Justworks, Inc. Watch

from S-1/A 2 pages C O U N Ter Sig N Ed an D R Eg Ister Ed : A M Er Ic a N Sto C K Tr a N Sfer & Tr U St C O M Pa N Y, LLC Br O O Klyn , N Y Tr an Sfer AG en T an D R Eg Istr Ar By: Au Th O R Ized Sig N Atu R E Dated: Number Transferable on the Books of the Corporation in Person or by Duly Authorized Attorney Upon Surrender of This Certificate Properly Endorsed. This Certificate and the Shares Represented Hereby Are Issued and Shall Be Held Subject to All of the Provisions of the Certificate of Incorporation and Bylaws of the Corporation, as Amended and Restated to Date (Copies of Which Are on File With the Corporation and With the Transfer Agent), to All of Which Each Holder, by Acceptance Hereof, Assents. 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. Incorporated Under the Laws of the State of Delaware This Certifies That: Is the Registered Holder of See Reverse for Certain Definitions Cusip 482204 10 4 Class a Common Stock Shares Chief Executive Officersenior Vice President and Chief Financial Officer Fully Paid and Non-Assessable Shares of Class a Common Stock, $0.0005 Par Value Per Share, of Justworks, Inc. Specimen - Not Negotiable Specimen Not Negotiable

from S-1 14 pages Section 1. Exercise

from S-1 14 pages Plain English Warrant Agreement

from S-1 38 pages Fourth Amended and Restated Investors’ Rights Agreement