inc. Watch

from 8-K 112 pages Five9, Inc. and U.S. Bank Trust Company, National Association, as Trustee Indenture Dated as of March 1, 2024 1.00% Convertible Senior Notes Due 2029

from S-8 15 pages Indenture or similar

from S-8 22 pages Indenture or similar

from 8-K 112 pages Indenture or similar

from 10-K 4 pages Description of Registrant’s Securities

from 8-K 112 pages Five9, Inc. and U.S. Bank National Association, as Trustee Indenture Dated as of May 8, 2018 0.125% Convertible Senior Notes Due 2023

from 10-Q 9 pages Third Amendment to Eighth Amended and Restated Stockholders’ Agreement

from 10-Q 8 pages Joinder to the Eighth Amended and Restated Stockholders’ Agreement of Five9, Inc. April 1, 2014

from S-1/A 59 pages Eighth Amended and Restated Stockholders’ Agreement

from S-1/A 2 pages Five9tm Number Fn Shares Incorporated Under the Laws of the State of Delaware Cusip 338307 10 1 See Reverse for Certain Definitions This Certifies That Is the Record Holder of Fully Paid and Nonassessable Shares of Common Stock, $0.001 Par Value, of Five9, Inc. Transferable on the Books of the Corporation in Person or by Duly Authorized Attorney Upon Surrender of This Certificate Properly Endorsed. This Certificate Is Not Valid Until Countersigned by the Transfer Agent and Registered by the Registrar. Witness the Facsimile Seal of the Corporation and the Facsimile Signatures of Its Duly Authorized Officers. Dated: President Secretary Five9, Inc. Corporate Seal March 13, 2001 Delaware Countersigned and Registered: American Stock Transfer & Trust Company, LLC (New York, Ny) Transfer Agent and Registrar By: Authorized Signature Heritage Banknote

from S-1 18 pages Warrant to Purchase Stock

from S-1 9 pages Warrant to Purchase Stock

from S-1 11 pages Warrant to Purchase Stock

from S-1 11 pages Five9, Inc. Warrant to Purchase Shares

from S-1 41 pages Eighth Amended and Restated Stockholders’ Agreement

from DRS/A 9 pages Warrant to Purchase Stock

from DRS/A 11 pages Warrant to Purchase Stock

from DRS/A 11 pages Five9, Inc. Warrant to Purchase Shares

from DRS/A 41 pages Eighth Amended and Restated Stockholders’ Agreement