Form of Common Share Certificate


 Exhibit 4.3 
 

 
 3494769 
 INCORPORATED UNDER THE BUSINESS CORPORATIONS ACT OF THE PROVINCE OF ALBERTA 
 Number 
 ***SPECIMEN*** 
 Shares 
 ***SPECIMEN*** 
 TESCO 
 TESCO
CORPORATION 
 THIS CERTIFIES THAT 
 ***SPECIMEN*** 
 CUSIP 88157K 10 1 
 ISIN CA 88157K1012 
 SEE REVERSE FOR CERTAIN DEFINITIONS 
 is the registered holder of 
 fully paid and non-assessable Common Shares without nominal or par value of the Capital Stock of 
 TESCO CORPORATION 
 transferable only on the books of the Corporation by the holder hereof in person or by attorney upon surrender of this Certificate properly endorsed. 
 This Certificate is not valid until countersigned and registered by the Transfer Agent and Registrar of the Corporation. 
 In Witness Whereof the said Corporation has caused this Certificate to be signed by the facsimile signatures of its duly authorized 
 officers. 
 Dated: 
 ***SPECIMEN*** 
 COUNTERSIGNED AND REGISTERED 
 COMPUTERSHARE TRUST COMPANY OF CANADA

 (CALGARY) (TORONTO) 
 TRANSFER AGENT AND REGISTRAR 
 By ***SPECIMEN*** 
 Authorized Officer 
 OR 
 COUNTERSIGNED AND REGISTERED 
 COMPUTERSHARE TRUST COMPANY, N.A. 
 (GOLDEN) 
 TRANSFER AGENT AND REGISTRAR 
 By ***SPECIMEN*** 
 Authorized Officer 
 The shares represented by this certificate are transferable at the offices of
Computershare Trust Company of Canada in Calgary AB and Toronto, ON 
 and at the offices of Computershare Trust Company, N.A.
in Golden, CO. 
 President and Chief Executive Officer 
 General Counsel and Corporate Secretary 
 SECURITY INSTRUCTIONS ON REVERSE 
 VOIR LES INSTRUCTIONS DE SECURITÉ
AU VERSO 
 Printed by DATA BUSINESS FORMS 
 00L3ZA 






 

 
 Until the earlier of Separation Time or the Expiration Time (as defined in the Rights Agreement
referred to below), this certificate also evidences and entities the holder hereof to certain Rights as set forth in a Shareholder Rights Plan Agreement, dated as of July 9, 1996, as amended and restated on March 14,
2002, May 13, 2005 and May 20, 2008, as such from time to time may be amended, restated, varied or replaced, (the “Rights Agreement”) between Tesco Corporation (the “Corporation”) and Computershare Trust Company of
Canada, as Rights Agent, the terms of which are hereby incorporated herein by reference and a copy of which is on file at the principal executive office of the Corporation and may be inspected by shareholders of the Corporation during normal
business hours. In certain circumstances, as set forth in the Rights Agreement, such Rights may be amended or redeemed, may expire, may become void (if, in certain cases, they are “Beneficially Owned” by an “Acquiring Person”, as
such terms are defined in the Rights Agreement, or a transferee thereof) or may be evidenced by separate certificates and may no longer be evidenced by this certificate. The Corporation will mail or arrange for the mailing of a copy of the Rights
Agreement to the holder of this certificate, without charge, as soon as practicable after a receipt of a written request therefor. 
 The following abbreviations shall be construed as though the words set forth below opposite each abbreviation were written out in full where such abbreviation appears. 
 TEN COM - as tenants in common 
 TEN ENT - as tenants by the entireties 
 JT TEN - as joint tenants with rights of survivorship and
not as tenants in common 
 (Name) CUST (Name) UNIF - (Name) as Custodian for (Name) under the 
 GIFT MIN ACT (State) - (State) Uniform Gifts to Minors Act 
 Additional abbreviations may also be used though not in the above list. 
 Please insert Social Insurance, Tax Identification, or other identifying number of transferee. 
 For value
received the undersigned hereby sells, assigns and transfers unto 
 Insert name and address of transferee. 
 shares represented by this certificate and does hereby irrevocably constitute and appoint the attorney of the undersigned to transfer the
said shares on the books of the Corporation with full power of substitution in the premises. 
 DATED: Signature of
Shareholder Signature of Guarantor 
 Signature Guarantee: 
 The signature on this assignment must correspond with the name as written upon the face of the certificate(s), in every particular,
without alteration or enlargement, or any change whatsoever and must be guaranteed by a major Canadian Schedule I chartered bank or a member of an acceptable Medallion Signature Guarantee Program (STAMP, SEMP, MSP). The Guarantor must affix a stamp
bearing the actual words “Signature Guaranteed”. In the USA, signature guarantees must be done by members of a “Medallion Signature Guarantee Program” only. Signature guarantees are not accepted from Treasury Branches, Credit
Unions or Caisses Populaires unless they are members of the Stamp Medallion Program. 
 Computershare’s Privacy Notice:

 In the course of providing services to you and our corporate clients, Computershare receives non-public personal
information about you - your name, address, social insurance number, securities holdings, transactions, etc. We use this to administer your account, to better serve your and our clients’ needs and for other lawful purposes. We have prepared a
Privacy Code to tell you more about our information practices and how your privacy is protected. It is available at our website, computershare.com, or by writing us at 100 University Avenue, Toronto, Ontario, M5J 2Y1. *You are required to provide
your SIN if you will receive income on these securities. We will use this number for income reporting. Computershare may also ask for your SIN as an identification-security measure if you call or write to request service on your account; however you
may decline this usage. 
 SECURITY INSTRUCTIONS – INSTRUCTIONS DE SÉCURITÉ THIS IS WATERMARKED PAPER, DO
NOT ACCEPT WITHOUT NOTING WATERMARK. HOLD TO LIGHT TO VERIFY WATERMARK. PAPIER FILIGRANÉ, NE PAS ACCEPTER SANS VÉRIFIER LA PRÉSENCE DU FILIGRANE, POUR CE FAIRE, PLACER Á LA LUMIÉRE. 
 CAI.VI.T/000001 00L40C